Broadband corona current measuring system used for direct current test line segment
A technology of current measurement and DC test, applied in measurement devices, measurement of electrical variables, signal transmission systems, etc., can solve the problem of not providing measurement and analysis of broadband DC corona current, etc., to improve anti-electromagnetic interference ability, easy to use, The effect of high measurement accuracy
Inactive Publication Date: 2012-10-10
CHINA ELECTRIC POWER RES INST
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However, this patent only provides a means to measure the corona current at the high-voltage end, and it does not provide a systematic and comprehensive measurement and analysis of the broadband DC corona current to obtain the analysis of corona characteristics and corona initiation. Feature ideas
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[0034] In order to better understand the present invention, the content of the present invention will be further clarified below in conjunction with the examples, but the content of the present invention is not limited to the following examples. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope of the claims listed in this application.
[0035] figure 1 Description marked in: 1.1- DC voltage generator; 1.2- resistance sampling unit; 1.3- upper computer acquisition unit; 1.4- test line segment; 1.5- wind speed sensor; 1.6- temperature and humidity sensor; 1.7- rain sensor; 1.8- resistance point Compressor; 1.9-lower computer acquisition unit.
[0036] figure 2 The description in the mark: 2.1-Upper computer 300Mbps wireless network card; 2.2-300Mbps wireless router; 2.3-Lower computer wireless network card, two wireless network cards form a local area network through the wireless router,...
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The invention provides a broadband corona current measuring system used for a direct current test line segment. The broadband corona current measuring system is characterized by comprising a high-speed synchronous acquiring module and a high-speed wireless transmission network, wherein the high-speed synchronous acquisition module comprises a resistance sampling unit, an upper computer acquisition unit, a resistance voltage divider and a lower computer acquisition unit; the upper computer acquisition unit comprises a high-speed data acquisition card, a power supply module and a GPS (Global Positioning System) synchronous clock; the lower computer acquisition unit comprises a high-speed data acquisition card, a power supply module and a GPS synchronous clock; the resistance sampling unit and the high-speed data acquisition card of the upper computer acquisition unit are connected by a coaxial cable, and the resistance voltage divider and the lower computer acquisition unit are connected by a coaxial cable; and the upper computer acquisition unit and the lower computer acquisition unit are connected by a wireless network. According to the measuring system, the measurement accuracy is high, the insulation problem does not exist, the operation is convenient, and the potential safety hazard does not exist.
Description
Technical field [0001] The invention belongs to the field of high-voltage measurement, and relates to a DC corona current measuring device, in particular to a test line corona current measuring device. It is suitable for tests aimed at analyzing various frequency components of corona current under various voltages. For the analysis of corona characteristics and corona initiation characteristics. Background technique [0002] When the electric field strength around the wires of the transmission line exceeds the air breakdown field strength, the air near the wires will be ionized to form corona discharge. The corona discharge will produce audible noise, radio interference and corona loss, which will cause certain damage to the environment and operation. Impact. Considering many factors such as construction and operation costs and environmental protection, reasonable design of wires and moderate control of corona effect are very important for the development of UHV transmission. T...
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IPC IPC(8): G01R19/00G08C17/02H04W84/12
CPCY02B60/50Y02D30/70
Inventor 刘云鹏谢雄杰朱雷霍锋周国杨李玥翰
Owner CHINA ELECTRIC POWER RES INST