Switching device defect intelligent detection system

Abstract

The invention provides a switching device defect intelligent detection system which includes at least one detection terminal and an analyzing and monitoring system. The detection terminals are used for collecting a tripping / closing stroke and speed signal of each switching device, a current signal of the tripping / closing coil of each switching device and a vibration signal in tripping / closing of each switching device in real time, and sending the signals to the analyzing and monitoring system. The analyzing and monitoring system is connected with the detection terminals through a communication device, and is used for acquiring the detection data of the detection terminals and carrying out warning analysis and evaluation and data monitoring processing according to the parameters to monitor and / or issue a warning for any defect or fault of the switching devices. Switching device defect detection is implemented through monitoring the action current and other signals of the tripping / closing coils. More defects can be detected. The system has a wider scope of application.

Description

technical field [0001] The invention relates to a switchgear in the technical field of electrical engineering, in particular to an intelligent defect detection system for a switchgear. Background technique [0002] Compared with transformers and generators, the on-line monitoring technology of high-voltage switchgear started relatively late. In a sense, the concepts of "GIS technology" and "condition-based maintenance" have promoted the development of on-line monitoring technology for switchgear. But it was not until the 1990s that the on-line monitoring technology of switchgear, especially high-voltage circuit breakers, gradually developed. This is mainly because the current power system accidents no longer measure the economic losses caused by them simply by their harm to the power system. [0003] American scholars took the lead in giving the relationship between the life of a circuit breaker and the breaking current, and proposed the concept of "electrical life of arc-e...

AI Technical Summary

Problems solved by technology

[0005] After searching, the Chinese patent CN201210036531.7 (publication number CN102590739A) discloses an on-line detection device and detection method for the opening and closing cycle of a circuit breaker in a power switch cabinet, which solves the large measurement randomness existing in the existing on-line detection device and method. Problems such as unreasonable signal processing and inaccurate detection results

However, this patented technology only provides on-line detection of the opening and closing cycle of the circuit breaker, and judges whether it is an alarm through cycle detection, and the scope of use and detection defects are limited.

[0006] In further searches, no technical reports have been found on the intelligent detection of switchgear using other related signals of the opening and closing coils

Images