CN109472469B - Multi-subject interactive coordination method and system for promoting consumption of park clean energy - Google Patents
Multi-subject interactive coordination method and system for promoting consumption of park clean energy Download PDFInfo
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Abstract
本发明涉及一种促进园区清洁能源消纳的多主体互动协调方法及系统，包括：计算园区配网的不平衡电量，若不平衡电量不为零，则利用清洁能源主体、储能主体和柔性负荷主体分别获取园区配网市场发出的互动协调信息；通过互动协调信息分别计算清洁能源主体、储能主体和柔性负荷主体的响应量和响应效益；按响应效益由高到低排序确定清洁能源主体、储能主体和柔性负荷主体的响应优先级；按照响应优先级和响应量确定互动方案，并计算剩余不平衡电量；若剩余不平衡电量不为零，则由电网对剩余不平衡电量进行平衡后将清洁能源主体、储能主体和柔性负荷主体按互动方案进行出力。本发明能够提高含清洁能源的园区配网中各主体的效益。
The invention relates to a multi-agent interaction and coordination method and system for promoting clean energy consumption in the park, including: calculating the unbalanced electricity of the distribution network in the park; The load subject obtains the interactive coordination information issued by the distribution network market of the park respectively; the response volume and response benefit of the clean energy subject, the energy storage subject and the flexible load subject are calculated respectively through the interactive coordination information; the clean energy subject is determined according to the order of response benefits from high to low , the response priority of the energy storage main body and the flexible load main body; determine the interaction plan according to the response priority and response amount, and calculate the remaining unbalanced power; if the remaining unbalanced power is not zero, the grid will balance the remaining unbalanced power After that, the main body of clean energy, the main body of energy storage and the main body of flexible load will be output according to the interactive plan. The invention can improve the benefit of each main body in the park distribution network containing clean energy.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to a multi-subject interactive coordination method and a multi-subject interactive coordination system for promoting the consumption of park clean energy.
Background
Further improving the permeability of clean energy in a distribution network is a key measure in the construction of a new generation of power grid, but the uncertainty and randomness of the clean energy cannot be directly matched with the reliability and stability required by a garden distribution network, so that the optimal operation of the garden distribution network containing the clean energy is always paid attention to by researchers.
By introducing controllable equipment such as an energy storage element and a flexible load into the garden distribution network, an optimal power flow model of multi-objective collaborative optimization is established, so that the consumption of clean energy in a garden is a main technical method adopted at present on the basis of meeting the operation requirements of the garden distribution network. However, with the continuous improvement and development of market mechanisms in the distribution network of the garden, all the main bodies in the garden must participate in market competition, and the conventional centralized optimization method is difficult to accurately represent the characteristics and benefits of all the main bodies. And because of the convenience and instantaneity of information transfer under the market mechanism, the interaction incidence relation between the subjects must be analyzed and researched. The conventional centralized optimization method usually aims at optimizing certain overall indexes during calculation, and the optimal indexes of multiple main bodies in a garden distribution network cannot be considered. And when the interaction problem of a plurality of main bodies in a garden distribution network is involved, the conventional centralized optimization method also has obvious defects.
Disclosure of Invention
In view of the above, the present invention provides a multi-subject interactive coordination method and system for promoting the consumption of clean energy in a park, which can improve the benefits of each subject in a park distribution network containing clean energy.
The invention is realized by adopting the following scheme: a multi-subject interactive coordination method for promoting consumption of park clean energy specifically comprises the following steps:
step S1: calculating unbalanced electric quantity delta Q of distribution network in parkDN(t) and determining Δ QDN(t) determining whether the value is zero, if yes, ending; otherwise, go to step S2;
step S2: respectively acquiring interaction coordination information sent by a garden distribution network market by using a clean energy main body, an energy storage main body and a flexible load main body;
step S3: respectively calculating the response quantity and the response benefit of the clean energy main body, the energy storage main body and the flexible load main body through the interaction coordination information;
step S4: determining the response priority of the clean energy body, the energy storage body and the flexible load body according to the response benefit from high to low;
step S5: determining an interaction scheme according to the response priority, and calculating the residual unbalance electric quantity delta QDN(t)'；
Step S6: judging residual unbalance electric quantity delta QDN(t)' is zero, if yes, go to step S8, otherwise go to step S7;
step S7: the residual unbalance electric quantity delta Q is generated by the power gridDN(t)' and proceeds to step S8;
step S8: and (5) outputting the clean energy body, the energy storage body and the flexible load body according to the interaction scheme determined in the step S5.
Further, in step S2, the interactive coordination information includes unbalanced power amount information and campus network guidance power rate information.
Further, in step S3, the response benefit pr of the clean energy main bodyCEThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
planned electricity prices for the network market in the park during the time period t, cDN(t) is the guide electricity price of the garden distribution network market in the time period t,
and unbalanced electric quantity of the garden distribution network in the time period t.
Further, in step S3, the response benefit pr of the energy storage main bodyESThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
is the maximum charging price of the energy storage main body, which is determined by the maximum charging times of the energy storage and the planned price of the garden distribution network market,
is the minimum discharge electricity price of the energy storage main body, which is determined by the maximum discharge times of the energy storage and the planned electricity price of the garden distribution network market, cDNAnd (t) the guiding electricity price of the garden distribution network market in the time period t.
Further, in step S3, the response benefit pr of the flexible load main bodyFLThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
in order to meet the demand electric quantity before the flexible load main body responds in the t period,
is the required electric quantity of the flexible load body after the response in the time period t, epsilon is the elastic index of the flexible load body in the response of the requirement, cDN(t) is the guide electricity price of the garden distribution network market in the time period t,
and (4) distributing the planned electricity price of the network market in the garden in the time period t.
Further, the
The calculation of (c) is backward-extrapolated using the following equation:
in the formula (I), the compound is shown in the specification,
and the actual electricity price of the flexible load main body after responding to the garden distribution network market in the time period t is shown.
Preferably,. DELTA.QDN(t) > 0 represents that the electric quantity of the garden distribution network in the t period is over-demand, and delta QDNAnd (t) < 0 represents that the electric quantity of the garden distribution network in the t period is short of supply and demand.
Further, in step S3, the response amount is a smaller value of the unbalanced electric quantity and the remaining available electric quantity of each subject.
Further, the unbalance electric quantity Δ QDNThe calculation method of (t) is as follows: and adding all loads in the garden distribution network and the unbalanced electric quantity of the distributed power supply.
Further, the residue isResidual unbalance electric quantity delta QDNThe calculation method of (t)' is as follows: and adding all loads in the garden distribution network and the residual unbalanced electric quantity of the distributed power supply.
Preferably, the interaction scheme determined in step S5 is: and sequentially taking all the residual available electric quantity of each priority main body as the electric quantity actually participating in interaction before the unbalanced electric quantity is eliminated according to the response priority of each main body from high to low, thereby determining the final interactive electric quantity scheme of each main body.
The invention also provides a system based on the multi-subject interactive coordination method for promoting the consumption of the park clean energy, which comprises a processing module and a storage module, wherein the storage module stores the method instructions of the steps S1 to S8, and the processing module is used for executing the instructions in the storage module.
Compared with the prior art, the invention has the following beneficial effects: the invention considers the phenomena of partial wind abandoning, light abandoning, reverse tide and the like caused by a large amount of clean energy in the garden distribution network, not only simplifies the characteristic and benefit characterization problems of a plurality of main bodies in the garden distribution network containing the clean energy by combining the deep participation of an energy storage main body and a flexible load main body under a power market mechanism along with the real-time response of the garden electricity price, but also realizes the maximum consumption of the clean energy in the garden distribution network through the interactive coordination among the plurality of main bodies, thereby improving the running benefits of all the main bodies, improving the unbalanced electric quantity level of the garden distribution network and realizing the safe, economic and reliable running of the garden distribution network. The method provides a method for further improving the clean energy permeability of the garden distribution network and the cooperative management and control of the energy storage main body, the flexible load main body and the like, and improves the benefits of each main body in the garden under the action of a marketization mechanism.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, the present embodiment provides a multi-subject interactive coordination method for promoting consumption of clean energy in a park, which specifically includes the following steps:
step S1: calculating unbalanced electric quantity delta Q of distribution network in parkDN(t) and determining Δ QDN(t) determining whether the value is zero, if yes, ending; otherwise, go to step S2;
step S2: respectively acquiring interaction coordination information sent by a garden distribution network market by using a clean energy main body, an energy storage main body and a flexible load main body;
step S3: respectively calculating the response quantity and the response benefit of the clean energy main body, the energy storage main body and the flexible load main body through the interaction coordination information;
step S4: determining the response priority of the clean energy body, the energy storage body and the flexible load body according to the response benefit from high to low;
step S5: determining an interaction scheme according to the response priority, and calculating the residual unbalance electric quantity delta QDN(t)'；
Step S6: judging residual unbalance electric quantity delta QDN(t)' is zero, if yes, go to step S8, otherwise go to step S7;
step S7: the residual unbalance electric quantity delta Q is generated by the power gridDN(t)' and proceeds to step S8;
step S8: and (5) outputting the clean energy body, the energy storage body and the flexible load body according to the interaction scheme determined in the step S5.
In this embodiment, in step S2, the interactive coordination information includes unbalanced power amount information and campus network guidance power rate information.
In this embodiment, in step S3, the response benefit pr of the clean energy main bodyCEThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
planned electricity prices for the network market in the park during the time period t, cDN(t) is the guide electricity price of the garden distribution network market in the time period t,
and unbalanced electric quantity of the garden distribution network in the time period t.
In this embodiment, in step S3, the response benefit pr of the energy storage main bodyESThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
is the maximum charging price of the energy storage main body, which is determined by the maximum charging times of the energy storage and the planned price of the garden distribution network market,
is the minimum discharge electricity price of the energy storage main body, which is determined by the maximum discharge times of the energy storage and the planned electricity price of the garden distribution network market, cDNAnd (t) the guiding electricity price of the garden distribution network market in the time period t.
In the present embodiment, in step S3, the stepResponse benefit pr of flexible load bodyFLThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
in order to meet the demand electric quantity before the flexible load main body responds in the t period,
is the required electric quantity of the flexible load body after the response in the time period t, epsilon is the elastic index of the flexible load body in the response of the requirement, cDN(t) is the guide electricity price of the garden distribution network market in the time period t,
and (4) distributing the planned electricity price of the network market in the garden in the time period t.
In the present embodiment, the
The calculation of (c) is backward-extrapolated using the following equation:
in the formula (I), the compound is shown in the specification,
and the actual electricity price of the flexible load main body after responding to the garden distribution network market in the time period t is shown.
Preferably, in this embodiment, Δ QDN(t) > 0 represents that the electric quantity of the garden distribution network in the t period is over-demand, and delta QDNAnd (t) < 0 represents that the electric quantity of the garden distribution network in the t period is short of supply and demand.
In this embodiment, in step S3, the response amount is a smaller value of the unbalanced electric quantity and the remaining available electric quantity of each subject.
In this embodiment, the unbalanced electric quantity Δ QDNThe calculation method of (t) is as follows: and adding all loads in the garden distribution network and the unbalanced electric quantity of the distributed power supply.
In this embodiment, the residual unbalance amount Δ QDNThe calculation method of (t)' is as follows: and adding all loads in the garden distribution network and the residual unbalanced electric quantity of the distributed power supply.
In this embodiment, the interaction scheme determined in step S5 is: and sequentially taking all the residual available electric quantity of each priority main body as the electric quantity actually participating in interaction before the unbalanced electric quantity is eliminated according to the response priority of each main body from high to low, thereby determining the final interactive electric quantity scheme of each main body.
The embodiment also provides a system based on the above-mentioned multi-subject interactive coordination method for promoting the consumption of clean energy in a park, which includes a processing module and a storage module, wherein the storage module stores the method instructions of steps S1 to S8, and the processing module is configured to execute the instructions in the storage module.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (9)
1. A multi-subject interactive coordination method for promoting consumption of park clean energy is characterized in that: the method comprises the following steps:
step S1: calculating unbalanced electric quantity delta Q of distribution network in parkDN(t) and determining Δ QDN(t) determining whether the value is zero, if yes, ending; otherwise, go to step S2;
step S2: respectively acquiring interaction coordination information sent by a garden distribution network market by using a clean energy main body, an energy storage main body and a flexible load main body;
step S3: respectively calculating the response quantity and the response benefit of the clean energy main body, the energy storage main body and the flexible load main body through the interaction coordination information;
step S4: determining the response priority of the clean energy body, the energy storage body and the flexible load body according to the response benefit from high to low;
step S5: determining an interaction scheme according to the response priority, and calculating the residual unbalance electric quantity delta QDN(t)'；
Step S6: judging residual unbalance electric quantity delta QDN(t)' is zero, if yes, go to step S8, otherwise go to step S7;
step S7: the residual unbalance electric quantity delta Q is generated by the power gridDN(t)' and proceeds to step S8;
step S8: outputting power to the clean energy main body, the energy storage main body and the flexible load main body according to the interaction scheme determined in the step S5;
the interaction scheme determined in step S5 is: and sequentially taking all the residual available electric quantity of each priority main body as the electric quantity actually participating in interaction before the unbalanced electric quantity is eliminated according to the response priority of each main body from high to low, thereby determining the final interactive electric quantity scheme of each main body.
2. The multi-subject interactive coordination method for facilitating campus clean energy consumption of claim 1, wherein: in step S2, the interactive coordination information includes unbalanced electric quantity information and power rate information for guidance of the campus distribution network.
3. The multi-subject interactive coordination method for facilitating campus clean energy consumption of claim 1, wherein: in step S3, the response benefit pr of the main body of clean energyCEThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
planned electricity prices for the network market in the park during the time period t, cDN(t) guiding electricity price of the garden distribution network market in the t time period，
And unbalanced electric quantity of the garden distribution network in the time period t.
4. The multi-subject interactive coordination method for facilitating campus clean energy consumption of claim 1, wherein: in step S3, the response benefit pr of the energy storage main bodyESThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
is the maximum charging price of the energy storage main body, which is determined by the maximum charging times of the energy storage and the planned price of the garden distribution network market,
is the minimum discharge electricity price of the energy storage main body, which is determined by the maximum discharge times of the energy storage and the planned electricity price of the garden distribution network market, cDNAnd (t) the guiding electricity price of the garden distribution network market in the time period t.
5. The multi-subject interactive coordination method for facilitating campus clean energy consumption of claim 1, wherein: in step S3, the response benefit pr of the flexible load bodyFLThe calculation method of (t) employs the following formula:
in the formula (I), the compound is shown in the specification,
is softThe sex load subject responds to the required electric power before the time t,
is the required electric quantity of the flexible load body after the response in the time period t, epsilon is the elastic index of the flexible load body in the response of the requirement, cDN(t) is the guide electricity price of the garden distribution network market in the time period t,
and (4) distributing the planned electricity price of the network market in the garden in the time period t.
6. The multi-subject interactive coordination method for facilitating campus clean energy consumption of claim 5, wherein: the above-mentioned
The calculation of (c) is backward-extrapolated using the following equation:
in the formula (I), the compound is shown in the specification,
and the actual electricity price of the flexible load main body after responding to the garden distribution network market in the time period t is shown.
7. The multi-subject interactive coordination method for facilitating campus clean energy consumption of claim 1, wherein: in step S3, the response amount is a smaller value of the unbalanced electric quantity and the remaining available electric quantity of each subject.
8. The multi-subject interactive coordination method for facilitating campus clean energy consumption of claim 1, wherein: the unbalanced electric quantity Delta QDNThe calculation method of (t) is as follows: unbalance of all loads and distributed power supplies in a garden distribution networkAdding electric quantity; the residual unbalance electric quantity delta QDNThe calculation method of (t)' is as follows: and adding all loads in the garden distribution network and the residual unbalanced electric quantity of the distributed power supply.
9. A system based on the multi-subject interactive coordination method for facilitating park clean energy consumption of any of claims 1-8, wherein: comprises a processing module and a storage module, wherein the storage module stores the method instructions of the steps S1 to S8, and the processing module is used for executing the instructions in the storage module.
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