摘要
多源多变换微电网整合中低压配电网中特性各异的分布式发电系统和负荷,多类型微电源、多类型负荷动态特性相互耦合、互相影响,传统以交流同步发电机供电电源为基础的系统稳定分析与控制方法无法满足多源多变换微电网大规模发展的要求。首先对近年来国内外多源多变换微电网大扰动暂态稳定性的研究进行评述,归纳总结可再生能源渗透率不断提升下微电网典型运行特性和存在的暂态稳定性问题。在微电网暂态稳定性分类的基础上,分别从微电网暂态稳定问题、暂态稳定分析方法和微电网暂态稳定性提高措施三方面对微电网暂态稳定性的研究动态进行分析、评价和探讨;最后,预测和探讨了微电网大扰动暂态稳定性研究的发展趋势。
Widespread heterogeneous distributed generations（DGs） and loads in medium-and low-voltage distribution networks are integrated in microgrids with multiple energy resources and multiple conversions. Dynamic characteristics of multiple microsources and loads are mutually coupled and influence each other. Traditional stability analysis and control method for power systems based on AC synchronous generator cannot meet the requirements of large-scale development of the microgrids with multiple energy resources and multiple conversions. In this paper, firstly, typical operating characteristics and large-disturbance transient stability issues of the microgrids with increasing penetrations of renewable energy resources are summarized in detail. Based on the classification of the microgrid transient stability issues, state of the art in microgrid transient stability studies are reviewed and discussed comprehensively from the viewpoints of transient stability, analyzed approaches and methods of improving transient stability. Finally, the trends for microgrid transient stability research are also presented.
出处
《电网技术》
EI
CSCD
北大核心
2017年第7期2195-2204,共10页
Power System Technology
基金
国家高技术研究发展计划项目(863计划)(2014AA052001)
广东省科技计划项目(2012B040303005)
广州市南沙区科技计划项目(2013P005)
南方电网科学研究院科技项目(SEPRI-K143003)
国家留学基金管理委员会资助联合培养博士研究生项目(201406150017)~~
关键词
微电网
多源多变换
分布式电源
电力电子变换器
大扰动
暂态稳定性
暂态稳定性提高措施
microgrids
multiple energy resources and multiple conversions
distributed generations
power electronic converters
large-disturbance
transient stability
methods of improving transient stability
