CN112581306B - Exhaustive-based regional network topological relation confirmation method, device and system - Google Patents

Exhaustive-based regional network topological relation confirmation method, device and system Download PDF

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CN112581306B
CN112581306B CN201910943624.XA CN201910943624A CN112581306B CN 112581306 B CN112581306 B CN 112581306B CN 201910943624 A CN201910943624 A CN 201910943624A CN 112581306 B CN112581306 B CN 112581306B
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electric energy
topological relation
meter
metering device
energy meter
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CN112581306A (en
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王鹏
黄兆鹏
宋宇
张毅
黄健
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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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
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

The invention relates to the technical field of topological relation of power utilization networks in a station area, and provides a method based on the following conditionsThe method, the device and the system for confirming the regional network topological relation are provided. The method comprises the steps of determining an area where a power utilization network topology relationship attribution error is likely to occur; acquiring electric energy data corresponding to each electric energy metering device contained in the area; when the topological relation is calibrated, the potential combinations of the topological relations of the electric energy meters are exhausted; according to the electric energy data, calculating total electric energy W in the above-mentioned all-out electric energy meter topological relation combinations 0 Sum of user sub-tablesDetermining the total electric energy W corresponding to the topological relation combination of each electric energy meter 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference; and comparing all metering device lists of the current area by using the first electric energy meter topological relation combination to obtain a first electric energy metering device list to be verified in the field. The invention improves the checking efficiency.

Description

Exhaustive-based regional network topological relation confirmation method, device and system
[ field of technology ]
The invention relates to the technical field of topological relation of a district power utilization network, in particular to a method, a device and a system for confirming topological relation of a regional network based on exhaustion.
[ background Art ]
The wrong regional power grid topology, the conservation of energy between power supplies is broken. The regional power utilization network topological relation is disordered, so that a great deal of adverse effect is brought to production and technical management work in the power industry, and the power industry needs to comb the regional power utilization network topological relation to find out the real regional power utilization network topological relation.
In reality, a conventional manual investigation method is generally adopted in a method for solving the topology problem of the power supply range (transformer area for short) of a power supply transformer. The power supply company uses a great deal of manpower to check the connection relation of each user line until all the electric energy users on the power transformer are found out, and a real topological relation of the regional power utilization network is obtained. Because the circuit is chaotic in reality, people often cannot easily check clearly.
In recent years, the national power grid company, the southern power grid company and the subordinate enterprises thereof, the enterprises and the team of various technical development research classes have made a great deal of researches on the novel technology of carding the topological relation of the regional power utilization network, but a method which excludes manual operation and is more practical is not obtained.
Among them, a new technological research result with a great influence is "the voltage-related method of the user terminal". The basic principle of this method is that the voltage change curves measured by all the electric energy meters in one area in the same time period should be the same. In view of the principle, the correlation strength between the voltage time series data of each user electric energy meter to be judged and the total voltage time series data of the transformer is calculated, so that the user to be judged belongs to or does not belong to the local area. The disadvantage of this new method is that most of the electric energy meters do not have the function of transmitting voltage data, and there is no voltage data, and the usability of this new method has a huge limitation. This is also why this technique cannot be generalized.
In view of this, overcoming the drawbacks of the prior art is a problem to be solved in the art.
[ invention ]
The invention aims to solve the technical problem that in the prior art, no method for effectively confirming whether the topological relation of the regional power utilization network is correct exists, and the existing confirmation mode is that a power supply company uses a large amount of manpower to check the connection relation of each user line until all electric energy users on the power transformer are found out, so that a real topological relation of the regional power utilization network is obtained. Because the circuit is chaotic in reality, the manual work is often difficult to check clearly, and the efficiency is low.
The invention further solves the technical problems that in the prior art, a mode of manually checking each user line is adopted, so that the problem point is difficult to find rapidly under the condition of malicious line serial change after checking is completed, and the network topology relation in the problem area is required to be checked again at least, so that great resource waste is caused.
In a first aspect, the present invention provides an exhaustion-based regional network topology relationship confirmation method, including:
determining one or more areas where a potential for a power usage network topology assignment error may occur;
acquiring electric energy data corresponding to each electric energy metering device contained in the one or more areas;
when the topological relation is calibrated, the potential combinations of the topological relations of the electric energy meters are exhausted;
according to the electric energy data, calculating total electric energy W in the above-mentioned all-out electric energy meter topological relation combinations 0 Sum of user sub-tables
Determining the total electric energy W corresponding to the topological relation combination of each electric energy meter 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference;
and comparing all metering device lists of the current area by using the first electric energy meter topological relation combination to obtain a first electric energy metering device list to be verified in the field.
Preferably, after the first electric energy metering device list to be verified in the field is obtained, the method further comprises:
acquiring a verification result which is returned by the field investigation staff and is correct for the attribution of the power utilization network topological relation of the first electric energy metering device list to be verified in the field;
if the topology relation judgment error number of the metering devices in the corresponding first electric energy metering device list exceeds the preset threshold in the verification resultTaking the electric energy metering device with correct verification topological relation in the verification result as a fixed object in the topological relation of the electric energy meter, and iterating to the process of solving the sum phase difference of the total electric energy meter and the sub electric energy meter; thereby obtaining the corresponding total electric energy W 0 User sub-meter sum of topological relation with each electric energy meterAnd combining topological relations of the second electric energy meter with the smallest phase difference.
Preferably, the staff for field investigation further verifies whether the topological relation of the electric energy metering devices in the corresponding second electric energy metering device list is wrong according to the second electric energy metering device list to be verified in the field determined by the second electric energy meter topological relation combination; and repeating the iterative process until the verification result proves that the topological relation conclusion of the electric energy metering devices recorded in the electric energy metering device list is correct.
Preferably, the corresponding total electrical energy W 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference specifically comprises the following steps:
calculating the total electric energy W corresponding to each electric energy meter topological relation combination 0 User sub-meter sum of topological relation with each electric energy meterMean square error between;
and the electric energy meter topological relation combination with the minimum corresponding mean square value is the first electric energy meter topological relation combination.
Preferably, when calibrating the topological relation, before the combination of the potential topological relations of each electric energy meter, the method further comprises the following steps:
according to the power line maintenance record at the data management platform side and/or the electric energy metering devices exceeding the preset threshold value, feeding back metering data abnormal values and the original attribution area information of each electric energy metering device, and completing verification of each electric energy metering device and the attribution area;
the verification result is taken as a known fixed attribute in the exhaustive combination, and the operation of the exhaustive combination is carried out on the electric energy metering device which is not verified.
Preferably, the electric energy data of each electric energy metering device is stored according to the corresponding relation between the electric energy data and the load current, and when the corresponding electric energy data is used as the calculation, the method further comprises:
And extracting the electric energy data of the load current at the same or adjacent energy levels from the electric energy data of different electric energy metering devices involved in the same round of calculation process as a parameter value for calculation.
Preferably, before determining the one or more areas where the power usage network topology assignment error potentially occurs, the method further comprises:
respectively calculating the relation between the total electric energy data of the electric energy metering devices in each area and the total electric energy data of the sub-meters of each electric energy metering device in the area, and confirming one or more target areas with wrong attribution of the topological relation of the power utilization network;
the determining of the one or more sub-areas where the power utilization network topology assignment error potentially occurs is specifically implemented as: and determining one or more areas which are potentially subject to the fault of the topology relation of the power utilization network with the one or more target areas according to the one or more target areas.
In a second aspect, the present invention provides an exhaustion-based regional network topology relationship confirmation system, which includes a database server, a power consumption network topology relationship calculation server and one or more intelligent terminals, and specifically:
The database server is used for storing the initial attribution relation of the electric energy metering devices in each area and the areas, storing the electric energy data reported by the electric energy metering devices, and providing a data access interface for the power utilization network topological relation calculation server;
the power utilization network topological relation calculation server is used for executing the following process contents:
determining one or more areas where a potential for a power usage network topology assignment error may occur;
acquiring electric energy data corresponding to each electric energy metering device contained in the one or more areas;
when the topological relation is calibrated, the potential combinations of the topological relations of the electric energy meters are exhausted;
according to the electric energy data, calculating total electric energy W in the above-mentioned all-out electric energy meter topological relation combinations 0 Sum of user sub-tables
Determining the total electric energy W corresponding to the topological relation combination of each electric energy meter 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference;
and comparing all metering device lists of the current area by using the first electric energy meter topological relation combination to obtain a first electric energy metering device list to be verified in the field.
Preferably, the system further comprises an operator, in particular:
acquiring a verification result which is returned by the field investigation staff and is correct for the attribution of the power utilization network topological relation of the first electric energy metering device list to be verified in the field;
if the topological relation of the metering devices in the corresponding first electric energy metering device list in the verification result judges that the error quantity exceeds a preset threshold value, the electric energy metering device with the correct verification topological relation in the verification result is used as a fixed object in the topological relation of the electric energy meter, and the iteration is carried out in the process of solving the sum phase difference of the total electric energy meter and the sub electric energy meter; thereby obtaining the corresponding total electric energy W 0 User sub-meter sum of topological relation with each electric energy meterAnd combining topological relations of the second electric energy meter with the smallest phase difference.
In a third aspect, the present invention also provides an exhaustion-based regional network topology relationship confirmation device, the device comprising:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being programmed to perform the exhaustive area network topology verification based method of the first aspect.
In a fourth aspect, the present invention also provides a non-volatile computer storage medium storing computer executable instructions for execution by one or more processors to perform the method of confirming a network topology based on exhaustion of the first aspect.
The invention provides one or more areas where the power utilization network topology attribution errors potentially occur, and one or more power metering devices (actually expressed as high probability) in the power utilization network topology attribution error state in the one or more areas are determined through the power data, so that more effective investigation basis is provided for the workers in field investigation. The embodiment of the invention has the effect advantage, and the advantage is particularly outstanding for scenes with larger application scale.
[ description of the drawings ]
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic flow chart of a method for confirming a topological relation of a regional network based on exhaustion, which is provided by an embodiment of the invention;
FIG. 2 is a schematic diagram showing the distribution effect of the total and sub-tables of the electric energy metering device in an area according to the embodiment of the present invention;
FIG. 3 is a schematic diagram showing the distribution effect of the total and sub-tables of the electric energy metering device in an area according to the embodiment of the present invention;
fig. 4 is a schematic flow chart of a similarity calculation method according to an embodiment of the present invention;
FIG. 5 is a flowchart of a similarity calculation method according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for confirming a topological relation of a regional network based on exhaustion with field verification feedback according to an embodiment of the present invention;
fig. 7 is a schematic architecture diagram of an exhaustive area network topology relationship-based validation system according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an electrical energy data storage format provided by an embodiment of the present invention;
FIG. 9 is a schematic diagram of another electrical energy data storage format provided by an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an apparatus for confirming a topological relation of a regional network based on exhaustion according to an embodiment of the present invention.
[ detailed description ] of the invention
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the embodiments of the present invention, the symbol "/" means that there are two functions at the same time, and the symbol "a and/or B" means that the combination between the front and rear objects connected by the symbol includes three cases "a", "B", "a and B".
In the invention, the topological relation of the regional power utilization network refers to the connection and attribution relation between the electric energy meter summary list (the lower concept of the electric energy metering device summary list) of the similar transformer area and the user electric energy meter sub-list (the lower concept of the electric energy metering device sub-list); the connection and attribution relation between the total table of the electric energy meters in the district and the electric energy meter sub-tables of all companies in the industrial park can also be realized; the connection and attribution relation between the total table of the electric energy meters in the district and the electric energy meter sub-tables of all users and the electric energy meter sub-tables of the company in the business-to-residence park can be realized; the method can also be used for connecting and attributing relations between the total meter of the electric energy meters in each building in the community and the sub meter of the electric energy meters of each resident and the like. In the subsequent embodiments of the present invention, more scenes of the total table of the electric energy meters of the district and the sub table of the electric energy meters of the user are developed and described, however, on the basis of the technical description of the scenes, those skilled in the art can use corresponding technical means in similar scenes of the above examples without creative labor, and the subsequent description is omitted.
In theory, in a specific application scenario of a platform area, the electric energy data meets an energy conservation relation that the electric energy input by the platform area (the total table of electric energy meters) is equal to the sum of all user electric energy data (the sub tables of electric energy meters). The above-mentioned "conservation of electric energy" can only be established under the correct, true topological relation of the district power utilization network. In an actual scene, the line loss and the error of the electric energy metering device exist, so that the electric energy conservation relationship is a relative relationship and is not an equivalent relationship in the absolute strict data sense. One necessary and sufficient condition for the correctness of the district power network topology (the underlying concept of the district power network topology described in the present invention) is: a unique set of power data can be found that at each point in time satisfies the above-described relative energy conservation relationship for the region (the energy conservation relationship for the region will be referred to simply as the region in the following of the present invention).
In reality, there may be data in the electric energy data of the area that does not belong to the area, and there may be electric energy data that originally belongs to the area that cannot be seen in the area. In this case, a group of data cannot be found so that the energy conservation relationship of the transformer area is established, and the topology relationship of the power utilization network of the transformer area cannot be calculated by using the power data of the transformer area. This is why the prior art does not use the power data in the zones to calculate the power usage network topology of the zones.
The invention expands the range of using the electric energy data to select the electric energy data for calculation, in particular to the electric energy data of one or more areas adjacent to other areas which are potentially wrong in the topological relation of the electric power utilization network, and the electric energy data are also used as the data for calculating the topological relation of the electric power utilization network according to the scheme of the invention. For example: the power data of other areas belonging to the same power distribution room as the present area, the power data of other areas belonging to the same residential area or village as the present area, the power data of other areas of the same power supply station as the present area, and the like.
The method for selecting the electric energy data is matched with the calculation of the topological relation of the power utilization network of other areas, the electric energy data (called as 'foreign user' for short in the specific embodiment of the invention) which does not belong to the area can be returned to the area where the electric energy data is supposed to be, and the electric energy data (called as 'escape user' for short in the specific embodiment of the invention) which is counted by the error to the other areas can be returned to the area. Thus, the topological relation of the real area power utilization network of the area (and the adjacent area) can be obtained.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other. The implementation of the present invention will now be described in a stepwise fashion by means of various embodiments.
Example 1:
the embodiment 1 of the present invention provides a method for confirming a topological relation of an area network based on exhaustion, which is described in the embodiment of the present invention, belongs to a broader concept of a relative platform area, and can be divided into an area concept as long as the mapping relation between a total table (short for a total table of an electric energy metering device) and a sub-table (short for a sub-table of an electric energy metering device) is related, so that the concept of the area is more biased to the technical problem solved by the embodiment of the present invention, and extends to the technical problem related to a total table and sub-table layout scene in the prior art, and for the problem that the record information after layout (the record information here refers to the mapping relation between the total table and the sub-table on the logic recorded on the server side) and the actual layout line do not correspond, for example: the logic relationship between the total table and the sub table recorded on the server side can occur in the adjacent station area, the adjacent power distribution room, the adjacent cell, one distribution network line provided with a plurality of total tables, and the like, and is inconsistent with the connection mode among the electric meters in the actual scene. The transformer area belongs to the most typical aspect of the corresponding problems in the prior art, and the complex problems of electricity consumption, charging, errors of an electric energy metering device, electricity stealing, electricity leakage and the like are related to the application scene which is needed to be solved most urgently at present, wherein the most basic requirement is to comb the attribution of the topological relation of the electricity consumption network in the transformer area, which is also the technical problem which is relatively solved in a targeted way. As shown in fig. 1, the method of the embodiment of the present invention includes:
In step 201, one or more regions in which a power usage network topology assignment error potentially occurs are determined.
The determination method here may be simply divided by the information recorded in the database server, for example: the database server records the mapping relation (described as the topological relation of the power utilization network in the embodiment of the invention) between the total table of each area and the sub-table of the electric energy meter of each building of each area. The calibration of one or more areas with potential attribution errors of the topological relation of the power utilization network can be performed according to the characteristics of the areas of the divided geographic positions.
In addition to the above simple calibration of the potential area according to the divided geographical areas, in the implementation process of the embodiment of the present invention, it may be preferable to establish, in conjunction with a specific installation environment, a mapping relationship between an ammeter (including a summary table and/or a sub table) and each installation device (for example, a transformer box) to assist in determining, specifically, a related operator may report corresponding setting information of a plurality of summary tables set in the same transformer box to the database server, and accordingly, the same transformer box or a plurality of summary tables in the same transformer box may become one of objects of one or more areas where the topology relationship attribution error of the power utilization network may potentially occur. Taking fig. 2 as an example, if the two electric energy metering devices in the area 1 and the area 2 are arranged in the same transformer box, the area 1 and the area 2 can be considered as one or more areas where the topology relationship of the power utilization network is potentially wrong. Specifically, since the total table M0 of the electric energy metering device and the total table N0 of the electric energy metering device are disposed in the same transformer box, the sub-tables in the area may have inconsistent topological relations between the actual line connection and the record electric network of the database server as shown in fig. 2, for example: the lines of the sub-meter M1 and the sub-meter N1 are cross-connected, i.e. the line of the sub-meter M1 is connected to the total meter N0 of the electric energy meter, and the line of the sub-meter N1 is connected to the total meter M0 of the electric energy meter, at this time, the topology relationship of the power network recorded by the database server is shown in fig. 2, and the actual line connection relationship is shown in fig. 3.
In the preferred implementation manner, by further combining the related information of the installation environment (the mapping relationship between the built ammeter and each installation device), the method is more effective and accurate than the above-mentioned method which simply uses the data recorded in the database server and according to the mapping relationship between the total table and the sub table of the geographic location division, to perform one or more region divisions in which the attribution error of the topology relationship of the power utilization network potentially occurs. On the other hand, the preferred mode can amplify the analyzed environment in a certain sense, and the effectiveness of identifying the attribution error of the topological relation of the power utilization network finally through calculation is improved. For example: for the subsequent construction reasons, a total table is newly added in the existing transformer substation, and if the corresponding operation is recorded in the database only by the corresponding relation between the total table and the sub table, the possible judgment that the attribution error of the topological relation of the power utilization network is possibly generated is omitted. Because it is classified only by the type of electricity used or by the geographical location of the division, the actual environmental considerations between the two within the same substation may be missed.
In a further aspect, in actual situations, regarding the mapping relationship between the total table of the platform area and the electric energy meter sub-table of each building of each cell recorded in the database server, besides the possible mapping relationship error between the electric energy meter sub-table and the total table in the individual building, the possibility of directly registering the position error between the total tables may also occur, and at this time, by using the preferred implementation manner, the analysis range of one or more areas where the attribution error of the topology relationship of the power utilization network may potentially occur can be more effectively widened. Still taking fig. 2 as an example, in which the total power meter table M0 and the total power meter table N0 are disposed in the same power transformation box, an error condition may occur at a position between the total power meter table MO and the total power meter table N0 recorded in the database. This is also considered during the subsequent validation of step 203 of an embodiment of the present invention.
In step 202, electrical energy data corresponding to each of the electrical energy metering devices contained within the one or more regions is obtained.
The source end for acquiring the electric energy data is described as a database server in the embodiment of the invention, and the database server is usually represented as a data management platform of an electric power company in an actual environment, namely, a main body for collecting and storing electric energy data of all electric energy metering devices and sub-meters of the electric energy metering devices in an area range is provided. The implementation manner of the corresponding main body is not limited to a server in a single form, but can be a cloud platform or a third-party database management platform for completing management, and is not limited in particular.
In the subsequent developed specific calculation method of the embodiment of the invention, the use of the electric energy data relates to electric energy data in a continuous time sense, electric energy data in different time periods, electric energy data in special scenes and the like. Even if some electric energy data cannot be directly provided by the existing data management platform of similar electric power company, the corresponding method provided by the embodiment of the present invention is needed to process the corresponding electric energy data, and how to process the corresponding electric energy data will be specifically described in the following description of the embodiment of the present invention.
In step 203, the topology is calibrated, and each potential combination of the topology of the electric energy meter is exhausted.
If step 201 and step 202 are ready actions, then step 203 is to enter the actual operation step content. The combinations of the topology relations of the electric energy meters, which are possible to be used, are analyzed according to one or more areas where the topology relations of the electric energy meters are potentially wrong, which are determined in the step 201.
In step 204, according to the electric energy data, the total electric energy W in the above-mentioned exhaustive combinations of topological relations of each electric energy meter is calculated 0 Sum of user sub-tables
It is emphasized that the total electrical energy W here 0 Sum of user sub-tablesThe method is suitable for each electric energy meter topological relation combination, namely the identifier W is used for total electric energy in each electric energy meter topological relation combination 0 Is represented by the identifier +.>Wherein n is the total number of users in the topology relation combination of the electric energy meter, and the corresponding W i Is a representation of the power data corresponding to the ith user.
In step 205, the corresponding total power W in each power meter topology combination is determined 0 User sub-meter sum of topological relation with each electric energy meter And combining topological relations of the first electric energy meter with the smallest phase difference.
Preferably, in the embodiment of the present invention, the phase difference distance is calculated by using a mean square error method. Specifically, in each electric energy meter topological relation combination, the corresponding total electric energy W is calculated 0 User sub-meter sum of topological relation with each electric energy meterMean square error between; and the electric energy meter topological relation combination with the minimum corresponding mean square value is the first electric energy meter topological relation combination.
In step 206, the first electric energy meter topology combination is used to compare all metering device lists in the current area, and a first electric energy metering device list to be verified in the field is obtained.
The embodiment of the invention provides one or more areas where the attribution errors of the topological relation of the power utilization network potentially occur, and determines one or more electric energy metering devices (including the foreign households and/or escaping households) in the attribution error state of the topological relation of the power utilization network in the one or more areas through the electric energy data, so that more effective investigation basis is provided for the workers in field investigation. The embodiment of the invention has the effect advantage, and the advantage is particularly outstanding for scenes with larger application scale.
In one or more calculation modes provided by the embodiment of the invention, the description is mainly presented by probability of attribution error state of the topological relation of the power consumption network of the electric energy metering device, which mainly considers that in practice, the application scene related to the method provided by the invention generally comprises hundreds or even thousands of electric energy metering devices (a cell is taken as an example, a resident of the order of thousands of households can be reached, and each resident is usually provided with a sub-meter of the electric energy metering device), and for a region and province, the number of the related electric energy metering devices is larger, and the specific calculation environment is more complex, especially, some of the related electric energy metering devices are transmitted in long distance, and the possibility of shunting exists in the transmission process and is shunted under the condition of being registered by a non-regular database server; in addition, errors in the power metering device itself and line losses on the transmission line can complicate the computing environment. Therefore, the computing environment in the reality scene is a non-ideal environment, and the corresponding result can not reach 100% of accurate computing result naturally, so the embodiment of the invention provides a method for describing the possibility of attribution errors of the topology relation of the electric power network of each electric energy metering device sub-meter and the electric energy metering device by utilizing the phase difference of the total electric energy of the sub-meter and the total electric energy of the sub-meter. The phase difference can be calculated by the power utilization network topological relation calculation server to be seen by an advanced manager, and for a field investigation worker, the phase difference can be obtained by only acquiring an assignment task requiring to verify the attribution of the power utilization network topological relation of the one or more electric energy metering devices. That is, by the method of the embodiment of the present invention, the display manner of completing the one or more electric energy metering devices in the fault state of the topology relationship of the power utilization network may be various, and the embodiment of the present invention is not particularly limited.
In the embodiment of the invention, at least three specific modes are provided for calculating the correlation between the total electric energy data of the electric energy metering devices in each area and the electric energy data of one or more electric energy metering devices which establish the topology relation of the useful electric network with each area in the current record.
Mode one, as shown in fig. 4:
in step 301, each of the one or more regions is exhausted, and each of the power metering devices is capable of forming a combination of a summary of the power metering devices in each region and a sub-meter of the power metering devices contained within the corresponding region.
Although the description is exhaustive, it is in practice more varied and complex than the one described in step 301, for example: the total list of regional power metering devices that have been historically verified for the power usage network topology and the sub-list of power metering devices within the corresponding region may then be present in each combination as a known quantity in a fixed form, i.e. the above-described verified power usage network topology (considered correct) is no longer added to the exhaustive process of step 301, thereby simplifying the overall mode one calculation process.
However, in a specific operation process, in a strict consideration, it is preferable that in an initial several rounds of calculation, the historically verified power consumption network topology relationship be used as a correct known quantity, and if a large similarity deviation still exists after several rounds of demonstration, on the basis of the electric energy metering device of the power consumption network topology relationship verified by the method proposed by the embodiment of the present invention, the historically verified power consumption network topology relationship also needs to be added to the exhaustive object in step 301 of the embodiment of the present invention as an object to be verified.
In step 302, the total power Z is measured according to the power metering device i (understanding that the total electric energy W in the ith electric energy meter topological relation combination 0 ) And the sum F of the sub-meter electric energy of the electric energy metering device contained in the corresponding area in the corresponding combination i (understanding is that the sum of user sub-meters in the ith electric energy meter topological relation combination) Calculate Z i And F i The difference between the two and/or the variance of the difference between the two.
Where i indicates the i-th combination. And for the total power Z i In other words, it can use the electric energy data within a specified time period as the corresponding Z i The parameter value can also be used for selecting the electric energy data in a certain time period as the corresponding Z i The combination of the electric energy data in the time intervals can also be used as the corresponding Z i Parameter values. The preferred parameter value selection method is not particularly limited, and will be specifically described in the corresponding data analysis section of the embodiment of the present invention.
In step 303, the calculated Z of each combination is compared i And F i And obtaining a first electric energy meter topological relation combination with the smallest difference in the electric network topological relation combinations according to the difference between the two and/or the variance of the difference between the two.
Wherein, step 302 and step 303 describe a round of Z i And F i The comparison of the two, while in a specific operation the number of comparisons can be multiple groups, and for the multiple group comparison process the corresponding powerThe data also requires configuration of multiple sets. The simple conclusion is that, generally, the more the comparison times are, the more the occupation of the computing resources of the electricity topology data computing server is, the longer the corresponding computing time is, however, the accuracy of the corresponding computing result is improved to a certain extent, and finally, how to choose or choose to adjust the actual computing environment and the actual number of workers in field investigation is not repeated here.
In step 304, according to the combination of the actually obtained power utilization network topology relationship attribution relationship and the obtained first electric energy meter topology relationship, calibrating one or more electric energy metering devices with the probability of occurrence of power utilization network topology relationship attribution error exceeding a preset threshold.
In a specific operation process, the one or more electric energy metering devices with the probability of error attribution of the calibrated power utilization network topology relation exceeding a preset threshold value can directly send the related information of the electric energy metering device to be verified to the intelligent terminal of the on-site investigation staff through the intelligent terminal provided for the on-site investigation staff and provided in the subsequent system embodiment of the invention, and the on-site investigation staff goes to the site to complete the investigation work.
Mode two, as shown in fig. 5:
in step 501, the Z is calculated when the user power meter to be determined is removed or added i And F i A difference between the two and/or a variance between the two.
The method comprises the steps of judging whether a user electric energy meter to be judged is needed or not, wherein the steps of removing the user electric energy meter to be judged and adding the user electric energy meter to be judged actually correspond to the concepts of 'foreign users' and 'escape users' introduced by the invention. Therefore, in the two-phase comparison mode, the method of solving the correct probability of the power utilization network topological relation of the specific electric energy metering device through the similarity of various combinations is converted into the method of introducing concepts of 'foreign users' and 'escape users' into the calculation process, calculating the correct probability of the power utilization network topological relation of each electric energy metering device on the basis of one initial combination, and judging the error type of the power utilization network topological relation.
In step 502, all user electric energy meters to be determined or their combinations are calculated exhaustively, and F is added or exited i When making Z i And F i The difference value of the two and/or the variance of the two changes to the minimum, so that the user electric energy meter to be determined or the combination of the user electric energy meter to be determined is determined to be correct in attribution of the topological relation of the power utilization network.
In comparison, the second mode is more effective in obtaining the calculation result than the first mode, but the second mode is more suitable for a scenario in which the power network topology of the remaining power metering devices needs to be confirmed after the power network topology of a part of the power metering devices has been confirmed historically. Because the number of effective electric energy metering devices (namely, the electric energy metering devices with correct topological relation of the power utilization network) contained in the initial combination is larger at this time, the accuracy of the final calculation result is better ensured.
In both the first and second modes, the network topology relationship of the power metering device which has been verified in history is described, and can be used as known correct information in the initial several calculation processes. The corresponding operation can improve or raise the computational efficiency to a great extent, however, there are some preferred technical means based on the exhaustive determination method based on the regional network topology relationship provided by the embodiment of the present invention, and the number of the exhaustive combinations in the first and second modes can be further simplified. The specific explanation is as follows:
the power utilization network topological relation calculation server can finish verification of each power metering device and the attribution area according to the power utilization line maintenance record at the data management platform side and the original attribution area information of each power metering device; and/or the number of the groups of groups,
The power utilization network topological relation calculation server can feed back abnormal values of metering data and original attribution area information of each electric energy metering device according to the electric energy metering devices exceeding a preset threshold value, and can finish verification of each electric energy metering device and attribution areas;
the verification result is taken as a known fixed attribute in the exhaustive combination, and the operation of the exhaustive combination is carried out on the electric energy metering device which is not verified. Wherein the known fixed attribute means as invariant, is excluded from the exhaustive range as an inherent attribute, and is directly added to the combination as the content contained in the combination.
The above scheme provides a preferred technical means, which can combine historically generated power line maintenance and metering data abnormality, and uses the electric energy metering devices which can finish the power network topology attribution verification in advance by using the elimination method and the like as fixed attributes, and the electric energy metering devices are excluded from the exhaustion range of the step 301, so that the calculation amount is further reduced, and the calculation efficiency of the method for confirming the regional network topology relation based on exhaustion provided by the embodiment of the invention is improved.
The power utilization line overhaul can be power utilization overhaul for buildings, power utilization overhaul for communities and power utilization overhaul for areas, and short power utilization vacuum period is brought to the power utilization overhaul of the phase, so that possibility is provided for verifying the topology relation of the power utilization network of an individual area. For example, because electricity is used for maintenance, power outage measures are taken for electricity consumption in a cell, however, in reality, 1 electric energy metering device of the cell still works, and it can be determined through the analysis that the topology relationship attribution of the electricity consumption network between 1 electric energy metering device of the cell and the total surface of the electric energy metering device of the area corresponding to the cell is clearly erroneous verification information, and when the verification information is used for exhaustion in step 301, the possibility of combining 1 electric energy metering device of the cell and the total surface of the electric energy metering device of the area corresponding to the cell can be reduced. The abnormal data may be abnormal electricity consumption caused by emergency, such as power failure of a section caused by construction, power failure of a section caused by natural disasters, etc., and the effect of the abnormal data is similar to that of the electric circuit maintenance described above in the embodiment of the present invention from the side, but the reliability is lower.
In the embodiment of the invention, for the operation mode of field investigation of the staff delegating field investigation, the investigation result can be fed back to the power utilization network topological relation calculation server to realize feedback type iterative calculation. Thus, in connection with the embodiment of the present invention, there is a preferred extension, as shown in fig. 6, the method further includes:
in step 601, a verification result of whether the topology relationship attribution of the power utilization network of the one or more power metering devices is correct is obtained, wherein the verification result is returned by the field investigation staff.
The probability result is not an absolute result in a strict sense, which is calculated by the embodiment of the invention and is wrong in attribution of the power utilization network topological relation for each electric energy metering device in the power utilization network topological relation. And, the relevant information of the electric energy metering device carried in the task of actually triggering each on-site investigation staff to verify is also the electric energy metering device screened according to the preset threshold value determined in the step 304, so that the possibility that the corresponding power utilization network topological relation belongs to correct or incorrect after the on-site investigation staff verifies exists.
In step 602, iterating the verification result into a power utilization network topology relationship attribution calculation process, and obtaining one or more electric energy metering devices with updated power utilization network topology relationship attribution error probability exceeding a preset threshold.
The above-mentioned first and second modes are described, and the step 602 involves iterating the verification result into the calculation process of attribution of the topology relationship of the power utilization network, specifically, using the verification result returned in the step 601 as the newly added fixed attribute, and re-executing the steps 301-304. As can be seen from the above description, the first and second modes may be used alternatively or in parallel in the embodiment of the present invention, and will not be described herein.
In connection with the embodiments of the present invention, there is a preferred implementation scheme, where before step 201 is performed, the method processes of step 201 to step 206 are performed only when it is generally found that the sum of the total electric energy of the electric energy metering devices and the sum of the total electric energy of the electric energy metering devices in a certain area differs by more than a second preset threshold, otherwise, it is determined that the topology relationship of the power utilization network of the corresponding area is normal, and the method processes of step 201 to step 206 are not performed. Thus, in this preferred implementation, the method further comprises, typically prior to determining the one or more regions where the power usage network topology assignment error potentially occurs:
Respectively calculating the relation between the total electric energy data of the electric energy metering devices in each area and the total electric energy data of the sub-meters of each electric energy metering device in the area, and confirming one or more target areas with wrong attribution of the topological relation of the power utilization network;
the determining of the one or more sub-areas where the power utilization network topology assignment error potentially occurs is specifically implemented as: and determining one or more areas which are potentially subject to the fault of the topology relation of the power utilization network with the one or more target areas according to the one or more target areas.
In combination with the embodiment of the present invention, there is also a preferred implementation solution, which further includes, after obtaining the first electric energy metering device list to be verified in the field:
acquiring a verification result which is returned by the field investigation staff and is correct for the attribution of the power utilization network topological relation of the first electric energy metering device list to be verified in the field;
if the topological relation of the metering devices in the corresponding first electric energy metering device list in the verification result judges that the error quantity exceeds a preset threshold value, the electric energy metering device with the correct verification topological relation in the verification result is used as a fixed object in the topological relation of the electric energy meter, and the iteration is carried out in the process of solving the sum phase difference of the total electric energy meter and the sub electric energy meter; thereby obtaining the corresponding total electric energy W 0 User sub-meter sum of topological relation with each electric energy meterAnd combining topological relations of the second electric energy meter with the smallest phase difference.
In combination with the embodiment of the invention, a preferable extended implementation scheme also exists, and a worker for field investigation further verifies whether the topological relation of the electric energy metering devices in the corresponding second electric energy metering device list is wrong according to the second electric energy metering device list to be verified determined by the second electric energy meter topological relation combination; and repeating the iterative process until the verification result proves that the topological relation conclusion of the electric energy metering devices recorded in the electric energy metering device list is correct.
In combination with the embodiment of the invention, a preferred extended implementation scheme also exists, and when the topological relation is calibrated, before the combination of the potential topological relations of each electric energy meter is exhausted, the method further comprises the following steps:
according to the power line maintenance record at the data management platform side and/or the electric energy metering devices exceeding the preset threshold value, feeding back metering data abnormal values and the original attribution area information of each electric energy metering device, and completing verification of each electric energy metering device and the attribution area;
the verification result is taken as a known fixed attribute in the exhaustive combination, and the operation of the exhaustive combination is carried out on the electric energy metering device which is not verified.
In connection with the embodiment of the present invention, there is also a preferred implementation of an extension, before determining one or more areas where a topology assignment error of the power consumption network potentially occurs, the method further includes:
respectively calculating the relation between the total electric energy data of the electric energy metering devices in each area and the total electric energy data of the sub-meters of each electric energy metering device in the area, and confirming one or more target areas with wrong attribution of the topological relation of the power utilization network;
the determining of the one or more sub-areas where the power utilization network topology assignment error potentially occurs is specifically implemented as: and determining one or more areas which are potentially subject to the fault of the topology relation of the power utilization network with the one or more target areas according to the one or more target areas.
Example 2:
on the basis of providing an exhaustion-based regional network topology relationship confirmation method in embodiment 1 of the present invention, the embodiment of the present invention also provides an exhaustion-based regional network topology relationship confirmation system, which can be used to complete the corresponding method as described in embodiment 1, so that the corresponding technical content described in the embodiment of the present invention can be applied to the method implemented in embodiment 1 as well.
As shown in fig. 7, the system includes a database server, a power consumption network topology relation calculation server and one or more intelligent terminals, and in this embodiment of the present invention, considering the possibility of the scale of the data volume of a specific application scenario, the power consumption network topology relation calculation server may be in a single host form, or may be in a cloud platform implementation form, which is not limited in particular herein. The system specifically comprises:
the database server is used for storing the initial attribution relation of the electric energy metering devices in each area and the areas, storing the electric energy data reported by the electric energy metering devices, and providing a data access interface for the power utilization network topological relation calculation server;
the power utilization network topological relation calculation server is used for executing the following process contents:
determining one or more areas where a potential for a power usage network topology assignment error may occur;
acquiring electric energy data corresponding to each electric energy metering device contained in the one or more areas;
when the topological relation is calibrated, the potential combinations of the topological relations of the electric energy meters are exhausted;
according to the electric energy data, calculating total electric energy W in the above-mentioned all-out electric energy meter topological relation combinations 0 Sum of user sub-tables
Determining the total electric energy W corresponding to the topological relation combination of each electric energy meter 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference;
and comparing all metering device lists of the current area by using the first electric energy meter topological relation combination to obtain a first electric energy metering device list to be verified in the field.
In the embodiment of the invention, the intelligent terminal can be professional detection equipment, and is attached with the data interaction capability of a power utilization network topological relation calculation server; or the intelligent terminal is a smart phone in a general sense, the corresponding determination of topology attribution can be completed by professional detection equipment, and the staff in field investigation transmits the verification result data to the power utilization network topology relation calculation server through the intelligent terminal, so that the specific implementation form is not limited to the two types of the above, and the similar verification mode and feedback mode derived from the method belong to the protection scope of the embodiment of the invention.
The embodiment of the invention provides a method for determining one or more areas where the attribution errors of the topological relation of the power utilization network potentially occur, and determining the probability of one or more electric energy metering devices in the attribution error state of the topological relation of the power utilization network in the one or more areas through electric energy data, so that more effective investigation basis is provided for workers in field investigation. The embodiment of the invention has the effect advantage, and the advantage is particularly outstanding for scenes with larger application scale.
In the embodiment of the invention, the electric energy metering device specifically corresponds to households in each building under one platform area; or the electric energy metering device specifically corresponds to each resident in villages under one district; or the electric energy metering device specifically corresponds to each shop under one platform area; or, the electric energy metering device specifically corresponds to each factory building under one platform area.
Because the topological relation of the power utilization networks of the areas is disordered to different degrees, the electric energy data of different areas are also greatly different. For different electric energy data of the transformer areas, different applicable mathematical models can be constructed, different algorithms are selected, and the topological relation of the power utilization network of the transformer areas can be calculated more efficiently. The corresponding model and algorithm are stored in advance in the power utilization network topology calculation server. Next, a specific development will be described for 1 typical model:
model 1, total and sub-tables, and residual (and residual variance) minimization model (the model 1 corresponds to the one in embodiment 1)
And (3) model: min { residual } = total-sub-table sum (1)
min{σ Residual error }＝σ Summary sheet sub-meter (2)
The mechanism by which model 1 holds is physically:
And (3) calculating the combination of the total table and the differential table of the station area which can enable the residual error to be the minimum value by using the combination of the total table of the fixed station area and the exhaustive differential table, wherein the combination can form a real station area power utilization network topological relation as a high probability event.
Using equation (2) (where the residual is the variance in example 1), a combination of fixed-area total table, one-to-one exhaustive partial table sum, a combination of area total table and partial table sum is calculated that can minimize the residual's variance value, which can constitute a true-area power-use network topology as a highly probable event.
Under the condition that the electric energy meter errors are ignored, if all the sub-meters in the formula (1) are the user electric energy meters in the platform region, residual error in the formula (1) is=0, under the condition that the electric energy meter errors are considered, the residual error=the electric energy meter error sum is a small electric quantity, the sub-meters with the minimum residual error sum is formed, and the event of all the electric energy meters in the platform region is just a high probability event. Even so, the criterion for minimizing the residual error can only be used as a necessary condition of "the topology relationship of the district power utilization network is correct", and is not a sufficient condition. Otherwise, when the branch meters and the middle-area outer electric energy meters exist, residual errors tend to be large.
The meaning of the equation (2) is that, even if the power meter error factor is considered, when the sub-meters and just all the power meters in the station area are considered, theoretically, the variance=0 of the residual error is established (the residual error=0 is a sufficient condition for "the station area power network topology relationship is correct"). In practice, the variance of the residual is not 0, but a value very close to 0. When the sub-table sum is in the middle, the algorithm is as follows: the exhaustive user sub-tables form sub-table sums, and simultaneously satisfy the sub-tables of the formulas (1) and (2) and are the topological relation of the real power utilization network under the total table. On the contrary, when the branch meters and the middle-area outer electric energy meters are arranged, the residual error variance value tends to be large.
In view of the fact that the intra-and extra-site energy tables can be discriminated using equations (1) and (2), the present invention combines them as one of a set of mathematical models that calculate the site power network topology.
Example 3:
whether the process of method steps set forth in example 1 or the model set forth in example 2, it calculates the probability of one or more power metering devices belonging to an error state (including at least both the probability of a foreign user and the probability of a escaped user, and may also include a total registration error probability, etc.), it is necessary to use the power data reported by each power metering device recorded in the database server. However, in the case that we further consider that the error exists in the electric energy metering device itself and that the error corresponding to each electric energy metering device is in a segmented form under different load currents, it is further proposed in the embodiment of the present invention that the input parameters are further optimized when one or more electric energy metering devices are in probability of calculating the fault state of the topology of the electric network in the above embodiment 1 and embodiment 2.
As shown in fig. 8, the data format reported by a typical electric energy metering device stored in a database server, wherein, for different electric energy metering devices, besides the above-mentioned voltage-load current paired format (as shown in fig. 8) can also be used for storing the electric energy-load current paired format (as shown in fig. 9), the two modes are equivalent; however, two common features in the embodiments of the present invention are: the load current is recorded. When the parameter value is specifically taken, the electric energy data of different electric energy metering devices related to the same round of calculation process are considered, and the load current is extracted as far as possible to be at the same or adjacent energy level, so that the electric energy data of the large-span load current in the calculation process can cause larger fluctuation to error deviation of the same electric energy metering device, and the accuracy of the final calculation result is influenced. The method can be operated according to the set percentage reference value as far as possible, so that the accuracy of calculation is improved through the screening mechanism of the electric energy data participating in calculation under the condition that the electric energy data is rich. The embodiment 3 of the invention is particularly suitable for the situation that the calculation capability of the topological relation calculation server of the power utilization network is rich.
Example 4:
fig. 10 is a schematic architecture diagram of an apparatus for confirming a topological relation of a regional network based on exhaustion according to an embodiment of the present invention. The exhaustive area network topology relation-based confirmation device of the present embodiment includes one or more processors 21 and a memory 22. In fig. 10, a processor 21 is taken as an example.
The processor 21 and the memory 22 may be connected by a bus or otherwise, which is illustrated in fig. 10 as a bus connection.
The memory 22 serves as a non-volatile computer readable storage medium for storing non-volatile software programs and non-volatile computer executable programs, such as the exhaustive area network topology verification based method of embodiment 1. The processor 21 performs an exhaustive area network topology based validation method by running non-volatile software programs and instructions stored in the memory 22.
The memory 22 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 22 may optionally include memory located remotely from processor 21, which may be connected to processor 21 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The program instructions/modules are stored in the memory 22 and when executed by the one or more processors 21 perform the exhaustive based regional network topology relationship determination method of embodiment 1 described above, for example, performing the steps shown in fig. 1, 4, 5 and 6 described above.
It should be noted that, because the content of information interaction and execution process between modules and units in the above-mentioned device and system is based on the same concept as the processing method embodiment of the present invention, specific content may be referred to the description in the method embodiment of the present invention, and will not be repeated here.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the embodiments may be implemented by a program that instructs associated hardware, the program may be stored on a computer readable storage medium, the storage medium may include: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like.
Example 4:
the embodiment of the invention also provides an example of the method for confirming the regional network topological relation based on exhaustion and the system practice for confirming the regional network topological relation based on exhaustion, which are provided by the embodiment 1 of the invention, and the embodiment 2. In the embodiment of the present invention, the topology relationship of the regional power utilization network is specifically represented as a platform topology, and the concept of the platform topology refers to that a power supply platform is formed by a power transformer (which is generally and correspondingly provided with a total electric energy meter, namely, one of the specific expression forms of the total table of the electric energy metering devices) and all electric energy users supplied by the power transformer (each of which is provided with a user electric energy meter, namely, one of the specific expression forms of the sub table of the electric energy metering devices described in the embodiment 1 of the present invention).
The line connection relation of the transformer total electric energy meter connected with the user electric energy meter is called a district network power utilization network topology relation (called a district power utilization network topology relation for short). Because the power lines in the transformer area are in the wall, in the cable trench, and in addition, other transformers are nearby, statistical errors often occur in which power transformer the power consumer is actually connected to, and in the embodiment of the present invention, the topology relationship of the transformer area power network is described as an error. The example content is specifically as follows:
2 transformers of a 6# distribution room in a 96 # harbor macro family cell (hereinafter referred to as a "harbor macro cell") in the south Zhuang Zhen purple hole south road of Buddha urban area, buddha, guangdong province and the power utilization network topological relation of a power supply station area are calculated.
The time of the electric energy data is as follows:
25-day effective power data during 18-14 days of 2018, 6.
Calculation process of regional power utilization network topological relation
First step, selecting data
The bergamot power company reflows 25 days of power data from the guangdong power company information center, including all power data of 16 areas of the whole harbor macro-family cell.
Second step, selecting mathematical model and algorithm
Three models and algorithms were selected, respectively:
Model 1, total and sub-tables and residual (residual variance) minimization model
And (3) model: min { residual } = total-sub-table sum
min{σ Residual error }＝σ Summary sheet sub-meter
The algorithm selects the ' sub-table and ' combined exhaustive test algorithm '. Details of the foregoing are corresponding to those in embodiment 1 and embodiment 2, and are not described herein.
Model 2, model for calculating correlation coefficients of sub-tables and summary tables
The algorithm selects w 0i And (3) with"Complex correlation coefficient maximizing" algorithm, wherein +.>The term is the optimum obtained by combining the exhaustive methods. Details of the foregoing are corresponding to those in embodiment 1 and embodiment 2, and are not described herein.
Model 3, model for calculating derived relation between sub-table and total table correlation coefficient
The algorithm selects w 0i And (3) withIs the "pearson correlation coefficient maximization" algorithm of (2), wherein->The term is the optimum obtained by combining the exhaustive methods. Details of the foregoing are corresponding to those in embodiment 1 and embodiment 2, and are not described herein.
Third step, calculation and in-situ verification results
The following table comprehensively verifies the accuracy conclusion of the topology algorithm
Note that: the 'verification number' in the upper table is the number of all verification houses in the electric room; the "correct number of users" is the number of users whose topological attribution relation accords with the "recommended power network topological relation table" (i.e., the calculation result is verified to be correct); the 'calculating the serial number of users' is the number of users with wrong attribution of the topological relation of the power utilization network in the conclusion of the calculation of the serial number of users, namely the object to be inspected by the staff to be inspected in the field; the "outside of the calculation result" is the number of conventional users in the electric room, namely the object that the calculation probability of the topology relation attribution of the power utilization network is considered to be correct.
And from the calculation verification result, the accuracy of the series calculation result is higher, and the number of the 2 areas of the 6# electric room reaches 100%.
Meanwhile, the situation of 'series missing calculation' also exists, the miscalculation rate of the 2 areas is 5.8% and 12.8% respectively, and the post research result shows that the miscalculation is mainly caused by different periods of electric energy data acquisition. The power supply company is very satisfied with this calculation result, which is already far beyond the requirements of their assessment index.
And adjusting and obtaining the topological relation of the real power utilization network of the transformer area according to the calculation and the on-site verification result.
This round of computation has so far been solved by the remaining cross-over, if necessary, in the second round of computation and verification.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (7)

1. An exhaustive list-based regional network topology confirmation method is characterized by comprising the following steps:
determining one or more areas where a potential for a power usage network topology assignment error may occur;
acquiring electric energy data corresponding to each electric energy metering device contained in the one or more areas;
When the topological relation is calibrated, the potential combinations of the topological relations of the electric energy meters are exhausted;
according to the electric energy data, calculating total electric energy W in the above-mentioned all-out electric energy meter topological relation combinations 0 Sum of user sub-tables
Determining the total electric energy W corresponding to the topological relation combination of each electric energy meter 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference;
comparing all metering device lists of the current area by using the first electric energy meter topological relation combination to obtain a first electric energy metering device list to be verified in the field;
after obtaining the first electric energy metering device list to be verified in the field, the method further comprises the following steps:
acquiring a verification result of whether the power utilization network topological relation attribution of the first electric energy metering device list to be verified in the field is correct or not returned by a worker in the field investigation;
if the topological relation of the metering devices in the corresponding first electric energy metering device list in the verification result judges that the error quantity exceeds a preset threshold value, the electric energy metering device with the correct verification topological relation in the verification result is used as a fixed object in the topological relation of the electric energy meter, and the iteration is carried out in the process of solving the sum phase difference of the total electric energy meter and the sub electric energy meter; thereby obtaining the corresponding total electric energy W 0 User sub-meter sum of topological relation with each electric energy meterThe second electric energy meter topological relation combination with the smallest phase difference;
the staff for field investigation further verifies whether the topological relation of the electric energy metering devices in the corresponding second electric energy metering device list is wrong according to the second electric energy metering device list to be verified in the field, which is determined by the second electric energy meter topological relation combination; and repeating the iterative process until the verification result proves that the topological relation conclusion of the electric energy metering devices recorded in the electric energy metering device list is correct.
2. The exhaustive area network topology verification method of claim 1, wherein said corresponding total power W 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference specifically comprises the following steps:
calculating the total electric energy W corresponding to each electric energy meter topological relation combination 0 User sub-meter sum of topological relation with each electric energy meterMean square error between;
and the electric energy meter topological relation combination with the minimum corresponding mean square value is the first electric energy meter topological relation combination.
3. The method for confirming an exhaustive area network topology according to claim 1 or 2, wherein before the step of calibrating the topology, the method further comprises:
According to the power line maintenance record at the data management platform side and/or the electric energy metering devices exceeding the preset threshold value, feeding back metering data abnormal values and the original attribution area information of each electric energy metering device, and completing verification of each electric energy metering device and the attribution area;
the verification result is taken as a known fixed attribute in the exhaustive combination, and the operation of the exhaustive combination is carried out on the electric energy metering device which is not verified.
4. The method for confirming an exhaustive area network topology according to claim 1 or 2, wherein the electric energy data of each electric energy metering device is stored according to the electric energy data and the load current correspondence relation, and the corresponding electric energy data is used as the calculation time, further comprising:
and extracting the electric energy data of the load current at the same or adjacent energy levels from the electric energy data of different electric energy metering devices involved in the same round of calculation process as a parameter value for calculation.
5. The exhaustive area network topology verification method of claim 1, wherein prior to determining the one or more areas where a potential for a power usage network topology attribution error may occur, the method further comprises:
Respectively calculating the relation between the electric energy data of the total table of the electric energy metering devices in each area and the electric energy data sum of the sub-tables of the electric energy metering devices in each area, and confirming one or more target areas with wrong attribution of the topological relation of the power utilization network;
the determining of the one or more areas where the power utilization network topology assignment error potentially occurs is specifically implemented as follows: and determining one or more areas which are potentially subject to the fault of the topology relation of the power utilization network with the one or more target areas according to the one or more target areas.
6. An exhaustion-based regional network topological relation confirmation system is characterized by comprising a database server, a power utilization network topological relation calculation server and one or more intelligent terminals, and is characterized by comprising the following steps:
the database server is used for storing the initial attribution relation of the electric energy metering devices in each area and the areas, storing the electric energy data reported by the electric energy metering devices, and providing a data access interface for the power utilization network topological relation calculation server;
the power utilization network topological relation calculation server is used for executing the following process contents:
Determining one or more areas where a potential for a power usage network topology assignment error may occur;
acquiring electric energy data corresponding to each electric energy metering device contained in the one or more areas;
when the topological relation is calibrated, the potential combinations of the topological relations of the electric energy meters are exhausted;
according to the electric energy data, calculating total electric energy W in the above-mentioned all-out electric energy meter topological relation combinations 0 Sum of user sub-tables
Determining the total electric energy W corresponding to the topological relation combination of each electric energy meter 0 User sub-meter sum of topological relation with each electric energy meterThe first electric energy meter topological relation combination with the smallest phase difference;
comparing all metering device lists of the current area by using the first electric energy meter topological relation combination to obtain a first electric energy metering device list to be verified in the field;
the system also comprises an operator, in particular:
acquiring a verification result of whether the power utilization network topological relation attribution of the first electric energy metering device list to be verified in the field is correct or not returned by a worker in the field investigation;
if the topological relation of the metering devices in the corresponding first electric energy metering device list in the verification result judges that the error quantity exceeds a preset threshold value, the electric energy metering device with the correct verification topological relation in the verification result is used as a fixed object in the topological relation of the electric energy meter, and the iteration is carried out in the process of solving the sum phase difference of the total electric energy meter and the sub electric energy meter; thereby obtaining the corresponding total electric energy W 0 User sub-meter sum of topological relation with each electric energy meterThe second electric energy meter topological relation combination with the smallest phase difference;
the staff for field investigation further verifies whether the topological relation of the electric energy metering devices in the corresponding second electric energy metering device list is wrong according to the second electric energy metering device list to be verified in the field, which is determined by the second electric energy meter topological relation combination; and repeating the iterative process until the verification result proves that the topological relation conclusion of the electric energy metering devices recorded in the electric energy metering device list is correct.
7. An exhaustive based regional network topology verification apparatus, the apparatus comprising:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being programmed to perform the exhaustive area network topology verification-based method of any of claims 1-5.
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