CN113960411B - Power transmission line fault tripping comprehensive research and judgment method based on multi-source data fusion - Google Patents

Abstract

The invention discloses a comprehensive power transmission line fault tripping and judging method based on multi-source data fusion, which comprises the following steps: step one: remote signaling information fusion research and judgment of power grid secondary equipment; step two: correcting and judging telemetering information of primary equipment of a power grid; step three: correcting and studying and judging the planned outage information of the power grid; step four: correcting, studying and judging power grid fault wave recording information; step five: correcting and studying and judging the distributed fault positioning information of the power grid; step six: and forming final power transmission line fault tripping information. The accuracy of the fault tripping and studying and judging of the power transmission line is improved. The method provides a solution for accurately, comprehensively and timely grasping the tripping information of the power transmission line and improving the operation and maintenance level of the power transmission line, and has good practical value. Through integrating a plurality of real-time power outage service systems, a plurality of service system equipment accounts are communicated, and real-time power outage is subjected to fusion research and judgment from a plurality of dimensions, so that accurate power outage data of the power transmission line in a quasi-real-time fault is constructed.

Description

Comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion

Technical field

The present invention relates to the technical field of power grid operation safety analysis, and in particular to a comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion.

Background technique

Transmission lines are greatly affected by the external environment, and tripping events often occur. How to accurately, comprehensively and timely grasp transmission line tripping information is of great practical significance for analyzing the causes of transmission line failures and improving the level of transmission line operation and maintenance.

At present, timely analysis and judgment of line tripping requires the support of primary and secondary equipment operation information in the dispatch automation system. However, primary and secondary equipment operation signals are often mistransmitted or missed, requiring manual verification, and accurate trip information cannot be analyzed and judged in a timely manner. Currently, due to the different business needs of various departments, the power system has built different equipment outage systems, which mainly include fault recording, distributed fault location, planned outage management, etc.

With the advancement of big data, cloud platforms, and digital technologies in power companies, data governance and sharing can be effectively carried out within the power system. Through mutual verification of multiple business systems, the accuracy of transmission line fault analysis and judgment can be further improved.

Therefore, a comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion is proposed. It integrates multiple business systems involving real-time power outages, connects multiple business system equipment accounts, conducts integrated research and judgment on real-time power outages from multiple dimensions, and constructs a Accurate, near-real-time outage data on transmission lines is imperative.

Contents of the invention

The purpose of the present invention is to solve the problem of untimely and accurate research and judgment of transmission line fault tripping, and to provide a comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion to solve the above problems.

The present invention is realized through the following technical solutions:

A comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion, including the following steps:

Step 1: Research and judgment on remote signaling information fusion of primary and secondary equipment in the power grid:

Obtain the remote signaling data of the primary and secondary equipment of the power grid from the dispatching automation system, group the remote signaling signals of the primary and secondary equipment of the power grid in real time by intervals, and then sort within the group based on the timing of signal occurrence. If there is an opening displacement signal on the line switch in the group, it will be recorded as the line outage, and the type is line power outage. If there is protection action information in the group, it will be further recorded as the line outage type as fault trip. A line outage set L is formed.

Step 2: Calibration and judgment of telemetry information of primary equipment in the power grid:

Obtain the telemetry data of the primary equipment of the power grid from the dispatch automation system. Based on whether the active power and current telemetry data of the transmission line mutates or is directly 0, a secondary judgment is made on the outage situation of the lines in the set. Through the telemetry change trend, it is determined that there is no The outage lines are corrected, and the outage type in the line outage set L is modified to no power outage to eliminate misjudgment results caused by mistransmission of primary and secondary equipment remote signaling signals.

Step 3: Calibration and judgment of planned power grid outage information:

Obtain daily planned maintenance information from the dispatching operation management system, extract line maintenance and outage information from it, and compare it with the line outage set L in step 2 according to the consistency of equipment and outage cycles. If it is completely consistent, then step 2 The outage equipment type of the middle line in the middle line set L is updated to planned maintenance outage.

Step 4: Calibration and judgment of power grid fault recording information;

Obtain the power grid fault recording information in real time from the power grid fault recording system, extract the line fault outage information, and compare it with the line outage set L in step 2 according to the consistency of the equipment and outage period. If it is completely consistent, update it. The outage type is fault and power outage; if the line outage set L does not exist, compare the line outage information in the fault recording with the dispatched primary equipment telemetry operation information. If they are consistent, the outage information is updated into the line. In the outage set L, it is recorded as a fault trip.

Step 5: Calibration and judgment of power grid distributed fault location information:

Obtain distributed fault location information from the power grid distributed fault location system, extract line fault outage information, use the same correction strategy as in step 4 for proofreading, and update the line outage set L in step 2.

Step 6: Form the final transmission line fault trip information:

Extract the lines whose outage type is fault tripping from the line outage set in step 5, and record them as tripping information on the final transmission line drawing.

Further, in the third step, in the line maintenance and outage information extracted therefrom, the line maintenance and outage information includes the name of the outage line, the outage start time, and the outage end time.

Compared with existing technology, the beneficial effects of the present invention are:

The comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion proposed by this invention improves the accuracy of transmission line fault tripping research and judgment compared with the existing technology. It provides solutions for accurately, comprehensively and timely grasping transmission line tripping information and improving transmission line operation and maintenance levels, which has great practical value. By integrating multiple real-time power outage business systems, connecting multiple business system equipment accounts, and conducting integrated research and judgment on real-time power outages from multiple dimensions, we can construct more accurate quasi-real-time fault and power outage data for transmission lines.

Description of the drawings

Figure 1 is a flow chart of the comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion according to the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

Please refer to Figure 1. Figure 1 is a flow chart of the comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion according to the present invention.

A comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion, including the following steps:

Step 1: Research and judgment on remote signaling information fusion of primary and secondary equipment in the power grid:

Obtain the remote signaling data of the primary and secondary equipment of the power grid from the dispatching automation system, group the remote signaling signals of the primary and secondary equipment of the power grid in real time by intervals, and then sort within the group based on the timing of signal occurrence. If there is an opening displacement signal on the line switch in the group, it will be recorded as the line outage, and the type is line power outage. If there is protection action information in the group, it will be further recorded as the line outage type as fault trip. A line outage set L is formed.

Step 2: Calibration and judgment of telemetry information of primary equipment in the power grid:

Obtain the telemetry data of the primary equipment of the power grid from the dispatch automation system. Based on whether the active power and current telemetry data of the transmission line mutates or is directly 0, a secondary judgment is made on the outage situation of the lines in the set. Through the telemetry change trend, it is determined that there is no The outage lines are corrected, and the outage type in the line outage set L is modified to no power outage to eliminate misjudgment results caused by mistransmission of primary and secondary equipment remote signaling signals.

Step 3: Calibration and judgment of planned power grid outage information:

Obtain daily planned maintenance information from the dispatch operation management system, and extract line maintenance and outage information, including the name of the outage line, the outage start time, and the outage end time. Based on the consistency of equipment and outage cycles, compare it with the line outage set L in step 2. If it is completely consistent, update the line outage equipment type in line set L in step 2 to planned maintenance outage.

Step 4: Calibration and judgment of power grid fault recording information:

Obtain the power grid fault recording information in real time from the power grid fault recording system, extract the line fault outage information, and compare it with the line outage set L in step 2 according to the consistency of the equipment and outage period. If it is completely consistent, update it. The outage type is fault and power outage; if the line outage set L does not exist, compare the line outage information in the fault recording with the dispatched primary equipment telemetry operation information. If they are consistent, the outage information is updated into the line. In the outage set L, it is recorded as a fault trip.

Step 5: Calibration and judgment of power grid distributed fault location information:

Obtain distributed fault location information from the power grid distributed fault location system, extract line fault outage information, use the same correction strategy as in step 4 for proofreading, and update the line outage set L in step 2.

Step 6: Form the final transmission line fault trip information:

Extract the lines whose outage type is fault tripping from the line outage set in step 5, and record them as tripping information on the final transmission line drawing.

Compared with existing technology, the beneficial effects of the present invention are:

The comprehensive research and judgment method for transmission line fault tripping based on multi-source data fusion proposed by this invention improves the accuracy of transmission line fault tripping research and judgment compared with the existing technology. It provides solutions for accurately, comprehensively and timely grasping transmission line tripping information and improving transmission line operation and maintenance levels, which has great practical value. By integrating multiple real-time power outage business systems, connecting multiple business system equipment accounts, and conducting integrated research and judgment on real-time power outages from multiple dimensions, we can construct more accurate quasi-real-time fault and power outage data for transmission lines.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Under the premise, there will be various changes and improvements in the present invention, and these changes and improvements all fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims (2)

1. The comprehensive power transmission line fault tripping studying and judging method based on multi-source data fusion is characterized by comprising the following steps of:

step one: remote signaling information fusion research and judgment of power grid secondary equipment;

acquiring primary and secondary equipment remote signaling data of a power grid from a dispatching automation system, grouping primary and secondary equipment remote signaling signals of the power grid in real time according to intervals by taking 5 minutes as a period, sequencing in a group by taking a signal generation time sequence, recording that a line switch generates a brake-separating deflection signal in the group, stopping the line, recording that the line is in a power failure type, recording that the line is in a fault trip according to protection action information of the group memory, and recording that the line is in a fault trip type to form a line stopping set L;

step two: correcting and judging telemetering information of primary equipment of a power grid;

acquiring telemetry data of primary equipment of a power grid from a dispatching automation system, secondarily judging the outage condition of the lines in a formed set according to whether the active and current telemetry data of the power transmission lines are suddenly changed or are directly 0, correcting the lines without outage according to telemetry change trend, correcting the outage type in the line outage set L to be uninterrupted, and eliminating erroneous judgment results caused by mistransmission of telemetry signals of secondary equipment;

step three: correcting and studying and judging the planned outage information of the power grid;

acquiring daily scheduled maintenance information from a scheduling operation management system, extracting line maintenance outage information from the daily scheduled maintenance information, comparing the daily scheduled maintenance information with a line outage set L in the second step according to the consistency of equipment and outage periods, and updating the type of the line outage equipment in the line set L into scheduled maintenance outage if the daily scheduled maintenance information is completely consistent with the line outage set L in the second step;

step four: correcting, studying and judging power grid fault wave recording information;

acquiring power grid fault wave recording information from a power grid fault wave recording system in real time, extracting line fault outage information, comparing the line fault wave recording information with a line outage set L in the second step according to the consistency of equipment and outage periods, and updating the outage type to be fault outage if the line fault wave recording information is completely consistent with the line outage set L in the second step; if the line shutdown set L does not exist, comparing the line shutdown information with the remote measurement operation information of the dispatching primary equipment aiming at fault wave recording, and if the line shutdown information is consistent with the remote measurement operation information, updating the line shutdown information into the line shutdown set L, and recording the line shutdown information as fault tripping;

step five: correcting and studying and judging the distributed fault positioning information of the power grid;

acquiring distributed fault positioning information from a power grid distributed fault positioning system, extracting line fault outage information, performing correction by adopting the same correction strategy as that in the fourth step, and updating a line outage set L in the second step;

step six: forming final power transmission line fault tripping information;

and (3) extracting a circuit with the shutdown type of fault tripping in the circuit shutdown set in the fifth step, and recording the circuit as final power transmission circuit drawing tripping information.

2. The method for comprehensively studying and judging the fault tripping of the power transmission line based on the multi-source data fusion according to claim 1, wherein in the third step, the line overhaul shutdown information is extracted from the information, and the line overhaul shutdown information comprises a shutdown line name, a shutdown start time and a shutdown end time.