本文關(guān)鍵詞：高速鐵路牽引網(wǎng)雷害風(fēng)險(xiǎn)評估方法，由筆耕文化傳播整理發(fā)布。

高速鐵路牽引網(wǎng)雷害風(fēng)險(xiǎn)評估方法

Method of Lightning Hazard Risk Evaluation for Traction Electric Network of High-speed Railway

[1] [2] [3] [4] [5] [6]

GU Shanqiang, FENG Wanxing, ZHAO Chun, LU Zejun, WANG Tao, ZHOU Ziqiang （Wuhan NARI Limited Liability Company, State Grid Electric Power Research Institute, Wuhan 430074, Chin

國網(wǎng)電力科學(xué)研究院武漢南瑞有限責(zé)任公司,武漢430074

文章摘要：雷電災(zāi)害己成為威脅高速鐵路運(yùn)行安全的重要因素，建立科學(xué)、系統(tǒng)、規(guī)范的高鐵牽引網(wǎng)雷電風(fēng)險(xiǎn)評估系統(tǒng)，合理有效地指導(dǎo)高鐵牽引網(wǎng)的防雷設(shè)計(jì)、運(yùn)行和改造，具有十分重要的必要性和緊迫性。為此基于風(fēng)險(xiǎn)管理的概念提出了高速鐵路牽引網(wǎng)雷電風(fēng)險(xiǎn)評估方法，討論了牽引網(wǎng)雷擊損害風(fēng)險(xiǎn)源獲取方法、牽引網(wǎng)雷擊損害類型，提出了不同落點(diǎn)、不同雷電流雷擊損害概率的計(jì)算方法和流程。提出采用雷擊跳閘率作為表征雷害風(fēng)險(xiǎn)的指標(biāo)，，其數(shù)值等于風(fēng)險(xiǎn)源數(shù)量與雷擊損害概率的乘積。通過設(shè)定風(fēng)險(xiǎn)評估等級劃分標(biāo)準(zhǔn)，實(shí)現(xiàn)了雷害風(fēng)險(xiǎn)等級評估，并建立了全參數(shù)、全路段雷害風(fēng)險(xiǎn)量化評估流程。京滬高鐵評估結(jié)果表明：2005-2013年沿線風(fēng)險(xiǎn)源特征具有明顯差異性，各段地閃密度最大值約為最小值的6倍，從北往南雷電流幅值累積概率50％電流值從36．5kA逐漸減小為22．1kA；2005-2013年京滬高鐵全線126網(wǎng)格段中A、B、C、D風(fēng)險(xiǎn)等級的網(wǎng)格段數(shù)量分別為24、38、45、19，20％網(wǎng)格段處在低雷害風(fēng)險(xiǎn)，15％網(wǎng)格段處在強(qiáng)雷害風(fēng)險(xiǎn)。所提出的方法可有效確定牽引網(wǎng)雷害風(fēng)險(xiǎn)水平和風(fēng)險(xiǎn)等級分布，發(fā)現(xiàn)雷害風(fēng)險(xiǎn)嚴(yán)重區(qū)段，為高速鐵路牽引網(wǎng)防雷優(yōu)化設(shè)計(jì)和運(yùn)維檢修管理提供更加科學(xué)準(zhǔn)確的參考依據(jù)。

Abstr：Lightning hazard has become an important threatening factor for the safe operation of high-speed railway. So it is of great importance and urgency to build a scientific and normative system of lightning hazard risk evaluation. Thus, it is necessary to provide an applicable guide for the designing, operating, and reconstruction of lightning performance for traction electric network of high-speed railway. For this purpose, we proposed a method of lightning hazard risk evalua- tion for traction electric network of high-speed railway based on the concept of risk management. We discussed the sources of lightning damage and the types of lightning damage for the traction electric network. Moreover, we proposed a method and flow chart to calculate the lightning damage probability for different lighting location and current, and gave the lightning hazard risk indicators which were equal to the product of the risk sources＇ number and the lightning damage probability, deriving their calculating formulas. Lastly, by setting up the partitioning criterion of risk grade, we realized the lightning hazard risk grade evaluation, and developed a quantified evaluation flow chart with many parameters and the whole railway corridor of lightning hazard risk for traction electric network. As an example, lightning hazard risk of the Beijing-Shanghai High-speed Railway was evaluated and discussed. The results show that the lightning damage sources of the different segments have obvious differences and the maximal ground flash density is 6 times of the minimum one. From the north to the south, the lightning current amplitude of the 50% lightning cumulative probability decreased from 36.5 kA to 22.1 kA. The numbers of risk grade A, B

文章關(guān)鍵詞：

Keyword：:high-speed railway traction electric network lightning hazard risk evaluation source of damage type of damage probability of damage risk indicator

課題項(xiàng)目：國家自然科學(xué)基金項(xiàng)目（U1134106）.

  本文關(guān)鍵詞：高速鐵路牽引網(wǎng)雷害風(fēng)險(xiǎn)評估方法，由筆耕文化傳播整理發(fā)布。