逆变型电源控制策略对其故障暂态的影响分析  

Analysis of the Effect of Control Strategy on the Fault Transient Characteristics of Inverter-based Distributed Generators

作　　者：李斌[1] 张慧颖[1] 段志田[2] 林蒙[2] 

机构地区：[1]天津大学智能电网教育部重点实验室,天津300072 [2]天津市电力公司,天津300072

出　　处：《电力系统及其自动化学报》2014年第12期1-7,27,共8页Proceedings of the CSU-EPSA

基　　金：国家高技术研究发展计划(863计划)项目(2011AA05A106);国家自然科学基金项目(51261130473);教育部新世纪优秀人才支持计划(NCET-11-0367)

摘　　要：当电力系统发生扰动时,并网逆变型分布式电源受控于自身控制器经历故障暂态过程重新达到稳定输出。为了研究控制策略对并网逆变型分布式电源故障暂态特征的影响,首先建立了并网逆变电源的详细模型;在此基础上,详细分析了控制器控制参数对逆变电源暂态响应的影响;针对对称性故障和非对称性故障情况,对逆变电源的故障暂态特征进行深入的分析,并通过仿真研究,验证了上述理论分析的正确性,研究成果对分布式电源接入电网后保护控制系统的分析研究提供了理论基础。When the power system disturbances occur, inverter-based distributed generators （IBDG） will adjust them- selves through a series of operation to return to a stable state with the control of its own controller. In order to study the impact of the control strategy on the fault transient characteristics, a concrete model was constructed for the inverter control strategy. On the basis of this model, the thorough analysis on the impact of the control parameters on the fault transient characteristics of IBDG was carried on. Then in-depth analysis on the fault transient characteristics of IBDG was performed respectively in the cases of symmetry and asymmetry fault. Furthermore, simulation analysis is built up on the response of IBDG, and the correctness of the theoretical analysis is verified by simulation results. The analysis will lay a theoretical basis for the protection of the grid with distributed generation.

关 键 词：分布式电源 逆变 恒功率控制 故障暂态 对称性故障 非对称性故障 

分 类 号：TM72[电气工程—电力系统及自动化]