调谐型相间功率控制器的稳态特性研究

STUDY ON STEADY-STATE CHARACTERISTICS OF TUNED INTERPHASE POWER CONTROLLER

相间功率控制器 (IPC)是一种控制输电线路功率的装置 ,是 FACTS家族的成员。与其它 FACTS装置不同 ,它可以不采用电力电子器件 ,而仅由常规器件组成。当其两端相对功角发生变化时 ,主要依赖其固有的功率特性来维持其输送功率基本不变。此外 ,IPC还具有良好的限制短路电流特性以及两端电压互不影响的特性。文章阐述了 IPC的基本特性 ,分析了调谐型 IPC用于线路功率控制时 ,线路阻抗值对IPC基本特性的影响 ,还定性地讨论了调谐型

The Interphase Power Controller (IPC), a new member of the FACTS family, is a novel device to control the load flow in the transmission system. In contrast to the traditional FACTS controllers, IPCs can be constructed by conventional elements instead of power electronic devices. The active power flow is nearly constant over a wide range of generator angle across the IPC due to its inherent power flow control characteristics. Furthermore, the tuned IPCs have the unique properties such as effective restriction of short circuit currents and the mutuol independence of voltages at their terminals. In this paper the basic characteristics of the IPC are expounded, then the influence of the line impedance in series with the IPC upon the tuned IPC's performance is analyzed in detail. Finally, the two problems, i.e., the insufficient synchronizing capacity and the excessive over voltage, are qualitatively analyzed when the tuned IPCs are applied to the practical power systems.