CN111738545A - Power grid side virtual power plant load valley filling response income assessment method and device - Google Patents
Power grid side virtual power plant load valley filling response income assessment method and device Download PDFInfo
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Abstract
The invention discloses a load valley filling response income evaluation method and device for a virtual power plant on a power grid side, wherein the method comprises the following steps: acquiring year-round load state data; calculating to obtain the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response according to the annual load state data, the preset low valley load valley filling percentage and the incentive electricity price; and evaluating the load valley filling response income of the virtual power plant at the power grid side based on the maximum income and the minimum income. In the implementation of the method, the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response are effectively evaluated, and the calculation is simple and convenient.
Description
Technical Field
The invention relates to the technical field of virtual power plant application, in particular to a method and a device for evaluating load valley filling response income of a virtual power plant on a power grid side.
Background
In recent years, due to rapid development of distributed power generation, promotion of demand-side management and construction of smart power grids and energy internets, the current power system is developing towards diversification of energy supply resources, decentralization of energy resources and cleaning of resource types, and a series of challenges are brought to power grid operation. The virtual power plant optimizes distributed resources such as distributed power generation, an energy storage system, controllable loads, electric vehicles and the like through aggregation and dispatching, and provides a novel idea and solution for the development of a power grid under a new situation. The development and application of the virtual power plant can greatly enrich the business connotation of the power grid enterprise, and is a feasible measure for building a strong and intelligent green power grid. However, the construction of the virtual power plant needs to depend on technical supports such as communication equipment, automatic control equipment and a software platform, and the economic investment is large, so that the income of the virtual power plant is scientifically and comprehensively evaluated, the economic efficiency and the feasibility of the virtual power plant are analyzed, and the method has important reference value for the engineering application of the virtual power plant.
In the existing economic assessment method for the virtual power plant, most of the economic assessment methods are used for assessing and calculating construction cost, labor cost, equipment investment and the like of the virtual power plant, the operation requirement and income influence of the power grid side on the virtual power plant are not considered, and economic benefits brought by the construction of the virtual power plant are not assessed comprehensively.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a method and a device for evaluating load valley filling response income of a virtual power plant on a power grid side, which are used for effectively evaluating the maximum income and the minimum income of the virtual power plant when participating in the load valley filling response.
In order to solve the technical problem, an embodiment of the present invention provides a method for evaluating load valley filling response income of a virtual power plant on a power grid side, where the method includes:
acquiring year-round load state data;
calculating to obtain the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response according to the annual load state data, the preset low valley load valley filling percentage and the incentive electricity price;
and evaluating the load valley filling response income of the virtual power plant at the power grid side based on the maximum income and the minimum income.
Optionally, the specific calculation formula of the maximum profit is as follows:
Fmax＝pVPP×EVPP,max；
wherein, FmaxFor maximum profit when a virtual power plant participates in a load valley filling response, pVPPFor incentive electricity prices when virtual power plants participate in valley load filling, EVPP,maxAnd responding the potential maximum valley filling response electric quantity when the virtual power plant participates in the load valley filling response.
Optionally, the virtual power plant participates in the maximum valley filling response electric quantity E when the load valley filling response is performedVPP,maxSpecific formula of calculationThe following were used:
EVPP,max＝∑CVPP× t, and Pt∈[Pmin,Pmin×(1+s,min)]；
Wherein t is time, CVPPIs the capacity of a virtual power plant, PminFor the minimum load of the regional power grid in the valley,s,minpercentage of load valley fill when filling the virtual power plant with valley load, [ Pmin,Pmin×(1+s,min)]Namely the valley filling interval when the virtual power plant is filled with the valley load.
Optionally, capacity C of the virtual power plantVPPThe specific calculation formula of (2) is as follows:
CVPP＝Pmin×s,min；
wherein, PminFor the minimum load of the regional power grid in the valley,s,minload valley fill percentage when filling the virtual power plant with the valley load.
Optionally, the specific calculation formula of the minimum profit is as follows:
Fmin＝pVPP×EVPP,min；
wherein, FminFor minimal gain, p, of a virtual power plant in participating in a load valley fill responseVPPFor incentive electricity prices when virtual power plants participate in valley load filling, EVPP,minAnd respectively responding the potential minimum valley filling response electric quantity when the virtual power plant participates in the load valley filling response.
Optionally, the virtual power plant participates in the load valley filling response, and the potential minimum valley filling response electric quantity EVPP,minThe specific calculation formula of (2) is as follows:
EVPP,min＝∑(Pmin×(1+s,min)-Pt) × t, and Pt∈[Pmin,Pmin×(1+s,min)]；
Wherein, PminFor the minimum load of the regional power grid in the valley,s,minpercentage of load valley fill when filling the virtual power plant with valley load, [ Pmin,Pmin×(1+s,min)]Namely the valley filling interval when the virtual power plant is filled with the valley load.
In addition, an embodiment of the present invention further provides a device for evaluating load valley filling response revenue of a virtual power plant on a power grid side, where the device includes: a regional power grid load receiver and a virtual power plant load valley filling response income assessment processor; wherein the content of the first and second substances,
the regional power grid load receiver: the system is used for being in butt joint with a regional power grid load interface and acquiring annual load state data;
the virtual power plant load valley filling response income assessment processor: and calculating to obtain the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response according to the annual load state data, the preset low valley load valley filling percentage and the incentive electricity price.
Optionally, the virtual power plant load valley filling response revenue assessment processor further includes: and evaluating the load valley filling response income of the virtual power plant at the power grid side based on the maximum income and the minimum income.
Optionally, the virtual power plant load valley filling response income assessment processor is connected with the regional power grid load receiver, and collects and monitors required information in real time.
In the implementation of the invention, by collecting the regional power grid annual load data, the incentive electricity price and the basic information of the load valley filling percentage, the power grid side virtual power plant load valley filling response income evaluation device can effectively evaluate the maximum income and the minimum income of the virtual power plant when participating in the load valley filling response; the method fully considers the annual load data, the incentive electricity price and the load valley filling percentage of the regional power grid, can reasonably evaluate the maximum benefit and the minimum benefit when the virtual power plant participates in the load valley filling response, is simple and convenient to calculate, and can provide an effective means for comprehensively evaluating the construction benefit of the virtual power plant.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a load valley filling response income assessment method of a power grid-side virtual power plant in an embodiment of the invention;
FIG. 2 is a schematic structural composition diagram of a load valley filling response profit assessment device of a power grid-side virtual power plant in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a calculation result of maximum profit and minimum profit when a virtual power plant in a certain area participates in a load valley filling response in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, fig. 1 is a schematic flow chart of a load valley filling response revenue assessment method of a virtual power plant on a power grid side in an embodiment of the present invention.
As shown in fig. 1, a method for assessing load-valley-fill response revenue of a virtual power plant on a power grid side includes:
s11: acquiring year-round load state data;
in the specific implementation process of the invention, the regional power grid load interface is connected with the regional power grid load receiver to obtain annual load state data.
S12: calculating to obtain the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response according to the annual load state data, the preset low valley load valley filling percentage and the incentive electricity price;
specifically, the specific calculation formula of the maximum profit is as follows:
Fmax＝pVPP×EVPP,max；
wherein, FmaxFor maximum profit when a virtual power plant participates in a load valley filling response, pVPPFor incentive electricity prices when virtual power plants participate in valley load filling, EVPP,maxAnd responding the potential maximum valley filling response electric quantity when the virtual power plant participates in the load valley filling response.
Potential maximum valley filling response electric quantity E when the virtual power plant participates in the load valley filling responseVPP,maxThe specific calculation formula of (2) is as follows:
EVPP,max＝∑CVPP× t, and Pt∈[Pmin,Pmin×(1+s,min)]；
Wherein t is time, CVPPIs the capacity of a virtual power plant, PminFor the minimum load of the regional power grid in the valley,s,minpercentage of load valley fill when filling the virtual power plant with valley load, [ Pmin,Pmin×(1+s,min)]Namely the valley filling interval when the virtual power plant is filled with the valley load.
Capacity C of the virtual power plantVPPThe specific calculation formula of (2) is as follows:
CVPP＝Pmin×s,min；
wherein, PminFor the minimum load of the regional power grid in the valley,s,minload valley fill percentage when filling the virtual power plant with the valley load.
Specifically, the specific calculation formula of the minimum profit is as follows:
Fmin＝pVPP×EVPP,min；
wherein, FminFor minimal gain, p, of a virtual power plant in participating in a load valley fill responseVPPFor incentive electricity prices when virtual power plants participate in valley load filling, EVPP,minAnd respectively responding the potential minimum valley filling response electric quantity when the virtual power plant participates in the load valley filling response.
Potential minimum valley filling response electric quantity E when the virtual power plant participates in the load valley filling responseVPP,minThe specific calculation formula of (2) is as follows:
EVPP,min＝∑(Pmin×(1+s,min)-Pt) × t, and Pt∈[Pmin,Pmin×(1+s,min)]；
Wherein, PminFor the minimum load of the regional power grid in the valley,s,minpercentage of load valley fill when filling the virtual power plant with valley load, [ Pmin,Pmin×(1+s,min)]Namely the valley filling interval when the virtual power plant is filled with the valley load.
S13: and evaluating the load valley filling response income of the virtual power plant at the power grid side based on the maximum income and the minimum income.
In the implementation of the invention, by collecting the regional power grid annual load data, the incentive electricity price and the basic information of the load valley filling percentage, the power grid side virtual power plant load valley filling response income evaluation device can effectively evaluate the maximum income and the minimum income of the virtual power plant when participating in the load valley filling response; the method fully considers the annual load data, the incentive electricity price and the load valley filling percentage of the regional power grid, can reasonably evaluate the maximum benefit and the minimum benefit when the virtual power plant participates in the load valley filling response, is simple and convenient to calculate, and can provide an effective means for comprehensively evaluating the construction benefit of the virtual power plant.
Example two
Referring to fig. 2, fig. 2 is a schematic structural composition diagram of a load valley filling response income evaluation device of a power grid-side virtual power plant in an embodiment of the present invention.
As shown in fig. 2, a device for assessing load-valley-fill response revenue of a power grid-side virtual power plant comprises: a regional power grid load receiver 11 and a virtual power plant load valley filling response income evaluation processor 12; the virtual power plant load valley filling response income assessment processor 12 is connected with the regional power grid load receiver 11 and is used for acquiring and monitoring required information in real time; wherein the content of the first and second substances,
the regional power grid load receiver 11: the system is used for being in butt joint with a regional power grid load interface and acquiring annual load state data;
the virtual power plant load valley filling response revenue assessment processor 12: and calculating to obtain the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response according to the annual load state data, the preset low valley load valley filling percentage and the incentive electricity price.
In an implementation process of the present invention, the virtual power plant load valley filling response revenue assessment processor 12 further includes: and evaluating the load valley filling response income of the virtual power plant at the power grid side based on the maximum income and the minimum income.
Specifically, the working principle of the device related function module according to the embodiment of the present invention may refer to the description related to the first method embodiment, and is not described herein again.
In the implementation of the invention, by collecting the regional power grid annual load data, the incentive electricity price and the basic information of the load valley filling percentage, the power grid side virtual power plant load valley filling response income evaluation device can effectively evaluate the maximum income and the minimum income of the virtual power plant when participating in the load valley filling response; the method fully considers the annual load data, the incentive electricity price and the load valley filling percentage of the regional power grid, can reasonably evaluate the maximum benefit and the minimum benefit when the virtual power plant participates in the load valley filling response, is simple and convenient to calculate, and can provide an effective means for comprehensively evaluating the construction benefit of the virtual power plant.
EXAMPLE III
In particular implementation, as shown in fig. 3, fig. 3 shows the calculation results of the maximum profit and the minimum profit when a virtual power plant in a certain area participates in a load valley filling response. As can be seen from comparison of the results of fig. 3, when the percentage of load valley filling when filling the valley load is set to 10%, i.e., the abscissa value shows the point corresponding to 0.1, the maximum demand response amount when the virtual power plant participates in the valley load filling is 6.83 hundred million kWh, and the minimum demand response amount is 2.28 hundred million kWh; calculating according to the response electricity price of 0.8 yuan/kWh, and calculating that the income range of the virtual power plant participating in the load valley filling response is 1.83-5.47 yuan; it can also be seen from fig. 3 that as the virtual plant capacity is larger in participating in the valley load fill response, the corresponding difference between the minimum and maximum gains is also larger.
In the implementation of the invention, by collecting the regional power grid annual load data, the incentive electricity price and the basic information of the load valley filling percentage, the power grid side virtual power plant load valley filling response income evaluation device can effectively evaluate the maximum income and the minimum income of the virtual power plant when participating in the load valley filling response; the method fully considers the annual load data, the incentive electricity price and the load valley filling percentage of the regional power grid, can reasonably evaluate the maximum benefit and the minimum benefit when the virtual power plant participates in the load valley filling response, is simple and convenient to calculate, and can provide an effective means for comprehensively evaluating the construction benefit of the virtual power plant.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
In addition, the method and the device for evaluating load valley filling response income of the virtual power plant at the power grid side provided by the embodiment of the invention are described in detail, a specific embodiment is adopted to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A power grid side virtual power plant load valley filling response income assessment method is characterized by comprising the following steps:
acquiring year-round load state data;
calculating to obtain the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response according to the annual load state data, the preset low valley load valley filling percentage and the incentive electricity price;
and evaluating the load valley filling response income of the virtual power plant at the power grid side based on the maximum income and the minimum income.
2. The method for assessing load-valley-fill response revenue of a power grid-side virtual power plant according to claim 1, wherein the specific calculation formula of the maximum revenue is as follows:
Fmax＝pVPP×EVPP,max；
wherein, FmaxFor maximum profit when a virtual power plant participates in a load valley filling response, pVPPFor incentive electricity prices when virtual power plants participate in valley load filling, EVPP,maxAnd responding the potential maximum valley filling response electric quantity when the virtual power plant participates in the load valley filling response.
3. The method as claimed in claim 2, wherein the virtual power plant participates in the load-filling response, and the potential maximum power E of the load-filling response is estimatedVPP,maxThe specific calculation formula of (2) is as follows:
EVPP,max＝∑CVPP× t, and Pt∈[Pmin,Pmin×(1+s,min)]；
Wherein t is time, CVPPIs the capacity of a virtual power plant, PminFor the minimum load of the regional power grid in the valley,s,minpercentage of load valley fill when filling the virtual power plant with valley load, [ Pmin,Pmin×(1+s,min)]Namely the valley filling interval when the virtual power plant is filled with the valley load.
4. The method of claim 3, wherein the capacity C of the virtual power plant is estimated according to the load-valley-fill response income of the virtual power plantVPPThe specific calculation formula of (2) is as follows:
CVPP＝Pmin×s,min；
wherein, PminFor the minimum load of the regional power grid in the valley,s,minfilling load in valley load for virtual power plantPercentage (D).
5. The method for assessing load-valley-fill response revenue of a power grid-side virtual power plant according to claim 1, wherein the specific calculation formula of the minimum revenue is as follows:
Fmin＝pVPP×EVPP,min；
wherein, FminFor minimal gain, p, of a virtual power plant in participating in a load valley fill responseVPPFor incentive electricity prices when virtual power plants participate in valley load filling, EVPP,minAnd respectively responding the potential minimum valley filling response electric quantity when the virtual power plant participates in the load valley filling response.
6. The method as claimed in claim 5, wherein the virtual power plant is configured to participate in the load-valley-fill response with the potential minimum valley-fill response electric quantity EVPP,minThe specific calculation formula of (2) is as follows:
EVPP,min＝∑(Pmin×(1+s,min)-Pt) × t, and Pt∈[Pmin,Pmin×(1+s,min)]；
Wherein, PminFor the minimum load of the regional power grid in the valley,s,minpercentage of load valley fill when filling the virtual power plant with valley load, [ Pmin,Pmin×(1+s,min)]Namely the valley filling interval when the virtual power plant is filled with the valley load.
7. A utility-side virtual power plant load valley filling response profit assessment apparatus, the apparatus comprising: a regional power grid load receiver and a virtual power plant load valley filling response income assessment processor; wherein the content of the first and second substances,
the regional power grid load receiver: the system is used for being in butt joint with a regional power grid load interface and acquiring annual load state data;
the virtual power plant load valley filling response income assessment processor: and calculating to obtain the maximum benefit and the minimum benefit of the virtual power plant participating in the load valley filling response according to the annual load state data, the preset low valley load valley filling percentage and the incentive electricity price.
8. The grid-side virtual plant load valley filling response profit assessment device according to claim 7, wherein said virtual plant load valley filling response profit assessment processor further comprises: and evaluating the load valley filling response income of the virtual power plant at the power grid side based on the maximum income and the minimum income.
9. The utility grid side virtual power plant load valley filling response profit assessment device according to claim 7, wherein the virtual power plant load valley filling response profit assessment processor is connected with a regional power grid load receiver for real-time collection and monitoring of required information.
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