电网技术2017，Vol.41Issue(11)：3448-3456,9.DOI:10.13335/j.1000-3673.pst.2017.1887
±1100kV特高压直流分层接入方式下改进附加功率协调控制策略
Improved Additional Power Coordinated Control of±1100kV UHVDC System With Hierarchical Connection Mode
摘要
Abstract
± 1100 kV UHVDC transmission project will adopt hierarchical connection mode at its receiving end with its high and low converters integrated to 500 kV and 1000 kV AC grids respectively on inverter side. To solve the problem that conventional control strategy cannot control transmission power independently, an improved additional power coordinated strategy is proposed. To reduce probability of commutation failure in each converter during power lifting emergency, power distribution coefficient and power allocation strategy are proposed. The lifted power will be allocated to each converter coordinatively. Simulation results show that the improved additional power coordinated control strategy can control the transmission powers of the converters flexibly and coordinatively. The lifted power can be reasonably allocated to each converter using power allocation control strategy in power emergency control. It will make full use of the power transmission capacity of each converter to ensure a large margin of arc angle of each converter and reduce probability of commutation failure in each converter.关键词
±1100kV/分层接入/改进附加功率协调控制/分配系数/功率分配策略Key words
±1100kV/hierarchical connection/improved additional power coordinated control/allocation coefficient/power allocation control strategy分类
信息技术与安全科学引用本文复制引用
熊永新,付颖,沈郁,姚伟,艾小猛,文劲宇,张健,屠竞哲,曾兵,郭贤珊..±1100kV特高压直流分层接入方式下改进附加功率协调控制策略[J].电网技术,2017,41(11):3448-3456,9.基金项目
国家重点研发计划资助项目(2016YFB0900800). Project Supported by the National Key Research and Development Program of China (2016YFB0900800). （2016YFB0900800）
