Region synchronous line loss management method based on marketing, distribution and dispatching connection

Abstract

The invention relates to a transformer area synchronous line loss management method based on marketing, distribution and dispatching connection. The method comprises the following steps: step 1, constructing a transformer area synchronous line loss calculation model; step 2, constructing a transformer area synchronous line loss index evaluation system; step 3, processing line loss abnormity affecting the distribution transformer area; 4, treating the abnormal line loss data of the transformer area; 5, marketing, distribution and dispatching connection and station area synchronous line loss lean management are achieved; the method has the advantages that data homologous management is ensured, line loss evaluation is accurate, abnormal data is processed, and lean management is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of substation line loss management, and specifically relates to a substation synchronous line loss management method based on the interconnection of operation, distribution and dispatching. Background Art

[0002] Marketing and distribution integration refers to the optimization and integration of the two business systems of distribution network and marketing, to achieve the sharing of marketing and distribution data and information and the coordinated operation of business processes. Its basis is the accuracy of the basic data of distribution transformer substations. In order to promote the in-depth application of marketing and distribution integration, it is necessary to manage the data of substation line losses; the power loss rate of the power grid is referred to as the line loss rate. The four-part line loss management commonly used in line loss management refers to the line loss management method of voltage division, division, line division and substation division for the power grid under its jurisdiction. In layman's terms, it is to carry out statistics, analysis and evaluation of line loss rates according to four statistical dimensions: voltage level, power supply management area, 10kV public line and public distribution substation, and take targeted loss reduction measures to carry out loss reduction management. The line loss management of low-voltage substations is due to its The large number of points and wide range have become the difficulties in line loss management of power grid enterprises. The traditional line loss management of substations is constrained by conditions such as low collection coverage, failure to achieve integration of operation, distribution and dispatching, and low coverage of substation assessment forms. It is impossible to carry out large-scale statistics, analysis and evaluation of line losses in the substations during the same period. It is limited to carrying out statistical line loss analysis in the substations. The statistical line loss in the substations is affected by the different periods of power supply and sales and the quality of manual meter reading. There is a large difference between the statistical line loss rate in the substations and the actual line loss rate in the substations, which affects fault location and restricts the further improvement of the level of line loss management in the substations. Therefore, it is very necessary to provide a method for managing line losses in the substations during the same period based on integration of operation, distribution and dispatching to ensure data homology management, accurate line loss evaluation, abnormal data processing, and lean management. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a synchronous line loss management method for substations based on the integration of marketing, distribution and dispatching, which ensures data homogeneity management, accurate line loss evaluation, abnormal data processing and lean management.

[0004] The object of the present invention is achieved by: a method for managing synchronous line loss in a substation area based on the interconnection of operation, distribution and dispatching, the method comprising the following steps:

[0005] Step 1: Construct a synchronous line loss calculation model for the substation area;

[0006] Step 2: Construct a line loss index evaluation system for the same period in the substation area;

[0007] Step 3: Handle abnormal line loss in distribution transformer area;

[0008] Step 4: Management of abnormal line loss data in the substation area;

[0009] Step 5: Achieve lean management of the integration of marketing, distribution and dispatching and line losses in the substation area at the same time.

[0010] The step 1 of constructing the synchronous line loss calculation model of the substation area specifically includes the following steps:

[0011] Step 1.1: Business data: After the marketing, distribution and dispatching data are connected, the topological connection relationship between the low-voltage meter box and the public transformer is maintained in the power grid GIS system, the corresponding relationship between the low-voltage meter box and the electric energy meter, the comprehensive multiple of the electric energy meter, and the marketing archive information of the main purpose type of the metering point are maintained in the marketing business application system, and the collection data of the electric energy meter exists in the electricity information collection system;

[0012] Step 1.2: Implementation plan: By integrating the relevant data of the power grid GIS system, marketing business application system, and power consumption information collection system, the relevant collection data of all electric energy meters in the low-voltage substation area are obtained. In each calculation cycle, the total active power collection readings of the electric energy meters in the specified time period are taken from the bottom of the meter to calculate the power supply, power sales, and line loss rate of the substation area;

[0013] Step 1.3: Implement the algorithm: Calculate the transformer line loss rate based on the transformer OID as the dimension. The calculation conditions are as follows: all the energy meters in the meter box under the transformer have been adjusted in the collection system and are energy meters for the specified time period; for the energy meters in the master-sub-meter relationship, the main meter settlement power = the main meter reading power - Σ the sub-meter reading power, the sub-meter settlement power = the sub-meter reading power; for the energy meters in the parallel relationship, the total settlement power = ∑ the metering point power in the parallel relationship; the substation line loss rate = (substation power supply - substation power sales) / substation power supply × 100%.

[0014] The construction of the synchronous line loss index evaluation system in the step 2 is specifically as follows: in the calculation of the synchronous line loss in the substation, the synchronous line loss calculable rate of the substation and the synchronous line loss qualified rate of the substation are used to construct the synchronous line loss index system of the substation to evaluate the effectiveness of the line loss management in the substation. The specific index algorithm is as follows: ① The full collection rate of the substation = the number of fully collected substations / the number of connected substations × 100%, the number of fully collected substations refers to all the electric energy meters carried by the meter box under the transformer in the power grid GIS1.6 system have been adjusted in the power consumption information collection system; ② The calculable rate of the synchronous line loss in the substation = the number of calculable substations for the synchronous line loss / the number of connected substations × 100%, the calculable rate of the synchronous line loss The number of substations refers to the number of all electric energy meters carried by the meter box under the transformer in the GS1.6 system of the power grid, and the data collection has been realized and the substation assessment table exists under the transformer; the number of connected substations excludes the high-voltage self-managed household-specific transformer substations with one meter for one household; ③ The qualified rate of line loss in the substation during the same period = the number of qualified substations for line loss in the same period / the number of available substations for line loss in the same period × 100%, the number of available substations for line loss in the same period refers to the number of substations in the substations where the line loss in the same period can be calculated, where the substation assessment table and the user electric energy meter exist and the data of all electric energy meters are collected from the beginning and end of the meter bottom; the number of qualified substations for line loss in the same period refers to the number of substations with a line loss rate greater than or equal to -3% and less than or equal to 9% in the substations where the line loss rate is available in the same period.

[0015] The abnormal processing of line loss affecting the distribution transformer area in step 3 includes the following steps:

[0016] Step 3.1: Calculate the line loss rate of the distribution transformer area;

[0017] Step 3.2: Area line loss control target: The normal standard for the area line loss rate of distribution transformers is 0%-10%; if the area line loss rate is greater than or equal to 10%, the area line loss is judged to be excessive; if the area line loss rate is less than 0%, the area line loss is judged to be negative line loss;

[0018] Step 3.3: A method for managing the correspondence between distribution transformers and meters based on substation identification technology.

[0019] The calculation of the distribution transformer area line loss rate in step 3.1 is specifically as follows: the distribution transformer area line loss rate refers to the ratio of the power value obtained by deducting the total power of all user meters in the area during the same period from the power of the gateway assessment meter installed on the low-voltage side of the transformer in the area to the total power of the gateway assessment meter, and the calculation formula is as follows: Where, L is the line loss rate of the substation area; P k P is the electricity quantity of the area checkpoint assessment table within one metering cycle; t It is the total electricity measured by all users in the substation during the same metering period.

[0020] The distribution transformer and meter correspondence management method based on substation identification technology in step 3.3 adopts a low-voltage substation identification method based on a combination of a pulse current method and an FSK power carrier signal method to perform substation identification. Specifically, the terminal sends out a pulse current signal. After the host detects this pulse current signal, it can be determined that the user belongs to a phase of this distribution transformer. At the same time, the host sends out a power carrier signal. If the terminal receives this carrier signal, it means that the user belongs to this distribution transformer.

[0021] The management of abnormal line loss data in the substation area in step 4 includes the following steps:

[0022] Step 4.1: Treatment methods for excessive line loss in the substation area;

[0023] Step 4.2: Methods for controlling negative line losses in the substation area.

[0024] The method for treating excessive line loss in the transformer area in step 4.1 comprises the following steps:

[0025] Step 4.11: Check whether the correspondence between marketing and utility transformers is correct. If not, perform system maintenance;

[0026] Step 4.12: Query the total power of the substation area, the total power of users and other related information and calculate the line loss;

[0027] Step 4.13: Check whether there is any missing data collection for the household meter in the area. If there is any missing data collection, the power consumption of the missing meter can be queried through the marketing system and the line loss can be estimated. The estimation formula is as follows: Where, L′ is the estimated line loss; P k P is the electricity quantity of the area checkpoint assessment table within one metering cycle; t The total power consumption of normal users in the area is collected within the same metering period; P g Collect the electricity consumption of missing users in the same metering cycle;

[0028] Step 4.14: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the excessive line loss is caused by the household meter collection problem, and the collection equipment of the missing meters should be rectified;

[0029] Step 4.15: After eliminating the reasons for the household meter collection, conduct on-site verification: first check the gateway assessment table, wiring, logical address and TA ratio; if there is a fault in the assessment table, wrong wiring, or logical address corresponding error, the assessment table and the system should be processed; if the TA ratio on site does not correspond to the system, the line loss can be estimated according to the following formula: Where, c' is the on-site TA ratio; c is the system TA ratio;

[0030] Step 4.16: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the reason for the excessive line loss in the substation area is that the on-site TA ratio does not match the system. The TA ratio should be modified in the system.

[0031] Step 4.17: After eliminating the reasons for the metering of the assessment meter, it can be confirmed that the reason for the excessive line loss in the substation is the incorrect correspondence between the distribution transformer and the meter. The substation identification technology can be used to rectify the situation in combination with the system's non-corresponding meter data and the surrounding negative line loss substation conditions, and the missing meters can be systematically maintained.

[0032] The method for controlling the negative line loss in the station area in step 4.2 comprises the following steps:

[0033] Step 4.21: Check whether the correspondence between marketing and utility transformers is correct. If not, perform system maintenance;

[0034] Step 4.22: Query the total power of the substation area, the total power of users and other related information and calculate the line loss;

[0035] Step 4.23: Check whether there is any missing data collection from the household meter in the area. If there is any missing data collection, rectify the data collection equipment of the missing meter. According to the line loss calculation formula of the area, when there is negative line loss in the area, even if the problem of household meter data collection is solved, the line loss cannot be turned positive.

[0036] Step 4.24: Conduct on-site verification, check the gateway assessment table, wiring logic address and TA ratio. If there is a wiring error or assessment table failure, or a logic address correspondence error, process the terminal and system. If the on-site TA ratio does not correspond to the system, estimate the line loss according to formula (1);

[0037] Step 4.25: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the cause of the negative line loss is that the TA ratio on site does not match that of the system. The TA ratio can be modified in the system.

[0038] Step 4.26: After eliminating the measurement reasons of the assessment meter, it can be confirmed that the cause of negative line loss is the incorrect correspondence between the distribution transformer and the meter. The cause of negative line loss in the substation is analyzed as multiple meters. The substation identification technology can be used to eliminate the corresponding erroneous meters and perform system maintenance.

[0039] Beneficial effects of the present invention: The present invention is a synchronous line loss management method for substations based on the integration of marketing, distribution and dispatching. During use, the present invention ensures data homogeneity management by applying the results of marketing, distribution and dispatching data collection and recording, and uses big data statistics and analysis methods, improves the data consistency between the marketing business application and the power grid GS system, improves the consistency between the substation to which the electricity user belongs and the site, avoids the problems of manual meter reading quality and unsuccessful meter reading for electricity consumption information collection, ensures the synchronization of the statistical time points of electricity sales and power supply in the substation, ensures that the calculation results of the line loss in the substation are true and accurate, and ensures that the evaluation of the line loss in the substation is objective and effective; at the same time, the present invention proposes a method for managing negative line loss and super-large line loss data in the substation, effectively improves the efficiency of line loss data management in the substation, improves the level of line loss management in the substation, promotes the improvement of the full collection rate of the substation, and realizes lean management of synchronous line loss in the substation; the present invention has the advantages of ensuring data homogeneity management, accurate line loss evaluation, abnormal data processing, and realizing lean management. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a diagram of the implementation method of calculating the synchronous line loss in the substation area of ​​the present invention.

[0041] Figure 2 This is a diagram of the architecture for calculating line loss in the same period of the transformer area according to the present invention.

[0042] Figure 3 It is a trend diagram of line loss index in the same period of the substation area of ​​the present invention.

[0043] Figure 4 This is a schematic diagram of the station area identification principle of the pulse current method combined with the carrier technology of the present invention.

[0044] Figure 5 The present invention is a flow chart for the treatment of excessive line loss in the substation area.

[0045] Figure 6 The present invention is a flowchart for the treatment of negative line losses in the transformer area. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] Example 1

[0048] like Figure 1-6 As shown, a synchronous line loss management method for a substation based on the interconnection of operation, distribution and dispatching, the method comprises the following steps:

[0049] Step 1: Construct a synchronous line loss calculation model for the substation area;

[0050] In this embodiment, step 1 includes the following steps:

[0051] Step 1.1: Business data: After the marketing, distribution and dispatching data are connected, the topological connection relationship between the low-voltage meter box and the public transformer is maintained in the power grid GIS system, the corresponding relationship between the low-voltage meter box and the electric energy meter, the comprehensive multiple of the electric energy meter, and the marketing archive information of the main purpose type of the metering point are maintained in the marketing business application system, and the collection data of the electric energy meter exists in the electricity information collection system;

[0052] Step 1.2: Implementation plan: By integrating the relevant data of the power grid GIS system, marketing business application system, and power consumption information collection system, the relevant collection data of all electric energy meters in the low-voltage substation area are obtained. In each calculation cycle, the total active power collection readings of the electric energy meters in the specified time period are taken from the bottom of the meter to calculate the power supply, power sales, and line loss rate of the substation area. The specific implementation method is as follows: Figure 1 As shown;

[0053] The power grid GIS system extracts the meter box barcode number, meter box installation address, substation name to which the public transformer connected to the meter box belongs, 10kV line name, transformer business system ID, transformer OID, and transformer name data, and calculates the topological connection relationship between the low-voltage meter box and the public transformer; the marketing business application system extracts the power supply company, power supply station, meter reading section number, meter reader, user number, user name, user address, meter point number, meter point nature, main purpose type, billing relationship type, superior meter point (parallel), asset number, barcode, comprehensive multiple, meter box barcode number and other archival data of electricity users, and calculates the low-voltage users in the substation area and the corresponding electric energy meters of the low-voltage users based on the topological connection relationship between the low-voltage meter box and the public transformer in the power grid GIS system; the electricity consumption information collection system extracts the total active power collection meter bottom data of the electric energy meter at the specified time, and calculates the collection meter bottom at the specified time point in the electricity consumption information collection system based on the electric energy meter corresponding to the low-voltage user in the determined substation area. The implementation scheme architecture is as follows: Figure 2 As shown;

[0054] Step 1.3: Implement the algorithm: Calculate the transformer line loss rate based on the transformer OID as the dimension. The calculation conditions are as follows: all the energy meters carried by the meter box under the transformer have been adjusted in the collection system and are energy meters for the specified time period. The bottom indication 1 and indication 2 of the total active power collection start and end meters have data and the transformer has power supply and power sales; the power supply value range is the total power of the main purpose type of the metering point for the area power supply assessment, and the power sales value range is the total power of the metering point for the nature of settlement, electric card meter, network meter, and local fee control meter; for the energy meter in the master-sub-meter relationship, the main meter settlement power = main meter reading power - ∑ sub-meter reading power, sub-meter settlement power = sub-meter reading power; for the energy meter in the parallel relationship, the total settlement power = ∑ parallel meter point power; the area line loss rate = (area power supply - area sales power) / area power supply × 100%.

[0055] Step 2: Construct a line loss index evaluation system for the same period in the substation area;

[0056] In this embodiment, specifically: in the calculation of the line loss in the same period of the substation area, the full acquisition rate of the substation area, the calculable rate of the line loss in the same period of the substation area, and the qualified rate of the line loss in the same period of the substation area are used, such as Figure 3 As shown in the figure, a line loss index system for the same period of the substation is constructed to evaluate the effectiveness of line loss management in the substation. The specific index algorithm is as follows: ① The full collection rate of the substation = the number of fully collected substations / the number of connected substations × 100%. The number of fully collected substations refers to the number of all the electric energy meters carried by the meter box under the transformer in the power grid GIS1.6 system that have been adjusted in the power consumption information collection system; ② The calculable rate of line loss in the same period of the substation = the number of calculable substations for the same period of line loss / the number of connected substations × 100%. The target value of the calculable rate of line loss in the same period of the substation is 30% in January, and the target values ​​for other months increase by 5% each month. The target value score is 100%. For every 0.1% lower the completion value than the target value, the index score is reduced by 0.1%; the number of calculable substations for the same period of line loss refers to the number of all the electric energy meters carried by the meter box under the transformer in the power grid GS1.6 system that have achieved collection and there are substations under the transformer. Table verification; the number of connected substations excludes high-voltage self-managed household-specific transformer substations with one meter for one household; ③ Substation line loss qualification rate for the same period = number of substations with qualified line loss for the same period / number of substations with available line loss for the same period × 100%, the January target value for the substation line loss qualification rate for the same period is 55%, and the target values ​​for other months increase by 3% each month. The target score is 100%, and for every 0.1% lower than the target value, 0.1% of the index score is reduced; the number of substations with available line loss for the same period refers to the number of substations in the substations where the substation assessment table and user electricity meters are available and data is collected from the beginning and end of all electricity meters among the substations where the line loss for the same period is available; the number of substations with qualified line loss for the same period refers to the number of substations with a line loss rate greater than or equal to -3% and less than or equal to 9% among the substations with available line loss for the same period (light-load substations with 0kWh≤daily power supply and electricity sales≤50kWh are all regarded as qualified substations with line loss for the same period).

[0057] Step 3: Handle abnormal line loss in distribution transformer area;

[0058] Step 4: Management of abnormal line loss data in the substation area;

[0059] Step 5: Achieve lean management of the integration of marketing, distribution and dispatching and line losses in the substation area at the same time.

[0060] The present invention is a synchronous line loss management method for a substation based on the interconnection of marketing, distribution and dispatching. During use, the present invention ensures data homogeneity management by applying the results of data collection and recording of the interconnection of marketing, distribution and dispatching, and using big data statistics and analysis methods, thereby improving the consistency of data between the marketing business application and the GS system of the power grid, improving the consistency between the substation to which the electricity user belongs and the site, avoiding the problems of manual meter reading quality and unsuccessful meter reading for electricity consumption information collection, ensuring the synchronization of the statistical time points of electricity sales and power supply in the substation, ensuring that the calculation results of the line loss in the substation are true and accurate, and ensuring that the evaluation of the line loss in the substation is objective and effective; at the same time, the present invention proposes a method for managing negative line loss and super-large line loss data in the substation, effectively improving the efficiency of line loss data management in the substation, improving the level of line loss management in the substation, promoting the improvement of the full collection rate of the substation, and realizing lean management of synchronous line loss in the substation; the present invention has the advantages of ensuring data homogeneity management, accurate line loss evaluation, abnormal data processing, and realizing lean management.

[0061] Example 2

[0062] like Figure 1-6 As shown, a synchronous line loss management method for a substation based on the interconnection of operation, distribution and dispatching, the method comprises the following steps:

[0063] Step 1: Construct a synchronous line loss calculation model for the substation area;

[0064] Step 2: Construct a line loss index evaluation system for the same period in the substation area;

[0065] Step 3: Handle abnormal line loss in distribution transformer area;

[0066] In this embodiment, step 3 includes the following steps:

[0067] Step 3.1: Calculate the line loss rate of the distribution transformer area;

[0068] Specifically, the line loss rate of the distribution transformer area refers to the ratio of the power value obtained by subtracting the total power of all user meters in the area during the same period from the power value of the gateway assessment meter installed on the low-voltage side of the transformer in the area to the total power of the gateway assessment meter. The calculation formula is as follows: Where, L is the line loss rate of the substation area; P k P is the electricity quantity of the area checkpoint assessment table within one metering cycle; t It is the total electricity measured by all users in the substation during the same metering period.

[0069] Step 3.2: Area line loss control target: The normal standard for the area line loss rate of distribution transformers is 0%-10%; if the area line loss rate is greater than or equal to 10%, the area line loss is judged to be excessive; if the area line loss rate is less than 0%, the area line loss is judged to be negative line loss;

[0070] Step 3.3: A method for managing the correspondence between distribution transformers and meters based on substation identification technology.

[0071] The low voltage area identification method based on the combination of pulse current method and FSK power carrier signal method is used for area identification. Specifically, the principle of area identification is as follows: Figure 4 As shown, the terminal sends out a pulse current signal. After the host detects the pulse current signal, it can be determined that the user belongs to a phase of the distribution transformer. At the same time, the host sends out a power carrier signal. If the terminal receives the carrier signal, it means that the user belongs to the distribution transformer. Since the pulse current signal will not propagate to other lines and the transmission distance is long, this method can be used to accurately and reliably identify all users under the distribution transformer area.

[0072] Step 4: Management of abnormal line loss data in the substation area;

[0073] In this embodiment, step 4 includes the following steps:

[0074] Step 4.1: Treatment methods for excessive line loss in the substation area;

[0075] The following steps are involved:

[0076] Step 4.11: Check whether the correspondence between marketing and utility transformers is correct. If not, perform system maintenance;

[0077] Step 4.12: Query the total power of the substation area, the total power of users and other related information and calculate the line loss;

[0078] Step 4.13: Check whether there is any missing data collection for the household meter in the area. If there is any missing data collection, the power consumption of the missing meter can be queried through the marketing system and the line loss can be estimated. The estimation formula is as follows: Where, L′ is the estimated line loss; P k P is the electricity quantity of the area checkpoint assessment table within one metering cycle; t The total power consumption of normal users in the area is collected within the same metering period; P g Collect the electricity consumption of missing users in the same metering cycle;

[0079] Step 4.14: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the excessive line loss is caused by the household meter collection problem, and the collection equipment of the missing meters should be rectified;

[0080] Step 4.15: After eliminating the reasons for the household meter collection, conduct on-site verification: first check the gateway assessment table, wiring, logical address and TA ratio; if there is a fault in the assessment table, wrong wiring, or logical address corresponding error, the assessment table and the system should be processed; if the TA ratio on site does not correspond to the system, the line loss can be estimated according to the following formula: Where, c' is the on-site TA ratio; c is the system TA ratio;

[0081] Step 4.16: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the reason for the excessive line loss in the substation area is that the on-site TA ratio does not match the system. The TA ratio should be modified in the system.

[0082] Step 4.17: After eliminating the cause of the meter measurement, it can be confirmed that the reason for the excessive line loss in the substation is the incorrect correspondence between the distribution transformer and the meter. The substation identification technology can be used to rectify the situation by combining the system's non-corresponding meter data and the surrounding negative line loss substation conditions, and the missing meter can be systematically maintained; the treatment process for excessive line loss is as follows: Figure 5 shown.

[0083] Step 4.2: Methods for controlling negative line losses in the substation area.

[0084] The following steps are involved:

[0085] Step 4.21: Check whether the correspondence between marketing and utility transformers is correct. If not, perform system maintenance;

[0086] Step 4.22: Query the total power of the substation area, the total power of users and other related information and calculate the line loss;

[0087] Step 4.23: Check whether there is any missing data collection from the household meter in the area. If there is any missing data collection, rectify the data collection equipment of the missing meter. According to the line loss calculation formula of the area, when there is negative line loss in the area, even if the problem of household meter data collection is solved, the line loss cannot be turned positive.

[0088] Step 4.24: Conduct on-site verification, check the gateway assessment table, wiring logic address and TA ratio. If there is a wiring error or assessment table failure, or a logic address correspondence error, process the terminal and system. If the on-site TA ratio does not correspond to the system, estimate the line loss according to formula (1);

[0089] Step 4.25: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the cause of the negative line loss is that the TA ratio on site does not match that of the system. The TA ratio can be modified in the system.

[0090] Step 4.26: Eliminate the measurement reasons of the assessment meter. It can be confirmed that the cause of negative line loss is the incorrect correspondence between the distribution transformer and the meter. The cause of negative line loss in the substation is analyzed as multiple meters. The substation identification technology can be used to eliminate the corresponding wrong meters and perform system maintenance. The process of negative line loss management is as follows: Figure 6 shown.

[0091] Step 5: Achieve lean management of the integration of marketing, distribution and dispatching and line losses in the substation area at the same time.

[0092] described.

[0093] The present invention is a synchronous line loss management method for a substation based on the interconnection of marketing, distribution and dispatching. During use, the present invention ensures data homogeneity management by applying the results of data collection and recording of the interconnection of marketing, distribution and dispatching, and using big data statistics and analysis methods, thereby improving the consistency of data between the marketing business application and the GS system of the power grid, improving the consistency between the substation to which the electricity user belongs and the site, avoiding the problems of manual meter reading quality and unsuccessful meter reading for electricity consumption information collection, ensuring the synchronization of the statistical time points of electricity sales and power supply in the substation, ensuring that the calculation results of the line loss in the substation are true and accurate, and ensuring that the evaluation of the line loss in the substation is objective and effective; at the same time, the present invention proposes a method for managing negative line loss and super-large line loss data in the substation, effectively improving the efficiency of line loss data management in the substation, improving the level of line loss management in the substation, promoting the improvement of the full collection rate of the substation, and realizing lean management of synchronous line loss in the substation; the present invention has the advantages of ensuring data homogeneity management, accurate line loss evaluation, abnormal data processing, and realizing lean management.

Claims

1. A synchronous line loss management method for a substation based on the integration of marketing, distribution and dispatching, characterized by: The method comprises the following steps: Step 1: Construct a synchronous line loss calculation model for the substation area; Step 2: Construct a line loss index evaluation system for the same period in the substation area; Step 3: Handle abnormal line loss in distribution transformer area; Step 4: Management of abnormal line loss data in the substation area; Step 5: Achieve lean management of the integration of marketing, distribution and dispatching and line losses in the substation area at the same time.

2. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 1, characterized in that: The step 1 of constructing the synchronous line loss calculation model of the substation area specifically includes the following steps: Step 1.1: Business data: After the marketing, distribution and dispatching data are connected, the topological connection relationship between the low-voltage meter box and the public transformer is maintained in the power grid GIS system, the corresponding relationship between the low-voltage meter box and the electric energy meter, the comprehensive multiple of the electric energy meter, and the marketing archive information of the main purpose type of the metering point are maintained in the marketing business application system, and the collection data of the electric energy meter exists in the electricity information collection system; Step 1.2: Implementation plan: By integrating the relevant data of the power grid GIS system, marketing business application system, and power consumption information collection system, the relevant collection data of all electric energy meters in the low-voltage substation area are obtained. In each calculation cycle, the total active power collection readings of the electric energy meters in the specified time period are taken from the bottom of the meter to calculate the power supply, power sales, and line loss rate of the substation area; Step 1.3: Implement the algorithm: Calculate the transformer line loss rate based on the transformer OID as the dimension. The calculation conditions are as follows: all the energy meters in the meter box under the transformer have been adjusted in the collection system and are energy meters for the specified time period; for the energy meters in the master-sub-meter relationship, the main meter settlement power = the main meter reading power - Σ the sub-meter reading power, the sub-meter settlement power = the sub-meter reading power; for the energy meters in the parallel relationship, the total settlement power = ∑ the metering point power in the parallel relationship; the substation line loss rate = (substation power supply - substation power sales) / substation power supply × 100%.

3. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 1, characterized in that: The construction of the synchronous line loss index evaluation system in the step 2 is specifically as follows: in the calculation of the synchronous line loss in the substation, the synchronous line loss calculable rate of the substation and the synchronous line loss qualified rate of the substation are used to construct the synchronous line loss index system of the substation to evaluate the effectiveness of the line loss management in the substation. The specific index algorithm is as follows: ① The full collection rate of the substation = the number of fully collected substations / the number of connected substations × 100%, the number of fully collected substations refers to all the electric energy meters carried by the meter box under the transformer in the power grid GIS1.6 system have been adjusted in the power consumption information collection system; ② The calculable rate of the synchronous line loss in the substation = the number of calculable substations for the synchronous line loss / the number of connected substations × 100%, the calculable rate of the synchronous line loss The number of substations refers to the number of all electric energy meters carried by the meter box under the transformer in the GS1.6 system of the power grid, and the data collection has been realized and the substation assessment table exists under the transformer; the number of connected substations excludes the high-voltage self-managed household-specific transformer substations with one meter for one household; ③ The qualified rate of line loss in the substation during the same period = the number of qualified substations for line loss in the same period / the number of available substations for line loss in the same period × 100%, the number of available substations for line loss in the same period refers to the number of substations in the substations where the line loss in the same period can be calculated, where the substation assessment table and the user electric energy meter exist and the data of all electric energy meters are collected from the beginning and end of the meter bottom; the number of qualified substations for line loss in the same period refers to the number of substations with a line loss rate greater than or equal to -3% and less than or equal to 9% in the substations where the line loss rate is available in the same period.

4. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 1, characterized in that: The abnormal processing of line loss affecting the distribution transformer area in step 3 includes the following steps: Step 3.1: Calculate the line loss rate of the distribution transformer area; Step 3.2: Area line loss control target: The normal standard for the area line loss rate of distribution transformers is 0%-10%; if the area line loss rate is greater than or equal to 10%, the area line loss is judged to be excessive; if the area line loss rate is less than 0%, the area line loss is judged to be negative line loss; Step 3.3: A method for managing the correspondence between distribution transformers and meters based on substation identification technology.

5. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 4, characterized in that: The calculation of the distribution transformer area line loss rate in step 3.1 is specifically as follows: the distribution transformer area line loss rate refers to the ratio of the power value obtained by deducting the total power of all user meters in the area during the same period from the power of the gateway assessment meter installed on the low-voltage side of the transformer in the area to the total power of the gateway assessment meter, and the calculation formula is as follows: Where, L is the line loss rate of the substation area; P k P is the electricity quantity of the area checkpoint assessment table within one metering cycle; t It is the total electricity measured by all users in the substation during the same metering period.

6. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 4, characterized in that: The distribution transformer and meter correspondence management method based on substation identification technology in step 3.3 adopts a low-voltage substation identification method based on a combination of a pulse current method and an FSK power carrier signal method to perform substation identification. Specifically, the terminal sends out a pulse current signal. After the host detects this pulse current signal, it can be determined that the user belongs to a phase of this distribution transformer. At the same time, the host sends out a power carrier signal. If the terminal receives this carrier signal, it means that the user belongs to this distribution transformer.

7. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 1, characterized in that: The management of abnormal line loss data in the substation area in step 4 includes the following steps: Step 4.1: Treatment methods for excessive line loss in the substation area; Step 4.2: Methods for controlling negative line losses in the substation area.

8. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 7, characterized in that: The method for treating excessive line loss in the transformer area in step 4.1 comprises the following steps: Step 4.11: Check whether the correspondence between marketing and utility transformers is correct. If not, perform system maintenance; Step 4.12: Query the total power of the substation area, the total power of users and other related information and calculate the line loss; Step 4.13: Check whether there is any missing data collection for the household meter in the area. If there is any missing data collection, the power consumption of the missing meter can be queried through the marketing system and the line loss can be estimated. The estimation formula is as follows: Where, L′ is the estimated line loss; P k P is the electricity quantity of the area checkpoint assessment table within one metering cycle; t The total power consumption of normal users in the area is collected within the same metering period; P g Collect the electricity consumption of missing users in the same metering cycle; Step 4.14: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the excessive line loss is caused by the household meter collection problem, and the collection equipment of the missing meters should be rectified; Step 4.15: After eliminating the reasons for the household meter collection, conduct on-site verification: first check the gateway assessment table, wiring, logical address and TA ratio; if there is a fault in the assessment table, wrong wiring, or logical address corresponding error, the assessment table and the system should be processed; if the TA ratio on site does not correspond to the system, the line loss can be estimated according to the following formula: Where, c' is the on-site TA ratio; c is the system TA ratio; Step 4.16: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the reason for the excessive line loss in the substation area is that the on-site TA ratio does not match the system. The TA ratio should be modified in the system. Step 4.17: After eliminating the reasons for the metering of the assessment meter, it can be confirmed that the reason for the excessive line loss in the substation is the incorrect correspondence between the distribution transformer and the meter. The substation identification technology can be used to rectify the situation in combination with the system's non-corresponding meter data and the surrounding negative line loss substation conditions, and the missing meters can be systematically maintained.

9. A synchronous line loss management method for a substation area based on the integration of operation, distribution and dispatching as claimed in claim 7, characterized in that: The method for controlling the negative line loss in the station area in step 4.2 comprises the following steps: Step 4.21: Check whether the correspondence between marketing and utility transformers is correct. If not, perform system maintenance; Step 4.22: Query the total power of the substation area, the total power of users and other related information and calculate the line loss; Step 4.23: Check whether there is any missing data collection from the household meter in the area. If there is any missing data collection, rectify the data collection equipment of the missing meter. According to the line loss calculation formula of the area, when there is negative line loss in the area, even if the problem of household meter data collection is solved, the line loss cannot be turned positive. Step 4.24: Conduct on-site verification, check the gateway assessment table, wiring logic address and TA ratio. If there is a wiring error or assessment table failure, or a logic address correspondence error, process the terminal and system. If the on-site TA ratio does not correspond to the system, estimate the line loss according to formula (1); Step 4.25: Determine whether the estimated line loss is normal. If it is normal, it can be determined that the cause of the negative line loss is that the TA ratio on site does not match that of the system. The TA ratio can be modified in the system. Step 4.26: After eliminating the measurement reasons of the assessment meter, it can be confirmed that the cause of negative line loss is the incorrect correspondence between the distribution transformer and the meter. The cause of negative line loss in the substation is analyzed as multiple meters. The substation identification technology can be used to eliminate the corresponding erroneous meters and perform system maintenance.

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