Oil filtration system for plural phase power equipment tanks

Abstract

Insulating oil in electric power generation, transmission and distribution equipment such as circuit breakers, regulators, phase shifters, tank diverter switches and capacitor banks for respectively separated phases of a plural phase transmission or distribution line is filtered for removal of accumulated water, carbon particles and other contaminants by filters in oil circuits respective to each phase in the plurality. Each oil circuit respective to each circuit breaker includes a respective filter and circulation pump. However, all pumps in the plural phase power system, for example, are driven by the same motor and drive line whereby a fluid condition or circulation interruption of one oil circuit that requires termination of pump operation in the one oil circuit terminates the pump operation in all oil circuits. Pump motor power is preferably drawn from an energy source that may be independent of that served by the transmission and/or distribution power source.

1 . A cooperative set of power control and/or regulation devices, each device having operative control over a single power phase respective to a plural phase electric power generation, transmission or distribution line, each said device being substantially immersed in a respective reservoir of dielectric insulating fluid, said cooperative set further comprising:
 a pump, a filter and flow conduits connected to an insulating fluid reservoir respective to each of said devices to channel a flow of said dielectric insulating fluid respective to each reservoir about a circulation loop; and,   a common drive line between a single drive element and all pumps in said cooperative set.   
   
   
       2 . A cooperative set of power control and/or regulation devices as described by  claim 1  wherein each circulation loop further includes fluid condition monitors having independent drive termination control over said drive line. 
   
   
       3 . A cooperative set of power control and/or regulation devices as described by  claim 1  wherein each circulation loop further includes fluid condition monitors having independent drive termination control over said single drive element. 
   
   
       4 . A cooperative set of power control and/or regulation devices as described by  claim 1  wherein all of said pumps are intimately combined. 
   
   
       5 . A cooperative set of power control and/or regulation devices as described by  claim 1  wherein housings respective to all of said pumps are combined about a common drive shaft driven by a single motor. 
   
   
       6 . A cooperative set of power control and/or regulation devices as described by  claim 5  wherein said motor is energized by a power source that is substantially independent of power carried by said power generation, transmission or distribution line that is controlled and/or regulated by said devices. 
   
   
       7 . A cooperative set of power control and/or regulation devices as described by  claim 1  wherein all of said filters and pumps are housed within a single enclosure.