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Circuit breaker controller and control method

A control method and controller technology, applied in the direction of automatic disconnection emergency protection device, circuit device, emergency protection circuit device, etc., can solve the problems of high implementation cost, unreliable hardware peak judgment method, etc.

Active Publication Date: 2019-05-03
SEARI ELECTRIC TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN201310428241.1 adopts the hardware judgment method, which has the defects of unreliable hardware peak judgment method and high implementation cost

Method used

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  • Circuit breaker controller and control method
  • Circuit breaker controller and control method
  • Circuit breaker controller and control method

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Experimental program
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Embodiment Construction

[0038] refer to figure 1 as shown, figure 1 A structural block diagram of a controller of a circuit breaker according to an embodiment of the present invention is disclosed. The controller of the circuit breaker includes: interface circuit 101, MCR / HSISC detection circuit 102, signal acquisition circuit 103, single-chip microcomputer control circuit 105, data storage circuit 109, liquid crystal display circuit 106, keyboard operation circuit 107, communication circuit 108, action circuit 104. The power supply circuit 110 and the RTC power supply circuit 111. Wherein interface circuit 101, MCR / HSISC detection circuit 102, signal acquisition circuit 103, data storage circuit 109, liquid crystal display circuit 106, keyboard operation circuit 107, communication circuit 108 and action circuit 104 are all connected to single-chip microcomputer control circuit 105, single-chip microcomputer control circuit 105 exchanges data with each of the above-mentioned circuits and controls t...

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Abstract

Provided are a circuit-breaker controller and control method, comprising: a data-read and signal-detection step (S102); reading data from a fast-read storage device, and detecting an MCR / HSISC state signal by means of an MCR / HSISC detection circuit; a function selection step (S104); selecting whether to execute an MCR function or an HSISC function, said selection being made on the basis of whether a jump is present in the MCR / HSISC signal; executing the MCR function (S106) or executing the HSISC function (S108); if the conditions for execution are satisfied, then performing a trip, and ending the process; if a termination condition is encountered during the process of execution, then ending the process. Also provided is a circuit-breaker controller for implementing the described control method. The circuit-breaker controller and control method use software to perform the MCR / HSISC functions, and have an advantage in terms of cost of implementation and detection stability; the controller is provided with an MCR / HSISC detection circuit and a fast-read / write storage-device circuit, allowing for fast startup of the controller and fast writing prior to power loss.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, more specifically, to a controller of a circuit breaker and a control method thereof. Background technique [0002] Circuit breakers are important protective appliances in power distribution systems. In recent years, with the continuous improvement of the application requirements of low-voltage circuit breakers, the requirements for intelligent controllers of circuit breakers have also become higher and higher, and the functions have become more and more complex. Not only the basic three-stage protection and ground fault protection are required, but also additional protections such as unbalance protection and neutral line protection are required. Some require auxiliary functions such as fault alarm record query, digital input / output (DI / DO) function, making current release (MCR) function, high set value short circuit instantaneous protection (HSISC) function, communication functi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/00
CPCH02H3/00
Inventor 王军万里浩周婷婷谈永根
Owner SEARI ELECTRIC TECH