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High-voltage direct current transmission line corona loss measurement system

A measurement system and transmission line technology, applied in the direction of electric power measurement through current/voltage, measurement using digital measurement technology, etc., can solve the problems of little research significance and low sampling rate of the measurement system, and achieve accurate and strong measurement results The effect of anti-electrical breakdown performance and long-term stable operation

Inactive Publication Date: 2015-06-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, on the one hand, the system is only used in UHV AC systems, not suitable for UHV DC transmission lines; on the other hand, due to the low sampling rate of the measurement system, the audible noise and radio interference caused by corona are caused by pulse current Generated, basically in the high frequency band, so the system has little significance for the research of the source effect caused by the corona pulse current

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  • High-voltage direct current transmission line corona loss measurement system
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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0050] Such as figure 1 As shown, the present invention provides a high-voltage direct current transmission line corona loss measurement system, including a corona current measurement unit, a high voltage measurement unit and a corona loss comprehensive processing unit;

[0051] The corona current measurement unit adopts a distributed structure, and the input side of the corona current measurement unit is set on the high-voltage direct current transmission l...

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Abstract

The invention discloses a high-voltage direct current transmission line corona loss measurement system. The high-voltage direct current transmission line corona loss measurement system comprises a corona current measurement system, a high voltage measurement system and a comprehensive corona loss processing unit; the comprehensive corona loss processing unit receives, calculates and processes the corona current value measured by the corona current measurement system and the voltage value measured by the high voltage measurement system and calculates the corona loss data. Compared with the prior art, the corona current measurement system of the high-voltage direct current transmission line corona loss measurement system uses split type structure, and the field installation and repairing are simplified; the high-voltage direct current transmission line corona loss measurement system is suitable for a super / extra-high voltage direct current transmission line, and the measurement system is precise in measurement result, strong in anti-electric shock performance, effective and easy to use; the high-voltage direct current transmission line corona loss measurement system is capable of stably running under an extra-high voltage direct current environment and different severe natural environment for a long time; the high-voltage direct current transmission line corona loss measurement system provides an effective and reliable technological way for deeply researching the high-voltage direct current transmission line corona loss.

Description

technical field [0001] The invention relates to a corona loss measurement system, in particular to a corona loss measurement system for a high-voltage direct current transmission line. Background technique [0002] In order to implement the national energy policy and ensure the comprehensive, coordinated, sustainable and healthy development of the power industry, the State Grid Corporation of my country has proposed a major strategic measure to accelerate the development of AC and DC UHV power grids according to China's national conditions. UHV transmission is developed on the basis of ultra-high voltage transmission, which can realize long-distance and large-capacity transmission of electric energy, and is suitable for the interconnection of large-scale power grids. Unlike UHV AC transmission, UHV DC transmission lines have lower cost and lower power loss, and are more suitable for ultra-long-distance large-capacity power transmission. [0003] Among them, the research on ...

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Application Information

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IPC IPC(8): G01R19/25G01R21/06
Inventor 刘元庆吕建勋袁海文陆家榆辛恩承刘鸿宇吴桂芳鞠勇
Owner STATE GRID CORP OF CHINA
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