3AT2/3AT3-EI series circuit breaker hydraulic mechanism defect analysis and improvement
The 500 kV Extrahigh voltage power grid is developing rapidly,and the use of hydraulic circuit breakers at the 500 kV voltage level is becoming more and more widespread.Occasionally,the hydraulic mechanism of some 3AT2/3AT3-EI switches may experience frequent pressure issues,posing a threat to the safe operation of the Extrahigh voltage power grid.Based on the actual production and operation situation of the ultra-high voltage substation of the power company,in response to the above problems,a new intelligent exhaust device is designed and the secondary circuit of the oil pump electrical control is improved to solve the problem of frequent pressure failure of the switch hydraulic mechanism.
NETL
NSTL
万方数据
