1) shielding failure
绕击
1.
According to the operation data abroad,the tripped-out accidents caused by shielding failure amount to a large percentage of the tripped-out accidents caused by lightning strike on the UHV AC transmission lines.
为评估、计算输电线路雷电屏蔽性能即绕击性能,基于长空气间隙放电理论建立了特高压直流输电线路雷电屏蔽的先导发展模型,并用该模型计算了拟建立的云广±800 kV直流特高压输电线路雷电屏蔽性能。
2.
The performance of shielding failure of 500 kV quadruple-circuit overhead AC transmission lines on the same tower with the revised electric geometry model (EGM) method is analyzed, and the problem of shielding for transmission lines by ground wires is discussed.
为研究同塔4回输电线路绕击耐雷性能,采用改进电气几何模型对其进行了分析。
3.
With the increase of voltage level of transmission line,the proportion of outages because of shielding failure increases,therefore,exactly evaluating lightning-withstanding level of transmission line is especially important for system service and stable operation.
随着电压等级的升高,由雷电绕击而引起的线路跳闸事故所占比例越来越大。
2) Lateral strike (shielding failure)
侧击(或绕击)
3) shielding failure flash-over
绕击跳闸
1.
Electro-geometric (EGM) model is now the most popular method for the shielding failure flash-over rate(SFFOR) calculation.
绕击是超高压、特高压输电线路雷击跳闸的主要原因,山区绕击跳闸率计算相对平原更为复杂。
4) lightning shielding failure
绕击屏蔽
1.
Along with the increase in working voltage, the lightning shielding failure model which is based on one side of shield wire, transmission line and lightning downward leader will be unable to describe the real circumstance of UHVDC transmission lines.
因此,以模拟电荷法为基础,将雷电先导、两侧地线、极线作为整体研究对象,考虑极线工作电压及极线分裂数,计算雷先导垂直下行过程中各导线表面场强变化,并运用Peek判据确定各导线对应的雷先导一级定位高度,合理解释特高压直流线路中存在的正极线绕击概率大的问题,提出了新的绕击屏蔽观点:特高压直流架空线路中仅负极线侧避雷线和正极线产生上行先导竞争拦截雷下行先导,正极线侧的避雷线屏蔽功能被削弱,未起到完全保护正极线的作用。
5) surround thunder-struck range
绕击范围
1.
Based on the thunder-struck distance and lightning drawing angle phase the author analyzed the surround thunder-struck of 110~500 kV transmission lines and put forward the method to determine the lightning drawing range of the ground wire,protective range and surround thunder-struck range for 110~500 kV transmission lines.
文章以避雷线、导线的雷电击距及引雷角相等,分析了110～500 kV输电线路绕击雷害,并提出了确定110～500kV输电线路避雷线的引雷范围、保护范围、绕击范围的方法。
6) Shielding failure rate
绕击率
1.
With such model the effect of tower structure,lightning current amplitude,angle of the lightning incidence,as well as the ground angle on the shielding failure rate are analyzed.
应用改进的电气几何模型分析了输电线路杆塔结构、避雷线和导线的布置、雷电流的幅值、地面倾角对绕击率的影响。
2.
Shielding failure rate is an important parameter to calculate lightning withstands level.
绕击率是计算输电线路耐雷水平的重要参数,传统计算方法以导地线平均高度估算线路的绕击率,存在一定的误差,难以反映线路绕击的真实情况。
补充资料：2,9-二甲基-4,7-二苯基-1,10-菲绕啉
CAS：4733-39-5
分子式：C26H20N2
中文名称：2,9-二甲基-4,7-二苯基-1,10-菲绕啉；浴铜灵；2,9-二甲基-4,7-二苯基-1,10-菲啰啉
英文名称：10-Phenanthroline, 2,9-dimethyl-4,7-diphenyl-1；2,9-dimethyl-4,7-diphenyl-10-phenanthroline；bathocuproine；2,9-Dimethyl-4,7-diphenyl-1,10；1,10-Phenanthroline,2,9-dimethyl-4,7-diphenyl-
分子式：C26H20N2
中文名称：2,9-二甲基-4,7-二苯基-1,10-菲绕啉；浴铜灵；2,9-二甲基-4,7-二苯基-1,10-菲啰啉
英文名称：10-Phenanthroline, 2,9-dimethyl-4,7-diphenyl-1；2,9-dimethyl-4,7-diphenyl-10-phenanthroline；bathocuproine；2,9-Dimethyl-4,7-diphenyl-1,10；1,10-Phenanthroline,2,9-dimethyl-4,7-diphenyl-
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