SWITCHGEAR FOR POWER SYSTEM FEEDING POWER CONSUMERS OF BUILDING Russian patent published in 2004 - IPC

FIELD: power engineering.

SUBSTANCE: proposed switchgear has power line cables connected through transformers to sectionalizing buses, each of the latter being connected through controllable circuit breakers to consumer power line. Normally closed interlocked circuit breakers are installed in line interconnecting transformers and buses; sectionalizing buses are interconnected through sectionalizing circuit breaker. Switchgear incorporates stand-by diesel-electric generating unit whose output is directly connected to one of sectionalizing buses through normally open circuit breaker; normally open circuit breaker of power plant and normally closed circuit breakers interconnecting transformers and sectionalizing buses are mechanically interlocked and coupled with controllable change-over mechanism. Controller outputs are connected to controllable circuit breakers in power lines connecting power consumers to buses and to controllable change-over mechanism of interlocked circuit breakers. Dispatching server is furnished with software for parametric monitoring of power circuits and premises using readings of transducers and for generating control signals passed to mentioned controller or for yielding shift algorithm to mentioned controller. The latter is made in compliance with shift algorithm introduced there at least to implement minimal package of functions, for instance to disconnect at least part of consumer power lines during power plant starting period or in case of malfunction of separate power lines, to disconnect power supply line of building ventilation system in response to fire alarm signal, or to closure of normally open controllable circuit breaker when one of power lines is deenergized.

EFFECT: enhanced efficiency.

1 cl, 1 dwg