CN111579928B - Distribution line loss analysis method and analysis device - Google Patents
Distribution line loss analysis method and analysis device Download PDFInfo
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- CN111579928B CN111579928B CN202010449070.0A CN202010449070A CN111579928B CN 111579928 B CN111579928 B CN 111579928B CN 202010449070 A CN202010449070 A CN 202010449070A CN 111579928 B CN111579928 B CN 111579928B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
Abstract
The invention provides a distribution line loss analysis device, which comprises: the input module is used for reading an input data table; the data interface module is used for carrying out data interaction with the electricity utilization acquisition system, the electric energy system, the PMS system, the dispatching operation ticket system and the state network synchronous line loss system; the processing module is used for operating a computer program to realize the steps of the distribution line loss analysis method; and the output module is used for outputting an analysis output table according to the line loss analysis result. The invention also provides a distribution line loss analysis method. The invention not only saves working hours, but also improves the accuracy and greatly improves the working efficiency of analysis and investigation of line loss workers.
Description
Technical Field
The invention relates to the field of power system automation, in particular to a distribution line loss analysis method and an analysis device.
Background
Along with the construction requirements of a national grid on a lean power grid and a three-type two-network system, power grid workers need to find abnormal line loss lines through a national grid synchronous line loss system, locate public and private variables causing abnormal line loss, and analyze the accuracy of line variable relations and variable table relations, but at present, the line loss system, the power utilization acquisition system, the electric energy system and the PMS mainly use manpower and spend a lot of time and energy to match the IDs of all equipment units and the relations of superior equipment, and manually analyze line monthly loss electric quantity, daily loss electric quantity and the line variable relations and variable table relations of public and private variable users, the line loss abnormal point location is also mainly determined through manual analysis, and a lot of time is consumed, the workload is large, and errors are easy to occur.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a distribution line loss analysis method and a distribution line loss analysis device, which can intelligently match the IDs of all equipment units and analyze the problems of non-correspondence of various public and private variable line variable relations, non-correspondence of variable table relations and the like, and the current 'manual search and sorting' is upgraded into 'full-automatic intelligent comparison and analysis', so that the working hours are saved, the accuracy is improved, and the analysis and troubleshooting working efficiency of line loss workers is greatly improved. The technical scheme adopted by the invention is as follows:
the embodiment of the invention provides a distribution line loss analysis method, which comprises the following steps:
step S1, reading the line to be analyzed and the time slot of the line loss to be analyzed by reading in the input data table;
step S2, finding out the related information of the dual-power users and the transformer area and the same-pole dual-loop information in the line in the power utilization acquisition system and the PMS through the line name and the line ID;
step S3, searching the daily line loss rate, the daily power supply amount and the power supply metering point multiplying power of the line in the national grid synchronization line loss system in the time period of line loss to be analyzed through the line name and the line ID; continuously searching the daily power supply and the power supply metering point multiplying power of the line in the electric energy system in the time period of line loss needing to be analyzed through the line name and the line ID; taking related data in the electric energy system as source end data, comparing daily power supply quantity and power supply metering point multiplying power of the line in the national grid contemporaneous line loss system and the electric energy system, if the data are inconsistent, an output line loss abnormal point is power supply quantity, an abnormal type is power supply quantity not matched with the source end data, and an abnormal date is a date for comparing the daily power supply quantity in the two systems to be inconsistent;
step S4, if comparing the daily power supply amount and the power supply metering point multiplying power in the national network synchronization line loss system and the electric energy system, the data are consistent, and searching the information that the line operation mode changes in the dispatching operation ticket system by taking the line name as a key word and the line loss time period needing to be analyzed, so as to bring the time for supplying; if the line is required to be analyzed and supplied by other lines in the supply time period, and the line loss rate is a negative value, the abnormal point of the output line loss is 'line operation mode change', the abnormal type is 'line is supplied by line', and the abnormal time period is the supply time period; if the circuit needs to be analyzed to be supplied to other circuits in the supply time period, and the line loss rate is a positive value, the abnormal point of the output line loss is 'circuit operation mode change', the abnormal type is 'circuit supply with line', and the abnormal time period is the supply time period;
step S5, if the relevant information that the line running mode changes can not be searched in the dispatching operation ticket system, comparing the public and private variable information of the PMS system with the public and private variable relevant data in the national network contemporaneous line loss system and the PMS system by taking the public and private variable information of the PMS system as source end data;
step S6, if the relevant data of the public and private variables in the matching state network synchronization line loss system and the PMS system are consistent, comparing whether the public and private variable electricity selling quantity information in the state network synchronization line loss system is abnormal or not by taking the public and private variable electricity selling quantity information of the electricity acquisition system as source end data;
and step S7, if the public and private variable electricity selling quantity data in the matching state network synchronization system and the electricity utilization acquisition system are consistent, adopting one or more line loss analysis strategies to carry out line loss analysis.
Further, step S5 specifically includes: searching user numbers and user names of all high-voltage users under the line in the national grid synchronization line loss system in the line loss time period to be analyzed, and station area names and station area IDs of all public transformers through the line name and the line ID; one high-voltage user corresponds to one or more special variables; continuously searching user numbers and user names of all high-voltage users under the line in the PMS in the time period of line loss needing to be analyzed, and station area names and station area IDs of all public transformers in the line loss time period through the line name and the line ID; and comparing relevant data of public and private variables in the national network contemporaneous line loss system and the PMS system by taking the grid structure in the PMS system as source end data, wherein if the data are inconsistent, the output line loss abnormal point is a high-voltage user number, a user name, a station area name and a station area ID of the public and private variables which are inconsistent, the abnormal type is 'the grid structure is not matched with the PMS system', and the abnormal date is the current date.
Further, step S6 specifically includes: searching user numbers, user names, user metering point IDs and user daily electricity sales quantities of all high-voltage users under the line in the national network synchronization line loss system in the line loss time period needing to be analyzed, and station area names, station area IDs, station area general table metering point IDs and station area general table daily electricity sales quantities of all public transformers through the line names and the line IDs; searching the daily electricity sales amount of the user or the daily electricity sales amount of the table area general table within the time period of line loss analysis required by the user through the user number, the user name, the user metering point ID or the common table area name, the table area ID and the table area general table metering point ID in the electricity acquisition system; and comparing the electricity consumption acquisition system as source end data with electricity consumption sold in the national grid synchronous line loss system and the electricity consumption acquisition system, if the data are inconsistent, comparing inconsistent high-voltage user numbers, user names, public transformer area names and area IDs, determining that the abnormal type is 'the electricity consumption sold is not matched with the data in the electricity consumption acquisition system', and comparing inconsistent electricity consumption sold in the two systems on an abnormal date.
Further, the line loss analysis strategy comprises:
the first line loss analysis strategy adopts a time shifting method; analyzing the public and special change and the electricity selling quantity difference on the line of the positive and negative reversal time points of the line loss rate; searching the daily line loss rate of the line, the user numbers of all high-voltage users, the user names, the user metering point IDs and the user daily electricity sales quantities of all public transformer distribution area names, the distribution area IDs, the distribution area general table metering point IDs and the distribution area general table daily electricity sales quantities of all public transformer distribution areas in a national network synchronization line loss system in a line loss time period to be analyzed through the line names and the line IDs; tracing the time point when the daily loss rate is changed from qualified to unqualified from time, and comparing and analyzing the number of users, the number of public transformer areas, the user metering points, the ID of the transformer areas, the daily electricity selling condition of the users and the daily electricity selling condition of a total table of the transformer areas on two days before and after the change of the daily loss rate; if the change exceeds the allowable range, outputting a corresponding abnormal type;
the second line loss analysis strategy adopts a stacking method; carrying out curve fitting on the daily electricity selling quantity and the daily electricity supply quantity of each public and special transformer on the line; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; performing curve fitting of the sum of the daily power supply quantity and the daily electricity sales quantity of the line in a time period in which the line loss of the line needs to be analyzed, trying to remove the influence of a certain distribution area or a user on the curve fitting degree of the sum of the daily power supply quantity and the daily electricity sales quantity one by one through an elimination method, and outputting a corresponding abnormal type if the change of the curve fitting degree exceeds a set allowable range;
a third line loss analysis strategy adopts a comparison method; analyzing the change condition of daily electricity sales on the line under the condition of small difference of daily electricity supply quantity; searching the daily power supply quantity, the daily line loss rate, the user numbers, the user names, the user metering point IDs and the user daily electricity sales quantities of the lines in the national grid synchronization line loss system in the line loss time period needing to be analyzed through the line names and the line IDs, and the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily electricity sales quantities of all public changes; in the time period of line loss needing to be analyzed and within one month before and after the time period, finding two days in which the difference of daily power supply quantity is smaller than a set percentage and the difference of daily line loss rate exceeds a set threshold, and comparing and analyzing the change conditions of the number of users, the number of common station areas, user metering points and station area IDs of the two days in which the difference of daily line loss rate exceeds the set threshold; if the change condition exceeds the corresponding allowable range, outputting a corresponding abnormal type;
a fourth line loss analysis strategy adopts an alternative method; the dual-power supply user metering points exchange daily electricity sales to verify the correctness of the primary and standby supply metering point change table relation; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; calculating the daily line loss rate (line loss rate is (power supply amount-electricity sales sum)/power supply amount is 100%) in a time period in which the line loss needs to be analyzed, and calculating whether the daily line loss rate can be recovered to a normal range or not in the time period after a dual-power-supply user tries to replace the daily electricity sales of an original metering point with the daily electricity sales of another metering point one by one, and if so, outputting a corresponding abnormal type;
the fifth line loss analysis strategy adopts another alternative method; increasing the daily electricity selling quantity of the other line user in the same-pole double-loop or removing the daily electricity selling quantity of the users in the same-pole double-loop section of the line to be analyzed so as to verify the correctness of the subscriber line variation relationship; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; calculating the daily loss rate in a time period in which the line loss of the line needs to be analyzed, and calculating whether the daily loss rate can be recovered to a normal range in the time period or not after deleting the same-pole double-loop users and the station areas on the line needing to be analyzed one by one or deleting the users and the station areas in a combined mode, and if so, outputting a corresponding abnormal type; after trying to increase or combining and increasing users and transformer areas on the same-pole double-loop of the line to be analyzed one by one, calculating whether the daily line loss rate in the period of time can be recovered to a normal range or not, and if so, outputting a corresponding abnormal type;
the sixth line loss analysis strategy adopts an elimination method; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; and calculating the daily line loss rate in the time period in which the line loss needs to be analyzed, and trying to remove a certain distribution area or a user one by one through an elimination method, and judging whether the daily line loss rate can be recovered to a normal range or not, and if so, outputting a corresponding abnormal type.
The embodiment of the present invention further provides a distribution line loss analysis apparatus, including:
the input module is used for reading an input data table;
the data interface module is used for carrying out data interaction with the electricity utilization acquisition system, the electric energy system, the PMS system, the dispatching operation ticket system and the state network synchronous line loss system;
the processing module is used for operating a computer program to realize the steps of the distribution line loss analysis method;
and the output module is used for outputting an analysis output table according to the line loss analysis result.
The invention has the advantages that:
1) the full-automatic intelligent comparison and analysis are realized, manual analysis and intervention are reduced, and the working efficiency and the accuracy are greatly improved.
2) The analysis device is mutually independent with the electricity acquisition system, the electric energy system, the PMS (power generation management system), the dispatching operation ticket system and the state network synchronous line loss system, and only needs to exchange data through a communication interface.
3) The mode is flexible, and various logic criteria and strategies can be customized.
4) The application range is wide, and the later stage can be integrated in a national network synchronization line loss system as an independent module.
Drawings
Fig. 1 is a schematic diagram of a distribution line loss analysis apparatus according to an embodiment of the present invention.
Fig. 2 is a flow chart of a distribution line loss analysis method according to an embodiment of the invention.
Detailed Description
The invention is further illustrated by the following specific figures and examples.
An embodiment of the present invention provides an apparatus for analyzing line loss of a distribution line, as shown in fig. 1, including:
the input module is used for reading an input data table;
the data interface module is used for carrying out data interaction with a power utilization acquisition system, an electric energy system, a PMS (power generation management system), a dispatching operation ticket system and a state network synchronous line loss system;
the processing module is used for operating a computer program to realize the steps of the distribution line loss analysis method;
and the output module is used for outputting an analysis output table according to the line loss analysis result.
The embodiment of the invention provides a distribution line loss analysis method, which comprises the following steps:
step S1, reading the line to be analyzed and the time slot of the line loss to be analyzed by reading in the input data table;
the relevant fields of the input data table are shown in table 1;
| line name | Line ID | Date of initiation | Expiration date |
TABLE 1
Step S2, finding out the related information of the dual-power users and the transformer area and the same-pole dual-loop information in the line in the power utilization acquisition system and the PMS through the line name and the line ID;
the related information of the dual power supply users and the transformer area is obtained through the read data table of the dual power supply users and the transformer area, and is shown in a table 2;
TABLE 2
The same-pole double-loop information is obtained through the read same-pole double-loop data table, and is shown in a table 3;
TABLE 3
Step S3, searching the daily line loss rate, the daily power supply amount and the power supply metering point multiplying power of the line in the national grid synchronization line loss system in the time period of line loss to be analyzed through the line name and the line ID; continuously searching the daily power supply and the power supply metering point multiplying power of the line in the electric energy system in the time period of line loss needing to be analyzed through the line name and the line ID; taking related data in the electric energy system as source end data, comparing daily power supply quantity and power supply metering point multiplying power of the line in the national grid contemporaneous line loss system and the electric energy system, if the data are inconsistent, an output line loss abnormal point is power supply quantity, an abnormal type is power supply quantity not matched with the source end data, and an abnormal date is a date for comparing the daily power supply quantity in the two systems to be inconsistent; if the date of the match state network synchronization line loss system is inconsistent with the date of the daily power supply inconsistency of the electric energy system, outputting the data in multiple lines;
step S4, if comparing the daily power supply and the power supply metering point multiplying power in the national network synchronization line loss system and the electric energy system, the data are consistent, and searching the information (namely the information of line with supply and the information of being provided with supply) of the line running mode in the dispatching operation ticket system with the line name as a key word and the line loss time period needing to be analyzed, wherein the information of line running mode change is provided with the supply time; if the line is required to be analyzed and supplied by other lines in the supply time period, and the line loss rate is a negative value, the abnormal point of the output line loss is 'line operation mode change', the abnormal type is 'line is supplied by line', and the abnormal time period is the supply time period; if the circuit needs to be analyzed to be supplied to other circuits in the supply time period, and the line loss rate is a positive value, the abnormal point of the output line loss is 'circuit operation mode change', the abnormal type is 'circuit supply with line', and the abnormal time period is the supply time period; if multiple band supply and band supply occur in the analysis time period, outputting in multiple bands;
step S5, if the relevant information that the line running mode changes can not be searched in the dispatching operation ticket system, comparing the public and private variable information of the PMS system with the public and private variable relevant data in the national network contemporaneous line loss system and the PMS system by taking the public and private variable information of the PMS system as source end data; the method comprises the following specific steps:
searching user numbers and user names of all high-voltage users under the line in the national grid synchronization line loss system in the line loss time period to be analyzed, and station area names and station area IDs of all public transformers through the line name and the line ID; one high-voltage user corresponds to one or more special variables; continuously searching user numbers and user names of all high-voltage users under the line in the PMS in the time period of line loss needing to be analyzed, and station area names and station area IDs of all public transformers in the line loss time period through the line name and the line ID; comparing relevant data of public and private variables in a national network contemporaneous line loss system and a PMS system by taking a grid structure in the PMS system (namely the conditions of all high-voltage users and the public and private variables) as source end data, wherein if the data are inconsistent, the output line loss abnormal points are the high-voltage user number, the user name, the public and private variable area name and the area ID which are inconsistent in comparison, the abnormal type is 'the grid structure is not matched with the PMS system', and the abnormal date is the current date (the PMS system does not store historical grid structure information, so the abnormal date is the current date);
step S6, if the relevant data of the public and private variables in the matching state network synchronization line loss system and the PMS system are consistent, comparing whether the public and private variable electricity selling quantity information in the state network synchronization line loss system is abnormal or not by taking the public and private variable electricity selling quantity information of the electricity acquisition system as source end data; the method comprises the following specific steps:
searching user numbers, user names, user metering point IDs and user daily electricity sales quantities of all high-voltage users under the line in the national network synchronization line loss system in the line loss time period needing to be analyzed, and station area names, station area IDs, station area general table metering point IDs and station area general table daily electricity sales quantities of all public transformers through the line names and the line IDs; searching the daily electricity sales amount of the user or the daily electricity sales amount of the table area general table within the time period of line loss analysis required by the user through the user number, the user name, the user metering point ID or the common table area name, the table area ID and the table area general table metering point ID in the electricity acquisition system; comparing the electricity consumption acquisition system as source end data with electricity consumption (including daily electricity consumption of users and daily electricity consumption of a station district general table) in a national grid synchronous line loss system and the electricity consumption acquisition system, wherein if the data are inconsistent, the abnormal point of the output line loss is a high-voltage user number, a user name, a station district name and a station district ID which are inconsistent in comparison, the abnormal type is 'the electricity consumption is not matched with the data in the electricity consumption acquisition system', and the abnormal date is the date of the inconsistency of the electricity consumption in the two systems in comparison; if the date of the inconsistent electricity sales of the national network synchronization line loss matching system and the electricity utilization acquisition system is discontinuous, outputting the electricity sales in multiple lines;
step S7, if the public and private variable electricity selling quantity data in the matching state network synchronization system and the electricity utilization acquisition system are consistent, adopting any one or more of the following line loss analysis strategies to carry out line loss analysis;
s701, adopting a time shifting method for a first line loss analysis strategy;
analyzing the public and special change and the electricity selling quantity difference on the line of the positive and negative reversal time points of the line loss rate; searching the daily line loss rate of the line, the user numbers of all high-voltage users, the user names, the user metering point IDs and the user daily electricity sales quantities of all public transformer distribution area names, the distribution area IDs, the distribution area general table metering point IDs and the distribution area general table daily electricity sales quantities of all public transformer distribution areas in a national network synchronization line loss system in a line loss time period to be analyzed through the line names and the line IDs; tracing the time point when the daily loss rate is changed from qualified to unqualified from time, and comparing and analyzing the number of users, the number of public transformer areas, the user metering points, the ID of the transformer areas, the daily electricity selling condition of the users and the daily electricity selling condition of a total table of the transformer areas on two days before and after the change of the daily loss rate; if the change exceeds the allowable range, outputting a corresponding abnormal type; for example, if there is one or more users or one or more distribution areas and the daily electricity sales amount is large (5 times or more than the original electricity sales amount), the output anomaly type is "the line loss is greatly changed at one × time through comparison analysis, and the cause may be' that. . . ' ", other fields are null; for example: through comparison and analysis, the line loss changes greatly in 2 months and 1 day, and the cause may be '1120013030 sudden increase of the daily electricity sales of users';
s702, adopting a stacking method for a second line loss analysis strategy;
carrying out curve fitting on the daily electricity selling quantity and the daily electricity supply quantity of each public and special transformer on the line; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; performing curve fitting of the sum of the daily power supply quantity and the daily electricity sales quantity of the line in a time period in which the line loss of the line needs to be analyzed, trying to remove the influence of a certain distribution area or a user on the curve fitting degree of the sum of the daily power supply quantity and the daily electricity sales quantity one by one through an elimination method, and outputting a corresponding abnormal type if the change of the curve fitting degree exceeds a set allowable range; for example, when the curve fitting degree of the sum of the daily power supply amount and the daily selling electricity amount is large after a certain user is removed, the output abnormal type is that "after comparison and analysis, the curve fitting degree of the daily selling electricity amount is greatly changed after the user (user number 1120013030) is removed, the user condition is mainly checked, and other fields are empty;
s703, adopting a comparison method for a third line loss analysis strategy;
analyzing the change condition of daily electricity sales on the line under the condition of small difference of daily electricity supply quantity; searching the daily power supply quantity, the daily line loss rate, the user numbers, the user names, the user metering point IDs and the user daily electricity sales quantities of the lines in the national grid synchronization line loss system in the line loss time period needing to be analyzed through the line names and the line IDs, and the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily electricity sales quantities of all public changes; in a time period and a month before and after a line loss time period needing to be analyzed, finding two days in which the difference of daily power supply amount is smaller than a set percentage (within 5%), the difference of daily line loss rate exceeds a set threshold (for example, the difference of daily line loss rate exceeds 10%), and comparing and analyzing the change conditions of the number of users, the number of common station areas, user metering points and station area IDs of the two days in which the difference of daily line loss rate exceeds the set threshold; if the change condition exceeds the corresponding allowable range, outputting a corresponding abnormal type; the other fields are null; for example: comparing 1 day in 2 months with 10 days in 2 months, and the daily power supply amount is basically consistent; and adding a new user (user number 1120013030) in 2 months and 10 days, wherein the daily line loss rate is a negative value, and please focus on checking the user condition. ";
s704, adopting a substitution method for the fourth line loss analysis strategy;
the dual-power supply user metering points exchange daily electricity sales to verify the correctness of the primary and standby supply metering point change table relation; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; calculating the daily line loss rate (line loss rate is (power supply amount-electricity sales sum)/power supply amount is 100%) in a time period in which the line loss needs to be analyzed, and calculating whether the daily line loss rate can be recovered to a normal range or not in the time period after a dual-power-supply user tries to replace the daily electricity sales of an original metering point with the daily electricity sales of another metering point one by one, and if so, outputting a corresponding abnormal type; for example, after the 2-day electricity sales of a certain user metering point replaces the 1-day electricity sales of the metering point, the daily line loss rate in the analysis time period can be recovered to be normal, and the output exception type is "after comparison and analysis, the line loss rate is recovered to be normal after the main and standby power metering points of the line user (user number 1120013030) are exchanged, please check the user condition in a key point";
s705, adopting another alternative method for the fifth line loss analysis strategy;
increasing the daily electricity selling quantity of the other line user in the same-pole double-loop or removing the daily electricity selling quantity of the users in the same-pole double-loop section of the line to be analyzed so as to verify the correctness of the subscriber line variation relationship; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; calculating the daily loss rate in a time period in which the line loss of the line needs to be analyzed, and calculating whether the daily loss rate can be recovered to a normal range in the time period or not after deleting the same-pole double-loop users and the station areas on the line needing to be analyzed one by one or deleting the users and the station areas in a combined mode, and if so, outputting a corresponding abnormal type; for example, the line loss section where a certain user is located is a same-pole double-loop, and after the user is deleted, the daily line loss rate in the analysis time period can be recovered to be normal, and the output exception type is "after comparison and analysis, the line loss rate is recovered to be normal after the line user (user numbers 1120013030 and 1120013013) is removed, please focus on checking the user condition"; after trying to increase or combining and increasing users and transformer areas on the same-pole double-loop of the line to be analyzed one by one, calculating whether the daily line loss rate in the period of time can be recovered to a normal range or not, and if so, outputting a corresponding abnormal type; for example, the line loss section where a certain user is located is a same-pole double-loop, after the user is added, the daily line loss rate in the analysis time period can be recovered to be normal, and the output exception type is "after comparison and analysis, the line loss rate is recovered to be normal after the line users (user numbers 1120012552 and 1120089512) are added, please focus on checking the user condition".
S706, adopting an elimination method for a sixth line loss analysis strategy;
searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; calculating the daily line loss rate in a time period in which the line loss needs to be analyzed, and trying to remove a certain distribution area or a user one by one through an elimination method, and judging whether the daily line loss rate can be recovered to a normal range or not, and if so, outputting a corresponding abnormal type; for example, if the line loss rate can be recovered to normal in the period of time after a certain user is removed, the output exception type is "after comparison and analysis, the line loss rate is recovered to normal after the user (user number 1120013030) is removed from the line, please focus on checking the user condition".
See table 4 for an analysis output table output according to the line loss analysis result;
| line name | Line ID | Line loss anomaly point | Type of exception | Abnormal start date | Abnormal expiration date |
TABLE 4
The problem that this application is low, make mistakes easily to current distribution lines line loss analysis efficiency has carried out the pertinence and has improved the work efficiency of line loss staff's analysis and investigation by a wide margin.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (2)
1. A distribution line loss analysis method is characterized by comprising the following steps:
step S1, reading the line to be analyzed and the time slot of the line loss to be analyzed by reading in the input data table;
step S2, finding out the related information of the dual-power users and the transformer area and the same-pole dual-loop information in the line in the power utilization acquisition system and the PMS through the line name and the line ID;
step S3, searching the daily line loss rate, the daily power supply amount and the power supply metering point multiplying power of the line in the national grid synchronization line loss system in the time period of line loss to be analyzed through the line name and the line ID; continuously searching the daily power supply and the power supply metering point multiplying power of the line in the electric energy system in the time period of line loss needing to be analyzed through the line name and the line ID; taking related data in the electric energy system as source end data, comparing daily power supply quantity and power supply metering point multiplying power of the line in the national grid contemporaneous line loss system and the electric energy system, if the data are inconsistent, an output line loss abnormal point is power supply quantity, an abnormal type is power supply quantity not matched with the source end data, and an abnormal date is a date for comparing the daily power supply quantity in the two systems to be inconsistent;
step S4, if comparing the daily power supply amount and the power supply metering point multiplying power in the national network synchronization line loss system and the electric energy system, the data are consistent, and searching the information that the line operation mode changes in the dispatching operation ticket system by taking the line name as a key word and the line loss time period needing to be analyzed, so as to bring the time for supplying; if the line is required to be analyzed and supplied by other lines in the supply time period, and the line loss rate is a negative value, the abnormal point of the output line loss is 'line operation mode change', the abnormal type is 'line is supplied by line', and the abnormal time period is the supply time period; if the circuit needs to be analyzed to be supplied to other circuits in the supply time period, and the line loss rate is a positive value, the abnormal point of the output line loss is 'circuit operation mode change', the abnormal type is 'circuit supply with line', and the abnormal time period is the supply time period;
step S5, if the relevant information that the line running mode changes can not be searched in the dispatching operation ticket system, comparing the public and private variable information of the PMS system with the public and private variable relevant data in the national network contemporaneous line loss system and the PMS system by taking the public and private variable information of the PMS system as source end data;
step S6, if the relevant data of the public and private variables in the matching state network synchronization line loss system and the PMS system are consistent, comparing whether the public and private variable electricity selling quantity information in the state network synchronization line loss system is abnormal or not by taking the public and private variable electricity selling quantity information of the electricity acquisition system as source end data;
step S7, if the public and private variable electricity selling quantity data in the matching state network synchronization system and the electricity utilization acquisition system are consistent, adopting one or more line loss analysis strategies to carry out line loss analysis;
step S5 specifically includes: searching user numbers and user names of all high-voltage users under the line in the national grid synchronization line loss system in the line loss time period to be analyzed, and station area names and station area IDs of all public transformers through the line name and the line ID; one high-voltage user corresponds to one or more special variables; continuously searching user numbers and user names of all high-voltage users under the line in the PMS in the time period of line loss needing to be analyzed, and station area names and station area IDs of all public transformers in the line loss time period through the line name and the line ID; comparing relevant data of public and private variables in a national network contemporaneous line loss system and a PMS system by taking a grid structure in the PMS system as source end data, wherein if the data are inconsistent, an output line loss abnormal point is a high-voltage user number, a user name, a station area name and a station area ID of the public and private variables which are inconsistent, the abnormal type is 'the grid structure is not matched with the PMS system', and the abnormal date is the current date;
step S6 specifically includes: searching user numbers, user names, user metering point IDs and user daily electricity sales quantities of all high-voltage users under the line in the national network synchronization line loss system in the line loss time period needing to be analyzed, and station area names, station area IDs, station area general table metering point IDs and station area general table daily electricity sales quantities of all public transformers through the line names and the line IDs; searching the daily electricity sales amount of the user or the daily electricity sales amount of the table area general table within the time period of line loss analysis required by the user through the user number, the user name, the user metering point ID or the common table area name, the table area ID and the table area general table metering point ID in the electricity acquisition system; comparing the electricity consumption acquisition system as source end data with electricity consumption in a national grid synchronous line loss system and the electricity consumption acquisition system, if the data are inconsistent, comparing the abnormal points of the output line loss with inconsistent high-voltage user numbers, user names, public transformer station area names and station area IDs, wherein the abnormal type is that the electricity consumption is not matched with the data in the electricity consumption acquisition system, and the abnormal date is the date of comparing the electricity consumption in the two systems;
the line loss analysis strategy comprises the following steps:
the first line loss analysis strategy adopts a time shifting method; analyzing the public and special change and the electricity selling quantity difference on the line of the positive and negative reversal time points of the line loss rate; searching the daily line loss rate of the line, the user numbers of all high-voltage users, the user names, the user metering point IDs and the user daily electricity sales quantities of all public transformer distribution area names, the distribution area IDs, the distribution area general table metering point IDs and the distribution area general table daily electricity sales quantities of all public transformer distribution areas in a national network synchronization line loss system in a line loss time period to be analyzed through the line names and the line IDs; tracing the time point when the daily loss rate is changed from qualified to unqualified from time, and comparing and analyzing the number of users, the number of public transformer areas, the user metering points, the ID of the transformer areas, the daily electricity selling condition of the users and the daily electricity selling condition of a total table of the transformer areas on two days before and after the change of the daily loss rate; if the change exceeds the allowable range, outputting a corresponding abnormal type;
the second line loss analysis strategy adopts a stacking method; carrying out curve fitting on the daily electricity selling quantity and the daily electricity supply quantity of each public and special transformer on the line; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; performing curve fitting of the sum of the daily power supply quantity and the daily electricity sales quantity of the line in a time period in which the line loss of the line needs to be analyzed, trying to remove the influence of a certain distribution area or a user on the curve fitting degree of the sum of the daily power supply quantity and the daily electricity sales quantity one by one through an elimination method, and outputting a corresponding abnormal type if the change of the curve fitting degree exceeds a set allowable range;
a third line loss analysis strategy adopts a comparison method; analyzing the change condition of daily electricity sales on the line under the condition of small difference of daily electricity supply quantity; searching the daily power supply quantity, the daily line loss rate, the user numbers, the user names, the user metering point IDs and the user daily electricity sales quantities of the lines in the national grid synchronization line loss system in the line loss time period needing to be analyzed through the line names and the line IDs, and the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily electricity sales quantities of all public changes; in the time period of line loss needing to be analyzed and within one month before and after the time period, finding two days in which the difference of daily power supply quantity is smaller than a set percentage and the difference of daily line loss rate exceeds a set threshold, and comparing and analyzing the change conditions of the number of users, the number of common station areas, user metering points and station area IDs of the two days in which the difference of daily line loss rate exceeds the set threshold; if the change condition exceeds the corresponding allowable range, outputting a corresponding abnormal type;
a fourth line loss analysis strategy adopts an alternative method; the dual-power supply user metering points exchange daily electricity sales to verify the correctness of the primary and standby supply metering point change table relation; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; calculating the daily loss rate in a time period in which the line loss needs to be analyzed, and calculating whether the daily loss rate in the time period can be recovered to a normal range or not by trying to replace the daily electricity sales amount of the original metering point with the daily electricity sales amount of another metering point one by one for a dual-power-supply user, and if so, outputting a corresponding abnormal type;
the fifth line loss analysis strategy adopts another alternative method; increasing the daily electricity selling quantity of the other line user in the same-pole double-loop or removing the daily electricity selling quantity of the users in the same-pole double-loop section of the line to be analyzed so as to verify the correctness of the subscriber line variation relationship; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; calculating the daily loss rate in a time period in which the line loss of the line needs to be analyzed, and calculating whether the daily loss rate can be recovered to a normal range in the time period or not after deleting the same-pole double-loop users and the station areas on the line needing to be analyzed one by one or deleting the users and the station areas in a combined mode, and if so, outputting a corresponding abnormal type; after trying to increase or combining and increasing users and transformer areas on the same-pole double-loop of the line to be analyzed one by one, calculating whether the daily line loss rate in the period of time can be recovered to a normal range or not, and if so, outputting a corresponding abnormal type;
the sixth line loss analysis strategy adopts an elimination method; searching the daily power supply quantity, the user numbers, the user names, the user metering point IDs and the user daily power selling quantities of the lines, the station area names, the station area IDs, the station area general table metering point IDs and the station area general table daily power selling quantities of all public variables in a national network synchronization line loss system in a line loss time period needing to be analyzed through the line names and the line IDs; and calculating the daily line loss rate in the time period in which the line loss needs to be analyzed, and trying to remove a certain distribution area or a user one by one through an elimination method, and judging whether the daily line loss rate can be recovered to a normal range or not, and if so, outputting a corresponding abnormal type.
2. A distribution line loss analysis device, comprising:
the input module is used for reading an input data table;
the data interface module is used for carrying out data interaction with the electricity utilization acquisition system, the electric energy system, the PMS system, the dispatching operation ticket system and the state network synchronous line loss system;
a processing module for running a computer program to implement the steps of the distribution line loss analysis method of claim 1;
and the output module is used for outputting an analysis output table according to the line loss analysis result.
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