Technical transformation of 220kV GIS high-voltage circuit breaker control cabinets for Youjiang Hydropower Plant
The 220kV GIS high-voltage circuit breaker control cabinets of Youjiang Hydropower Plant are used to open and close the high voltage circuit breakers,disconnectors and ground switches,so as to meet the requirements of safe operation of power lines or safe maintenance during power outages.The current cabinets have been put into operation for nearly 20 years.Aging of system components and improper design of secondary circuits resulted in poor system stability and high fault frequency,which is unable to meet the new technical standards and anti-major accident measures requirements of the power grid,so technical transformation is required to improve the safety,flex-ibility,speed and accuracy of equipment for the safe and stable operation of station power grid.An introduction is made on the technical transformation method and process of high-voltage circuit breaker control cabinets.