Gas insulation-based DC high voltage measuring device

A DC high-voltage, measuring device technology, applied in the direction of measuring devices, measuring electrical variables, measuring current/voltage, etc., can solve the problems of easy leakage of insulating oil, damage to electrical equipment, and easy fires, etc., to improve the withstand voltage level And work reliability, small size, not easy to cause fire effect

Active Publication Date: 2010-05-26
XIAN HIGH VOLTAGE APP RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional DC high-voltage measuring device uses insulating oil medium as the insulating material, which is bulky and heavy. The insulating oil is easy to leak and pollute the environment. Accidents are likely to cause fires and even damage other electrical equipment.

Method used

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  • Gas insulation-based DC high voltage measuring device
  • Gas insulation-based DC high voltage measuring device
  • Gas insulation-based DC high voltage measuring device

Examples

Experimental program
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Embodiment Construction

[0022] refer to figure 1 , in the gas-insulated DC high-voltage measuring device of this embodiment, the voltage divider includes a high-voltage unit and a low-voltage unit, the high-voltage unit and the low-voltage unit are connected in series, and respectively lead out high-voltage terminals, medium-voltage terminals and low-voltage terminals, and the high-voltage terminals are used to connect the Voltage point, the low-voltage terminal is used for grounding, and the medium-voltage terminal is the voltage measurement output terminal.

[0023] The high-voltage unit is composed of four-level series-connected voltage-dividing modules, specifically: voltage-dividing resistor r 11 with the equalizing capacitor c 11 Parallel connection, as the first voltage divider module; voltage divider resistor r 12 with the equalizing capacitor c 12 Parallel connection, as the second voltage divider module; voltage divider resistor r 13 with the equalizing capacitor c 13 Parallel connecti...

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Abstract

The invention relates to the DC high voltage transmission test technology of a power system, and discloses a gas insulation-based DC high voltage measuring device, which comprises a high voltage unit, a low voltage unit, a base, and an insulated sleeve fixed on the base; the high voltage unit is connected in series with the low voltage unit, and a high voltage terminal, a medium voltage terminal and a low voltage terminal are respectively led out; the high voltage unit is arranged in the insulated sleeve which is sealed by upper and lower end covers and is filled with SF6 gas; the high voltage terminal is led out from the upper end cover, and the medium voltage terminal is led out from the lower end cover and is connected with the low voltage unit; the high voltage unit and the low voltage unit respectively consist of voltage divider modules which are connected in series, and the series of the voltage divider modules forming the high voltage unit is greater than that of the voltage divider modules forming the low voltage unit; and the voltage divider modules consist of voltage sharing capacitors and divider resistors which are connected in parallel.

Description

technical field [0001] The invention relates to a DC high-voltage transmission test technology of an electric power system, in particular to a gas-insulated DC high-voltage measurement device. Background technique [0002] HVDC transmission has the advantages of large transmission capacity, low transmission loss, less land use, and flexible control. It can directly send power to the load center point-to-point, high-power, and long-distance. In the HVDC power transmission system, the DC high-voltage measuring device is used to sense the DC voltage signal, which is used for the protection and power measurement of the HVDC transmission line. An important organizational part of the control protection system and the ground of the power metering system. The traditional DC high-voltage measuring device uses insulating oil medium as the insulating material, which is bulky and heavy, and the insulating oil is easy to leak and pollute the environment, and accidents are likely to caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R15/06G01R15/14G08C23/06
Inventor 任稳柱于永明李宁冯建华杨奖利
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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