Patent ID: 9222175
Filing Date: 2015-12-29
Classification: C23F,H01R

Abstract:
1. A method for protecting a plurality of steel electrical poles located near an electrical substation, said electrical substation being electrically grounded to a grounding grid, each of said plurality of metal electrical poles connected to said grounding grid via a common wire, said method comprising: providing one or more impressed current anodes located at a pre-determined distance from said grounding grid; wherein the impressed current anodes are place at least on the North, South, East and West sides of the grounding grid; further wherein the impressed current anodes are placed at approximately the midpoint of each side of the grid and at an approximate distance of L/3.5 from the sides of the grounding grid where L is the length of a given side of the grid; and supplying a direct current power from a direct current power source comprising a positive terminal and a negative terminal, said positive terminal of said direct current power source being electrically connected to said one or more impressed current anodes, said negative terminal of said direct current power source being electrically connected to said grounding grid, wherein said direct current power source is configured to apply a direct current that reduces an electrical potential of said grounding grid, wherein the amount of the applied direct current depends on number of impressed current anodes.