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High-frequency unipolarity noninductive pulse discharge signal detecting method

A technology of pulse discharge and signal detection, applied in the direction of testing dielectric strength, etc., can solve the problems of not satisfying the local electric field balance, ionized substances are far away from thermodynamic equilibrium, etc., and achieve the effect of high accuracy and convenient use.

Inactive Publication Date: 2014-11-26
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology

The research work on streamers has always attracted the attention of scholars, and it is also a research difficulty. The main reason is that the ionized substances formed during the streamer discharge process are far from thermodynamic equilibrium, and sometimes even do not satisfy the local electric field equilibrium.

Method used

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  • High-frequency unipolarity noninductive pulse discharge signal detecting method

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0031] The main problems to be solved by the detection unit for the gas pre-discharge current test under the action of the impulse voltage are, first, the flow capacity of the detection unit, and second, to minimize the inductance of the detection unit. Such as figure 1 Shown is the schematic diagram of the principle of the high-frequency unipolar non-inductive pulse discharge signal detection method of the present invention, comprising the following steps:

[0032] 1) Fill the needle plate electrode with impulse voltage and use a voltage divider to collect the impulse voltage signal...

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Abstract

The invention relates to a high-frequency unipolarity noninductive pulse discharge signal detecting method. The high-frequency unipolarity noninductive pulse discharge signal detecting method comprises the steps that needle plate electrodes are charged with surge voltage, and a voltage divider is used for collecting surge voltage signals; a current detecting unit collects current signals on the needle plate electrodes in a set sampling period; a photomultiplier observes optical signals produced during interval streamer discharge among the needle plate electrodes; the voltage divider, the current detecting unit and the photomultiplier transmit the detected signals to an oscilloscope. Compared with the prior art, the high-frequency unipolarity noninductive pulse discharge signal detecting method has the advantages of being high in precision, high in reliability and the like.

Description

technical field [0001] The invention relates to a discharge signal detection technology, in particular to a high-frequency unipolar non-inductive pulse discharge signal detection method. Background technique [0002] In power systems, gas is a widely used insulating material. Such as overhead transmission lines, busbars, and the fracture of isolating switches are all completely dependent on air as insulation. Others do not rely entirely on air for insulation, but air surrounds them and forms part of the insulation. SF 6 Gas has only been discovered for more than 100 years. Its wide application as a high-voltage insulating material has promoted the rapid development of power transmission and transformation technology and high-voltage insulation technology. With the continuous improvement of people's understanding of the discharge process, new discoveries have been made in its research. [0003] Since the discovery of electrons in 1858, the research on gas discharge has ne...

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Application Information

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IPC IPC(8): G01R31/12
Inventor 吴家华盛连军孙都金胤豪曹斌施会茅晓亮李峰陆如
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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