The results of simulation show that this method is an effective way to find the corrosion broken point of GG.It provides a new method for the examination of GG.

• 通过大量的模拟实验表明，此方法可以有效地发现变电站接地网出现的腐蚀、断裂情况并可准确地定位，为青藏铁路沿线变电站接地网的安全可靠运行提供保证。