Power cable fault secondary flashover detection device
A secondary flashover and detection device technology, applied in the direction of testing dielectric strength, etc., can solve various problems in cables and other problems
Active Publication Date: 2016-01-13
XIAN XU&HUI ELECTROMECHANICAL TECH CO LTD
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Problems solved by technology
Due to the vicious competition in the market, it is inevitable that there will be various problems in the quality of the cable; in addition, the phenomenon of overload operation is particularly serious in reality
Method used
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Embodiment Construction
[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0023] refer to figure 1 , The power cable fault secondary flashover detection device of the present invention includes two parts: a high-voltage pulse generator and a secondary flashover cable fault tester. Among them, the high-voltage output unit of the high-voltage pulse generator is connected to the fault of the fault cable through the high-voltage pulse output line 1; the ground terminal is connected to the ground wire of the fault cable through the cable ground wire 2; Safely connected to the earth. The input unit of the secondary flashover cable fault tester is connected to the secondary flashover acquisition unit of the high-voltage pulse generator through the sampling line 3, thereby changing the complicated wiring of traditional cable faults and reducing accidents caused by wrong wiring.
[0024] The high-voltage pulse ge...
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The invention discloses a power cable fault secondary flashover detection device which is formed by a high-voltage pulse generator and a secondary flashover cable fault tester. The power cable fault secondary flashover detection device is characterized in that the high-voltage pulse generator comprises a high-frequency power supply, a pulse output unit, a secondary flashover acquisition unit and an automatic discharge unit, wherein the output of the pulse output unit is connected with the cable fault; the secondary flashover acquisition unit is used for collecting fault waveforms and transmitting the collected fault waveforms to the secondary flashover cable fault tester through an acquisition line; the high-frequency power supply generates 15 kHz high-frequency voltage, and converts the high-frequency voltage into a DChigh voltage for providing power for a high-voltage energy storage unit, and then, the pulse output unit transmits high-voltage pulse signals for the fault cable; and the automatic discharge unit is used for carrying out discharging processing on the fault cable and the high-voltage energy storage unit after the test is finished.
Description
technical field [0001] The invention relates to power cable fault detection technology, in particular to a detection device for ultra-high voltage and ultra-high voltage cable faults. Background technique [0002] With the rapid development of society, the development of power grid is beyond our expectation. The voltage level has developed from high voltage to ultra-high voltage and ultra-high voltage, and from AC transmission to DC transmission. Coupled with the improvement of people's living standards and the upgrading of environmental requirements, all transmission lines in the city will be changed from overhead lines to underground power cables. This not only makes the number of power cables increase by leaps and bounds, but also causes great changes in the voltage level of power cables: 500V and above are collectively referred to as high voltage, and below 500V are collectively referred to as low voltage; according to the power supply system, low voltage below 1000V, a...
Claims
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Inventor 张振存
Owner XIAN XU&HUI ELECTROMECHANICAL TECH CO LTD