Reliability Assessment of Distribution Networks with Distributed Generators Based on Credibility Theory
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Abstract
The reliability of distribution system including distributed generation (DG) need to be analyzed while the DG technology has been used widely now. Traditional reliability assessment theory can hardly to be applied, because basic historical DG reliability data has not been accumulated. The distribution Systems reliability assessment including distributed generation based on credibility theory is proposed to solve this problem. Three new reliability index are proposed: Random-Fuzzy Expected Energy Not Supplied(RFEENS), Random-Fuzzy Customer Average Interruption Duration Index(RFCAIDI), and Random-Fuzzy Customer Average Interruption Frequency Index(RFCAIFI). Assessment procedure for RFEENS and RFCAIDI is based on random fuzzy expected value, while the procedure for RFCAIFI is based on average chance Measure. The test results on IEEE system demonstrate that the proposed method is flexible enough to accommodate system's security objectives.
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