【作者】 张文雄；

【导师】 王永华； 刘凤雏；

【作者基本信息】 广东工业大学 ， 控制工程（专业学位）， 2020， 硕士

【摘要】 随着越来越多的变电站建设和近几年主网专业化吸收了区县局的调管的变电站,主网调度自动化系统接入了大量的告警信号。规模日益剧增的电力调度系统迫使调度监控人员必须快速、精确且全面地定位电力系统的具体状况,分析系统发出异常告警的具体位置和原因,对电力系统运行中突发的不同异常情况匹配出相应的解决方案。因此,根据南方电网公司建设的一体化电网运行智能系统要求,在原来能量管理系统(Energy Management System,EMS)的基础上又新设计了智能告警系统。智能告警系统从海量信息中收索出关键告警信息,并关联分析,得出有价值的结论。为调度监控人员提供分析推理合成后的告警信息和辅助决策的建议,提高了电网事故事件分析的准确度,加快了电网事故事件分析和处理的速度,为供电局的复电人员节约了宝贵时间。本文基于电力调度E8000能量管理系统框架,设计了一个适合在接入了大量告警信号后运行的智能告警系统。该系统接收到变电站上送的告警原始信号,经过信息预处理模块处理,数字量信号通过量测类型的关键字和优先级匹配转换成基准信号,再提取相关的基准信号与告警规则匹配,推理机根据知识库的告警规则进行单一推理或者关联推理,最终生成智能告警信息;模拟量信号则通过告警规则匹配,推理机根据知识库的告警规则进行量测推理,生成智能告警信息。本文首先对韶关电网传统的告警系统做了介绍,以此引出智能告警系统的概念,并介绍了智能告警的整体框架设计,包括智能告警系统信号处理的整个流程,整体架构的构成(包括三个关键组成部分信息预处理、推理机和知识库),和相关的一些程序部署。接着通过数据库编辑工具qtdbui和联测类型关联工具ialmtype完成信息预处理的过程。最后通过规则库编辑工具ialmrule完成知识库的规则入库,并着重刻画了系统的推理模型,并对知识库里的单一推理、关联推理和量测推理进行了具体的分析。应用评估和运行分析表明,该智能告警系统总体运行状况良好,高度贴合韶关电网调度监控的使用,能大量减少告警信号量,提供的事故辅助决策,提升调度员的监控效率,加快的复电的时间,减少停电对用户的影响,创造了良好的经济和安全效益。更多还原

【Abstract】 With more and more transformer substations being built and the transmission network absorbing substations managed by other districts and counties in recent years,power dispatching automation system has received a lot of alarm signals.In the modern power dispatching system,the dispatcher needs to fully grasp the real situation of the power system quickly and accurately,analyze the specific location and reason when the system raises an alarm and develop solutions to different abnormal problems during operation.Hence,Shaoguan Power Supply Bureau has designed a new intelligent alarm system based on the Energy Management System(EMS)according to the requirement of building an integral power grid smart system.Intelligent alarm system retrieves the key alarm signals from mass information.Then draws meaningful conclusions through association analysis.This system provides dispatchers with processed alarm signals and suggestion of decision-making support.The accuracy of analysing power grid accident is improved.It speeds up the analysis and processing of power grid accident.It is saving the precious time for the staff restoring power service.Based on the framework of Power Dispatch E8000 Energy Management System,this paper has designed an intelligent alarm system which is suitable for processing a large number of alarm signals.This system receives the original alarm signals from transformer substations.Through the process of the information pretreatment module,digital signals convert into reference signals by matching the keyword and priority of the measurement type.Then the relevant reference signals will match the alarm rules.The inference engines will run single reasoning or association reasoning according to the alarm rules in the knowledge database and generate intelligent alarm signals.In addition,analog signals will match the alarm rules.The inference engines also run measurement reasoning according to the alarm rules in the knowledge database and generate intelligent alarm signals.At first,this paper briefly describes the original alarm system in Shaoguan and introduces the concept of intelligent alarm system.Then this paper introduces the overall architecture of intelligent alarm system,including the signal procession,detail of architecture and program.During the process of the information pretreatment,QTDBUI and ialmtype are needed.QTDBUI is used for editing database and ialmtype is a tool for associating test type.Then using the editing tool called ialmrule,the rules will be inported into rules base.A complete inference model of intelligent alarm has been presented.The single reasoning,association reasoning and measurement reasoning in the knowledge database also has been analyzed.The application evaluation and operation analysis show that this intelligent alarm system is running well.It fits the demands of power dispatch in Shaoguan power grid.The number of alarm signals will be decreased a lot.It provides dispatchers with suggestion of decisionmaking support and improves efficiency in monitoring.This system can also speed up the power restoration and reduce the impact of outage.It will create good safety and economic benefit.更多还原