Intelligent controller for preventing switch trip and coil burnout

A technology of intelligent controller and trip coil, which is applied in the parts of emergency protection device, emergency protection device with automatic disconnection, and electrical components, etc., can solve the problem of switch coil burning, switch trip reliability decline, and DL auxiliary contact not switching. and other problems to achieve the effect of increasing reliability and preventing burnout
CN109119964APending Publication Date: 2019-01-01STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER
Publication Date
2019-01-01

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Abstract

The invention belongs to the technical field of power system relay protection, and specifically relates to an intelligent controller for preventing switch trip and coil burnout, solves problems of a circuit breaker trip control loop, and mainly improves the switch trip reliability and prevents the trip coil burnout. The controller achieves the intelligent control of an original switch control loop, and effectively prevents the burnout of a switch trip coil and a switch rejection accident caused by a switch auxiliary contact. The controller also provides the functions of trip coil breakage monitoring, circuit breaker auxiliary contact reliability monitoring, trip coil temperature monitoring and switching-on pulse recording of all parts.
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Description

technical field

[0001] The invention belongs to the technical field of electric power system relay protection, and in particular relates to an intelligent controller for preventing switch tripping coils from burning out, solving problems in the circuit breaker (switch) tripping control loop, mainly increasing the reliability of switch tripping and preventing tripping Coil burned. Background technique

[0002] At present, the trip contact circuit output by the relay protection device of the power components (line, transformer, busbar, etc.) of the power system is connected with the switch trip coil circuit to form a switch control circuit. A basic structure is as follows: figure 1 , figure 2 shown.

[0003] In the tripping circuit of the above switch, TBJ is an anti-tripping and tripping self-holding relay. When the protection trips, the tripping relay contact TJ is closed, and 220 volts are applied to both ends of the tripping coil TQ through the TBJ relay current coil an...

Claims

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