CN102494430A - Cold-electricity cogeneration system comprising wind power and gas combined cycle unit and method for scheduling cold-electricity cogeneration system - Google Patents

Abstract

The invention discloses a combined cooling and power generation system and method including wind power and gas combined cycle units. The user adopts cooling fan coils and air conditioners for cooling, and the cold water comes from a centralized heat absorption refrigerator. , the electric power is jointly provided by the gas combined cycle unit and the wind power generating unit. After detecting the energy supply for a period of time and the energy consumption of the user through the integrated dispatching control device, a forecast is made for a period of time in the future; and then scheduling is carried out on this basis. Under the condition of ensuring that the power supply and cold energy supply are satisfied, reduce the cooling output and cold water flow, and use the power consumption to compensate for the cooling. The power consumption cooling can not only compensate for the shortage of cold water cooling, but also increase the load during low power periods; In this way, based on the combination of wind power generation and gas combined cycle units, the predicted output is closer to the wind power output actually required by the system.

Description

Combined cooling and power generation system and method including wind power and gas combined cycle units

technical field

The invention relates to an urban comprehensive energy supply system, in particular to a combined cooling and power generation system and method including wind power and gas combined cycle units.

Background technique

Renewable energy has the characteristics of green and clean, and has developed rapidly in recent years. But taking wind power as an example, while wind power provides clean and low-carbon energy, the large-scale grid connection of wind farms has also brought adverse effects on the safe and economic operation of the grid.

Traditional scheduling problems are based on accurate load forecasting. However, wind energy is affected by various natural factors such as climate, altitude, terrain, and temperature, and has intermittent and random fluctuations. The difficulty of wind speed and wind power forecasting is much greater than that of load forecasting.

Although scholars at home and abroad have done a lot of related research work on wind energy forecasting, the forecasting level of wind farm output still cannot meet the actual requirements of the project to a large extent, which has brought considerable problems to the dispatching work of the power system. Difficulties.

Contents of the invention

The technical problem to be solved by the present invention is a combined cooling and power generation system and method including wind power and gas-fired combined cycle units. Through the dispatching system and dispatching method of the present invention, the wind power generation actually required by the system and the target wind power generation can be greatly reduced. The error between them is beneficial to system operation and planning, and reduces the difficulty of scheduling.

In order to achieve the above object, the present invention adopts the following technical solutions:

A combined heat and power system comprising wind power and gas combined cycle units, comprising: a gas combined cycle unit for producing electricity and hot water; a wind power generating unit for producing electricity; a centralized heat absorption chiller connected to The hot water outlet of the gas combined cycle unit converts hot water into cold water; the air conditioner connected in parallel with the gas combined cycle unit and the wind power generator set, the air conditioner is generated by the electric energy generated by the gas combined cycle unit and the wind power generator set Drive to generate cold air; control the remote control switch of the air conditioner; the cooling fan coil connected with the centralized heat absorption refrigerator, and the cold water produced by the centralized heat absorption refrigerator flows into the refrigeration fan The cooling air is generated in the coil; the cooling water consumption meter of the cooling fan coil is used to detect the data of the cooling water consumption of the cooling fan coil; the remote control switch of the cooling fan coil flow valve of the cooling fan coil is controlled; the first remote centralized control The controller collects the heating output hot water flow and power generation output electricity of the gas combined cycle unit, and transmits the heating output hot water flow and power generation output electricity data to the comprehensive dispatching control device; the second remote centralized controller stores refrigeration The distance information between the fan coil unit and the gas combined cycle unit collects the cold water consumption data detected by the cooling fan coil unit cold water consumption meter, and then transmits the above cold water consumption data and the distance data between the cooling fan coil unit and the gas combined cycle unit to the comprehensive dispatching control device; the third remote centralized controller collects the power generation output of the wind power generator set, and transmits the power generation output data to the comprehensive dispatching control device; the comprehensive dispatching control device, according to the cooling fan coil and gas combined cycle unit Calculate the distance between and generate the final scheduling control signal of the power generation output and heat output of the gas combined cycle unit and the power consumption and cooling capacity of the air conditioner at different times of the user; the first remote centralized controller receives the comprehensive scheduling After the scheduling control signal sent by the control device, the execution device of the gas combined cycle unit is controlled by the scheduling control signal; after the second remote centralized controller receives the scheduling control signal sent by the comprehensive scheduling control device, it uses the scheduling control signal The control signals respectively drive the remote control switch of the air conditioner and the remote control switch of the cooling fan coil water valve to perform the switching action.

The remote control switch of the refrigerating fan coil flow valve is remotely coupled with the comprehensive dispatching control device through the second remote centralized controller; the remote control switch of the air conditioner is remotely connected with the Coupling of the integrated scheduling control device; the control execution device of the gas combined cycle unit is remotely coupled with the integrated scheduling control device through the first remote centralized controller; the control execution device of the gas combined cycle unit is based on the obtained scheduling control signal , to control the actions of coal-fired feed valves, boiler steam inlet valves, heating steam extraction valves and power generation steam flow valves connected to it;

The comprehensive scheduling control device includes: a first data receiving unit that receives the heating output hot water flow rate and power generation output quantity of the gas combined cycle unit sent by the first remote centralized controller; receives the cooling fan panel sent by the second remote centralized controller The second data receiving unit for the cooling and cold water consumption data of the pipe and the distance information of the user’s pipeline; the third data receiving unit for receiving the power generation output data of the wind power generating set sent by the third remote centralized controller; 3. A data decoder for decoding the data received by the data receiving unit; a data storage for storing the decoded data; a scheduling control signal calculation unit for calculating the data stored in the data storage and generating a scheduling control signal; A signal conversion encoder that encodes the scheduling control signal; and transmits the encoded scheduling control signal to the sending unit of the first remote centralized controller and the second remote centralized controller, respectively;

The gas combined cycle unit control execution device includes a dispatching control signal transceiving code storage unit, a drive circuit and a mechanical gear control device, and the dispatching control signal is decoded by the dispatching control signal transceiving code storage unit to generate a gas combined cycle unit dispatching control command, The control command outputs an electric drag signal through the drive circuit and triggers the mechanical gear control device, which then controls the coal-fired feed valve action, steam extraction valve action and power generation steam flow valve action of the gas combined cycle unit;

The comprehensive scheduling control device is connected to the cloud computing computing service system through the power optical fiber, and drives the cloud computing service system to calculate to obtain a scheduling control signal; the comprehensive scheduling control device receives the scheduling obtained through the computing of the cloud computing computing service system through the power optical fiber control signal, and then issue the scheduling control signal to the first remote centralized controller and the second remote centralized controller via a power cable or wireless transmission;

The second remote centralized controller includes sequentially connected refrigeration cold water flow pulse counters, pulse signal code converters, metering signal amplification transmitters, and interconnected control signal receiving decoders and control signal remote control transmitters; refrigeration cold water flow pulses The counter is connected to the cooling water consumption meter of the cooling fan coil to detect the cooling flow data of the cooling water consumption meter of the cooling fan coil. The control signal receiving decoder receives and decodes the scheduling control information sent by the integrated scheduling control device, and then sends the control signal to the remote control switch of the air conditioner and the refrigeration fan panel through the control signal remote transmitter. The remote control switch of the pipe flow valve executes the switch action;

A method for dispatching a combined cooling and power generation system including wind power and gas combined cycle units, comprising the following steps:

1) Measure the following data: measure once every ΔT period, where ΔT is the sampling period, the number of samples is T, and T is a natural number

1.1) Measure the supply side: collect the power generation output P _comb (t) and heat output H _comb (t) of the gas combined cycle unit of the gas combined cycle unit, the heat treatment H _boil (t) of the heating boiler, and the third remote centralized controller The power output of wind turbines

1.2) User side:

(a) The pipe distance S _i between the refrigeration fan coils of N users and the gas combined cycle unit;

(b) Cooling consumption H _i (t) of cooling fan coils of N users;

(c) Installed capacity of air conditioners for N users

2) Calculate:

2.1) Calculating the total power generation output of wind turbines M is the number of wind turbines;

2.2) According to the total power generation output of wind turbines calculated in 2.1) Use the statistical analysis method to calculate and predict the power generation output P _wind (t) of the wind power generator set in the future; according to the thermal output H _comb (t) of the gas combined cycle unit collected in 1.1), predict the gas output in the future period The heat output H _comb (t) of the gas combined cycle of the combined cycle unit; according to the power generation output P _comb (t) of the gas combined cycle of the gas combined cycle unit collected in 1.1), the gas combined cycle of the gas combined cycle unit in the future is predicted. Cycle power generation output P _comb (t); according to the heat output H _boil of the heating boiler of the gas-fired combined cycle unit for a period of time in the future, predict the heat output H _boil of the heating boiler for a period of time in the future;

H_i(t，l)为第l组制冷风机盘管在t时刻的制冷负荷，

为第l组制冷风机盘管的空调器容量，其中用户分组方法为：首先计算出制冷风机盘管与燃气联合循环机组之间的等效距离

v为冷水在管道中的流速，然后对

取整得到s_i，接着，将具有相同s_i的用户分为同一组，其中，s_i＝l，l为L分组中的第l组；2.3) According to the distance S _i between the cooling fan coil unit and the gas combined cycle unit, all users are divided into L groups, L is a natural number, and then the total cooling load H _load (l)=∑H of all users in each group is calculated respectively _i (t, l) and air conditioner capacity

H _i (t, l) is the refrigeration load of group l refrigeration fan coil at time t,

is the air conditioner capacity of the cooling fan coil unit in group l, where the user grouping method is: first calculate the equivalent distance between the cooling fan coil unit and the gas combined cycle unit

v is the flow velocity of cold water in the pipeline, and then

Rounding to get s _i , then, users with the same _si are divided into the same group, wherein, s _i =l, l is the lth group in the L grouping;

2.4 Iteratively calculate the power generation output p _comb (t) and heat output h comb (t) of the gas combined cycle unit of the adjusted gas combined cycle unit and the heat output h _comb (t) of the heating boiler of the gas combined cycle unit according to the parameters calculated and predicted above _boil , air conditioner power consumption p _EHP (t, l) and cooling capacity h _EHP (t, l) at different times of the user.

The adjusted power generation output p _comb (t) and heat output h _comb (t) of the gas combined cycle, the heat output h _boil of the heating boiler of the gas combined cycle unit, and the power consumption p _EHP (t, l) and the cooling capacity h _EHP (t, l) are calculated as follows: combined with the following formulas (1) to (9), it can be known that in the case of the smallest Δp, the power generation output p _comb ( t) and heat output h _comb (t), the heat output h _boil of the heating boiler of the gas-fired combined cycle unit, the power consumption of the air conditioner at different times p _EHP (t, l) and the cooling capacity h _EHP (t, l) :

(A) Establish the objective function

$\mathrm{<span\; class="notranslate">\; \&Delta;p</span>}<span\; class="notranslate">\; =</span>\sqrt{\underset{\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; wind</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; wind</span>}}^{\mathrm{<span\; class="notranslate">\; need</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; /</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; T</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

Among them, Δp is the standard error between the equivalent power generation output of the adjusted wind turbine and the target power generation output, in MW;

p _wind (t) is the equivalent power generation output of the wind turbine after adjustment, in MW;

为风力发电机组的目标发电出力，单位MW；

It is the target power generation output of the wind turbine, in MW;

The expression of p _wind (t) is as follows:

p _wind (t)＝P _wind (t)+(p _comb (t)-p _comb (t))-p _EHPs (t) (2)

Among them, p _wind (t) is the equivalent power generation output of the wind turbine after adjustment, in MW;

P _wind (t) is the power generation output of the wind power generating set predicted in step 2.2), the unit is MW;

p _comb (t) is the power generation output of the adjusted gas combined cycle unit, unit MW;

P _comb (t) is the power generation output of the gas combined cycle unit predicted in step 2.2), in MW;

p _EHPs (t) is the power consumption of all user air conditioners at t, unit MW;

(B) Establish constraint equations

Heat load balance equation:

Δh(t)＝|(H _comb (t)+H _boil (t))-(h _comb (t)+h _boil (t))| (3)

$\mathrm{\&Delta;h}\left(t\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{h}_{\mathrm{EHP}}(t+l,l)$ (T≤t+l≤2T) (4)

in,

Δh(t) represents the insufficient hot water heating power of the gas-fired combined cycle unit in the t-th period, unit MW;

H _comb (t)+H _boil (t) is the predicted heating heat output of gas combined cycle unit, unit MW;

h _comb (t)+h _boil (t) is the heating heat output of the adjusted gas combined cycle unit, unit MW;

h _EHP (t+l, l) is the sum of cooling power of user air conditioners in group l at time t+l, unit MW;

Gas combined cycle unit constraints:

${\mathrm{<span\; class="notranslate">\; h</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; f</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; \&eta;</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}^{\mathrm{<span\; class="notranslate">\; q</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 5</span>}<span\; class="notranslate">\; )</span>$

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; f</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&Center\; Dot;</span>{\mathrm{<span\; class="notranslate">\; \&eta;</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}^{\mathrm{<span\; class="notranslate">\; e</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 6</span>}<span\; class="notranslate">\; )</span>$

为燃气联合循环的联合循环热效率；

为燃气联合循环的联合循环发电效率；In the above formulas (5) to (6), h _comb (t) is the thermal output of the adjusted gas combined cycle, unit MW; f _comb (t) is the power consumption of the gas combined cycle; p _comb (t) is the adjusted Electric output of post-gas combined cycle, unit MW;

is the combined cycle thermal efficiency of the gas combined cycle;

is the combined cycle power generation efficiency of the gas-fired combined cycle;

User-side air conditioner constraints:

Cooling power ratio constraints: h _EHP (t, l) = COP _EHP p _EHP (t, l) (7)

Air conditioner output upper limit: 0≤p _EHP (t, l)≤min(P _EHP (l)H _load (l)/COP _EHP ) (8)

Among them, _hEHP (t, l) is the sum of the cooling power of the user air conditioners of the lth group at time t, and the unit is MW;

COP _EHP is the coefficient of performance of the air conditioner;

p _EHP (t, l) is the sum of power consumption of user air conditioners in group l at time t, unit MW;

Electricity consumption of air conditioners for all user groups:

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; EHPs</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; L</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; EHP</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 9</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; .</span>$

Compared with the prior art, the beneficial effect of the present invention is that: the present invention utilizes the pipeline distance from the user to the cold source, and adjusts the fuel consumption, power generation output and heating output of the gas combined cycle unit according to the demand of the end user's load energy consumption, The power consumption of the end user's air conditioner for cooling and the cooling capacity of the end user's cooling fan coil can greatly reduce the error between the wind power generation actually required by the system and the target wind power generation, which is beneficial to system operation and Planning, reducing scheduling difficulties.

Description of drawings

Fig. 1 is the block diagram of the structure of the combined cooling and power generation system including wind power and gas combined cycle unit of the present invention;

Fig. 2 is the structural block diagram of the second remote centralized controller of the present invention;

Fig. 3 is a structural block diagram of the control executive device of the gas-fired combined cycle unit of the present invention;

Fig. 4 is the block diagram of the structure of the comprehensive scheduling control device of the present invention;

Fig. 5 is a connection diagram between the integrated dispatching control device and the cloud computing service system of the present invention;

Fig. 6 is a graph of the equivalent electric load and the target load adjusted by the dispatching system and dispatching method of the present invention.

Detailed ways

The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

Please refer to Fig. 1, a kind of combined cooling and power generation system including wind power and gas combined cycle unit of the present invention includes:

Gas combined cycle unit A for generating electricity and hot water;

Wind turbine B for generating electricity;

Centralized heat absorption chiller, connected to the hot water outlet of gas combined cycle unit A, to convert hot water into cold water;

The air conditioner 108 connected in parallel with the gas combined cycle unit A and the wind power generator through the power cable 113, the air conditioner 108 is driven by the electric energy generated by the gas combined cycle unit A and the wind power generator to generate cooling air;

Control the air conditioner remote control switch 117 of the air conditioner 108;

The cooling fan coil 110 connected to the centralized heat absorption refrigerator through a pipeline 114, the cold water produced by the centralized heat absorption refrigerator flows into the refrigeration fan coil 110 to generate refrigeration and cold air;

Refrigeration fan coil cold water consumption meter 111, used to detect the data of cold water consumption of the refrigeration fan coil 110;

Control the remote control switch 116 of the cooling fan coil flow valve of the cooling fan coil unit 110;

The first remote centralized controller 1121 collects the heating output hot water flow and power generation output of the gas combined cycle unit A, and transmits the collected heating output hot water flow and power generation output of the gas combined cycle unit A to the comprehensive dispatching control device 115;

The second remote centralized controller 1122 stores the distance information between the cooling fan coil unit and the gas combined cycle unit A, and then transmits the distance information between the cooling fan coil unit and the gas combined cycle unit A to the comprehensive dispatching control device 115: Collect the cold water consumption data detected by the refrigeration fan coil cold water consumption meter 111, and then transmit the collected cold water consumption data detected by the refrigeration fan coil cold water consumption meter 111 to the comprehensive dispatching control device 115;

The comprehensive scheduling control device 115, according to the distance between the refrigeration fan coil unit 110 and the gas combined cycle unit A, calculates and generates the final scheduling control of the power generation output and heat output of the gas combined cycle unit A and the power consumption of the air conditioner at different times by the user The control signal of quantity and cooling capacity;

After the first remote centralized controller receives the scheduling control signal sent by the integrated scheduling control device 115, it uses the scheduling control signal to control the action of the executive device of the gas combined cycle unit A;

After receiving the scheduling control signal sent by the integrated scheduling control device 115, the second remote centralized controller drives the remote control switch 117 of the air conditioner and the remote control switch 116 of the refrigerating fan coil water valve to perform the on/off action with the scheduling control signal;

Driven by the electric energy generated by the gas combined cycle unit A and the wind power generation unit, the air conditioner 108 at the end user can provide cooling air for the end user using the air conditioner 108 . The cold water for cooling produced by the centralized heat absorption refrigerator is delivered to the cooling fan coil unit 110 of the end user through the pipeline 114 to provide cooling air. The gas-fired combined cycle unit A is equipped with a valve for input steam volume ①, a valve for heating output steam extraction volume ② and a valve for power generation steam volume ③. The air conditioner 108 at the end user is connected in parallel with the gas combined cycle unit A and the wind power generator through the power transmission line 113, and the electric energy generated by the gas combined cycle unit A and the wind power generator drives the air conditioner 108 to generate cooling air, thereby providing Air conditioner users provide cooling air. The air conditioner 108 also includes an air conditioner switch ⑤.

Please refer to FIG. 1 , the air conditioner remote control switch 117 is connected to the air conditioner 108 for controlling the switch of the air conditioner 108 . The cooling fan coil 110 is connected to the centralized heat absorption refrigerator through a pipe 114, and the cold water produced by the centralized heat absorption refrigerator flows into the cooling fan coil 110 to generate cooling air . The cold water consumption meter 111 is coupled with the cooling fan coil unit 110 and is used to detect cooling cooling consumption data of the cooling fan coil unit 110 . The cooling fan coil unit 110 is provided with an on-off valve ⑥. The second remote centralized controller 112 collects the cold water consumption data detected by the refrigeration fan coil cold water consumption meter 111 , and then transmits the cold water consumption data to the comprehensive scheduling control device 115 .

Please refer to Fig. 2, the second remote centralized controller 1122 includes refrigerating and cold water flow pulse counters, pulse signal code converters, metering signal amplification transmitters connected in sequence, and interconnected control signal receiving decoders and control signal remote control transmitters. Refrigerating cold water flow pulse counter is connected to the cooling fan coil cooling water consumption meter 111 for detecting the cooling flow data of the cooling fan coil cooling water consumption meter 111 and the connection between the cooling fan coil unit and the gas combined cycle unit A The distance information between the refrigeration and cold water flow pulse counters, the refrigeration flow data and distance information detected by the refrigeration cold water flow pulse counter are sent to the comprehensive scheduling control device 115 after being processed by the pulse signal code converter and the metering signal amplification transmitter; the control signal receiving decoder receives the comprehensive scheduling The scheduling control information sent by the control device 115 is decoded, and then the control signal is sent to the remote control switch 117 of the air conditioner and the remote control switch 116 of the cooling fan coil flow valve through the control signal remote control transmitter to perform the on/off action.

The first remote centralized controller 1121 collects the heating output hot water flow and power generation output of the gas combined cycle unit A, and transmits the collected heating output hot water flow and power generation output of the gas combined cycle unit A to the comprehensive dispatching control device 115.

Please refer to Fig. 3, the control execution device of the gas combined cycle unit A includes a scheduling control signal transceiving code memory 302, a drive circuit 303 and a mechanical gear control device 304, and the scheduling control signal is generated after being decoded by the scheduling control signal transmitting and receiving code memory 302 The gas combined cycle unit scheduling control command, the electric drive signal output by the drive circuit 303 triggers the mechanical gear control device 304, and the mechanical gear control device 304 then controls the input steam volume valve ① of the gas combined cycle unit A to operate, heat supply and output steam extraction The volume valve ② operates and the power generation steam volume valve ③ operates. In order to control the fuel input of the gas-fired combined cycle unit A, the steam extraction flow for use and the steam flow for power generation.

Please refer to Fig. 4, the comprehensive scheduling control device 115 includes:

The first data receiving unit 200 that receives the heating output hot water flow and power generation output of the gas combined cycle unit (A) sent by the first remote centralized controller;

The second data receiving unit 201 that receives the refrigeration and cold water consumption data and user pipeline distance information sent by the second remote centralized controller;

A third data receiving unit that receives the power generation output data of the wind power generating set sent by the third remote centralized controller;

a data decoder 202 for decoding the data received by the first, second and third data receiving units;

a data memory for storing the decoded data;

A scheduling control signal calculation unit 204 that calculates the data stored in the data memory and generates a scheduling control signal;

a signal transcoder 205 that encodes the dispatch control signal; and

The encoded scheduling control signals are transmitted to the sending units 206 of the first remote centralized controller and the second remote centralized controller respectively.

Please refer to Fig. 5, the integrated dispatching control device 115 is connected with the cloud computing service system 917 through the power optical fiber 120, and drives the cloud computing service system 917 to calculate to obtain the dispatching control signal; the comprehensive dispatching control device 115 receives the cloud computing service through the power optical fiber 120 The system 917 calculates and obtains the dispatch control signal, and then issues the dispatch control signal to the first remote centralized controller 1121 and the second remote centralized controller 1122 via a power cable or wireless transmission.

The scheduling method of the combined cooling and power generation system including wind power and gas combined cycle units of the present invention comprises the following steps:

1) Measurement - measure once every ΔT period, where ΔT is the sampling period, the sampling frequency is T, and T is a natural number

(1.1) Measure the supply side:

Measure the power generation output P _comb (t) and heat output H _comb (t) of the gas combined cycle unit of the gas combined cycle unit A, the heat treatment H _boil (t) of the heating boiler, and the third remote centralized controller collects the power generation of the wind power generation unit Contribute

(1.2) Measurement user side: (i=0～N, N is the number of users)

1.2.1) The pipe distance S _i between the refrigeration fan coils of N users and the gas combined cycle unit A;

1.2.2) Cooling consumption H _i (t) of cooling fan coils of N users;

1.2.3) Installed capacity of air conditioners for N users

2) Calculate:

2.1) Calculating the total power generation output of wind turbines M is the number of wind turbines;

利用已知SPSS(Statistical Product and Service Solutions)统计分析方法，预测出未来一段时间风力发电机组的发电出力P_wind(t)；根据1.1)采集的燃气联合循环机组A的燃气联合循环的热出力H_comb(t)，预测未来一段时间的燃气联合循环机组A的燃气联合循环的热出力H_comb(t)；根据1.1)采集的燃气联合循环机组A的燃气联合循环的发电出力P_comb(t)，预测未来一段时间的燃气联合循环机组A的燃气联合循环的发电出力P_comb(t)；根据未来一段时间燃气联合循环机组A的供暖锅炉的热出力H_boil，预测未来一段时间供暖锅炉的热出力H_boil；2.2) According to the total power generation output of wind turbines calculated in 2.1)

Use the known SPSS (Statistical Product and Service Solutions) statistical analysis method to predict the power generation output P _wind (t) of the wind power generation unit for a period of time in the future; the heat output H of the gas combined cycle of the gas combined cycle unit A collected according to 1.1) _comb (t), predicting the heat output H _comb (t) of the gas combined cycle of the gas combined cycle unit A in the future; the power generation output P _comb (t) of the gas combined cycle of the gas combined cycle unit A collected according to 1.1) , to predict the power generation output P _comb (t) of the gas combined cycle unit A in the future; according to the heat output H _boil of the heating boiler of the gas combined cycle unit A in the future, predict the heat output of the heating boiler in the future Output H _boil ;

并做取整运算得

将相同的的用户分为同一组，s_i＝l，总计为L组(L为自然数；v为冷水在管道中的流速)；2.3) User grouping: Calculate the equivalent distance from each user to the cold source

and do the rounding operation to get

will be the same The users are divided into the same group, s _i =l, total is L group (L is a natural number; v is the flow velocity of cold water in the pipeline);

2.4) For the L groups obtained in 2.3), calculate the total cooling load H _load (l) and air conditioner capacity P _EHP (l) of all users in each group

H_i(t，l)为第l组用户i在t时刻的制冷负荷

H _i (t, l) is the cooling load of user i in group l at time t

为第l组用户i的空调器容量

is the air conditioner capacity of user i in group l

3) Control calculation

Substitute the parameters calculated and predicted in 1) into the following control calculations:

(3.1) Objective function

$\mathrm{\&Delta;p}=\sqrt{\underset{t=0}{\overset{T}{\mathrm{\&Sigma;}}}{(p_{\mathrm{wind}}\left(t\right)-P_{\mathrm{wind}}^{\mathrm{need}})}^2/(T+1)}$ Formula 1)

Among them, Δp is the standard error between the equivalent power generation output of the adjusted wind turbine and the target power generation output, in MW;

p _wind (t) is the equivalent power generation output of the adjusted wind energy unit, unit MW;

Power generation output for the target, unit MW.

The expression of p _wind (t) is as follows:

p _wind (t)＝P _wind (t)+(p _comb (t)-P _comb (t))-p _EHPs (t) formula (2)

Among them, p _wind (t) is the equivalent power generation output of the wind turbine after adjustment, in MW;

P _wind (t) is the power generation output of the wind power generating set predicted in step 2.2), the unit is MW;

p _comb (t) is the power generation output of the adjusted gas combined cycle unit A, unit MW;

P _comb (t) is the power generation output of the gas-fired combined cycle unit A predicted in step 2.2), in MW;

p _EHPs (t) is the power consumption of all user air conditioners at time t, in MW.

(3.2) Constraint equation

3.2.1 Heat load balance equation

The air conditioner replaces the hot water heating output of the gas combined cycle unit with electric refrigeration (assuming that the conversion efficiency of hot water and cold water between the gas combined cycle unit and the centralized heat absorption chiller is 1) is the core of the method, if Δh (t) represents the insufficient hot water heating power of the gas combined cycle unit in the tth period, then its expression is:

Δh(t)＝|(H _comb (t)+H _boil (t))-(h _comb (t)+h _boil (t))| formula (3)

Among them, Δh(t) represents the insufficient hot water heating power of the gas combined cycle unit in the tth period, unit MW

H _comb (t)+H _boil (t) is the predicted heating heat output of gas combined cycle unit, unit MW;

h _comb (t)+h _boil (t) is the heating heat output of the adjusted gas combined cycle unit, in MW.

Insufficient hot water supply of gas-fired combined cycle units in period t is obtained by each user group using air conditioners to consume electricity for cooling. Due to the delay of cold water transmission, there is also a delay in the impact of insufficient cold water, and this delay varies with user groups. changes with distance. For example, according to the above, all users are divided into approximate 0, 1, .., L user groups, for the first user group, the time for cold water to flow to it is a unit scheduling time, so the cold water shortage will also be at t The +1 time period affects the first user group, and similarly, the lack of cold water will affect the l-th user group in the t+l time period. Finally, as mentioned above, the insufficient hot water supply of the gas-fired combined cycle unit in the t-th period will be compensated by the air conditioners in the 0-L user group through electricity consumption during the t-(t+l) period respectively. The specific formula is:

$\mathrm{\&Delta;h}\left(t\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{h}_{\mathrm{EHP}}(t+l,l)$ (T≤t+l≤2T) formula (4)

Among them, _hEHP (t+l, l) is the sum of cooling power of user air conditioners in group l at time t+l, and the unit is MW.

If _hEHP (t, l) in the formula can take 0, on the one hand, not all user groups participate in the compensation in certain time periods; If the user group is located at the remote end, then these user groups will not participate in the compensation.

3.2.2 Constraints of gas combined cycle unit:

$h_{\mathrm{comb}}\left(t\right)=f_{\mathrm{comb}}\left(t\right)\&Center\; Dot;{\mathrm{\&eta;}}_{\mathrm{comb}}^q;$ Formula (5)

$p_{\mathrm{comb}}\left(t\right)=f_{\mathrm{comb}}\left(t\right)\&CenterDot;{\mathrm{\&eta;}}_{\mathrm{comb}}^e;$ Formula (6)

为燃气联合循环的联合循环发电效率。同时在方法概述一节提到为了保证燃气联合循环机组依然能够满足原有区域电力负荷的需求，可以另外限制燃气联合循环发电出力大于原计划发电出力：In the above formulas (5) to (6), h _comb (t) is the thermal output of the adjusted gas combined cycle, unit MW; f _comb (t) is the power consumption of the gas combined cycle; p _comb (t) is the adjusted Electric output of post-gas combined cycle, unit MW; is the combined cycle thermal efficiency of the gas combined cycle;

is the combined cycle power generation efficiency of the gas-fired combined cycle. At the same time, in the method overview section, it is mentioned that in order to ensure that the gas combined cycle unit can still meet the demand of the original regional power load, the power generation output of the gas combined cycle can be limited to be greater than the original planned power generation output:

p _comb (t) ≥ P _comb formula (7);

3.2.3 User-side air conditioner constraints

Cooling power ratio constraint

h _EHP (t, l) = COP _EHP p _EHP (t, l) formula (8)

Air conditioner output upper limit

0≤p _EHP (t, l)≤min(P _EHP (l), H _load (l)/COP) formula (9)

Among them, _hEHP (t, l) is the sum of the cooling power of the user air conditioners of the lth group at time t, and the unit is MW;

COP _EHP is the coefficient of performance of the air conditioner;

p _EHP (t, l) is the sum of power consumption of user air conditioners in group l at time t, unit MW.

Finally, the power consumption of the air conditioner for cooling can not only compensate for the shortage of cold water cooling, but also increase the load during low power periods. Therefore, it is necessary to find the sum of the power consumption of air conditioners for all user groups in each period:

$p_{\mathrm{EHPs}}\left(t\right)=\underset{l=0}{\overset{L}{\mathrm{\&Sigma;}}}{p}_{\mathrm{EHP}}(t,l)$ Formula (10)

4) Send control signals to supply and user-execute actions

According to 3) the execution variable obtained after optimization, the execution variable signal is sent to the supply side and the user, and specific actions are performed, as follows:

The power generation output p _comb (t) and heat output h _comb (t) of the gas combined cycle unit of the gas combined cycle unit, the heat output h _boil (t) signal of the heating boiler of the gas combined cycle unit, control the gas combined cycle unit in the future Adjust the actions of each period of time

B user air conditioner power consumption p _EHP (t, l) and cooling capacity h _EHP (t, l) at different times, control the heating capacity of the air conditioner at different distances from the user side, and turn off the cooling fan coil.

The power generation output p _comb (t) and heat output h _comb (t) of the gas combined cycle unit of the gas combined cycle unit, the heat output h _boil (t) signal of the heating boiler of the gas combined cycle unit and the air conditioner consumption of the user at different times The electricity p _EHP (t, l) and the cooling capacity h _EHP (t, l) can be obtained by combining the above formulas (1) to (10).

Please refer to Figure 6. It can be seen from the figure that after adjustment by the dispatching method of the invention, the user's electricity load is basically consistent with the target load curve.

The invention adjusts the power generation of the gas combined cycle unit by reducing the output of cold water, and finally adjusts the power load. In this way, the predicted power load can be consistent with the target load on the basis of greatly saving energy.

The above is only one embodiment of the present invention, not all or the only embodiment. Any equivalent transformation of the technical solution of the present invention adopted by those of ordinary skill in the art by reading the description of the present invention is the right of the present invention. covered by the requirements.

Claims (8)

1. A combined cooling and power generation system comprising wind power and gas combined cycle unit, characterized in that: comprising: A gas-fired combined cycle unit (A) for generating electricity and hot water; A wind turbine (B) for generating electricity; Centralized heat absorption chiller, connected to the hot water outlet of the gas combined cycle unit (A), to convert hot water into cold water; An air conditioner (108) connected in parallel with the gas combined cycle unit (A) and the wind power generator, the air conditioner (108) is driven by the electric energy generated by the gas combined cycle unit (A) and the wind power generator to generate refrigeration cold wind; An air conditioner remote control switch (117) for controlling the air conditioner (108); A refrigeration fan coil (110) connected to the centralized heat absorption refrigerator, the cold water produced by the centralized heat absorption refrigerator flows into the refrigeration fan coil (110) to generate refrigeration and cold air; A refrigeration fan coil cold water consumption meter (111), used to detect the data of cold water consumption of the refrigeration fan coil (110); A remote control switch (116) for the cooling fan coil flow valve for controlling the cooling fan coil (110); The first remote centralized controller (1121) collects the heating output hot water flow and power generation output electricity of the gas combined cycle unit (A), and transmits the heating output hot water flow and power generation output electricity data to the comprehensive dispatching control device (115 ); The second remote centralized controller (1122), which stores the distance information between the cooling fan coil (110) and the gas combined cycle unit (A), collects the cold water detected by the cooling fan coil cold water consumption meter (111) Consumption data, then the above-mentioned cold water consumption data and the distance data between the refrigeration fan coil unit (110) and the gas combined cycle unit (A) are transmitted to the comprehensive dispatching control device (115); The third remote centralized controller (1123), collects the power generation output power of the wind power generating set, and transmits the power generation output power data to the comprehensive dispatching control device (115); The integrated scheduling control device (115) calculates and generates the final dispatching control of the power generation output and heat output of the gas combined cycle unit (A) and the user's different time The control signal of the power consumption and cooling capacity of the air conditioner; After the first remote centralized controller (1121) receives the scheduling control signal sent by the comprehensive scheduling control device (115), it uses the scheduling control signal to control the action of the executive device of the gas combined cycle unit (A); After the second remote centralized controller (1122) receives the dispatching control signal sent by the comprehensive dispatching control device (115), it uses the dispatching control signal to drive the remote control switch (117) of the air conditioner and the remote control of the cooling fan coil water valve respectively. Switch (116) executes the switch machine action. 2. A cogeneration system comprising wind power and gas combined cycle units according to claim 1, characterized in that, The remote control switch (116) of the refrigerating fan coil flow valve is remotely coupled with the comprehensive scheduling control device (115) through the second remote centralized controller (112); The remote control switch (117) of the air conditioner is coupled with the comprehensive dispatching control device (115) by remote control through a second remote centralized controller; The control execution device of the gas combined cycle unit is coupled with the comprehensive scheduling control device (115) in a remote manner through the first remote centralized controller; The gas-fired combined cycle unit control execution device (118) controls the action of the coal-fired feed valve, boiler steam inlet valve, steam extraction valve and power generation steam flow valve connected to it according to the obtained scheduling control signal. 3. A cogeneration system comprising wind power and gas combined cycle units according to claim 1, characterized in that the integrated scheduling control device (115) comprises: A first data receiving unit (200) that receives the heating output hot water flow and power generation output of the gas combined cycle unit (A) sent by the first remote centralized controller; A second data receiving unit (201) that receives the cooling water consumption data of the cooling fan coil unit and the user pipeline distance information sent by the second remote centralized controller; A third data receiving unit that receives the power generation output data of the wind power generating set sent by the third remote centralized controller; a data decoder (202) for decoding data received by the first, second and third data receiving units; a data storage (203) for storing said decoded data; A scheduling control signal calculation unit (204) that calculates the data stored in the data memory and generates a scheduling control signal; a signal transcoder (205) for encoding said dispatch control signal; and The coded scheduling control signals are respectively transmitted to the sending units of the first remote centralized controller and the second remote centralized controller (206). 4. A combined cooling and power generation system including wind power and gas combined cycle units according to claim 1, wherein the execution device of the gas combined cycle unit includes a scheduling control signal transceiving code storage unit (302), The driving circuit (303) and the mechanical gear control device (304), the dispatching control signal is decoded by the dispatching control signal sending and receiving code storage unit to generate a dispatching control command of the gas combined cycle unit, and the control command outputs an electric drag signal through the driving circuit and The mechanical gear control device is triggered, and the mechanical gear control device then controls the action of the coal-fired feed valve, the action of the steam extraction valve and the action of the power generation steam flow valve of the gas combined cycle unit. 5. A cogeneration system comprising wind power and gas-fired combined cycle units according to claim 1, characterized in that the integrated scheduling control device (115) communicates with the cloud computing computing service system through the power optical fiber (120) (917) connect and drive the calculation of the cloud computing service system (917) to obtain a scheduling control signal; the integrated scheduling control device (115) receives the scheduling obtained through the calculation of the cloud computing computing service system (917) through the power optical fiber (120) control signal, and then distribute the scheduling control signal to the first remote centralized controller and the second remote centralized controller via power cable or wireless transmission. 6. A combined cooling and power generation system including wind power and gas combined cycle units according to claim 1, wherein the second remote centralized controller includes sequentially connected refrigeration cold water flow pulse counters, pulse signal encoding Converter, metering signal amplifying transmitter, and interconnected control signal receiving decoder and control signal remote control transmitter; The refrigerating cold water flow pulse counter is connected to the refrigerating fan coil cold water consumption meter (111) for detecting the refrigerating flow data of the refrigerating fan coil cooling water consumption meter (111), and the refrigerating cold water flow pulse counter passes the detected refrigerating flow data through The pulse signal code converter and metering signal amplification transmitter are processed and sent to the integrated dispatching control device (115); The control signal receiving decoder receives and decodes the scheduling control information sent by the integrated scheduling control device (115), and then sends the control signal to the remote control switch of the air conditioner (117) and the remote control of the cooling fan coil water valve through the control signal remote control transmitter. Switch (116) executes the switch machine action. 7. A scheduling method for a combined cooling and power generation system including wind power and gas combined cycle units according to claim 1, characterized in that: comprising the following steps: 1) Measure the following data: measure once every ΔT period, where ΔT is the sampling period, the number of samples is T, and T is a natural number 1.1) Measuring the supply side: the first remote centralized controller (1121) collects the power generation output P _comb (t) and heat output H comb (t) of the gas combined cycle unit of the gas combined cycle unit (A), the heat treatment H _comb (t) of the heating boiler _boil (t), the third remote centralized controller collects the power generation output of the wind turbine

1.2) User side: the second remote centralized controller (1122) collects the following data: (a) The pipe distance S _i between the refrigeration fan coils of N users and the gas combined cycle unit (A); (b) Cooling consumption H _i (t) of cooling fan coils of N users; (c) Installed capacity of air conditioners for N users

2) Calculate: 2.1) Calculating the total power generation output of wind turbines

M is the number of wind turbines; 2.2) According to the total power generation output of wind turbines calculated in 2.1) Use the statistical analysis method to calculate and predict the power generation output P _wind (t) of the wind power generator set in the future; according to the heat output H _comb (t) of the gas combined cycle unit (A) collected in 1.1), predict the future period The thermal output H _comb (t) of the gas combined cycle unit (A) of the gas combined cycle unit (A); according to the power generation output P _comb (t) of the gas combined cycle unit (A) collected in 1.1), it is predicted for a period of time in the future The power generation output P _comb (t) of the gas combined cycle unit (A) of the gas combined cycle unit (A); according to the heat output H _boil of the heating boiler of the gas combined cycle unit (A) in the future, predict the heat output of the heating boiler in the future H _boil ; 2.3) Divide all users into L groups according to the distance S _i between the cooling fan coil unit (110) and the gas combined cycle unit (A), where L is a natural number, and then calculate the total cooling load H _load of all users in each group (l) = ∑H _i (t, l) and air conditioner capacity

H _i (t, l) is the refrigeration load of group l refrigeration fan coil at time t,

is the air conditioner capacity of the cooling fan coil unit of group l, where the user grouping method is: first calculate the equivalent distance between the cooling fan coil unit (110) and the gas combined cycle unit (A)

v is the flow velocity of cold water in the pipeline, and then

Rounding to get s _i , then, users with the same _si are divided into the same group, wherein, s _i =l, l is the lth group in the L grouping; 2.4 Iteratively calculate the power generation output p _comb (t) and heat output h comb (t) of the gas combined cycle unit of the adjusted gas combined cycle unit and the heat output h _comb (t) of the heating boiler of the gas combined cycle unit according to the parameters measured and predicted above _boil , air conditioner power consumption p _EHP (t, l) and cooling capacity h _EHP (t, l) at different times of the user. 8. A scheduling method for a combined cooling and power generation system including wind power and gas combined cycle units according to claim 7, characterized in that: the adjusted power generation output p _comb (t) and heat output h _comb of the gas combined cycle (t), the heat output h _boil of the heating boiler of the gas-fired combined cycle unit, the power consumption p _EHP (t, l) of the air conditioner at different times of the user, and the calculation method of the cooling capacity h _EHP (t, l) are: combined with the following Formulas (1) to (9) can be known that in the case of the smallest Δp, the adjusted power generation output p _comb (t) and heat output h _comb (t) of the gas combined cycle unit, the heat output of the heating boiler of the gas combined cycle unit Output h _boil , air conditioner power consumption p _EHP (t, l) at different times of the user, and cooling heat h _EHP (t, l): (A) Establish the objective function $\mathrm{<span\; class="notranslate">\; \&Delta;p</span>}<span\; class="notranslate">\; =</span>\sqrt{\underset{\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; T</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; wind</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; wind</span>}}^{\mathrm{<span\; class="notranslate">\; need</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; /</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; T</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$ Among them, Δp is the standard error between the equivalent power generation output of the wind turbine after adjustment and the target power generation output, in MW; p _wind (t) is the equivalent power generation output of the wind turbine after adjustment, in MW;

Power generation output for the target, unit MW; The expression of p _wind (t) is as follows: p _wind (t)＝P _wind (t)+(p _comb (t)-P _comb (t))-p _EHPs (t) (2) Among them, p _wind (t) is the equivalent power generation output of the wind turbine after adjustment, in MW; P _wind (t) is the power generation output of the wind power generating set predicted in step 2.2), the unit is MW; p _comb (t) is the power generation output of the adjusted gas combined cycle unit A, unit MW; P _comb (t) is the power generation output of the gas-fired combined cycle unit A predicted in step 2.2), in MW; p _EHPs (t) is the power consumption of all user air conditioners at t, unit MW; (B) Establish constraint equations Heat load balance equation: Δh(t)＝|(H _comb (t)+H _boil (t))-(h _comb (t)+h _boil (t))| (3) $\mathrm{<span\; class="notranslate">\; \&Delta;h</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; L</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; h</span>}}_{\mathrm{<span\; class="notranslate">\; EHP</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; T</span>}<span\; class="notranslate">\; \&le;</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; \&le;</span>\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; T</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; )</span>$ Among them, Δh(t) represents the insufficient hot water heating power of the gas combined cycle unit in the tth period, unit MW; H _comb (t)+H _boil (t) is the predicted heating heat output of gas combined cycle unit, unit MW; h _comb (t)+h _boil (t) is the heating heat output of the adjusted gas combined cycle unit, unit MW; h _EHP (t+l, l) is the sum of cooling power of user air conditioners in group l at time t+l, unit MW; Gas combined cycle unit constraints: ${\mathrm{<span\; class="notranslate">\; h</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; f</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; \&eta;</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}^{\mathrm{<span\; class="notranslate">\; q</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 5</span>}<span\; class="notranslate">\; )</span>$ ${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; f</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&Center\; Dot;</span>{\mathrm{<span\; class="notranslate">\; \&eta;</span>}}_{\mathrm{<span\; class="notranslate">\; comb</span>}}^{\mathrm{<span\; class="notranslate">\; e</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 6</span>}<span\; class="notranslate">\; )</span>$ In the above formulas (5) to (6), h _comb (t) is the thermal output of the adjusted gas combined cycle, unit MW; f _comb (t) is the power consumption of the gas combined cycle; p _comb (t) is the adjusted Electric output of post-gas combined cycle, unit MW;

is the combined cycle thermal efficiency of the gas combined cycle;

is the combined cycle power generation efficiency of the gas-fired combined cycle; User-side air conditioner constraints: Cooling power ratio constraints: h _EHP (t, l) = COP _EHP p _EHP (t, l) (7) Air conditioner output upper limit: 0≤p _EHP (t, l)≤min(P _EHP (l), H _load (l)/COP _EHP ) (8) Among them, _hEHP (t, l) is the sum of the cooling power of the user air conditioners of the lth group at time t, and the unit is MW; COP _EHP is the coefficient of performance of the air conditioner; p _EHP (t, l) is the sum of power consumption of user air conditioners in group l at time t, unit MW; Air conditioner power consumption for all user groups: ${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; EHPs</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; L</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; EHP</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 9</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; .</span>$

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