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Voltage sag caused by faults on an electric power transmission line is one of the most intractable power quality issues for both utility companies and customers. The fault in power system randomly exists along transmission lines due to the combination of many uncertain factors. To predict and assess the annual expected sag frequency (ESF) deriving from the faults along lines, a stochastic‐based method...
Fault location on transmission line influences the characteristics of voltage sag at given bus. It is difficult to determine the fault pattern and voltage sag frequency. A new method based on maximum entropy principle was proposed to assess sag frequency synthetically considered different fault types and objective probability distribution of fault location in the power system. The faulty line intervals...
The voltage sag in power system is determined by many factors. To calculate its frequency, a maximum entropy principle based stochastic method was proposed in this paper. This method considered synthetically different types of line faults. On the basis of fault line intervals setting and sample data moments, the distribution probability of line fault was extracted by maximizing the entropy and the...
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