Power system cascading failure risk assessment method considering secondary system influence and system thereof

• Main Authors: WU QIANG, CAI CHAO, GAO SONG, FAN ANJIE, HUANG HE, HAN JUN, PAN WENJIE, WANG NA, CHEN HAOFEI, XIE ZHENJIAN
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2022
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention provides an electric power system cascading failure risk assessment method and system considering secondary system influence, and the method comprises the steps: firstly considering the power flow information of an electric power system, and building an electric power line fault probability model; secondly, considering the influence of the fault of the load shedding device in the power secondary system on the power primary system, and searching a complete event chain of the cascading fault of the power system based on a Markov chain method; and finally, based on a risk value theory, establishing a plurality of system-level risk indexes, and providing a system comprehensive risk index in combination with an analytic hierarchy process. The power system cascading failure risk assessment method considering the influence of the secondary system can comprehensively and reasonably assess the operation risk of the power system considering the secondary system. 本发明提供了计及二次系统影响的电力系统连锁故障风险评估方法及其系统，该方法首先考虑电力