CN112184009A - Method and device for clearing paid reactive auxiliary service and storage medium - Google Patents

Method and device for clearing paid reactive auxiliary service and storage medium Download PDF

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Publication number
CN112184009A
CN112184009A CN202011031771.9A CN202011031771A CN112184009A CN 112184009 A CN112184009 A CN 112184009A CN 202011031771 A CN202011031771 A CN 202011031771A CN 112184009 A CN112184009 A CN 112184009A
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clearing
partition
reactive
reference price
unit
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CN112184009B (en
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祁鑫
邵鹏
宁波
蒙金有
孙小湘
杨慧彪
王运
李婷
郭少青
匡洪辉
张德亮
薛艳军
翟武悝
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Beijing Qu Creative Technology Co ltd
State Grid Ningxia Electric Power Co Ltd
Electric Power Research Institute of State Grid Ningxia Electric Power Co Ltd
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Beijing Qu Creative Technology Co ltd
State Grid Ningxia Electric Power Co Ltd
Electric Power Research Institute of State Grid Ningxia Electric Power Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
    • G06Q10/06315—Needs-based resource requirements planning or analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/06—Buying, selling or leasing transactions
    • G06Q30/0601—Electronic shopping [e-shopping]
    • G06Q30/0611—Request for offers or quotes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S50/00—Market activities related to the operation of systems integrating technologies related to power network operation or related to communication or information technologies
    • Y04S50/10—Energy trading, including energy flowing from end-user application to grid

Abstract

The invention relates to a method, a device and a storage medium for clearing out compensated reactive auxiliary service.A reactive voltage control subarea is determined by analyzing based on a whole power system, the reactive balance in each subarea is focused, and the clear-out reference price of the compensated reactive auxiliary service in the subarea is calculated; and determining a reasonable reference price of the generator set paid reactive power auxiliary service quotation by counting the quotations of the generator sets of the same type in the whole network range. Whether the comparison of the partition clearing reference price and the reference price of the same type of generator set is within the preset range or not is carried out, the rationality of the partition clearing price is judged, so that the clearing reference price is comprehensively determined, the unit type difference and the partition balancing requirements are considered, the requirement of reactive voltage regulation and control of each partition is met while the enthusiasm of the generator set participating in the compensated reactive auxiliary service is improved, and the clearing price is more reasonable.

Description

Method and device for clearing paid reactive auxiliary service and storage medium
Technical Field
The invention belongs to the technical field of power distribution, and particularly relates to a paid reactive power auxiliary service clearing method, a paid reactive power auxiliary service clearing device and a storage medium.
Background
In the production and operation process of the generator set, reactive power needs to be generated in addition to active power so as to be matched with a power grid for voltage regulation and control. The reactive power generated can be divided into basic reactive auxiliary service and compensated reactive auxiliary service. The basic reactive auxiliary service refers to reactive power which can be provided by the generator set within the range of design parameters of the generator set; reactive power that is emitted beyond the range of the basic reactive auxiliary service is called paid reactive auxiliary service. The influence of basic reactive auxiliary service on power generation equipment is small, the basic reactive auxiliary service belongs to an accessory product for generating active power in normal power generation, and the production cost can be regarded as 0; when the reactive power auxiliary service range exceeds the basic reactive power auxiliary service range and the compensated reactive power auxiliary service needs to be provided, the large influence is generated on the power generation equipment, the production cost is not negligible, and the compensation corresponding to the power generation party is required when the network calls the compensated reactive power auxiliary service of the generator set.
However, because the cost difference of the compensated reactive auxiliary service of different generator sets is large, how to reasonably design a clearing method and improve the participation enthusiasm of the compensated reactive auxiliary service of the generator sets becomes an important content of the market organization of the compensated reactive auxiliary service.
The clearing mode of the conventional reactive power compensation auxiliary service comprises three steps of organizing declaration, drawing a clearing accumulation graph and determining clearing price, and the method does not consider the difference of the cost of reactive power compensation service of different generator sets, uniformly clears all the generator sets, and easily contusions smaller generator sets of an installation machine to participate in the positivity of the reactive power compensation auxiliary service; and the position of the generator set in the power grid is not considered, and the imbalance of reactive voltage regulation of each partition is easily caused by the winning generator set obtained by clearing the total demand of the system paid reactive auxiliary service because the paid reactive auxiliary service demands of different areas are different.
Disclosure of Invention
In order to solve the problems of low positivity and unbalance of partition reactive voltage regulation and control of the generator set participating in the compensated reactive auxiliary service in the prior art, the invention provides a method, a device and a storage medium for clearing out the compensated reactive auxiliary service, which have the characteristics of more reasonable generator set scheduling, more balanced partitions and the like.
The technical scheme adopted by the invention is as follows:
a paid reactive power auxiliary service clearing method comprises the following steps:
determining reactive voltage regulation and control partitioning of the generator set based on a preset partitioning judgment standard;
classifying all generator sets participating in the paid reactive power auxiliary service based on a preset grouping standard;
determining a marginal unit of the partition based on the paid auxiliary service demand of the partition, and taking the quoted price of the marginal unit as a partition clearing reference price;
determining a mode of quotes of the generator sets of the same type as the marginal unit as a unit clearing reference price based on a set of quotes of the generator sets of the same type;
and if the difference value between the unit clearing reference price of the marginal unit of any partition and the partition clearing reference price is within a preset deviation allowance, clearing by using the partition clearing reference price of the partition.
Further, if the difference between the unit clearing reference price of the marginal unit of any one sub-zone and the sub-zone clearing reference price is outside a preset deviation allowance, the method further comprises the following steps:
and sequentially taking the generator sets with the quotation in the subareas higher than the subarea clearing reference price as new marginal generator sets to judge the preset deviation permission margin until the quotation of the generator sets meeting the preset deviation permission margin is found out to clear.
Further, the determining to perform reactive voltage regulation and control partitioning on the generator set based on the preset partitioning judgment standard includes:
based on Δ Vg＝-Lgi(Lgi TLgi)-1ΔViDetermining the influence degree of the voltage change of a node where the generator set is located on the voltage change of a power grid voltage pivot point;
based on
Figure BDA0002703927800000021
Determining the zone where the generator set is located according to the judgment condition;
wherein, is Δ Vg、ΔViRespectively the voltage variation of the node where the generator set g is located and the grid voltage pivot point i, LgiFor a reactive voltage transfer distribution vector between two nodes, Lgi T、(Lgi TLgi)-1Respectively the transpose and the inversion of the vector,
Figure BDA0002703927800000031
is the correlation coefficient between the voltage of the node where the generator set g is located and the voltage of the pivot point i,
Figure BDA0002703927800000032
γsetand dividing a limit value for the partition, if the correlation coefficient exceeds the limit value, determining that the generator set is in the area where the pivot point is located, otherwise, determining that the generator set is not in the area.
Further, still include: and if any generator set meets the judgment conditions of the plurality of pivot points, dividing the generator set into the partition where the pivot point with the largest correlation coefficient is located according to the size of the correlation coefficient.
Further, the classifying all generator sets participating in the reactive power compensation auxiliary service based on the preset grouping criteria specifically includes:
and classifying the generator sets participating in the paid reactive auxiliary service transaction according to the installed capacity.
Further, the determining, based on the offer set of the generator sets of the same type, a mode of offers of the generator sets of the same type as the marginal set as a set clearing reference price specifically includes:
determining available set lambda of paid reactive auxiliary service quotations declared by the same type of generator setG＝{λg1,λg2λgnIn which λ isg1、λg2、…λgnQuotations of generator sets g1, g2 and … gn which belong to the same type respectively;
based on
Figure BDA0002703927800000033
Determining a unit clearing reference value, wherein the set lambdaGMode of middle element
Figure BDA0002703927800000034
I.e. the unit clearing reference value, Mod (lambda)G) Is a calculated function of the mode of the set.
Further, the determining of the preset deviation allowance of the difference value between the unit clearing reference price and the partition clearing reference price comprises:
the unit clearing reference price and the partition clearing reference price meet the requirement
Figure BDA0002703927800000035
Wherein
Figure BDA0002703927800000036
The reference price is cleared out for the subarea,
Figure BDA0002703927800000037
and (4) clearing a reference price for the unit,% is a preset deviation allowance.
Further, the value of the preset deviation allowance% is 3% -5%.
The invention relates to a paid reactive auxiliary service clearing device in a real-time mode, which comprises
The partition module is used for determining reactive voltage regulation and control partition of the generator set based on a preset partition judgment standard;
the unit classification module is used for classifying all the generator sets participating in the paid reactive auxiliary service based on a preset grouping standard;
the partition clearing reference price determining module is used for determining a marginal unit of the partition based on the paid auxiliary service demand of the partition and taking the quoted price of the marginal unit as a partition clearing reference price;
the unit clearing reference price determining module is used for determining the mode of the quoted prices of the generator sets of the same type as the marginal unit as the unit clearing reference price based on the quoted price set of the generator sets of the same type; and
and the clearing reference price determining module is used for clearing the unit clearing reference price of the marginal unit of any partition by the partition clearing reference price of the partition if the difference value of the unit clearing reference price of the marginal unit of the partition and the partition clearing reference price is within a preset deviation allowance.
A storage medium according to an embodiment of the present invention stores therein a computer program for executing at least the paid reactive assistance services clearing method as described above.
The invention has the beneficial effects that: determining reactive voltage control partitions based on the analysis of the whole power system, focusing on reactive balance in each partition, and calculating a clear reference price of the compensated reactive auxiliary service in the partition; and determining a reasonable reference price of the generator set paid reactive power auxiliary service quotation by counting the quotations of the generator sets of the same type in the whole network range. Whether the comparison of the partition clearing reference price and the reference price of the same type of generator set is within the preset range or not is carried out, the rationality of the partition clearing price is judged, so that the clearing reference price is comprehensively determined, the unit type difference and the partition balancing requirements are considered, the requirement of reactive voltage regulation and control of each partition is met while the enthusiasm of the generator set participating in the compensated reactive auxiliary service is improved, and the clearing price is more reasonable.
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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 flow diagram of a rollout mode for providing reactive compensation assistance service in the prior art, according to an example embodiment;
FIG. 2 is a schematic diagram of a prior art purge accumulation provided in accordance with an exemplary embodiment;
FIG. 3 is a flow diagram of a method for paid reactive assistance service clearing provided in accordance with an exemplary embodiment;
FIG. 4 is a block diagram of a compensated reactive auxiliary services clearing apparatus provided in accordance with an exemplary embodiment;
FIG. 5 is a schematic diagram of a storage medium provided in accordance with an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 and 2, in the actual operation process of the power grid, when the basic reactive auxiliary service of the generator set cannot meet the requirement of the power grid voltage regulation, the compensated reactive auxiliary service needs to be called. In the electric power market environment, basic reactive auxiliary service of the generator set is used as mandatory content of grid-connected service of the generator set, and all the generator sets need to be provided according to the requirements of the grid-connected scheduling protocol of the generator sets; and the paid reactive auxiliary service adopts a marketized trading mechanism to determine the clearing price. In the actual operation process, when the compensatory reactive auxiliary service of the generator set needs to be called, a power grid enterprise has to pay corresponding cost. WhileThe clearing mode of the traditional compensated reactive auxiliary service is shown by referring to fig. 1, and comprises three steps of organizing declaration, drawing clearing accumulation graph and determining clearing price, each power generation enterprise declares the compensated reactive auxiliary service declaration reactive power and unit reactive power quotation according to the actual working condition of the power generation enterprise, and the power of the compensated reactive auxiliary service declared by the power generation unit i is recorded as
Figure BDA0002703927800000051
Unit reactive power quoted as
Figure BDA0002703927800000052
Drawing a paid reactive power auxiliary service clearing accumulated graph, wherein the abscissa of the graph is the generator sets which are sequentially ordered from low to high according to the unit reactive power quotation, and the ordinate of the graph is the paid reactive power declared by the generator sets and accumulated according to the numerical value of the paid reactive power.
And determining the demand of the system for the reactive auxiliary service for the compensation according to the operation mode of the system, and marking the corresponding position of the ordinate of the clearing cumulative graph, wherein the generator set intersected with the demand becomes a marginal set of the reactive auxiliary service for the compensation, and the declared price is the clearing price. In the actual execution process, the dispatcher calls the paid reactive auxiliary service of each generator set according to the actual operation mode of the power grid and settles the account according to the clearing price.
The method for clearing the compensated reactive auxiliary service has the following two problems:
1) the difference of the cost of the reactive auxiliary service of the generator set is mainly caused by the type of the generator set, wherein the most important factor is the generator assembling machine. The clearing method does not consider the difference of the cost of the compensated reactive power service of different generator sets, and all the generator sets are cleared uniformly, so that the enthusiasm of smaller generator sets in the installation machine to participate in the compensated reactive power auxiliary service is easily contused;
2) "partition balancing" is the basic principle of reactive voltage control, and the position of the generator set in the power grid is not considered in the clearing method. The compensated reactive auxiliary service requirements of different regions are different, and the winning power generator set obtained by clearing the total compensated reactive auxiliary service requirements of the system cannot meet the requirement of reactive voltage regulation and control of each subarea.
Therefore, the invention provides a paid reactive power auxiliary service clearing method considering the unit type difference and the partition balance requirement, and aims to improve the participation enthusiasm of the generator set in the paid reactive power auxiliary service.
Referring to fig. 3, an embodiment of the present invention provides a method for clearing out compensated reactive power auxiliary service, including the following steps:
101. determining reactive voltage regulation and control partitioning of the generator set based on a preset partitioning judgment standard;
102. classifying all generator sets participating in the paid reactive power auxiliary service based on a preset grouping standard;
103. determining a marginal unit of the partition based on the paid auxiliary service demand of the partition, and taking the quoted price of the marginal unit as a partition clearing reference price;
104. determining the mode of the quotations of the generator sets of the same type as the marginal generator set as a set clearing reference price based on the quotation set of the generator sets of the same type;
105. and if the difference value between the unit clearing reference price of the marginal unit of any one subarea and the subarea clearing reference price is within the preset deviation allowance, clearing by using the subarea clearing reference price of the subarea.
Specifically, the reactive voltage of the power grid is regulated and controlled in a subarea, and the generator set regulates the reactive power of the power grid, so that the voltage of the accessed node is directly changed, and the voltage of other nodes in the power grid is influenced. The standard of the reactive voltage regulation and control subarea of the power grid is as follows: the influence degree of the voltage change of the node where the generator set is located on the voltage change of the power grid voltage pivot point is divided according to the influence degree; the cost of providing the compensatory reactive auxiliary service is different among different types of generator sets, wherein the generator assembling machine is the most main factor influencing the cost of the generator assembling machine so as to carry out zoning;
the generator set type is divided, the cost of providing the paid and reactive auxiliary service is different for different types of generator sets, wherein the generator assembling machine is the most main factor influencing the cost of the generator assembling machine, so that the generator sets participating in the paid and reactive auxiliary service transaction can be classified according to the installed capacity;
the organization declares that each power generation enterprise declares the maximum power of the compensated reactive auxiliary service and the price of the compensated reactive power in unit, which can be provided by each generator set;
and drawing a partition clearing accumulated graph, wherein the difference from the traditional mode is that the system clearing accumulated graph is not drawn uniformly, but the partition clearing accumulated graph is drawn according to the generator sets of the partitions where the pivot points are located. The abscissa is the generator sets in the subarea which are sequentially sorted from low to high according to the unit reactive power quoted, and the ordinate is the compensated reactive power declared by the generator sets and is accumulated according to the numerical value. And positioning the corresponding marginal unit of the compensated reactive auxiliary service according to the compensated reactive auxiliary service requirement of the subarea. The declared price of the marginal unit is recorded as the clear reference price of the compensated reactive auxiliary service of the subarea;
calculating the reference price of the generator sets of different types, clearing the generator sets of different types in different areas, and determining the reasonable reference price of the generator set paid reactive power auxiliary service quotation by counting the quotations of the generator sets of the same type in the whole network range. By comparing the partition clearing reference price with the generator set reference price of the same type, the rationality of the partition clearing price is judged, the participation enthusiasm of the compensated reactive auxiliary service of the generator set can be improved, and the partition regulation and control are more balanced.
As a possible implementation manner of the above embodiment, the relationship between the voltage change of the generator set access point and the voltage change of the grid voltage pivot point may be expressed as: Δ Vg＝-Lgi(Lgi TLgi)-1ΔVi；
Wherein, is Δ Vg、ΔViRespectively the voltage variation of the node where the generator set g is located and the grid voltage pivot point i, LgiThe vector is a reactive voltage transfer distribution vector between two nodes, is determined by a power grid network frame, belongs to basic parameters of a system, is not described again in the invention, and can be calculated according to actual needs by a person skilled in the art; l isgi T、(Lgi TLgi)-1Transpose and invert the vector, respectively; -Lgi(Lgi TLgi)-1Namely, the influence degree of the voltage regulation of the node where the generator set is located on the voltage pivot point of the power grid is determined, the numerical value of the influence degree is used as a partition basis for carrying out the partition of the reactive voltage regulation of the power grid, and the judgment conditions are as follows:
Figure BDA0002703927800000081
is the correlation coefficient between the voltage of the node where the generator set g is located and the voltage of the pivot point i, i.e.
Figure BDA0002703927800000082
γsetThe partition limit value can be set according to a radial reactive voltage control area with the 220KV station as a root node, and the specific implementation process can be set according to a partition control method in the prior art. If the correlation coefficient exceeds the limit value, the generator set is indicated to be in the area where the center point is located, otherwise, the generator set is not in the area. When a certain generator set simultaneously meets the judgment conditions of a plurality of central point subareas, the generator set is divided into the subareas where the central points with the maximum correlation coefficients are located according to the numerical value of the generator set.
The quotation of the compensated reactive auxiliary service of the generator set of the same type is comparable, and a set lambda for the available quotation of the compensated reactive auxiliary service declared by a certain type G of generator set is regulatedGRepresents, i.e.: lambda [ alpha ]G＝{λg1,λg2λgn}
Wherein λ isg1、λg2、…λgnRespectively, offers for gensets g1, g2, … gn belonging to this type.
Then specify the set lambdaGMode of middle element
Figure BDA0002703927800000083
A reference price for paid reactive auxiliary service for this type of generator set, where the mode can be expressed as:
Figure BDA0002703927800000084
wherein Mod (lambda)G) The specific calculation method is a common statistical method, and is not described herein again;
for any partition, if the reference price between the marginal unit and the type generator set in which the unit is located meets the following conditions:
Figure BDA0002703927800000085
wherein
Figure BDA0002703927800000086
For the paid reactive auxiliary service reference by the zone,
Figure BDA0002703927800000087
and clearing the generator set reference price of the type corresponding to the marginal generator set in the accumulative graph for the subarea,% is deviation allowance, and is generally 3% -5%.
If the compensated reactive auxiliary service reference price of a certain partition and the generator set reference price of the type corresponding to the marginal unit meet the limiting conditions, the marginal unit of the partition is reasonable in price quotation and can be cleared according to the reference price; otherwise, the marginal unit of the partition is unreasonable in price quotation, the generator set is rejected, the generator set which is arranged at the next position of the primary marginal unit in the partition in sequence from low to high in price quotation is selected as the marginal unit, the inspection is continued according to a limited condition until the generator set meeting the requirement of the limited condition is found, and the clear price is determined.
Based on the same design concept, the embodiment of the invention shown in fig. 4 also provides a paid reactive power auxiliary service clearing device, which comprises
The partition module is used for determining reactive voltage regulation and control partition of the generator set based on a preset partition judgment standard;
the unit classification module is used for classifying all the generator sets participating in the paid reactive auxiliary service based on a preset grouping standard;
the system comprises a partition clearing reference price determining module, a partition clearing reference price determining module and a partition clearing reference price determining module, wherein the partition clearing reference price determining module is used for determining a marginal unit of a partition based on the paid auxiliary service demand of the partition and taking the quoted price of the marginal unit as a partition clearing reference price;
the unit clearing reference price determining module is used for determining the mode of the quotations of the generator sets of the same type as the marginal unit based on the quotation set of the generator sets of the same type as the marginal unit as the unit clearing reference price; and
and the clearing reference price determining module is used for clearing the machine set clearing reference price of the marginal machine set of any one subarea according to the subarea clearing reference price if the difference value of the machine set clearing reference price of the marginal machine set of any subarea and the subarea clearing reference price is within a preset deviation allowance.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
In order to adapt to the paid reactive power assisting service clearing device provided by the embodiment of the present invention, referring to fig. 5, the embodiment of the present invention further provides a storage medium for use by the paid reactive power assisting service clearing device, wherein the storage medium stores therein a computer program at least for executing the paid reactive power assisting service clearing method as described above.
The storage medium is used for storing a computer program, and the computer program is at least used for executing the paid reactive auxiliary service clearing method of any one of the above items; the processor is used for calling and executing the computer program in the memory, and the storage medium is not limited to a floppy disk, a hard disk and a flash disk, but other memories can be adopted, so that the invention is not limited herein.
The method, the device and the storage medium for clearing out the compensated reactive auxiliary service provided by the embodiment of the invention fully consider the type difference of the generator set and the requirement of partition balance, aim to improve the participation enthusiasm of the generator set in the compensated reactive auxiliary service, and provide the method for clearing out the compensated reactive auxiliary service considering the type difference of the generator set and the requirement of partition balance, so that the requirement of reactive voltage regulation and control of each partition can be met while the enthusiasm of the generator set in the compensated reactive auxiliary service is participated to reduce the pressure of a power grid.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A paid reactive power auxiliary service clearing method is characterized by comprising the following steps:
determining reactive voltage regulation and control partitioning of the generator set based on a preset partitioning judgment standard;
classifying all generator sets participating in the paid reactive power auxiliary service based on a preset grouping standard;
determining a marginal unit of the partition based on the paid auxiliary service demand of the partition, and taking the quoted price of the marginal unit as a partition clearing reference price;
determining a mode of quotes of the generator sets of the same type as the marginal unit as a unit clearing reference price based on a set of quotes of the generator sets of the same type;
and if the difference value between the unit clearing reference price of the marginal unit of any partition and the partition clearing reference price is within a preset deviation allowance, clearing by using the partition clearing reference price of the partition.
2. A reactive power compensation service clearing method according to claim 1, wherein if the difference between the unit clearing reference price of the marginal unit of any one zone and the zone clearing reference price is outside a preset deviation allowance, further comprising:
and sequentially taking the generator sets with the quotation in the subareas higher than the subarea clearing reference price as new marginal generator sets to judge the preset deviation permission margin until the quotation of the generator sets meeting the preset deviation permission margin is found out to clear.
3. A reactive power assistance service clearing method for compensation according to claim 2 wherein said determining reactive voltage regulation zoning the generator set based on preset zoning criteria comprises:
based on Δ Vg＝-Lgi(Lgi TLgi)-1ΔViDetermining the influence degree of the voltage change of a node where the generator set is located on the voltage change of a power grid voltage pivot point;
based on
Figure FDA0002703927790000011
Determining the zone where the generator set is located according to the judgment condition;
wherein, is Δ Vg、ΔViRespectively a node where the generator set g is positioned andvoltage change, L, of the network voltage center point igiFor a reactive voltage transfer distribution vector between two nodes, Lgi T、(Lgi TLgi)-1Respectively the transpose and the inversion of the vector,
Figure FDA0002703927790000012
is the correlation coefficient between the voltage of the node where the generator set g is located and the voltage of the pivot point i,
Figure FDA0002703927790000013
γsetand dividing a limit value for the partition, if the correlation coefficient exceeds the limit value, determining that the generator set is in the area where the pivot point is located, otherwise, determining that the generator set is not in the area.
4. A reactive compensation method as recited in claim 3, further comprising: and if any generator set meets the judgment conditions of the plurality of pivot points, dividing the generator set into the partition where the pivot point with the largest correlation coefficient is located according to the size of the correlation coefficient.
5. A paid reactive power assistant service clearing method according to claim 4, wherein the classifying all generator sets participating in the paid reactive power assistant service based on the preset grouping criteria specifically comprises:
and classifying the generator sets participating in the paid reactive auxiliary service transaction according to the installed capacity.
6. A reactive assistance service clearing method according to claim 4, wherein said determining a mode of offers of the generator sets of the same type as the marginal unit as a unit clearing reference price based on the offer set of the generator sets of the same type specifically comprises:
determining available set lambda of paid reactive auxiliary service quotations declared by the same type of generator setG＝{λg1,λg2 λgnIn which λ isg1、λg2、…λgnQuotations of generator sets g1, g2 and … gn which belong to the same type respectively;
based on
Figure FDA0002703927790000021
Determining a unit clearing reference value, wherein the set lambdaGMode of middle element
Figure FDA0002703927790000022
I.e. the unit clearing reference value, Mod (lambda)G) Is a calculated function of the mode of the set.
7. A paid reactive power ancillary services liquidation method as claimed in claim 6 wherein the determination of the preset deviation tolerance margin for the difference between the block liquidation reference price and the zone liquidation reference price comprises:
the unit clearing reference price and the partition clearing reference price meet the requirement
Figure FDA0002703927790000023
Wherein
Figure FDA0002703927790000024
The reference price is cleared out for the subarea,
Figure FDA0002703927790000025
and (4) clearing a reference price for the unit,% is a preset deviation allowance.
8. A paid reactive power assistant service clearing method according to claim 7, wherein the value of the preset deviation allowable margin% is 3% -5%.
9. A paid reactive auxiliary service clearing device is characterized by comprising
The partition module is used for determining reactive voltage regulation and control partition of the generator set based on a preset partition judgment standard;
the unit classification module is used for classifying all the generator sets participating in the paid reactive auxiliary service based on a preset grouping standard;
the partition clearing reference price determining module is used for determining a marginal unit of the partition based on the paid auxiliary service demand of the partition and taking the quoted price of the marginal unit as a partition clearing reference price;
the unit clearing reference price determining module is used for determining the mode of the quoted prices of the generator sets of the same type as the marginal unit as the unit clearing reference price based on the quoted price set of the generator sets of the same type; and
and the clearing reference price determining module is used for clearing the unit clearing reference price of the marginal unit of any partition by the partition clearing reference price of the partition if the difference value of the unit clearing reference price of the marginal unit of the partition and the partition clearing reference price is within a preset deviation allowance.
10. A storage medium, characterized in that the storage medium has a computer program stored therein, the computer program at least being used for executing the paid reactive assistance service clearing method according to any one of claims 1 to 8.
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