【作者】 张华；

【导师】 刘艳；

【作者基本信息】 华北电力大学 ， 农业电气化与自动化， 2015， 硕士

【摘要】 本文主要针对大停电后黑启动恢复控制过程网架重构阶段进行研究。在已确定黑启动电源的情况下,根据目标网架特点寻找安全、快速、有效的机组恢复顺序是顺利完成网架重构的基础。本文对系统恢复网架重构过程的模拟进行了深入研究,针对网架重构的模拟过程中供电电源的确定、系统负荷节点的划分、供电路径的优化、潮流分布的合理性、网架重构时间的统计等问题制定不同时步下通用的解决方案,保证了不同机组恢复顺序下网架重构过程的顺利进行。基于本文所制定的网架重构模拟策略对系统恢复过程进行了深入研究,结合网架重构机组投运风险的概念,加入恢复时间对重构过程的影响,进一步提出失电风险的概念。采用交叉粒子群优化算法,以失电风险最小为目标构建网架重构机组恢复顺序的优化模型,以本文所制定的网架重构模拟策略为基础,求解网架重构过程的系统失电风险值,最终,优化求得了网架重构过程失电风险最小的网架重构方案机组恢复顺序。针对新英格兰10机39节点系统的仿真结果表明了本文所构建优化模型的有效性,并且通过对网架重构过程的模拟,获得了详细的系统恢复数据,可作为调度人员进行系统恢复控制及决策提供可靠参考。更多还原

【Abstract】 This paper mainly studies the network reconfiguration in the electrical energy restoration black start after the large-scale blackout. In the case of black start power supply, it is essential for reconstructing network smoothly to identify the safe and effective units’ restoration sequence according to the target network features. This paper conducted in-depth research on the simulation of the network recognition, aimed to put forward an universal solution suitable for different phases for the operation of power supply, division of heavy load node, optimization of power supply path, rationality of load distribution, timing of the network recognition in the simulation of the network recognition, assuring the smooth operation of the network recognition based on the sequence of different units’ restoration. Based on the simulation strategy of the network reconfiguration, the in-depth research to the restoration of system and the definition of unit’s restoring risk and taking the duration into consideration, the risk of electrical energy loss during network reconfiguration is proposed further in this paper. Through integration of crossover particle optimization and Floyd algorithm, the risk of electrical energy loss could be minimized by means of detailed simulation regarding network reconfiguration. As a result, the optimal units’ restoration sequence which holds the higher operational reliability as well as the best technical performance is resolved. The outcome of its application on the New England 10-unit 39-bus power system indicates the validity of the method proposed in this paper. And through the simulation of the network reconfiguration, specific restoration of data has been acquired, which could provide references to dispatchers to restore the system and make final decisions.更多还原