灵活交流输电系统研究─—统—潮流控制器的分析与仿真

统一潮流控制器（ＵＰＦＣ）是灵活交流输电系统研究中最有吸引力的领域之一。根据其新颖的设计思想，它能够控制系统的所有基本参数，灵活地改变功率分布及控制系统的运行状态。本文首先分析了统一潮流控制器的原理和基本运行状态，然后用仿真结果验证了统—潮流控制器控制线路功率及维持母线电压的能力。仿真结果还证明了ＵＰＦＣ能提高电力系统的稳定性。所有仿真都是用电力科学研究院开发的电力系统综合计算程序进行的。

STEADY STATE ANAL YSIS AND LOAD FLOWCALCULATION OF UNIFIED POWER FLOW CONTROLLER IN POWER SYSTEM

The Unified Power Flow Controller(UPFC)is novel concept and one of the most enter-prising realization of the idea of Flexible AC Trans-mission Systems(FACTS).In UPFC,advanced con-verters are used as controllable sources(voltage andcurrent sources),which can control all of the basicpower system parameters(i.e. ,voltage,phase angle,line impedance,shunt current ).This paper first pre-sents the basic principle followed by the analysis of thebasic operation states.Several results are presented todemonstrate the ability VPFC in power flow controland bus voltage support. The simulation results atsoprove that the UPFC can be used to enhance power sys-tem stability, All the results are obtained from the sim-ulation in UDPSASP,a software developed by EPRI of China.