SMALL CAPACITY DISTRIBUTION SUBSTATION TOWER

摘要

PURPOSE:To improve insulation performance by positioning a disconnecting means switching only an exciting current of a transformer, in a gas filled container together with a high voltage equipment on a small capacity distribution substation tower consisting of equipment at high voltage side and low voltage side. CONSTITUTION:A CT1 is positioned on an intermediate part of a conductor Li connected to high voltage lines A and B of two systems shown in a single line diagram, and a PT is connected between two-phase conductors. The primary winding(high voltage side) of a gas insulated transformer TR is connected to the conductor Li through a gas insulated circuit breaker DS/ES provided with an earth contactor. A CT2 and a low voltage distribution line Lo are connected to the secondary winding(low voltage side) of the transformer TR through a low voltage circuit breaker MCCB. All high voltage equipment from the input terminals of the high voltage lines A and B to the output terminals on the secondary side of the transformer TR is disposed collectively in one gas filled container GC.