CN104166946A

CN104166946A - Standby and peak shaving auxiliary service cost allocation method facilitating new energy grid-connected consumption

Info

Publication number: CN104166946A
Application number: CN201410403530.0A
Authority: CN
Inventors: 白宏; 李琰; 迟永宁; 陈贺; 魏林君; 王真; 苏媛媛
Original assignee: State Grid Corp of China SGCC; China Electric Power Research Institute Co Ltd CEPRI; State Grid Jiangsu Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; China Electric Power Research Institute Co Ltd CEPRI; State Grid Jiangsu Electric Power Co Ltd
Priority date: 2014-08-15
Filing date: 2014-08-15
Publication date: 2014-11-26
Anticipated expiration: 2034-08-15
Also published as: CN104166946B

Abstract

The invention provides a backup and peak-shaving auxiliary service cost allocation method for promoting new energy grid-connected consumption, which includes the following steps: determining the objective function and constraint conditions of the new energy grid-connected consumption model based on production simulation; Backup ancillary service cost behind the grid; calculation of new energy wind turbine revenue; calculation of backup ancillary service cost allocation; calculation of peak shaving auxiliary service allocation cost caused by wind power access. The invention provides a backup and peak-shaving auxiliary service cost allocation method that promotes new energy grid-connected consumption. By establishing a consumption model that considers the additional service cost caused by new energy grid-connected, the backup caused by new energy under different scenarios is analyzed. And peak shaving auxiliary service cost, put forward the apportionment scheme of auxiliary service cost after new energy is connected to the grid; it can effectively improve the enthusiasm of traditional power supply to provide auxiliary service and ensure the interests of providers, reduce curtailment of wind/light, and ensure the economic operation of the system.

Description

Cost allocation method for back-up and peak-shaving auxiliary services to promote new energy grid-connected consumption

技术领域technical field

本发明涉及一种分摊方法，具体涉及一种促进新能源并网消纳的备用及调峰辅助服务成本分摊方法。The invention relates to an apportionment method, in particular to a cost apportionment method for back-up and peak-shaving auxiliary services that promote grid-connected consumption of new energy.

背景技术Background technique

我国的风电发展呈现发展速度快、风电场规模大、输送距离远、输送电压高、处于电网末端等特点。由于我国风能资源丰富地区距离负荷中心较远，大规模的风力发电无法就地消纳，有又没有相应的辅助服务激励措施等因素，更加剧了风电对地区电网消纳能力的影响，弃风严重。my country's wind power development presents the characteristics of fast development, large-scale wind farms, long transmission distances, high transmission voltage, and being at the end of the power grid. Because areas rich in wind energy resources in my country are far away from load centers, large-scale wind power generation cannot be consumed locally, and there are no corresponding auxiliary service incentives and other factors, which exacerbate the impact of wind power on the regional power grid's consumption capacity. serious.

现阶段，不少发达国家已经成功实现了辅助服务与电能服务的解捆，开辟出了高效的在辅助服务市场，市场参与者分别提交备用容量报价和备用电量报价。根据容量价格进行排序。如果系统运行中需要这些发电机提供电量，则从容量价格中标的发电机组中按电量标价从低到高的次序获取所需电量。成功的报价者不论其是否被调度，都将得到一笔备用容量费用，在备用容量被调度加载时，报价者还将得到一笔电量电费。这种机制有利于提高机组提供备用辅助服务的积极性，从而为新能源的发展提供良好条件。At this stage, many developed countries have successfully realized the unbundling of ancillary services and electric energy services, and opened up an efficient ancillary service market, where market participants submit quotations for spare capacity and spare electricity respectively. Sort by capacity price. If these generators are required to provide electricity during system operation, the required electricity will be obtained from the generating units that win bids for capacity prices in the order of the electricity prices from low to high. Successful bidders will receive a reserve capacity fee regardless of whether they are dispatched or not. When the reserve capacity is dispatched and loaded, the bidder will also receive a charge for electricity. This mechanism is conducive to improving the enthusiasm of the unit to provide backup auxiliary services, thereby providing good conditions for the development of new energy.

我国大部分辅助服务的调用按照“按需调度”的原则，由电力调度机构根据发电机组特性和电网情况，安排发电机组承担辅助服务。Most of the ancillary services in my country are called according to the principle of "on-demand dispatching", and the power dispatching organization arranges the generator sets to undertake the auxiliary services according to the characteristics of the generator sets and the situation of the power grid.

随着风电光伏等新能源的快速发展，其并网对系统辅助服务的需求日益增加，即需要电力系统其他类型机组提供更多的辅助服务，若仍旧执行我国现行的辅助服务管理机制，现有补偿规则没有考虑风电等类似新能源引发的辅助服务需求增量问题，并且，备用辅助服务费用在全网发电电源间分摊，若按现有规则分摊实质上相当于由其它类型机组多承担了分摊费用，侵蚀了其它类型的机组的合理利益，以至于传统机组不愿意为风电承担备用而导致弃风严重。With the rapid development of new energy sources such as wind power and photovoltaics, the demand for system auxiliary services is increasing day by day, that is, other types of units in the power system are required to provide more auxiliary services. If the current auxiliary service management mechanism in my country is still implemented, the existing The compensation rules do not take into account the increase in demand for ancillary services caused by wind power and other similar new energy sources, and the cost of backup ancillary services is shared between the power generation sources of the entire network. The cost has eroded the reasonable interests of other types of units, so that traditional units are unwilling to bear backup for wind power, resulting in severe wind curtailment.

发明内容Contents of the invention

为了克服上述现有技术的不足，本发明提供一种促进新能源并网消纳的备用及调峰辅助服务成本分摊方法，通过建立考虑新能源并网后引起额外服务服务成本的消纳模型，分析不同情景下新能源引起的备用及调峰辅助服务成本，提出新能源并网后辅助服务成本的分摊方案；可以有效提高传统电源提供辅助服务积极性并保证提供者的利益，减少弃风/弃光，保证系统经济运行。In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a backup and peak-shaving auxiliary service cost allocation method that promotes new energy grid-connected consumption. By establishing a consumption model that considers the additional service cost caused by new energy grid-connected, Analyze the backup and peak-shaving auxiliary service costs caused by new energy under different scenarios, and propose a cost-sharing plan for auxiliary services after new energy is connected to the grid; it can effectively improve the enthusiasm of traditional power sources to provide auxiliary services and ensure the interests of providers, and reduce wind curtailment/discarding Light, to ensure the economical operation of the system.

为了实现上述发明目的，本发明采取如下技术方案：In order to realize the above-mentioned purpose of the invention, the present invention takes the following technical solutions:

本发明提供一种促进新能源并网消纳的备用及调峰辅助服务成本分摊方法，所述方法包括以下步骤：The present invention provides a backup and peak-shaving auxiliary service cost allocation method that promotes grid-connected consumption of new energy. The method includes the following steps:

步骤1：确定基于生产模拟的新能源并网消纳模型的目标函数和约束条件；Step 1: Determine the objective function and constraints of the new energy grid-connected consumption model based on production simulation;

步骤2：计算新能源并网后的备用辅助服务成本；Step 2: Calculate the backup ancillary service cost after new energy is connected to the grid;

步骤3：计算新能源风电机组收益；Step 3: Calculate the income of new energy wind turbines;

步骤4：计算备用辅助服务分摊成本；Step 4: Calculating the allocated cost of backup ancillary services;

步骤5：计算风电接入导致的调峰辅助服务分摊成本。Step 5: Calculate the cost sharing of peak shaving auxiliary services caused by wind power access.

所述步骤1中，基于生产模拟的新能源并网消纳模型的目标函数表示为：In the step 1, the objective function of the new energy grid-connected consumption model based on production simulation is expressed as:

$\begin{matrix} VOBJ VOBJ = = min min ((ΣΣ ΣΣ {c c}^{output output} ((p p)) + + Σ Σ {c c}^{trans trans} (({p p}_{trans trans})) + + Σ Σ {c c}^{investment investment} (({p p}_{investment investment})) + + \\ \underset{i i}{Σ Σ} {Cost cost}_{i i} \cdot &Center Dot; (({R R}_{t t}^{up up . . i i} - - {R R}_{t t}^{dn dn . . i i})) \cdot &Center Dot; {Prob Prob}^{i i} + + \underset{i i}{Σ Σ} {Cost cost}_{i i} \cdot &Center Dot; (({P P}_{t t}^{up up . . i i} - - {P P}_{t t}^{dn dn . . i i})) \end{matrix} - - - - - - ((11))$

其中，VOBJ为系统总成本；ΣΣc^output(p)为发电成本，p为发电容量；Σc^trans(p_trans)为传输成本，p_trans为传输容量；Σc^investment(p_investment)为新增投资成本，p_investment为新增投资容量；为备用成本，Probⁱ为第i台常规机组的可提供备用的概率，Cost_i为对应于Probⁱ的提供备用成本，和分别为第i台常规机组t时刻的提供的向上和向下的备用容量；为调峰成本，Cost_i为机组i提供调峰时单位成本，为第i台常规机组t时刻的向上调峰量，为第i台常规机组t时刻的向下调峰量。Among them, VOBJ is the total cost of the system; ΣΣc ^output (p) is the power generation cost, p is the power generation capacity; Σc ^trans (p _trans ) is the transmission cost, p _trans is the transmission capacity; Σc ^investment (p _investment ) is the new investment cost, p _investment is the new investment capacity; is the backup cost, Prob ⁱ is the probability that the i-th conventional unit can provide backup, Cost _i is the backup cost corresponding to Prob ⁱ , and are respectively the upward and downward reserve capacity provided by the i-th conventional unit at time t; For peak shaving cost, Cost _i provides unit cost for unit i during peak shaving, is the upward peak adjustment amount of the i-th conventional unit at time t, is the down-peaking amount of the i-th conventional unit at time t.

基于生产模拟的新能源并网消纳模型目标函数对应的约束条件包括等式约束和不等式约束；所述等式约束包括电力系统内电平衡约束和电力系统内热平衡约束，不等式约束包括机组组合特性约束、备用约束和调峰约束。The constraints corresponding to the objective function of the new energy grid-connected consumption model based on production simulation include equality constraints and inequality constraints; the equality constraints include power balance constraints in the power system and heat balance constraints in the power system, and the inequality constraints include unit combination characteristics constraints, backup constraints, and peak shaving constraints.

所述电力系统内电平衡约束表示为：The electrical balance constraint in the power system is expressed as:

$\underset{{i i &Element; &Element; I I}_{r r}}{Σ Σ} {P P}_{i i,, t t} + + \underset{r r &Element; &Element; R R}{Σ Σ} ((((11 - - {L L}_{loss loss})) \cdot &Center Dot; {P P}_{trans trans})) = = {P P}_{r r,, t t}^{load load} + + \underset{{i i &Element; &Element; I I}_{elecsto elecsto}}{Σ Σ} {P P}_{i i,, t t}^{stoload stoload} &ForAll; &ForAll; t t &Element; &Element; T T,, r r &Element; &Element; R R - - - - - - ((22))$

其中，式中等号左侧为区域r内所有常规机组发出功率和减去损耗后与外区域的交换功率，右侧为区域r内的负荷和电储能装置作为负荷的功率，且P_i，t为第i台常规机组在t时刻的发电功率，L_loss为线路损耗，P_trans为传输线功率，为区域r内t时刻负荷功率，为电储能装置作为负荷的功率，I_r为所有参与调度机组，I_elecsto为所有电储能装置作为负荷的数量，R为电平衡区，T为整个计算时段；Among them, the left side of the equal sign in the formula is the output power of all conventional units in the area r and the exchange power with the outer area after deducting the loss, the right side is the load in the area r and the power of the electric energy storage device as the load, and P _{i, t} is the generating power of the i-th conventional unit at time t, L _loss is the line loss, P _trans is the transmission line power, is the load power at time t in region r, is the power of the electric energy storage device as the load, I _r is all participating dispatching units, I _elecsto is the quantity of all electric energy storage devices as the load, R is the electric balance area, and T is the entire calculation period;

所述电力系统内热平衡约束表示为：The heat balance constraint in the power system is expressed as:

$\underset{{i i &Element; &Element; I I}_{a a}}{Σ Σ} {H h}_{i i,, t t} = = {H h}_{a a,, t t}^{load load} + + \underset{{i i &Element; &Element; I I}_{heat the heat__sto stow}}{Σ Σ} {H h}_{i i,, t t}^{sto stow__load load} &ForAll; &ForAll; t t &Element; &Element; T T,, a a &Element; &Element; A A - - - - - - ((33))$

其中，式中左侧为地区a内所有热能出力的和，右侧为地区a内的热负荷与热储能装置作为负荷的功率，H_i,t为第i台常规机组在t时刻的热功率，为地区a内t时刻热负荷功率，为地区a内t时刻热储能装置功率，I_a为所有供热机组数目，I_{heat_sto}为地区a内热储能装置作为热负荷的数量，T为整个计算时段，A为热平衡区。Among them, the left side of the formula is the sum of all thermal energy output in area a, the right side is the heat load in area a and the power of thermal energy storage device as load, H _i,t is the heat output of the i-th conventional unit at time t power, is the thermal load power at time t in area a, is the power of thermal energy storage device in region a at time t, I _a is the number of all heating units, I _{heat_sto} is the number of thermal energy storage devices in region a as heat load, T is the entire calculation period, and A is the heat balance area.

所述机组组合特性约束包括机组发电功率约束、机组爬坡率约束和机组启停时间约束；The unit combination characteristic constraints include unit generating power constraints, unit ramp rate constraints and unit start-stop time constraints;

(1)机组发电功率约束表示为：(1) The generation power constraint of the unit is expressed as:

${P P}_{i i,, t t}^{min min} \leq \leq {P P}_{i i,, t t} \leq \leq {P P}_{i i,, t t}^{max max} - - - - - - ((44))$

其中，P_i,t为第i台发电机组在t时刻的发电功率，和分别为第i台发电机组在t时刻的发电功率上下限；Among them, P _i,t is the generating power of the i-th generator set at time t, and Respectively, the upper and lower limits of the generated power of the i-th generator set at time t;

(2)机组爬坡率约束表示为：(2) The unit ramp rate constraint is expressed as:

$Δ Δ {P P}_{i i,, t t} \leq \leq Δ Δ {P P}_{i i,, t t}^{max max} - - - - - - ((55))$

其中，ΔP_i,t为第i台发电机组在t时刻的发电功率变化值，为第i台发电机组在t时刻的发电功率变化最大值；Among them, ΔP _i,t is the power generation change value of the i-th generator set at time t, is the maximum value of the generated power change of the i-th generator set at time t;

(3)机组启停时间约束表示为：(3) The start-stop time constraint of the unit is expressed as:

T^on≥T^minon,T^off≥T^minoff (6)T ^on ≥ T ^minon , T ^off ≥ T ^minoff (6)

其中，T^on和T^off分别为发电机组启动和停止时间，T^minon和T^minoff分别为发电机组启动和停止时间下限值。Among them, T ^on and T ^off are the starting and stopping time of the generating set respectively, and T ^minon and T ^minoff are the lower limit values of the starting and stopping time of the generating set respectively.

所述备用约束包括向上备用电量约束和向下备用电量约束，分别表示为：The reserve constraints include an upward reserve power constraint and a downward reserve power constraint, respectively expressed as:

$Cap Cap {P P}_{a a,, i i} \cdot \cdot VP VP {on on}_{a a,, i i} - - {VP VP}_{a a,, i i} &GreaterEqual; &Greater Equal; \underset{i i}{Σ Σ} {VR VR}_{a a,, i i}^{up up} - - - - - - ((77))$

${VP VP}_{a a,, i i} - - CapP CapP {min min}_{a a,, i i} \cdot \cdot VPo VPo {n no}_{a a,, i i} &GreaterEqual; &Greater Equal; \underset{i i}{Σ Σ} {VR VR}_{a a,, i i}^{dn dn} - - - - - - ((88))$

其中，CapP_a,i分别为a区域中第i台发电机组的机组容量，VPon_a,i表示a区域中第i台发电机组是否在线，VP_a,i为a区域中第i台发电机组出力，为a区域中第i台发电机组可提供的向上调节量，CapPmin_a,i为a区域中第i台发电机组的最小出力，为a区域中第i台发电机组可提供的向下调节量。Among them, CapP _a,i is the unit capacity of the i-th generator set in area a, VPon _a,i indicates whether the i-th generator set in area a is online, VP _a,i is the output of the i-th generator set in area a , is the upward adjustment amount that the i-th generator set in area a can provide, CapPmin _a,i is the minimum output of the i-th generator set in area a, is the downward adjustment amount that the i-th generator set in area a can provide.

所述调峰约束包括向上调峰容量约束和向下调峰容量约束；The peak shaving constraints include an upward peak shaving capacity constraint and a downward peak shaving capacity constraint;

向上调峰容量约束表示为：The upward peak shaving capacity constraint is expressed as:

${VP VP}_{at at}^{up up . . i i} \leq \leq {CapP CapP}_{at at} - - - - - - ((99))$

向下调峰容量约束表示为：The downward peak shaving capacity constraint is expressed as:

$min min {CapP CapP}_{at at} \leq \leq {VP VP}_{at at}^{dn dn,, i i} \leq \leq {CapP CapP}_{at at} - - - - - - ((1010))$

其中，为向上调峰容量；CapP_at为机组额定容量；minCapP_at为机组最小技术出力；为向下调峰容量。in, is the upward peaking capacity; CapP _at is the rated capacity of the unit; minCapP _at is the minimum technical output of the unit; is the downward peaking capacity.

所述步骤2中，新能源并网后的备用辅助服务成本用表示，有：In the step 2, the backup ancillary service cost after the new energy is connected to the grid is used Indicates that there are:

${Cost cost}_{new new}^{reserve reserve} = = (({C C}_{current current} + + {Cost cost}_{reserve reserve__wind wind})) * * 110110 % % - - - - - - ((1111))$

其中，C_current为现有机制下补偿备用辅助服务成本，Cost_{reserve_wind}为新能源并网后引起额外的辅助服务成本，表示为：Among them, C _current is the compensation for backup ancillary service costs under the existing mechanism, and Cost _{reserve_wind} is the additional ancillary service costs caused by the grid connection of new energy, expressed as:

Cost_{reserve_wind}＝Cost_{wind_forecasting_error}-Cost_{perfect_wind} (12)Cost _{reserve_wind} = Cost _{wind_forecasting_error} - Cost _{perfect_wind} (12)

其中，Cost_{wind_forecasting_error}为新能源预报误差为20％的系统备用成本，Cost_{perfect_wind}为新能源预报误差为0时的系统备用成本，分别表示为：Among them, Cost _{wind_forecasting_error} is the system backup cost when the new energy forecast error is 20%, and Cost _{perfect_wind} is the system backup cost when the new energy forecast error is 0, respectively expressed as:

${Cost cost}_{wind wind__forecasting forecasting__error error} = = \underset{i i}{Σ Σ} {Cost cost}_{i i} \cdot &Center Dot; (({R R}_{t t__winderror wind error}^{up up . . i i} - - {R R}_{t t__winderror wind error}^{dn dn . . i i})) \cdot &Center Dot; {Prob Prob}^{i i} - - - - - - ((1313))$

${Cost cost}_{perfect perfect__wind wind} = = \underset{i i}{Σ Σ} {Cost cost}_{i i} \cdot &Center Dot; (({R R}_{t t__perfect perfect__wind wind}^{up up . . i i} - - {R R}_{t t__perfect perfect__wind wind}^{dn dn . . i i})) \cdot &Center Dot; {Prob Prob}^{i i} - - - - - - ((1414))$

其中，Probⁱ为第i台常规机组的可提供备用的概率，Cost_i为对应于Probⁱ的提供备用成本，和分别为第i台常规机组t时刻在风电预报误差为20％时提供的向上和向下的备用容量，和分别为第i台常规机组t时刻在风电预报误差为0时提供的向上和向下的备用容量。Among them, Prob ⁱ is the probability that the i-th conventional unit can provide backup, Cost _i is the cost of providing backup corresponding to Prob ⁱ , and are respectively the upward and downward reserve capacity provided by the i-th conventional unit at time t when the wind power forecast error is 20%, and are respectively the upward and downward reserve capacity provided by the i-th conventional unit at time t when the wind power forecast error is 0.

所述步骤3中，新能源风电机组收益用B_wind表示，有：In the step 3, the income of the new energy wind turbine is represented by B _wind , which is:

B_wind＝C_{curtail_Reduced}*P_wind (15)B _wind = C _{curtail_Reduced} *P _wind (15)

其中，C_{curtail_Reduced}为系统提供备用后减少的弃风电量，P_wind为风电价格。Among them, C _{curtail_Reduced} is the curtailed wind power reduced after the system provides backup, and P _wind is the wind power price.

所述步骤4中，备用辅助服务分摊成本用Wind_propotion表示，有：In the step 4, the allocated cost of the standby auxiliary service is represented by Wind _propotion , which is:

Wind_propotion＝B_wind-Wind_taken (16)Wind _propotion = B _wind -Wind _taken (16)

其中，Wind_taken为风电承担的成本，为比较不同的备用辅助服务补偿机制，分为以下两种情况：Among them, Wind _Taken is the cost borne by wind power. In order to compare different backup ancillary service compensation mechanisms, it is divided into the following two situations:

(a)由风电企业单独承担时，风电承担的成本表示为：(a) When borne by the wind power enterprise alone, the cost borne by the wind power is expressed as:

Wind_taken＝Wind′_taken＝Cost_{reserve_wind} (17)Wind _taken = Wind' _taken = Cost _{reserve_wind} (17)

其中，Wind′_taken为风电企业单独承担的成本，Cost_{reserve_wind}为新能源并网后引起额外的辅助服务成本；Among them, _Wind′taken is the cost borne by the wind power enterprise alone, and Cost _{reserve_wind} is the additional auxiliary service cost caused by the grid connection of new energy;

(b)由风电企业和用户按照预报误差比例共同承担时，风电承担的成本表示为：(b) When the wind power enterprise and the user share the cost according to the proportion of the forecast error, the cost borne by the wind power is expressed as:

Wind_taken＝Wind″_taken+Load_taken (18)Wind _taken ＝Wind″ _taken +Load _taken (18)

其中，Wind″_taken和Load_taken分别为风电企业承担的成本和用户承担的备用成本，分别表示为：Among them, Wind″ _taken and _Loadtaken are the cost borne by the wind power enterprise and the spare cost borne by the user respectively, expressed as:

Wind″_taken＝Cost_{reserve_wind}*(σ_wind/(σ_wind+σ_load)) (19)Wind″ _taken = Cost _{reserve_wind} *(σ _wind /(σ _wind +σ _load )) (19)

Load_taken＝Cost_{reserve_wind}*(σ_load/(σ_wind+σ_load)) (20)Load _taken ＝Cost _{reserve_wind} *(σ _load /(σ _wind +σ _load )) (20)

其中，σ_wind风电预报误差，σ_load为负荷预报误差。Among them, σ _wind wind power forecast error, σ _load is load forecast error.

所述步骤5中，风电接入导致的调峰辅助服务分摊成本采用有风电接入与无风电接入导致的调峰辅助服务成本的差值进行计算，有：In the step 5, the peak shaving auxiliary service apportionment cost caused by wind power access is calculated using the difference between the peak shaving auxiliary service costs caused by wind power access and no wind power access, as follows:

${Cost cost}_{peak peak__re re__wind wind} = = {Cost cost}_{peak peak}^{wind wind} - - {Cost cost}_{peak peak}^{no no__wind wind} - - - - - - ((21 twenty one))$

其中，Cost_{peak_re_wind}为风电接入导致的调峰辅助服务分摊成本；为有风电接入导致的调峰辅助服务成本，无风电接入导致的调峰辅助服务成本，分别表示为：Among them, Cost _{peak_re_wind} is the cost sharing of peak shaving auxiliary services caused by wind power access; For the peak shaving auxiliary service cost caused by wind power access, The peak shaving auxiliary service cost caused by no wind power access is expressed as:

${Cost cost}_{peak peak}^{wind wind} = = Σ Σ {Cost cost}_{i i} \cdot &Center Dot; (({P P}_{t t__wind wind}^{up up . . i i} - - {P P}_{t t__wind wind}^{dn dn . . i i})) - - - - - - ((22 twenty two))$

${Cost cost}_{peak peak}^{no no__wind wind} = = Σ Σ {Cost cost}_{i i} \cdot \cdot (({P P}_{t t__no no__wind wind}^{up up . . i i} - - {P P}_{t t__no no__wind wind}^{dn dn . . i i})) - - - - - - ((23 twenty three))$

其中，和分别表示有风电接入时的第i台常规机组t时刻的向上调峰量和向下调峰量；和分别表示在没有风电接入时的第i台常规机组t时刻的向上调峰量和向下调峰量。in, and Respectively represent the upward peak adjustment amount and downward peak adjustment amount of the i-th conventional unit at time t when wind power is connected; and Respectively represent the upward peak regulation and downward peak regulation of the i-th conventional unit at time t when there is no wind power access.

与现有技术相比，本发明的有益效果在于：Compared with prior art, the beneficial effect of the present invention is:

本发明提供一种促进新能源并网消纳的备用及调峰辅助服务成本分摊方法，通过建立考虑新能源并网后引起额外服务服务成本的消纳模型，分析不同情景下新能源引起的备用及调峰辅助服务成本，提出新能源并网后辅助服务成本的分摊方案；可以有效提高传统电源提供辅助服务积极性并保证提供者的利益，减少弃风/弃光，保证系统经济运行。The invention provides a backup and peak-shaving auxiliary service cost allocation method that promotes new energy grid-connected consumption. By establishing a consumption model that considers the additional service cost caused by new energy grid-connected, the backup caused by new energy under different scenarios is analyzed. And peak shaving auxiliary service cost, put forward the apportionment scheme of auxiliary service cost after new energy is connected to the grid; it can effectively improve the enthusiasm of traditional power supply to provide auxiliary service and ensure the interests of providers, reduce curtailment of wind/light, and ensure the economic operation of the system.

附图说明Description of drawings

图1是促进新能源并网消纳的备用及调峰辅助服务成本分摊方法流程图。Figure 1 is a flow chart of the cost allocation method for backup and peak-shaving auxiliary services that promote new energy grid-connected consumption.

具体实施方式Detailed ways

下面结合附图对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.

如图1，本发明提供一种促进新能源并网消纳的备用及调峰辅助服务成本分摊方法，所述方法包括以下步骤：As shown in Figure 1, the present invention provides a backup and peak-shaving auxiliary service cost allocation method that promotes grid-connected consumption of new energy, and the method includes the following steps:

$\begin{matrix} VOBJ VOBJ = = min min ((ΣΣ ΣΣ {c c}^{output output} ((p p)) + + Σ Σ {c c}^{trans trans} (({p p}_{trans trans})) + + Σ Σ {c c}^{investment investment} (({p p}_{investment investment})) + + \\ \underset{i i}{Σ Σ} {Cost cost}_{i i} \cdot \cdot (({R R}_{t t}^{up up . . i i} - - {R R}_{t t}^{dn dn . . i i})) \cdot \cdot {Prob Prob}^{i i} + + \underset{i i}{Σ Σ} {Cost cost}_{i i} \cdot &Center Dot; (({P P}_{t t}^{up up . . i i} - - {P P}_{t t}^{dn dn . . i i})) \end{matrix} - - - - - - ((11))$

基于生产模拟的新能源并网消纳模型目标函数对应的约束条件包括等式约束和不等式约束；所述等式约束包括电力系统内电平衡约束和电力系统内热平衡约束，不等式约束包括机组组合特性约束、备用约束和调峰约束。The constraints corresponding to the objective function of the new energy grid-connected consumption model based on production simulation include equality constraints and inequality constraints; the equality constraints include the power balance constraints in the power system and the heat balance constraints in the power system, and the inequality constraints include unit combination characteristics constraints, backup constraints, and peak shaving constraints.

其中，式中等号左侧为区域r内所有常规机组发出功率和减去损耗后与外区域的交换功率，右侧为区域r内的负荷和电储能装置作为负荷的功率，且P_i,t为第i台常规机组在t时刻的发电功率，L_loss为线路损耗，P_trans为传输线功率，为区域r内t时刻负荷功率，为电储能装置作为负荷的功率，I_r为所有参与调度机组，I_elecsto为所有电储能装置作为负荷的数量，R为电平衡区，T为整个计算时段；Among them, the left side of the equal sign in the formula is the output power of all conventional units in the area r and the exchange power with the outer area after deducting losses, the right side is the load in the area r and the power of the electric energy storage device as the load, and P _{i, t} is the generating power of the i-th conventional unit at time t, L _loss is the line loss, P _trans is the transmission line power, is the load power at time t in region r, is the power of the electric energy storage device as the load, I _r is all participating dispatching units, I _elecsto is the quantity of all electric energy storage devices as the load, R is the electric balance area, and T is the entire calculation period;

火电机组调节出力的速度比较慢，在模型中对机组的爬坡率和下降率进行了限制，更具体的反应系统接纳风电的适应性，机组前后两个时刻的功率变化小于设定的变化最大值。The thermal power unit adjusts the output at a relatively slow speed. The ramp rate and descent rate of the unit are limited in the model. The more specific response system accepts the adaptability of wind power. The power change at the two moments before and after the unit is less than the maximum change set value.

发电机组有启动后最低运行时间和关停后最低关闭时间，即机组一旦启动则机组运行的时间要大于等于最低运行时间，机组一旦关闭则机组关闭的时间要大于等于最低关闭时间。The generator set has a minimum running time after startup and a minimum closing time after shutting down, that is, once the unit is started, the unit’s running time must be greater than or equal to the minimum running time, and once the unit is closed, the unit’s closing time must be greater than or equal to the minimum closing time.

$Cap cap {P P}_{a a,, i i} \cdot &Center Dot; VP VP {on on}_{a a,, i i} - - {VP VP}_{a a,, i i} &GreaterEqual; &Greater Equal; \underset{i i}{Σ Σ} {VR VR}_{a a,, i i}^{up up} - - - - - - ((77))$

${VP VP}_{a a,, i i} - - CapP CapP {min min}_{a a,, i i} \cdot &Center Dot; VPo VPo {n no}_{a a,, i i} &GreaterEqual; &Greater Equal; \underset{i i}{Σ Σ} {VR VR}_{a a,, i i}^{dn dn} - - - - - - ((88))$

通过不同情景下成本分析，可以得到新能源并网后系统新增的辅助服务成本，从而可以给出新能源并网后适合的辅助服务补偿数额，建立新的辅助服务成本分摊。Through the cost analysis under different scenarios, the new auxiliary service cost of the system after the new energy grid connection can be obtained, so that the appropriate auxiliary service compensation amount after the new energy grid connection can be given, and a new auxiliary service cost allocation can be established.

备用辅助服务主要是由于新能源出力预测偏差所带来的，因此新能源接入导致的备用辅助服务应该采用无新能源接入预测偏差与新能源接入综合预测偏差所导致的备用辅助服务的差值进行计算。The standby ancillary service is mainly caused by the forecast deviation of new energy output, so the standby ancillary service caused by the access of new energy should adopt the method of standby ancillary service without the forecast deviation of new energy access and the comprehensive forecast deviation of new energy access. Calculate the difference.

${Cost cost}_{perfect perfect__wind wind} = = \underset{i i}{Σ Σ} {Cost cost}_{i i} \cdot \cdot (({R R}_{t t__perfect perfect__wind wind}^{up up . . i i} - - {R R}_{t t__perfect perfect__wind wind}^{dn dn . . i i})) \cdot &Center Dot; {Prob Prob}^{i i} - - - - - - ((1414))$

经过计算发现，如果单纯由风电场承担其引发的辅助服务成本有时过于困难，不足部分可考虑由用户和风电场按照预报误差大小按比例承担，用户承担的部分备用辅助服务成本费用在实际运行中可从发电机组收取，辅助服务费用可在电费中体现。After calculation, it is found that if it is sometimes too difficult for the wind farm to bear the ancillary service costs caused by it, the insufficient part can be considered to be borne by the user and the wind farm in proportion to the forecast error, and part of the backup ancillary service cost borne by the user is in actual operation It can be collected from the generator set, and the ancillary service fee can be reflected in the electricity bill.

国外发达国家近30年经济发展迅速，核电比重一度增长较快，火电调峰问题早在60年代初就提到议事日程。他们不仅对原设计为基本负荷的机组进行适应调峰运行的改造，而且还研究设计了一批大容量中间负荷机组，尤其西欧和日本，对新机组的机动性很重视，新设计的大机组多采用螺旋管圈水冷壁、薄壁缸、窄法兰或套箍结构。焊接转子和容易较大的旁路系统。这些机组为500MW以上，甚至1000MW的超临街机组也都设计成可变压与两班制运行，早年美国对此重视不够，近年美国电力研究协会组织了好几个设备制造厂、电力公司和顾问工程公司选定了四台实际基荷机组进行示范性的改造、试验和研究，最后据此写出了一份通用性的导则。Over the past 30 years, developed countries in foreign countries have experienced rapid economic development, and the proportion of nuclear power has increased rapidly. The issue of thermal power peak regulation has been on the agenda as early as the early 1960s. They not only modified the units originally designed as base loads to adapt to peak-shaving operation, but also researched and designed a batch of large-capacity intermediate-load units, especially in Western Europe and Japan, which attached great importance to the mobility of new units, and the newly designed large units Most of them use spiral pipe ring water cooling wall, thin wall cylinder, narrow flange or hoop structure. Welded rotors and easy larger bypass systems. These units are more than 500MW, and even 1000MW super street units are designed to operate with variable voltage and two shifts. In the early years, the United States did not pay enough attention to this. In recent years, the American Electric Power Research Association has organized several equipment manufacturers, power companies and consulting projects. The company selected four actual base load units for demonstration modification, test and research, and finally wrote a general guideline based on this.

《并网发电厂辅助服务管理暂行办法》将调峰辅助服务分为无偿调峰和有偿调峰2类：无偿调峰是机组应达到的基本调峰能力，不进行补偿；基本能力之上的为有偿调峰，采用事先确定补偿标准、定额补偿的方案。在有偿调峰与无偿调峰的划分标准上各区域各不相同。比如：华北地区要求非供热火电机组的基本调峰能力应达到额定容量的50％；华中地区则要求300MW及以上机组达到50％，300MW以下达到45％。各地标准的确定大都通过调研、座谈等定性方法确定。The "Interim Measures for the Management of Auxiliary Services of Grid-connected Power Plants" divides peak shaving auxiliary services into two categories: free peak shaving and paid peak shaving: free peak shaving is the basic peak shaving capability that the unit should achieve, without compensation; For paid peak shaving, the compensation standard and fixed compensation plan are adopted in advance. Different regions have different standards for the division of paid peak shaving and unpaid peak shaving. For example: North China requires that the basic peak-shaving capacity of non-heating thermal power units should reach 50% of the rated capacity; Central China requires 300MW and above units to reach 50%, and less than 300MW to reach 45%. The determination of standards in various places is mostly determined through qualitative methods such as surveys and discussions.

由于风电并网后大多数情况下会增大系统的峰谷差，给系统调峰带来困难，而现有的辅助服务调峰补偿机制，辅助服务费用在全网传统电源间分摊，而且也没有考虑风电引发的辅助服务需求增量问题，因此，已不适应目前越来越多风电并网情况。步骤5在分析计算风电并网后调峰成本变化的基础上，给出了应对大规模风电并网的调峰辅助服务建议。In most cases, after the wind power is connected to the grid, the peak-to-valley difference of the system will increase, which will bring difficulties to the system peak regulation. However, the existing ancillary service peak regulation compensation mechanism, the ancillary service fee is shared among the traditional power sources of the entire network, and it is also It does not take into account the increase in demand for ancillary services caused by wind power, so it is no longer suitable for the current situation of more and more wind power grid-connected. In step 5, based on the analysis and calculation of the peak shaving cost changes after wind power grid-connected, suggestions for peak-shaving auxiliary services for large-scale wind power grid-connected are given.

所述步骤5中，风电接入导致的调峰辅助服务分摊成本采用有风电接入与无风电接入导致的调峰辅助服务成本的差值进行计算，有：In the step 5, the peak-shaving auxiliary service apportionment cost caused by wind power access is calculated using the difference between the peak-shaving auxiliary service costs caused by wind power access and no wind power access, as follows:

${Cost cost}_{peak peak}^{no no__wind wind} = = Σ Σ {Cost cost}_{i i} \cdot &Center Dot; (({P P}_{t t__no no__wind wind}^{up up . . i i} - - {P P}_{t t__no no__wind wind}^{dn dn . . i i})) - - - - - - ((23 twenty three))$

下面主要分析了火电调峰机组进行深调峰时付出的成本。The following mainly analyzes the cost paid by thermal power peaking units for deep peaking.

由于深度调峰发电电源付出的代价为，发电电源深调峰时付出的经济成本以及由于深调峰减少的发电量而减少的收益，即：The price paid for deep peak-shaving power generation is the economic cost of deep peak-shaving power generation and the reduced revenue due to the reduced power generation due to deep peak-shaving, namely:

P_{Peak_re}＝P_{caol_deep}+P_caol+G_reduced (24)P _{Peak_re} = P _{caol_deep} + P _caol + G _reduced (24)

P_{caol_deep}＝(C_{coal_deep}-C_{coal_regular})*G_{deep_re}*C_caol (25)P _{caol_deep} ＝(C _{coal_deep} -C _{coal_regular} )*G _{deep_re} *C _caol (25)

其中，P_{caol_deep}发电电源深调峰时付出的经济成本，P_caol为火电价格，G_reduced为发电电源由于深调峰而减少的发电量，C_{coal_deep}为深调峰时对应的煤耗率，C_{coal_regular}为发电调峰时对应的煤耗率，G_{deep_re}为电量，C_caol为煤价。Among them, P _{caol_deep} is the economic cost of deep peak regulation of power generation, P _caol is the price of thermal power, G _reduced is the reduced power generation of power generation due to deep peak regulation, C _{coal_deep} is the corresponding coal consumption rate during deep peak regulation, C _{coal_regular} is the coal consumption rate corresponding to power generation peak regulation, G _{deep_re} is the electricity, and C _caol is the coal price.

风电收益为由于系统提供了辅助服务减少的弃风电量乘以风电上网电价，风电收益：The wind power income is the multiplication of the abandoned wind power reduced by the auxiliary services provided by the system multiplied by the wind power on-grid electricity price, and the wind power income is:

B_wind＝C_{curtail_Reduced}*P_wind (26)B _wind = C _{curtail_Reduced} *P _wind (26)

由以上公式进行计算，单位风电并网后引起的调峰成本近150/MWh，因此，风电并网后为保证传统电源的利益，并提高传统电源提供调峰辅助服务的积极性，至少在现有补偿价格上增加风电并网后引起的调峰成本，即至少增加150/MWh。Calculated by the above formula, the peak-shaving cost caused by unit wind power grid-connected is nearly 150/MWh. Therefore, after wind power grid-connected, in order to ensure the interests of traditional power sources and increase the enthusiasm of traditional power sources for peak-shaving auxiliary services, at least in the existing The compensation price will increase the peaking cost caused by wind power grid connection, that is, at least 150/MWh increase.

现行规则规定深调峰补偿价格为5000元/万千瓦时。按照补偿成本及适当受益的原则，对于深度调峰的发电机组补偿新增的成本为200元/MWh，即考虑风电并网引起额外的调峰成本后，对深度调峰的补偿价格建议为7000元/万千瓦时。The current rules stipulate that the compensation price for deep peak regulation is 5,000 yuan/10,000 kWh. According to the principle of compensation costs and appropriate benefits, the additional cost of compensation for deep peak-shaving generating units is 200 yuan/MWh, that is, after considering the additional peak-shaving costs caused by wind power grid connection, the compensation price for deep peak-shaving is recommended to be 7,000 yuan Yuan/10,000 kWh.

风电接入电网导致的调峰成本由风电出力波动引起，主要是客观原因，目前可由消费者来承担比较合适，实际运行中可从所有发电机组收取，辅助服务费用可在电费中体现。The peak shaving cost caused by wind power connected to the grid is mainly caused by the fluctuation of wind power output, which is mainly due to objective reasons. At present, it is more appropriate for consumers to bear it. In actual operation, it can be collected from all generating units, and the ancillary service fee can be reflected in the electricity bill.

经过以上测算发现：After the above calculations, it was found that:

按照上网电量方式分摊备用辅助服务成本的话，会导致风电承担的辅助服务成本小于其引发的程度，因此要求风电加入现行辅助服务成本分摊模式就有失公平，需加以改进。If the cost of backup ancillary services is allocated according to the way of grid-connected electricity, the ancillary service costs borne by wind power will be less than the level caused by it. Therefore, it is unfair to require wind power to join the current ancillary service cost allocation model and needs to be improved.

风电接入电网导致的备用成本主要由风电预报误差引起，主要是主观因素，因此，这部分成本按照风电和负荷的预报误差比例分摊比较合适；风电接入电网导致的调峰成本由风电出力波动引起，主要是客观原因，比较合理目前可由消费者来承担比较合适(在远期，可由市场进行补偿)，实际运行中可从所有发电机组收取，辅助服务费用可在电费中体现。The backup cost caused by wind power connected to the grid is mainly caused by wind power forecast errors, which are mainly subjective factors. Therefore, it is more appropriate to share this part of the cost according to the proportion of wind power and load forecast errors; the peak shaving cost caused by wind power connected to the grid is determined by wind power output Caused, mainly due to objective reasons, it is more reasonable to be borne by consumers at present (in the long run, it can be compensated by the market). In actual operation, it can be collected from all generator sets, and the ancillary service fee can be reflected in the electricity bill.

表1为风电并网引起的备用成本及风电收益，表2为风电并网引起的单位容量备用成本，表3为按照原来分摊机制各类电源分摊备用成本数额结果，表4为风电并网引起的备用成本不同分摊结果，表5为不同火电最低出力情景下各类机组发电量，表6为风电并网后不同调峰深度发电侧成本分析结果。Table 1 shows the backup cost and wind power income caused by wind power grid connection. Table 2 shows the backup cost per unit capacity caused by wind power grid connection. Table 5 shows the power generation of various units under different thermal power minimum output scenarios, and Table 6 shows the cost analysis results of the power generation side at different peak shaving depths after wind power is connected to the grid.

表1Table 1

不同情景different scenarios 风电容量(MW)Wind power capacity (MW) 系统运行费用(百万元)System operating costs (millions of dollars) 风电收益(MWh)Wind Power Revenue (MWh) 备用成本(百万元)Standby cost (million yuan) 风电并网前Before wind power grid connection 00 8.958.95 00 1.21.2 风电并网后After wind power grid connection 25002500 8.858.85 10001000 1.81.8

表2Table 2

表3table 3

火电Thermal power 风电wind power 水电hydropower 发电量(MWh)Power generation (MWh) 12000001200000 6000060000 6000060000 承担备用分摊(百万元)Bearing standby allocation (millions of yuan) 1.61.6 0.10.1 0.10.1

表4Table 4

不同风电并网容量Different wind power grid-connected capacity 由风电企业承担borne by wind power companies 由风电企业和用户共同承担Shared by wind power companies and users 承担额度(百万)Commitment amount (millions) 0.60.6 0.4/0.20.4/0.2 因减少弃风收益(百万)Income from reduced wind curtailment (millions) 0.60.6 0.60.6 风电整个收益(百万)Total wind power revenue (millions) 00 0.20.2

表5table 5

表6Table 6

最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制，所属领域的普通技术人员参照上述实施例依然可以对本发明的具体实施方式进行修改或者等同替换，这些未脱离本发明精神和范围的任何修改或者等同替换，均在申请待批的本发明的权利要求保护范围之内。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Those of ordinary skill in the art can still modify or equivalently replace the specific implementation methods of the present invention with reference to the above embodiments. Any modifications or equivalent replacements departing from the spirit and scope of the present invention are within the protection scope of the claims of the pending application of the present invention.

Claims

1. promote the standby and peak regulation assistant service cost apportionments method that new-energy grid-connected is dissolved, it is characterized in that: said method comprising the steps of:

Step 1: determine new-energy grid-connected based on production simulation dissolve objective function and the constraint condition of model;

Step 2: calculate the Reserve Ancillary Service cost after new-energy grid-connected;

Step 3: calculate new forms of energy wind-powered electricity generation unit income;

Step 4: calculate Reserve Ancillary Service overhead cost;

Step 5: calculate the peak regulation assistant service overhead cost that wind-powered electricity generation access causes.

2. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 1 is dissolved, is characterized in that: in described step 1, the dissolve objective function of model of the new-energy grid-connected based on production simulation is expressed as:

\begin{matrix} VOBJ = \min (ΣΣ c^{output} (p) + Σ c^{trans} (p_{trans}) + Σ c^{investment} (p_{investment}) + \\ \underset{i}{Σ} {Cost}_{i} \cdot (R_{t}^{up . i} - R_{t}^{dn . i}) \cdot {Prob}^{i} + \underset{i}{Σ} {Cost}_{i} \cdot (P_{t}^{up . i} - P_{t}^{dn . i}) \end{matrix} - - - (1)

Wherein, VOBJ is system synthesis basis; Σ Σ c ^output(p) be cost of electricity-generating, p is generating capacity; Σ c ^trans(p _trans) be transmission cost, p _transfor transmission capacity; Σ c ^investment(p _investment) be newly-increased investment cost, p _investmentfor newly-increased investment capacity; for stand-by cost, Prob ⁱfor the conventional unit of i platform, provide standby probability, Cost _ifor corresponding to Prob ⁱstand-by cost is provided, with the conventional unit t of the i platform margin capacity up and down providing is constantly provided; for peak regulation cost, Cost _iunit cost while providing peak regulation for unit i, be the conventional unit t of i platform upwards peak regulation amount constantly, it is the conventional unit t of i platform downward peak regulation amount constantly.

3. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 2 is dissolved, is characterized in that: constraint condition corresponding to simulated target function of dissolving of the new-energy grid-connected based on production simulation comprises equality constraint and inequality constrain; Described equality constraint comprises electrobalance constraint and the interior thermal equilibrium constraint of electric system in electric system, and inequality constrain comprises Unit Combination restrain condition, Reserve Constraint and peak regulation constraint.

4. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 3 is dissolved, is characterized in that: in described electric system, electrobalance constraint representation is:

\underset{{i &Element; I}_{r}}{Σ} P_{i, t} + \underset{r &Element; R}{Σ} ((1 - L_{loss}) \cdot P_{trans}) = P_{r, t}^{load} + \underset{{i &Element; I}_{elecsto}}{Σ} P_{i, t}^{stoload} &ForAll; t &Element; T, r &Element; R - - - (2)

Wherein, in formula equal sign left side for all conventional units in the r of region send power and deduct loss after with the exchange power of exterior domain, right side be load in the r of region and electric energy storage device as the power of load, and P _i,tbe that the conventional unit of i platform is at t generated output constantly, L _lossfor line loss, P _transfor transmission-line power, for t moment load power in the r of region, for the power of electric energy storage device as load, I _rfor all participation scheduling units, I _elecstofor the quantity of all electric energy storage devices as load, R is electrobalance district, and T is whole calculation interval;

In described electric system, thermal equilibrium constraint representation is:

\underset{{i &Element; I}_{a}}{Σ} H_{i, t} = H_{a, t}^{load} + \underset{{i &Element; I}_{heat_sto}}{Σ} H_{i, t}^{sto_load} &ForAll; t &Element; T, a &Element; A - - - (3)

Wherein, in formula, exert oneself for all heat energy in regional a in left side and, right side be thermal load in regional a with hot energy storage device as the power of loading, H _i,tbe the conventional unit of i platform in t thermal power constantly, for t moment thermal load power in regional a, for t hot energy storage device power of the moment in regional a, I _afor all heat supply unit numbers, I _{heat_sto}for hot energy storage device in regional a is as the quantity of thermal load, T is whole calculation interval, and A is thermal equilibrium district.

5. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 3 is dissolved, is characterized in that: described Unit Combination restrain condition comprises unit generation power constraint, the constraint of unit climbing rate and Unit Commitment time-constrain;

(1) unit generation power constraint is expressed as:

P_{i, t}^{\min} \leq P_{i, t} \leq P_{i, t}^{\max} - - - (4)

Wherein, P _i,tbe i platform genset at t generated output constantly, with be respectively i platform genset in t generated output bound constantly;

(2) unit climbing rate constraint representation is:

Δ P_{i, t} \leq Δ P_{i, t}^{\max} - - - (5)

Wherein, Δ P _i,tbe i platform genset at t generated output changing value constantly, be that i platform genset changes maximal value at t generated output constantly;

(3) Unit Commitment time-constrain is expressed as:

T ^on≥T ^minon,T ^off≥T ^minoff (6)

Wherein, T ^onand T ^offbe respectively genset and start and stand-by time, T ^minonand T ^minoffbeing respectively genset starts and stand-by time lower limit.

6. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 3 is dissolved, is characterized in that: described Reserve Constraint comprises make progress standby Constraint and downward standby Constraint, is expressed as:

Cap P_{a, i} \cdot VP {on}_{a, i} - {VP}_{a, i} &GreaterEqual; \underset{i}{Σ} {VR}_{a, i}^{up} - - - (7)

{VP}_{a, i} - CapP \min_{a, i} \cdot VPo n_{a, i} &GreaterEqual; \underset{i}{Σ} {VR}_{a, i}^{dn} - - - (8)

Wherein, CapP _a,ibe respectively the unit capacity of i platform genset in a region, VPon _a,irepresent that in a region, whether i platform genset is online, VP _a,ifor i platform genset in a region is exerted oneself, for the available upwards regulated quantity of i platform genset in a region, CapPmin _a,ifor the minimum load of i platform genset in a region, for the available downward regulated quantity of i platform genset in a region.

7. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 3 is dissolved, is characterized in that: described peak regulation constraint comprises upwards peak constraint and peak constraint downwards;

Upwards peak constraint representation is:

{VP}_{at}^{up . i} \leq {CapP}_{at} - - - (9)

Peak constraint representation is downwards:

\min {CapP}_{at} \leq {VP}_{at}^{dn, i} \leq {CapP}_{at} - - - (10)

Wherein, for the peak that makes progress; CapP _atfor unit rated capacity; MinCapP _atfor unit minimum technology is exerted oneself; for downward peak.

8. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 1 is dissolved, is characterized in that: in described step 2, the Reserve Ancillary Service cost after new-energy grid-connected is used represent, have:

{Cost}_{new}^{reserve} = (C_{current} + {Cost}_{reserve_wind}) * 110 % - - - (11)

Wherein, C _currentfor compensating Reserve Ancillary Service cost, Cost under current mechanism _{reserve_wind}for causing extra assistant service cost after new-energy grid-connected, be expressed as:

Cost _{reserve_wind}＝Cost _{wind_forecasting_error}-Cost _{perfect_wind} (12)

Wherein, Cost _{wind_forecasting_error}for new forms of energy prediction error be 20% system reserve cost, Cost _{perfect_wind}for new forms of energy prediction error is the system reserve cost of 0 o'clock, be expressed as:

{Cost}_{wind_forecasting_error} = \underset{i}{Σ} {Cost}_{i} \cdot (R_{t_winderror}^{up . i} - R_{t_winderror}^{dn . i}) \cdot {Prob}^{i} - - - (13)

{Cost}_{perfect_wind} = \underset{i}{Σ} {Cost}_{i} \cdot (R_{t_perfect_wind}^{up . i} - R_{t_perfect_wind}^{dn . i}) \cdot {Prob}^{i} - - - (14)

Wherein, Prob ⁱfor the conventional unit of i platform, provide standby probability, Cost _ifor corresponding to Prob ⁱstand-by cost is provided, with while being respectively the conventional unit t of i platform, be engraved in the margin capacity up and down that wind-powered electricity generation prediction error provides for 20% time, with the margin capacity up and down of wind-powered electricity generation prediction error for providing for 0 o'clock is provided while being respectively the conventional unit t of i platform.

9. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 1 is dissolved, is characterized in that: in described step 3, and new forms of energy wind-powered electricity generation unit income B _windrepresent, have:

B _wind＝C _{curtail_Reduced}*P _wind (15)

Wherein, C _{curtail_Reduced}for what system provided standby rear minimizing, abandon wind-powered electricity generation amount, P _windfor wind-powered electricity generation price.

10. the standby and peak regulation assistant service cost apportionments method that promotion new-energy grid-connected according to claim 1 is dissolved, is characterized in that: in described step 4, and Reserve Ancillary Service overhead cost Wind _propotionrepresent, have:

Wind _propotion＝B _wind-Wind _taken (16)

Wherein, Wind _takenfor the cost that wind-powered electricity generation is born, be more different Reserve Ancillary Service compensation mechanism, be divided into following two kinds of situations:

(a), while being born separately by wind-powered electricity generation enterprise, the cost table that wind-powered electricity generation is born is shown:

Wind _taken＝Wind′ _taken＝Cost _{reserve_wind} (17)

Wherein, Wind ' _takenfor the cost that wind-powered electricity generation enterprise bears separately, Cost _{reserve_wind}for causing extra assistant service cost after new-energy grid-connected;

(b), by wind-powered electricity generation enterprise and user during according to prediction error ratio shared, the cost table that wind-powered electricity generation is born is shown:

Wind _taken＝Wind″ _taken+Load _taken (18)

Wherein, Wind " _takenand Load _takenbe respectively the stand-by cost that cost that wind-powered electricity generation enterprise bears and user bear, be expressed as:

Wind″ _taken＝Cost _{reserve_wind}*(σ _wind/(σ _wind+σ _load)) (19)

Load _taken＝Cost _{reserve_wind}*(σ _load/(σ _wind+σ _load)) (20)

Wherein, σ _windwind-powered electricity generation prediction error, σ _loadfor Load Forecasting error.

Standby and the peak regulation assistant service cost apportionments method that 11. promotion new-energy grid-connecteds according to claim 1 are dissolved, it is characterized in that: in described step 5, the peak regulation assistant service overhead cost that wind-powered electricity generation access causes adopts has wind-powered electricity generation access and the difference of the peak regulation assistant service cost causing without wind-powered electricity generation access to calculate, and has:

{Cost}_{peak_re_wind} = {Cost}_{peak}^{wind} - {Cost}_{peak}^{no_wind} - - - (21)

Wherein, Cost _{peak_re_wind}for wind-powered electricity generation accesses the peak regulation assistant service overhead cost causing; for the peak regulation assistant service cost that has wind-powered electricity generation access to cause, the peak regulation assistant service cost causing without wind-powered electricity generation access, is expressed as:

{Cost}_{peak}^{wind} = Σ {Cost}_{i} \cdot (P_{t_wind}^{up . i} - P_{t_wind}^{dn . i}) - - - (22)

{Cost}_{peak}^{no_wind} = Σ {Cost}_{i} \cdot (P_{t_no_wind}^{up . i} - P_{t_no_wind}^{dn . i}) - - - (23)

Wherein, with the upwards peak regulation amount in the conventional unit t moment of i platform while indicating respectively wind-powered electricity generation access and downwards peak regulation amount; with be illustrated respectively in upwards peak regulation amount and the downward peak regulation amount in the conventional unit t moment of i platform while not having wind-powered electricity generation to access.