Transformer partial discharge monitoring and positioning system and method adopting multiple composite sensors

A partial discharge monitoring and composite sensor technology, applied in signal transmission systems, non-electrical signal transmission systems, testing using acoustic measurement, etc., can solve problems such as inability to work, poor system anti-interference, large deviation between PD source positioning and actual position question

Pending Publication Date: 2020-06-12
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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Problems solved by technology

This monitoring system and its method use an external AE sensor: when the transformer is actually operating, there are external signal interference from the substation, AE signal attenuation caused by the transformer equipment casing, and the AE signal is in the transformer equipment material (insulating oil, st

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  • Transformer partial discharge monitoring and positioning system and method adopting multiple composite sensors
  • Transformer partial discharge monitoring and positioning system and method adopting multiple composite sensors
  • Transformer partial discharge monitoring and positioning system and method adopting multiple composite sensors

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0036] Such as image 3 As shown, a transformer partial discharge monitoring and positioning system using multiple composite sensors includes a composite sensor integrated with a piezoelectric AE sensor and a UHF electromagnetic wave sensor, a multi-channel different-frequency data synchronous acquisition device 4, other terminal cabinets 5, and a transmission Network 6, data server 7, application server 8 and user terminal 9, described composite sensor is...

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Abstract

The invention relates to a transformer partial discharge monitoring and positioning system and method adopting multiple composite sensors. The system comprises a piezoelectric AE sensor and UHF electromagnetic wave sensor integrated composite sensor, a multi-channel pilot frequency data synchronous acquisition device, a transmission network, a data server, an application server and a user terminal. The composite sensor is connected with the transmission network through the multi-channel pilot frequency data synchronous acquisition device, and the transmission network is respectively connectedwith the data server, the application server and the user terminal. Compared with the prior art, the problem that whether PD signals come from the interior of a transformer or not is judged only through a single-property signal source at present is solved.

Description

technical field [0001] The invention relates to a transformer partial discharge monitoring and positioning system and method, in particular to a transformer partial discharge monitoring and positioning system and method using multiple composite sensors. Background technique [0002] There are defects in transformer oil-paper insulation, and when partial discharge (Partial dishcarge, PD) occurs, electric pulses, electromagnetic radiation, ultrasonic waves, light, and some new products are generated, and physical and chemical reactions such as local overheating are caused. Therefore, in principle, if these phenomena can be detected, they can be used as indications of PD defects. The transformer positioning methods under the applied voltage that have been developed include electrical positioning, ultrasonic (AE) positioning, electromagnetic wave high frequency (UHF) positioning, optical positioning and thermal positioning. In addition to the applied voltage, if the PD is also ...

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Application Information

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IPC IPC(8): G01R31/12G08C23/06
CPCG01R31/12G01R31/1209G08C23/06
Inventor 司文荣张琪祁宋平傅晨钊朱征陆启宇黄兴德黄华陆志浩吴欣烨李卫彬施春波袁鹏
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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