The renewable energy development is growing at rapid rate due to feasibility for having bulk power generation using the wind and solar power plants. However, the renewable energy sources have intermittent nature and therefore, interconnection of the same with main grid is going to be challenging. This paper presents application of point-on-wave switching for integration of renewable sources on main grid in context to handing switching transients. In this context application of point-on-wave switching for energization of power transformer connected to large renewable power plant while connecting the plant to main grid is explained with supported results obtained from field implementation. Consequently, the mitigation of switching transients and obtained improvement in grid stability is also discussed. The impact of variation in CB characteristics on repeatability in mitigation performance is demonstrated with field results. Lastly, application of point-on-wave switching with both single pole operated as well as mechanically gang operated CB is explained with suggested switching strategies.
Renewable generation, Point-on-wave switching, Switching transients, Mechanical staggered gang operated circuit breaker
