板坯连铸机冷却水系统的完善与应用

针对北方某厂板坯连铸机生产状况，对其软水冷却系统、设备净环水冷却系统和二次喷淋浊环水冷却系统进行了研究分析，提出了冷却水系统的完善方案，解决了连铸水系统的稳定性，避免了频繁开停泵对连铸水系统高压电机的冲击及冬季长时间停机或检修造成设备和管道系统内部滞水而冻结，提高了事故处理的灵活性和环境适应性。     

混合式入侵检测系统的研究

介绍了基于网络的和基于主机的入侵检测系统各自的特点，分析了这两种入侵检测系统存在的问题，给出了一种混合式入侵检测系统的解决方案，并对混合式入侵检测系统的组成及其功能进行了详细的分析研究，最后对本系统的特点作了简单的总结。     

200MW汽轮机组新增DEH调节系统

介绍２００ＭＷ汽轮机组新增ＤＥＨ调节系统的基本调整功能，系统启动运行操作方式，以及ＤＥＨ系统与机械液压调节系统双向互切技术。根据运行状况，对ＤＥＨ调节系统的运行效果进行评价。     

东方着台300MW汽轮机设计介绍

本文为东方汽轮机厂第一台东方型３００ＭＷ汽轮机设计总体介绍，除对机组本体的技术规范和经济指标作了说明外，文章还对３００ＭＷ机组采用的调节，辅机和旁路系统作了详尽的叙述。     

化纤厂节能问题探讨

根据化纤厂暖通空调系统是企业能耗大户的特点，对热力系统冷凝水回收利用与采暖耗能、冷冻系统制冷机组本身性能优化及工艺运行调节、冷冻水和冷却水系统的水质控制及循环冷却塔的性能优化、空调系统过渡季节节能等方面进行分析，总结出耗能原因，并提出相应的节能措施。     

一台410T/H循环流化床锅炉的设计和运行特点

四川内江白马发电总厂高坝电厂410T，H循环流化床锅炉系芬兰奥斯龙公司（Ahlstrom）制造，是我国首座循环流化床锅炉环保示范电站。本文介绍了该锅炉的设计特点，对国内同类型锅炉的设计和运行具有指导意义。     

汽油发动机电控系统的应用研究

汽油机电控系统，不仅具备适应发动机各种工况变化的燃油喷射控制功能，还能对电子点火，怠速转速等进行控制。且详细介绍了系统的结构，各功能的控制原理及方法，并给出较理想的试验结果。     

汽油机TWC系统早期失效原因及对策

本文通过对汽油机TWC（三元催化系统）结构的介绍，重点分析了造成WC早期失效的原因，并阐述了为防止TWC早期失效在设计，与汽油机匹配，使用及维护等几方面的对策。     

转炉炼钢厂照明系统改造

对转炉炼钢厂照明系统的现状进行了分析，针对不同区域的照明要求，采取了相应的线路改造和照明控制办法，消除了常明灯现象，减少了灯具消耗，大大节约了照明费用的支出。     

内燃机参数测试的数据采集系统

配方介绍了一种应用于内燃机实验台上的内燃机参数采集方法，叙述了为实现该参数采集，利用设备的接口函数编写数据采集程序，并对采集到的数据进行处理、分析的过程。实现了多参数在线实要集数据。     

Optimal sizing of stand-alone hybrid systems based on PV/WT/FC by using several methodologies

This paper presents a comparative study of four sizing methods for a stand-alone hybrid generation system integrating renewable energies (photovoltaic panels and wind turbine) and backup and storage system based on battery and hydrogen (fuel cell, electrolyzer and hydrogen storage tank). Two of them perform a technical sizing. In one case, the sizing is based on basic equations, and in the other case, an optimal technical sizing is achieved by using Simulink Design Optimization. The other two methods perform an optimal techno-economical sizing by using the hybrid system optimization software HOMER and HOGA, respectively. These methods have been applied to design a stand-alone hybrid system which supplies the load energy demand during a year. A MATLAB-Simulink model of the hybrid system has been used to simulate the performance of hybrid system designed by each method for the stand-alone application under study in this work. The results are reported and discussed in the paper.     

Operation strategy of residential centralized photovoltaic system in remote areas

Photovoltaic (PV) systems have found fairly wide application in remote isolated area. However, each individual PV system usually supplies energy only to one consumer. In such a case we have several consumers that each one of them uses a stand-alone PV system. This situation would expose such stand-alone systems to transient excessive loads larger than the power generated by the PVs, and then the battery is bound to discharge even during the day. For overcoming this problem, we suggest an autonomous centralized PV system, comprising one battery bank and plural subsystems connected to each other. From solar radiation data and load profiles, the performance of the PV centralized system is simulated by using a time step scheme. The advantages of this system are found to be the large charging rate of power, high efficiency, and low cost compared with conventional individual PV systems and hybrid systems. In addition, the economic study shows that the life cycle cost and the price of kilowatt hour generated in the centralized system is lower than that for the individual systems.     

光伏系统蓄电池组不均衡性的故障分析及排除

蓄电池组是光伏系统的重要设备,其故障往往导致光伏系统不能正常运行。光伏系统蓄电池组的故障多数因其不均衡所致。文章分析了蓄电池组因不均衡性导致的故障,提出了故障预防措施和故障排除方法。     

Stability Analysis of Closed-loop Water System

Aiming at closed-loop water system, by the method that shutting certain subcircuit, and solving the piping network, computing flow deviation of other subcircuits, then analyzing the rules of variation of stability with various factors, following conclusions are obtained: When reducing the resistance in main pipes, increasing resistance of subcircuits, system stability can be improved. Centralized regulation by changing power has no influence on system stability; centralized regulation by changing resistances will decrease system stability. Pump characteristics curve influences system stability, stability of the flat characteristic is superior to the steep one. For direct return system (DRS), the stability of subcircuit which is farthest from the heat source is the worst. For reverse return system (RRS), the stability of subcircuit in the middle of the pipe-network has the worst stability. Overall, stability of RRS is inferior to that of DRS.     

350MW机组协调控制系统分析

七台河发电厂进口350MW汽轮机组的DCS分散控制系统采用的是HONEYWELL公司的TPS系统，协调控制系统作为TPS系统的一部分，被称之为MCS，MCS覆盖了整个锅炉侧的自动调节及部分汽机侧的调节系统。MCS控制策略主要由HPM（高性能过程管理器）实现，对七台河发电厂350MW机组协调控制系统进行了分析，介绍了相关的控制策略和逻辑关系。     

热化学蓄热系统研究进展

热化学蓄热通过可逆化学反应来储存和释放热量,其蓄热密度高于显热蓄热和相变蓄热,且能够实现能量的长期储存,在未来能源利用领域具有广阔前景。根据热化学蓄热系统的结构,可将其分为开式系统和闭式系统。本文针对开式系统和闭式系统,对蓄热材料、环境气氛条件、反应过程优化以及反应器设计等影响系统性能的重要因素进行概述与讨论,为热化学蓄热系统的发展和实际应用提供参考。     

The 10 years operation of a PV-micro-hydro hybrid system in Taratak, Indonesia

A 48–71.1 kWp photovoltaic-micro-hydro system has been installed at Taratak, Indonesia since June 10, 1989. The system is being developed in Indonesia to obtain optimal result by combining the advantages of both energy conversion systems. The photovoltaic works as a dominant part in this hybrid system. However, the micro-hydro sub-system works to compensate the inconvenience found in the photovoltaic. It will anticipate the weather uncertainty and fulfill the need during the peak load. In this paper we analyze and evaluate the performance of a PV-micro-hydro (PV-MH) system in Taratak. We find the difference between the initial design and the actual system operation. Results of the evaluation show that the performance of PV-MH system operation is still optimal.     

基于MATLAB的电力系统暂态稳定性仿真研究

介绍了电力系统的暂态稳定、MATLAB环境下Simulink动态仿真工具、电力系统工具箱的功能和特点及仿真数学模型。运用MATLAB电力系统仿真模块集SimPowerSystems构建了三机系统的Simulink模型,通过对电力系统故障仿真分析,表明了该模型能较准确直观地考察暂态过程中电力系统的动态特性,说明了Matlab在电力系统仿真中的强大功能。     

区域环境系统规划的灰色方法

本文以厦门市饮用水源流域农业非点源污染控制规划为实例,探讨了流域环境系统规划的灰色方法问题。主要报告了如何建立灰色规划模型,如何求取规划模型的灰色解,如何将灰色规划解应用于流域规划等。文中介绍的求解灰色规划解的方法是一种近似方法,但十分有效,可以应用于求解类似的规划问题。研究表明,对流域环境系统进行灰色规划更加合理和可靠,用灰色系统理论研究区域环境系统的规划问题具有美好的前景。     

Design and implementation of a hybrid electric motorcycle management system

This paper presents a successful design and implement of a shunt-winding hybrid electric motorcycle management system which utilizes an electronic control unit (ECU) to integrate two major subsystems together, one being the traditional system of 125 c.c. internal combustion engine and the other an electric power motor. The hybrid electric motorcycle is assembled together robustly by these two major subsystems and eventually leads to successful road tests. The hybrid power system thus implemented can recharge its own batteries with electricity provided by the electrical recharge system and thus increasing the cruising mileages largely. The testing results obtained by using the proposed experimental platform indicate that lead-acid cells can boost their state of charge (SOC) by approximately 4% when it is operated under the hybrid mode for four driving cycles (about 1600 s) with the recharger on in a standard ECE-40 testing procedure. The results of road tests also clearly show that the pollutant emissions of the engine can be reduced at a lower speed or idling condition, and the problem of insufficient cruising range for electric motorcycles can also be greatly enhanced.