摘要
针对H桥级联型静止同步补偿器(Static Synchronous Compensator,STATCOM)启动过程中预充电阶段存在的问题,在对采用不控整流方式预充电过程分析的基础上,提出一种改进的预充电控制策略。该控制策略自预充电阶段对装置各开关器件进行控制,使装置能够最大化吸收电网提供的有功功率,提高预充电阶段直流侧电压的稳态值,保证装置在整个启动过程处于可控状态。仿真和实验结果验证了改进的预充电控制策略的有效性与可行性。
According to the problem which exists in H-bridge cascaded STATCOM start-up process in the stage of precharge,and the process of pre-charge using the style of uncontrolled rectifier is analyzed. On this basis,an improved pre-charge control strategy is proposed. This strategy controls the switching devices in the stage of pre-charge,which enables STATCOM to absorb active power of the grid in maximum,improves the DC voltage steady value and ensures STATCOM in the whole start-up process. The simulation and experiment verify effectiveness and feasibility of the improved pre-charge control strategy.
出处
《电测与仪表》
北大核心
2016年第8期32-37,56,共7页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(51407184)
