Selecting the Best Compatible SVC Type in Power Systems for transient Stability

Considering the increased trend to use renewable energy to meet electrical energy demands, a reliable performance also should be adopted in transmitting the generated power through the stable transmission and subtransmission systems for which nowadays Flexible AC Transmission System (FACTS) controllers are used extensively. Transient stability is one of the most important issues in power system stability analysis. FACTS devices have confirmed their capabilities in various aspects in power networks. In this paper, to improve transient stability of power systems, a shunt connected FACTS devices have been introduced, i.e., Static VAR compensators (SVCs). The SVC has the most diversified branches among FACTS devices. The main aim of this work is to study and analyze the impact of eight branches of SVC on improvement of transient stability and to choose the best of them. Simulations are performed in MATLAB/SIMULINK environment.     

A Heat Dynamic Model for Intelligent Heating of Buildings

This article presents a heat dynamic model for prediction of the indoor temperature in an office building. The model has been used in several flexible load applications, where the indoor temperature is allowed to vary around a given reference to provide power system services by shifting the heating of the building in time. This way the thermal mass of the building can be used to absorb energy from renewable energy source when available and postpone heating in periods with lack of renewable energy generation. The model is used in a model predictive controller to ensure the residential comfort over a given prediction horizon.     

Depollution benchmarks for capacitors,batteries and printed wiring boards from waste electrical and electronic equipment (WEEE)

The article compiles and analyses sample data for toxic components removed from waste electronic and electrical equipment (WEEE) from more than 30 recycling companies in Switzerland over the past ten years. According to European and Swiss legislation, toxic components like batteries, capacitors and printed wiring boards have to be removed from WEEE. The control bodies of the Swiss take back schemes have been monitoring the activities of WEEE recyclers in Switzerland for about 15 years. All recyclers have to provide annual mass balance data for every year of operation. From this data, percentage shares of removed batteries and capacitors are calculated in relation to the amount of each respective WEEE category treated. A rationale is developed, why such an indicator should not be calculated for printed wiring boards. The distributions of these de-pollution indicators are analysed and their suitability for defining lower threshold values and benchmarks for the depollution of WEEE is discussed. Recommendations for benchmarks and threshold values for the removal of capacitors and batteries are given.     

装备制造企业华宏科技助推我国再生资源产业化发展

江苏华宏科技股份有限公司是国内物资回收加工机械生产的龙头企业，业内唯一的上市公司。介绍了华宏科技“十一五”以来的主要成就及“十二五”以后的发展愿景，华宏公司为我国循环经济全面推进和再生资源产业化发展做出积极贡献。     

我国废弃电子电器产品的回收体系研究

分析了废弃电子电器产品的特点，介绍了国内外废弃电丰电器产品的回收处理现状，结合生产者责任延伸制度，从观念、法律、管理、企业、收费等方面对我国废弃电子电器产品回收体系的建设进行了探讨，并提出了建议。     

广播媒介在灾害救助中的积极作用——基于汶川等十县市的调查结果

灾害事件发生后,信息的有效传播对于灾害救助意义重大.灾害事件往往伴随电力、交通、通讯的中断,导致许多传播媒介无法发挥作用,而广播媒介因其较强的抗灾害能力在灾害信息传播过程中保持了相对畅通,成为灾害救助的重要媒介.本文介绍了广播媒介在自我救助、专业救助和社会救助中的不同作用,进一步探讨了几种常见的传播媒介的抗灾害能力,并针对广播媒介在灾害救助中存在的问题提出了一些建议.     

安全管理学及其实验课程设计研究

针对目前本科教学中普遍存在的问题,构建以行为科学为基础、人的行为为主线的安全管理学课程内容,形成独立、独特的课程体系,从组织整体到员工个体提出操作性很强的管理思路和方法。为让学生掌握"组织安全管理方案诊断"和"个人不安全行为纠正"两大事故预防的行为科学策略,在全国高校中率先创新,开设专门的实验课程,设计实验内容,开发实验设备(已获国家专利),建成了专门实验室。笔者重点介绍安全管理方案诊断实验。通过实验,学生可以模拟企业角色,从不同的角度考虑如何进行安全管理、有效预防事故,同时对实验数据的深入分析实现了对整个课程知识的综合和复习。     

现代竹结构房屋室内空气品质的实测与研究

首次对湖南大学现代竹木及组合结构研究所肖岩教授课题组研发的一栋现代竹结构房屋室内空气品质在竹材板裸露的最不利状况下进行了实测.利用甲醛分析仪检测和大气采样仪采样及气相色谱仪分析,可以判断常见的有害物质有无并测得浓度.结果表明,这种建筑在竹板材裸露而没有粘贴防火石膏板材的条件下,室内空气中含有微量的污染物质,而且根据房间的大小和通风状况有显著性差异.但即使在竹胶合板材裸露而没有内装修的条件下,各种有机污染物质的浓度都很低,完全满足国家相关空气质量标准的要求.     

设备加速试验可靠寿命的小样本评估方法

针对高可靠长寿命设备加速寿命试验,在试验样本量很少的情况下,用传统评估方法对其可靠寿命的评估存在精度不足问题。笔者在分析比较单侧容限系数和二维单侧容限系数方法后,提出设备寿命基于正态分布的加速试验可靠寿命小样本评估方法。该方法可以把设备研制过程中以往积累的试验数据和同类型的实验数据综合利用起来,以增大评估设备可靠寿命的数据量。工程应用表明,该方法与传统大样本评估方法相比,在试验设备数量一定的情况下,可靠寿命的评估精度提高至少一倍。     

屏蔽室环境工况对传导骚扰测量的影响

建立工况可调屏蔽室：安装恒温恒湿系统，实现温度在（10～35）℃连续可调、测量空间温度场均匀度和最大波动均〈10℃，湿度控制在（30～60）％范围。利用工况可调屏蔽室，研究温湿度对传导骚扰测试结果的影响：选取电动工具、空调（变频、定频）、除湿机等产品，研究不同产品传导骚扰电压与谐波随环境温湿度的变化规律，发现骚扰电压和谐波测量值随环境温度的变化有很大的不同，试验证明这些产品的传导骚扰电压和谐波测量值明显随着环境温度而变化。研究结果对提高，实验室电磁兼容测试水平具有良好的实用价值，对于相关标准的制修订具有参考价值。