Under cold weather conditions, the icing of ground wire insulator will pose a challenge to the insulation coordination between air gap and the insulator itself. It can also increase the probability of abnormal discharge which will lead to power loss. In this paper, the development process of arc is recorded by an ultrahigh-speed camera, and the effects of icing thickness and freezing water conductivity on air gap breakdown voltage are studied. The surface electric field of ground wire insulator under different icing thicknesses and freezing water conductivities is simulated and analyzed by simulation software. Furthermore, the influence of the above factors on the maximum surface electric field intensity of ground wire insulator is also investigated. The simulation and experimental results show that both the gap breakdown voltage decreases while the maximum surface electric field intensity increases with the increase of icing thickness. The increase of freezing water conductivity will cause the gap breakdown voltage to decrease first and then levels off. For the maximum surface electric field intensity, it increases first and then remain unchanged with the increase of freezing water conductivity. In addition, the observation results show that the arc is always initiated from the bottom of the plate electrode during air gap breakdown.

Currently, the abnormal discharge of the ground wire insulator occurs frequently in the overhead ground wire. In order to solve the insulation coordination problem of ground wire insulator and the parallel gap, the characteristics of ground wire insulator is investigated in this paper to select the appropriate parallel air gap distance. The results show that both the power frequency breakdown voltage and lightning breakdown voltage U50% of the ground wire insulator without the parallel air gap follow the power function relation with the ESDD. In addition, when the parallel air gap distance is the same, both the power frequency breakdown voltage and the lightning breakdown voltage of the suspension ground wire insulator and tension ground wire insulator are almost the same. According to the test results, when ESDD is 0.01 mg/cm2, 0.03 mg/cm2, 0.05 mg/cm2, 0.1 mg/cm2, 0.2 mg/cm2, the maximum gap distance can be set to 50 mm, 45 mm, 35 mm, 30 mm, 25 mm, respectively.

本文提出了一种优化模型用于优化微电网中包含冷储能和热储能的微电网网络.该方法旨在找到冷储能和电储能的最佳设定值,同时使总运行成本最小化.为了优化微电网的运行,将引入电储能和冷储能系统模型.并建立了电储能和冷储能的数学模型,以微电网的总运行成本为目标函数.为了解决这个问题,我们提出了一种微电网电储能、热/冷储能以及中央空调系统的最优控制算法结构.该算法有别于传统的优化算法,能获得更佳的优化策略,提升微电网决策者管理策略的效率和经济性.最后通过案例分析进行了模型验证.仿真实验结果表明,本文提出的运行策略能够有效的提高微电网运行的市场收益.

本文介绍了一种新型变电站智能巡检系统.该系统通过远程遥控或自主运行的方式,实现在少人值守甚至是无人值守的变电站对变电站的电力设备运行环境和设备运行状态进行全方位的系统巡检,及时发现各类电力设备的异物悬挂和热缺陷等设备异常缺陷.应用结果表明:采用该变电站智能巡检机器人系统具有低成本、高智能的优点.

变电站双体智能巡检机器人能够实现变电站大部分仪器设备的检测功能.具备自主巡检、数据采集和精确测量等功能,提高电力设备巡视效率,满足变电站日常巡检的业务需求,确保电网的安全稳定运行.本文介绍目前变电站巡检机器人的国内外研究现状,探讨机械臂控制、精确测温和末端拓展等关键技术,展望其发展趋势,为变电站机器人的进一步发展提供参考.

文章提出了基于4G网络和电力专网通信的远程数据读取和传输系统.该系统采用一体化的数据接口模块,作为数据读取传输的关键技术,能够很好地利用普通的便携式红外热像仪实现设备红外热像测温的实时、稳定和可靠的数据读取和传输,并且可以实现智能巡测、巡检终端的远距离无线接入.

对于智能电网的信息化来说,数据信息的采集和传输是很重要的环节和基础,目前绝大多数基于移动公网的电力运维监测数据传输系统受制于地理环境和无线覆盖盲区的限制,存在偏远地区通信和数据传输困难的缺点,针对这一难题,提出基于TDMA时分接入的电力无线OFDM终端传输方式,能够很好的实现电力运维巡检以及抢险抢修的稳定、可靠的远距离的现场数据传输,并且可以实现智能巡测、巡检终端的远距离非视距的无线接入,有利于智能电网信息化、互动化的发展.

In allusion to problems of insufficient intelligent level,complicated and cumbersome operating process of tradi-tional inspection system for power transmission lines and unstable signals in remote areas,this paper presents a kind of intel-ligent inspection system for power transmission lines based on Beidou positioning technology and artificial intelligence. In this system,a field path navigation model is established based on Baidumap ,defects database for the tower is set up by using the expert system and a graphical inspection function model is established as well. Intelligent algorithm is used for planning on inspection path. In order to improve security and communication reliability,Beidou system is used for tower positioning and 3G/4G network is used for communicating with the management platform. This system is significant to improve inspec-tion efficiency and reduce fault handling time.

阐述了铅酸蓄电池再生的现实意义,并简单介绍了现有的铅酸蓄电池修复技术概况,提出了一种采用电化学方法的新型铅酸蓄电池修复再生技术,阐述了该新技术的原理、实际应用情况.实践表明,该技术对解决蓄电池硫化导致的失效有显著的修复效果,具有一定的推广意义.最后对该技术的推广应用提出了策略性的建议.

输电线路高压走廊地处偏僻地区，线路巡检和抢险抢修应急指挥现场，需要将数据和图像实时传输到指挥调度中心，基于电力频段230MHz的无线数据传输终端内置高功率的射频传输模块，终端与基站之间可以实现远距离的非视距的数据传输，实现点对点、点对多点通信；在基站可以接入电力专网或者通过无线公网接入互联网，完成与应急指挥调度中心的IP数据通信，并接受应急指挥中心的远程监控，实现双向交互通信。

输变电线路状态监测技术是实现智能电网的重要手段,目前绝大多数基于移动公网的在线监测系统受地理环境限制,存在覆盖盲区,难以进行远程数据传输.针对这一难题,对北斗通信应用于智能电网输变电状态监测进行了研究,提出了新的系统架构和技术方案.通过重新设计的软硬件,以北斗卫星短消息通信方式作为输变电状态监测的关键数据传输技术,能够很好地实现输变电线路状态监测系统的实时稳定和可靠的数据传输.随着智能电网信息化的发展,系统具有较好的实用性.

本文详细介绍了黑点监控平台中电力线路巡检过程中应用，该平台实现了供电企业对输电线路上出现的黑点进行实时管理、监控和预警的功能。产品推广后，方便了线路巡查人员及各级管理人员对线路黑点情况的及时更新与监控，提高了工作效率和工作质量。

输电线路应急抢险现场和施工可视化管控，需要将视频实时传输到指挥调度中心，输电线路视频传输终端内置无线传输功能和高清视频采集编码，实现对输电线路现场应急抢险进行实时音视频采集和无线宽带传输，远程数据传输通过IPSTAR卫星通信终端，实现与应急指挥中心的IP数据通信，上传实时视音频和数据等，并接受应急指挥中心的远程监控、远程控制、远程指挥调度和异地协同工作，实现双向交互通信。

输电线路运维工作的人力、物力资源越来越难以满足日益增长的运维工作量需求,亟需提出更加经济、科学和可操作性强的运维方法.针对输电线路在地理位置、线路环境及在电网中所处地位的差异性,提出了一种差异化运维方法.该方法首先将线路划分为4类,综合考虑输电线路的正常运维和各种特殊运维,制定4类线路设备的运维周期和运维项目,在对线路进行运维评估后,得到全线的运维策略.在满足各种运维约束条件的基础上,以输电线路运维的经济性作为目标函数,建立输电线路差异化运维模型,利用遗传算法进行优化求解,得到各线路优化后的差异化运维计划.最后,通过实例验证了所提方法的正确性和有效性.

Autonomous robots charging technology has a wildly applied prospect. Under the foundation of basic principles of analysis and experimental verification,this paper proposes a new practical power automatic docking methods. The method analogy human behavior that getting power plug and plugging the power, When the robot ready to charge, the power docking controller conducts mechanical hand horizontally extending backwards firstly, then via radio signals cable and special power outlet are controlled remotely to move laterally approaching mechanical hand, after the touching of cable and mechanical hand, controlling cable moving lateral movement in order to get a adjusting height of the special outlet . This method realizes accurate positioning of the special power outlets in three-dimensional space. Thus, as long as the wheeled robot is parked in designated areas, although there are moored deviation and tire pressure changes caused by variation of mechanical hand in height from the ground,the robot can achieve precise control of the special power outlet . In this paper,a method is described in detail.

In order to achieve reliable and steady transmission of HD images, substation autonomous patrol robot uses a combination of WLAN and 3G/GPRS. The robot uses reliable and steady 3G/GPRS network to transmit necessary image data, and uses WLAN network to transmit unnecessary real-time HD videos. This paper designs an image server and a control client, implements each subroutine for different cameras by using a dedicated SDK and the open source project Live555+FFmpeg. The image server can transmit image data and forward real-time video stream correctly. The control client can receive and save image data and play real-time video, the images is clear and the transmission delay is small.

Typhoon occurs frequently in the coast areas of Guangdong province in recent years,causing serious impacts on the low-voltage transmission lines,and resulting in signi-ficant economic losses and adverse social influences. However, this situation has yet to draw adequate attention from the related departments in the areas, and there have not been related researches on the windproof measures,leading to low capability to resist typhoons,posing a major challenge.

变电站设备巡视工作是运行管理的一个重要组成部分,它是检查设备运行状况、掌握设备运行规律、确保设备安全运行必不可少的基础工作。针对目前设备巡视中存在的问题,本文从三个角度提出提高设备巡视的方法。