电力光纤通信网安全风险量化模型

文中提出的电力光纤通信网安全风险的量化模型,从两条路径对风险的相关要素之间的关系进行分析,首先从风险定义的两个因素发生概率和影响程度与资产、威胁和脆弱性之间的关系出发,用公式具体解释它们是如何构成风险的,然后从资产对应的脆弱性,脆弱性面临的威胁,和威胁对应的相关安全措施来计算风险值,最后以SDH设备为例对模型进行了验证,结果表明该模型对于风险值计算具有相对客观和准确性.     

电力通信网风险管理关键技术探析

在现代智能电网的建设之中,电力通信网是重要的基础设施,连接了多个子系统之间的通信业务。所以,电力通信网能够安全稳定运行就成为关键所在。通过长时间的工作实践来看,在现阶段的通信网运行之中依旧存在较大的风险,还需要做好电力通信网的风险管理。所以,文章在概述电力通信网管理风险的基础上,通过电力通信网风险评价的具体实例,对电力通信网风险管理关键技术之一进行探讨,希望对后续的风险管理有所帮助。     

一种电力通信网规划成效评价方法

电力通信网是电网发展的重要支撑平台,电力通信网的发展速度与电网发展水平密切相关.提出一种评价电力通信网与电网发展适应性的量化评估方法,该方法以通信网和电网的历年统计数据为基础,采用灰色关联度分析方法,系统分析各地区通信网建设规模与电网发展水平之间的相互作用关系,从而得出通信网与电网发展的内在关联规律,指导电力通信网发展规划以及投资具有理论和实际意义.     

电力通信网链路的运行风险评价分析

电力通信网是针对电力系统专门构建的一种自动化控制模型,电力通信网可以有效地解决很多问题,便于人们更好的管理电力部门,因此,具有明显的行业特色和特殊的安全可靠性要求。本文对电力通信网的现状和分析进行了简单的介绍,并对电力通信网链路的运行风险评价方法进行详细的剖析,最后对电力通讯网的运行风险评价提出了新的构想。     

电力通信网可靠性研究

在我国电力事业的快速发展中,电力信息化的进程脚步开始逐渐加快,同时拉近了电力网和通信网之间的关系。电力系统的安全可靠运行离不开电力的通信网络,因此对电力通信网的可靠性研究将十分必要。本文主要根据电力通信网的可靠性意义,来分析影响电力通信网可靠性的因素,以及提高电力通信网可靠性的相关策略。     

电力通信网的风险分析及其控制措施探究

在电力系统智能化、自动化的建设过程中,电力通信网占据着举足轻重的地位,许多二次系统间的通信服务原重依赖于电力通信网,电力通信网络的稳定性对电网的安全稳定影响越来越大,电力通信网承担着电力系统数据、信号、综合数据网、电话语音等业务的传输,随着一些电力系统新技术的投入使用,电力通信网已成为保障这些技术设备正常运行的基础平台.当前,电力通信网已经发展成为一张规模比较大的通信网络,但因为电力通信网相比移动通信网起步较晚,在建设、运维等方面都还存在许多问题.结合长期以来的工作经验进行分析,在目前形势下的通信网络存在着很多潜在威胁,需要对电力通信网的风险进行分析,并对其控制方案进行不断地探索.所以,本文阐述了电力通信网存在的一些风险,并对风险管理控制措施进行了探究.     

浅谈电力通信网风险评估与电网安全运行融合技术

在电网体系中,电力通信网是其中重要组成部分,决定着电网中的信息技术应用.电力通信网中出现风险将会严重的影响到电网的稳定运行.因此,在电力通信网中需要对其风险进行综合性评估,以保障电网体系的安全运行.基于此,在本文中对电力通信网进行风险评估,并且提出促进电网安全运行的融合技术.     

电力通信网安全防护体系架构模型研究

文中从电力通信网安全现状入手,对电力通信网物理安全和信息安全的角度进行了风险分析。利用向日葵模型,将安全分区对象划分为应用系统和数据网,建立了"生产控制区、信息管理区和通信集控区"三个安全分区的模型。从传输网、业务网、支撑网、接入网四个维度构建了电力通信网安全防护架构,提出了"可靠承载、分区隔离、安全接入、等级防护"的整体安全防护策略,为电力通信网安全防护整体设计打下了基础。     

电力通信网安全风险层次化划分

本文按照ITU-T X.805,研究了电力通信网安全风险评估和层次化划分的概念,这里从威胁和脆弱性两个角度对电力通信网进行安全风险分析,并总归归纳了导致上述威胁和脆弱性产生的原因,并给出了电力通信网安全风险层次结构,为第四章的风险模式的建立和计算提出基础。     

电力骨干通信网信息流模型与流量测算

电力骨干通信网业务需求分析及业务流量测算是进行通信网规划和优化的重要工作.按照智能电网电力骨干通信网承载业务的情况,按专线业务及IP业务分别提出了电力骨干通信网基础业务模型及业务流量测算方法,形成了电网典型业务节点业务流量测算模型和方法.基于“十三五”电力骨干通信网业务需求,对典型电网生产业务及典型管理信息化业务流量模型进行了研究,形成了每类业务的流向和流量计算模型.形成的各类业务流量测算模型已经应用于国家电网公司“十三五”通信规划中,为电力系统各级骨干通信网规划提供了科学指导与参考.     

奥帆赛通信安全保障方案

作为奥运会合作伙伴,中国网通精心打造安全可靠的奥运通信网络,青岛网通运用多种先进的通信技术为奥帆赛提供通信保障工作。本文从传输网络、IP数据网络、交换网络、光缆通信保障和电源系统五个方面详细介绍奥帆基地网络保障方案。     

Method to create and optimize original electric power communication network based on K-means

The major contribution was using the K-means to create nodes instead of traditional Waxman means in order to get a suitable and strong original electric power communication network.After the nodes were created,a vulnerability analysis was given on the grid of the network topology and check that if it has a network islanding,at last the weak nodes would be reinforced.A simulation about this algorithm shows that this algorithm which combines K-means and vulner-ability can create a electric power communication networks with better resistance of risks.     

智能废旧蓄电池存放托盘的研制与应用

在现代电力及通信行业运营的过程中,会产生的大量报废蓄电池,从而引起环境污染,其在搬运过程中还可能会对人身造成伤害,因此急需一种满足规范要求的存储废旧蓄电池的托盘,来存放、管理、回收报废蓄电池。为降低环保风险,提高搬运效率,文中首先分析了废旧蓄电池储存对托盘技术的要求,从环保角度和提高经理效益两方面对托盘进行了结构设计和电路设计,研制了一种智能废旧蓄电池存放托盘。该智能托盘能够防止电池泄露,降低作业人员的劳动强度。     

Impact of Natural Gas Infrastructure on Electric Power Systems

The restructuring of electricity has introduced new risks associated with the security of natural gas infrastructure on a significantly large scale, which entails changes in physical capabilities of pipelines, operational procedures, sensors and communications, contracting (supply and transportation), and tariffs. This paper will discuss the essence of the natural gas infrastructure for supplying the ever-increasing number of gas-powered units and use security-constrained unit commitment to analyze the short-time impact of natural gas prices on power generation scheduling. The paper analyzes the impact of natural gas infrastructure contingencies on the operation of electric power systems. Furthermore, the paper examines the impact of renewable sources of energy such as pumped-storage units and photovoltaic/battery systems on power system security by reducing the dependence of electricity infrastructure on the natural gas infrastructure. A modified IEEE 118-bus with 12 combined-cycle units is presented for analyzing the gas/electric interdependency.     

通信机房开关电源谐波测试分析报告

本文对宁波联通交换局大楼不同型号的开关电源谐波测试数据进行分析,分析整流模块负荷率对开关电源电流畸变、工作效率等的影响,对设备选型、日常维护等方面提出相关建议.     

电力通信系统下一代光网络的分析与探讨

就目前电力通信系统光传输网的现状展开分析,提出制约网络发展的难题和业务发展的需求,结合智能光网络(ASON)的技术优势,针对电力通信系统下一代光网络的发展谈了一些自己的看法,对通信系统网络建设具有一定的参考借鉴意义.     

Broadband PLC access systems and field deployment in European power line networks

Data communications over low voltage power distribution networks provide an alternative and cost-effective last mile access technology. It offers data and voice services to users in residential and business areas. Currently, many field trials with different broadband power line communications systems are running worldwide. This article describes one of these systems for the last mile application in European power line networks. It addresses major field deployment aspects, such as range, coverage, coupling, and intercell interference.     

ADSS光缆电腐蚀问题的浅析

近年来ADSS光缆已成为110 kV及以下电力通信的首选光通信传输介质。ADSS光缆具有绝缘良好,抗拉强度高,可与电力线同杆塔架设等优点,但存在着易电腐蚀等缺陷。对ADSS光缆产生电腐蚀的原因和控制方法作了详细的阐述,并通过一个ADSS光缆电腐蚀案例的分析,讨论了ADSS光缆产生电腐蚀的必要条件和预防方法,证明了ADSS光缆的电腐蚀在110 kV及以下的电压等级上是可以控制的,ADSS光缆是可以安全运行的。     

Mass transit power traction networks as communication channels

The rapid progress of power line communications (PLC) for data transmission over electric power supply systems is now opening ways for special applications such as train automation in local transportation and mass transit (MT) systems. These DC-powered traction networks can be used as communication links between wayside equipment and the moving trains. As MT networks significantly differ from usual electricity supply systems, the usage of existing models and communication equipment for conventional PLC channels turns out infeasible. Therefore, the work reported in this paper focuses on MT channel investigation and modeling, in order to develop novel adapted solutions. The outcome is a stochastic MT channel model, which-besides multipath and time-variance-also includes peculiar properties such as the behavior of ring structures and the impact of the Doppler effect invoked by moving trains. In addition, a very special interference scenario is treated, caused by the rectifiers in these DC-powered environments. Besides a complete simulation model, this paper presents detailed guidelines for building emulation hardware, so that channel adapted PLC system design for MT networks can now be successfully started without further expensive field trials.     

Integrating substation automation

Even though automation and remote control of electric power substations began as long ago as the early 1960s, the integration of intelligent electronic devices is still far from complete, especially in North America. The principal obstacle to greater interoperability is the plethora of incompatible hardware interfaces and protocols. The list includes intelligent electronic devices, computer platforms, operating systems, communications networks, and graphical user-interfaces. An analysis is given of how to integrate these assorted technologies into a single substation control system, while overcoming any obstacles to implementation. The benefits of the integrated system to the utility operations is also be enumerated