应用于无人值守发电厂站的视频监控系统设计

发布时间：2018-03-07 02:08

  本文选题：视频监控系统　切入点：IP-SAN网络存储技术　出处：《华南理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：本文针对广州蓄能水电厂视频监控系统展开研究与设计。本文设计的应用于无人值守发电厂站的视频监控系统,是根据视频监控的功能需求,按照“分层部署,逐层汇集”的设计原则,将系统结构划分成主站系统和站端系统。主站系统作为整个系统的集中管理平台,解决了远程监控、分布存储集中管理、报警提醒、多系统联动及系统管理等问题,实现了多功能、多业务集成的目标。站端系统作为前端监控设备的汇集点,就近管理站内前端设备,解决了集中存储的瓶颈问题,实现了系统的分布式结构和海量前端设备分区、分流管理,提高了系统的可靠性。由于视频监控系统在电力行业中具有重要作用,广州蓄能水电厂对系统的稳定性、实时性、存储容量、供电可靠性等性能指标提出了很高要求。根据电厂监控范围广、现场环境复杂、数据存储量巨大、生产场所电磁干扰大的现状,本系统在设计和开发过程中需要重点解决存储、传输和供电等问题。在系统存储方面,本文采用基于iSCSI通信协议的IP-SAN网络存储技术,提供储备资源分配与管理,将现有的通信网与存储网结合实现高速率传输和远距离数据共享;采用基于模块化设计的SCSI-SATA磁盘阵列技术解决海量数据存储和空间扩展问题;通过合理的组网方式设计实现远程容灾备份,提高数据安全性。在系统传输和供电方面,根据施工场所现状,本文提供了不同的选择方式:长距离使用光纤和收发器实现视频信号传输,解决传输速率和电磁干扰问题;短距离使用普通双绞线完成信号传输及控制,同时利用POE供电功能,降低施工难度;主站等设备集中的地方采用UPS不间断电源集中供电,前端分散的设备采用POE供电或直接市电供电,提高系统供电稳定性,减少系统建设和维护成本。通过对广州蓄能水电厂视频监控系统的工程实践和一年的试运行验证,本系统运行稳定,年可用率≥99.9%,90%以上实时视频画面调出响应时间≤2秒,视频控制切换响应时间≤2秒,前端设备控制延时≤2秒,数据存储时间≥30天,信息处理准确率达100%,并发访问用户数可达200人以上。系统具备高清视频实时预览、远程控制、环境信息监测与报警、电子地图、多系统联动和完善的系统管理等功能。经过运行效果评价,本系统达到了设计目标,实现了通过现有的电力通信网对无人值守发电厂站进行长期有效的动态监控管理,提高了电厂运行和维护的安全可靠性,为实现电网的可视化监控和调度,建立无人值守发电厂站的远程维护、安全生产集中管控模式提供了基础。
[Abstract]:This paper focuses on the research and design of video monitoring system for Guangzhou storage hydropower plant. The video monitoring system designed in this paper is based on the functional requirements of video monitoring, according to the "layered deployment," The system structure is divided into master station system and station end system. As the centralized management platform of the whole system, the master station system solves the problems of remote monitoring, distributed storage and centralized management, warning and warning. The multi-system linkage and system management have realized the goal of multi-function and multi-service integration. As the gathering point of front-end monitoring equipment, the station end system has solved the bottleneck problem of centralized storage by approaching the front-end equipment in the management station. The distributed structure of the system, the partition of massive front-end equipment, the distribution management and the reliability of the system are realized. Because the video surveillance system plays an important role in the electric power industry, the stability and real-time performance of the power plant in Guangzhou are analyzed. The storage capacity, power supply reliability and other performance indexes are very high. According to the current situation of wide monitoring scope, complex field environment, huge data storage and large electromagnetic interference in production sites, In the design and development of the system, it is necessary to solve the problems of storage, transmission and power supply. In the aspect of system storage, this paper adopts the IP-SAN network storage technology based on iSCSI communication protocol to provide the allocation and management of reserve resources. The existing communication network and storage network are combined to realize high-speed transmission and long-distance data sharing, and the SCSI-SATA disk array technology based on modular design is used to solve the problem of massive data storage and spatial expansion. The remote disaster recovery backup is realized by reasonable networking method, and the data security is improved. In the aspect of system transmission and power supply, according to the present situation of the construction place, This paper provides different options: long distance use of optical fiber and transceiver to achieve video signal transmission, to solve the transmission rate and electromagnetic interference problems, short distance using ordinary twisted pair to complete signal transmission and control, while using POE power supply function, In order to improve the stability of power supply system, UPS uninterruptible power supply is used in the place where the main station and other equipments are centralized, and the POE power supply or direct electricity supply is used in the front end scattered equipment, so as to improve the power supply stability of the system. The system construction and maintenance costs are reduced. Through the engineering practice of the video monitoring system of Guangzhou Pumped-storage Hydropower Plant and the test operation for one year, the system is running stably, the annual availability rate 鈮，

本文编号：1577470