基于MSA的发动机冷试测量系统的研究

基于测量系统分析(MSA)方法,以发动机冷试测量系统为例,梳理了测量系统的分析流程,介绍了冷测试系统的分析方法。采用样本控制图、独立样本分析法和方差分析法对冷试测量系统稳定性、偏倚、线性、重复性和再现性(RR)进行了深入研究,利用鱼骨刺图对影响测量系统精确性的因素进行修正和完善,通过验证进一步提高了测量系统的可靠性。     

基于DSP的光伏数据采集系统的研究和设计

基于太阳能光伏发电技术,结合霍尔传感器,485总线和232总线的特征,设计了一个较为简单的数据采集系统,给出了系统硬件框图及软件流程图,可以实现对光伏发电系统的实时监控,完成对光伏系统的常规电压、电流与功率等数据的测量、计算、显示、存储功能。对设计出的系统进行了验证,结果表明系统有效。     

开关磁阻电机驱动系统的发展及应用

开关磁阻电机驱动（SRD）系统是继变频驱动系统、无换向器电动机驱动系统之后发展起来的一种新型的、性价比很高的节能调速控制系统。本文就SRD系统的组成、结构、工作原理、特点、国内外的发展情况进行了系统的论述,对目前SRD系统存在的问题及研究课题进行了分析。同时,为推广应用SRD系统提出了一些建议和意见,可供有关人员和企业系统了解及推广应用SRD系统做参考。     

轴流式压气机参数采集系统的设计与实现

介绍了轴流式压气机参数采集系统的设计原理,基于Visual C＋＋开发了参数采集分析软件,系统由实验压气机、采集系统、控制系统等分系统组成。重点介绍了采集系统和软件设计,实现了一种高精度、高可靠性、数字化的压气机参数采集方法。     

基于介质阻挡放电原理的安瓿瓶检漏系统研究

为了克服传统系统存在的问题,提出了改进安瓿瓶检漏系统的设计方法。分析了安瓿瓶检漏系统的工作原理以及和介质阻挡放电的原理与特性,分析了安瓿瓶检漏系统的电路原理,概述了影响检漏精度的各种因素,依据整流电路、软启动电路、直流调压电路、单相全桥逆变电路、保护电路、放电电路、嵌入式监控系统和上位机监控系统介绍了各模块的设计,完善了系统总体设计方案。这些研究成果为安瓿瓶检漏系统的设计与实现提供了一定的参考。     

燃油火烟系统的余热利用

阐述了大型食堂燃油火烟余热利用系统中的气水热交换系统、供热水系统、循环水加热系统,智能控制系统以及相关的配套系统的设计技术和制作方法。     

浅谈智能小区的弱电系统设计

从智能小区的安全性及智能化家庭建设的角度出发对综合布线系统、保安监控系统、有线电视系统、三表计量系统等弱电系统进行了综合阐述。     

提高有杆泵采油系统效率方法的探讨

结合油田生产工作实际 ,着重分析了机械采油系统有杆泵系统效率的组成、有杆泵理论系统效率、有杆泵实际系统效率、机械采油井系统效率测试及其计算方法 ,并对影响机械采油有杆泵系统效率十个方面的主要因素进行了分析 ,提出了提高抽油机井系统效率的方法和途径     

水环热泵空调系统的应用与优化设计

介绍了水环热泵空调系统的组成、工作原理 ,并对该系统作了节能性分析 ,总结出该系统的适应性、经济性 ,最后提出了水环热泵空调系统的优化设计方法     

基于温度检测的水泵磨损状态监测系统的设计

针对电站水泵长期处于高负荷的工作情况,设计了一套基于温度检测的水泵磨损状态在线监测系统。根据系统功能分析,从终端设备层、控制站层、人机接口层三个层级对系统进行了设计。系统符合冗余配置原则、多样性原则、故障安全原则等。规划了系统经过长时间运行,积累了大量数据之后可以进行的数据挖掘工作。这对于提升系统的智能化程度以及判断准确性都具有重要作用。     

全球能量平衡体系的构建与仿生型能量转换装置的提出

介绍了世界能源结构的现状及发展趋势,指出了能源消耗与环境、人类发展之间的矛盾.在概括目前人类缓解这一矛盾的主要措施时,提及了形成能源现状的某些因素.提出了解决上述矛盾的新方法-构建全球能量平衡体系,并建立了该平衡体系的模型,分析了其优缺点和可行性.简要介绍了目前生物质能的利用状况,给出了该平衡体系的关键环节-仿生型能量转换装置的概念,并进行了该装置与传统热机的优缺点对比.最后,简单分析了构建全球能量平衡体系需要解决的技术和其它关键问题。     

储能技术在冷热电三联供系统中的研究现状与应用

冷热电三联供（CCHP）系统是利用一次能源或可再生能源发电,并通过多种余热回收设备高效利用余热,建立在能源的综合梯级利用基础上的产能系统。用户负荷动态变化及可再生能源输出不稳定会导致冷热电联供系统供、需侧能量不匹配,储能技术可有效解决该问题。本文总结了CCHP系统中储能技术类型及其研究现状,阐明了CCHP系统中电能储存和热能储存技术的应用方式。指出在传统能源与可再生能源相结合、供能系统越发复杂化的能源发展态势下,系统特性、配置优化和对不同场景制定出运行策略是储能技术与CCHP集成系统未来的研究方向。     

Research on optimal confguration of hybrid energy storage capacity for wind-solar generation system

储能系统可以有效解决微电网中分布式可再生能源特别是风光互补发电的间歇性、波动性以及“源”与“荷”错位的问题。不同储能技术在响应时间、容量规模、技术成熟度及成本等方面各有特点,两种或多种储能技术耦合将可以更有效地满足用电系统的技术性和经济性的要求。针对电力用户对分布式可再生能源的利用情况,本文提出一种由压缩空气储能、锂电池和超级电容器组成的混合储能系统,建立了三种储能的数学模型,针对其不同的特性,提出了基于二次移动平均滤波的储能系统功率分配方法和基于连续性运行的容量优化配置方法。基于某个实际的用户负荷进行了案例分析,得到了混合储能系统的功率和容量配置结果,并分析了其运行特性。研究表明,在分布式可再生能源微电网中,多种储能技术耦合既能充分发挥每种储能的优势,又可以通过相互配合弥补各自的劣势,这对于可再生能源的充分利用和满足用电负荷的严苛需求具有重要的作用和意义,在分布式能源利用领域具有较好的工程应用前景。     

Renewable energy strategies for sustainable development

This paper discusses the perspective of renewable energy (wind, solar, wave and biomass) in the making of strategies for a sustainable development. Such strategies typically involve three major technological changes: energy savings on the demand side, efficiency improvements in the energy production, and replacement of fossil fuels by various sources of renewable energy. Consequently, large-scale renewable energy implementation plans must include strategies for integrating renewable sources in coherent energy systems influenced by energy savings and efficiency measures. Based on the case of Denmark, this paper discusses the problems and perspectives of converting present energy systems into a 100% renewable energy system. The conclusion is that such development is possible. The necessary renewable energy sources are present, and if further technological improvements of the energy system are achieved the renewable energy system can be created. Especially technologies of converting the transportation sector and the introduction of flexible energy system technologies are crucial.     

风电与储能联合运行的碳减排效果

在全球能源危机和环境污染的背景下,风电—储能联合运行系统对电力行业的节能减排有重大影响。将风电和储能变量同时引入供给函数均衡模型来模拟风电—储能联合运行系统提供的基荷电量,并在此基础上通过情景分析分别估算了发电企业在风电系统、储能系统及风电—储能联合运行系统3种情景下的污染气体排放量。结果表明,各发电企业在利益最大化目标的驱使下将不断增加储能量,使得联合运行系统比单独的风电或储能系统具有更高的排放量,且排放量的大小受储能容量的影响。     

天然气冷热电三联供系统的发展趋势分析

天然气冷热电联供系统是以天然气为一次能源建立在能量梯级利用基础的多联产总能系统.介绍了天然气三联供系统系统的组成、设计模型及配置方式,通过对比现存的典型三联供系统,得出了目前系统发展的难点并提出了相应的解决措施.最后针对如何提高三联供系统的经济性,充分发挥三联供系统的优势进行了探讨分析,提出了新型的三联供系统形式：可再生能源三联供系统,基于天然气三联供的能源集成系统以及能源总线系统.     

Potential of renewable energy systems in China

Along with high-speed economic development and increasing energy consumption, the Chinese Government faces a growing pressure to maintain the balance between energy supply and demand. In 2009, China has become both the largest energy consumer and CO₂ emitting country in the world. In this case, the inappropriate energy consumption structure should be changed. As an alternative, a suitable infrastructure for the implementation of renewable energy may serve as a long-term sustainable solution. The perspective of a 100% renewable energy system has been analyzed and discussed in some countries previously. In this process, assessment of domestic renewable energy sources is the first step. Then appropriate methodologies are needed to perform energy system analyses involving the integration of more sustainable strategies. Denmark may serve as an example of how sustainable strategies can be implemented. The Danish system has demonstrated the possibility of converting into a 100% renewable energy system. This paper discusses the perspective of renewable energy in China firstly, and then analyses whether it is suitable to adopt similar methodologies applied in other countries as China approaches a renewable energy system. The conclusion is that China’s domestic renewable energy sources are abundant and show the possibility to cover future energy demand; the methodologies used to analyse a 100% renewable energy system are applicable in China. Therefore, proposing an analysis of a 100% renewable energy system in China is not unreasonable.     

Optimal green energy management for island resorts in Malaysia

This paper proposes optimum green energy systems for electricity generation of island resorts in Malaysia. A combination of solar energy and wind energy as intermittent renewable energy sources with a fuel cell (FC) system and a battery storage energy system as a backup to the green energy system is introduced for this study. This system is eco-friendly, economical over the long-term, highly sustainable and reliable. In addition, a diesel-based energy system as a non-green system is compared with the proposed green system. National Renewable Energy Laboratory's (NREL) HOMER software is used to determine and compare the optimal configuration green energy system with the diesel-based energy system in terms of net present cost, sensitivity analysis and pollutant gas emission. The feasibility and assessment of the proposed system is evaluated by utilizing the load profile and considering the geographical condition of a village (Juara village in Tioman Island) with approximately 30 chalets located in southern Malaysia. HOMER uses two types of load profiles for each given year. The first load profile is used during the presence of tourists, and the second profile is used when the locals are the main inhabitants of the island. The optimization management for the green energy system is performed through unit sizing to find the optimum power management analysis and to perform cost analysis of the system.The potential of renewable energy as well as a diesel-based energy system to meet the power demand for such a stand-alone system is considered. Technically feasible and economically viable green energy systems as prospective plans are explored in this study.     

Modeling and design of a solar thermal system for hybrid cooking application

This paper proposes a hybrid solar cooking system where the solar energy is brought to the kitchen. The energy source is a combination of the solar thermal energy and the Liquefied Petroleum Gas (LPG) that is in common use in kitchens. The solar thermal energy is transferred to the kitchen by means of a circulating fluid. The transfer of solar heat is a twofold process wherein the energy from the collector is transferred first to an intermediate energy storage buffer and the energy is subsequently transferred from the buffer to the cooking load. There are three parameters that are controlled in order to maximize the energy transfer from the collector to the load viz. the fluid flow rate from collector to buffer, fluid flow rate from buffer to load and the diameter of the pipes. This is a complex multi energy domain system comprising energy flow across several domains such as thermal, electrical and hydraulic. The entire system is modeled using the bond graph approach with seamless integration of the power flow in these domains. A method to estimate different parameters of the practical cooking system is also explained. Design and life cycle costing of the system is also discussed. The modeled system is simulated and the results are validated experimentally.     

Review on key technologies and applications of hydrogen energy storage system

随着国内以风电,太阳能为主的可再生能源快速增长,可再生能源消纳能力不足和并网困难等问题愈发突出,大规模储能系统被证实是解决该问题的有效方法.本文回顾了现有成熟储能系统的不足与限制,分析氢储能的优势特点,构建了电能链和氢产业链融合的氢储能系统,为可再生能源的进一步发展提供良策.随后对氢储能系统三个环节(制氢,储运氢,氢发电)关键技术进行了梳理,对电解槽技术,燃料电池技术和储氢材料中的关键性能进行了比较和评估.在氢储能领域,部分发达国家已经初步形成了从基础研究,应用研究到示范演示的全方位格局,本文对德国和法国的重点示范工程进行了调研,为我国未来发展氢储能的提供参考.