CN-121978388-A - Lightning arrester lightning stroke counting system and method for homologous measurement

CN121978388ACN 121978388 ACN121978388 ACN 121978388ACN-121978388-A

Abstract

The application relates to the technical field of lightning stroke counters, in particular to a lightning stroke counting system and a lightning stroke counting method of a lightning arrester for homologous measurement, which comprise a digital counting action is executed to update and generate a driving instruction when a lightning stroke event result is an effective lightning stroke event, a mechanical driving and counting module connected with the digital processing and counting module and used for generating pulse current according to the driving instruction and counting based on the pulse current, the limitation of independent operation of the traditional digital and mechanical counter is broken through, the signal consistency is ensured by homologous measurement, the event accuracy is ensured by double judgment, the action synchronism is realized by cooperative driving, the problem of inconsistent counting caused by different sensor differences and judgment logics is fundamentally solved, the missing counting caused by inertia of the traditional mechanical counter and the error counting caused by interference of a digital system are avoided, and the accuracy and the reliability of lightning stroke counting data are improved.

Inventors

WANG QINGHUA
WANG QIANJUN
WANG JUNFENG
ZHANG DAOQING

Assignees

常州中能电力科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260202

Claims (10)

1. A lightning arrester lightning strike counting system for homologous measurement, comprising: the signal acquisition module is used for acquiring lightning current signals and outputting homologous voltage signals; The digital processing and counting module is connected with the signal acquisition module and is used for conditioning the homologous voltage signals to obtain standard voltage signals, sampling the standard voltage signals, judging based on preset double conditions to obtain lightning event results, and executing digital counting action to update and generate driving instructions when the lightning event results are effective lightning events; And the mechanical driving and counting module is connected with the digital processing and counting module and is used for generating pulse current according to the driving instruction and counting based on the pulse current.
2. The homology-measured lightning arrester lightning strike counting system of claim 1, wherein the signal acquisition module comprises: the current transformer unit is connected in series with the lightning arrester and is used for acquiring lightning current signals of the lightning arrester in real time when lightning strike occurs; and the signal conversion unit is used for converting the lightning current signal into a voltage signal as a homologous measurement signal.
3. The homology-measured lightning arrester lightning strike counting system of claim 1, wherein the digital processing and counting module comprises: the signal conditioning unit is used for filtering, limiting and amplifying the homologous voltage signals to obtain standard voltage signals; the validity judging unit is used for carrying out AD sampling on the standard voltage signal and judging on the basis of preset double conditions to obtain a lightning event result; The digital counting unit is used for updating a digital count value and uploading the digital count value when the lightning event result is judged to be an effective lightning event; And the instruction generation unit is used for generating a driving instruction after the uploading of the digital count value is completed.
4. The homology-measured lightning arrester lightning strike counting system of claim 1, wherein the mechanical drive and count module comprises: A driving signal receiving unit for receiving the driving instruction; a pulse current generation unit for converting a power supply voltage into a pulse current according to the driving instruction; an electromagnetic driving unit for generating an electromagnetic driving force by the pulse current; the mechanical counting execution unit is used for carrying out carry operation through the electromagnetic driving force to finish mechanical counting; and the state feedback unit is used for generating a state feedback signal when the carry operation is completed.
5. The homology-measured lightning arrester lightning strike counting system of claim 4, wherein the status feedback unit comprises: the auxiliary contact assembly is arranged in the mechanical counting execution unit and generates on-off state change according to carry motion of the mechanical character wheel; and the signal acquisition component is used for monitoring the on-off state change in real time and sending the state feedback signal to the digital processing and counting module.
6. The homology-measured lightning arrester lightning strike counting system of claim 5, further comprising: The closed loop verification module is respectively connected with the digital processing and counting module and the mechanical driving and counting module and is used for collecting the state feedback signal for verification when a driving instruction is detected to obtain a mechanical counting execution result; and the exception handling module is used for executing exception handling actions when the mechanical counting execution result is not detected to be successful within the preset time.
7. The homology-measured lightning arrester lightning strike counting system of claim 6, wherein the anomaly processing module comprises: the retry control unit is used for triggering retry driving action when the mechanical counting execution result is failure; and the fault reporting unit is used for carrying out fault marking and reporting fault information when the retry driving action reaches the maximum times and the mechanical counting execution result is failure.
8. A method of lightning strike counting for a lightning arrester for use in a homologous measurement according to any of claims 1 to 7, the method comprising: when lightning stroke occurs, collecting lightning current signals in real time and outputting homologous voltage signals; Conditioning the homologous voltage signals to obtain standard voltage signals; sampling the standard voltage signal, and judging based on preset double conditions to obtain a lightning event result; When the lightning stroke event result is an effective lightning stroke event, executing digital counting action to update and generating a driving instruction; Generating pulse current according to the driving instruction, and counting based on the pulse current.
9. An electronic device comprising a memory and a processor, the memory having stored therein a computer program which, when executed by the processor, causes the processor to perform the steps of the lightning arrester lightning strike counting method of homology measurement according to claim 8.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed, implements the lightning arrester lightning strike counting method of homology measurement according to claim 8.

Description

Lightning arrester lightning stroke counting system and method for homologous measurement Technical Field The application relates to the technical field of lightning stroke counters, in particular to a lightning stroke counting system and method for a lightning arrester for homologous measurement. Background The lightning arrester is used as a core overvoltage protection device of a power system, and the running state of the lightning arrester directly determines the safety of key electrical equipment such as a transformer, a switch device and the like. The lightning stroke counter is used as an important accessory of the lightning arrester, the recorded action times are core basis for evaluating the aging degree of the lightning arrester, analyzing the lightning stroke frequency of a line and making an operation, maintenance and overhaul plan, and the lightning stroke counter has an irreplaceable function for guaranteeing the reliable operation of a power grid. Currently, in order to meet both reliability and intelligent requirements, a mechanical and digital counting system is often configured for a high-voltage lightning arrester. However, this concurrent mode causes severe data consistency problems in practice. Under the traditional technical path, the mechanical counter and the digital counter are mutually independent and are respectively provided with a sensing unit and a judging logic, so that the response of the mechanical counter and the digital counter to the same lightning stroke event is not synchronous, the mechanical mechanism is limited by inertia and minimum driving energy, the lightning current with small amplitude is easy to leak and count, and the electronic circuit is easy to generate false count in a complex electromagnetic environment due to insufficient anti-interference capability. Finally, the situation of 'counting a plurality of doors and contradicting each other' is caused, so that operation and maintenance personnel are difficult to collect information, and effective utilization of data is severely restricted. Disclosure of Invention In view of the above, the application provides a lightning arrester lightning stroke counting system and a lightning arrester lightning stroke counting method for homologous measurement, which are used for solving the problem that in the prior art, the digital counter and the mechanical counter are inconsistent in counting caused by independent measurement, so that the deviation caused by independent measurement of a double system is eliminated, and the operation and maintenance efficiency is improved. The application provides a lightning arrester lightning stroke counting system and a lightning arrester lightning stroke counting method for homologous measurement, which adopt the following technical scheme: a lightning arrester lightning strike counting system for homologous measurement, comprising: the signal acquisition module is used for acquiring lightning current signals and outputting homologous voltage signals; The digital processing and counting module is connected with the signal acquisition module and used for conditioning the homologous voltage signals to obtain standard voltage signals, sampling the standard voltage signals, judging based on preset double conditions to obtain lightning event results, and executing digital counting action to update and generate driving instructions when the lightning event results are effective lightning events; And the mechanical driving and counting module is connected with the digital processing and counting module and is used for generating pulse current according to the driving instruction and counting based on the pulse current. By adopting the technical scheme, the signal acquisition module is used as a system unique signal source to ensure that an object processed by the digital and mechanical counting system is derived from the same lightning current event, measurement deviation caused by sensor difference is eliminated from a physical layer, the digital processing and counting module is used for conditioning and sampling homologous voltage signals and carrying out joint judgment by using preset amplitude and duration double conditions so as to distinguish effective lightning strokes from instantaneous interference, the internal digital counting update and the driving instruction sending to the mechanical driving module can be triggered simultaneously only after the effective event is confirmed to ensure the uniqueness of the counting event, the mechanical driving and counting module is used as a controlled execution unit to receive the instruction from the digital processing module and generate high-reliability pulse current to drive the mechanical counter to synchronously act, the problem of asynchronous counting caused by independent operation of a double system is fundamentally solved, and the data accuracy and operation and maintenance decision efficiency are improved. Optionally, the signal