High voltage cable state monitoring system based on protection earth box and realization method by using the same

Abstract

The invention discloses a high voltage cable state monitoring system based on a protection earth box and a realization method by using the same. The monitoring system comprises a high frequency current partial discharge collection unit, a cable middle joint ultrasonic wave partial discharge, a cable middle joint optical fiber temperature measurement unit, an earth box state monitoring unit, a gas detection unit, an environment temperature-humidity detection unit, a water level alarm unit, an ARM processor unit, a wireless GPRS module and a remote monitoring main station; and the monitoring method comprises steps of reading monitoring data and performing judgment and alarming on monitored data. The high voltage cable state monitoring system based on the protection earth box and the realization method can evaluate and diagnose the monitored data, greatly save resources and improves operation efficiency.

Description

technical field [0001] The invention relates to a high-voltage cable state monitoring system based on a protective grounding box and a realization method thereof. Background technique [0002] With the development of the city and the increase of electricity consumption, the phenomenon of high-voltage cable failure occurs from time to time. In most cases, the operating environment of the equipment is harsh and unattended. It is not easy to be found after a partial failure of the cable, and the spread of the accident will cause a major accident. It will affect normal production and cause economic and reputational losses to power companies. Therefore, preventing accidents has become the foundation of safe production. In recent years, online monitoring of the running state of high-voltage cables has been carried out in the world to avoid the occurrence of cable running accidents by discovering hidden defects in advance. The incidence of electrical accidents. [0003] The high-...

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Problems solved by technology

[0004] At present, offline and online detection of partial discharge of high-voltage cables and monitoring of the operating environment are carried out in many places. Most of these devices or instruments are installed outside the switch cabinet or grounding box, and the installation position cannot be fixed. With the extension of time and changes in field equipment, reliable The reliability cannot be guaranteed; most of these detection methods for partial discharge of high-voltage cables are technically complex and difficult to analyze, requiring professionals to carry out a large number of technical processing such as map analysis and data fitting

The above problems restrict the promotion of these detection techniques.

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