1)lightning-caused breaking雷击断线
1.Application of arrester against lightning-caused breaking of insulated conductors on 10 kV overhead distribution lines;采用避雷器防止10kV架空绝缘导线雷击断线
2.Theories and some main protection methods of lightning-caused breaking of insulation-covered conductors in 10 kV overhead distribution networks were introduced.介绍了10 kV架空绝缘导线雷击断线机理及现有的一些主要防治方法,提出了一种新型10 kV架空绝缘导线防雷击断线装置——防雷金具的主要设计思想、结构和技术要求。
3.Firstly,the theories and some main protection methods of lightning-caused breaking of covered conductors in 10kV distribution networks are introduced.首先介绍了10 kV架空绝缘导线雷击断线机理及现有的一些主要防治方法。
英文短句/例句
1.Protections Measures of Reducing the Lightning Trip-out Rate and Lightning-caused Breakage for Distribution Lines降低配电线路雷击断线和跳闸率的防护措施
2.Analysis of Wire Breakage Accident by Lightning Stroke of Mine Line of Zhengzhou Mining Group and Its Countermeasures郑州煤业集团矿山线雷击断线事故的分析与对策
3.Analysis of Insulation Breakdown of Two Sides Breaker in 220 kV Transmission Line Caused by Multiple Lightning Strikes220kV线路多重雷击导致两侧开关断口绝缘击穿分析
4.On the Causes of Overhead Line Lightning and Lightning Protection Measures浅谈架空线路遭雷击原因及防雷措施
5.The Differentiation of Lightning Shielding Failure and Back Flashover on High-Voltage Transmission Line;高压输电线路雷电绕击、反击的识别
6.Maintenance method for earth wire of 500 kV power transmission line after heavy damage by lightning stroke500kV线路架空避雷线雷击损伤后抢修维护方法
7.Analysis of Circuit Breaker Failures Due to Lightning Strike in a 220 kV Substation一起220 kV变电站断路器雷击故障分析
8.Two Lightning Faults of Breakers二起断路器遭受雷击损坏的事故分析
9.Analysis of OPGW disconnection caused by lighting and discussion of countermeasuresOPGW光缆雷击断股原因分析和防范措施
10.Analysis of lightning failure of 608 CB in 220kV substation某220kV变电站608断路器雷击故障分析
11.Analysis and prevention of Lightning Trip-out of Transmission Lines输电线路雷击跳闸原因分析及防雷措施
12.Identification of Shielding Failure and Back Striking in UHVDC Transmission Lines±800kV直流输电线路雷电绕击与反击的识别方法
13.Optimization of Fire Position for Wire-Guiding+Wake Homing Torpedo线导+尾流自导鱼雷射击阵位优化研究
14.Research on the Lightning Protection Performance of Back Striking for 500kV Multiple-circuit Transmission Line;500kV同杆多回线路雷电反击性能的研究
15.Analysis of Lightning Stroke Fault on 500kV Transmission Line500kV输电线路雷击跳闸故障分析
16.Faults Analysis and Prevention of Lightning Stroke on 500kV Transmission Lines in Hubei Power Grid湖北500kV输电线路雷击故障分析及防治
17.Three-Dimensional Calculation Method on Shielding Failure Rate of Transmission Lines输电线路雷电绕击率的三维计算方法
18.Analysis and Preventive of Lightning Fault on Suizhou 220 kV Yonghong Line220kV永红线雷击故障分析及防范对策
相关短句/例句
mechanism of lightning-caused breaking雷击断线机理
3)OPGW雷击断股
1.Recently,broken strands of OPGW occurred after lightning stroke on some high voltage power lines.近来高压线路发生一些光纤复合架空地线雷击断股现象,为此进行了全国25个省和五大城市OPGW运行状态的初步调查。
4)strands break雷击断股
1.Some accidents of OPGW strands break because of lightning are given and suggestions for choosing outer materials of OPGW are put forward at the end of the paper.本文简要介绍了OPGW常见型式,阐述了OPGW选型和施工设计所包含的内容,特别对短路故障时地线上短路电流分布的计算公式以及地线热稳定计算方法及比较进行了详细的说明;文章最后摘要性介绍了OPGW雷击断股情况,对OPGW外层铠装金属材料的选取给出建议。
2.Accidents of OPGW strands break appear more and more because of lightning and some typical case are given in this article.列举了一些典型的光纤复合地线(OPGW)遭受雷击断股的案例,分析了下行雷先导放电过程,提出更改OPGW接地方式以降低OPGW遭受雷击概率的思路,并建议按0。
5)lightning stroke雷击断股
1.In recent years, the incidents of broken strand of OPGW cable by lightning stroke at home are occurred for many times, some solving schemas are emphasized from system design aspect to solve this problem.近年来,国内的光纤复合架空地线光缆OPGW光缆出现了多次雷击断股的事件,一些解决方案强调从系统设计方面来着手解决这一问题。
6)strike on the circuit-breaker断路器雷击
延伸阅读
电力系统断线谐振过电压电力系统断线谐振过电压resonance overvoltage due to broken lines in electric power system d一onl一xjtong duonx旧nx一ezhen guod一onyo电力系统断线谐振过电压(resonanceovervoltage due to broken lines in eleetrie Powersystem)电力系统中由于导线断落而激发起来的铁磁谐振过电压。图中所示为中性点不接地系统中单相断线和一侧导线落地所形成的典型谐振回路，其中云.、云b和云。为电源变压器的对称电动势，LK为空载变压器的励磁电感，C。和C12为导线的对地和相间电容。按照载维南定理，可将此图等效变换为最简单的申联电路，图中:一1·5:·，:一:。鲁，e一e。+Ze:2。两相断线时亦可变换为类似的等效电路。由于L为铁芯电感，故在不同C值(即不同导线长度)下可能发生高颇、工频和分频铁磁谐振，并在断线处和负载变压器端部产生铁磁谐振过电压。在工频谐振时，主回路呈现容性，亡。与电源电动势反相，负荷变压器三相电压的相序会与断线前相反，称为相序翻转。此时负载变压器二次侧如接有小容盘的电动机，将会发生反转。但当负载变压器二次侧的有功负荷较大时，其等效电阻可以吸收足够的振荡能量而使谐振强度受到抑制。了毛竺工不了飞乙K厂喜几.爵酷一十斗二阿、{牲一兰坚卜 相断线接线图及其等效电阻 断线谐振亦可在消弧线圈补偿电力系统和110~22okV的中性点有效接地的电力系统中产生，后者是由于部分负载变压器的中性点不接地而形成断线谐振回路。 断线谐振过电压引起的绝缘损坏在配电网中较常发生，引起配电变压器绝缘闪络和避雷器损坏等.实验表明，断线后的工频谐振往往具有自激性质，为此可在空载变压器的高压或低压侧投人一定大小的相间电容，以使自激谐振转化为他激性质，然后投人瞬间吸能装置加以抑制。最好的防止措施是加强线路维护，避免发生断线。此外，一旦发生断线，则尽快切除负载变压器，以缩短谐振的持续时间。
