Full-Dimensional Direct Observation of Distribution System Security Region
Xiao Jun1, CaoYan1, Zhang Baoqiang2, She Buxin1
1. Key Laboratory of Smart Grid of Ministry of Education Tianjin University Tianjin 300072 China; 2. CATARC Automotive Test Center (Tianjin) Co. Ltd Tianjin 300300 China
Abstract：Full-dimensional direct observation of distribution system security region (DSSR) is carried out in this paper. Firstly, the existing observation methods are summarized. Secondly, a full-dimensional direct observation method of DSSR is proposed. The full-dimensional direct observation of two-supply-one-standby and flexible two-supply-one-standby connections shows that the security domain of two-supply-one-standby is a concave polyhedron, which is composed of a“domain core” and multiple“domain corners”; The surface of its security region has “ridges” and “valleys”, and “valleys” form domain depression. The security domain of flxible two-supply-one-backup wiring is a convex polyhedron, and there is no “valley”, which fills the traditional depression of two supplies and one backup It can be seen that the full-dimensional direct observation clearly shows the different geometric characteristics of different power grid structures embodied in the security region. This paper further gives the physical meanings and formation reasons of “region core”,“region angle”,“ridge” and“valley”. Finally, the method of this paper is compared and summarized with other security domain observation methods.
肖峻, 曹严, 张宝强, 佘步鑫. 配电网安全域的全维直接观测[J]. 电工技术学报, 2020, 35(19): 4171-4182.
Xiao Jun, CaoYan, Zhang Baoqiang, She Buxin. Full-Dimensional Direct Observation of Distribution System Security Region. Transactions of China Electrotechnical Society, 2020, 35(19): 4171-4182.
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2020, Vol. 35 
