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Detection method for corona discharge detection device

A corona discharge and detection device technology, applied in the direction of testing dielectric strength, etc., can solve problems such as danger

Active Publication Date: 2016-02-03
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

Especially for equipment with high voltage power supply, if corona discharge occurs, it may bring potential danger

Method used

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  • Detection method for corona discharge detection device
  • Detection method for corona discharge detection device

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0026] An important situation where corona discharge occurs is during the transmission of high voltage power lines. Since the electric field strength on the transmission line does not reach very high, corona discharge will only occur in a small area, that is, the corona zone. Moreover, the corona discharge signal radiation signal will suffer energy loss during transmission. Therefore, if the corona discharge radiation signal is to be detected, the corona dischar...

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Abstract

The invention discloses a detection method for a corona discharge detection device. The method comprises steps that, reception signals are filtered in multiple different frequency band scopes; for each path of signals of multi-path signals, reception signal strength indication is carried out, signal envelope demodulation is specifically carried out, signals after envelope demodulation are classified into first signals and second signals, when strength of the first signals is greater than a threshold, the second signals are acquired and marked, characteristics of the second signals are analyzed; when characteristics of the second signals of the multi-path signals are consistent with set conditions, corona discharge appearance is determined. Through the method, high-efficiency high-sensitivity detection on the corona discharge can be realized on a relatively wide frequency band.

Description

technical field [0001] The invention relates to the field of self-sustained discharge detection, in particular to a detection method for a corona discharge detection device. Background technique [0002] Corona discharge is a partial self-sustained discharge phenomenon of a gas in an extremely uneven electric field. That is, in the absence of an external power source, the current of the ionized gas is formed only by the inhomogeneous electric field formed by the outside world. For example, when a pointed object in the air is charged, a very uneven electric field will be formed around it. When the field strength reaches a certain value, the gas around the pointed object will be ionized and excited, resulting in a corona discharge phenomenon. [0003] In recent years, with the continuous acceleration of my country's economic development and the rapid increase in power supply demand, the development of ultra-high voltage transmission has become an inevitable trend. At the sa...

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Application Information

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IPC IPC(8): G01R31/12
Inventor 高洁
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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