±800kV直流输电线路边界保护的模型匹配时域算法

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Abstract The DC transmission line internal fault and external fault model are established by reasonable simplification based on electrical Characteristics of fault induce component for ± 800kV DC (UHVDC) transmission system. The smoothing inductor model is used for the base line mode, and the measured line voltage and current is used to match inductor model, which can identify the external fault and internal fault. If the fault occurs at the internal of line protection, line both sides of the measured voltage and current meet the smoothing reactor voltage and current relationship(VCR).The measured voltage and current is matched with the smoothing inductor model and the model error is small. If the fault occurs at the external of line protection, the measured voltage and current at fault side don’t meet the smoothing reactor voltage and current relationship(VCR).The measured voltage and current match with the smoothing inductor model and the model error is large. A large number of digital tests show that the model matching algorithm in time-domain is used to construct UHVDC line boundary protection method is correct and reliable.

Key words： UHVDC transmission line boundary protection fault-induced transient component model matching model error

Received: 08 June 2011 Published: 25 March 2014

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TM773

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	Articles by authors
	Shu Hongchun
	Tian Xincui
	Dong Jun
	Zhang Guangbin
	Liu Kezhen
	Sun Shiyun
	Yang Yi

Cite this article:

Shu Hongchun,Tian Xincui,Dong Jun等. ± 800kV DC Transmission Line Boundary Protection Using Model Matching Algorithms in Time-Domain[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 320-327.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I10/320

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作者简介:束洪春男, 1961年生, 博士, 教授, 博士生导师, 从事电力系统新型继电保护与故障测距、故障录波、数字信号处理及DSP应用等方面的教研工作。田鑫萃女, 1986年生, 博士研究生, 研究方向为新型继电保护与故障测距。