Moving contact vertical motion type high voltage isolating switch capable of detecting position of moving contact

Abstract

The invention relates to a moving contact vertical motion type high voltage isolating switch capable of detecting the position of a moving contact. The isolating switch comprises the moving contact, a support and an auxiliary switch, and further comprises photoelectric switches and reflecting plates, wherein the reflecting plates are arranged on the moving contact; and the photoelectric switches are arranged on the support. For the specificity of a moving contact motion mode adopted by the vertical motion type isolating switch, angles of the reflecting plates of the isolating switch are accurately computed, and whether double reflecting plates or a single reflecting plate is adopted, the isolating switch can be ensured to accurately and reliably detect the position of the moving contact. The high voltage isolating switch online detects the position of the high voltage contact of the isolating switch in real time by utilizing a photoelectric technology, and has the characteristics of safety, reliability and accuracy in implementation.

Description

Technical field [0001] The invention relates to a high-voltage isolating switch, and more specifically, to a movable contact vertical movement type high-voltage isolating switch for detecting the position of the movable contact. Background technique [0002] In the design of intelligent substations, due to the realization of unattended functions, the selected high-voltage isolation switches generally use electric operating mechanisms to replace manual opening and pulling operations, but at the same time it brings a new problem. When there is a person operating, the person stands near the isolating switch and can directly observe the actual action of the main contact after the isolating switch is opened and pulled to determine whether the "open" and "close" are in place. However, after the electric operation is used, because the operator is remotely controlled in the background, it is impossible to observe the actual "open" and "close" status of the knife blade after the on-site a...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned method can solve the problems caused by background remote control to a certain extent, there are still deficiencies: judging the "open" and "close" states of the knife switch through the auxiliary switch on the rotating shaft is a secondary The indirect judgment method, the aging and damage of components, failure and other reasons may cause judgment errors, which cannot reflect the exact position of the high-voltage main contact 100%, thus bringing hidden dangers of accidents to safe operation and operation.

In particular, the intelligent electric substation is unattended. Through the remote control of the isolating switch in the background, there is a lack of intuitive understanding of its action. If the auxiliary switch makes a mistake in judging the isolating switch, the isolating switch will be disconnected to form an obvious disconnection and isolation. The basic function and purpose of these applications are out of the question

At this time, the operation of the isolating switch is extremely dangerous to the life safety of the operator. If an accident occurs, it will cause serious consequences, so the detection of the "open" and "close" states of the isolating switch is particularly prominent. and necessary

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