GIS equipment mechanical vibration abnormal sound defect simulation system and method

Abstract

The invention relates to a GIS equipment mechanical vibration abnormal sound defect simulation system and method, and belongs to the field of gas insulated metal-enclosed switchgear. The system comprises a main loop and vibration abnormal sound defect simulation module, a resonance boosting and induction current boosting module, a vibration characteristic detection module, a measurement and operation control module, and a grounding and overcurrent protection module. The system can realize simulation setting of operation type abnormal sound mechanical defects of units such as a circuit breaker,an isolation switch and a grounding switch and related periodic abnormal sound defects such as abrasion, fatigue and looseness of a conductive loop and a low-potential loop, and can analyze vibrationcharacteristic changes under load changes at the same time. The system is flexible and diverse in mechanical vibration abnormal sound defect setting, equivalent to actual engineering and high in practicability.

Description

technical field [0001] The invention belongs to the field of gas-insulated metal-enclosed switchgear, and relates to a GIS equipment mechanical vibration abnormal sound defect simulation system and method. Background technique [0002] Gas insulated metal-enclosed switchgear (Gas Insulated Switchgear—GIS) is widely used due to its high reliability, low maintenance cost, and small footprint. It mainly plays the role of control and protection in power systems. However, during the operation of GIS equipment, failures due to insulation and mechanical defects still occur from time to time, especially mechanical defects, which have many latent types, great harm, and difficult maintenance. When the GIS equipment has defects such as poor contact of contacts and loose bolts of conductive fasteners, abnormal noise and vibration will be generated under the action of the operating force of the switch and the alternating electric force generated by the load current. Long-term vibration ...

AI Technical Summary

Problems solved by technology

However, for the mechanical defects of GIS, they often focus on the abnormal vibration during the action process caused by the jamming or fatigue of the operating mechanism of the circuit breaker. For the loose parts and defects of the spring caused by the loosening of the fastening bolts inside the GIS in the running state Rarely pay attention to the abnormal sound and vibration of abnormal sound defects such as fatigue loose faults under electromagnetic excitation

[0006] 2) Lack of simulation of different types of vibration defects and comparative study of vibration fingerprint characteristics

Due to the variety and complexity of the internal structural units of GIS equipment, it is difficult to disassemble

Especially for GIS equipment operating on site, the maintenance work is complicated, and the power outage maintenance time is long

Therefore, the existing studies on the internal mechanical defects of GIS equipment often present the characteristics of case-specificity, locality, and lack of types. Complete vibration signature fingerprint and data signature library

[0007] 3) There is a lack of comparative research on the vibration characteristics of split-type and integrated true-type GIS equipment under high-voltage and high-current loading at the same time

First, there is currently a lack of a comparative research platform for the vibration characteristics of split-type and integral-type true GIS equipment. The existing platform can only carry out single loading of voltage or current, and cannot conduct coupling research, and cannot fully simulate the operating vibration state of on-site GIS equipment; It is an existing simple GIS equipment vibration characteristic simulation device, which is far from the on-site split type and integrated type true GIS equipment, and the vibration characteristic simulation has limitations

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