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Impact of Auto-Reclosing on Transmission to Dynamic Response of PSS Equipped Generator in Cirebon

While a single-phase auto-reclosing scheme is being an operation practice throughout Java-Bali interconnection systems, only some implement both single and three-phase auto-reclosing (SPAR and TPAR) scheme to support its self-healing grid concept. For a transmission line particularly connected to a generator bus, auto-reclosing scenario should be assessed to achieve both stability in power generation and transmission. This paper discusses the implementation of SPAR and TPAR on a radial transmission system supplied by a 660 MW of power system stabiliser (PSS) equipped coal-fired power station in Cirebon 150 kV subsystem. Synchronisation parameters and auto-reclosing sequence are proposed according to [1] and [2]. Dynamic simulations using power system analysis software consisting of several transmission fault scenarios have been performed using the dynamic model of the 660 MW turbine-generator in the Java-Bali interconnection system to observe the dynamic response of the generator in the grid. The simulation result shows that the proposed auto-reclosing scenario would maintain the transient stability in the grid while also restraining the generator from excessive duties that could lead to electrical or mechanical failures [3].