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如果华东,福建电网互联,福建水电在联合电网中的调峰作用将取决于水电在系统中的运行方式,而不仅限于送出电量的多少。联网还可以使大量潜在的联网效益得以发挥。 相似文献
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如果华东、福建电网互联,福建水电在联合电网中的调峰作用将取决于水电在系统中的运行方式,而不仅限于送出电量的多少。联网还可以使大量潜在的联网效益得以发挥。 相似文献
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当今各种社会制度不同的国家,都在不断地扩大电力系统的规模。有的电力系统,形成多国电网,这说明了电力系统互联的优越性。水利电力部昆明勘测设计院提出的“云南网和华南网联网效益研究报告”,从联网的稳定性、可靠性、错峰、水文补偿、综合经济效益等五方面论证了云南电网与华南电网联网的必要性。作为一个电力系统工 相似文献
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本文简略介绍广西能源、电网现状、水电开发布局和广东缺电情况,分析广西电网“西电东送”的可能性,汛期广西向广东输送季节性电能的几种供电方式,并揭示1993年天生桥至广州500kV输电线路建成实现“西电东送”和省区联网的巨大效益,以及联网互补互济的潜在能力。 相似文献
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中国水利教育培训网基于现代互联网和E—Learning技术,遵循国际标准规范,实现网上授课、在线学习、自主考试、跟踪管理,同时具有发布培训政策、公布培训资源、推荐培训课程、介绍培训机构、组织学员论坛等多种功能,有广泛的连接性、高度的交互性和使用的灵活性.可为广大水利职工提供高效的网上学习环境。 相似文献
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通信传输网络作为智慧滇中引水工程各项业务开展的基础网,对于提升工程智慧化运行管理起到基础性支撑作用。针对常见通讯系统配置存在的诸多局限,提出基于光业务单元(OSU)的光传送网络(OTN)技术构建引调水工程的通信传输网络,以智慧滇中引水工程传输网络为研究对象构建了滇中引水通信传输系统。从三网融合、接口类型、站点、组网方式、业务承载、网络保护、对接方案、智慧管理8个方面全面系统地对基于OSU的OTN技术在滇中引水工程进行部署。该网络技术可有效解决采用传统技术的传输网络存在的承载小颗粒业务复杂、业务映射层级过多引发的时延较高等问题,为智慧滇中引水工程构建安全实用、智慧高效的通信传输网络提供了可行策略,也为引调水工程的智慧化传输网络建设提供了新的方法和思路。研究结果对构建高速、灵活、智能、安全、面向未来的智慧滇中引水工程传输网络实践工作具有指导意义,也可供其他引调水工程通信网络建设借鉴。 相似文献
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An Automated Tool for Smart Water Network Partitioning 总被引:1,自引:0,他引:1
Armando Di Nardo Michele Di Natale Giovanni Francesco Santonastaso Salvatore Venticinque 《Water Resources Management》2013,27(13):4493-4508
Water Network Partitioning (WNP) represents the application of the “divide and conquer” paradigm to a Smart WAter Network (SWAN) that allows the improved application of techniques for water balance and pressure control. Indeed, these techniques can be applied with greater effectiveness by defining smaller permanent network parts, called District Meter Areas (DMAs), created by the insertion of gate valves and flow meters. The traditional criteria for the design of network DMAs are based on empirical suggestions (number of properties, length of pipes, etc.) and on approaches such as ‘trial and error’, even if used together with hydraulic simulation software. Nevertheless, these indications and procedures are very difficult to apply to large water supply systems because the insertion of gate valves modifies the original network layout and may considerably worsen the hydraulic performance of the water network. The proposed tool, based on some graph partitioning techniques, commonly applied in distributed computing, and on an original optimisation technique, allows the automatic design of a WNP comparing different possible layouts that are compliant with hydraulic performance. In this paper, the methodology was tested on a real case study using some performance indices to compare different WNPs. The proposed tool was developed in Phyton and integrates graph partitioning, hydraulic simulation techniques and a heuristic optimisation criterion. It allows the definition of DMAs with resulting performance indices that are very similar to the original network layout. 相似文献
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虚拟专用网络(Virtual Private Network,简称VPN)是在公用网络上建立专用网络的技术。 VPN技术以其独具特色的优势赢得了越来越多的企业的青睐。河北省水利水电勘测设计研究院结合企业自身组织机构及网络现状对VPN技术进行了分析,利用VPN技术的特点组建了本企业的虚拟局域网络平台,为全院自动化办公和开展三维协同设计奠定了基础。 相似文献
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通信网络设计是数字化变电站系统设计的核心内容之一,直接关系到数据传输的实时性和变电站各种功能的实现。文中提出了利用网络仿真平台对变电站通信网络进行设计的构想,分析了在数字化变电站不同的发展阶段,通信网络设计的主要内容和网络仿真平台的主要功能及意义,介绍了其结构和仿真流程,重点讨论了仿真模型、仿真内核、通信分析器等开发过程中需要解决的几个关键问题。 相似文献
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Armando Di Nardo Michele Di Natale Mario Guida Dino Musmarra 《Water Resources Management》2013,27(6):1837-1850
Each single phase of a water supply network, from water adduction to distribution to end-users, is exposed to many diverse potential sources of intentional contamination (or malicious attacks). One of the most dangerous threats is a backflow attack that occurs when a pump system, easily available on the market, is utilized to overcome the pressure gradient of network pipes. In this work, a simple backflow attack with cyanide being introduced into a real-water system is modeled and the most dangerous introduction points for a contaminant incident are defined. Moreover, the network vulnerability has been analyzed by computing the lethal dose of cyanide ingested by users and the total length of the contaminated water system. Eventually the effects of network partitioning and district isolation to protect water supply systems have been investigated. The results show how district closing - by network sectorization techniques used to improve leakage search and reduction - can significantly decrease contaminant diffusion and protect part of the users from cyanide uptake. Network sectorization can also reduce the risk of simple malicious attacks because several introduction points are necessary to have a massive negative impact on the network. Simulation results also show that in some cases water network partitioning may worsen water network protection and further studies are necessary to design water districts for network security and safety. 相似文献