电力建设Issue(8)：6-11,6.DOI:10.3969/j.issn.1000-7229.2014.08.002
混合式高压直流断路器的控制策略与实验研究
Control Strategy and Experimental Study of Hybrid HVDC Circuit Breaker
摘要
Abstract
Existing HVDC circuit breakers are capable of interrupting HVDC currents within several tens of milliseconds, but this is too slow to fulfill the requirements of a reliable HVDC grid.HVDC breakers based on semiconductors can easily overcome the limitations of operating speed,but need large number of the series (parallel ) connection of electronic switching devices;at the same time, it requires high technology and generates a lot of loss. To overcome these shortcomings,a topology of hybrid HVDC circuit breaker was introduced.Firstly,this paper described the principle of hybrid HVDC circuit breaker;then a control strategy of fault pretreatment was also proposed,that was the pre-action of the converter when fault occurred,in order to improve the breaking speed of the hybrid circuit breaker;at last the modeling and simulation were carried out on the hybrid HVDC circuit breaker by PSCAD,and unit prototype was made for the step-down experiments.The simulation and experimental results prove that:when a short circuit occurs,the hybrid HVDC circuit breaker can quickly break the short-circuit current;and the buffer circuit can be provided for the release of the stored energy circuit in DC circuit and load.关键词
混合式直流断路器/控制策略/建模仿真/实验研究Key words
hybrid DC circuit break/control strategy/modeling and simulation/experiment study分类
信息技术与安全科学引用本文复制引用
杜翼,江道灼,陈可,王玉芬,尹瑞,张弛..混合式高压直流断路器的控制策略与实验研究[J].电力建设,2014,(8):6-11,6.基金项目
国家高技术研究发展计划项目（863计划）（2013AA050103）。 （）
