CAJ | 학술논문

电力系统大停电后系统的快速恢复是电力系统一直以来要解决的重要问题。通过对现有黑启动模型的分析发现，针对全黑情况下启动全网的所有发电机时，现有的最优目标设置和最优问题描述有可能导致一台发电机爬坡而其他发电机等待的现象。为解决这一问题，充分考虑发电机的物理调节特性，提出描述实际问题的变约束的最大值最小的优化模型，并通过引入时间变量 t，将变约束的最大值最小优化问题等价为内点法可解的定约束最优潮流(optical power flow，OPF)问题，克服了最优潮流中求解变约束最大值最小问题的难点，提出计及发电机出力特性的电力系统黑启动优化计算策略。IEEE 30节点标准系统的仿真结果表明，该方法有效，可明显缩短启动时间。该成果已经成功用于电力系统自愈决策系统软件，在广东电网公司投运。
전력계통대정전후계통적쾌속회복시전력계통일직이래요해결적중요문제。통과대현유흑계동모형적분석발현，침대전흑정황하계동전망적소유발전궤시，현유적최우목표설치화최우문제묘술유가능도치일태발전궤파파이기타발전궤등대적현상。위해결저일문제，충분고필발전궤적물리조절특성，제출묘술실제문제적변약속적최대치최소적우화모형，병통과인입시간변량 t，장변약속적최대치최소우화문제등개위내점법가해적정약속최우조류(optical power flow，OPF)문제，극복료최우조류중구해변약속최대치최소문제적난점，제출계급발전궤출력특성적전력계통흑계동우화계산책략。IEEE 30절점표준계통적방진결과표명，해방법유효，가명현축단계동시간。해성과이경성공용우전력계통자유결책계통연건，재엄동전망공사투운。
ABSTRACT:Fast restoration from a large scope blackout is very important to power systems. However, the existing optimal objective and model to start-up all the generators may cause problems that some of the generators are ramping while others are waiting. To solve this problem, considering the generator regulation characteristics, we presented a minimizing variable constrained maximum value model to describe the actual problem. Through introducing a time variablet, the variable constrained optimization problem was converted to a constrained optimal power flow (OPF) problem, which can be solved by using interior point method. By using the proposed model and method, the optimization method considering the characteristics of the generator for power system black start was proposed in this paper. Numeric tests on IEEE 30-bus system show that the proposed algorithm is effective and can obviously reduce the restoration period of the system. The proposed method has been successfully applied to the restoration decision software of power systems in Guangdong Power Grid Corporation.