Turkish Journal of Electrical Engineering and Computer Sciences
Static security assessment is affected by uncertainties of load flow distributions introduced by renewable sources. A fast contingency selection approach based on interval theory is proposed in this paper. Firstly, an interval line active flow calculation algorithm is developed to reduce conservation in application of interval mathematics in line flow calculation. Then a novel interval comparison method based on Bayesian probability theory is applied in interval index comparison to give the relative severity information of contingencies. Finally, an approximately consistent ranking method is utilized in contingency ranking to rank screened contingencies. Numerical studies on several IEEE standard test systems and two practical provincial power grids in China under different load and generation conditions have proved that the proposed approach is computationally light and highly accurate under different uncertainties.
Contingency selection, Bayesian probability theory, DC power flow, interval arithmetic, uncertainty
XU, CHAO; GU, WEI; LUO, LIZI; YAO, JIANGUO; YANG, SHENGCHUN; WANG, KE; ZENG, DAN; and FAN, MIAO
"An interval-based contingency selection approach considering uncertainty,"
Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 24:
6, Article 11.
Available at: https://journals.tubitak.gov.tr/elektrik/vol24/iss6/11
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