煤矿供电系统面保护技术的研究与实现毕业论文 (2)

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1、 论文题目：煤矿供电系统面保护技术的研究与实现 摘 要 煤矿生产各个环节的运行和保护源于煤矿供电系统，其供电的可靠性直接影响着煤 矿的安全生产，因此对煤矿供电系统继电保护提出了更高的要求。 传统煤矿供电系统继电保护动作的执行与否是由测量元件获取的结果与整定值比较 而得来，判别故障的方法单一，有失准确性，极易造成保护误动、拒动、越级跳闸等事 故，造成供电系统的大面积停电，降低了煤矿的生产效率。本设计采用煤矿供电系统面 保护原理，在故障处理过程中综合供电系统的相关信息，从而快速准确地作出判断，隔 离故障，有效地减少了煤矿供电系统大面积停电事故的发生。 本设计由测控单元、现场总线和上位机监控系统三部

2、分组成，完成供电系统故障的 分析判断、 处理， 实现系统遥信、 遥测、 遥控、 遥调等任务。 测控单元采用了以TMS320F2812 为核心的控制芯片， 完成开关运行状态、 运行参数、 故障检测等任务； 现场总线采用CAN 总线控制技术，完成上位机和测控单元之间的通讯功能；上位机监控系统采用力控组态 软件为平台，完成供电系统的信息监测、系统控制逻辑判断，遥控、遥调等功能。 煤矿供电系统面保护技术的应用，可有效地提高供电系统继电保护的选择性、快速 性、灵敏性、可靠性，为煤矿安全生产提供安全、可靠的技术支持。 关键字：面保护，现场总线，测控单元，上位机监控 Subject: Research an

3、d Implementation of the supply system about area-protection technology in underground coal mines Specialty: Electrical Engineering and Automation Name: Wang Chi (Signature) Instructor: Lu Jianqiu (Signature) ABSTRACT Operation and protection of each link of coal mine are based on the power supply in

4、 coal mine, the reliability of power supply directly affects the coal mines safety, therefore, putting forward a higher requirement on relay protection of power supply in mine. The action of traditional protection in coal mine depends on the result of comparing with measured and setting value. This

5、method is sample and may be not accurate, it easily cause misoperation, refusing to work, grading trip and other accidents, which will result in a big electricity cut and affect the efficiency of coal production. The design apply the principle of protection based on communication, when deal with the

6、 power failure, it will acquire related information in system, then make a quick and accurate action to insulate fault and reduce the accident of power failure in large area efficiently. This design consists of measurement and control unit, field-bus and monitoring system based host machines, which is used to analysis, judge, process system fault and achieves telemetry, remote control, remote adjustment and other tasks. The measurement and control unit uses T