Anti-misoperation device of electromagnetic lock by monitoring leakage current of arrester

一种泄漏电流、防误装置的技术，应用在测量装置、测量电、测量电变量等方向，能够解决无法满足电力系统生产要求等问题

Inactive Publication Date: 2015-12-30
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing conventional high-voltage live display devices on the market need power-off installation and maintenance, which can no longer meet the production requirements of the power system.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Such as figure 1 As shown, an electromagnetic lock anti-malfunction device by monitoring the leakage current of the arrester, the high-voltage live display device includes a three-phase current sensor 1, a TVS tube 2, a three-phase amplification filter circuit 3, a main control MCU 4, an LED drive circuit 51, and a lock drive Circuit 61, temperature and humidity sensor 7 and temperature and humidity adjustment circuit, the three-phase current sensor 1 is a through-hole current sensor, and the lower lead of the arrester passes through the middle of the three-phase current sensor 1, avoiding the influence of the electric field of adjacent cables , to reliably and accurately indicate the electrified state of the measured line or equipment, and to eliminate misoperation and refusal to operate. The LED circuit includes an LED driver circuit 51 and an LED main circuit 52. The locking circuit includes a locking driver circuit 61 and an electromagnetic lock main circuit 62. The...

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PUM

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Abstract

The invention discloses an anti-misoperation device of an electromagnetic lock by monitoring the leakage current of an arrester. A high-voltage presence indication device comprises a three-phase current sensor, a TVS (Transient Voltage Suppressor), a three-phase amplification filter circuit, a master MCU (Microprogrammed Control Unit), an LED (Light Emitting Diode) circuit and a lockout circuit, wherein the LED circuit comprises an LED driving circuit and an LED main circuit; the lockout circuit comprises a lockout driving circuit and an electromagnetic lock main circuit; the output end of the three-phase current sensor is respectively connected with the input end of the TVS and the input end of the three-phase amplification filter circuit; the output end of the three-phase amplification filter circuit is connected with the input end of the master MCU; the output end of the master MCU is respectively connected with the input end of the LED driving circuit and the input end of the lockout driving circuit; the output end of the LED driving circuit is connected with the input end of the LED main circuit; and the output end of the lockout driving circuit is respectively connected with the input end of the electromagnetic lock main circuit. High-voltage equipment can realize installation and maintenance of the high-voltage presence indication device without power cut.

Description

technical field [0001] The invention relates to an electromagnetic lock anti-malfunction device by monitoring the leakage current of an arrester. Background technique [0002] With the development of society, electricity plays an irreplaceable role in human production and life. Therefore, it is particularly important to ensure the safety and stability of substation operating equipment. When the high-voltage electrical equipment (line) needs to be operated and overhauled, the staff needs to know whether the high-voltage equipment (line) has been powered off, so as to start the overhaul. For this reason, the appearance of the high-voltage electrification display, after it interfaces with the anti-mistake device, incorporates the information of whether it is live or not into the anti-mistake logic judgment and forcibly locks it, so as to effectively prevent misoperation accidents. [0003] At present, the existing conventional high-voltage live display devices on the market ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05B65/00E05B47/00G01R31/02H05K7/20
Inventor 归宇钱平吴健徐昕徐凯席俞佳杨海威王涤陈昱
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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