CN112381474A - Method for participating in electric power auxiliary peak shaving by user side resource aggregation - Google Patents
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Abstract
The invention discloses a method for aggregating and participating in electric power auxiliary peak shaving by user side resources, which comprises the steps of collecting configuration information of the user side resources, dividing the user side resources into directly adjustable resources and indirectly adjustable resources according to the tightness degree of the user side resources and users, respectively adopting different accounting modes for the two resources, respectively aggregating the two resources in the time interval when the user side resources and the users participate in the electric power auxiliary peak shaving, preferentially calling the directly adjustable resources, and calling the indirectly adjustable resources participating in response with the maximum benefit of an aggregator. According to the invention, the potential of the user side resource participating in the electric power auxiliary peak shaving is fully excavated by dividing the user side resource according to the closeness with the user, so that the flexibility and the economy of the user participating in the electric power auxiliary service are improved, and the enthusiasm of aggregators participating in the market is improved.
Description
Technical Field
The invention belongs to the field of power-assisted peak shaving, and particularly relates to a method for participating in power-assisted peak shaving by user-side resource aggregation.
Background
The demand of people for producing and living electricity continuously rises along with the rapid development of national economic construction, and meanwhile, the production and living electricity is unevenly distributed on a time scale, so that the peak-valley difference of a power grid is increased day by day due to the factors, the traditional power grid is mainly solved by carrying out deep peak shaving transformation on the power supply side or building a peak shaving power plant, and the problems of high cost and low utilization efficiency of power generation capacity are brought by the methods.
In order to solve the problem that the power supply side cannot solve, in recent years, the call sound of user side resources participating in system peak shaving is increasingly large, meanwhile, the rapid development of the smart grid technology is continuously promoted by high-speed developed big data analysis, 5G communication technology and the like, and technical and economic advantages are created for the user side resources participating in grid peak shaving. The invention patent with publication number CN106374516A provides a construction method of a generalized aggregation distributed energy storage system, energy storage units are arranged on a power generation side, a power grid side and a user side, the three sides are communicated through an information communication network, and meanwhile, an electric power trading and operation center senses and controls the energy storage units through a data and information management system; the invention patent with the publication number of CN107143968A provides a peak shaving control method based on an air conditioner aggregation model, which comprehensively considers the profit and the user comfort degree on load aggregation by establishing a single air conditioner load model and an air conditioner group aggregation model and realizes the optimal control of aggregated air conditioner load by taking the minimum scheduling cost as the target; the invention patent with publication number CN109509071A provides a user combination selection method and device, which determines a user combination selection model, so that the cost of the aggregator corresponding to the combination can be less than the preset cost, and the technical problem of selecting the user combination participating in the demand response on the premise of meeting the peak shaving capacity is solved; the invention patent with the publication number of CN110112767A provides a load source optimization control method for the peak shaving of a wide area polymorphic demand side load participation system, which optimizes a load source interaction control method for the peak shaving of the wide area polymorphic demand side load participation system by constructing a day-ahead peak shaving model and a day-in real-time peak shaving model of the wide area polymorphic demand side load participation system, and solves to obtain a day-ahead and day-in real-time peak shaving plan.
Most of the prior art is to aggregate a certain user-side resource according to the operation and peak shaving characteristics of the resource and auxiliary peak shaving information issued by a scheduling department, on one hand, the user-side resource faced by an aggregator each time the aggregator participates in auxiliary peak shaving is uncertain, the aggregator needs to bear a part of risks, on the other hand, the willingness of part of users to repeatedly participate in response is not high, and the aggregator is willing to trust a part of response affairs to a third party for obtaining stable benefits. Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
Aiming at the improved part in the prior art, the invention provides a method for participating in power auxiliary peak shaving by user side resource aggregation, which improves the flexibility of resource combination by classifying user side resources and mentioning the response rights of a part of user side resources to the aggregation provider level, and simultaneously performs aggregation regulation and control on adjustable resources of different users, fully excavates the response potential of the user side resources and further improves the feasibility and the economical efficiency of participating in power auxiliary peak shaving by the user side resources.
In order to achieve the purpose, the technical scheme of the invention is as follows: a method for participating in power auxiliary peak shaving by user side resource aggregation is suitable for the condition that the user side resources of industrial users or parks participate in power grid peak shaving by aggregation, and comprises the following steps:
s1: collecting configuration information of a user side resource, wherein the configuration information refers to set information of the user side resource and comprises owner information, capacity, unit parameters and the like;
s2: dividing the resources into directly adjustable resources and indirectly adjustable resources according to the degree of tightness between the resources at the user side and the user;
s3: after receiving the peak shaving information, aggregating the existing user side resources according to the direct/indirect adjustable resource classification, the configuration information and the real-time information, preferentially calling the direct adjustable resources, and calling the indirect adjustable resources with the maximum self benefit as a target; wherein the real-time information includes: peak regulation information issued by a power grid dispatching department, real-time power of user side resources, start-stop states and the like.
The method for the user side resource aggregation to participate in the electric power auxiliary peak shaving is characterized in that the user side resources are mainly divided into three types: power generation facility, energy storage device, adjustable load. The power generation device comprises a self-contained power plant, a combined cooling heating and power supply unit, a distributed photovoltaic or wind turbine unit and the like; the energy storage device comprises an electric energy storage device, a heating water tank, a gas-electricity conversion device, a gas storage device and the like; the adjustable load comprises a transferable load, an interruptible load and a reducible load.
The method for the user side resource aggregation to participate in the power auxiliary peak regulation is characterized in that the directly adjustable resource refers to a resource which can be automatically called within a certain time range by an aggregator in advance in contract with a user, and compensation cost generated by calling the resource is accounted before calling; the indirectly adjustable resource refers to a resource which can be called only after the user participates in the peak shaving because the aggregator needs to issue information to the user before participating in the peak shaving, and compensation cost generated by calling the resource is accounted after calling and is related to the information issued by the aggregator in real time.
The method for dividing the directly/indirectly adjustable resources comprises the following steps:
(1) for the power generation devices, all the power generation devices are considered as indirect adjustable resources because the start and the stop of the power generation devices require user intervention;
(2) aiming at the energy storage device, according to the historical load record and the production/power utilization plan of the user, determining the time period required by the energy storage device for compensating the power utilization requirement in the peak power utilization period of the user, and handing over the rest time periods to be managed by an aggregator, wherein the rest time periods are called energy storage direct-adjusting time periods, and the energy storage device in the energy storage direct-adjusting time periods is directly adjustable resources; in addition, the aggregator needs to ensure that the energy storage device can meet the compensation requirement of the user before the next required time period begins, and the energy storage state at the moment can be obtained by negotiation of the two parties.
(3) For the adjustable load, the transferable load is considered as an indirect adjustable resource because the transferable load is closely related to the electricity utilization behavior of the user; in addition, part of reducible load is relevant to the production benefit of the user, the direct calling can generate benefit loss, the benefit loss is also considered as indirect adjustable resource, and the specific benefit loss is calculated as compensation after calling; the interruptible load and part of reducible loads (such as fans, lighting equipment, air conditioners and the like) which are irrelevant to the production benefit are considered as directly adjustable resources, and the adjustment time period and the adjustment level (the adjusted power range, the operation mode and the like) can be agreed with the user in advance, and response is carried out through the intelligent terminal equipment when the adjustment is called.
The division of the above time period is in a minimum unit of 15 minutes.
The method for participating in power-assisted peak regulation by user-side resource aggregation is characterized by comprising the following steps: s3 specifically includes the following steps:
s31: and the aggregator receives the peak shaving information sent by the power grid dispatching department, determines the peak shaving time period and collects the real-time information of the user.
S32: preferentially calling the directly adjustable resources based on the directly/indirectly adjustable resource classification result obtained in the step S2; calculating the adjustable capacity of each resource based on the configuration information and the real-time information of the directly adjustable resource, and clustering by taking the calling start time, the adjustable time interval length and the resource type as indexes; and the aggregator calls the directly adjustable resource according to the clustering result and the calling starting time under the condition of meeting various load constraints.
S33: the aggregator sends information to the user with the indirectly adjustable resource according to the peak shaving information, the user reports expected participation indirectly adjustable resource information, and the aggregator calculates response compensation cost, wherein the response compensation cost comprises user electricity utilization satisfaction compensation cost and response cost; and clustering by using the calling start time, the adjustable time interval length, the resource type and the response compensation cost as indexes by the aggregator, and calling the indirectly adjustable resource according to the clustering result by taking the maximum self benefit as a target under the condition of meeting various constraint conditions.
Has the advantages that: according to the method, the user side resources are divided into the directly adjustable resources and the indirectly adjustable resources, the directly adjustable resources are preferably called when the user side resources participate in the electric power auxiliary peak shaving, and the indirectly adjustable resources are called with the maximum self benefit as a target. On one hand, the aggregator purchases the calling authority of the directly adjustable resources at a fixed price by signing a contract in advance, and the response right of the user side is referred to the aggregator level, so that the aggregator is favorable for realizing aggregation and calling in time and flexibly, on the other hand, the inconvenience that the user participates in response repeatedly is solved by signing the contract in advance, and meanwhile, the enthusiasm of the aggregator participating in the auxiliary service market is improved.
Drawings
Fig. 1 is a block diagram of the steps of a method of the present invention for participating in power assisted peak shaving for customer-side resource aggregation.
Fig. 2 is a flowchart of a method for participating in power-assisted peak shaving in user-side resource aggregation according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples.
The invention discloses a method for aggregating and participating in power auxiliary peak shaving by user side resources, which is suitable for aggregating and participating in power grid peak shaving by user side resources of industrial users or parks.
As shown in fig. 1 and 2, in order to achieve the above purpose, the technical solution of the present invention is: a method for participating in power-assisted peak shaving in user-side resource aggregation comprises the following steps:
s1: collecting user side resource information including configuration information and real-time information, taking a certain park as an example, the configuration information includes enterprise information corresponding to each resource, adjustable capacity, self-prepared machine set parameters of the enterprise, enterprise production/power utilization plan, whether the corresponding resource has multiple operation modes, and the like;
s2: and dividing the resources into directly adjustable resources and indirectly adjustable resources according to the closeness degree of the user side resources and the user, wherein the division aiming at the calling time period takes 15 minutes as a minimum unit.
The specific division standard of the calling time period is as follows:
(1) aiming at power generation devices, such as self-contained power plants, combined cooling heating and power units, distributed photovoltaic or wind power units and the like, the starting and stopping of the power generation devices need user intervention, and the resources are considered as indirect adjustable resources.
(2) Aiming at energy storage devices, such as an electric energy storage device, a heating water tank, a gas-electricity conversion device and an air storage device thereof, determining a time period when the energy storage device is required by an enterprise to compensate the electricity demand in the peak electricity utilization period according to the historical load record and the production/electricity utilization plan of the enterprise, and handing over the rest time periods to a aggregator for management, wherein the rest time periods are called energy storage direct regulation time periods, and the energy storage devices in the energy storage direct regulation time periods are directly adjustable resources; in addition, the aggregator needs to ensure that the energy storage device can meet the compensation requirement of the user before the next required time period begins, and the energy storage state at the moment can be obtained by negotiation of the two parties.
(3) For the adjustable load, the transferable load is considered as an indirect adjustable resource because the transferable load is closely related to the power utilization behavior of the enterprise; in addition, part of the reducible load is related to enterprise production benefits, benefit loss can be generated by direct calling, the benefit loss is also considered as indirect adjustable resources, and the specific benefit loss is calculated as compensation after calling; interruptible loads and partly reducible loads that are not related to production efficiency are considered directly adjustable resources, such as the life load in the enterprise's living area: the fan, lighting equipment, air conditioner and the like which operate in multiple modes can agree with an enterprise in advance to adjust the time period and the adjusting level: the adjusted power range, the feasible operation mode and the like are controlled by the intelligent terminal device to realize response during calling.
S3: after receiving the peak shaving information, the aggregator aggregates the user side resources among different existing enterprises according to the direct/indirect adjustable resource classification, the configuration information and the real-time information, preferentially calls the direct adjustable resources, and then calls the indirect adjustable resources with the maximum self benefit as the target.
The S3 specifically includes the following steps:
s31: the aggregator receives peak shaving information sent by a power grid dispatching department, determines a peak shaving time period, and collects real-time information of an enterprise: real-time power, start-stop state and the like of user side resources;
s32: and preferentially calling the directly adjustable resource based on the direct/indirect adjustable resource classification result obtained in the step S2. Calculating the adjustable capacity of each resource based on the configuration information and the real-time information of the directly adjustable resource, and clustering by taking the calling start time, the adjustable time interval length and the resource type as indexes; and sequentially calling the directly adjustable resources by the aggregators according to the clustering result and the sequence of the calling starting time under the condition of meeting various load constraints.
S33: the aggregator sends information to an enterprise owning the indirectly adjustable resources according to the peak shaving information, the enterprise reports expected participation indirectly adjustable resource information, and the aggregator calculates response compensation cost, wherein the response compensation cost comprises user electricity utilization satisfaction compensation cost and response cost; and clustering by using the calling start time, the adjustable time interval length, the resource type and the response compensation cost as indexes by the aggregator, and calling the indirect adjustable resources in sequence according to the sequence of the calling start time under the condition of meeting various constraint conditions by taking the maximum self benefit as a target according to the clustering result.
The above constraint conditions are: for a power generation device, the output constraint of each device needs to be considered, and if the thermal power generating unit is used, the unit climbing rate constraint also needs to be considered; for an energy storage device, energy storage charge and discharge constraints need to be considered; for adjustable loads, the transfer time constraints of transferable loads, the interruption time constraints of interruptible loads, and the constraints of reducible loads with respect to adjustment time, adjustment power need to be considered.
The form of compensation made by the aggregator for different resources is as follows:
aiming at the divided directly adjustable resources: and the part of the energy storage and the enterprise living load in the energy storage direct adjustment time period can be adjusted, and the aggregator calls the compensation cost generated by the resources through accounting and makes a contract with the enterprise in advance, wherein the compensation cost is a fixed cost. During contract fulfillment, the aggregator can make calls to the adjustable resources of the enterprise by itself under agreed conditions without advance notice.
Aiming at the divided indirect adjustable resources: such as a power generation device, an energy storage device necessary for an enterprise, a production load of the enterprise and the like, an aggregator needs to issue information to a user before participating in peak shaving, and attracts the user to participate in power auxiliary peak shaving independently in the forms of price incentive, cost compensation and the like, compensation cost generated by calling resources is accounted after calling, and the compensation cost can be determined by compensation price issued by the aggregator in real time and income after response.
The above is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, modifications or equivalent substitutions of the technical solution of the present invention without inventive work may be made without departing from the scope of the present invention.
Claims (5)
1. A method for participating in power-assisted peak shaving by user-side resource aggregation is characterized by comprising the following steps:
s1: collecting configuration information of user side resources, wherein the configuration information comprises owner information, capacity and unit parameters;
s2: dividing the user side resources into directly adjustable resources and indirectly adjustable resources according to the tightness degree of the user side resources and the user;
s3: after receiving the peak shaving information, aggregating the existing user side resources according to the direct/indirect adjustable resource classification, the configuration information and the real-time information, preferentially calling the direct adjustable resources, and calling the indirect adjustable resources with the maximum self benefit as a target; wherein the real-time information includes: peak regulation information, real-time power of user side resources and start-stop states issued by a power grid dispatching department.
2. The method of claim 1, wherein the method comprises: the directly adjustable resource refers to a resource which can be automatically called within a certain time range by an aggregator who can sign a contract with a user in advance, and compensation cost generated by calling the resource is accounted before calling.
3. The method of claim 1, wherein the method comprises: the indirectly adjustable resource refers to a resource which can be called only after the user participates in the peak shaving because the aggregator needs to issue information to the user before participating in the peak shaving, and compensation cost generated by calling the resource is accounted after calling and is related to the information issued by the aggregator in real time.
4. The method of claim 1, wherein the method comprises: the S3 includes the following steps:
s31: the aggregator receives peak shaving information sent by a power grid dispatching department, determines a peak shaving time period and collects real-time information of users;
s32: preferentially calling the directly adjustable resources based on the directly/indirectly adjustable resource classification result obtained in the step S2; calculating the adjustable capacity of each resource based on the configuration information and the real-time information of the directly adjustable resource, and clustering by taking the calling start time, the adjustable time interval length and the resource type as indexes; the aggregator calls the directly adjustable resource under the condition of meeting various load constraints according to the clustering result and the calling starting time;
s33: the aggregator sends information to the user with the indirectly adjustable resource according to the peak shaving information, the user reports expected participation indirectly adjustable resource information, and the aggregator calculates response compensation cost, wherein the response compensation cost comprises user electricity utilization satisfaction compensation cost and response cost; and clustering by using the calling start time, the adjustable time interval length, the resource type and the response compensation cost as indexes by the aggregator, and calling the indirectly adjustable resource according to the clustering result by taking the maximum self benefit as a target under the condition of meeting various constraint conditions.
5. The method of claim 1, wherein the method comprises: the user side resources are mainly divided into three categories: power generation facility, energy storage device, adjustable load.
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