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文中阐述限流式静止同步串联补偿器(Static Synchronous Series Compensator,SSSC)工作原理,采用SSSC加强风火打捆系统送端与受端的电气联系.基于双馈风机等效外特性建立含限流式SSSC的风火打捆系统在正常运行、故障期间及故障后的功率模型,通过等面积定则推导出限流式SSSC的限流电阻与首摆暂态稳定裕度之间的关系,提出故障期间投入限流电阻保证首摆稳定性的策略;分析故障切除后,风电有功恢复以及SSSC的补偿度对首摆之后电磁功率的影响,提出根据火电机组功角的变化以及风电有功恢复情况,在不同阶段、每个振荡周期的奇、偶数摆过程中,通过改变SSSC的补偿度抑制第一摆之后的功率振荡的控制策略,改善风火打捆系统的暂态稳定性.在Simulink搭建仿真模型进行验证,结果表明限流式SSSC在不同摆期间控制策略可有效提高风火打捆系统暂态稳定性.

In contemporary power systems, maintaining stability and minimizing oscillations is vital for ensuring a continuous and dependable electricity supply. A promising solution to achieve these objectives is the multi-line device method used. The research investigates development of a PIbased controller for two static synchronous series compensators (SSSCs), using a unified and simultaneous firing strategy across multiple transmission lines. The primary goal is to enhance the system's first peak stability, reduce settling time, and suppress oscillations within large and complex networks. The control strategy for the voltage fed inverterbased SSSC designed to augment transient actuation under different operating conditions. The performance of PIconfigured IPFC in comparison of Function Fitting ANN is designed to achieve 95.26& enhance stability under large disturbance, which is validated in a MATLAB simulation environment.

The static synchronous series compensator (SSSC) is a device for controlling the power flow and compensating losses in the transmission lines. A transformerless SSSC (TLSSSC) with control system was developed for a high-voltage transmission line. It is based on modular multilevel converter topology. The compensator has been successfully designed and validated using a mathematical model in MATLAB/Simulink. The next stage of the study is experimental validation of the proposed solutions for prototype of the TLSSSC. However, the compensator operates at 10 MW and the manufacturing facilities do not have the necessary power sources to conduct these tests. Therefore, this paper presents the design of the test bench and control system required for the functional verification of the TLSSSC parameters after manufacturing.

随着"双碳"目标的提出,我国的新能源建设正处于新一轮的发展阶段,但是高渗透率新能源的随机性、波动性也给电力系统静态电压稳定性分析带来了挑战.与此同时,电力电子技术的发展使得柔性交流输电系统(flexible AC transmission system,FACTS)在调节线路潮流、改善电力系统静态电压稳定性方面得到广泛应用.提出了一种考虑新能源不确定性的含分布式静止同步串联补偿器(distributed static series compensator,DSSC)的电力系统静态电压稳定性概率评估方法.首先分析了新能源并网系统的静态电压稳定机理.然后阐述了DSSC的工作原理,建立了DSSC的等效功率注入模型,并基于此模型推导出含DSSC的潮流方程.其次基于潮流计算方程提出了一种能映射新能源不确定性的静态电压稳定性指标,并采用蒙特卡洛模拟法实现了系统静态电压稳定性指标概率评估.最后通过算例分析验证了高渗透率新能源的不确定性导致系统静态电压稳定指标分布范围变大,系统失稳概率增加,合理配置DSSC能够有效提升电力系统静态电压稳定性,所提方法能够准确反映新能源不确定性对电网稳定性的影响,具有一定的工程应用价值.