基于H桥级联的半波长交流输电柔性Π形调谐及其仿真分析  

Flexible Π-type Tuning Scheme of Half-wavelength Alternating Current Transmission with Cascaded H-bridges and Its Simulation and Analysis

作　　者：王鑫 戴朝波 李琳[3] 赵国亮 孙谊媊 于永军 WANG Xin;DAI Chao-bo;LI Lin;ZHAO Guo-liang;SUN Yi-qian;YU Yong-jun(Weifang Power Supply Company, State Grid Shandong Electric Power Company, Weifang 261000, China;State Key Laboratory ofAdvanced Power Transmission Technology, Global Energy Interconnection Research Institute Co Ltd, Beijing 102209, China;School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;Electric Power Research Institute, State Grid Xinjiang Electric Power Company, Urumqi 830011, China)

机构地区：[1]国网山东省电力公司潍坊供电公司,潍坊261000 [2]全球能源互联网研究院有限公司先进输电技术国家重点实验室,北京102209 [3]华北电力大学电气与电子工程学院,北京102206 [4]国网新疆电力公司电力科学研究院,乌鲁木齐830011

出　　处：《科学技术与工程》2019年第25期204-210,共7页Science Technology and Engineering

摘　　要：针对工程实际的应用,提出了基于H桥级联的半波长交流输电柔性Π形调谐方案,具体包括两组并联调谐器和一组串联调谐器。调谐器能灵活调节各自的输出,以适应输电系统参数和运行方式等变化。在PSCAD中建立了半波长交流输电柔性调谐等值仿真系统,设计了调谐器的容量、级联单元数、功率模块的直流电容值等关键参数,通过仿真分析验证了柔性Π形调谐的可行性、控制策略的有效性以及对系统参数和运行方式变化的适应性。柔性调谐还具有能灵活补偿系统的功率因数的优点。It is for engineering application that a flexible Π type tuning scheme of the half-wavelength ac transmission( HWACT) with cascaded H-bridges is proposed,and the scheme includes two parallel tuners and one series tuner,which can flexibly adjust their output to deal with various changes of power system parameters and operation conditions. In addition,the equivalent simulation system of flexible tuning of HWACT is established using PSCAD. The important parameters are designed such as the capacity and cascaded number of these turners with direct current capacitance of power modules. The simulation results show the feasibility of the proposed flexible Πtype tuning scheme,the effectiveness of the proposed control strategies and adaptability to the changes of power system parameters and operation conditions. The flexible tuning scheme also shows its advantage by flexibly compensating power factor.

关 键 词：半波长交流输电 H桥级联 柔性调谐 功率因数补偿 

分 类 号：TM721[电气工程—电力系统及自动化]