FACTS元件在AVC系统中的交互影响及协调应用

随着柔性交流输电（FACTS）技术的典型应用,静止无功补偿器（SVC）和静止同步补偿器（STATCOM）在电网中的应用越来越广泛。将可以实现连续调节的FACTS元件统一纳入到电网电压无功控制系统中,对于离散调节的AVC系统无功调节起到了弥补的作用,使系统保持足够的可调无功储备,提高了电网运行的安全性。相应地对于不同FACTS元件在电压无功控制系统中的交互影响及协调应用则是一个重要的课题。笔者提出了基于＂离散设备优先动作,连续设备精细调节＂原则的3级协调控制策略：采用AVC系统将变电站内电容、电抗及各种FACTS元件统一纳入控制体系,并简单分析了STATCOM控制器在控制系统中的交互影响（时间分级上及空间分区上）。最后通过仿真对提出的控制策略进行了验证,仿真显示系统具有良好的动静态性能。

Interaction Effect and Coordination Application of FACTS Elements in AVC System

With the typical application of FA-CTS technoiogy, SVC and STATCOM are used widely in the power grid. Bringing FACTS elements of achieving continuous adjustment into AVC system can play the supplementary role of reactive power adjustment of discrete adjustment. AVC system keeps the system to maintain sufficient adjustable reactive power reserve and improves operation safety of power network.It is an important topic about the interaction and coordination application of the different FACTS elements in AVC system.In this paper,the three-stage coordination and control strategy based on the rule of discrete equipment priority action,continuous equipment fine tune. AVC system is used to unify the capacitance,reactance in the substation and various FACTS elements into control system and the interaction of STATCOM controller in the control system （time stage and space section）. Finally,the proposed control strategy is verified throughout simulation. It is shown by the simulation that the system has good dynamic and static performance.