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计算机及网络技术的发展推动了视频监控系统的发展,通过智能综合监控系统的构建,将变电站分散的视频系统、环境监控系统整合成统一的变电站智能综合监控系统,促进变电站自动化再上一个新台阶。介绍变电站智能综合监控系统的设计和实现的功能,通过该系统的应用,可以使站内设备工况远程监控、远程操作辅助监视、站端工作行为监督和事故辅助分析等功能得以实现,便于设备维护和故障排除,提高工作效率、电网安全和经济效益。 相似文献
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计算机及网络技术的发展推动了视频监控系统的发展,通过智能综合监控系统的构建,将变电站分散的视频系统、环境监控系统整合成统一的变电站智能综合监控系统,促进变电站自动化再上一个新台阶.介绍变电站智能综合监控系统的设计和实现的功能,通过该系统的应用,可以使站内设备工况远程监控、远程操作辅助监视、站端工作行为监督和事故辅助分析等功能得以实现,便于设备维护和故障排除,提高工作效率、电网安全和经济效益. 相似文献
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近年来,随着网络技术、计算机技术、数据通信等自动化技术的发展,各种电力自动化系统应运而生,使电网综合控制系统的实现成为可能,如预付费电能表实现远程刷卡在电力需求侧管理上得到应用.本文根据广东省蕉岭供电局实行预付费装置多年的实践经验,充分结合现有的电力和通信等网络结构,就如何实现变电站预付费电能表远程刷卡进行初步探讨. 相似文献
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针对变电站电缆沟道排水的问题,提出变电站电缆夹层预警排水系统,在电缆夹层中加装水位传感器,在变电站主控室内加装报警装置和无线传输设备,实时监测积水情况。通过实践,系统具有较好的实用性,并且运行可靠性也很高。 相似文献
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<正>1变电站扩建管理中智能感知系统应用优势变电站扩建要根据实际状况进行技术优化、扩建增容,满足生产和发展需求。通过智能感知系统进行变电站扩建管理,可以对天气环境、施工环境及施工作业等多种不同场景进行全面系统的监管,有效避免传统管理模式的不足,提升管理质量与效率,充分保障变电站扩建质量。1.1提升巡检效率为了提升巡检效率,可以通过智能感知系统进行远程监测,在在线监控、视频监控及智能化检测机器人等多个功能系统的共同协作之下进行远程综合监测; 相似文献
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变电站自动排水防汛系统 总被引:1,自引:0,他引:1
因变电站出水道排水不畅,大暴雨时雨水进入控制室、高压室、端子箱内端子排处而引发事故。对此隐患进行了调查研究,采用由拍门阀、电缆浮球液位开关(或者浮子开关)、抽水泵组成的自动排水防汛系统,以达到自动排水、阻止雨水倒灌的目的。 相似文献
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《Journal of Agricultural Engineering Research》1998,69(3):249-254
A model to represent the discolouration of dried powder of carrots as a function of temperature was developed. Two types of carrots, Asian and European, containing large amount of lycopene and β-carotene, respectively, were tested. The dried powder was stored under an atmosphere with O2and at three different temperatures, 5,20 and 35°C. The surface colour of the powder was monitored during storage by a Hunter colour ratioa/b. In the proposed model, the rate of oxidation was assumed to be represented by the product of the fraction of concentration of oxidized pigment at arbitrary time and a specific rate of oxidation of pigment. The rate parameters in the proposed model were calculated by fitting the experimental data with smooth curves by trial and error at the end of the induction period but before discolouration took place. The frequency constant and activation energy, expressing the temperature dependence of the rate parameters, were expressed by the Arrhenius relation. The simulation results of a Hunter colour ratioa/bof dried powder at 25°C showed good agreement with the experimental data, suggesting that the proposed model was effective for the prediction of discolouration of dried powder of both types of carrot. The use of the induction period in the manner described may enable the shelf life of dried powder to be predicted. 相似文献
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感官检验棉花的品级,这是农村常见的一种检测手段.它的一个主要特点就是存在不确定性.这是由于检验员的品级检验水平存在一定的差异,其中有很多因素制约着检验的结果.文章对影响感官检验结果的因素进行了系统的分析. 相似文献
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The fractional outflow rate of water from the rumen, measured as the rate of disappearance of the chromium complex of ethylenediamine tetra-acetic acid, was related to a number of dietary factors. A multiple regression equation was derived which expressed fractional outflow rate as a function of the intakes of dry matter, ash, acid-detergent fibre and crude protein.The data analysed consisted of 243 observations for sheep on 59 diets, including forage, concentrate and mixed diets. The ranges covered by the data were: fractional outflow rate 0.7–3.6 day?1; dry matter intake 560–1400g/day; ash 4–30%, acid-detergent fibre 7–41%, crude protein 5–26 % of dry matter; there were no observations for sheep of less than 34 kg liveweight.The equation accounted for 56·3 % of the total variance. Between-sheep variance could not be calculated for the whole of the data but was undoubtedly substantial since, for a sixth of the data, it was known to account for 38 % of the total variance. 相似文献
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从灾害经济学的角度探讨了城镇供水优化调度的必要性和可能性,认为在缺水不可避免的情况下,对供水进行优化调度可以减小缺水带来的损失,产生较好的减灾效益,特别是可以大大减小严重干旱的灾害效应。并根据水资源的特性,提出了缺水损失的计算模式以及优化调度的原则和方法。 相似文献