A Static Security Analysis Method for Cascading Overload Trips Considering Automatic Device Simulation

doi:10.11930/j.issn.1004-9649.2014.6.38.4

Abstract

Abstract: A static security analysis method for cascading overload trips was proposed, which is based on the post-contingency power flow to analyze the fault flow. If the power flow transferring causes overloads, the overload equipment has to be tripped and the power flow will be calculated again until overloads is eventually eliminated. However, if the fault causes serious consequences such as system islanding, transmission section overload, and power flow not converging, the analysis should be stopped. By evaluating the result of each overload trip, the fault path can be found, which can also help to take precautionary measures to prevent fault propagation. In addition, transmission section limitation analysis and automatic device simulation are taken into account in the calculation process to ensure the correctness of results. Finally, simulation analyses on Guangdong power grid verified the effectiveness and practicability of the proposed method.

Key words: cascading overload trip, automatic device simulation, static security analysis

CLC Number:

TM711

WANG Yi, ZHANG Xuan, DONG Yi-feng, WANG Hong-fu, HOU Jun-xian. A Static Security Analysis Method for Cascading Overload Trips Considering Automatic Device Simulation[J]. Electric Power, 2014, 47(6): 38-42.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.6.38.4

https://www.electricpower.com.cn/EN/Y2014/V47/I6/38

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