基于MMC的渝鄂直流背靠背联网工程控制策略研究  

Study on Control Strategy of Back to Back MMC-HVDC Connecting Chongqing and Hubei Power Grid

作　　者：樊云龙 任建文[1] 叶小晖 李霞 FAN Yunlong;REN Jianwen;YE Xiaohui;LI Xia(State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources,North China Electric Power University,Baoding 071003,China;China Electric Power Research Institute,Beijing 100192,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003 [2]中国电力科学研究院有限公司,北京100192

出　　处：《中国电力》2019年第4期96-103,共8页Electric Power

摘　　要：渝鄂直流背靠背联网工程的建设对大规模电网的动态控制能力提出了更高的要求。首先介绍了该工程的系统结构,在研究了基本的MMC-HVDC控制策略之后,从实际工程角度对系统运行的控制要求进行研究,提出了一种在传统功率控制基础上附加越限电压偏差值的双环控制策略。同时,介绍了MMC-HVDC在交流故障下的故障穿越逻辑,并结合MMC运行区间提出了MMC-HVDC的混合仿真流程。最后,基于PSD-PSModel对渝鄂系统进行混合仿真,验证了所提控制策略对于大规模联网工程的有效性与正确性。The constmction of back to back MMC-HVDC connecting Chongqing and Hubei Power Grid has put forward higher requirements for the dynamic control capability of large-scale power grids. This paper first introduces the system structure of the project. After s加dying the basic MMC-HVDC con廿ol strategy, considering the demand of the ac加al project for the conto^ the system operation, this paper proposes a new double-loop control strategy based on the traditional power control, in which the limit of the voltage deviation is added. At the same time, the fault crossing logic of MMC-HVDC under severe AC faults is introduced. The simulation process combining control strategy and MMC-HVDC operating zone is also provided. Finally, The PSDPSModel is used to simulate the Chongqing-Hubei system. The results verify the effectiveness and correctness of the proposed control strategy for large-scale networked projects.

关 键 词：故障穿越 混合仿真 模块化多电平换流器 越限控制 电力电子控制 

分 类 号：TM76[电气工程—电力系统及自动化]