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首页> 外文会议>2000 International Conference on Power System Technology >TESTS ON THE FIRST 500kV COMPACT TRANSMISSION LINE IN CHINA
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TESTS ON THE FIRST 500kV COMPACT TRANSMISSION LINE IN CHINA

机译：中国第一条500kV紧凑型输电线路的测试

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The paper deals with the tests on the first 500kV compact transmission line in China. The transmission line is located in north China power network. It is from Fangshan substation to Changping substation nearby Beijing . The transmission distance of the line is 83 km. In order to investigate the characteristics of the transmission line, many tests were performed on the line before and after its operation. The electrical parameters including the positive sequence and zero sequence impedance were measured before operation. The results are the same as the designed ones. The electrical field nearby the transmission line when it is energized is not higher than the conventional transmission line. As compared with the conventional transmission line, the insulation distance of the compact transmission line is considerably short; the switching surges of phase to earth and phase to phase were investigated carefully during switching operation. Different operation modes of the breaker are considered. The phase to earth overvoltage is less than 1.79p.u. The phase to phase overvoltage is not greater than 3.45 p.u. The voltage and current unbalance between the phases of the transmission line is very small when it is energized. The audible noise and radio interference is not higher than designed one. The transmission line was put into operation in the end of last year.
机译：本文涉及中国第一条500kV紧凑型输电线路的测试。传输线位于华北电网。从房山变电站到北京附近的昌平变电站。线路的传输距离为83公里。为了研究传输线的特性，在运行之前和之后对传输线进行了许多测试。在操作前测量包括正序和零序阻抗在内的电参数。结果与设计的结果相同。通电时，传输线附近的电场不高于常规传输线。与传统的传输线相比，紧凑型传输线的绝缘距离相当短。在切换操作过程中，仔细研究了相间和相间的切换浪涌。考虑了断路器的不同操作模式。相间过电压小于1.79p.u。相间过电压不大于3.45p.u。通电时，传输线各相之间的电压和电流不平衡很小。可闻噪声和无线电干扰不高于设计值。该传输线已于去年年底投入运营。

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