伊穆直流孤岛特性试验电磁暂态仿真分析  

Electromagnetic Transient Simulation and Analysis for Yimu HVDC Project Islanding System Commissioning

作　　者：王华伟[1] 韩民晓[1] 吴娅妮[2] 雷霄[2] 林少伯[2] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区100026 [2]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2017年第3期698-707,共10页Power System Technology

摘　　要：火电直流孤岛送出系统有效短路比和转动惯量小,孤岛送出系统承受扰动能力较弱,频率稳定问题突出,给含大量热力生产过程的火电直流孤岛运行方式决策带来了巨大的困难。建立了准确反映伊穆直流系统、火电机组实际特性的电磁暂态仿真模型,通过仿真分析,提出了伊穆直流孤岛试验条件和控制策略;对拟开展试验项目提供了操作建议并进行了详细仿真,为世界首次进行的火电直流孤岛运行特性试验方案制定和实施提供了坚实的工作支撑;现场试验结果验证了系统分析与电磁暂态模型的有效性,为开展后续研究工作奠定了基础,为未来大型火电基地的集中开发和远距离外送提供了技术依据。Because of small effective short circuit and inertia in thermal power HVDC island transmission system, disturbance resistance capability of relevant isolated transmission system is weak, causing serious frequency stability problem for decision-making process of islanding operation with large amount of heat production. This paper establishes an electromagnetic transient simulation model, accurately reflecting actual characteristics of Yimu HVDC system and thermal power units, and putting forward test conditions and Yimu HVDC islanding control strategy through simulation and analysis. Operation suggestions are provided for this pilot project. Simulation is carried out, providing a solid support for system commissioning of thermal power HVDC isolated island operation. Field test results verify validity of system analysis and the electromagnetic transient model, laying foundation for follow-up research works. It provides technical basis for future development of large scale thermal power base and long distance transmission.

关 键 词：火电直流孤岛运行 电磁暂态仿真 附加频率控制 一次调频 

分 类 号：TM85[电气工程—高电压与绝缘技术]