Online diagnosis system and method for high-voltage electrical equipment
A technology of high-voltage electrical equipment and diagnostic systems, which is applied in the direction of testing dielectric strength, etc., can solve the problems of inability to monitor the health status of equipment in real time, insulation protection can not be realized, etc., to achieve remote diagnosis and predictive maintenance of insulation performance, insulation status can be known controllable effect
Pending Publication Date: 2022-02-11
CNNC NUCLEAR POWER OPERATION MANAGEMENT +1
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Problems solved by technology
[0003] Based on this, it is necessary to provide an online diagnosis system and method for high-voltage electrical equipment for the problems that the insulation protection of the existing online high-voltage electrical equipment cannot realize sensitive and effective insulation detection and the offline test cannot monitor the health status of the equipment in real time. Method for sensitive and effective insulation detection and real-time monitoring of equipment health status
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[0033] The invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0034] See figure 1 However, the insulating material in which the insulating material in the high voltage electrical equipment is present, and since the insulation strength of the air is lower than the vacuum, the air bubble is first broken as the voltage is raised, resulting in the internal discharge of the high voltage electrical equipment. As the insulating material is stimulated by various aging factors, the insulation strength will gradually decrease, and the discharge site will gradually expand, and finally developed into an insulating breakdown. Therefore, it is early to monitor local discharge and discharge position in high-voltage electrical equipment, and timely repair and process, thereby avoiding incidents. But when discharge is started, the amount of discharge is small, it is difficult to measure and position.
[0035] In actual produc...
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The invention particularly relates to an online diagnosis system and method for high-voltage electrical equipment. The online diagnosis system comprises a signal acquisition system, a signal processing system and a signal evaluation system, wherein the signal acquisition system is used for acquiring partial discharge signals of the high-voltage electrical equipment in real time and forming a signal packet file; the signal processing system is used for identifying, reading and processing a fault characteristic signal file in the signal packet file to form a data file; and the signal evaluation system is used for further analyzing and calculating the data file to obtain a partial discharge parameter of the high-voltage electrical equipment, comparing the partial discharge parameter of the high-voltage electrical equipment with a historical partial discharge parameter of the high-voltage electrical equipment, judging the health state of the insulation performance of the high-voltage electrical equipment, and obtaining an evaluation result. According to the online diagnosis system and method for the high-voltage electrical equipment, sensitive and effective insulation detection is realized, and the health state of the equipment is monitored in real time.
Description
Technical field [0001] The present invention relates to the field of high voltage electrical insulation performance operation and maintenance techniques, and more particularly to a high-voltage electrical equipment online diagnostic system and method. Background technique [0002] The insulation material of high-voltage electrical equipment is due to electrical aging, thermal aging, mechanical aging, and environmental aging, and ultimately breakdown, it is not timely handling will be developed into short circuit faults, and severely damaged equipment, and even expand into malignity. accident. To this end, it has attracted high attention to electrical insulation in the industry. The conventional method is mainly detected primarily through the insulation performance test of high voltage electrical equipment. At present, mature applications are offline trials and tests, such as: insulation test, impaired test, DC withstand voltage test, AC withstand voltage test, offline discovery, ...
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IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 唐元琦尚宪和
Owner CNNC NUCLEAR POWER OPERATION MANAGEMENT