摘要
为了更高效、更便捷地获取电网特征值,提出一种基于离散时域模型(discrete time domain model,DTDM)的状态空间构建新方法,并给出稳定性判据。所提方法中元件能够被自然的线性化,每个求解单元里状态空间的构建简单高效。同时,所构建的状态空间能够一次性捕获更宽范围的信息且不受电气设备数学模型的限制,仅利用元件自身的DTDM与电网的连接拓扑便可得到系统完整的状态空间。所提方法对于特征值的计算简洁高效,能给出特征值的变化趋势,预测系统的稳定性变化。
To obtain the eigenvalue more efficiently and conveniently,a discrete time domain model(DTDM)based state space construction method is proposed for power grids,and the stability criterion of is presented.Compared with the traditional methods,the nonlinear components can be linearized naturally in the proposed method so as the construction of the power-grid state space is simple.Meanwhile,the DTDM based state space can capture a wider range of system information at one time and is not restricted by the model of electrical equipment.That is the whole state space of power grids can be obtained only by the DTDM of the components and the topology of the power grid.The calculation of the eigenvalue is simple and efficient,and it can give the trend of the eigenvalue and predict the stability of the power system.
作者
熊玮
张越
窦建中
江保锋
单连飞
XIONG Wei;ZHANG Yue;DOU Jianzhong;JIANG Baofeng;SHAN Lianfei(Central China Branch of State Grid Corporation,Wuhan 430077,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;Beijing KeDong Electric Power Control System Co.,Ltd.,Beijing 100192,China)
出处
《中国电力》
CSCD
北大核心
2022年第6期111-117,共7页
Electric Power
基金
国家电网有限公司华中分部科技项目(5214DK210004)
国家电网有限公司科技项目(5700-202028362A-0-0-00)。
关键词
离散时域模型
电网状态空间
特征值
稳定性
discrete time domain model
power-grid state space
eigenvalue
stability
