摘要
直流功率调制是一种具有巨大潜力的电力系统控制措施。当交直流系统受到大扰动时,利用直流系统的短时过载能力,快速调制直流系统注入交流系统的有功功率,弥补暂态过程中送、受端的有功功率不平衡,提高系统的暂态功角稳定和频率稳定。为满足功率调制工程方面的需求,设计了辅助功率/频率控制系统,详述了其协调控制策略及运行方式、具体结构。通过一个多馈入直流输电系统仿真分析表明,此多系统能在交直流系统故障情况下快速实现多回直流线路间的功率协调控制,对系统的暂态功角和频率稳定有显著的效果。
DC power modulation is a great potential control measure in the power system.When such system is under a large disturbance,the active power that is injected from DC to AC system can be coordinated swiftly because of the short-time overload of DC system,so that the unbalance of active power of both the sending and receiving end can be adjusted,and the power angle and frequency transient stability can be enhanced.According to the requirements of power modulation,auxiliary power/frequency control multi-agent system was designed in this paper.The operating modes and the structure of this system were illustrated as well.Finally,the simulation of a multi-in-feed DC power system shows that the power coordination control of multi-loop DC system can be archived rapidly by this system under the situation of AC-DC system faults,and the improvement of power angle / frequency transient stability of the system was obvious.
出处
《华东电力》
北大核心
2011年第6期885-889,共5页
East China Electric Power
基金
国家自然科学基金项目(51037003)
"十一五"国家科技支撑计划资助项目(2008BAA13B01)~~
