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Intelligent SF6 gas integrated detection system and detection method

A detection system, SF6 technology, applied in neural learning methods, measuring devices, instruments, etc., can solve problems such as frequent air leakage and partial discharge, and achieve the effect of easy real-time grasp, strong control, and convenient operation

Pending Publication Date: 2022-04-12
STATE GRID SHANDONG ELECTRIC POWER COMPANY WEIFANG POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on solving the two most common problems of combined electrical appliances, frequent air leakage and partial discharge, the present invention builds a combined electrical appliance "life support system"-smart SF 6 The integrated device of automatic gas replenishment, component analysis and partial discharge detection has completed the intelligent real-time online detection of the state of the combined electrical appliance and the timely diagnosis and treatment of faults, realized the remote automatic gas replenishment function, and regularly checked the Moisture and SF in air chamber 6 The gas composition is detected and analyzed, and the effect is remarkable

Method used

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  • Intelligent SF6 gas integrated detection system and detection method

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Embodiment 1

[0035] Such as figure 1 As shown, the smart SF of the present invention 6 Gas integrated detection system, including detection gas-filled layer 1, PD detection layer 2 connected to detection gas-filled layer 1, and comprehensive diagnosis layer 3 capable of remote communication with PD detection layer 2, detecting gas-filled layer 1 and PD detection layer 2 They are all set in the air chamber of the combined electric appliance, and the detection air-filled layer 1 includes SF 6 Sensor, SF 6 Automatically detect the inflatable device and the solenoid valve, which are used to detect the SF of the air chamber in real time respectively 6 Leakage gas concentration, judge SF 6 leak rate and control solenoid valve, receive SF 6 Inflation of the gas station; partial discharge detection layer 2 includes real-time reception and processing of the gas chamber SF 6 Gas micro-water detection unit, combined analysis unit, and UHF local detection unit that receives and processes gas cham...

Embodiment 2

[0047] On January 12, 2021, in a 220kV substation of 220kV Yizheng II Line 214, the explosion-proof membrane of the air chamber ruptured, causing serious gas leakage. Thanks to Combined Appliances "Life Support System" - Smart SF 6 The integrated device of automatic gas replenishment, component analysis and partial discharge detection effectively maintains a 220kV II-line combined electrical appliance running smoothly for 90 hours, avoids the occurrence of unplanned power outages, ensures the safety of equipment, and effectively resolves the problem caused by scheduling Operation mode and lack of spare parts and other practical reasons cannot be dealt with immediately by power outage.

Embodiment 3

[0049] On December 30, 2020, a combined electrical appliance "life support system" installed in a 110kV GIS room of a 110kV substation - Smart SF 6 The integrated device of automatic gas replenishment, component analysis and partial discharge detection alarms, and a discharge signal and gas decomposition products exceeding the standard are detected inside a 110kV 111-1 knife gate gas chamber. After on-site inspection, it was found that the internal connecting rod of the 111-1 knife switch fell off, and the opening of phase A and C of the knife switch was not in place.

[0050] The present invention can also realize following benefit:

[0051] Safety benefits: During the application period of the system, the 220kV Yizheng II line combined electrical appliances have been effectively maintained for 90 hours, avoiding the occurrence of unplanned power outages caused by abnormal development of equipment, and resolving practical reasons such as dispatching operation mode and insuffi...

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Abstract

The invention relates to an intelligent SF6 gas integrated detection system and a detection method, and belongs to the technical field of electric power detection. The system comprises a detection inflation layer, a partial discharge detection layer connected with the detection inflation layer and a comprehensive diagnosis layer capable of remotely communicating with the partial discharge detection layer, the detection inflation layer and the partial discharge detection layer are both arranged in a gas chamber of the composite apparatus, and the detection inflation layer comprises an SF6 sensor, an SF6 automatic detection inflation device and an electromagnetic valve; the partial discharge detection layer comprises a micro-water detection unit for receiving and treating SF6 gas in the gas chamber in real time, a combined analysis unit and an ultrahigh-frequency local detection unit for receiving and treating a combined electric appliance in the gas chamber in real time; the comprehensive diagnosis layer comprises a comprehensive diagnosis system used for receiving detection information of the micro-water detection unit, the combined analysis unit and the ultrahigh frequency local detection unit. According to the invention, the original inflation mode of equipment is changed, the online detection capability of health data of the combined electric appliance is improved, and a basis is provided for equipment abnormity handling and emergency monitoring.

Description

technical field [0001] The invention relates to an intelligent SF 6 The gas integrated detection system and detection method belong to the technical field of electric power detection. Background technique [0002] In recent years, combined electrical appliances have been put into use in large quantities due to their compact structure, reliable operation, long maintenance cycle and many other advantages, and their number in power grid equipment has also ushered in explosive growth. However, its disadvantages have gradually emerged during the long-term operation: (1) Air leakage phenomenon of the equipment: the SF in the air chamber of the combined electrical appliance 6 The air pressure is high, and air leakage often occurs at the shell butt joints, welds, and flange connections, especially in extremely cold operating conditions; (2) There are many hidden dangers of equipment discharge: During the long-term operation of electrical appliances, partial discharge problems ofte...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01D21/02G06N3/04G06N3/08
Inventor 颜廷鑫李楠陈玉航肖英俊蒋凯于延涛张晓孙希盈申鹏飞邱金海孙义法
Owner STATE GRID SHANDONG ELECTRIC POWER COMPANY WEIFANG POWER SUPPLY
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