节点电压方程的任意时刻短路电流实用计算研究

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Abstract For the situation of the traditional operational curve method to calculate theinstantaneous short circuit current effective value is not accurate enough, a practical computerizedmethod making use of node admittance matrix based on the International Electrotechnical CommissionStandards and circuit theory is proposed to calculate the instantaneous short circuit current with highaccuracy and little user effort. A combination of two kinds of node voltage equation are used tosimplified calculation and can automatically calculate the periodic components of varying short circuitcurrent at anytime, and the aperiodic components of the symmetric short circuit current. The validity ofthe method with the example of Iran RUDBAR hydropower station is proved.

Key words： International Electrotechnical Commission Standards node voltage equation decliningperiodic components aperiodic components instantaneous short-circuit current

Received: 26 June 2014 Published: 25 July 2013

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	Articles by authors
	Li Yu
	Sun Chunshun
	Yang Yuwei
	Li Xing
	Ge Yuxuan

Cite this article:

Li Yu,Sun Chunshun,Yang Yuwei等. Computation for Instantaneous Short Circuit Current Based on IEC Standards and Node Voltage Equation[J]. Electrical Engineering, 2013, 14(04): 6-10.

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http://dqjs.cesmedia.cn/EN/Y2013/V14/I04/6

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作者简介:张贞(1987-) 男, 硕士研究生, 研究方向为电力系统运行与控制。