中国电机工程学报2016，Vol.36Issue(17)：4637-4646,10.DOI:10.13334/j.0258-8013.pcsee.151684
多端口直流-直流变换器功率自动平衡控制
Power Balance Control of a Multiport Front-to-front DC-DC Converter
摘要
Abstract
Automatic power balance control of a multi-terminal DC system (MTDC) constructed by a multiport front-to-front connected DC/DC converting system (MF2F) was proposed. To overcome the instability problem, a generic controller including a ‘normal control loop’, an “inner balance loop” and an “external balance loop” is proposed for each port of the MF2F. Further power balance controllers installed at external MTDC terminals were also designed. The designed power balance controls were verified by a test four terminal MTDC system constructed by a 4-port MF2F. Simulations of un-balanced power orders, AC faults and DC faults verified the proposed power balance controllers. The proposed power balance controllers enable automatic power balance inside a MF2F and automatic power balance between a port and its externally connected DC terminal without relying on intervention from upper layer operators. The proposed controllers can be used as generic controllers for a MTDC or a MTDC including multiport DC/DC converters.关键词
直流输电/多端直流输电/直流电网/直流-直流换流器/多端口直流-直流换流器/功率平衡控制Key words
high voltage direct current/multi-terminal DC system/DC grid/DC/DC converter/multiport DC/DC converter/power balancing control分类
信息技术与安全科学引用本文复制引用
苗璐,林卫星,姚良忠,劲宇,王志冰..多端口直流-直流变换器功率自动平衡控制[J].中国电机工程学报,2016,36(17):4637-4646,10.基金项目
国家电网公司专项(国家电网科研2013-304号)；国家自然科学基金委员会项目(51261130484)。State Grid Corporation of China (State Grid Research 2013-304) （国家电网科研2013-304号）
Project Supported by National Natural Science Foundation of China (51261130484) （51261130484）
