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Device and method for controlling motor operating mechanism of circuit breaker

An operating mechanism and control device technology, applied to circuit devices, power devices inside switches, electrical components, etc., can solve the problems of high manufacturing process requirements, uncontrollable motion process, complex transmission mechanism, etc., achieve short charging time, The effect of low cost and simple overall structure

Inactive Publication Date: 2011-01-26
SHENYANG POLYTECHNIC UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For circuit breakers, it is required that the operating mechanism can not only obtain a higher opening and closing speed, but also quickly realize the automatic reclosing operation. The existing operating mechanisms mainly include hydraulic operating mechanisms and spring operating mechanisms, most of which are composed of A complete set of mechanical devices consists of many parts, complex transmission mechanism, high manufacturing process requirements, high failure rate, and uncontrollable motion process. The motor operating mechanism is a new type of operating mechanism, and it requires mechanical energy to control

Method used

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  • Device and method for controlling motor operating mechanism of circuit breaker
  • Device and method for controlling motor operating mechanism of circuit breaker
  • Device and method for controlling motor operating mechanism of circuit breaker

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Embodiment Construction

[0034] In this design, the control chip is PIC16F873A single-chip microcomputer, PIC16F873A single-chip microcomputer has three sets of I / O interfaces of RA, RB, and RC, the optocoupler adopts TLP521 type, the power transistor is IGBT, the capacitor is 20000uF / 250V, the switch The power supply is ZCC100-2P220AK type. In the grid voltage and current acquisition circuit, the miniature precision voltage and current transformers of SPT204A and SCT254AZ of Xingge Company are selected. The linear optocoupler in the capacitance voltage detection circuit adopts the HCNR200 model. The single-chip microcomputer and the upper computer communicate and transmit through the driver chip SN75LBC184 that conforms to the RS-485 standard. The motor operating mechanism is a DC motor.

[0035]The device includes switching power supply 1, energy storage capacitor 2, motor winding 5, control chip 3, opening and closing capacitor voltage detection circuit 6, circuit breaker position detection circu...

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Abstract

The invention relates to a device and a method for controlling a motor operating mechanism of a circuit breaker, wherein the device comprises a switching power supply, an energy storage capacitor, a motor winding, a control chip, a switching capacitor voltage testing detecting circuit, a circuit breaker position testing cdetecting circuit, a near control switching circuit, a remote control switching circuit, a relay discharge driving circuit, a capacitor voltage display circuit, a communication interface circuit, a power network voltage-current sampling circuit, a communication interface circuit and a motor operating mechanism driving circuit. The device and the method are advantageous for improving the closing and opening capacity, the mechanical and electric service life, and the reliability of the circuit breaker. The device and the method have wide applicability and can make use of both direct current and alternating current.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation equipment, in particular to a circuit breaker motor operating mechanism control device and a control method, which are used for driving control of the motor operating mechanism used in conjunction with high-voltage switchgear. Background technique [0002] For circuit breakers, it is required that the operating mechanism can not only obtain a higher opening and closing speed, but also quickly realize the automatic reclosing operation. The existing operating mechanisms mainly include hydraulic operating mechanisms and spring operating mechanisms, most of which are composed of A complete set of mechanical devices consists of many parts, complex transmission mechanism, high manufacturing process requirements, high failure rate, and uncontrollable movement process. The motor operating mechanism is a new type of operating mechanism, and it requires mechanical energy to cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00H01H3/26
Inventor 徐建源李家珏刘爱民林莘李永祥
Owner SHENYANG POLYTECHNIC UNIV
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