Disconnecting link control system

A control system and knife switch technology, applied in information technology support systems, electrical components, emergency protection circuit devices, etc., can solve problems such as the inability to determine the correctness of the locking logic from the wiring, high requirements for maintenance personnel, and high probability of misoperation. It achieves the effect of facilitating troubleshooting, low level requirements, and stable and reliable logic

Active Publication Date: 2022-04-05
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a knife switch control system to solve the problem of using PLC controller programming to realize knife switch control, resulting in program instability, high probability of misoperation, high requirements for maintenance personnel in programming, and inability to determine the correctness of the locking logic from the wiring. sexual problems

Method used

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  • Disconnecting link control system
  • Disconnecting link control system
  • Disconnecting link control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 The structural diagram of the knife switch control system provided by Embodiment 1 of the present invention, the knife switch control system of the embodiment of the present invention is used to control a plurality of knife switches in the bay on the bus, and the bay includes a knife switch with an auxiliary switch and circuit breakers, such as figure 1As shown, the knife gate control system includes an auxiliary switch 1, a sampling module 2, a control module 3 and a control loop.

[0034] The interval refers to the branch lines on the bus. The branch lines are equipped with isolation switches, grounding switches, circuit breakers, relays, etc. The switch has an obvious disconnection point, does not have an arc extinguishing device, and cannot be opened and closed under load. , the device that needs to be opened and closed after the switch cuts off the power supply. In the interval, the power-off equipment is separated from the live equipment by separating th...

Embodiment 2

[0042] The embodiment of the present invention is optimized on the basis of the first embodiment above, as image 3 As shown, the sampling module 2 of the embodiment of the present invention includes a first resistor R1 and a second resistor R2. One end of the first resistor R1 is connected to the auxiliary switch 1, and the other end is grounded through the second resistor R2. The first resistor R1 and the second resistor The common node of the resistors R2 is the output terminal OUT of the sampling module 2 .

[0043] In an optional embodiment, the sampling module 2 also includes an indicator light D, the second resistor R2 is grounded through the indicator light D, and the indicator light is on when the auxiliary switch 1 outputs a high level signal, indicating that the knife switch is open. Conversely, when the indicator light is off, it means that the knife switch is closed.

[0044] In another optional embodiment, the sampling module 2 further includes a filter capacito...

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PUM

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Abstract

The embodiment of the invention discloses a disconnecting link control system which comprises a disconnecting link provided with an auxiliary switch and a circuit breaker, a control loop of the disconnecting link comprises a relay and a mechanism box, the power input end of the mechanism box is connected with a power source through the relay, and the input end of a sampling module is connected with the power source through the auxiliary switch. The control module comprises an AND gate circuit and a triode, a plurality of input ends of the AND gate circuit are connected with the output end of at least one sampling module, a base electrode of the triode is connected with the output end of the AND gate circuit, a collector electrode of the triode is connected with a power supply, and an emitting electrode of the triode is grounded through a coil of the relay. In addition, the AND gate circuit outputs the high level when the high level is input at the input ends and outputs the low level when the low level is input at any input end, the system does not need to be programmed, the requirement for the personnel level is low, the logic of the AND gate circuit is stable and reliable, and the correctness of the locking logic of the control loop can be determined through system wiring.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electrical control, and in particular to a knife switch control system. Background technique [0002] In the distribution network, the isolation switch and the grounding switch are commonly used switches. Each switch is equipped with an auxiliary switch for responding to the switching value of the switch, and a mechanism box is provided to control the action of the switch. The mechanism box is in When there is power input, it can be unlocked to operate the knife switch. [0003] Usually, whether the mechanism box corresponding to a knife switch has power input is determined by the switching value of other knife switches in the bay, that is, the auxiliary switches of other knife switches in the bay are related to the operation logic of a knife switch in turn. The mechanism box of the knife switch is connected in series between the positive pole and the negative pole of the power supp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H02H7/22
CPCY02E60/00Y04S10/20
Inventor 卢迪勇张时姚进岐卢贺年杨伟涛赵文婷林培霞胡军李泽时张宇周九江桂荷茹梁海华
Owner GUANGDONG POWER GRID CO LTD
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