Abnormal data management method for low-voltage transformer area

Abstract

The invention relates to the technical field of power supply line loss abnormity treatment, and discloses a low-voltage transformer area abnormal data treatment method, which comprises the following steps of: 1, acquiring all grid structure data of a low-voltage transformer area and uploading the grid structure data to a main station end, and establishing a low-voltage transformer area abnormal line loss data analysis treatment system by the main station end in combination with the grid structure data of the low-voltage transformer area, and step 2, the constructed low-voltage transformer area abnormal line loss data analysis and treatment system comprises a master station system end, a low-voltage transformer area user file data anomaly analysis end, a low-voltage transformer area acquisition equipment fault anomaly analysis end and a low-voltage transformer area power supply fault detection and analysis end. According to the abnormal data governance method for the low-voltage transformer area, user data abnormity troubleshooting detection is carried out on the line loss problem, accurate troubleshooting and overhauling are conveniently carried out on power supply line equipment faults, governance on various condition problems with line loss data is effectively improved, and the line loss governance effect is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply line loss abnormality management, and in particular to a method for managing abnormal data in a low-voltage station area. Background Art

[0002] In the power system, the substation usually refers to the power supply range or area of ​​a transformer. The active power loss and electric energy loss generated in the transmission and distribution process of the power grid are collectively referred to as line loss. The low-voltage substation is the main link where line loss occurs.

[0003] However, under the current line loss refinement platform, the statistical value of low-voltage area line loss can only be obtained by comparing the power supply and sales. Due to meter or communication failures and other reasons, the statistical value is sometimes not very accurate, and it is impossible to grasp at which link the line loss mainly occurs, resulting in a lack of effective means for low-voltage area line loss management. To this end, we provide a low-voltage area abnormal data management method to solve this problem. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for managing abnormal data in a low-voltage area to solve this problem.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for managing abnormal data in a low-voltage area, comprising the following steps: The first step is to obtain all grid structure data of the low-voltage area and upload it to the master station. The master station combines the grid structure data of the low-voltage area to establish a low-voltage area abnormal line loss data analysis and management system, and build a user power purchase database for the low-voltage area in two cycles. The household power purchase database for the low-voltage area in the two cycles records the power purchase data of the historical cycle and the current cycle respectively. The second step is to construct a low-voltage substation abnormal line loss data analysis and management system, which includes a main station system end, a low-voltage substation user file data abnormal analysis end, a low-voltage substation acquisition equipment failure abnormal analysis end, and a low-voltage substation power supply failure detection and analysis end. The main station system end is connected to the low-voltage substation user file data abnormal analysis end, the low-voltage substation acquisition equipment failure abnormal analysis end, and the low-voltage substation power supply failure detection and analysis end through data signals; The third step is to analyze and sort out the abnormal data of the summarized user file data information according to the data abnormality analysis module in the low-voltage area user file data abnormality analysis terminal, and manually enter the new data file into the main station system terminal for adjustment by the staff; Step 4: The staff will perform on-site maintenance on the low-voltage area acquisition equipment failure, and then record the information through the acquisition equipment failure sorting module in the low-voltage area acquisition equipment failure anomaly analysis terminal; Step 5: By designing three node ends for the power supply line, namely the power supply start end, the power supply shunt end and the power supply end end, the voltage and current data of the three node ends are monitored in real time according to the low-voltage power supply fault detection and analysis end, and the power supply facilities are analyzed according to the real-time transmitted data information to determine whether there is any damage or fault; Step 6: Install voltage detectors and current detectors in the lines at the power supply start, power supply shunt, and power supply end through the low-voltage power supply fault detection and analysis terminal to monitor the voltage and current of the power supply line facilities in real time, so that subsequent staff can quickly follow up and repair the fault; Step 7. According to the user power purchase database of the low-voltage substation in the historical period, the line loss rate calculation formula, that is, the substation line loss rate = substation line loss power / substation power supply × 100% = (substation input power − substation power sales − substation output power) / substation power supply × 100%, is used to calculate the line loss compliance during the user's actual power consumption. The normal line loss rate is generally 10% for 10kV and 12% for 380 / 220V. If it is calculated that the substation line loss rate in the historical period does not meet the standard, the abnormal data management of the low-voltage substation in the current period is carried out, that is, the abnormal line loss phenomenon of the low-voltage substation power supply is managed through the low-voltage substation user archive data abnormal analysis end, the low-voltage substation collection equipment fault abnormal analysis end, and the low-voltage substation power supply fault detection analysis end. After the management is completed, the line loss rate calculation formula is used to check whether the line loss rate ultimately generated by the actual power purchase of users in the current period meets the standard.

[0006] Furthermore, the data anomaly analysis module of the low-voltage substation user file data anomaly analysis terminal includes anomaly investigation and analysis of the household transformer relationship file and the actual situation of the power supply user end and anomaly investigation and analysis of the master station total table file and the actual situation of the power supply user end.

[0007] Furthermore, the collection equipment fault sorting module of the low-voltage substation collection equipment fault anomaly analysis terminal includes the collection and analysis of user-side electricity consumption data collection faults and the sorting and collection of user metering line faults.

[0008] Furthermore, the user-side electricity consumption data collection fault collection and analysis includes fault analysis and troubleshooting of collectors, concentrators and user transformers.

[0009] Furthermore, the user metering line fault collection and analysis includes fault detection and analysis of voltage loss and current interruption of line connections.

[0010] Furthermore, the voltage detectors and current detectors in the three node ends of the low-voltage substation power supply fault detection and analysis end are connected with the voltage and current sensors for data signal control, and then the voltage and current information is fed back to the main station system end. The power supply power generated by the set power supply power is compared with the power supply power generated by the real-time monitored voltage and current data to see whether it meets the standard, so as to judge whether there is any damage or fault in the three node ends of the power supply facility.

[0011] Compared with the prior art, the present invention provides a method for managing abnormal data in a low-voltage area, which has the following beneficial effects: 1. The method for managing abnormal data in low-voltage areas records the electricity consumption data of all users in low-voltage areas through the electricity consumption database of low-voltage areas in the constructed historical period, and compares the electricity consumption of users in the same period every year. If the data of electricity consumption is greatly different, it is shown as abnormal data and recorded. The staff will check whether the household change relationship files and the general table files are consistent with the on-site situation. If the file situation is inconsistent with the on-site situation, it means that the user file data is abnormal, and the files are readjusted and summarized to reduce technical line losses. At the same time, after checking the abnormality of user file data, if there is no problem, the abnormal failure of the low-voltage area collection equipment is checked. After the collector, concentrator and user mutual inductor are checked, if a failure occurs, the equipment is repaired or replaced. At the same time, the user metering line fault is checked and detected. If there is a loss of pressure and interruption of current in the line connection, it is repaired in time to reduce line losses, effectively and quickly locate and check the technical line loss problem, and effectively improve the management effect; The method for managing abnormal data in low-voltage substations calculates the power supply power based on the voltage and current data through the voltage detectors and current detectors installed at the three node ends of the power supply line facilities, and compares and analyzes the deviation between the theoretical power and the normal line loss and the actual power supply power. When the actual power supply power of a certain node end detected exceeds or is lower than the normal value range, the line position is quickly and real-timely queried through the archived files of the power supply line, so as to quickly and accurately grasp the specific location of abnormal line loss in the power supply line link of the low-voltage substation, and dispatch staff for timely inspection and maintenance, so as to facilitate the solution of abnormal line loss and effectively improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the process of the present invention; Figure 2 It is a schematic diagram of the framework of the abnormal line loss data analysis and management system in the low voltage substation area of ​​the present invention; DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] See also Figure 1-2 A method for managing abnormal data in a low-voltage area includes the following steps: the first step is to obtain all grid structure data of the low-voltage area and upload them to the master station, the master station combines the grid structure data of the low-voltage area to establish a low-voltage area abnormal line loss data analysis and management system, and constructs a user power purchase database of the low-voltage area in two cycles, and the user power purchase database of the low-voltage area in the two cycles respectively records the power purchase data of the historical cycle and the current cycle; The second step is to construct a low-voltage substation abnormal line loss data analysis and management system, which includes a main station system end, a low-voltage substation user file data abnormal analysis end, a low-voltage substation acquisition equipment failure abnormal analysis end, and a low-voltage substation power supply failure detection and analysis end. The main station system end is connected to the low-voltage substation user file data abnormal analysis end, the low-voltage substation acquisition equipment failure abnormal analysis end, and the low-voltage substation power supply failure detection and analysis end through data signals; The third step is to analyze and sort out the summarized user file data information according to the data anomaly analysis module in the low-voltage area user file data anomaly analysis terminal, and manually enter the new data file into the main station system for adjustment by the staff. The data anomaly analysis module of the low-voltage area user file data anomaly analysis terminal includes anomaly investigation and analysis of the household change relationship file and the actual situation of the power supply user end and anomaly investigation and analysis of the master station end total table file and the actual situation of the power supply user end; Based on all the grid structure data of the low-voltage substation, a database is constructed for the electricity consumption of all users in the low-voltage substation in recent years for multiple historical periods (one period is one quarter). The data anomaly analysis module compares the electricity consumption in the same period every year. If the electricity consumption data differs greatly, it will be recorded and the staff will check whether the household change relationship files and the general table files are consistent with the on-site situation. If the file situation is inconsistent with the on-site situation, it means that the user file data is abnormal, and the files will be readjusted and summarized to reduce technical line losses.

[0015] The fourth step is to perform on-site maintenance of the low-voltage area acquisition equipment failure, and then record the information through the acquisition equipment failure sorting module in the low-voltage area acquisition equipment failure abnormality analysis terminal. The acquisition equipment failure sorting module in the low-voltage area acquisition equipment failure abnormality analysis terminal includes the collection and analysis of user-side power consumption data collection failures and user metering line failures. The user-side power consumption data collection failure analysis includes fault analysis and troubleshooting of the collector, concentrator and user transformer, and the user metering line failure analysis includes fault detection and analysis of line wiring loss of pressure and interruption of current; After checking the abnormalities of the user file data in the third step above, if there is no problem, check the abnormalities of the low-voltage substation collection equipment on site. After checking the collector, concentrator and user transformer, if a fault occurs, repair or replace the equipment. At the same time, check and detect the user's metering line fault. If there is a loss of pressure and current interruption in the line connection, repair it in time to reduce line loss. At the same time, the staff will upload the fault repair records of the collection equipment and metering line to the collection equipment fault sorting module, and then the data will be sorted and fed back to the main station system through the collection equipment fault sorting module.

[0016] Step 5: By designing three node ends for the power supply line, namely the power supply start end, the power supply shunt end and the power supply end end, the voltage and current data of the three node ends are monitored in real time according to the low-voltage power supply fault detection and analysis end, and the power supply facilities are analyzed according to the real-time transmitted data information to determine whether there is any damage or fault; Step 6: Install voltage detectors and current detectors in the lines at the power supply start end, power supply shunt end and power supply end through the low-voltage power supply fault detection and analysis end, and monitor the voltage and current of the power supply line facilities in real time, so that subsequent staff can quickly follow up and repair the fault. The voltage detectors and current detectors at the three node ends of the low-voltage power supply fault detection and analysis end are connected with the voltage and current sensors for data signal control, and then the voltage and current information is fed back to the main station system end. The power supply power generated by the set power supply power and the real-time monitored voltage and current data is compared to see whether it meets the standard, so as to judge whether there is damage fault at the three node ends of the power supply facility; Voltage detectors and current detectors are installed at three node ends in the power supply line facilities, and there are multiple power supply shunt lines from the power supply shunt end to the power supply end. The voltage and current of each node end line are detected and transmitted to the voltage and current sensors, and then the voltage and current information is fed back to the main station system end. The main station system end calculates the power supply power according to the voltage and current data, and compares and analyzes the deviation between the theoretical power and the normal line loss and the actual power supply power. When the actual power supply power belongs to the normal value range, it means that there is no fault in the low-voltage power supply area. When the actual power supply power of a certain node end detected exceeds or is lower than the normal value range, the line position is quickly and real-timely queried through the archived files of the power supply line, so as to quickly and accurately grasp the specific location of abnormal line loss in the low-voltage power supply line link, and dispatch staff to carry out timely maintenance, so as to solve the abnormal line loss conveniently and effectively improve the use effect.

[0017] Step 7. According to the user power purchase database of the low-voltage substation in the historical period, the line loss rate calculation formula, that is, the substation line loss rate = substation line loss power / substation power supply × 100% = (substation input power − substation power sales − substation output power) / substation power supply × 100%, is used to calculate the line loss compliance during the user's actual power consumption. The normal line loss rate is generally 10% for 10kV and 12% for 380 / 220V. If it is calculated that the substation line loss rate in the historical period does not meet the standard, the abnormal data management of the low-voltage substation in the current period is carried out, that is, the abnormal line loss phenomenon of the low-voltage substation power supply is managed through the low-voltage substation user archive data abnormal analysis end, the low-voltage substation collection equipment fault abnormal analysis end, and the low-voltage substation power supply fault detection analysis end. After the management is completed, the line loss rate calculation formula is used to check whether the line loss rate ultimately generated by the actual power purchase of users in the current period meets the standard.

[0018] In summary: the low-voltage substation abnormal data management method of the present invention is mainly based on whether the line loss data generated by the user's power purchase volume recorded in the user power purchase database of the low-voltage substation in the historical period meets the standard. The normal line loss rate is generally 10% for 10kV and 12% for 380 / 220V. If it does not meet the standard, the low-voltage substation abnormal data management work of the current period is carried out, that is, the abnormal line loss phenomenon of the low-voltage substation power supply is managed through the low-voltage substation user archive data abnormality analysis end, the low-voltage substation acquisition equipment fault abnormality analysis end, the acquisition equipment, and the low-voltage substation power supply fault detection and analysis end, that is, according to the constructed low-voltage station user power purchase database of the historical period, the data abnormality analysis module is used to analyze the user's power purchase volume in the same period every year. The electricity consumption data is compared. If the electricity consumption data differs greatly, it is shown as abnormal data and recorded. The staff will check whether the household change relationship files and the general table files are consistent with the on-site situation. If the file situation is inconsistent with the on-site situation, it means that the user file data is abnormal, and the files will be readjusted and summarized to reduce technical line losses. At the same time, after checking the abnormal user file data, if there is no problem, the abnormal failure of the low-voltage station area collection equipment will be checked. After the collector, concentrator and user mutual inductor are checked, if a failure occurs, the equipment will be repaired or replaced. At the same time, the user's metering line fault is checked and detected. If there is a loss of pressure and current failure in the line connection, Timely maintenance is carried out to reduce line losses, and at the same time, the staff uploads the fault maintenance records of the acquisition equipment and the metering lines to the acquisition equipment fault sorting module, and then the data is sorted out through the acquisition equipment fault sorting module and fed back to the main station system end. The voltage detector and current detector are installed at the three node ends of the power supply line facilities, and there are multiple power supply shunt lines from the power supply shunt end to the power supply end. The voltage and current of each node end line are detected and transmitted to the voltage and current sensors, and then the voltage and current information is fed back to the main station system end. The main station system end calculates the power supply power according to the voltage and current data, and calculates the deviation between the theoretical power and the normal line loss and the actual power supply power. Data comparison and analysis: when the actual power supply power is within the normal range, it means that the low-voltage power supply is currently fault-free. When the actual power supply power of a certain node is detected to be beyond or below the normal range, the line location is quickly queried in real time through the archived files of the power supply line, so as to quickly and accurately grasp the specific location of abnormal line loss in the low-voltage power supply line link, and dispatch staff to carry out timely maintenance, so as to solve the abnormal line loss and effectively improve the use effect. In addition, a database is constructed for the power purchase data within a cycle of the current stage. By calculating and recording the new low-voltage area line loss within a cycle, if the line loss rate calculation meets the standard, the low-voltage area abnormal data management is completed. If the line loss rate calculation does not meet the standard,If the low-voltage area user profile data anomaly analysis terminal, the low-voltage area acquisition equipment fault anomaly analysis terminal, and the low-voltage area power supply fault detection and analysis terminal have not found any faults, it means that this type of line loss is not the problem, and other types of line losses will be subsequently managed.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for managing abnormal data in a low voltage area, characterized by: The following steps are involved: The first step is to obtain all grid structure data of the low-voltage area and upload it to the master station. The master station combines the grid structure data of the low-voltage area to establish a low-voltage area abnormal line loss data analysis and management system, and build a user power purchase database for the low-voltage area in two cycles. The household power purchase database for the low-voltage area in the two cycles records the power purchase data of the historical cycle and the current cycle respectively. The second step is to construct a low-voltage substation abnormal line loss data analysis and management system, which includes a main station system end, a low-voltage substation user file data abnormal analysis end, a low-voltage substation acquisition equipment failure abnormal analysis end, and a low-voltage substation power supply failure detection and analysis end. The main station system end is connected to the low-voltage substation user file data abnormal analysis end, the low-voltage substation acquisition equipment failure abnormal analysis end, and the low-voltage substation power supply failure detection and analysis end through data signals; The third step is to analyze and sort out the abnormal data of the summarized user file data information according to the data abnormality analysis module in the low-voltage area user file data abnormality analysis terminal, and manually enter the new data file into the main station system terminal for adjustment by the staff; Step 4: The staff will perform on-site maintenance on the low-voltage area acquisition equipment failure, and then record the information through the acquisition equipment failure sorting module in the low-voltage area acquisition equipment failure anomaly analysis terminal; Step 5: By designing three node ends for the power supply line, namely the power supply start end, the power supply shunt end and the power supply end end, the voltage and current data of the three node ends are monitored in real time according to the low-voltage power supply fault detection and analysis end, and the power supply facilities are analyzed according to the real-time transmitted data information to determine whether there is any damage or fault; Step 6: Install voltage detectors and current detectors in the lines at the power supply start, power supply shunt, and power supply end through the low-voltage power supply fault detection and analysis terminal to monitor the voltage and current of the power supply line facilities in real time, so that subsequent staff can quickly follow up and repair the fault; Step 7. According to the user power purchase database of the low-voltage substation in the historical period, the line loss rate calculation formula, that is, the substation line loss rate = substation line loss power / substation power supply × 100% = (substation input power − substation power sales − substation output power) / substation power supply × 100%, is used to calculate the line loss compliance during the user's actual power consumption. The normal line loss rate is generally 10% for 10kV and 12% for 380 / 220V. If it is calculated that the substation line loss rate in the historical period does not meet the standard, the abnormal data management of the low-voltage substation in the current period is carried out, that is, the abnormal line loss phenomenon of the low-voltage substation power supply is managed through the low-voltage substation user archive data abnormal analysis end, the low-voltage substation collection equipment fault abnormal analysis end, and the low-voltage substation power supply fault detection analysis end. After the management is completed, the line loss rate calculation formula is used to check whether the line loss rate ultimately generated by the actual power purchase of users in the current period meets the standard.

2. The method for managing abnormal data in low-voltage areas according to claim 1, characterized in that: The data anomaly analysis module of the low-voltage substation user file data anomaly analysis terminal includes anomaly investigation and analysis of the household transformer relationship file and the actual situation of the power supply user end, and anomaly investigation and analysis of the master station total table file and the actual situation of the power supply user end.

3. The method for managing abnormal data in low-voltage areas according to claim 1, characterized in that: The collection equipment fault sorting module at the low-voltage substation area collection equipment fault abnormality analysis end includes the collection and analysis of user-side electricity consumption data collection faults and the sorting and collection of user metering line faults.

4. The method for managing abnormal data in low-voltage areas according to claim 3 is characterized in that: The user-side electricity consumption data collection fault collection and analysis includes fault analysis and troubleshooting of collectors, concentrators and user transformers.

5. The method for managing abnormal data in low-voltage areas according to claim 3 is characterized in that: The user metering line fault collection and analysis includes fault detection and analysis of line wiring pressure loss and current interruption.

6. The method for managing abnormal data in low-voltage areas according to claim 1, characterized in that: The voltage detectors and current detectors at the three node ends of the low-voltage power supply fault detection and analysis end are connected to the voltage and current sensors for data signal control, and then the voltage and current information is fed back to the main station system end. The power supply power generated by the set power supply power is compared with the real-time monitored voltage and current data to see whether it meets the standard, so as to judge whether there is any damage or fault at the three node ends of the power supply facility.

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