CN112365184A - Demand response scheduling method considering historical load integrator regulation and control performance - Google Patents
Demand response scheduling method considering historical load integrator regulation and control performance Download PDFInfo
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Abstract
The invention discloses a demand response scheduling method considering historical regulation and control performance of a load integrator, and relates to objects comprising a power grid scheduling center and the load integrator. Firstly, a power grid dispatching center generates demand response regulation and control demands for responding to the safe and stable operation challenge of a power grid, wherein the demand response regulation and control demands comprise peak clipping regulation and control demands and valley filling regulation and control demands; then, each load integrator reports respective demand response adjustable potential and corresponding quotation based on the running state and the adjustment and control cost of the internal adjustable resource; and finally, the power grid dispatching center combines the historical demand response event regulation and control performance of each load integrator, aims at minimizing the comprehensive dispatching cost, decomposes the demand response regulation and control demand to each load integrator, and issues a demand response regulation and control instruction. The invention comprehensively considers factors such as adjustable potential, declared price, historical regulation and control performance of each load integrator, and can improve the regulation and control execution effect while ensuring the economy of the demand response event.
Description
Technical Field
The invention belongs to the technical field of power demand response, and particularly relates to a demand response scheduling method considering historical regulation and control performance of a load integrator.
Background
In recent years, with the improvement of new energy permeability, prominent peak load of a power grid, enlarged peak-valley difference of power and other new situations, controllable means of the power grid under the traditional 'source follow-up load' mode are almost used up, and technical innovation is needed to expand power grid regulation and control resources and regulation and control means so as to ensure safe, stable and economic operation of the power grid. The power demand response realizes 'source-load interaction' by regulating and controlling adjustable load, charging pile, energy storage and other demand-side adjustable resources, can bring subsidy benefits to users while enhancing the regulation and control capability of the power grid, and realizes win-win of the power grid and the users. The load integrator can effectively aggregate massive, scattered and directly-scheduling-difficult adjustable resources on the demand side, and is a main participant of power demand response.
When the current load integrators participate in power demand response, the current load integrators often perform the operation of reporting the adjustable potential and corresponding quotation, and when the power grid dispatching center decomposes demand response regulation and control demands, or in consideration of fairness, the power grid dispatching center decomposes the demand response regulation and control demands according to the proportion of the adjustable potential of each load integrator to the total adjustable potential; or in consideration of economy, the data are sequentially called according to the arrangement from low to high of the declared prices of the load integrators so as to meet the demand response regulation and control demand. In the demand response scheduling process, the influence of the historical regulation performance of the load integrator is rarely considered, so that the regulation execution effect of the demand response event is not particularly ideal.
Therefore, a new technical scheme is urgently needed, the influences of factors such as adjustable potential of a load integrator, declared price and historical regulation performance can be comprehensively considered, and the regulation and control execution effect is improved while the economy of demand response events is ensured.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects of the prior technical scheme of demand response scheduling, the invention provides a demand response scheduling method considering the historical regulation and control performance of a load integrator.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the following technical scheme: a demand response scheduling method considering load integrator historical regulation and control performance comprises the following steps:
(1) the power grid dispatching center generates demand response regulation and control demands for responding to the power grid safe and stable operation challenge, wherein the demand response regulation and control demands comprise peak clipping regulation and control demands and valley filling regulation and control demands;
(2) collecting respective demand response adjustable potentials and corresponding quotations reported by each load integrator;
(3) comparing the total adjustable potential reported by the load integrator with the demand response regulation and control demand by the power grid dispatching center, and entering the step (4) when the total adjustable potential is greater than the demand response regulation and control demand; otherwise, issuing a corresponding demand response regulation and control instruction according to the reported adjustable potential of each load integrator, and starting other regulation and control measures;
(4) the power grid dispatching center calculates historical regulation performance indexes according to the regulation execution condition of the historical demand response event of each load integrator, and normalizes the historical regulation performance indexes;
(5) the power grid dispatching center divides the price declared by each load integrator by the normalized historical regulation performance index to obtain the sequencing price of the load integrator;
(6) the power grid dispatching center decomposes the demand response regulation and control demand to each load integrator in sequence from low to high according to the sequencing price, and preferentially calls the load integrators with large adjustable potential and good historical regulation and control performance when the sequencing prices are the same;
(7) and the power grid dispatching center issues a demand response regulation and control instruction to the corresponding load integrator according to the demand response regulation and control demand decomposition result.
Further, in the step (1), the challenges of safe and stable operation of the power grid include problems of excess or shortage of power of the power grid caused by large generation of new energy such as wind and light, overhaul or failure of power grid equipment, peak or low load of power consumption, and the like.
Further, in the step (2), each load integrator reports its own demand response adjustable potential and corresponding quotation based on the running state and the regulation and control cost of the internal adjustable resource; the adjustable resources in the load integrator comprise adjustable load, charging pile and adjustable resources for energy storage; and the load integrator analyzes and aggregates the adjustable potential according to the running state of the internal adjustable resource and by combining factors such as the safe running constraint of the adjustable resource, the influence of the comfort level of the user, the influence of the production plan and the like, and divides the adjustable potential into a demand response peak clipping regulation demand corresponding to the down-regulation potential and a demand response valley filling regulation demand corresponding to the up-regulation potential according to the regulation direction.
Further, in the step 2, after the load integrator evaluates the self demand response regulation and control cost, the demand response subsidy price is reported, and the quoted price is declared in a one-stage or multi-stage monotone non-decreasing mode within the adjustable potential range.
Further, in the step (3), when the total adjustable potential is less than or equal to the demand response regulation and control demand, all the adjustable potential reported by each load integrator is called, a corresponding demand response regulation and control instruction is issued, and other regulation and control measures including deep peak regulation of the thermal power generating unit, traditional power limiting, wind abandoning and light abandoning are started.
Further, in the step (4), a load integrator historical regulation performance index calculation formula is as follows:
in the formula: kiHistorical regulation performance indexes are load integration quotient i; kiThe smaller the load integrator I, the better the historical regulation performance of the load integrator I, and when K isiWhen the load is 0, the load integration quotient i has the best historical regulation performance; ei,jIs a set of loadsAbsolute percentage error of jth demand response regulation event of quotient i; pActual i, jResponding to an actual completion value of a regulation and control event for the jth demand of the load integrator i; pTarget i, jRegulating and controlling a target value for a jth demand response regulation and control event of the load integrator i; miResponding to the total times of the regulation and control events for the historical demand of the load integration quotient i; n is a constant, represents the latest N times of regulation events before the current demand response regulation event, and is temporarily set as 5; kmax、KminIs a constant.
Further, in the step (4), the load integrator historical regulation performance index normalization processing method includes:
in the formula: lambda (K)i) The normalized load integration quotient i historical regulation performance index has a numerical value of 0.1-1.
Further, in the step (5), the calculation formula of the ranking price of each load integrator is as follows:
in the formula: ci, orderingOrdering prices, C, for load integration quotient ii, declarationAnd reporting the price for the load integrator i.
Further, in the step (6), in order to minimize the comprehensive scheduling cost, the calling priorities of the load integrators are determined one by one according to the sequence price from low to high, the adjustable potential from high to low, and the historical regulation performance from good to poor, the marginal priority is determined according to the demand response regulation demand, and the demand response regulation demand is sequentially decomposed to all the load integrators of which the priority is not lower than the marginal priority.
Further, in the step (7), the demand response regulation and control instruction issued by the power grid dispatching center to each calling load integrator includes a regulation and control target value, a regulation and control start-stop time and a subsidy price; wherein the subsidy price is equal to the declared price of each load integrator and is not equal to the ranking price.
The invention has at least the following beneficial effects: aiming at the defects in the prior technical scheme of demand response scheduling, the invention defines and calculates the historical regulation performance index according to the historical demand response event regulation and control execution condition of each load integrator, normalizes the historical regulation performance index, combines the reporting price of the load integrator, calculates the sequencing price, reasonably and orderly decomposes the demand response regulation and control demand to each load integrator according to the sequence of the sequencing price from low to high, the adjustable potential from large to small and the historical regulation and control performance from good to bad, and can improve the regulation and control execution effect of the demand response event while ensuring the economy of the demand response event by comprehensively considering the adjustable potential, the reporting price, the historical regulation and control performance and other factors of each load integrator, thereby being more beneficial to the safe, economical and stable operation of a power grid.
Drawings
FIG. 1 is a flow chart of a demand response scheduling method that accounts for load integrator historical regulatory performance in accordance with the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Example (b): according to the information of the power grid operation condition, the new energy power generation prediction, the load regulation prediction and the like, a power grid dispatching center in a certain area predicts that a peak load is prominent in a certain period of the next day and the shortage exists in the power grid power, and needs to initiate a peak clipping demand response event, and sends a demand response regulation and control instruction to a load integrator in the area.
Step 1: and the power grid dispatching center initiates a peak clipping demand response event to ensure the safe and stable operation of the power grid, generates the peak clipping regulation demand of the next day, and has the starting and stopping time of 14: 00-16: 00 of the next day and the regulation capacity of 20 MW.
Step 2: and respectively reporting the respective down-regulation potential and the quotation in the corresponding time interval by 10 load integrators in the region, wherein the quotation adopts a one-stage quotation, as shown in a table 1.
Table 1: respective down-regulation potentials and quotations of 10 load integrators in corresponding time periods in regions
And step 3: and (4) comparing the total adjustable potential reported by the load integrator with the demand response regulation and control demand, finding that the total adjustable potential is 32MW and is greater than the demand response regulation and control demand by 20MW, and entering the step 4.
And 4, step 4: and the power grid dispatching center calculates the historical regulation performance index according to the historical regulation performance index calculation formula of the load integrator according to the regulation execution condition of the historical demand response event of each load integrator, and performs normalization processing according to the formula of the load integrator historical regulation performance index normalization processing method. The results are shown in Table 2.
Table 2: historical regulation and control performance index and normalized index of 10 load integrator in region
And 5: and the power grid dispatching center calculates the ranking price according to the ranking price calculation formula of each load integrator based on the declared price of each load integrator and the normalized historical regulation performance index. The results are shown in Table 3.
Table 3: price declaration and sorting price of 10 load integrator suppliers in region
Step 6: the power grid dispatching center determines 10 load integrator calling priorities one by one according to the sequence of low ordering price, high adjustable potential and good historical regulation performance, determines the marginal priority as 6 according to demand response regulation requirements, and decomposes the demand response regulation requirements to all load integrator with the priority of 1-6 according to the priority sequence. The priorities and decomposition results are shown in table 4.
Table 4: regional 10 load integration business calling priority and decomposition demand
And 7: and the power grid dispatching center sends a demand response regulation and control instruction to the load integrators with the priority of 1-6 according to the demand response regulation and control demand decomposition result, wherein the instruction comprises a regulation and control target value, a regulation and control starting and stopping time (14: 00-16: 00 the next day), subsidy prices and the like, and the subsidy prices are equal to the declared prices of the load integrators. Except for the control start-stop time, the instruction information is shown in table 5.
Table 5: demand response regulation and control instruction information of 10 load integrators in region
The results of the previous 7 steps are integrated, and the subsidy amount of each load integrator is estimated according to the subsidy price, and the calculation result of the technical scheme of the invention in the embodiment is shown in table 6.
Table 6: in the embodiment, the technical scheme of the invention calculates the result
Analysis of table 6 revealed that: the load integrator No.9 declares that the price is the lowest, if the price is the lowest according to the principle of simple economy priority, the highest priority is called first, but because the historical regulation performance index is the worst, the actual calling priority is 10 according to the calculation result of the sequencing price, and the bottom is filled in 10 load integrators; and comparing the load integrator No.3 with the load integrator No.10, wherein although the No.3 declared price is less than the No.10, the No.3 actual calling priority (6) is lower than the No.10 priority (4) because the No.3 historical regulation performance index is worse than the No. 10. In summary, the technical scheme adopted by the invention aims at minimizing the comprehensive scheduling cost, and the influences of multiple factors such as adjustable potential of each load integrator, declared price, historical regulation performance and the like are comprehensively considered when the demand response regulation demand decomposition is carried out.
If the demand response regulation and control demands are arranged from low to high according to the principle of simple economic priority, the demand response regulation and control demands are sequentially decomposed to each load integrator, and the calculation result is shown in table 7.
Table 7: calculation result of single-purity economic priority technical scheme under embodiment
By comparing the two technical schemes in table 6 and table 7, it can be found that: the total subsidy amounts of the load integrator are respectively 6.5 ten thousand yuan and 5.9 ten thousand yuan under the calculation results of the two technical schemes, and the economical efficiency is not greatly different; under the technical scheme of simple economic priority, the load integrator No.9 can be called with the identity priority of the No. 2 calling priority, and the No.9 regulation effect in the current demand response event can be expected to be still not ideal in consideration of the worst No.9 historical regulation performance index; in the calculation result of the technical scheme of the invention, the load integrator No.9 is replaced by No.1, although the No.1 declaration price is slightly higher than No.9, the historical regulation performance index is far better than No.9, and the regulation execution effect of the current demand response event can be greatly improved. In conclusion, the technical scheme adopted by the invention can ensure the economy of the demand response event and improve the regulation and control execution effect, thereby being more beneficial to the safe, economical and stable operation of the power grid.
The examples are intended to illustrate the invention further, but are not intended to limit the invention to these specific embodiments. It will be appreciated by those skilled in the art that the present invention encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.
Claims (10)
1. A demand response scheduling method considering load integrator historical regulation performance is characterized by comprising the following steps:
(1) the power grid dispatching center generates demand response regulation and control demands for responding to the power grid safe and stable operation challenge, wherein the demand response regulation and control demands comprise peak clipping regulation and control demands and valley filling regulation and control demands;
(2) collecting respective demand response adjustable potentials and corresponding quotations reported by each load integrator;
(3) comparing the total adjustable potential reported by the load integrator with the demand response regulation and control demand by the power grid dispatching center, and entering the step (4) when the total adjustable potential is greater than the demand response regulation and control demand; otherwise, issuing a corresponding demand response regulation and control instruction according to the reported adjustable potential of each load integrator, and starting other regulation and control measures;
(4) the power grid dispatching center calculates historical regulation performance indexes according to the regulation execution condition of the historical demand response event of each load integrator, and normalizes the historical regulation performance indexes;
(5) the power grid dispatching center divides the price declared by each load integrator by the normalized historical regulation performance index to obtain the sequencing price of the load integrator;
(6) the power grid dispatching center decomposes the demand response regulation and control demand to each load integrator in sequence from low to high according to the sequencing price, and preferentially calls the load integrators with large adjustable potential and good historical regulation and control performance when the sequencing prices are the same;
(7) and the power grid dispatching center issues a demand response regulation and control instruction to the corresponding load integrator according to the demand response regulation and control demand decomposition result.
2. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (1), the challenges of safe and stable operation of the power grid include problems of excess or shortage of power of the power grid caused by large generation of new energy such as wind and light, overhaul or fault of power grid equipment, peak or valley of power load and the like.
3. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (2), each load integrator reports the adjustable potential of the respective demand response and the corresponding quotation based on the running state and the regulation and control cost of the internal adjustable resource; the adjustable resources in the load integrator comprise adjustable load, charging pile and adjustable resources for energy storage; and the load integrator analyzes and aggregates the adjustable potential according to the running state of the internal adjustable resource and by combining factors such as the safe running constraint of the adjustable resource, the influence of the comfort level of the user, the influence of the production plan and the like, and divides the adjustable potential into a demand response peak clipping regulation demand corresponding to the down-regulation potential and a demand response valley filling regulation demand corresponding to the up-regulation potential according to the regulation direction.
4. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 3, wherein: in the step 2, after the load integrator evaluates the self demand response regulation and control cost, the demand response subsidy price is reported, and the quoted price is reported in a single-stage or multi-stage monotone non-decreasing mode within the adjustable potential range.
5. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (3), when the total adjustable potential is less than or equal to the demand response regulation and control demand, all the adjustable potential reported by each load integrator is called, a corresponding demand response regulation and control instruction is issued, and other regulation and control measures including deep peak regulation of the thermal power generating unit, traditional power limiting, wind abandoning and light abandoning are started at the same time.
6. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (4), the load integrator historical regulation performance index calculation formula is as follows:
in the formula：KiHistorical regulation performance indexes are load integration quotient i; kiThe smaller the load integrator I, the better the historical regulation performance of the load integrator I, and when K isiWhen the load is 0, the load integration quotient i has the best historical regulation performance; ei,jResponding to the absolute percentage error of the regulation event for the jth demand of the load integrator i; pActual i, jResponding to an actual completion value of a regulation and control event for the jth demand of the load integrator i; pTarget i, jRegulating and controlling a target value for a jth demand response regulation and control event of the load integrator i; miResponding to the total times of the regulation and control events for the historical demand of the load integration quotient i; n is a constant, represents the latest N times of regulation events before the current demand response regulation event, and is temporarily set as 5; kmax、KminIs a constant.
7. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (4), the load integrator historical regulation performance index normalization processing method comprises the following steps:
in the formula: lambda (K)i) The normalized load integration quotient i historical regulation performance index has a numerical value of 0.1-1.
8. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (5), the calculation formula of the ranking price of each load integrator is as follows:
in the formula: ci, orderingOrdering prices, C, for load integration quotient ii, declarationAnd reporting the price for the load integrator i.
9. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (6), in order to minimize the comprehensive scheduling cost, the calling priorities of the load integrators are determined one by one according to the low ordering price, the large adjustable potential and the small adjustable potential, the marginal priorities are determined according to the historical regulation performance, and the demand response regulation requirements are sequentially decomposed into all the load integrators of which the priorities are not lower than the marginal priorities.
10. The demand response scheduling method in consideration of load integrator historical regulation performance of claim 1, wherein: in the step (7), the demand response regulation and control instruction issued by the power grid dispatching center to each calling load integrator comprises a regulation and control target value, a regulation and control starting and stopping time and a subsidy price; wherein the subsidy price is equal to the declared price of each load integrator and is not equal to the ranking price.
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| CN113487151A (en) * | 2021-06-23 | 2021-10-08 | 广东润建电力科技有限公司 | Intelligent power utilization and demand side response method, system and device based on 5G message |
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| CN111027739A (en) * | 2019-10-23 | 2020-04-17 | 广东电力交易中心有限责任公司 | Double-layer two-stage demand response scheduling method and system based on load integrator |
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| CN108022029A (en) * | 2016-11-02 | 2018-05-11 | 中国电力科学研究院 | A kind of power system delamination and subarea equilibrium of supply and demand regulation and control method and regulation device |
| CN110044020A (en) * | 2019-03-29 | 2019-07-23 | 杭州电子科技大学 | The Demand Side Response method of meter and air conditioner user comfort level |
| CN111027739A (en) * | 2019-10-23 | 2020-04-17 | 广东电力交易中心有限责任公司 | Double-layer two-stage demand response scheduling method and system based on load integrator |
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| CN113487151A (en) * | 2021-06-23 | 2021-10-08 | 广东润建电力科技有限公司 | Intelligent power utilization and demand side response method, system and device based on 5G message |
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