Partial discharge online monitoring device for high-voltage switchgear cabinet insulator
A high-voltage switchgear and partial discharge technology, applied in the electrical field, can solve the problems of destructive breakdown of insulators, degradation of insulation characteristics, electrical faults, etc., and achieve the effect of ensuring safe operation and accurate monitoring of insulator discharge.
Pending Publication Date: 2019-02-26
HANGZHOU ELECTRIC EQUIP MFG +1
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Problems solved by technology
A single partial discharge cannot break down the insulator, but with the increase in the number of partial discharges, the insulation characteristics decrease, resulting in more frequent partial discharges, which eventually cause a large destructive breakdown of the insulator, causing various electrical faults
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[0020] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only to further illustrate the features and advantages of the present invention, rather than limiting the claims of the present invention.
[0021] The embodiment of the present invention provides an on-line partial discharge monitoring device for high-voltage switchgear insulators, such as figure 1 As shown, it includes feedthrough current transformer, signal conditioning unit, high-speed sampling unit, FPGA unit, microprocessor unit, display unit, ambient temperature sensor unit, communication interface unit, temperature measurement sensor unit, video surveillance unit, power supply unit .
[0022] Wherein, the feed-through current transformer, the signal conditioning unit, the high-speed sampling unit and the FPGA unit are sequentially coupled, and the FPGA un...
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The invention provides a partial discharge online monitoring device for a high-voltage switchgear cabinet insulator, comprising a straight-through current transformer, a signal conditioning unit, a high-speed sampling unit, an FPGA unit, a microprocessor unit, a display unit, an ambient temperature sensor unit, a communication interface unit, a temperature sensor unit, a video monitoring unit, anda power unit. The straight-through current transformer, the signal conditioning unit, the high-speed sampling unit, and the FPGA unit are coupled successively. The FPGA unit, the display unit, and the ambient temperature sensor unit, the communication interface unit, the temperature sensor unit and the video monitoring unit are coupled to the microprocessor unit. The power unit is coupled to theFPGA unit and the microprocessor unit and is used for power supply. The monitoring device of the invention integrates three kinds of monitoring data, and can monitor the partial discharge of the high-voltage switchgear cabinet insulator.
Description
technical field [0001] The invention relates to the field of electrical technology, in particular to a partial discharge monitoring device for high-voltage switchgear insulators. Background technique [0002] The country has strict requirements on the insulation characteristics of high-voltage electrical equipment, but due to the limitations of the production process or the material itself, there are always some defects such as impurities, spikes, air gaps, etc. inside the insulator. The strong electric field formed by the high voltage cannot be evenly distributed inside the insulator, and the electric field strength will be relatively stronger in the part where there are defects, which makes this part prone to discharge that only exists in this part, which is called partial discharge. A single partial discharge cannot break down the insulator, but with the increase in the number of partial discharges, the insulation properties decrease, resulting in more frequent partial di...
Claims
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Login to View More IPC IPC(8): G01R31/12G01K7/22
CPCG01K7/22G01R31/1245
Inventor 徐昱王坚俊刘伟浩尤敏许挺陈巧勇江奕军宋佳佳张金波
Owner HANGZHOU ELECTRIC EQUIP MFG