基于VSC-HVDC并网装置转为SSSC的仿真  

Simulation of Grid Paralleling Devices Converted into SSSC Based on VSC-HVDC

作　　者：刘家军[1] 王小康[1] 

机构地区：[1]西安理工大学水利水电学院,西安710048

出　　处：《电力系统及其自动化学报》2014年第11期17-22,共6页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金项目(51077109)

摘　　要：为了充分发挥基于VSC-HVDC同期并网装置的综合效益,在并网装置用于并网的主接线电路的基础上,在待并网的联络线上串接一台与并网装置容量及联络线电流匹配的三相变压器,增加相应的开关。在并网结束后,通过相应的电路倒闸操作可以转换为SSSC装置电路,并通过相应控制策略实现SSSC功能,提高并网联络线上的输送能力。通过在PSCAD/EMTDC中搭建并网系统转化为SSSC的模型,并仿真验证了其功能转换的可行性,特别是在并网系统发生故障时,这一功能转换可有效地抑制线路上传输功率的扰动和对并网系统的影响。Based on the main wiring diagram of the grid paralleling device,a three-phase transformer,which matches grid paralleling device capacity and tie,line current in the contact line,is connected to the grid.By increasing the corresponding switches,it can be converted to static synchronous series compensator（SSSC） device through the corresponding circuit switching operation.The SSSC function can be achieved through the corresponding control strategy.Therefore,the transmission capacity of grid paralleling contact line can be effectively improved.By building the conversion model of grid paralleling system in the PSCAD/EMTDC,the simulating results verify the feasibility of this function conversion,especially when the failure occurs in the grid system.This transformation can effectively inhibit the disturbances of transmission power and its impacts on the grid paralleling.

关 键 词：电压源换流器 静止同步串联补偿器 并网系统 功率传递 仿真 

分 类 号：TM71[电气工程—电力系统及自动化]