Distributed Optimal Power Flow of AC/DC Interconnected Power Grid Using Synchronous ADMM

[摘要] Distributed optimal power flow (OPF) is of great importance and challenge to AC/DC interconnected power grid with different dispatching centres, considering the security and privacy of information transmission. In this paper, a fully distributed algorithm for OPF problem of AC/DC interconnected power grid called synchronous ADMM is proposed, and it requires no form of central controller. The algorithm is based on the fundamental alternating direction multiplier method (ADMM), by using the average value of boundary variables of adjacent regions obtained from current iteration as the reference values of both regions for next iteration, which realizes the parallel computation among different regions. The algorithm is tested with the IEEE 11-bus AC/DC interconnected power grid, and by comparing the results with centralized algorithm, we find it nearly no differences, and its correctness and effectiveness can be validated.

[发布机构] School of Electric Power, South China University of Technology, Guangdong Province, Guangzhou; 510640, China^1

[效力级别] 电工学

[关键词] Alternating directions;Centralized algorithms;Distributed optimal power flow;Information transmission;Interconnected power grid;Multiplier methods;Parallel Computation;Security and privacy