Automatic throw-in device of backup closing coil for 10kV vacuum breaker

A vacuum circuit breaker and closing coil technology, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve the problems of coil insulation damage, burnt coil, insufficient energy, etc., and achieve fast conversion speed, high linearity, and improved The effect of power supply reliability

Active Publication Date: 2014-12-17
ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, if the energy obtained by the connecting rod from the coil is not enough, the mechanism is stuck, or the insulation of the coil is damaged, the coil will be energized for a long time and work i

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  • Automatic throw-in device of backup closing coil for 10kV vacuum breaker
  • Automatic throw-in device of backup closing coil for 10kV vacuum breaker
  • Automatic throw-in device of backup closing coil for 10kV vacuum breaker

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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] See figure 1 versus Picture 9 In the embodiment of the present invention, the 10kV vacuum circuit breaker standby closing coil automatic input device includes the standby coil automatic input circuit 1, the original closing circuit 3, the control power supply and the measurement and control device 4, and the control power supply includes the negative terminal 6 of the control power supply and the control Power supply positive terminal 5, spare coil automa...

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Abstract

The invention discloses an automatic throw-in device of a backup closing coil for a 10kV vacuum breaker. The automatic throw-in device comprises a backup coil auto-throw-in loop, an original closing loop, a control power source and a measurement and control device. The control power source comprises a control power negative end and a control power positive end. The backup coil auto-throw-in loop is characterized in that a control relay A is serially connected between an original closing coil and the control power negative end on the basis of the original closing loop; a series loop is parallelly connected between a normally closed assistant contact QF and the control power negative end; the series loop comprises the backup closing coil and a control relay B; the original closing loop is not changed. The backup closing coil is parallelly connected on the basis of the original closing coil, the backup closing coil can be automatically switched after an original brake coil burns out, power supply reliability is improved, service life of the closing coil is prolonged, and a closing coil operating environment is improved.

Description

technical field [0001] The invention relates to a measurement control system for protecting the operating mechanism of a circuit breaker, in particular to a control device for automatic input of a spare closing coil in the operating mechanism of a 10kV vacuum circuit breaker. Background technique [0002] With the development of the economy and society, the demand for electricity in the power system is also increasing, and the requirements for the safe and reliable operation of the power system are also getting higher and higher. The 10kV vacuum switch is widely used in the power system, so the 10kV vacuum switch plays a vital role in the reliable operation of the power grid. [0003] 10kV vacuum circuit breaker consists of three parts: circuit breaker body, operating mechanism and power supply. The reliability of the 10kV vacuum circuit breaker body has reached a very high level, and its mean time between failures has reached decades. However, in actual operation, the rel...

Claims

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Application Information

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IPC IPC(8): H02J9/06
Inventor 王冲韩蓬陈宁王传勇鲁统贺古守雨闫旭王瀚正渐伟
Owner ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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