摘要
雷击事故是造成直流输电线路发生故障的重要原因。随着电压等级的提高,雷击事故对超、特高压的影响也越来越严重,超、特高压输电线路的防雷已成为电网安全的重要课题。笔者针对直流输电线路的特性,从雷电反击特性方面对直流输电线路的防雷保护特性进行了研究。用ATP-EMTP建立±500 kV直流输电线路仿真模型进行雷击仿真试验,针对杆塔接地电阻、杆塔高度和绝缘水平三个因素进行反击特性研究。
The lightning stroke accident is the important causes of the fault in DC transmission line. With the increase of voltage level of transmission line, the influence of the lightning accident to EHVDC and UHVDC transmission lines is more and more serious, the lightning protection of the EHVDC and UHVDC transmission line has become an important topic of grid security. According to the characteristics of DC transmission line, the Lightning Protection Performance of DC transmission line is analyzed from the aspect of lightning back-striking characteristics. The lightning simulation test is carried out on the ±500kV DC transmission line mode which is established by the ATP-EMTP simulation, the back striking characteristics is researched based on the three factors of tower grounding resistance, tower height and insulation level.
出处
《电瓷避雷器》
CAS
北大核心
2014年第3期102-106,共5页
Insulators and Surge Arresters
