±500 kV直流工程接地极为应对多种运行方式下的优化设计

Research on Optimal Design for Multiple Operation Modes of the Wu Tun Electrode of ±500 kV Yongren-Funing HVDC Transmission Project

本文分析了某直流输电工程的多种系统运行方式,以及在多种运行方式的基础上,得出两极分送时的年不平衡电流及持续时间和工程寿命期内的不平衡电流及持续时间。同时,为了改善极环端头的电流分布,使其尽量均匀,对武屯接地极极环端部圆形进行优化。

This paper analyzes a variety of system operation mode to Yongren-Funing HVDC transmission project, And on the basis of a variety of operating methods, we can know- the unbalanced current of the year and duration when the poles be distributed, and throughout their life cycles. In order to improve the current distribution of the electrode end and make it as uniform as possible. The Wu Tun earth electrode ring end by a circular optimization for end ring.