Intelligent cable short circuit grounding and temperature fault indicator

A technology for temperature faults and indicators, which is applied to fault locations, instruments, and measuring electronics. It can solve problems such as cable outlet parameters and status monitoring, low efficiency, and battery leakage, so as to improve alarm accuracy and reduce maintenance work. The effect of improving work efficiency

Inactive Publication Date: 2013-08-28
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the current distribution network automation system does not monitor the necessary parameters and status of the cable outlets, resulting in fault finding and operation and maintenance personnel unable to obtain the necessary information from the monitoring center, but mainly relying on manual line inspection section by section, which is inefficient
Due to the battery power supply, the battery leakage is serious in a humid environment, the service life of the indicator is greatly reduced, and the product maintenance workload is heavy

Method used

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  • Intelligent cable short circuit grounding and temperature fault indicator
  • Intelligent cable short circuit grounding and temperature fault indicator
  • Intelligent cable short circuit grounding and temperature fault indicator

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Embodiment Construction

[0026] The present invention is described in detail below in conjunction with accompanying drawing, as figure 1 It is a schematic diagram of the structure of the present invention, an intelligent cable short-circuit grounding and temperature fault indicator, the indicator includes a sensor high-voltage area and a host low-voltage area, and the sensor high-voltage area includes a short-circuit sensor unit, which is used to pass the phase-to-phase short-circuit fault signal through the short-circuit fault After being processed by the processing unit, it is transmitted to the host computer in the low-voltage area through the first electro-optic conversion circuit; the temperature sensor unit is used to collect the temperature and changes of the three-phase cable head when the cable is in normal operation, and store and save the temperature information before transmitting it to the low-voltage area The main engine; the grounding sensor unit is used to monitor the magnitude of the z...

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Abstract

The invention relates to intelligent cable short circuit grounding and a temperature fault indicator. The indicator comprises a sensor high voltage area and a host machine low voltage area, wherein the sensor high voltage area comprises a short circuit sensor unit, a temperature sensor unit and a grounding sensor unit, and the host machine low voltage area is used for receiving and processing data information transmitted by the short circuit sensor unit, the temperature senor unit and the grounding sensor unit. By means of intelligent cable short circuit grounding and the temperature fault indicator, the accuracy rate of short circuit and grounding failure warning is improved, the fault section is positioned fast, the intensity of maintenance work is reduced, and work efficiency is improved.

Description

technical field [0001] The invention relates to a fault indication device in a distribution cable network of a power system, in particular to an intelligent cable short-circuit grounding and temperature fault indicator applied to a 6-35 kV AC power distribution system. Background technique [0002] In the distribution network of the power system, such as the urban ring network, if a short circuit or ground fault occurs in a branch circuit of a certain level of distribution network, the relay protection system of the upper level must be disconnected within a certain period of time. After the breaking protection process occurs, it will cause all branch circuits belonging to this level of network to be powered off. Therefore hope to have a kind of indicating device to be able to locate the cable fault section accurately in time after power failure, so that shorten fault finding time, shorten power failure time, improve work efficiency. [0003] However, the current distributi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02G01R31/08
Inventor 张超胡华贾铁柱王峰赵丽萍
Owner STATE GRID CORP OF CHINA
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