基于SSN解算器的MMC-HVDC系统RT-LAB实时仿真  

SSN-Based RT-LAB Simulation of MMC-HVDC System

作　　者：王韦华 朱晋[2] 李炜 邹毅军 

机构地区：[1]加拿大OPAL-RT技术有限公司 [2]中国科学院电工研究所,北京100190 [3]上海科梁信息工程有限公司,上海200233

出　　处：《南方电网技术》2015年第6期22-27,共6页Southern Power System Technology

摘　　要：针对MMC-HVDC系统,构建了基于状态空间节点解算器(SSN)的改进RT-LAB仿真模型。该模型集成了基于FPGA亚微秒级M M C阀组仿真技术和基于SSN的背靠背系统及其相关交流电网仿真技术的优点与功能,可以实时模拟背靠背柔性直流输电系统的各种稳态和暂态运行工况,从而可以用于MMC的启动与充电控制策略研究及避雷器抑制直流单极短路过电压的效率研究。对背靠背MMC-HVDC算例的仿真验证了该模型的有效性。This paper proposes a SSN-based improved RT-LAB simulation model for MMC-HVDC system,which integrates the advantages and functions of both the FPGA-based sub-microsecond model of MMC valves and the model of a back-to-back HVDC link and adjacent AC networks using State-space Nodal（ SSN） solver. The model is able to simulate a MMC back-to-back HVDC system for both steady-state operations and various contingencies in real time so as to study the start-up and charging control strategies as well as the effectiveness of surge arrestors mitigating the over-voltage of DC faults. Simulations on a MMC back-to-back HVDC system demonstrate the feasibility of the proposed model.

关 键 词：RT-LAB实时仿真 柔性直流输电 背靠背系统 模块化多电平 状态空间节点解算器 

分 类 号：TM743[电气工程—电力系统及自动化]