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Simple and convenient analog breaker circuit

A simple and convenient technology for simulating a circuit breaker, which is applied in the field of relay protection device testing with a microcomputer. It can solve the problems of inconvenient debugging and maintenance personnel, inconvenient portability, high price, etc., and achieves stable test performance, light weight and low cost. Effect

Inactive Publication Date: 2007-08-01
BEIHAI YINHE HI TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the analog circuit breakers on the market cannot be used with the relay protection test device of the microcomputer, and a few can be used with the microcomputer. Simultaneous tripping, three-phase separate / simultaneous closing function, in each phase tripping and closing circuit, there is an "auxiliary contact" that can cut off DC 220V, 5A, and can simulate the actual circuit breaker's action capacity, output DC voltage, opening and closing time Adjustable and other functions
Because such equipment is expensive, bulky, heavy, and not easy to carry, it brings great inconvenience to debugging and maintenance personnel.

Method used

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  • Simple and convenient analog breaker circuit

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Embodiment Construction

[0008] Referring to accompanying drawing 1, Fig. 1 is the circuit schematic diagram of the present invention, can find out from Fig. 1 that SOURCE1 is the 220V AC mains output source, BRIDGE1 is the rectifier bridge pile, +KM is the positive power supply bus bar of BRIDGE1 output DC, -KM is BRIDGE1 outputs the negative power supply bus of DC, and the DC 220V is between the bus +KM and the bus-KM. HCJ is the coil of the closing control relay, HCJ1 is the normally open contact of the closing control relay, TCJ is the coil of the trip control relay, TCJ1 and TCJ3 are the normally closed contacts of the trip control relay, TCJ2 and TCJ4 are the normally open contacts of the trip control relay Contacts, HQ is the coil of the closing relay, HQ1 is the normally open contact of the closing control relay, TQ is the coil of the closing relay, TQ1 is the normally closed contact of the closing control relay, V1, V2, V3, V4 are the coils Current discharge diode, TWD is the indicator light ...

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Abstract

A simple mimic-disconnecting switch circuit comprises commutating bridge, direct current replay, LBD, diode and resistance, the four direct current replays set in mimic-disconnecting switch circuit constructs logic action circuit of the mimic-disconnecting switch, it includes a HQ in mimic-disconnecting switch switching loop, a HCJ in simulating switching control loop, a TQ in mimic-disconnecting switch tripping loop, a TCJ in simulating tripping control loop. The circuit of the invention is simple, test property is stable, the cost is low, and the capacity is small, the weight is light, it suits for engineering maintain personnel to take, and it is a assistant tool for debugging locale.

Description

Technical field: [0001] The invention relates to the design of a simple analog circuit breaker circuit used in the test of a relay protection device with a microcomputer. Background technique: [0002] For substations with a voltage level below 35KV in the power system, during the installation and maintenance of the relay protection device, in order to ensure the safe and reliable operation of the relay protection device, functional debugging of the relay protection device is required. When debugging the function of the relay protection device, it is necessary to connect the trip position input contact, closing position input contact, trip exit contact, and close exit contact of the relay protection device with the on-site circuit breaker. When the test conditions are available, if the relay protection device needs to be debugged, the simulated circuit breaker must be brought to the site to test the function of the relay protection device. At present, most of the analog cir...

Claims

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Application Information

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IPC IPC(8): H01H71/74H02H3/02
Inventor 陈源宜
Owner BEIHAI YINHE HI TECH INDAL
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