【作者】 陈海燕；

【导师】 顾雪平； 李文云；

【作者基本信息】 华北电力大学 ， 电力系统及其自动化， 2011， 硕士

【摘要】 黑启动恢复是大停电后电网快速重建的一种有效方式,研究黑启动恢复问题对于加快系统恢复速度、减轻恢复控制负担、减小大停电事故带来的损失具有重要意义。网架恢复作为贯穿黑启动恢复过程的主线,其恢复策略的好坏直接影响系统恢复的效率,而网架恢复与机组启动、负荷恢复的协调优化是研究的重点和难点。本文首先对影响机组启动顺序的因素进行了调查分析,在此基础上,建立了考虑机组启动顺序的网架恢复优化模型,并采用最短路径法和交叉粒子群算法联合进行求解。按此方法进行网架恢复的优化可以使得尽可能多的系统发电能力得到恢复。对于网架恢复过程中机组功率的平衡问题,本文根据此过程中负荷恢复的特点,给出了负荷恢复重要性评价模型和负荷恢复求解策略。一方面,综合节点重要度、负荷重要性和送电路径三方面因素建立负荷节点重要性评价模型,并在此基础上采用的离散粒子群算法进行求解,能有效地确定出时段内可优先恢复的负荷点,以平衡系统有功功率;另一方面,以时段内系统出力的增量引导负荷恢复,可使系统中的负荷得到有序、高效的恢复。更多还原

【Abstract】 Black-start restoration is an effective method for power system restoration after blackout. Resarch on black-start restoration is of great significance to speed up the restoration process, reduce the burden of restoration control work and the losses of power outage. As the most important stage of the black-start restoration, network reconstruction and its optimization strategy have great effects on the efficiency of power system restoration. The most important and difficult work of the study on network reconstructing strategy is the coordination of network reconfiguration, the unit start-up and load restoration. On the basis of analyzing the impact factors of unit start-up sequence, a mathematical model of network reconstruction is established with consideration of unit start-up sequence optimization. The shortest path method and crossed particle swarm optimization algorithm are combined to solve the network reconstruction problem. In this way, as much generating capacity as possible can be restored. For the balance problem of generating power and load, a load importance evaluation model and load recovery strategy are proposed in the thesis. On the one hand, the load importance evaluation model is established by integrating the node importance and load importance with transmission path cost, the DPSO algorithm is used to determine the prior restored load buses with the aim of the system active power balance. On the other hand, the available incremental power output in the current period is used to guide the load restoration, so the system load can be restored orderly and efficiently.更多还原