首页> 外文会议>CICED 2012;China International Conference on Electricity Distribution >A novel frequency control strategy of micro-source based on the secondary frequency regulation of power system
【24h】

A novel frequency control strategy of micro-source based on the secondary frequency regulation of power system

机译:基于电力系统二次调频的微源频率控制新策略

获取原文
获取原文并翻译 | 示例

摘要

Because of small capacity and low inertia of the inverter based micro-source, loads changing have great impact on the frequency and voltage of islanded micro-grid. A novel frequency control strategy of micro-source based on the secondary frequency regulation of power system is proposed in this paper. Traditional droop control strategy of micro-grid can't guarantee the frequency of micro-grid operate at rated state when loads change. Besides the P-f droop control strategy, the proposed frequency control strategy introduces the proportional-integral (PI) control into control flow. The process is a no-error adjustment, which is similar to the secondary frequency regulation of power system. Additionally in order to overcome the disadvantage of low inertia of micro-source and micro-grid, a first-order inertia link which imitates the motion equation of the rotor of synchronous generator is added to the proposed frequency control strategy. So the stability of frequency of micro-grid is greatly improved. The typical operation states of micro-grid such as loads change, loads shock, the random loads fluctuation in islanded mode and switch of operation modes are simulated based on MATLAB/Simulink. Simulation results verify the correctness and validity of the proposed frequency control
机译:由于基于逆变器的微电源的容量小且惯性低,因此负载变化对孤岛微电网的频率和电压有很大影响。提出了一种基于电力系统二次调频的微源频率控制策略。当负载变化时,传统的微电网下垂控制策略不能保证微电网的频率在额定状态下运行。除了P-f下垂控制策略外,所提出的频率控制策略还将比例积分(PI)控制引入控制流。此过程是无错误的调整,类似于电力系统的二次频率调节。另外,为了克服微源和微电网惯性低的缺点,在拟议的频率控制策略中增加了模仿惯性发电机转子运动方程的一阶惯性链。因此大大提高了微电网频率的稳定性。基于MATLAB / Simulink,模拟了微电网的典型运行状态,如负荷变化,负荷冲击,孤岛模式下的随机负荷波动以及运行模式的切换。仿真结果验证了所提出的频率控制的正确性和有效性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号