System and method for measuring corona loss of high-voltage AC transmission line
A technology for high-voltage AC and transmission lines, which is applied in signal transmission systems, dielectric property measurement, non-electrical signal transmission systems, etc., and can solve the problem of insufficient synchronous acquisition schemes for corona current and voltage, and insufficient optimization of the corona current measurement system structure , Unable to cope with bad weather and other problems, achieve significant social and economic benefits, good electromagnetic shielding effect, and meet the effect of long-distance transmission
Active Publication Date: 2020-10-20
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology
[0007] 1. The structure of the existing corona current measurement system is not optimized enough to cope with severe outdoor weather, and it is prone to failure in extreme weather
[0008] 2. In the existing AC corona current measurement system, the synchronous acquisition scheme of corona current and voltage is not perfect, and the synchronization accuracy is not high
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[0057] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of this thorough and complete disclosure invention, and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings are not intended to limit the invention. In the drawings, the same elements / elements are given the same reference numerals.
[0058] Unless otherwise defined, terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is to be understood that terms defined in commonly used dictionaries should be construed as having meanings consistent with the context in the related art, and should not be construed as idealized or overly formal...
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The invention discloses a corona loss measurement system and method of a high-voltage alternating-current transmission line. The system comprises a high-voltage upper voltage measurement module, a resistance sensor, a high-voltage upper data acquisition module, a high-voltage lower photoelectric conversion module, a host computer and a power supply module. The high-voltage upper voltage measurement module is used for transmitting a measured high-voltage signal to the high-voltage upper data acquisition module. The resistance sensor is sued for measuring and transmitting a corona current signal to the high-voltage upper data acquisition module. The high-voltage upper data acquisition module synchronously acquires the high-voltage signal and the corona current signal in a synchronously acquiring mode through double channels, converting the two signals and then transmitting the converted signals to the high-voltage lower photoelectric conversion module. The high-voltage lower photoelectric conversion module converts the two converted signals into two electric signals through photoelectric conversion and then transmits the electric signals to the upper host for processing. The host computer receives the two electric signals transmitted by the high-voltage lower photoelectric conversion module and calculates corona loss. The power supply module adopts a storage battery set to supply power to ensure that the system can normally work.
Description
technical field [0001] The present invention relates to the field of metrology and calibration, and more particularly, to a system and method for measuring corona loss of high-voltage alternating current transmission lines. Background technique [0002] In order to implement the national energy policy and ensure the comprehensive, coordinated and sustainable development of the power industry, the State Grid Corporation of my country has put forward a major strategic measure to accelerate the development of AC and DC UHV power grids according to China's national conditions. UHV power transmission is developed on the basis of ultra-high voltage power transmission, which can realize long-distance and large-capacity transmission of electric energy, and is suitable for the interconnection of large-scale power grids. [0003] In the selection of UHV transmission mode, it is not simply to say which transmission mode is good or which is poor. Only by choosing according to specific c...
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IPC IPC(8): G01R27/26G01R19/00G01R15/22G01R15/14G08C23/06
CPCG01R15/142G01R15/22G01R19/00G01R27/26G01R27/2694G08C23/06
Inventor 刘元庆廖敏鹏袁海文吕建勋陆家榆赵录兴王国盈
Owner CHINA ELECTRIC POWER RES INST