典型架空输电线路地线电磁取能等效电路的分析

发布时间：2018-04-09 03:14

本文选题：输电线路　切入点：地线取能　出处：《电网技术》2015年07期

【摘要】：地线取能是输电线路在线监测装置较为理想的供电方式,其关键技术问题之一是如何获得足够的功率。取能功率的最大化必须以其等效电路为基础进行阻抗匹配设计。同时,取能电路输出电压的稳定性、可靠性也必须以其等效电路参数为基础。为此,以四川电力公司所辖的某220k V架空输电线路为例,对地线取能等效电路进行推导,并对其参数进行简化,在此基础上对地线最大取能功率进行计算与评估。此外,结合EMTP-ATP仿真对相关因素对等效电路的影响进行分析,供取能设计参考。最后,根据现场测量结果验证等效电路参数的理论计算结果。
[Abstract]:Ground line energy acquisition is an ideal power supply method for on-line monitoring device of transmission line. One of the key technical problems is how to get enough power.The maximum power must be based on the equivalent circuit for impedance matching design.At the same time, the stability and reliability of output voltage must be based on the equivalent circuit parameters.Therefore, taking a 220 kV overhead transmission line under the jurisdiction of Sichuan Electric Power Company as an example, the equivalent circuit for ground line energy acquisition is deduced, and its parameters are simplified. On this basis, the maximum energy acquisition power of ground wire is calculated and evaluated.In addition, the influence of related factors on the equivalent circuit is analyzed by EMTP-ATP simulation, which can be used as a reference for energy design.Finally, the theoretical calculation results of equivalent circuit parameters are verified according to the field measurement results.
【作者单位】：输配电装备及系统安全与新技术国家重点实验室(重庆大学);四川省电力科学研究院;
【基金】：国家创新研究群体基金项目(51321063)~~
【分类号】：TM75

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