摘要
为了实现微电网安全持续供电,微电网潮流态势感知技术得到关注。随着随机性和间歇性分布式能源的快速发展,微电网稳定性面临的挑战比过去更加严峻。解决这个问题的关键是如何能在微电网电能质量出现异常情况之前采取行动,通过对微电网系统的感知、理解、预测以及利导来调节微电网保持稳定状态。提出一种采用先进变流器的微电网潮流态势感知方法。首先对微电网系统进行潮流计算,获得不同情形下相应的雅克比矩阵。再对引入负荷预测模型的微电网潮流雅克比矩阵进行奇异值分解,获得系统稳定情况。然后通过先进变流器提前预测选择相应模式保持系统稳定,以实现微电网态势感知以及最优模式运行,为保证微电网稳定提供了更多的方法和手段。
In order to realize the normal and continuous power supply,the awareness of power flow in microgrid region is paid attention.With the rapid development of distributed energy sources,the challenge of microgrid stability is more severe than before.The key to solve this problem is how to take action before the appearance of the abnormal situation and lead to adjust the microgrid to maintain a steady state based on the microgrid system awareness,perception and prediction.This paper proposes a method of microgrid situation awareness using advanced microgrid converter.It takes the microgrid system for power flow calculation,obtaining the corresponding Jacobian matrix under different conditions.Singular value decomposition of microgrid power flow Jacobian matrix of the introduced load forecasting model is made,obtaining the system stability condition.It selects the appropriate operation mode of advanced inverter and maintains system stability by early prediction to achieve microgrid situation awareness and the optimal operation mode,providing more ways and means for microgrid stability.
作者
肖祥香
段斌
陈明杰
彭寒梅
XIAO Xiangxiang;DUAN Bin;CHEN Mingjie;PENG Hanmei(College of Information Engineering,Xiangtan University,Xiangtan 411100,China;Cooperative Innovation Center of Wind Power Equipment and Energy Conversion,Xiangtan 411100,China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2018年第20期94-100,共7页
Power System Protection and Control
基金
国家自然科学基金项目资助(61379063)~~
关键词
微电网
态势感知
先进变流器
雅克比矩阵
奇异值分解
microgrid
situation awareness
advanced inverter
Jacobian matrix
singular value decomposition
