基于PSCAD的采油区配电线路防雷研究

Research on Lightning Protection of Distribution Lines in Oil Production Area based on PSCAD

为提升采油区10kV配电线路的耐雷水平,本文系统研究了10kV配电线路的防雷现状,探讨了各项防雷措施的优劣,利用PSCAD仿真软件对“上”字型杆塔和三角型杆塔分别建模,仿真分析绝缘子类型、避雷器安装、避雷线架设等防雷措施对线路耐雷水平的影响。然后,通过对某采油区配套的一条10kV配电线路开展实地测量与建模仿真,分析验证了多项防雷措施的可行性与有效性。最终采用对24支#3杆使用降阻剂、深埋接地极、在线路前20基杆塔架上设避雷线和在部分杆塔的三相绝缘子两端并联线路避雷器等措施进行优化。仿真结果显示,采取上述优化措施后,该线路整体耐雷水平显著提高。本文制定的防雷优化方案具有普适性,可以为其它采油区的10 kV配电线路防雷提供借鉴。

To improve the lightning resistance level of 10 kV distribution lines in the oil production area,this paper systematically studies the lightning protection status of 10 kV distribution lines,discusses the advantages and disadvantages of various lightning protection measures,uses PSCAD simulation software to model the inverted F-shaped pole tower and triangular pole tower respectively,simulates and analyzes the impact of lightning protection measures such as insulator type,lightning arrester installation,and lightning protection wire erection on the lightning resistance level of the line.Then,through the field measurement and modeling simulation of a 10 kV distribution line in an oil production area,the feasibility and effectiveness of a number of lightning protection measures are analyzed and verified.Finally,the measures such as applying resistance reducing agent to and deeply burying the grounding electrode for 24#3 poles,setting lightning protection wires on the first 20 poles and towers of the line,and connecting parallel line arresters at both ends of the three-phase insulators of some poles and towers are adopted.The simulation results show that the overall lightning resistance level of the line is significantly improved after taking the above optimization measures.The lightning protection optimization scheme formulated in this paper is universal,which can provide reference for lightning protection of 10 kV distribution lines in other oil production areas.