摘要
基于电网分区域计算原则,建立了省地协调的自动电压控制系统优化控制策略,并通过多线程方式实现各分区并行运算;采用辅助问题原理并按照电力系统的实际地理分布,在某些联络线处将整个电网分解为多个相对独立的子网络,相邻子网络间通过边界节点产生的约束条件进行协调,形成一个迭代形式的优化计算框架;每次迭代中通过不断交换边界节点信息,将互联外网信息反映到各分区的计算中,从而将地区电网省地协调优化问题转化为多个规模相对较小的子系统并行协调优化问题,降低了问题的求解难度。将所提出的并行优化策略应用于实际的地区电网AVC系统,运行结果表明:该算法可以降低系统网损,提高电网的经济效益,有利于提高电力系统的安全经济性,具有较强的实用性。
Based on subarea division of the power system, a distributed parallel coordinated control strategy for automatic voltage control system is proposed. By using the auxiliary problem principle （APP） method, a complex power system is decomposed into several logical independent subsystems geographically, which are coordinated via restriction of the jointed borders. An iterative computation framework is formed and the external information is reflected into subarea calculation by exchanging the information of boundary nodes. The regional power system coordinated control problem is decomposed into several parallel coordinating subsystem optimization ones. The proposed parallel control algorithm is applied to a practical regional grid, and the results indicate that the algorithm rapidly reduces the calculation complexity with higher efficiency and practicality.
出处
《能源技术经济》
2011年第7期30-34,共5页
Electric Power Technologic Economics
关键词
电力系统
电网分区
并行计算
辅助问题原理
协调控制
power system
subarea division
parallel computation
auxiliary problem principle
coordinated control
