信息物理融合视角下的电流纵差保护可靠性分析

doi:10.11930/j.issn.1004-9649.201807084

中国电力 ›› 2019, Vol. 52 ›› Issue (1): 25-31.DOI: 10.11930/j.issn.1004-9649.201807084

• 信息物理电力系统(CPPS)专栏 • 上一篇下一篇

信息物理融合视角下的电流纵差保护可靠性分析

李满礼^1,2,3, 陈学通^1,2,3, 刘东洋^1,2,3, 丁卫东^1,2,3

1. 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;
2. 国电南瑞科技股份有限公司, 江苏南京 211106;
3. 智能电网保护和运行控制国家重点实验室, 江苏南京 211106

收稿日期:2018-07-30 修回日期:2018-11-12 出版日期:2019-01-05 发布日期:2019-01-14
作者简介:李满礼(1970-),男,通信作者,硕士,工程师,从事电力信息物理系统研究,E-mail:limanli@sgepri.sgcc.com.cn;陈学通(1991-),男,硕士,从事电力系统安全稳定分析研究,E-mail:chenxuetong@sgepri.sgcc.com.cn
基金资助:
国家重点研发计划资助项目（电网信息物理系统分析与控制的基础理论与方法，2017YFB0903000）；国家电网公司总部科技项目（针对网络攻击的电网信息物理系统协同运行态势感知与主动防御方法研究）；国家自然科学基金重点资助项目（网络攻击下智能电网信息物理安全理论与主动防御技术研究，61833008）。

Reliability Analysis of the Current Differential Protection with Integration of Cyber and Physical System

LI Manli^1,2,3, CHEN Xuetong^1,2,3, LIU Dongyang^1,2,3, DING Weidong^1,2,3

1. NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China;
2. NARI Technology Co. Ltd., Nanjing 211106, China;
3. State Key Laboratory of Smart Grid Protection and Control, Nanjing 211106, China

Received:2018-07-30 Revised:2018-11-12 Online:2019-01-05 Published:2019-01-14
Supported by:
This work is supported by the National Key Research and Development Program of China (Basic Theories and Methods of Analysis and Control of the Cyber Physical Systems for Power Grid, No. 2017YFB0903000), Science and Technology Project of State Grid Corporation of China (Research on Cooperative Situation Awareness and Active Defense Method of Cyber Physical Power System for Cyber Attack), National Natural Science Foundation of China(Research on Cyber-Physical Security Theories and Active Defense Technologies for Smart Grids against Cyber-Attacks, No. 61833008).

摘要/Abstract

摘要： 现代电网已经具备信息-物理紧密融合的特征，电流差动保护是信息物理紧密耦合的典型应用，因此，有必要从信息物理融合的视角研究其可靠性。从物理-量测-通信-决策的完整闭环控制过程出发，分析线路电流、互感器测量误差、通信延时及保护判据（分析决策）等信息物理因素对电流差动保护的综合影响，提出电力信息物理系统视角下电流差动保护业务的误动概率模型。然后，通过仿真算例验证了模型的合理性，并分析了影响电流差动保护误动的关键因素。

关键词: 信息物理系统, 延时, 信息物理电力系统, 差动保护, 可靠性

Abstract: Modern power system is developing into a cyber physical power system (CPPS). The current differential protection is a typical application with ICT and physical function tightly coupled. So it is necessary to study its reliability from the perspective of CPPS. On the basis of the closed-loop control process of physical-measurement-communication-decision making, the paper analyzes the integrated effects of cyber and physical factors, such as line current, measurement error of CT, communication delay and protection criteria, on the current differential protection, and proposes the mis-operation probability model of the current differential protection. On that basis, a simulation is performed to verify the model, and the key factors affecting the reliability are analyzed.

Key words: cyber physical system (CPS), communication delay, cyber physical power system (CPPS), differential protection, reliability

中图分类号:

TM732

李满礼, 陈学通, 刘东洋, 丁卫东. 信息物理融合视角下的电流纵差保护可靠性分析[J]. 中国电力, 2019, 52(1): 25-31.

LI Manli, CHEN Xuetong, LIU Dongyang, DING Weidong. Reliability Analysis of the Current Differential Protection with Integration of Cyber and Physical System[J]. Electric Power, 2019, 52(1): 25-31.

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信息物理融合视角下的电流纵差保护可靠性分析

Reliability Analysis of the Current Differential Protection with Integration of Cyber and Physical System

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信息物理融合视角下的电流纵差保护可靠性分析

Reliability Analysis of the Current Differential Protection with Integration of Cyber and Physical System

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