On the Sequential Control of ITER Poloidal Field Converters for Reactive Power Reduction  

作　　者：袁红文 傅鹏 高格 黄连生 宋执权 何诗英 吴亚楠 董琳 王敏 房同珍 

机构地区：[1]Institute of Plasma Physics,Chinese Academy of Sciences [2]China International Nuclear Fusion Energy Program Execution Center

出　　处：《Plasma Science and Technology》2014年第12期1147-1152,共6页等离子体科学和技术（英文版）

基　　金：supported by International Cooperation Project of Ministry of Science and Technology of China(4.1.P2.CN.01/1A)

摘　　要：Sequential control applied to the International Thermonuclear Experimental Re- actor （ITER） poloidal field converter system for the purpose of reactive power reduction is the subject of this investigation. Due to the inherent characteristics of thyristor-based phase-controlled converter, the poloidal field converter system consumes a huge amount of reactive power from the grid, which subsequently results in a voltage drop at the 66 kV busbar if no measure is taken. The installation of a static var compensator rated for 750 MVar at the 66 kV busbax is an essential way to compensate reactive power to the grid, which is the most effective measure to solve the problem. However, sequential control of the multi-series converters provides an additional method to improve the natural power factor and thus alleviate the pressure of reactive power demand of the converter system without any additional cost. In the present paper, by comparing with the symmetrical control technique, the advantage of sequential control in reactive power consumption is highlighted. Simulation results based on SIMULINK are found in agreement with the theoretical analysis.Sequential control applied to the International Thermonuclear Experimental Re- actor （ITER） poloidal field converter system for the purpose of reactive power reduction is the subject of this investigation. Due to the inherent characteristics of thyristor-based phase-controlled converter, the poloidal field converter system consumes a huge amount of reactive power from the grid, which subsequently results in a voltage drop at the 66 kV busbar if no measure is taken. The installation of a static var compensator rated for 750 MVar at the 66 kV busbax is an essential way to compensate reactive power to the grid, which is the most effective measure to solve the problem. However, sequential control of the multi-series converters provides an additional method to improve the natural power factor and thus alleviate the pressure of reactive power demand of the converter system without any additional cost. In the present paper, by comparing with the symmetrical control technique, the advantage of sequential control in reactive power consumption is highlighted. Simulation results based on SIMULINK are found in agreement with the theoretical analysis.

关 键 词：sequential control power diagram poloidal field converter ITER 

分 类 号：TL63[核科学技术—核技术及应用]