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《Electric Power Automation Equipment》 2015-10
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Quantitative assessment index and method of transient voltage stability

HOU Jianlan;LIU Yuquan;XIE Xiaorong;YE Meng;SUN Yingyun;WANG Ke;ZHANG Yao;State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources ,North China Electric Power University;School of Electric Power,South China University of Technology;Guangzhou Power Supply Bureau;State Key Lab of Control and Simulation of Power System and Generation Equipments ,Department of Electrical Engineering,Tsinghua University;  
Since the transient voltage stability presents great challenge to the safe and stable operation of system,it is of great significance to research the quantitative assessment method for the transient voltage stability of actual system. The voltage sag indexes,including the voltage sag severity index and the voltage sag eligibility index,are proposed based on the transient voltage stability criteria stipulated in electric power industry standard for large disturbance conditions. Classified into single-fault one-node voltage sag index,multi-fault one-node voltage sag index and system voltage sag index,they are applied to assess the transient voltage stability of any node or whole system for actual power grid. Case analysis adopts the data planned for 2016' Guangzhou Power Grid and applies the PSD-BPA time domain simulation. The simulative results show the impacts of fault type and load model on the transient voltage stability,as well as the intuition and effectiveness of the proposed indexes in the quantitative assessment of transient voltage stability for actual system.
【Fund】: 国家高技术研究发展计划(863计划)项目(2012AA-050216)~~
【CateGory Index】: TM712
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