闽粤联网直流工程与SVG/HAPF协同运行特性及现场试验

Characteristics and Commissioning of the Collaboration Between the Min-Yue Back-to-Back HVDC Transmission System and SVG/HAPF

闽粤联网背靠背直流输电工程配置了专用于大容量高压直流工程滤波的高压直流工程滤波的高压有源滤波器(high voltage active power filter,HAPF)和静止无功发生器(static var generator,SVG),以分别满足换流站两侧的滤波需求和无功功率支撑。根据闽粤工程的特点,提出了完整的直流系统带电试验方案和HAPF、SVG与直流协同运行试验方案,验证了设备的可用性及与直流系统的适配性。针对实际运行中SVG故障退出事件,深入分析了SVG的高压暂态响应过程中多因素引起的连锁反应过程,并根据针对性的优化控制策略,提出了SVG单体设备高压/低压/三相不平衡暂态控制带电试验方案,以及验证SVG故障下SVG与直流系统全过程整体控制策略的系统试验方案,通过现场实施,验证了优化策略的正确性和有效性。

HAPF(high voltage active power filter)and SVG(static var generator),which are specially used for filtering in largecapacity HVDC projects,are configured in the Min-Yue back-to-back HVDC transmission project to meet the filtering requirements and reactive power support on both sides of the converter station respectively.In this paper,according to the characteristics of the Min-Yue project,a complete live commissioning scheme of the HVDC system and a collaborative operation test scheme of HAPF,SVG and HVDC are proposed,which have verified the availability of the equipment and its compatibility with the HVDC system.In view of the SVG fault events in actual operation,the complex problems caused by multiple factors in the process of high voltage transient response of SVG are analyzed in depth,and according to the targeted optimization control strategy,a high voltage/low voltage/three-phase unbalanced transient control test scheme of single SVG equipment is proposed.And a system test scheme is also proposed to verify the overall control strategy of the whole process of SVG and HVDC system under SVG fault.The correctness and effectiveness of the optimization strategy are verified through field implementation.