Application of Distributed Intelligent Power Supply Technology in Expressway Tunnels

With the coordinated development of today's social economy with science and technology,various advanced technologies are being used in highway engineering,especially the distributed intelligent power supply technology in expressway tunnels,which has a very significant advantage.In order to realize the effective application of this technology and promote the power supply effect in expressway tunnel,this study analyzes the advantages of this technology and its application in expressway tunnel,hoping to provide scientific reference for the application of distributed intelligent power supply technology and the engineering development of expressway tunnels.

A review on the influence of intelligent power consumption technologies on the utilization rate of distribution network equipment

The economy of distribution networks largely depends on the utilization rate of distribution network equipment.Most of the emerging intelligent power consumption technologies have a positive effect on equipment utilization and their use can save investment of distribution networks.In this paper,the influence of intelligent power consumption technologies on the utilization rate of distribution network equipment is reviewed.The evaluation methods and indexes are assessed first and then intelligent power consumption equipment with energy storage function,vehicle-to-grid(V2G)technology and time-of-use(TOU)tariff are reviewed respectively.It is concluded that these intelligent power consumption technologies and measures have great potential to improve utilization rate of distribution network equipment because of their effective improvement to power load.Meanwhile,recommendations on how to utilize these intelligent power consumption technologies to improve utilization rate of distribution network equipment are proposed.

宇航数字化、智能化电源技术研究

航天技术的快速发展与创新对宇航电源的功能提出了更高需求,需进一步拓展应用,为此提出了适应于未来的宇航数字化、智能化电源技术.通过分析宇航数字化、智能化电源在电推进系统中的复杂供电及控制要求,以及在中国超低轨小卫星中对μN级高精度控制、宽范围推力调节等方面的典型应用,分析研究了宇航数字化、智能化电源技术的主要技术途径和发展展望,给出了以现场可编程门阵列(Field Programmable Gate Array,FPGA)为核心控制芯片的模数转换器(Analog-to-Digital Converter,ADC)电路、数字脉冲宽度调制(Digital Pulse Width Modulation,DPWM)发生器及数字补偿器等数字化电源的设计要点,最终实现了电源输出电流毫安级的调节精度和超低轨小卫星微牛级的高精度控制要求.

通信电源技术发展趋势及标准研究方向

在社会经济不断发展和人类文明不断进步的过程中,科学技术水平逐渐提升,对各个行业产生了重大影响,为人们的工作和生活提供了极大的便利。通信技术的出现在一定程度上改变了人们的日常生活和工作习惯,已成为社会发展和进步的重要支撑。而通信电源作为基础网络通信设施,其运行的安全性和稳定性直接影响着通信系统的使用效果。从通信电源技术的概念、特点、组成入手,分析通信电源技术的应用现状,并阐述通信电源技术的发展趋势,研究通信电源技术的标准研究方向。

火电厂锅炉“四管”泄漏原因、防范与管理措施

火电厂锅炉“四管”泄漏是电厂运行中常见的故障之一,一旦发生,不仅会导致锅炉非计划停运,增加维修成本和运行风险,还可能对电厂的安全生产构成严重威胁。因此,深入探究火电厂锅炉“四管”泄漏的原因,并对目前锅炉“四管”泄漏防范的常规措施及智能化管理措施进行探讨,确保电厂安全、稳定、经济运行。

基于云原生构架的自主可控流域电力生产系统研究

电力生产是现代社会的基础产业之一,高效的电力生产对于确保能源供应和经济发展至关重要。旨在探索并实现了融合云原生构架的现代化技术与电力生产相结合的电力生产系统,通过提高电力企业生产运营的数字化和信息化水平,促进电力生产的智能化。达到提高电力生产效率、降低成本、提升安全性和可靠性,获得更好的经济效益和社会效益的目标。

新时期电力智能通信电源技术的关键点研究

随着我国经济社会建设的进步,电力通信事业飞速发展,对通信电源提出更高的要求。因此,必须不断提升通信电源的运行效率和质量,并强化稳定性,满足电力系统运行的需要。近年来,电力通信电源技术不断创新,新型智能通信电源技术已经进入实践。基于此,文章介绍电力智能通信电源技术的核心组件和应用优势,并探讨新时期电力智能通信电源技术的应用要点,以期为新时期电力通信发展提供参考。

继电保护自动化技术在电力系统中的应用分析

随着电力工业的快速发展,电力系统在运行中面临各种故障挑战,因此继电保护自动化技术的应用显得尤为重要。文章概述继电保护自动化技术,详细分析该技术在发电机、变压器、母线以及接地保护中的具体应用,探讨继电保护自动化技术在电力系统中的实施策略与发展趋势,旨在为电力系统的智能化管理和安全保障提供有力支持。

A novel recurrent neural network forecasting model for power intelligence center

In order to accurately forecast the load of power system and enhance the stability of the power network, a novel unascertained mathematics based recurrent neural network (UMRNN) for power intelligence center (PIC) was created through three steps. First, by combining with the general project uncertain element transmission theory (GPUET), the basic definitions of stochastic, fuzzy, and grey uncertain elements were given based on the principal types of uncertain information. Second, a power dynamic alliance including four sectors: generation sector, transmission sector, distribution sector and customers was established. The key factors were amended according to the four transmission topologies of uncertain elements, thus the new factors entered the power intelligence center as the input elements. Finally, in the intelligence handing background of PIC, by performing uncertain and recursive process to the input values of network, and combining unascertained mathematics, the novel load forecasting model was built. Three different approaches were put forward to forecast an eastern regional power grid load in China. The root mean square error (ERMS) demonstrates that the forecasting accuracy of the proposed model UMRNN is 3% higher than that of BP neural network (BPNN), and 5% higher than that of autoregressive integrated moving average (ARIMA). Besides, an example also shows that the average relative error of the first quarter of 2008 forecasted by UMRNN is only 2.59%, which has high precision.

平洞钻爆法开挖支护全工序机械化智能化施工技术

随着科学、技术、经济条件的改善,我国隧道施工机械化水平不断提高。在隧道施工中,全机械化施工的发展是未来隧洞施工的新方向,采用全机械化施工作业代替人工开挖作业,改善劳动条件。机械化施工作业不但能够提升施工效率,缩减工程工期,减少人工的体力劳动、确保施工人员的生命安全,而且可以保证施工质量,提高施工效益。同时机械化施工对实现工程施工质量标准化、提高隧洞信息化水平,促进隧道施工机械朝着更加规范、标准的方向发展。

Multi-objective coordination optimal model for new power intelligence center based on hybrid algorithm

In order to resolve the coordination and optimization of the power network planning effectively, on the basis of introducing the concept of power intelligence center (PIC), the key factor power flow, line investment and load that impact generation sector, transmission sector and dispatching center in PIC were analyzed and a multi-objective coordination optimal model for new power intelligence center (NPIC) was established. To ensure the reliability and coordination of power grid and reduce investment cost, two aspects were optimized. The evolutionary algorithm was introduced to solve optimal power flow problem and the fitness function was improved to ensure the minimum cost of power generation. The gray particle swarm optimization (GPSO) algorithm was used to forecast load accurately, which can ensure the network with high reliability. On this basis, the multi-objective coordination optimal model which was more practical and in line with the need of the electricity market was proposed, then the coordination model was effectively solved through the improved particle swarm optimization algorithm, and the corresponding algorithm was obtained. The optimization of IEEE30 node system shows that the evolutionary algorithm can effectively solve the problem of optimal power flow. The average load forecasting of GPSO is 26.97 MW, which has an error of 0.34 MW compared with the actual load. The algorithm has higher forecasting accuracy. The multi-objective coordination optimal model for NPIC can effectively process the coordination and optimization problem of power network.

基于5G通信技术的火电厂集控运行系统优化研究

随着国家能源发展战略的不断深化,火电厂集控运行系统的优化已成为行业关注的重点。文章基于5G通信技术的特点,阐述其在火电厂集控运行系统中的应用前景与优化潜力。通过实证分析,发现5G通信技术能够显著提升系统的实时数据传输能力、远程控制精度以及多设备互联互通水平,从而全面提升火电厂的集控运行效率。在此基础上,提出相应的优化策略,涉及系统架构重构、边缘计算集成以及人工智能算法融合等方面,旨在构建高度智能化且高效可靠的新一代火电厂集控运行体系。该研究不仅具有理论价值,还为相关领域的实践提供了借鉴。

融合蒙特卡洛算法的电力工程造价预测分析

针对现阶段变电站智能化设计中,电力工程造价在价格预测及管控策略方面存在的不足,利用粗糙集的属性约简理论对历史数据做约简压缩,结合蒙特卡洛模拟算法对具有一定概率分布的子项目进行单位容量工程造价到项目总造价预测;以智能变电站为研究对象,构建了基于蒙特卡洛算法的电力工程造价预测模型。实验结果表明,智能化工程建设造价预测分析方法可靠准确,基于粗糙集规约的蒙特卡洛算法相较于经典蒙特卡洛模拟算法,在随机抽样数据集上的测试精度至少提高0.5%。

瓦斯抽采泵站智能化应用研究

为提高煤矿瓦斯泵站自动化与信息化水平,减少瓦斯泵站能耗,提出瓦斯抽采泵站的智能化控制方法。在分析瓦斯泵站高能耗原因的基础上,提出智能瓦斯泵站抽采系统概念;采用瓦斯泵站抽采系统智能化改造的方法,通过对水环真空泵增加变频器控制电机,进一步分析抽采瓦斯的能耗以及瓦斯发电厂发电数据。结果表明:智能瓦斯泵站在满足安全生产的情况下,抽采瓦斯能源消耗减少50%以上;工人的工作强度降低80%。

屋顶光伏电站的智能给水清洗方案研究

针对目前屋顶光伏电站的清洗难题,设计开发智能清洗系统——iClean清洁系统,研究屋顶光伏板积灰及定期清洗对发电量的影响;通过水路控制系统和水路管网系统设计,解决屋顶人工清洗的高危险、高成本、低效率等难题,可极大地提高屋顶光伏发电站的发电量,相较于常规的清洗方案,该智能清洗方案累计净提高发电量7%~14%,且可实现设计安装的标准化、数据检测的智能化等。

碳中和背景下可再生能源发电产业研究

当下,全球能源结构正在加速调整,可再生能源发电的趋势不可更改。“双碳”背景下,中国新能源电力网络的发展规模不断扩大,新型电网建设取得了长足进展。从长远视角来看,不断投入新兴科技、优化电网运行的商业模式、加强可再生能源发电的柔性调控,不仅能带来良好的经济效益,还能带来不容小觑的社会效益和生态效益。立足现代电网的发展,从储能技术和管理体系出发,寻求行稳致远的推进路向,开展对未来电网调控的展望。

智能UPS在广播电视发射台中的应用及相关技术研究

不间断电源(Uninterruptible Power Supply,UPS)是广播电视发射台进行信号传输的关键部分,也是广播电视发射台的重要组成部分。UPS可以保证广播电视发射台不间断供电,保障电视节目顺利播出。广播电视发射台应高度重视UPS的管理维修工作,加强对智能UPS的研究,充分发挥智能UPS在广播电视发射台中的应用价值。从UPS的相关概述入手,分析UPS系统设计,针对智能UPS在广播电视发射台中应用时存在的常见问题提出针对性的解决策略。

城市配电网若干问题的分析探讨

解决配电网存在的各种问题是提升企业效益和企业竞争力,满足城市发展的有效手段。结合西安供电局的实际数据,对城市配电网进行了调查研究,指出了城市配电网存在的主要问题,针对这些问题,提出了相应的对策。

采用LC滤波的大功率本安Buck开关变换器

随着矿井智能化的不断推进及安全级别的不断提高,本质安全型电气电子设备正被广泛推广使用,而其中的核心控制芯片所需的电压越来越低,所以对低压大功率本安电源的需求也就越来越大。为了提高本安Buck变换器的输出功率,采用了一种在基本本安Buck变换器的输出端附加LC滤波电路的方法,分析了采用LC滤波的大功率本安Buck变换器(LC-Buck变换器)的组成及工作原理,通过实验对比得出了本安LC-Buck变换器在同等条件下可以有效提高输出功率的结论。

大功率薄煤层智能化采煤机研制与应用

详细介绍了新型大功率薄煤层智能化采煤机的结构组成、技术参数、创新点、关键技术和现场应用情况,为薄煤层工作面提供了一种理想的机型。