A Brief Analysis of the Plan of Power Lines Quick Protection with Inductors
LI Guoxiang;LIN Xiaolei;TIAN Shoutao;China Petrochemical Corporation Limited Tianjin Branch;
The power line switches could not cut off the shortcut which is in front of the inductor of a 110 kV step-down station of a company. There was no instantaneous trip protection found.Instead,the over-current protection was used in the power system,which is time consuming and can not immediately cut off electrical faults. This is easy to cause interference electricity and did not satisfy the requirements of "Three lines of defenses "about quick protections in power systems. The problem was analyzed and a detailed solution was given.
【CateGory Index】： TM773