An interlocking device for a high-voltage incoming line cabinet and a self-generating cabinet

Abstract

The invention provides a high-voltage wire inlet cabinet and self-generating cabinet interlocking device, belonging to the technical field of power equipment. The device comprises a high-voltage wire inlet cabinet and a self-generating cabinet. Both the cabinet door of the high-voltage wire inlet cabinet and the cabinet door of the self-generating cabinet are provided with latches, and a same key is used for the two latches. The circuit breaker support of the high-voltage wire inlet cabinet is arranged on a support guide rail in a front and back sliding way. An upper moving contact and a lower moving contact are installed on a vacuum circuit breaker. An upper static contact is arranged on an upper contact box, and a lower static contact is arranged on the lower contact box. A small bus terminal is orderly connected to a secondary wire room, a secondary interlock and a vacuum circuit breaker. The upper static contact is connected to a three-phase terminal. The lower static contact is connected to one end of a current transformer. The other end of the current transformer is connected to a grounding knife and a cable. The cabinet door of the high-voltage wire inlet cabinet is also provided with a notch. One side of the support guide rail is provided with a limit locking component. A condition that the high-voltage wire inlet cabinet and the self-generating cabinet are at a working state at the same time can be effectively prevented, an accident is avoided, and the safety protection is good.

Description

technical field [0001] The invention relates to the technical field of electric power equipment, in particular to an interlocking device for a high-voltage incoming line cabinet and a self-generating cabinet. Background technique [0002] Power equipment mainly includes two categories: power generation equipment and power supply equipment. Power generation equipment is mainly power plant boilers, steam turbines, gas turbines, water turbines, generators, transformers, etc. Power supply equipment is mainly transmission lines of various voltage levels, transformers, contactors and more. High-voltage incoming cabinet is a common electrical equipment. The high-voltage incoming cabinet is mainly used to break and close the circuit between the power grid and the user, and has a relay protection function and an indicator; it is used to protect the user's power supply line and electrical equipment. If a major accident occurs on the line or equipment, local protection will be provide...

AI Technical Summary

Problems solved by technology

The self-generating cabinet is a kind of spare cabinet. When the high-voltage incoming line cabinet is not working, the self-generating cabinet is started. The two cannot be used at the same time. If both are started at the same time, it will cause a safety accident.

At present, both the high-voltage incoming line cabinet and the self-generating cabinet are equipped with mortise locks, and the respective mortise locks are equipped with independent keys. The high-voltage incoming line cabinet and the self-generating cabinet cannot be interlocked, and the safety is poor.

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