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| Analysis and suggestions on open line test of converter station |
| YAN Kaige, LIU Tao, AI Songbo, ZHAN Tianle |
| EHV Branch of State Grid Jiangxi Electric Power Co., Ltd, Nanchang 330000 |
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Abstract This paper introduces the function and principle of DC transmission open line test, and studies the influence of trigger angle and resistance-capacitance parameter on open line voltage. Because the open line test voltage protection configured by the DC system is based on the ideal model calculation, which is quite different from the measured voltage, it is not actually put into operation. In this paper, a strategy to replace the old voltage protection is proposed, the resistance-capacitance value is calculated according to the measured voltage to predict whether the test can succeed, and avoid further reducing the triggering angle to cause breakdown and equipment damage.
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Received: 29 December 2022
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2023, Vol. 24 
