【摘要】 以一个简化的环形配电网模型为对象,分析了造成环形配电网中线路损耗的主要原因;根据功率在环形网络中与阻抗成反比的自然分布规律,利用求极值的原理推导出了要使线路损耗最小的环形电网功率分布;借助统一潮流控制器的功率控制功能,设计了基于注入电压控制的统一潮流控制器串联侧的控制系统,使串联侧注入系统的电压与被控制线路电流所产生的功率与被控线路的功率方向一致,其大小与环形电网内的循环功率相等,从而消除环形电网内的循环功率,使环形配电网的线路损耗最小。通过对由两条电阻与电感比例不等的馈线而末端通过联络开关相连而形成的环形配电网的仿真实验验证了所设计的统一潮流控制器能有效减小线路损耗的功能。更多还原

【Abstract】 Taking the simplified loop distribution systems as an example,this paper analysis the main reasons result in the power loss in the feeder line;according to the nature power distribution theory of the loop systems,deduces the minimum power distribution in the loop power system through the extremum method;think about the power control function of the unified power flow controller,this paper designs the control system for the series side of the unified power flow controller based on the voltage control method,this control system insets a series voltage into the controller line,and produces a power,which in the same direction with the power of the controlled line and equals to the loop power of the loop system in quantity,and decreases the power loss by eliminating the loop power in the distribution system.Digital simulations in the loop distribution systems configured by two feeders with different resistance and reactance proportion are made,the results verified the function of UPFC designed in this paper for reducing the power loss of the distribution systems.更多还原