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Device and method for calibrating valve direct current residual voltage parameter tester of zinc oxide arrester

A technology for calibrating devices and arresters, applied in measurement devices, instruments, measuring electrical variables, etc., can solve the problem of no special test device, etc., and achieve the effect of ensuring coverage and being convenient to carry.

Active Publication Date: 2012-01-18
XIAN HIGH VOLTAGE APP RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 3. The arrester parameter tester needs to be periodically calibrated, and there is currently no special test device

Method used

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  • Device and method for calibrating valve direct current residual voltage parameter tester of zinc oxide arrester
  • Device and method for calibrating valve direct current residual voltage parameter tester of zinc oxide arrester
  • Device and method for calibrating valve direct current residual voltage parameter tester of zinc oxide arrester

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Embodiment Construction

[0031] The present invention is described in further detail below in conjunction with accompanying drawing:

[0032] see figure 2 and image 3 As shown, a zinc oxide surge arrester valve plate DC residual voltage parameter tester calibration device of the present invention includes a standard resistance divider 20, a high-voltage connection line 1, a data processing and display unit 21 and a high-voltage interface.

[0033] see figure 2 As shown, the standard resistor divider 20 includes an epoxy resin insulating cylinder 6 and a base 7, the insulating cylinder 6 is fixed on the base 7, and the insulating cylinder 6 is provided with high-voltage arm resistors R connected in series. 1 , R 2 , R 3 , R 4 ,,,,,R n , high voltage arm resistance R 1 , R 2 , R 3 , R 4 ,,,,,R n Connect in series to form a high-voltage arm resistor string; high-voltage interface 2 is connected to the high-voltage arm resistor R 1 One end, the high voltage interface 3 is connected to the h...

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Abstract

The invention provides a device for calibrating a valve direct current residual voltage parameter tester of a zinc oxide arrester, which comprises a multi-input end standard resistor voltage divider and a current divider, wherein the standard resistor voltage divider comprises a high-voltage arm and a low-voltage arm, the high-voltage arm is formed by sequentially serially connecting a plurality of high-voltage resistors and has different resistance values according to different tested voltage values; the low-voltage arm is a low-voltage resistor which can be used as the current divider, the high-voltage arm is serially connected with the low-voltage arm, the other end of the low-voltage arm is connected with a grounding terminal; and two ends of the low-voltage arm are connected with an output terminal through a lead. An actual load of the parameter tester of the arrester can be simulated by adopting the standard resistor voltage divider, and meanwhile, measurement on output voltages and currents of the parameter tester of the arrester can be completed so that traceability can be conveniently carried out. The standard resistors are combined into a whole and then arranged in a fixed insulation sleeve, different loads have different high-voltage interfaces, a coverage range and a load current range during calibration are ensured, and all units are integrated together through a base and the sleeve as well as a high-voltage lead so as to be convenient for carrying and be neat.

Description

【Technical field】 [0001] The invention belongs to the technical field of high-voltage equipment testing, and relates to a calibration device in high-voltage testing equipment, in particular to a calibration device and a calibration method for a direct current residual voltage parameter tester of a zinc oxide surge arrester valve plate. 【Background technique】 [0002] Surge arrester is one of the important equipment in power system. Zinc oxide arrester (MOA) is a new type of arrester, which is used more and more in the power system, therefore, more and more attention is paid to the preventive test of MOA. The MOA preventive test project regulations include DC characteristic test and AC characteristic test, etc. MOA is widely used in the distribution network, and it is very difficult to test it with a DC high voltage generator. Zinc oxide surge arrester tester successfully solves the difficulties of outdoor field testing, and is an innovative product suitable for China's nat...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 任稳柱葛震郭小妍
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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