特高压交流同步电网的无功电压优化  

Reactive power and voltage optimization of UHV AC synchronized power grid

作　　者：蒋平[1] 秦昱[1] 顾伟[1] 丁扬[2] 孙岗[2] 

机构地区：[1]东南大学电气工程学院,江苏南京210096 [2]国家电网公司特高压建设部,北京100031

出　　处：《电力自动化设备》2009年第8期95-99,共5页Electric Power Automation Equipment

摘　　要：针对以特高压为主干网架的同步交流输电网的特点建立了考虑静态电压稳定性指标、全网有功网损以及电压水平约束的无功优化的数学模型。对于大规模电网分析带来的维数灾问题,提出了按照割线灵敏度法优选控制变量,以降低搜索空间的维数,并将大范围互联电网分层分区,使用协同进化算法寻优,以提高搜索效率和解的质量。使用某一以特高压为主干网架的输电网的测试网络作为算例进行无功电压优化控制,结果证明所提出的优化模型和算法是快速、有效的。A reactive power optimization model is set up for UHV AC synchronized power grid,considering the static state voltage stability, active power loss and voltage level. Measures are presented to solve the dimension disaster problem：select the control variables by the secant sensitivity method to reduce the dimension of search space;divide the power system into 2 layers and several zones according to the voltage grades and locations and use the cooperative coevolutionary approach to improve the search efficiency and solution quality. A test system of UHV power grid is simulated, and the results prove that the optimization model and approach are fast and effective.

关 键 词：特高压电网 无功优化 静态电压稳定性 割线灵敏度 协同进化算法 

分 类 号：TM723[电气工程—电力系统及自动化] TM761.1