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1、论文220kV电网输电线路继电保护整定计算申请人：牟晓琴学科（专业）：电力系统及其自动化指导教师：刘新正2010年04月网络教育学院毕 业 设 计 (论 文) 任 务 书专业班级 0803 层次 本科 姓名 牟晓琴 学号 08017465010034 一、毕业设计（论文）题目:220kV电网输电线路继电保护整定计算二、毕业设计（论文）工作 2009年12月25日起至2010年04月06日止三、毕业设计（论文）基本要求：论文的总体结构应分为以下部分：题目、摘要、目录、绪论、正文、结论、参考文献和附录等几部分组成。论文应力求有作者自己的创见和观点，中心突出，层次分明，论述清楚，结构严谨，文字流畅。
2、论证有理有据，具有说服力。整篇论文字数层次不少于8000字，按照指导老师的要求进行写作。字迹要工整清洁。 指导教师： 刘新正 网络教育学院毕业设计(论文)考核评议书指导教师评语：。建议成绩： 指导教师签名： 2010年 月 日答辩小组意见：负责人签名 年 月 日答辩小组成员 毕业设计（论文）答辩委员会意见： 负责人签名： 年 月 日摘要论文题目：220kV电网输电线路继电保护整定计算学科（专业）：电力系统及其自动化申请人：牟晓琴指导教师：刘新正摘 要整定计算工作在电力系统继电保护中占有很重要的位置，这是因为保护装置的配置及使用正确与否直接关系到系统的安全运行和对用户供电的可靠性，同时还与电网的
3、经济指标、运行调度、设计调试等多方面工作有密切关系。本文详细介绍高压电网继电保护的整定和配置的原则，分析了系统的高频保护、相间距离保护、零序电流保护以及自动重合闸配置。首先，论文计算出了所给电力系统各元件的参数及序阻抗，并制定各序网图；其次，根据整定计算的要求选择规定的运行方式，确定短路点及短路类型，通过网络的合并、化简求出归算到短路点的各序综合阻抗，根据短路类型及电力系统故障分析的知识，求出短路点的总电流，按照网络结构，求出流过被整定保护装置的短路电流；再其次，基于上述计算结果，计算出各种继电保护装置的整定值，并对各保护进行了灵敏度校验，经过计算分析确定了合理的继电保护方案，绘制了继电保护配
4、置图；最后，编写了整定方案报告书，对整定结果进行了分析、评价，提出了可采取的对策等。关 键 词：高频保护，距离保护，零序电流保护，综合重合闸论文类型：应用研究Title: Relay Setting Calculation of 220kV Power Transmission Line Discipline (Professional): Power System and AutomationApplicant:Mou Xiaoqin Supervisor:Liu Xinzheng ABSTRACTThe calculation plays a great part in the elect
5、ric power system because the setting and use of protection have something with the security of system, the reliability of uses and have a close relationship with the economic settings, distribute, design of system. The article introduces the protection of EHV electric system and provides distance pr
6、otection, zero-sequence protection, high frequency protection and automatic equipment. Firstly, the parameters of the power system components and the sequence impedances were calculated , then impedance diagram was drawn including positive sequence, negative sequence and zero-sequence. Secondly, acc
7、ording to the demands of system, the reasonable way of operation was chosen, then the fault location and how the fault occurs were chosen, the complex impedance by simplifying the networks was calculated. According to the kinds of fault and the knowledge of the faults in system, the full current was
8、 got at fault location. Thirdly, According to the construction of network, the current flowing the protected equipment was calculated. Based on the results above , the figures of all kinds of relay protection were calculated and checking whether the sensitive is proper, the reasonable scheme was ana
9、lysed and the diagram of the setting of relay protection was drawn. Finally, the summary report of the setting calculation results was given, the calculations was evaluated and the available methods was proposed.KEY WORDS: high frequency protection, distance protection, zero-sequence protection, aut
10、omatic equipmentTYPE OF THESIS: applicationICONTENTS目 录摘 要I1 绪论11.1 课题的意义11.2 相关技术现状11.3 本文的主要工作22 短路电流计算及运行方式选择32.1电力系统各元件参数计算32.2 序网图制定52.3 短路电流计算63 220kV电网继电保护整定计算及配置方案153.1 电力系统继电保护整定计算的任务和要求153.2 220kV电网继电保护方式的选择原则153.3 初步选择保护及重合闸方案163.4 220kV电网继电保护整定计算173.4.1 相间距离保护的整定计算173.4.2 零序电流方向保护的整定计算24
11、3.4.3 高频保护的整定计算294 综合重合闸装置344.1综合重合闸与继电保护的联接配合344.2 综合重合闸的整定计算355 结 论38致 谢39参考文献40声 明41CONTENTSAbstractI1 Introduction11.1 The significance of the subject11.2 Status of related technology11.3 Main works of this thesis22 Short-circuit current calculation and operation mode selection32.1 Power system
12、parameters of various components32.2 Sequence network diagram to develop52.3 Short-circuit current calculation63 220kV power network relay setting calculation and configuration program153.1 Power system relay coordination tasks and requirements153.2 220kV power network relay protection mode selectio
13、n principle153.3 The initial choice to protect and re-closing program163.4 220kV power network relay setting calculation173.4.1 Phase distance protection setting calculation173.4.2 The direction of zero sequence current protection setting calculation243.4.3 Setting calculation of high frequency protection294 Integrated reclosing device344.1 Connection with integrated reclosing and protective relaying344.2 Integrated reclosing setting calculation35
