离散时域框架下的电网状态空间构建及应用

doi:10.11930/j.issn.1004-9649.202111085

中国电力 ›› 2022, Vol. 55 ›› Issue (6): 111-117.DOI: 10.11930/j.issn.1004-9649.202111085

离散时域框架下的电网状态空间构建及应用

熊玮¹, 张越^2,3, 窦建中¹, 江保锋¹, 单连飞^2,3

1. 国家电网公司华中分部，湖北武汉　430077;
2. 南瑞集团有限公司（国网电力科学研究院有限公司），江苏南京　211106;
3. 北京科东电力控制系统有限责任公司，北京　100192

收稿日期:2021-11-18 修回日期:2022-04-26 出版日期:2022-06-28 发布日期:2022-06-18
作者简介:熊玮（1986—），男，高级工程师，从事调度运行控制、源网荷储、电力市场及大电网人工智能调控技术研究，E-mail：xiongw86@126.com;张越（1989—），男，通信作者，工程师，从事电力系统自动化控制与应用技术研究，E-mail：zhangyue3655@163.com
基金资助:
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）。

Construction and Application of Discrete-Time-Domain Framework -based Power-Grid State Space

XIONG Wei¹, ZHANG Yue^2,3, DOU Jianzhong¹, JIANG Baofeng¹, SHAN Lianfei^2,3

1. Central China Branch of State Grid Corporation, Wuhan 430077, China;
2. NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China;
3. Beijing KeDong Electric Power Control System Co., Ltd., Beijing 100192, China

Received:2021-11-18 Revised:2022-04-26 Online:2022-06-28 Published:2022-06-18
Supported by:
This work is supported by Science & Technology Project of Central China Branch of SGCC (No.5214DK210004) and Science & Technology Project of SGCC (No.5700-202028362A-0-0-00).

摘要/Abstract

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。

关键词: 离散时域模型, 电网状态空间, 特征值, 稳定性

Abstract: 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.

Key words: discrete time domain model, power-grid state space, eigenvalue, stability

熊玮, 张越, 窦建中, 江保锋, 单连飞. 离散时域框架下的电网状态空间构建及应用[J]. 中国电力, 2022, 55(6): 111-117.

XIONG Wei, ZHANG Yue, DOU Jianzhong, JIANG Baofeng, SHAN Lianfei. Construction and Application of Discrete-Time-Domain Framework -based Power-Grid State Space[J]. Electric Power, 2022, 55(6): 111-117.

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离散时域框架下的电网状态空间构建及应用

Construction and Application of Discrete-Time-Domain Framework -based Power-Grid State Space

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离散时域框架下的电网状态空间构建及应用

Construction and Application of Discrete-Time-Domain Framework -based Power-Grid State Space

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