1) pollution test
污秽试验
1.
In this paper,a leakage current monitoring system suitable for pollution test is developed.
研制了一套适合污秽实验的泄漏电流测量系统,详细介绍了其传感器的设计原理以及过电压和过电流的保护设计,给出了软件部分的主要功能,并通过人工污秽试验,对系统进行了验证。
2.
This paper gave the relations between flashover voltage of pollution insulators and atmospheric pressure and the characteristic index n under DC voltage, introduced the former artificial pollution test at low altitude and the artificial pollution test results of DC post insulators at different atmospheric pressure that were finished recently.
文章给出了污秽绝缘子污闪电压和大气压的关系及直流电压下的特性指数n,介绍了原有低海拔人工污秽试验和新近在不同气压下完成的直流支柱绝缘子人工污秽试验结果,提出了对高海拔换流站直流场户外设备外绝缘进行海拔修正的意见。
3.
Based on the test results with two kinds of pollution test methods fo r composite insulators, this paper shows some problems in carrying out pollution flashover test and discusses how these problems will influence the test results and how to solve the problems.
通过对比复合绝缘子的两种污秽试验结果,提出了复合绝缘子污秽试验中所存在的一些问题,说明了这些问题对试验结果的影响情况,给出了解决这些问题的一些方法,并探讨了复合绝缘子憎水性恢复对污闪电压的影响。
2) artificial contamination test
污秽试验
1.
The characteristics of leakage current(LC) were studied based on artificial contamination test,which obtained the relationship between leakage current and the influenced factors.
分析了表征污秽绝缘子运行状态的特征量,比较了各特征量的特点及其适用场所,总结了影响泄漏电流的特征量,在人工污秽试验的基础上,讨论了泄漏电流在闪络过程中的特征,得出了泄漏电流与其基本特征量之间的关系,通过希尔伯特变换的方法提取了泄漏电流包络线,分析了电弧延伸在污闪发展过程中对泄漏电流的影响。
2.
In this paper, statistics characteristics of leakage current were studied basing on a large number of data obtained from artificial contamination test, the factors influencing leakage current significantly were found and a regression equation was established.
基于恒压净雾人工污秽试验数据,利用统计分析理论,分析了泄漏电流Ileak的特性,讨论了在人工污秽试验过程中,显著影响Ileak的因素,计算了各因素影响因子的大小,得到了电流的回归方程。
3) artificial contamination test
人工污秽试验
1.
In order to research he flashover characteristics of the insulators for 800 kV UHVDC transmission line, the artificial contamination tests were carried out for different types of insulators under different pressures and in different typical kinds of equivalent salt deposit density(ESDD), and the test results were analyzed.
为了研究高海拔条件下±800kV直流输电线路用绝缘子的污闪特性,对不同类型的大吨位大盘径瓷和玻璃绝缘子,在不同污秽、不同气压条件下进行了系列的人工污秽试验,并对试验结果进行了分析。
2.
The results show that ESDD and NSDD have independent influence on the flashover voltage in artificial contamination test;the relationship between flashover voltage and ESDD,NSDD could be expressed as power function with a negative index.
针对电力系统绝缘子污秽闪络产生的危害问题,采用升压法对涂污秽物的单片瓷绝缘子(XP-210)进行人工污秽试验,分析了不同盐密(NaCl)、灰密(硅藻土)对单片瓷绝缘子闪络电压的影响。
4) artificial pollution test
人工污秽试验
1.
However,the effect is neglected in the artificial pollution tests.
绝缘子表面不溶物质的类型和量对其污闪电压有影响,然而在以往人工污秽试验中常忽略这种影响。
2.
By means of artificial pollution test the contamination flashover characteristic of composite insulators lost hydrophobicity under DC voltage is researched.
通过人工污秽试验研究了丧失憎水性的复合绝缘子在直流电压下的污秽闪络特性,给出了两种憎水性状态下的复合绝缘子污闪电压,在憎水性完全丧失状态下时不同表面污秽度下的复合绝缘子50%闪络电压,文中还分析了表面污秽不均匀分布对污闪电压的影响。
5) pollution
[英][pə'lu:ʃn] [美][pə'luʃən]
污秽
1.
Research and application of detecting pollution based on microwave spectrum s performance;
微波波谱特性在污秽检测中的应用研究
2.
The Measurement of Pollution Equivalent Salt Density and Factors Affecting Its Accuracy;
污秽等值盐密的测量及影响其准确度的因素
3.
On the basis of data and anti-pollution technology knowledge,lots of technology research results,such as the correction of SPS,the correction of NSDD and so on should be considered in 800kV UHVDC transmission line external insulation design and arrangement.
针对污秽外绝缘设计是±800kV直流工程关键技术问题之一,提出了对±800kV直流输电线路绝缘子串进行污秽外绝缘设计考虑现场污秽度校正、NSDD校正及采用污耐压方法进行污秽外绝缘设计的方法;根据瓷、玻璃绝缘子的污耐压曲线对±800kV直流输电线路"I"型绝缘子串进行了污秽外绝缘设计。
6) contamination
[英][kən,tæmi'neiʃən] [美][kən,tæmə'neʃən]
污秽
1.
Antenna temperature model of insulators contamination detected by radiometer;
辐射计检测绝缘子污秽的天线温度模型
2.
An on-line remote-monitoring system of insulator contamination based on GSM SMS;
基于GSM SMS的绝缘子污秽在线遥测系统
3.
An online monitoring system of insulator contamination;
绝缘子污秽在线监测技术与系统构成
补充资料：污秽表面放电
| 污秽表面放电 pollution surface discharge 介质表面沾染污秽时所引起的沿面放电。简称污闪。固体介质表面沾染污秽又同时变潮后，污秽层中所含的可溶性盐类和酸、碱等溶于水膜，形成离子电导，使污秽表面通过较大泄漏电流；沿面闪络电压显著降低，严重时能降低到清洁表面闪络电压的10％以下。雾、露、细雨和溶雪天气时，绝缘子甚至会在工作电压下闪络，严重影响电力系统的安全运行。因此，污闪已成为高压和超高压电工设备选择外绝缘水平的主要依据。防止污闪和提高污闪电压的措施有：①定期清扫和用水冲洗绝缘子和绝缘套管。②改进绝缘子结构使刮风、下雨时能自行清扫。③增大泄漏距离，选取合理的泄漏比矩(每千伏工作线电压需要的泄漏距离)。④给绝缘表面上半导体釉或涂硅油等憎水材料。⑤尽量使高压输电线路避开污秽区，避免在污秽区建高压变电所。
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说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条