摘要
双电源配电环网是实现配电网故障无缝自愈进而有效解决短时停电问题的基础,但配电环网中潮流呈自然分布且缺乏有效的调节手段。利用统一潮流控制器(UPFC)对双电源配电环网潮流控制方法进行研究。基于配电环网潮流分布与潮流控制规律,以负荷节点电压偏移与合环馈线功率输出极限为约束条件,推导出在功率调节量一定时UPFC输出有功功率最小的潮流优化控制策略。该方法能够在满足潮流灵活调节的前提下保证UPFC应用的经济性。针对两端出力不均的情况建立了双电源配电环网仿真模型,仿真结果证明了该方法的有效性。
The closed loop distribution network of double sources is the basis of realizing the seamless fault self-healing of distribution network fault, but the power flow has the characteristic of natural distribution and is lack of effective control means. We adopt united power flow controller （UPFC） to research the power flow control methods. Based on analyzing the power flow distribution and control regularity with the normally closed loop distribution, and taking the load node voltage deviation and closed loop feeder power output limit as constraints, we deduce the optimal power flow control scheme in the condition of minimum active power output by UPFC when the power regulation variables are fixed. The control method can ensure the economy of UPFC application while meeting the flexible regulation of power flow. Considering the issue of unequal output at two sides, we establish a simulation model for the closed loop distribution network of double sources. Simulation results show that the method is effective.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第13期88-92,共5页
Power System Protection and Control
基金
国家自然科学基金面上项目(51177096)
国家技术研究发展计划(863计划)(2012AA050213)~~
关键词
配电环网
统一潮流控制器
串联补偿
潮流控制
电压偏移
normally closed loop distribution
united power flow controller （UPFC）
series compensation
power flow control
voltage deviation
