摘要:针对双馈感应发电机(doubly-fed induction generator,DFIG)经电压源变流器–高压直流(voltagesourceconverterhigh voltage direct current,VSC-HVDC)并网,基于"主网频率-直流电压-风电场"串级下垂控制调频策略,建立DFIG经VSC-HVDC参与系统一次调频的动态潮流模型,用于量化DFIG备用与直流电容虚拟惯量协同控制下电网频率响应。计及DFIG有功备用,在直流电压限制范围内,提出直流电容虚拟惯性时间常数的取值上限。考虑调频过程中DFIG转速变化,提出基于转子动能的DFIG惯性时间常数动态修正算法,提高动态潮流结果精度。算例验证了所提算法分析DFIG与VSC-HVDC协同电网调频能力的可行性,证实计及DFIG参与调频的直流电容虚拟惯性时间常数最大取值可提升交流系统惯性水平;DFIG等效惯性时间常数修正算法符合其动态调频特性。
注:因版权方要求,不能公开全文,如需全文,请咨询杂志社
热门期刊服务
Journal of Hydrodynamics Journal of Genetics and Genomics Journal of Iron and Steel Research Journal of Systems Science and Complexity World Journal of Gastroenterology Journal of Computer Science and Technology Journal of Huazhong University of Science and Technology International Journal of Minerals Metallurgy and Materials The Journal of China Universities of Posts and Telecommunications Applied Mathematics:A Journal of Chinese Universities International Journal of Mining Science and Technology Journal of Systems Science and Systems Engineering