中国电机工程学报2016，Vol.36Issue(7)：1808-1816,9.DOI:10.13334/j.0258-8013.pcsee.2016.07.006
分层接入方式的特高压直流输电逆变侧最大触发延迟角控制
Inverter Maximum Alpha Control in UHVDC Transmission With Hierarchical Connection Mode
摘要
Abstract
With the development and widespread use of ultra high-voltage direct current (UHVDC) transmission technology, the multi-infeed HVDC system in load center of China will be the prominent problem in the development of China power grid. UHVDC with hierarchical connection can improve the alternating voltage support capacity in the multi-infeed HVDC system and has been included in the national power grid planning. When an alternate current (AC) grid has a fault, the converter connected to the other normal AC grid in the inverter, which is controlled by the conventional inverter maximum alpha control, will fail to commutate. In this paper, an improved inverter maximum alpha control was proposed. When an AC grid has a fault, the converter connected to the other normal AC grid is not to increase the direct voltage to reduce the direct current, but to decrease alpha to avoid commutation failure. The converter can commutate normally, and avoid the oscillation of the DC power.关键词
特高压直流输电/分层接入方式/逆变侧最大触发延迟角控制/定γ角控制/晶闸管Key words
ultra high-voltage direct current (UHVDC) transmission/hierarchical connection mode/inverter maximum alpha control/constantγcontrol/thyristor分类
信息技术与安全科学引用本文复制引用
卢东斌,王永平,王振曦,曹冬明..分层接入方式的特高压直流输电逆变侧最大触发延迟角控制[J].中国电机工程学报,2016,36(7):1808-1816,9.基金项目
国家电网公司总部科技项目(±800 kV特高压直流容量提升到10000 MW接入500/1000kV交流电网关键技术研究)。 SGCC Technology Project (Key technology research on 800 kV,10000 MW UHVDC with hierarchical connection to 500/1000 kV AC grids) （±800 kV特高压直流容量提升到10000 MW接入500/1000kV交流电网关键技术研究）
