调相机运行特性和控制策略综述

Overview of Performance Characteristics and Control Strategies for Synchronous Condenser

调相机作为无功补偿设备广泛加装于特高压直流输电工程,能有效解决电力系统无功支撑能力不足的问题。本文首先系统分析调相机的数学模型,提炼出调相机动态性能优化的电气参数。通过仿真及实际工程的应用效果验证了调相机的良好的无功出力特性。然后将调相机与其他无功补偿设备进行比较,说明了调相机具备更强的暂态无功输出与电压支撑能力。在此基础上,详细阐述了现有调相机无功电压控制策略,并分析了不同控制策略的优缺点。最后,结合当前电网对同步调相机组的要求,探讨了未来同步调相机发展需要研究的关键技术。

As reactive power compensation equipment, synchronous condenser is widely installed in ultra high voltage direct current (UHVDC) project, which can effectively solve the problem of insufficient reactive power support capability of the power system.Firstly, this paper systematically analyzes the mathematical model of the synchronous condenser, and summarizes the electrical parameters which affect the dynamic performance optimization of the synchronous condenser.The good reactive power output characteristics of synchronous condenser are verified by simulation analysis and practical engineering application effect.Then synchronous condenser is compared with other reactive power compensation equipment,and the results show that the synchronous condenser has stronger transient voltage regulation and dynamic voltage support ability.On this basis,the existing reactive voltage control of synchronous condense are described in detail, and the pros and cons of control methods are analyzed.Finally,the key technologies that need to be studied in the future development of synchronous condenser are discussed based on the current grid requirements for synchronous condenser.