Modeling Analysis and Control Research Framework of Cyber Physical Power Systems
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摘要: 传统的电力系统研究与信息系统研究在理论和方法上基本都是割裂的,故在现有的理论和方法框架下难以系统而深入地分析信息系统对电力系统分析与控制的影响。实现智能电网的关键之一就在于怎样将前沿的计算、通信、传感技术与电力系统紧密而有机地结合起来,而信息物理融合系统(CPS)的目标正是将物理系统和信息系统融合为新型工业系统。在此背景下,将CPS概念与电力系统特点相结合,提出电力CPS架构;利用微分代数方程组、有穷自动机、随机过程、排队论等数学工具,建立其稳态与动态模型,阐述相应的分析方法,并进一步提出电力CPS可靠性和安全性研究方向。最后,基于网络延时和丢失补偿提出了多种控制方法相结合的混合控制策略。Abstract: To implement the objective of smart grids,it is essential to introduce the state-of-the-art computing,communication and sensing technologies.Traditionally,the theoretical foundation and methodologies of power systems and information systems are independent.Thus,the existing power system analysis and control methods cannot adequately take into account the impacts of the information system.The cyber physical system（CPS） represents a new research area with a focus on integrating physical and information systems so as to build a new and powerful industrial system.Based on CPS and the characteristics of power systems,the concept of a cyber physical power system（CPPS） framework is presented.Several mathematical tools including the differential and algebraic equation set,finite automation,stochastic process and queueing theory are introduced to formulate the steady-state and dynamic models of CPPS.The steady-state and dynamic analysis of information systems is then introduced,and on this basis,the research direction for reliability and security of CPPS is developed.The networked control of CPPS is finally discussed,and new methods based on the delay and data loss compensation are proposed.
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Keywords:
- smart grid /
- cyber physical system /
- cyber physical power system /
- mathematical model /
- reliability /
- security
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