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山东农业大学
毕 业 论 文
电力系统继电保护故障信 息采集及处理系统的研究
院 部 机械与电子工程学院 专业班级 电气工程及其自动化班 届 次 学生姓名 学 号 指导教师 年月日
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目 录
摘要................................................................................................................................ I Abstract ......................................................................................................................... II 引言................................................................................................................................ 1 1 研究内容.................................................................................................................... 2
1.1 故障信息分析处理系统研究的意义.............................................................. 2 1.2 故障信息采集及对处理系统的构想.............................................................. 3 1.3 国内外研究现状.............................................................................................. 3 1.4 本论文主要工作.............................................................................................. 4 2 故障信息采集............................................................................................................ 6
2.1采集方式........................................................................................................... 6 2.2 监测采集.......................................................................................................... 6 2.3 系统管理采集.................................................................................................. 6 3 故障信息处理系统.................................................................................................... 8
3.1 系统总体结构.................................................................................................. 8 3.2子站系统功能与结构....................................................................................... 9
3.2.1 子站的功能............................................................................................ 9 3.2.2 子站系统结构........................................................................................ 9 3.3 主站系统的功能和构成................................................................................ 10
3.3.1 主站系统功能...................................................................................... 10 3.3.2 主站系统结构...................................................................................... 11 3.3.3 继电保护出现故障时的处理系统...................................................... 12
4 基于粗糙集理论及故障信息网故障诊断.............................................................. 14
4.1 粗糙集理论.................................................................................................... 14 4.2 信息系统和决策表........................................................................................ 14
4.2.1 不可辨别关系...................................................................................... 15 4.3 故障信息网的信息分析处理........................................................................ 16 5 基于Matlab状态流和故障信息网的保护动作行为分析 .................................... 18
5.1 Matlab仿真 .................................................................................................... 18 5.2 保护装置在Matlab下的仿真建模 .............................................................. 18 5.3 距离保护装置的动作行为分析实例............................................................ 19 6 结论.......................................................................................................................... 23 参考文献...................................................................................................................... 24 致谢.............................................................................................................................. 24
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Contents
Abstract ......................................................................................................................... II Introduction .................................................................................................................... 1 1 The research content ................................................................................................... 2
1.1 Analysis of fault information processing system research meaning ................. 2 1.2 The idea of fault information acquisition and processing system ..................... 3 1.3 The research status at home and abroad ........................................................... 3 1.4 This thesis mainly work .................................................................................... 4 2 Fault information collection ........................................................................................ 6
2.1 Acquisition methods ......................................................................................... 6 2.2 Monitor of ......................................................................................................... 6 2.3 System management to collect .......................................................................... 6 3 Fault information processing system .......................................................................... 8
3.1 The system overall structure ............................................................................. 8 3.2 Sub station system function and structure ......................................................... 9
3.2.1 The function of the sub station ................................................................ 9 3.2.2 Sub station system structure.................................................................... 9 3.3 The function of master station system and composition ................................. 10
3.3.1 The main system function ..................................................................... 10 3.3.2 The main system structure .................................................................... 11 3.3.3 Processing system of relay protection failure ....................................... 12
4 Fault diagnosis and fault information network based on rough set theory ............... 14
4.1 Rough set theory ............................................................................................. 14 4.2 Information systems and decision table .......................................................... 14
4.2.1 Invisible relationship ............................................................................. 15 4.3 Fault information network information analysis and processing .................... 16 5 State flow based on Matlab and fault protection of information network behavior analysis ......................................................................................................................... 18
5.1 The Matlab simulation .................................................................................... 18 5.2 Protection under the Matlab simulation modeling .......................................... 18 5.3 Distance protection action analysis examples................................................. 19 6 Conclusion ................................................................................................................ 23 References .................................................................................................................... 24 Acknowledgement ....................................................................................................... 24
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电力系统继电保护故障信息采集及处理系统的研究
（山东农业大学 机械与电子工程学院）
摘要：电力系统保证了国民经济的发展，提高了人民的生活质量，但是当发生短路、断线等故障时，用户用电就无法得到保证，甚至给经济发展带来严重影响。继电保护应用而生，迅速有选择的排除故障，保证系统的正常运行。当继电保护出现误动作时，容易扩大事故，带来更严重的后果。单方面的保护已经跟不上故障的分析与处理了，故障信息采集与处理系统的研究势在必得，致力于提高继电保护的可靠性与灵敏性。本文表述了电力系统出现故障时的采集技术以及相应的处理方法，以使继电保护能够更好的为电力系统提供帮助。 关键词：继电保护；故障信息采集；处理系统
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