一种新型的同塔双回输电线路工频阻抗参数测量方法

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摘要基于输电线路三相不平衡及感应电压干扰在短时间不变的前提,提出了一种新型的同塔双回输电线路工频阻抗参数测量方法。该方法采用单相电源多变换接入的方式对不对称线路进行分相解耦测量,通过建立数学模型、数据拟合和矩阵变换,从而获得单回或两回线路的序阻抗及各序之间的耦合阻抗。该方法克服了高感应电压及三相不平衡对线路参数测试的影响,具有简单、精确、稳定等特点,测试结果表明了本文方法的有效性。

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	赵艳军
	陈晓科
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	赵进全
	李贺龙
	姜良刚

关键词 ：同塔双回输电线路, 三相不平衡, 工频阻抗参数, 测量方法

Abstract：Based on the assumption of the three-phase AC impedance parameters unbalanced and the electromagnetic induction voltage invariant in a short time, a new measurement method of the power frequency impedance parameters of double-circuit transmission lines on same tower is proposed. The new measurement method applied a single-phase power frequency power connected to the transmission lines by different ways,and obtained the sequence impedances and sequence coupled impedances of single-circuit or double-circuit transmission lines by establishing the mathematics model,fitting the experimental data,transforming the matrix. This method overcomes the influence of the induction voltage and three-phase unbalanced problem, and it is simple, accurate and stable etc. The measurement results show the validity of this method.

Key words： Double-circuit transmission lines on same tower three-phase AC impedance parameters unbalanced the power frequency impedance parameters measurement method

收稿日期: 2013-08-23 出版日期: 2015-04-14

PACS:

TM711

作者简介: 赵艳军女,1987年生,硕士,工程师,主要从事电力系统分析与电网规划方面的研究。陈晓科男,1978年生,硕士,高级工程师,主要从事电力系统分析与电网规划方面的研。

引用本文:

赵艳军,陈晓科,尹建华,赵进全,李贺龙,姜良刚. 一种新型的同塔双回输电线路工频阻抗参数测量方法[J]. 电工技术学报, 2015, 30(2): 255-260. Zhao Yanjun,Chen Xiaoke,Yin Jianhua,Zhao Jinquan,Li Helong,Jiang Lianggang. A New Measurement Method of the Power Frequency Impedance Parameters of Double-Circuit Transmission Lines on Same Tower. Transactions of China Electrotechnical Society, 2015, 30(2): 255-260.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I2/255

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