With the rapid development of electric power enterprise , the demand on the reliability of electric power system is further more , and the development of insulation monitoring technique has been paid more attention . oil - filled equipment plays a very important role in power system , and the dielectric loss factor ( tg ) is an important parameter to reflect the insulation condition . therefore , studying the tg of insulating oil is of important practical meaning 随着电力事业的迅速发展,对电力系统运行可靠性要求将越来越高,电气设备绝缘检测技术的发展更加受到重视。充油设备在电力系统中占有相当大的比例,而绝缘油介质损耗因数是反映其绝缘状况的重要参数。因此,研究绝缘油介质损耗因数的测量方法具有十分重要的实际意义。
The paper analyses the control principle of general several intelligent lighting control methods , analyses their advantages 、 disadvantages , applications , and the proceedings should be paid attention to in the applications ; analyzes the characters and applicable scope of common several interior illumination calculation methods ( the point method 、 the coefficient of utilization method 、 the unit capacity method ) , designs a lighting system for a living room ; and brings forward to the system function of easy home lighting intelligent control system , studies design ways of its software and hardware . the system uses at89c51 micro - controller , programs with assemble language , uses effective anti - jamming measures to ensure it operates reliably 论文分析了现有常用的几种智能照明控制方式的控制原理，优、缺点，使用场合，以及在使用中应注意的事项；分析了常用室内照度计算的几种方法(逐点法、利用系数法、单位容量法)的特点和适用范围，设计了某一起居室的照明系统；并提出小康住宅智能照明控制系统的系统功能，研究了该系统的软、硬件设计方法，采用at89c51微处理器作为控制器，用汇编语言编程，并采取有效的抗干扰措施以确保其运行可靠性。
Firstly , this paper discusses the difference between the testing profile and the operating profile , obtains the testing ratio of coverage in the testing phase and the testing ratio of coverage in the operating phase according to practically measured data , thereby describing the difference between the testing profile and the operating profile quantitatively with the testing ratio of coverage 本文首先根据测试可靠性和运行可靠性的概念,重点讨论了软件测试剖面和运行剖面的差别,应用实测数据验证得到软件测试阶段测试覆盖率与运行阶段测试覆盖率,从而以测试覆盖率量化说明了测试剖面与运行剖面的差别。
The operation reliability of the power transformer as the key equipment in electrical power systems , influences operation security of electrical power systems directly . the components and contents of gases dissolved in transformer oil can be used to reflects internal insulation faults of operating transformer . in order to overcome the errors caused by complex handling procedure and man - made factors using general chromatogram analysis method , author brings forward an on - line detecting of gases dissolved in transformer oil by using macromolecule polymer to separate oil and gases automatically and an information fusion technology of multi - sensors ; at the same time , in order to improve the accuracy and reliability , author uses neural networks to diagnose transformer faults 变压器作为电力系统的枢纽设备，其运行可靠性直接影响电力系统的安全运行；变压器油中溶解气体的成分和含量能有效体现运行变压器内部的绝缘故障情况，为解决常规色谱分析中复杂的操作程序和由于人为因素引起的较大的误差，论文提出了应用高分子聚合膜实现变压器油气自动分离、多传感信息融合技术智能检测多种气体成分的变压器油中溶解气体在线监测技术，应用神经网络智能诊断方法实施故障诊断，提高变压器故障诊断的准确性和可靠性。
In power system operation , applications of reliability theory is began , which is helpful by simulation in factual operation . operation reliability is very important , but it is immature . operation reliability is discussed , to find the condition and method for the evaluation 指出运行可靠性评估对电力系统运行的重大意义，但在可靠性研究中还未相当成熟，文中对运行可靠性进行初步的探讨，从实际电网运行的状况中，寻找运行可靠性评估的条件与方法，提出自身的一些见解。
( 3 ) the transformation for turbo cycling compressor is designed in both differential pressure seal parts at the inlet and outlet and the connecting construction of the positioning key and turbo cycling compressor casing : replace wave pipe of differential pressure seal parts with asbestos jointing and improve its reliability ; jointing connection of the positioning key and turbo cycling compressor casing has been converted into screw thread connection and avoid the dangers from jointing crack ( 3 )从进出口压差密封部件和定位键与外壳间联接结构两方面入手，提出了相应的改造方案：将机组进出口压差的密封部件由波纹管改为石棉填料函，提高了其运行可靠性；将内件周向定位键与外壳间的联接结构由焊接改为螺纹联接，避免了焊接裂纹引起的安全事故。
