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Intelligent switching device for isolation switch operation power supplies at two sides of circuit breaker

A technology of isolating switch and operating power supply, applied in circuit devices, electrical components, etc., can solve the problems of frequent personal injury accidents, limited energy of operators, wrong intervals, etc., to reduce labor intensity, avoid human error operation accidents, Good social and economic benefits

Active Publication Date: 2015-11-18
史娟娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In addition, in the operation of the isolation switch, manual operation requires concentration. A large-scale operation takes two hours or even longer, and the operator has limited energy.
The consequences of fatigue operation will lead to personnel operating at the wrong interval and using the wrong isolating switch to operate the power supply. If there is the above proof, the wrong interval and the wrong isolating switch to operate the power supply may pay a bloody price.
Although the substation has an anti-misoperation operating system and the measurement and control device has an electrical lock, personal casualties still occur frequently in the operation of the power system isolating switch.

Method used

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  • Intelligent switching device for isolation switch operation power supplies at two sides of circuit breaker
  • Intelligent switching device for isolation switch operation power supplies at two sides of circuit breaker
  • Intelligent switching device for isolation switch operation power supplies at two sides of circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment one: see figure 1 , image 3 , Figure 4 , an intelligent input device for power supply operated by isolating switches on both sides of the circuit breaker, the device includes

[0058] a. Local interval voice checking circuit, the interval voice checking circuit is connected with the start switch of the device to provide local checking signal Bd;

[0059] b. The selector switch used to select and control the isolating switch for opening operation or closing operation, the Kf signal is given when the opening is selected, and the Kh signal is given when the closing is selected;

[0060] c. Connected to the auxiliary contact of the operating mechanism of the circuit breaker, the signal acquisition circuit of the circuit breaker opening state gives the Df signal.

[0061] d. The closing state signal acquisition circuit of the power side isolating switch connected to the auxiliary contact of the power side isolating switch operating mechanism gives the Dh...

Embodiment 2

[0086] Embodiment two: see Figure 2-4 , the second embodiment is basically the same as the first embodiment, and the similarities will not be repeated. The difference is that the second embodiment also includes a remote interval checking circuit, and the checking switch is arranged in the remote control room, and the loop provides the remote checking signal Hd, The Hd signal replaces the Bd signal described in the first embodiment.

Embodiment 3

[0087] Embodiment three: see Figure 5 , Figure 3-4 , Figure 7 , an intelligent input device for power supply operated by isolating switches on both sides of the circuit breaker, the device includes

[0088] a. Local interval voice checking circuit, the interval voice checking circuit is connected with the start switch of the device to provide local checking signal Bd;

[0089] b. The selector switch used to select and control the isolating switch for opening operation or closing operation, the Kf signal is given when the opening is selected, and the Kh signal is given when the closing is selected;

[0090] c. Connected to the auxiliary contact of the operating mechanism of the circuit breaker, the circuit breaker opening state signal acquisition circuit gives the Df signal.

[0091] d. The closing state signal acquisition circuit of the power side isolating switch connected to the auxiliary contact of the power side isolating switch operating mechanism gives the Dh s...

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Abstract

The invention relates to an intelligent switching device for isolation switch operation power supplies at the two sides of a circuit breaker. The intelligent switching device comprises a local interval voice verification loop, a selection switch, a circuit breaker switch-off state signal acquisition loop, a power supply-side isolation switch switch-on state signal acquisition loop, a load-side isolation switch switch-off state signal acquisition loop, a switch-on and switch-off switching power supply control signal sending-out loop of a load-side isolation switch operation motor and a switch-on and switch-off switching power supply control signal sending-out loop of a power supply-side isolation switch operation motor, wherein the local interval voice verification loop is used for providing a local verification signal Bd; the selection switch is used for performing switch-on and switch-off operation and selecting to give out a signal Kf during switching off and give out a signal Kh during switching on; the circuit breaker switch-off state signal acquisition loop is used for giving out a signal Df; the power supply-side isolation switch switch-on state signal acquisition loop is used for giving out a signal Dh; and the load-side isolation switch switch-off state signal acquisition loop is used for giving out a signal Ff. By the intelligent switching device, a misoperation accident of a knife switch of a power system can be prevented, the man-made misoperation accident of the knife switch is reduced to zero, the jobs of protecting a human body, a power grid and the device are effectively fulfilled, and the running reliability and economy of the power system is improved.

Description

technical field [0001] The invention relates to the operation control technology of the isolating switch in the power system, in particular to an intelligent input device for operating the power supply of the isolating switch on both sides of the circuit breaker. Background technique [0002] When the electrical equipment of the substation is in the event of a power outage for maintenance, the substation operator must prepare a switching operation ticket in advance. The switching operation ticket involves a certain interval or a line power failure or power transmission work (one switching operation ticket can only fill in one operation task), the power failure operation of electrical equipment includes the equipment from running to standby, and the power transmission operation includes equipment from standby to standby. run. [0003] An electrical compartment includes a high-voltage circuit breaker and two isolating switches on both sides of the high-voltage circuit breaker...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 史娟娟黄治杰于子航王慧琴
Owner 史娟娟
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