摘要
低压配电网通常运行在三相不平衡状态。接入不平衡配电网的分布式电源在不同控制方式下,表现为不同的外特性。为了正确计算含分布式电源的主动配电网三相潮流,需要采用详细的三相分布式电源模型。采用统一的建模方法,建立不同控制方式下4类主要分布式电源(包括同步电机、异步电机、电力电子接口并网、双馈电机)的稳态模型,并将所建模型与已有模型进行对比分析,证明所建模型的正确性。文中建立的三相模型适用于分布式电源不平衡情况下的稳态建模,同时也适用于柔性输变电设备的建模分析。
Low voltage distribution network usually operates under three-phase unbalanced conditions. And the distributed generators （DGs）, integrated with distribution network, show different behaviors under different control strategies for unbalanced operating scenarios. For accurate three-phase power flow analysis, detailed three-phase DG models are needed. A unified technique was proposed to formulate the three-phase models for different DGs （include synchronous generator, induction generator, power electronic interface generator, doubly fed induction generator）. Comparisons between the proposed models and existing models were also presented in this paper and the models were proved to be right. The proposed approach is suitable for distributed generator unbalanced analysis and is also suitable to model flexible alternative current transmission （FACT） devices.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2014年第10期1509-1518,共10页
Proceedings of the CSEE
基金
国家重点基础研究发展计划项目(973项目)(2013CB228203)
教育部新世纪优秀人才支持计划项目(NCET-11-0281)
国家电网公司科技项目(KJ(2012))~~
关键词
主动配电网
分布式发电
三相模型
双馈电机
潮流计算
active distribution network
distributedgeneration
three-phase model
doubly fed generator
powerflow
