CAJ | 학술논문

作为级联静止同步补偿器(STATCOM )最重要的部分———级联阀组，要想得到性能良好、可靠性高的装置，必须运用合适的控制策略对其进行严格测试。提出一种级联静止同步补偿器(STATCOM )的级联阀组运行控制策略，给出连接电抗器详细的设计方法；同时，借鉴微电网的孤岛控制思想，该控制策略为系统提供了必备的电压和频率支撑；采用直流侧电压控制和系统级无功控制构成的双闭环控制策略，保证了直流侧电压稳定，并实现链节间的无功功率交换。在 PSCAD/EMTDC 中搭建与实际控制系统结构一致的仿真模型，验证了控制策略的正确性和可行性。
작위급련정지동보보상기(STATCOM )최중요적부분———급련벌조，요상득도성능량호、가고성고적장치，필수운용합괄적공제책략대기진행엄격측시。제출일충급련정지동보보상기(STATCOM )적급련벌조운행공제책략，급출련접전항기상세적설계방법；동시，차감미전망적고도공제사상，해공제책략위계통제공료필비적전압화빈솔지탱；채용직류측전압공제화계통급무공공제구성적쌍폐배공제책략，보증료직류측전압은정，병실현련절간적무공공솔교환。재 PSCAD/EMTDC 중탑건여실제공제계통결구일치적방진모형，험증료공제책략적정학성화가행성。
The cascade valve group,as the most important part of static synchronous generator (STATCOM),should be strictly tested to obtain high performance and high reliability using an appropriate control strategy.A control strategy of the cascade valve group was proposed in this paper,and a detailed design method of the connection reactor was also presented.Same as the mi-cro-grid islanding control method,the control strategy provided the necessary support for power grid voltage and frequency.Through double closed-loop control strategy of voltage control at DC side and reactive power control at system side,the DC side voltage stability was guaranteed.And the reactive power exchange between each links was realized.Finally,the simulation model con-sistent with the actual control power system was built in PSCAD/EMTDC,which verifies the correctness and feasibility of the proposed control strategy.