防雷在新机场的应用

本文介绍广州新白云国际机场航站楼的建筑物防雷，建筑物防雷是建筑中比较常见的保护措施，而广州新白云国际机场建筑物的防雷，也有它的优点和特色。     

Urbanization pressure and modeling of urban growth: example of the Tunis Metropolitan Area

Urbanization process is a major factor of change in the Mediterranean region where pre-urban cities and new urban settlements have raised over the past decades. Several cities rapidly became regional centres or international nodes according to economic and political pressures. Urbanization (and informal settlement) causes land cover changes which can lead to deeper social, economic and environmental changes. The main objective of this paper is to provide time-series information to define and locate the evolution trends of the Tunis Metropolitan Area. In a first step, satellite imagery has been used (1986-1996 SPOT XS) to extract the land cover, identify the urbanization processes and estimate the changes. One of the main aspects is to locate informal settlement areas that grow significantly along the roadway networks in the Tunisian capital. Results show a global progression of the built-up areas of 13% in 10 years. In a second step, the urban growth evolution has been approached by using a potential model that provides general trends of feasible urban expansion, taking into account protection laws of natural and agricultural land. This type of model has not been tested on developing cities and as such it corresponds to a new planning contribution for planners who have no concept of spatially how their urban areas have changed over time and where the growth is occurring. In this case, it has been calibrated over the period of 1986-1996, and then applied to predict the location of the built-up growth over the next 10 years (1996-2006). These results can provide local authorities and other stakeholders with information towards decision support documents for future planning and monitoring plans. Moreover, they can be updated systematically through the integration of remote sensing data.     

基于脆性势函数对复杂系统的脆性分析

本文主要是针对于存在于复杂系统中的脆性问题进行分析，给出了有关脆性问题方面的有关定义，在进行分析的过程中，我们采用的是突变理论的势函数来进行复杂系统的脆性分析的，此种方法是本文首次提出的，具有新颖性与创新性。     

基于Agent的分布式钻井事故诊断系统模型研究

针对石油钻井作业的特点，提出引用多Agent协同工作机制建立分布环境下的钻井事故诊断系统。研究了系统中多Agent协同工作的组织结构、通信机制，并对Agent的内部结构进行了详细描述。     

应用解析法分析中性点接地系统中的工频铁磁谐振-谐振判据和消谐措施

该文应用解析法讨论了工频铁磁谐振发生的原因和消谐措施。谐振原因是由于非线性电感的工频励磁特性与谐振电路戴维南电源伏安特性有交点，即是由于回路电阻大于临界阻尼电阻。文中给出了临界阻尼电阻公式和消谐措施。对于已经发生谐振的变电站，建议在电压互感器的二次侧并联电阻，使回路的等效电阻小于临界阻尼电阻。应用该方法成功地分析和消除了一110kV变电站的铁磁谐振。     

应用解析法分析中性点接地系统中的工频铁磁谐振-非线性电感工频励磁特性的求取

分析工频铁磁谐振时，选择正确的非线性电感励磁特性类型至关重要。通常使用常规励磁特性，由于电压或电流含有高次谐波分量，结论不可靠。该文介绍两种方法来滤除常规励磁特性中高次谐波而求解工频励磁特性。方法—用EMTP进行模拟，得出工频励磁特性上的一些离散点；方法二利用级数法，推导出工频励磁特性的解析表达式。在工频励磁特性的饱和区域(谐振发生区)两种方法所得结果相吻合。     

结合Active X设计变电站计算机多媒体仿真培训系统

介绍了采用ActiveX技术并结合 3Dmax等软件设计新型的变电站计算机多媒体仿真培训系统 ,此系统设计新颖 ,仿真效果逼真 ,可以实现变电站运行人员的现场操作和事故处理的培训 ,也可以由技术员编制考试题目 ,对运行人员进行考核。     

输电线路外力破坏事故的防范对策

本文从全省输电线路外力破坏事故多发的实际情况出发,针对输电线路设备和事故的特点,提出采取管理对策和技术措施防范外力破坏事故的若干建议。     

特殊运行方式与保护装置的配合

本文主要讨论了如何根据现场实际接线及设备工况临时改变运行方式 ,并在非正常运行方式下如何变更保护动作时限以及自动装置的投入方式。     

柳钢4~#高炉生产中大钟坠落事故及其处理

柳钢4~#高炉大钟突然坠落炉内并熔化掉。因无备件,采取小钟单钟上料维持生产。安装大钟时采用了简易方法,开炉后很快达产,减少了事故的损失。本文介绍了这次事故及处理过程。