中压配电网机线路保护原理分析程序设计.doc

毕 业 设 计 [论 文] 题 目：中压配电网微机线路保护原理分析程序设计 学 院： 电气与信息工程学院 专 业： 电气工程及其自动化 姓 名： 学 号： 指导老师： 刘娜 完成时间： 2013.5.29 摘要 本次毕业设计以10KV馈线为例，介绍了中压配电网线路的微机保护，并进行了相关的原理分析和程序设计。同时根据继电保护的配置原理，对所选择的保护进行整定和灵敏性校验，确定方案中的保护。 设计分为五个章节。第一章为设计的基础，主要介绍了微机保护的形成、发展、装置特点及与传统继电保护装置的对比；第二章为微机保护的硬件结构分析，包括数据采集系统、开关量等，并对微型机主系统进行了简要的介绍；第三章为微机保护的算法分析；第四章是保护方案的选择（电流保护，自动重合闸），包括整定计算及灵敏性校验；第五章是流程图及程序设计，程序的优化等。 关键词：中压配电网、电流保护、微机保护、算法、程序设计  Abstract The graduation design with 10 kv feeder as an example, introduces the microcomputer of medium voltage distribution network line protection, and has carried on the related theory analysis and program design. According to the principle of the relay protection configuration at the same time, the choice of protection setting and sensitivity check, determine the scheme of protection. Design is divided into five chapters. First chapter for the design of foundation, mainly introduces the formation and development of microcomputer protection, and device characteristics and with the contrast of traditional relay protection device; Chapter 2 as the hardware structure of the microcomputer protection analysis, including the amount of data acquisition system, switch, etc., and the miniature machine Lord system was briefly introduced; The third chapter for the microcomputer protection algorithm analysis; The fourth chapter is to protect the scheme (current protection, automatic reclosing), including setting calculation and sensitivity calibration; Chapter v is the flow chart and program design, program optimization, etc. Keywords: medium voltage distribution network, current protection，microcomputer protection, algorithm,program designing 目录 摘要 I Abstract II 目录 III 1.绪论 1 1.1微机保护的概述 1 1.2微机保护与传统继电保护的对比分析 2