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Consider the probability of random failure trend slip

Author: YuanYuDong
Tutor: DongLei
School: North China Electric Power University (Beijing)
Course: Proceedings of the
Keywords: Probability trend Semi- invariant Slip random failure Gram-Charlier series
CLC: TM732
Type: Master's thesis
Year: 2008
Downloads: 272
Quote: 3
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Abstract


Power system safe and stable operation of the power system planning , analysis, operation and control of the important issues that must be considered . Flow calculation is in power system planning, analysis and control of the foundation. Power system analysis has long been established on the basis of deterministic flow calculation , but in the actual operation of the network , the system parameters, such as bus load , etc. are indeterminate value. In this context, analysis of power system load flow calculation if the deterministic method, it requires a number of possible scenarios for a number of scenarios , calculated time is difficult to bear and difficult to reflect the status of the overall system . This paper presents a new considerations in case of line failure probability flow algorithm . The method is based on the total probability theory, probabilistic methods described in line with random failures caused by random variation network , to get the probability of occurrence of different network structures . Using linear AC power flow equations , combined with semi- invariants and Gram-Charlier series expansion of the unknown variables to obtain the probability density function (PDF) and cumulative distribution function (CDF). This is equivalent to the random failure of the line end node injection power line disturbance compensation method using disturbance injected power , to avoid double counting of admittance matrix . Using this algorithm IEEE14 node system was tested by comparing the computation time and the results prove the validity and correctness .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system scheduling, management, communication > The operation of the power system
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