Electric Energy Saving

Over all fuel condition and the money we spend on the said fuel leads us to think about savings. What can we do？ As individuals, we can educate our students and their family members. The easiest way to do that is to monitor their weekly spending for them. Together with their family members, the students have to monitor the consumption of electrical energy through three weeks. In the first week, they should spend electricity as they do everyday. During the second week they have the increase of spending of electrical energy. The third week is the saving energy week. They have to make a plan with their family members on how to save energy, for example, turning offthe lights in the empty rooms, turning offthe TV when there is no one watching it, etc.. Every week they have to note the data in kilowatts. When they acquire all the information and transform it into money they can see if it＇s worth saving electrical energy or not. They will see they don＇t have to give up the comforts of the modern life. The value of the project is in the fact that many households continue with the electrical energy saving. In fact, the number of the households is increasing.

Application Analysis of Energy Saving Measures in Oilfield Electrical Engineering

With the rapid development of the social economy,people are paying more and more attention to environmental issues.If society wants sustainable development,it must put energy conservation and emission reduction on the agenda.At this stage,China has vigorously promoted energy conservation and emission reduction,and all walks of life have gradually embarked on the green road of energy conservation.In recent years,energy saving measures has been widely used in China's oilfield electrical engineering.The author explores and analyzes the basic principles of energy saving measures applied in oilfield electrical engineering,and proposes an effective way to apply energy saving measures in oilfield electrical engineering,hoping to contribute to the energy saving effect of oilfield electrical engineering.

Electricity Pricing for Natural Gas CHP Projects The Higher, the Better?

Regarding the state's policy that gives a higher on-grid electricity price to natural gas CHP (combined heat and power) projects, this paper studies the effect of it on the operation of those projects by theoretical analysis and a case study. It concludes that on-grid electricity price on the high side, compared to heat price, will lead power plants to produce more electricity but less heat, thus causing decrease of the plants' thermal eff iciency and harm to energy saving of the whole society.

Fuel Saving and Emissions Cut Through Shore-Side Power Concept for High-speed Crafts at the Red Sea in Egypt

The progress of economic globalization,the rapid growth of international trade,and the maritime transportation has played an increasingly significant role in the international supply chain.As a result,worldwide seaports have suffered from a central problem,which appears in the form of massive amounts of fuel consumed and exhaust gas fumes emitted from the ships while berthed.Many ports have taken the necessary precautions to overcome this problem,while others still suffer due to the presence of technical and financial constraints.In this paper,the barriers,interconnection standards,rules,regulations,power sources,and economic and environmental analysis related to ships,shore-side power were studied in efforts to find a solution to overcome his problem.As a case study,this paper investigates the practicability,costs and benefits of switching from onboard ship auxiliary engines to shore-side power connection for high-speed crafts called Alkahera while berthed at the port of Safaga,Egypt.The results provide the national electricity grid concept as the best economical selection with 49.03 percent of annual cost saving.Moreover,environmentally,it could achieve an annual reduction in exhaust gas emissions of CO2,CO,NOx,P.M,and SO2by 276,2.32,18.87,0.825 and 3.84 tons,respectively.

Deployment of Electric Induction Technologies into Cooktops Plates as a Part of Energy Sustainability

For a long time now, humanity has been facing the phenomenon known as “climate change”, a major challenge of which we must be aware of what we are doing so as not to affect ourselves or future generations. It is evident that, if what is sought is a sustainable energy future, the current energy model implemented in certain countries and regions of the world is not the most adequate and makes the achievement of this goal unfeasible. This situation threatens to greatly alter our ecosystems and our social structures, and one of the key actions to mitigate it is, undeniably, the generalization of the use of renewable energy sources;and specifically, the non-conventional sources, referring to solar and wind, technologies that comply with the principle of energy complementarity;however, there are other possible solutions such as the deployment of programs that consider efficient cooking technologies;involving with it is everything related to energy security and equity, as well as environmental protection. In this article, as a technology to be considered to reduce and mitigate the Greenhouse Gases (GHG) emissions, an analysis of the efficiency assessment of electric induction cooktops and the determination of their potential energy savings are carried out. The impact of these results is taken into consideration and a series of conclusions and recommendations for improvement are issued.

Research on low-carbon development of electric power industry:from the perspectives of public policy

It is a fundamental way to achieve sustainable development and inclusive growth that China takes the low-carbon development path.And low-carbon development is an effective way to respond to many threats,including global climate anomalies,environmental degradation,and energy shortage.Low-carbon economy is policy economy to a large extent.Although the external environment demands low-carbon development of electric power industry,enterprises lack intrinsic motivation.Electric power industry is the pillar industry of China,and is one of the key industries for China's low-carbon development.The government needs to ensure its dominant position in the low-carbon development of electric power industry,and reform the government performance management system and promote the planning and management of electric power industry through appropriate public policy,in order to adjust the structure of the electric power industry and take a low-carbon development road with Chinese characteristics.

电动装载机转向系统电液流量匹配控制策略

针对电动装载机优先型流量放大转向系统单动工况下节流损耗严重的问题,提出了一种电液流量自适应匹配的节能型控制策略。首先,介绍了优先型流量放大转向系统工作原理;其次,建立转向系统能量损失模型;然后,提出转向系统电液流量匹配控制策略,实现液压泵输出流量与转向系统需求流量的匹配,并构建液压泵流量非线性映射补偿模型,提升流量控制精度;最后,利用AMESim软件搭建系统仿真模型,与原系统对比仿真分析。结果表明:改进后系统流量损耗降低62.68%,能量损耗减少65.26%,节能效果显著,为电动装载机的推广应用奠定基础。

基于规则的信号交叉口纯电动公交节能驾驶策略

为解决纯电动公交在通过信号交叉口时能耗较大的问题,本文提出一种旨在最小化电量消耗的基于规则的两阶段驾驶策略,能够实现通行策略场景的合理划分选择及充分优化加减速调整曲线凹凸性,同时,不牺牲乘客舒适度和通行时间。在策略第1阶段,结合车辆运行状态和通过车路协同技术获取的交叉口信号相位和时序信息,提出4种交叉口通行策略的划分与判断选择方式,包括匀速通过策略、加速通过策略、减速通过策略和制动停车策略;在策略第2阶段,利用基于XGBoost算法的能耗估算模型和基于加减速特征参数的曲线模型,优化策略场景中匀速过程、加速过程和减速过程的速度曲线;最后,结合VISSIM仿真验证4种通行策略的有效性。结果表明,所提出的策略可以有效减少电量消耗,在4种驾驶场景下,降低了29.8%~34.2%的能耗。此外,分析发现,在经济车速以上和以下的最佳速度节能曲线均为凹凸形曲线,因此,通过对比实验进行不同速度调整范围的最节能曲线凹凸性规律总结,该结论可以为纯电动公交车的节能驾驶提供更易于操作的驾驶引导。

城市轨道交通车辆基地用电节能新技术的应用

[目的]车辆基地用电量占城市轨道交通总用电量的比例较大。为了降低车辆基地的用电量,需结合用电节能新技术研究其在城市轨道交通车辆基地中的应用。[方法]通过分析车辆基地的功能布局和设备设施用电量,结合用电节能新技术的应用状况,对光能技术、节能灯具技术及智能照明控制技术等在车辆基地中应用的可行性进行了研究,分析了太阳能加热器、光伏发电设施、管道式日光照明系统、高大厂房光源、智能照明控制系统等的节能效果及效益。[结果及结论]太阳能加热器、光伏发电设施及管道式日光照明系统等用电节能新技术在车辆基地的应用中能够取得显著的节能效果;无极灯在车辆基地高大厂房的应用中具有较强优势,能避免产生大面积的光晕现象,较金卤灯年节省用电量39.8%;智能照明控制系统可对车辆基地照明系统实现智能管理和控制,使车辆基地照明按最佳经济方式运行,较非智能照明系统可节能10%~20%,有效降低了运营成本。

基于Vogit力学模型的照明系统节能控制研究

采用Vogit力学模型,构建照明系统离散动力学方程,分析照明系统状态空间变化特征,估计照明系统负载;引入电流灵敏度参量,结合照明系统电磁耦合特性,构建照明系统节能控制模型;通过自适应迭代处理实现自适应寻优,获取照明系统内环控制输出增益;根据照明系统节能控制带恒功率负载等效原理消除复阻抗,达到节能控制稳定的目的。以照明系统作为实验对象进行实验,结果表明该方法的节能控制效果较好,能够有效确保照明系统节能控制的稳定性。

电气节能与新能源技术的应用

随着电力电子技术的发展,电能逐渐被广泛应用于各个领域。在能源紧缺的时代背景下,加强电气节能技术应用,发展新能源技术,不仅能够缓解当前电能紧缺的问题,也能提升能源的利用率。本文阐述了电气节能与新能源技术应用的意义,探讨了电气节能技术的应用策略,围绕新能源技术应用于电信领域提出了几点措施。

电动车废热辅助空调系统的研究

针对目前电动车空调存在的节能性和低温适应性等问题,提出了一种电动车废热辅助热泵空调系统。该系统将多变频器协调控制技术、双级压缩循环技术、废热辅助热泵技术有机融合,通过仿真分析研究系统在不同运行状态下的系统性能。仿真结果表明:协调调节低压级压缩机和风扇电机的频率,可实现系统制冷/制热量和能效比的优化控制;合理设置单双级压缩的温度切换点,能提升制热性能、保证系统在低温工况下的可靠运行;利用废热辅助空气源热泵技术,能实现系统的节能。研究结果为减小空调系统对电动车续航里程的影响、推动电动车的普及提供了参考。

电气控制技术在节水灌溉装置中的应用研究

以节水灌溉装置自动控制为研究对象,基于电气控制技术对灌溉装置控制系统硬件电路进行了设计,并对节水灌溉装置系统自动控制流程软件进行设计。工作时,传感器对种植区域内的温度和湿度参数进行采集,控制系统根据参数信息进行灌溉操作,可有效提高种植过程中的水资源利用率。所设计的控制系统能够将种植区域内的环境参数信息进行实时显示,便于系统应用人员进行操作控制。

煤矿用带式输送机电气控制系统设计优化

针对传统的煤矿用带式输送机电气控制系统已经无法满足现在煤矿生产的需求的问题,通过对电气控制系统现状的分析,提出了带式输送机的电气控制系统升级优化方案,从软件、硬件、性能、节能方面对其进行设计改进,全面提高其运行效率、可靠性、节能性和安全性。

湿法脱硫后烟气和浆液余热回收技术研究进展

低品位余热高效深度利用是促进燃煤电站进一步节能减排的关键之一,湿法脱硫后的低温饱和湿烟气蕴含大量潜热和水资源,大量脱硫浆液吸收烟气热量后温度升高。烟气与浆液具有巨大的余热利用和水资源回收的潜力,若直接排放烟气,直接排出浆液,不但造成资源浪费,还容易引发“白色烟羽”污染环境。本文以湿法脱硫后饱和湿烟气和脱硫浆液为研究对象,针对目前湿法脱硫技术余热回收效率低、利用难以匹配冷源等困境,总结了国内外针对脱硫后烟气水热回收和浆液余热回收技术及发展方向,研究中针对浆液余热利用仍待发展。其中,直接冷凝烟气和浆液技术和热泵技术成熟,应用广泛;溶液吸收技术能源利用率高,烟气腐蚀性低;烟气膜分离技术、浆液闪蒸、热泵技术清洁环保,回收质量高。直接冷凝烟气、浆液技术和膜分离技术需要进一步提高抗腐蚀性和转换效率;浆液闪蒸、热泵技术能耗较高,吸收式热泵技术仍需寻找高效安全环保无毒的吸收溶液。最后,探讨了目前脱硫浆液余热利用的主要方式及存在问题,回收余热主要用于供暖和电厂内部热利用,以期进一步推动湿法脱硫后烟气与浆液余热回收利用,实现燃煤电站的深度节能减排。

燃气发电厂电气能耗分析与节能降耗措施研究

该文依据近年来国际能源形势和国家的能源政策并结合燃气发电厂的特性,从企业生产成本、运营管理规范性、电磁损耗、辅机电气损耗和照明电气损耗等角度出发,对燃气发电厂存在的电气节能降耗问题进行探究分析,并提出具体的节能降耗措施。分析表明,通过优化电气设备的性能和管理模式,可以达到节能降耗和提高燃气电厂的经济效益的目的。

燃油车和纯电车混杂智能网联队列系统的节能与稳定控制

提出了一种燃油汽车和纯电动汽车混杂的异构智能网联队列系统节能策略与稳定控制方法。考虑了异质车辆动力学特征、通讯时滞和外界干扰等多重不利因素对队列稳定性的影响,建立了异质车辆队列非线性系统动力学模型和能耗模型;基于能耗成本和后退动态规划方法,推导出了单车经济车速;依据所提出的节能型车间距策略,构建了状态跟踪误差系统;基于连续时间域分布式鲁棒控制方法,给出了在干扰和信息时滞下的队列系统稳定判据。对包含4辆跟随车的混杂队列系统进行仿真测试。结果表明:在保持队列系统稳定的前提下,4辆跟随车辆节能效果分别提高1.90%、1.25%、19.11%和12.22%。

采用节能导线的输电线路全寿命周期成本分析

近20年来,全国输电线路的长度显著增长,在线路工程建设中,经济性成本是至关重要的考量因素之一。通过构建输电线路工程全寿命周期成本量化模型,对辽宁省A市某220 kV新建线路工程采用JL/G1A-400/35型钢芯铝绞线及JL(GD)/G1A-400/35型钢芯高导电率铝绞线下的经济成本差异进行对比分析。采用线性回归分析、灰色预测GM(1,1)模型以及自回归差分移动平均(autoregressive integrated moving average,ARIMA)模型对工程运行期输电线路的负荷水平进行预测,得出组合预测分析方法下线路工程的售电效益;同时,量化节能导线的减碳效益,分析负荷增长水平、天气、海拔及投资折现率对线路运行成本的灵敏度,对比评估2种导线技术方案的经济性指标。研究结果表明,作为一种节能导线,钢芯高导电率铝绞线可以降低输电线路工程的运行维护成本,在考虑售电效益的同时为线路工程带来额外的减碳效益,在工程的全寿命周期内具有良好的经济性及低碳性。

光伏新能源技术在电气节能中的应用效果调研分析

为提升清洁能源的利用效率,并研究光伏新能源在电气节能中的应用效果。该文通过对多个光伏发电项目的应用进行调研和分析,并结合实际案例对不同光伏发电项目的应用效果进行评价。结果表明,在电气节能中应用光伏新能源技术具有安全性无污染、供电稳定、减少能源消耗等明显优势。说明在电气节能中应用光伏发电技术,能够有效提升清洁能源的利用效率。并且光伏发电系统的长期投资回报率明显优于传统发电系统。