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Ring main unit fault detection system

A technology for fault detection and ring network cabinets, which is applied in the directions of measuring electricity, measuring devices, measuring heat, etc., can solve the problems that the faults of the cable terminal joints of the ring network cabinet cannot be detected in real time, and achieve the effect of ensuring normal operation

Active Publication Date: 2021-12-31
STATE GRID JIANGSU ELECTRIC POWER CO LTD SUQIAN POWER SUPPLY BRANCH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A ring network cabinet fault detection system proposed by the present invention aims to solve the problem that the existing technology cannot detect the fault of the cable terminal joint of the ring network cabinet in real time

Method used

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Embodiment

[0064] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0065] Such as figure 1 As shown, a ring main unit fault monitoring system includes a partial discharge monitoring system, a wireless temperature measurement system, and a fault analysis system.

[0066] The partial discharge monitoring system includes several partial discharge monitoring devices and a partial discharge information collection device.

[0067] Such as figure 2 As shown, the partial discharge monitoring device includes a signal input interface, a signal conditioning circuit, AD sampling, a CPU, a power control circuit, and a communication control circuit.

[0068] The signal input interface generally adopts BNC interface or SMA interface, which has a good transmission effect and noise shielding effect on high-frequency partial discharge signals; the signal conditioning circuit includes two parts: signal amplification and signal detectio...

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Abstract

The invention provides a ring main unit fault detection system which comprises a partial discharge monitoring system, a temperature measurement system and a fault analysis system. The partial discharge monitoring system comprises a partial discharge monitoring device and a partial discharge information collecting device, the temperature measurement system comprises a temperature sensor and a temperature collecting device, the partial discharge monitoring device is connected with the partial discharge information collecting device, and the temperature sensor is connected with the temperature collecting device. And the partial discharge information collecting device and the temperature collecting device are respectively in communication connection with the fault analysis system. The system has the advantages that 1) the system has a ring main unit partial discharge detection function and a temperature detection function, and fault diagnosis can be carried out on the ring main unit by adopting a fault comprehensive evaluation method; and 2) online monitoring can be carried out on the ring main unit, the running state of the ring main unit is monitored in real time, potential faults and defects are found, and normal running of electrical equipment is guaranteed.

Description

technical field [0001] The invention relates to a ring network cabinet fault detection system, which belongs to the technical field of online monitoring and fault diagnosis of electric equipment. Background technique [0002] In recent years, the cable construction of the urban power grid has been continuously promoted, and a large number of overhead lines have been canceled and transformed into cables buried underground, saving power transmission corridors and beautifying the city's appearance; at the same time, the use of ring network cabinets used with cables In order to ensure safety when the ring network cabinet is running with electricity, the door must be closed, and the operating status of its internal switches, busbars, cables, cable connectors and other components cannot be directly observed and detected from outside the cabinet, which makes it difficult for inspection personnel to intuitively Inspection and maintenance of them, and the large number of ring network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/00G01K13/00
CPCG01R31/1227G01R31/00G01K13/00
Inventor 邱冬刘刚王秀茹韩少华张圆明徐庆仝进陈莎石聪聪韩雪琳
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD SUQIAN POWER SUPPLY BRANCH
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