| 1. | The investigation reveals that , the adoption of moa on segments of 35kv weiyu lines apt to lighting strike would improve the lightning withstand level to 2 - 4 times , and would heavily reduce the stripping outrage
研究表明仅在35kv魏玉线路易击段杆塔上加装线路型避雷器后可提高各种情况下的线路耐雷水平2至4倍，并可大大降低线路雷击跳闸率。 |
| 2. | After the observing of transmission line for a lightning storm season , we did n ' t find the lightning trip . the result indicates line - surge arrester can improve lightning - proof property evidently and reduce the lightning tripping outage
通过两个雷雨季节的观察，发现110kv双含线没有再发生雷击跳闸故障，表明了线路型避雷器能明显改善山区输电线路的防雷性能，降低输电线路的雷击跳闸率。 |
| 3. | After the observing of transmission line for a lightning storm season , we did n ' t find the lightning trip . the result indicates line - surge arrester can improve lightning - proof property evidently and reduce the lightning tripping outage
通过两个雷雨季节的观察，发现110kv康平线与220kv大安线没有再发生雷击跳闸故障，表明了线路型避雷器能明显改善山区输电线路的防雷性能，降低输电线路的雷击跳闸率。 |
| 4. | After the observing of transmission line for a lightning storm season , we did n ' t find the lightning trip . the result indicates line - surge arrester can improve lightning - proof property evidently and reduce the lightning tripping outage
通过两个雷雨季节的观察，发现110kv双含线与110kv双海线没有再发生雷击跳闸故障，表明了线路型避雷器能明显改善山区输电线路的防雷性能，降低输电线路的雷击跳闸率。 |
| 5. | This can fully consider the effect of the structure of transmission line and the selection of lighting parameter etc . by calculating and analyzing various of factor that affect the lightning tripping probability of 500kv double circuit transmission line , we can draw the conclusions : the result by intersecting method is more accord with the practicality circumstance than by existing standard methods , using unbalance high insulation and reverse sequence of wire can reduce the contemporary outage rate of double circuit line , reducing the footing resistance is one of the most efficiency method to reduce the back stroking rate of double circuit transmission line , the double back stroking rate and the single back stroking rate will fall by three ground wire , when the footing resistance is 10 ohm , the back stroking rate by three ground wire is 83 percent of by two ground wire
在分析输电线路绕击耐雷性能时，对线路的雷电屏蔽问题进行了分析，提出对击距法进行改进，充分考虑了风速的影响因素，编写了具有工程实用价值的计算线路绕击耐雷水平的程序，此方法可以充分考虑线路结构和雷电参数等对绕击率的影响。通过对影响500kv同杆双回线路雷击跳闸率的各种因素进行了计算和分析，得到以下结论：采用相交法的计算结果比定义法更符合实际运行情况。采用不平衡高绝缘方式和导线逆相序排列可以大大降低双回同时跳闸率。 |
| 6. | Various factors that influence lightning strike switching rate are also analyzed . it has been showed that for some given configuration , all lightning over - voltages on substation equipments do not exceed the 1ightning strike insulation level in the case of invading waves out of lightning strike aerial input protection line
同时利用规程法、行波法、击距法对输电线路中不同杆塔型号的耐雷性能分别进行了研究和比较，对影响输电线路雷击跳闸率的各种因素进行了分析。 |
| 7. | Measuring of lightning parameters is the base work of lightning research . it is very important for researching the lightning characteristics , analyzing the accident of lightning , identifying the responsibility of lightning strike outage accident and discussing the strategies of lightning protection . it also can provide precise original data of atmosphere over - voltage for designing insulation co - ordination
雷电流参数的测量是进行雷电研究的基础工作，对于研究雷电特性、分析雷害事故、鉴定雷击跳闸事故责任、探讨防雷对策及为绝缘配合设计提供精确的大气过电压原始数据均具有十分重要的意义。 |
| 8. | With the demonstration of 35kv line of youxian substation , it built a numeral value calculation model of on - line data of each pole . in terms of many factors , it studied on how to improve lightning withstand level , especially on how to use moa economically and reasonably , and on the synthetic measures to decrease the lightning tripping outrage
在考虑众多影响因素的基础上，对雷击35kv线路时雷电过电压进行数值计算，通过大量的数值模拟计算，研究如何提高其耐雷水平，特别是研究线路型避雷器经济合理的使用，以及降低雷击跳闸率的综合处理方法。 |
| 9. | It is found that , for the specialty of our 35kv lines , we should adopt synthetic lightning protection measures of power lines as the traditional measure could hardly keep up with the lightning protection requirement for its low line lightning protection level , high stripping outrage and bad maintenance
通过研究发现，目前由于绵阳局35kv线路的特殊性， 35kv线路普遍存在采用传统的防雷措施线路耐雷水平不高、雷击跳闸率偏高、运行维护也较为困难等问题，难以满足生产上的防雷要求，需对现行线路进行防雷综合措施的处理。 |
