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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

Pending Publication Date: 2019-01-01
STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The introduction of the self-holding contact of the TBJ anti-jump relay brings about a problem: once the switch fails to trip, the DL auxiliary contact does not switch, and the trip circuit cannot be disconnected, and the two ends of TQ are always charged until it burns out.
[0006] On the other hand, the introduction of the auxiliary contact of the trip circuit switch reduces the reliability of the switch trip. Once the auxiliary contact of the switch is not in good contact, the switch will refuse to move.
[0007] The above-mentioned traditional switch tripping circuit, the switch coil was burned accident and the switch refusal accident caused by the poor contact of the switch auxiliary contact, a large number of accidents occurred in the field operation

Method used

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  • Intelligent controller for preventing switch trip and coil burnout
  • Intelligent controller for preventing switch trip and coil burnout
  • Intelligent controller for preventing switch trip and coil burnout

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] refer to image 3 , in order to prevent the DC operating power supply in the intelligent controller from burning out the automatic remedial circuit (1), wherein the A and B terminals are respectively connected to the 220V AC power source used in the substation or the 220V AC power source outside the substation. The 220V AC power supply passes through a 1000W AC transformer with a transformation ratio of 220V / 160V, and then passes through a rectifier bridge composed of four diodes G1, G2, G3, and G4 that can pass 10A current, and C1, C2, C3, and C4. Four capacitors with a withstand voltage o...

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PUM

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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.

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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Application Information

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IPC IPC(8): H02H1/00H02H1/06H02H3/05H02H3/04
CPCH02H1/00H02H1/06H02H3/04H02H3/05
Inventor 陶永茂关凯李雨桐韩小虎刘鲁宁郎斌崔而实
Owner STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER
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