CN108233422A - A kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL - Google Patents
A kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL Download PDFInfo
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- CN108233422A CN108233422A CN201810135327.8A CN201810135327A CN108233422A CN 108233422 A CN108233422 A CN 108233422A CN 201810135327 A CN201810135327 A CN 201810135327A CN 108233422 A CN108233422 A CN 108233422A
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention belongs to light to store up micro-capacitance sensor technical field, more particularly to a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL.Based on photovoltaic and load estimation, optimized operation control is realized respectively under grid-connected and off-network to light storage micro-capacitance sensor.The present invention is applied to light using photovoltaic and load prediction and stores up micro-capacitance sensor, reaches and stabilizes photovoltaic, peak load shifting, smooth output equivalent fruit, realizes that economic benefit improves 5% 10%.
Description
Technical field
The invention belongs to light to store up micro-capacitance sensor technical field, more particularly to a kind of light storage micro-capacitance sensor operation based on PREDICTIVE CONTROL
Control method.
Background technology
Since distributed photovoltaic power generation has, power supply is flexible, save power transmission and transformation investment, reduces line loss, resource and environment
The advantages that friendly, provides stable, reliable electric energy supply to the user, and the energy in bulk power grid failure by being connect with bulk power grid
Off-grid operation ensure that the continuity of power supply and high power quality.Recent years develops rapidly, and as the one of country
Item developing long-term strategy.
But photovoltaic distributed power generation, there is also the characteristics of randomness is strong, intermittence is apparent, output fluctuating range is big, wave
Therefore dynamic frequency also irregularities, add in energy storage composition light storage micro-capacitance sensor, realize the smooth output of photovoltaic generation, solve demand
The reliable and stable power supply of side load, and realize that peak load shifting realizes economic electricity consumption for user by effective control mode, it builds
If power grid friendly micro-capacitance sensor.
Light storage micro-capacitance sensor mainly by distributed photovoltaic power generation system, battery energy storage system, load system and relevant is matched
The compositions such as electricity, Energy Management System (EMS) including hair, it is defeated, match, with the small-sized local power net including management system, and pass through
Unique points of common connection access bulk power grid, can be incorporated into the power networks or independent operating.Wherein, when having power grid support, light
Energy-storage system is lied prostrate as the main power supply micro battery in micro-capacitance sensor, load electricity consumption mostlys come from photovoltaic generation, and energy-storage system is then
It can smoothly photovoltaic generation fluctuate, improve the power grid access friendly of micro battery；During grid power blackout, light storage micro-capacitance sensor then starts should
Anxious stand-by power supply function establishes the support of microgrid busbar by energy accumulation current converter, and photovoltaic generating system can be that the load in micro-capacitance sensor carries
For lasting energy supply.
China only subsidizes parallel net type distributed photovoltaic at present, and the subsidy amount of money will constantly decline, and add in energy storage
Although composition light storage micro-capacitance sensor solves the problems such as electricity consumption reliability, but increasing cost causes increase return period, investment return
Than being deteriorated.
Invention content
To solve the above problem of the existing technology, the present invention provides a kind of light based on PREDICTIVE CONTROL to store up micro-capacitance sensor
Progress control method can realize maximization of economic benefit.To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL, it is characterized in that：Based on photovoltaic and load estimation, light is stored up micro-
Power grid realizes optimized operation control respectively under grid-connected and off-network, is as follows：
Under grid-connect mode：
(1) electricity price paddy period, the charging of energy-storage system constant voltage mode, electricity are charged to setting value；
(2) the electricity price peak period, when photovoltaic power value is less than bearing power value, the electric discharge of energy-storage system constant power mode is put
Electrical power value=coefficient * (bearing power value-photovoltaic power value), coefficient value range 0~1, can setting and modifying, work as energy-storage system
When electricity is preferably minimized early warning value, discharge power is reduced to relatively low definite value, when energy storage electricity is preferably minimized electricity alarming value, stops
Electric discharge, micro-capacitance sensor only take electricity from power grid；
When photovoltaic power value is more than bearing power value, the charging of energy-storage system constant power mode, charge power value=coefficient *
(photovoltaic power value-bearing power value), coefficient value range 0~1, can setting and modifying,
When energy-storage system electricity is raised to highest early warning value, charge power is reduced to relatively low definite value, when energy storage electricity is raised to most
During high electricity alarming value, stop charging, the extra electricity online of photovoltaic generation；
(3) electricity price usually section 1, when normal in prediction photovoltaic generation future short period, energy-storage system is according to invariable power mould
Formula discharge, discharge power value=coefficient * (bearing power value-photovoltaic power value), coefficient value range 0~1, can setting and modifying,
When energy-storage system electricity is preferably minimized early warning value, discharge power is reduced to relatively low definite value, when energy storage electricity is preferably minimized electricity report
During alert value, stop electric discharge, micro-capacitance sensor only takes electricity from power grid；It can not work normally, store up when in the prediction photovoltaic generation following short time
It can system standby；
(4) electricity price usually section 2, when photovoltaic power value is more than bearing power value, the charging of energy-storage system constant power mode is filled
Electrical power value=coefficient * (photovoltaic power value-bearing power value), coefficient value range 0~1, can setting and modifying, work as energy-storage system
When electricity is raised to highest early warning value, charge power is reduced to relatively low definite value, when energy storage electricity is raised to highest electricity alarming value, stops
Charging, the extra electricity online of photovoltaic generation；When photovoltaic power value is less than bearing power value, energy-storage system is standby；
(5) electricity price usually section 3, when energy-storage system remaining capacity is more than minimum electricity early warning value, energy-storage system is according to permanent work(
Rate pattern is discharged, and discharge power value=coefficient * (bearing power value-photovoltaic power value), coefficient value range 0~1 can set and repair
Change, when energy-storage system electricity is preferably minimized early warning value, discharge power is reduced to relatively low definite value, when energy storage electricity is preferably minimized electricity
During alarming value, energy-storage system is standby, and micro-capacitance sensor only takes electricity from power grid；
Micro-grid connection pattern goes to off-network pattern：
(1) predict that generated output is more than load power in photovoltaic system future short period, energy-storage system electricity is less than most
During high early warning value, the charging of energy-storage system constant power mode, charge power value=(photovoltaic power value-bearing power value), load is just
Often work；Energy-storage system electricity be more than highest early warning value, and less than when highest electricity alarming value when, charge power is reduced to relatively low fixed
Value, photovoltaic system limitation generated output, photovoltaic power=coefficient * load powers, coefficient value 1-1.1, load normal work；
When energy-storage system electricity rises to highest alarming value, energy-storage system starts to discharge with relatively low definite value, at this point, limitation photovoltaic generation work(
Rate, photovoltaic power=coefficient * load powers, coefficient value 0.9-1, load normal work；
(2) predict that generated output is less than load power, energy-storage system electricity energy storage system in photovoltaic system future short period
When electricity of uniting is more than minimum early warning value, the electric discharge of energy-storage system constant power mode, discharge power value=coefficient * (bearing power value-light
Lie prostrate performance number), coefficient value 1-1.1, load normal work；Energy-storage system electricity be less than highest early warning value, and more than when most
During low battery alarming value, load system retains first order load, discharge power value=coefficient * (bearing power value-photovoltaic power value)；
Coefficient value is 1-1.1, when energy-storage system electricity minimizes alarming value, shuts down load system.
The electricity price paddy period under the grid-connect mode is the same day 23:00~next day 7:00, charging setting value is energy-storage system
The 50%-60% of specified total electricity.
The electricity price peak period under the grid-connect mode is the same day 8:30~same day 11:30th, the same day 16:00~same day 21:00,
Minimum early warning value is the 30%-35% of the specified total electricity of energy-storage system, and highest early warning value is the specified total electricity of energy-storage system
85%-90%, minimum electricity alarming value are the 20%-25% of the specified total electricity of energy-storage system, and highest electricity alarming value is energy storage
The 95%-98% of system nominal total electricity, relatively low definite value are the 1%-2% of the specified total electricity of energy-storage system.
Usually section 1 is the same day 7 to electricity price under the grid-connect mode:00~same day 8:30, the interior following short time is 1 hour
Interior, minimum early warning value is the 30%-35% of the specified total electricity of energy-storage system, and minimum electricity alarming value is the specified total electricity of energy-storage system
The 20%-25% of amount, relatively low definite value are the 1%-2% of the specified total electricity of energy-storage system.
Usually section 2 is the same day 11 to electricity price under the grid-connect mode:30~same day 16:00, highest early warning value is energy storage system
The 85%-90% for specified total electricity of uniting, highest electricity alarming value is the 95%-98% of the specified total electricity of energy-storage system, relatively low fixed
It is worth the 1%-2% for the specified total electricity of energy-storage system.
Usually section 3 is the same day 21 to electricity price under the grid-connect mode:00~same day 23:00, minimum early warning value is energy storage system
Unite the 35% of specified total electricity, minimum electricity alarming value is the 20%-25% of the specified total electricity of energy-storage system, and relatively low definite value is storage
The 1%-2% of energy system nominal total electricity.
The micro-grid connection pattern is gone in the following short time under off-network pattern as in 1 hour, highest early warning value is
The 85%-90% of the specified total electricity of energy-storage system, highest electricity alarming value are the 95%-98% of the specified total electricity of energy-storage system,
Minimum early warning value is the 30%-35% of the specified total electricity of energy-storage system, and minimum electricity alarming value is the specified total electricity of energy-storage system
20%-25%, relatively low definite value be the specified total electricity of energy-storage system 1%-2%.
The present invention is applied to light using photovoltaic and load prediction and stores up micro-capacitance sensor, reaches and stabilizes photovoltaic, peak load shifting, smooth defeated
Go out and other effects, realize that economic benefit improves 5%-10%.
Specific embodiment
The present invention is further described with reference to embodiments：
Embodiment 1
A kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL, based on photovoltaic and load estimation, stores up light micro-
Power grid realizes optimized operation control respectively under grid-connected and off-network, is as follows：
Under grid-connect mode：
(1) (the same day 23 electricity price paddy period:00~next day 7:00), energy-storage system constant voltage mode charges, and electricity is charged to setting
It is worth (the 50% of the specified total electricity of energy-storage system)；
(2) (the same day 8 electricity price peak period:30~same day 11:30th, the same day 16:00~same day 21:00), when photovoltaic power value
During less than bearing power value, the electric discharge of energy-storage system constant power mode, discharge power value=coefficient * (bearing power value-photovoltaic power
Value), coefficient value range 0~1, can setting and modifying, when energy-storage system electricity is preferably minimized early warning value (the specified total electricity of energy-storage system
The 35% of amount) when, discharge power is reduced to relatively low definite value (the 1% of the specified total electricity of energy-storage system), when energy storage electricity is preferably minimized
During electricity alarming value (the 25% of the specified total electricity of energy-storage system), stop electric discharge, micro-capacitance sensor only takes electricity from power grid；Work as photovoltaic power
When value is more than bearing power value, the charging of energy-storage system constant power mode, charge power value=coefficient * (photovoltaic power value-load work(
Rate value), coefficient value range 0~1, can setting and modifying, when energy-storage system electricity is raised to highest early warning value, (energy-storage system is specified total
The 85% of electricity) when, charge power is reduced to relatively low definite value (the 1% of the specified total electricity of energy-storage system), when energy storage electricity is raised to most
During high electricity alarming value (the 95% of the specified total electricity of energy-storage system), stop charging, the extra electricity online of photovoltaic generation；
(3) electricity price usually (same day 7 of section 1:00~same day 8:30), when (one is small in prediction photovoltaic generation future short period
When it is interior) normally, energy-storage system discharges according to constant power mode, discharge power value=coefficient * (bearing power value-photovoltaic power
Value), coefficient value range 0~1, can setting and modifying, when energy-storage system electricity is preferably minimized early warning value (the specified total electricity of energy-storage system
The 35% of amount) when, discharge power is reduced to relatively low definite value (the 1% of the specified total electricity of energy-storage system), when energy storage electricity is preferably minimized
During electricity alarming value (the 25% of the specified total electricity of energy-storage system), stop electric discharge, micro-capacitance sensor only takes electricity from power grid；When prediction photovoltaic
Power generation future can not work normally for one hour, and energy-storage system is standby；
(4) electricity price usually (same day 11 of section 2:30~same day 16:00), when photovoltaic power value is more than bearing power value, storage
The constant power mode charging of energy system, charge power value=coefficient * (photovoltaic power value-bearing power value), coefficient value range 0~
1, can setting and modifying, when energy-storage system electricity is raised to highest early warning value (the 85% of the specified total electricity of energy-storage system), charge work(
Rate is reduced to relatively low definite value (the 1% of the specified total electricity of energy-storage system), when energy storage electricity is raised to highest electricity alarming value (energy-storage system
The 95% of specified total electricity) when, stop charging, the extra electricity online of photovoltaic generation；When photovoltaic power value is less than bearing power value
When, energy-storage system is standby；
(5) electricity price usually (same day 21 of section 3:00~same day 23:00), when energy-storage system remaining capacity is pre- more than minimum electricity
Alert (the 35% of the specified total electricity of energy-storage system) value, energy-storage system discharge according to constant power mode, discharge power value=coefficient *
(bearing power value-photovoltaic power value), coefficient value range 0~1, can setting and modifying, when energy-storage system electricity be preferably minimized it is pre-
During alert value (the 35% of the specified total electricity of energy-storage system), discharge power be reduced to relatively low definite value (the specified total electricity of energy-storage system
1%), when energy storage electricity is preferably minimized electricity alarming value (the 25% of the specified total electricity of energy-storage system), energy-storage system is standby, micro-
Power grid only takes electricity from power grid.
Micro-grid connection pattern goes to off-network pattern：
(1) predict that generated output is more than load power, energy-storage system (in one hour) in photovoltaic system future short period
When electricity is less than highest early warning value (the 85% of the specified total electricity of energy-storage system), the charging of energy-storage system constant power mode, charge work(
Rate value=(photovoltaic power value-bearing power value), load normal work；Energy-storage system electricity is more than highest early warning value (energy storage system
Unite the 85% of specified total electricity), and less than when highest electricity alarming value (the 95% of the specified total electricity of energy-storage system) when, charge work(
Rate is reduced to relatively low definite value (the 1% of the specified total electricity of energy-storage system), photovoltaic system limitation generated output, photovoltaic power=coefficient *
Load power, coefficient value 1-1.1, load normal work；Energy-storage system electricity rises to highest alarming value, and (energy-storage system is specified
The 95% of total electricity) when, energy-storage system starts to discharge with relatively low definite value (1% of the specified total electricity of energy-storage system), at this point, limitation
Photovoltaic generation power, photovoltaic power=coefficient * load powers, coefficient value 0.9-1, load normal work；
(2) predict that generated output is less than load power, energy-storage system (in one hour) in photovoltaic system future short period
When electricity energy-storage system electricity is more than minimum early warning value (the 35% of the specified total electricity of energy-storage system), energy-storage system constant power mode
Electric discharge, discharge power value=coefficient * (bearing power value-photovoltaic power value), coefficient value 1-1.1, load normal work；Storage
Can system charge be less than highest early warning value (the 35% of the specified total electricity of energy-storage system), and more than when (the storage of minimum electricity alarming value
The 25% of energy system nominal total electricity) when, load system reservation first order load, discharge power value=coefficient * (bearing power value-
Photovoltaic power value)；Coefficient value is 1-1.1, energy-storage system electricity minimize alarming value (the specified total electricity of energy-storage system
25%) when, load system is shut down.
Embodiment 2
A kind of each step of the light storage micro-grid operational control method of described in the present embodiment based on PREDICTIVE CONTROL with
Identical in embodiment 1, different technical parameters are：
1) charging setting value is the 55% of the specified total electricity of energy-storage system；
2) minimum early warning value is the 32% of the specified total electricity of energy-storage system；
3) highest early warning value is the 87% of the specified total electricity of energy-storage system；
4) minimum electricity alarming value is the 22% of the specified total electricity of energy-storage system；
5) highest electricity alarming value is the 96% of the specified total electricity of energy-storage system；
6) relatively low definite value is the 1.5% of the specified total electricity of energy-storage system.
Embodiment 3
A kind of each step of the light storage micro-grid operational control method of described in the present embodiment based on PREDICTIVE CONTROL with
Identical in embodiment 1, different technical parameters are：
1) charging setting value is the 60% of the specified total electricity of energy-storage system；
2) minimum early warning value is the 30% of the specified total electricity of energy-storage system；
3) highest early warning value is the 90% of the specified total electricity of energy-storage system；
4) minimum electricity alarming value is the 20% of the specified total electricity of energy-storage system；
5) highest electricity alarming value is the 98% of the specified total electricity of energy-storage system；
6) relatively low definite value is the 2% of the specified total electricity of energy-storage system.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL, it is characterized in that：It is right based on photovoltaic and load estimation
Light stores up micro-capacitance sensor and realizes optimized operation control respectively under grid-connected and off-network, is as follows：
Under grid-connect mode：
(1) electricity price paddy period, the charging of energy-storage system constant voltage mode, electricity are charged to setting value；
(2) the electricity price peak period, when photovoltaic power value is less than bearing power value, the electric discharge of energy-storage system constant power mode, discharge work(
Rate value=coefficient * (bearing power value-photovoltaic power value), coefficient value range 0~1, can setting and modifying, when energy-storage system electricity
When being preferably minimized early warning value, discharge power is reduced to relatively low definite value, when energy storage electricity is preferably minimized electricity alarming value, stops putting
Electricity, micro-capacitance sensor only take electricity from power grid；
When photovoltaic power value is more than bearing power value, the charging of energy-storage system constant power mode, charge power value=coefficient * (light
Lie prostrate performance number-bearing power value), coefficient value range 0~1, can setting and modifying, when energy-storage system electricity is raised to highest early warning value
When, charge power is reduced to relatively low definite value, when energy storage electricity is raised to highest electricity alarming value, stops charging, photovoltaic generation is extra
Electricity is surfed the Internet；
(3) electricity price usually section 1, when normal in prediction photovoltaic generation future short period, energy-storage system is put according to constant power mode
Electricity, discharge power value=coefficient * (bearing power value-photovoltaic power value), coefficient value range 0~1, can setting and modifying, work as storage
When energy system charge is preferably minimized early warning value, discharge power is reduced to relatively low definite value, when energy storage electricity is preferably minimized electricity alarming value
When, stop electric discharge, micro-capacitance sensor only takes electricity from power grid；It can not work normally when in the prediction photovoltaic generation following short time, energy storage system
It unites standby；
(4) electricity price usually section 2, when photovoltaic power value is more than bearing power value, the charging of energy-storage system constant power mode, charge work(
Rate value=coefficient * (photovoltaic power value-bearing power value), coefficient value range 0~1, can setting and modifying, when energy-storage system electricity
When being raised to highest early warning value, charge power is reduced to relatively low definite value, when energy storage electricity is raised to highest electricity alarming value, stops filling
Electricity, the extra electricity online of photovoltaic generation；When photovoltaic power value is less than bearing power value, energy-storage system is standby；
(5) electricity price usually section 3, when energy-storage system remaining capacity is more than minimum electricity early warning value, energy-storage system is according to invariable power mould
Formula discharge, discharge power value=coefficient * (bearing power value-photovoltaic power value), coefficient value range 0~1, can setting and modifying,
When energy-storage system electricity is preferably minimized early warning value, discharge power is reduced to relatively low definite value, when energy storage electricity is preferably minimized electricity report
During alert value, energy-storage system is standby, and micro-capacitance sensor only takes electricity from power grid；
Micro-grid connection pattern goes to off-network pattern：
(1) predict that generated output is more than load power in photovoltaic system future short period, it is pre- that energy-storage system electricity is less than highest
During alert value, the charging of energy-storage system constant power mode, charge power value=(photovoltaic power value-bearing power value), the normal work of load
Make；Energy-storage system electricity be more than highest early warning value, and less than when highest electricity alarming value when, charge power is reduced to relatively low definite value,
Photovoltaic system limits generated output, photovoltaic power=coefficient * load powers, coefficient value 1-1.1, load normal work；Storage
When energy system charge rises to highest alarming value, energy-storage system starts to discharge with relatively low definite value, at this point, limitation photovoltaic generation power,
Photovoltaic power=coefficient * load powers, coefficient value 0.9-1, load normal work；
(2) predict that generated output is less than load power, energy-storage system electricity energy-storage system electricity in photovoltaic system future short period
When amount is more than minimum early warning value, the electric discharge of energy-storage system constant power mode, discharge power value=coefficient * (bearing power value-photovoltaic work(
Rate value), coefficient value 1-1.1, load normal work；Energy-storage system electricity be less than highest early warning value, and more than when minimum electricity
When measuring alarming value, load system retains first order load, discharge power value=coefficient * (bearing power value-photovoltaic power value)；Coefficient
Value is 1-1.1, when energy-storage system electricity minimizes alarming value, shuts down load system.
2. a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL according to claim 1, it is characterized in that：Institute
It is the same day 23 to state the electricity price paddy period under grid-connect mode:00~next day 7:00, charging setting value is the specified total electricity of energy-storage system
50%-60%.
3. a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL according to claim 1, it is characterized in that：Institute
It is the same day 8 to state the electricity price peak period under grid-connect mode:30~same day 11:30th, the same day 16:00~same day 21:00, minimum early warning value
For the 30%-35% of the specified total electricity of energy-storage system, highest early warning value is the 85%-90% of the specified total electricity of energy-storage system, most
Low battery alarming value is the 20%-25% of the specified total electricity of energy-storage system, and highest electricity alarming value is the specified total electricity of energy-storage system
The 95%-98% of amount, relatively low definite value are the 1%-2% of the specified total electricity of energy-storage system.
4. a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL according to claim 1, it is characterized in that：Institute
Stating the electricity price under grid-connect mode, usually section 1 is the same day 7:00~same day 8:30, the interior following short time is minimum early warning in 1 hour
It is worth the 30%-35% for the specified total electricity of energy-storage system, minimum electricity alarming value is the 20%- of the specified total electricity of energy-storage system
25%, relatively low definite value is the 1%-2% of the specified total electricity of energy-storage system.
5. a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL according to claim 1, it is characterized in that：Institute
Stating the electricity price under grid-connect mode, usually section 2 is the same day 11:30~same day 16:00, highest early warning value is the specified total electricity of energy-storage system
The 85%-90% of amount, highest electricity alarming value are the 95%-98% of the specified total electricity of energy-storage system, and relatively low definite value is energy storage system
The 1%-2% for specified total electricity of uniting.
6. a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL according to claim 1, it is characterized in that：Institute
Stating the electricity price under grid-connect mode, usually section 3 is the same day 21:00~same day 23:00, minimum early warning value is the specified total electricity of energy-storage system
The 30%-35% of amount, minimum electricity alarming value are the 20%-25% of the specified total electricity of energy-storage system, and relatively low definite value is energy storage system
The 1%-2% for specified total electricity of uniting.
7. a kind of light storage micro-grid operational control method based on PREDICTIVE CONTROL according to claim 1, it is characterized in that：Institute
Micro-grid connection pattern is stated to go in the following short time under off-network pattern as in 1 hour, highest early warning value is energy-storage system volume
Determine the 85%-90% of total electricity, 95%-98% of the highest electricity alarming value for the specified total electricity of energy-storage system, minimum early warning value
For the 30%-35% of the specified total electricity of energy-storage system, minimum electricity alarming value is the 20%- of the specified total electricity of energy-storage system
25%, relatively low definite value is the 1%-2% of the specified total electricity of energy-storage system.
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