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《AUTOMATION OF ELECTRIC POWER SYSTEMS》 2000-22
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INTEGRATION OF FUZZY SET THEORY AND TAYLOR SERIESEXPANSIONS FOR CONTINGENCY SCREENING OF TRANSIENT STABILITY ASSESSMENT

LuZhilai,Zhang Baohui,H a H engxu Xi'an Jiaotong University,Xi'an71 0 0 4 9,China  
For avoiding missing of reporting insecure cases,this paper integrates fuzzy set theory with Taylor series expansions techniques,and presents an efficient method for contingency screening of dynamic security assessment.In the proposed method,seven performance indices reflecting the severity degree of contingencies are defined.Fuzzy set theory is employed to assess transient stability of power systems.The Taylor series expansions are used to produce the input attributes.The fuzzy set theory can derive a continuous- spread stability index to indicate the relative stability degree by means of a fuzzy membership function.It provides three pieces of cincture based on the stability index,i.e.absolute stable cincture,absolute unstable cincture and fuzzy cincture.Fast contingency screening can be realized by the three pieces of cincture.The simulation results show the excellent performance of the proposed method.
【Fund】: 高等学校博士学科点专项科研基金资助课题! (RFDP-980 6981 4)
【CateGory Index】: TM711
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