适用于多馈入直流系统静态电压稳定分析的综合短路比强度指标

发布时间：2018-01-11 15:03

本文关键词：适用于多馈入直流系统静态电压稳定分析的综合短路比强度指标　出处：《中国电机工程学报》2017年22期 　论文类型：期刊论文

【摘要】：针对过往多馈入直流(multi-infeed line commutated converter based high voltage direct current,MIDC)系统强度指标不能准确反映静态电压稳定的问题,该文研究计及MIDC系统静态电压稳定的强度指标定义方法。首先,在推导MIDC系统潮流分析模型的基础上,定义基于多馈入交互作用因子的等值耦合导纳的概念,等值耦合导纳可定量反映MIDC系统中其余直流子系统对被研究直流子系统的影响;并建立基于等值耦合导纳的MIDC系统单端口等值模型。其次,基于建立的MIDC系统单端口等值模型,提出一种能够准确衡量MIDC系统静态电压稳定的多馈入综合短路比(multi-infeed integrated short circuit ratio,MISCR)强度指标。最后,在不同直流功率增长场景和控制方式组合下的算例分析结果表明,所提MISCR指标比过往强度指标更能准确地衡量MIDC系统的静态电压稳定性。
[Abstract]:For past multi-fed DC (. Multi-infeed line commutated converter based high voltage direct. Current. The strength index of MIDC system can not accurately reflect the problem of static voltage stability. This paper studies the definition method of strength index considering static voltage stability of MIDC system. Based on the power flow analysis model of MIDC system, the concept of equivalent coupled admittance based on multi-infeed interaction factor is defined. The equivalent coupling admittance can quantitatively reflect the influence of the other DC subsystems on the DC subsystem studied in MIDC system. The single-port equivalent model of MIDC system based on equivalent coupled admittance is established. Secondly, based on the established MIDC system single-port equivalent model. A multifeed integrated short-circuit ratio which can accurately measure the static voltage stability of MIDC system is proposed. Multi-infeed integrated short circuit ratio. Finally, the analysis results of different DC power growth scenarios and control methods show that. The proposed MISCR index can measure the static voltage stability of MIDC system more accurately than the previous strength index.
【作者单位】：强电磁工程与新技术国家重点实验室(华中科技大学电气与电子工程学院);
【基金】：国家重点研发计划项目(2016YFB0900100)~~
【分类号】：TM712
【正文快照】： 互作用因子的等值耦合导纳的概念,等值耦合导纳可定量反映MIDC系统中其余直流子系统对被研究直流子系统的影响;并建立基于等值耦合导纳的MIDC系统单端口等值模型。其次,基于建立的MIDC系统单端口等值模型,提出一种能够准确衡量MIDC系统静态电压稳定的多馈入综合短路比(multi-i

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