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Breaker synchronous controller and control method thereof

A technology of synchronous controller and control method, applied in circuits, electrical components, electrical switches, etc., can solve the problems of many parts and large dispersion of action time, so as to reduce the transient process, improve the quality and reliability of power supply , the effect of low price

Inactive Publication Date: 2008-08-20
辽宁华锐电力有限公司
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  • Abstract
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Problems solved by technology

But the disadvantages are: completely rely on mechanical transmission, many parts, large dispersion of action time

Method used

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  • Breaker synchronous controller and control method thereof
  • Breaker synchronous controller and control method thereof
  • Breaker synchronous controller and control method thereof

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing.

[0036] Such as figure 1 As shown, according to the circuit breaker synchronous controller of the present invention, including voltage, current sensor, DSP controller 4, power power electronic module 5 and its driving module, it is characterized in that the current transformer 1 connected with the circuit breaker 6 and A voltage transformer 2, a zero-crossing comparison circuit 3 connected to the current transformer 1 and the voltage transformer 2, a DSP controller 4 connected to the zero-crossing comparison circuit 3, and a power supply connected to the DSP controller 4 The power electronic module 5 and its driving module are composed, and the circuit breaker 6 is connected with the power electronic module 5 .

[0037] Such as figure 2 As shown, the DSP controller 4 includes a parallel waveform shaping circuit 9 and a level conversion circuit 10, a DSP chip 11 connected ...

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Abstract

The invention relates to a breaker synchronous controller and the control method thereof, which realize synchronous control of a medium-high voltage breaker by modern powder electronic technology, belonging to the field of breaker controller technology in power supply. The synchronous controller comprises a voltage current sensor, a DSP controller, a power electronic module and the driving module thereof, a zero-crossing comparison circuit, a DSP control circuit consisting of a parallel wave shaping circuit, a level translation circuit, a DSP chip and an EEPROM for storing the characteristic parameters of the breaker, the DSP controller detects the zero-crossing time of the voltage across or the current flowing the breaker, calculates the delay time according to the characteristic parameters of the breaker, and sends out a control instruction, the power electronic driving module receives the weak signal control instruction sent by the DSP, a secondary control loop of the power electronic is made by shaping and amplifying, thus to realize breaker synchronous control, improve the quality and reliability of a power system. The structure is simple, and the price is low.

Description

technical field [0001] The invention relates to the technical field of circuit breaker controllers in electric power supply, in particular to a circuit breaker synchronous controller and a control method for realizing synchronous control of medium and high voltage circuit breakers by adopting modern power electronic technology. Background technique [0002] With the development of the national economy and the improvement of people's living standards, the society's demand for electricity is increasing. The publication and implementation of the Electric Power Law requires the power supply sector to provide safe, economical, reliable and high-quality power. In the power supply and distribution system, the circuit breaker is a very important electrical equipment. It has two main purposes: one is the control function, that is, according to the needs of the grid operation, a part of the equipment or line is put in or cut out; the other is the protection function, that is, When a ...

Claims

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Application Information

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IPC IPC(8): H01H9/56
Inventor 陈建业王科李治平
Owner 辽宁华锐电力有限公司
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