Apparatus and method for measuring leakage currents on porcelain and glass insulator disc strings

摘要

An apparatus and method for accurately detecting and monitoring leakage currents on porcelain and glass insulator disc strings is disclosed. The sensor apparatus includes a sensor unit configured to attach to a cap of an insulator disc string. The sensor unit includes a sensor disc configured to surround the cap and a housing connected to the sensor disc. The sensor disc includes a conducting lower disc set, a conducting upper disc set, an insulating disc set sandwiched between the upper and lower conducting disc sets, and a conducting mesh connected to a bottom of the lower disc set. The housing including electronics configured to measure and communicate leakage currents on an insulator disc. Leakage currents on a surface of the insulator disc are intercepted by the sensor disc and transferred to the housing for processing and communication by the electronics.

主权项

1. A sensor apparatus for detecting and monitoring leakage currents on insulator disc strings of an electrical power system, the apparatus comprising:
(a) a sensor unit configured to attach to a cap of an insulator disc string, the sensor unit includes:
(i) a sensor disc configured to surround the cap, the sensor disc includes a conducting lower disc set, a conducting upper disc set, an insulating disc set sandwiched between the upper and lower conducting disc sets, and a conducting mesh connected to a bottom of the lower disc set to provide uniform contact with a surface of the insulator disc; and(ii) a housing connected to the sensor disc, the housing including electronics configured to measure and communicate leakage currents on an insulator disc; and (b) wherein leakage currents on the surface of the insulator disc are intercepted by the mesh of the sensor disc and transferred to the housing for processing and communication by the electronics.