1. A.E. Mohamed, A.A. Essam, Framework for identification of power system operating safety regions. The Third International Conference on Net-work and System Safety, Queensland, 2009, pp. 415–419
2. Y.U. Yixin, Review of study on methodology of safety regions of power system. J. Tianjin Univ. 41(6), 635–646 (Ch) (2008)
3. Y. Zhang, Y. Qin, L. Jia, et al., Research on method framework of safety region estimation in rail transportation system operation safety assessment. J. Syst. Simul. Technol. Appl. 13, 1018–1022 (2011)
4. Y. Zhang, Y. Qin, L. Jia, Research on methodology of safety region estimation of railway system operation safety assessment. Proceedings of World Congress on Engineering and Technology 2011, 06, pp. 803–807
5. T. Zheng, Y. Pan, K. Guo, et al., Study on fault location method of distribution network based on immune algorithm. Power. Syst. Protect. Control. 42(1), 77–83 (2014)