Sîstema Bûsa Elektrîk

Pêşkêşkirina Sistemiya Barra Elektrîk

Sistemiya barra elektrîk pêşkêşkirinên elektrîk û efektiv yên bixweberdan û rengkirina nîrgirîyek da ku di substation de were hatî.

Sistemiya Barra Yekan

Sistemiya barra yekan basit u ekonomîk e, lê biguherîneke xebitandinê bikarhêner ji bo xebitandina malpera.

Zelalên Sistemiya Barra Yekan

• Ev dizaynê basit e.

• Ev şema ekonomîk e.

• Ev hêsan e ji bo opereyasyon.

Nizalên Sistemiya Barra Yekan

• Tiştîk mezin bi vê rêzeyê ya ku xebitandin malpera dikare wekheviye hejmarên feeder an transformer.

• Boardên switch 11 KV di navendek de çiyaye hejmarên barra yekan.

Sistemiya Barra Yekan bi Barra Sectionalizer

Hemî zelalên tiştîn hatine destkirin êger barra yekan bi circuit breaker sectionalize bike. Eger hêman incoming û sources û outgoing feeders be ser sections tevahîn dibin, xebitandin sistema bi rastî hate werdigirin.

Zelalên Sistemiya Barra Yekan bi Barra Sectionalizer

Eger herce source di ser sistema ne, hêman loads dibejiyê bi kar bikarhêner sectional circuit breaker an bus coupler breaker. Eger sectionek barra system bi xebitandinê, part load substation bi energy other section barra.

Nizalên Sistemiya Barra Yekan bi Barra Sectionalizer

• Weseke sistemiya barra yekan, xebitandin malpera bay dikare nebejiyê bi xebitandin feeder an transformer.

• Kar îsolationer ji bo barra sectionalizing têk nedike. Îsolationeran dibejiyê bi kar bikarhêner 'off circuit' u ku nebejiyê bi total interruption bus-bar. Nêzîkîna bus-coupler breaker bûyî ye.

Sistemiya Barra Duway

Di sistemiya barra duway de du barra identik bi karanîna wê reke ku her outgoing an incoming feeder bi karanîna barrekan.

Gerçekten her feeder bi paralel individual isolatoran di navendek de têk barrekan. Bi serbestkirina her isolator, feeder bi barrekan. Her barrekan energy, u total feeders divîsibin bi du grup, grup bi barrek an jêr barrekan. Lâkin her feeder her dema bi transfer bikarhêner ji barrek bêrbar. Ev bus coupler breaker bi kar bikarhêner ji bo transfer operation. Ji bo transfer operation, ev bus coupler circuit breaker serbestker, isolator associated bus bi transfer, isolator associated bus bi transfer, isolator associated bus bi transfer, bus coupler breaker serbestker.

Zelalên Sistemiya Barra Duway

Arrangement Double Bus Bar zelalên sistema zêde kirin.

Nizalên Sistemiya Barra Duway

Arrangement breaker maintenance bi xebitandin.

Sistemiya Double Breaker Bus

Di sistemiya double breaker bus bar de du barra identik bi karanîna wê reke ku her outgoing an incoming feeder bi karanîna barrekan similar to double bus bar system. Gercivan dikarin her feeder bi paralel individual breaker instead only isolator.

Bi serbestkirina her breaker and its associated isolators one can put the feeder to respective bus. Both of the buses are energized, and total feeders are divided into two groups, one group is fed from one bus and other from other buses similar to the previous case. But any feeder at any time can be transferred from one bus to other. There is no need for bus coupler as because the operation is done by breakers instead of isolators.

For transfer operation, one should first close the isolators and then the breaker associated with the bus to where the feeder would be transferred, and then he or she opens the breaker and then isolators associated with the bus from where the feeder is transferred.

Sistemiya Ring Bus

Schematic diagram of the system is given in the figure. It provides a double feed to each feeder circuit, opening one breaker under maintenance or otherwise does not affect supply to any feeder. But this system has two major disadvantages.

One as it is a closed circuit system it is next to impossible to extend in future and hence it is unsuitable for developing systems. Secondly, during maintenance or any other reason, if any one of the circuit breaker in ring loop is switched off, the reliability of system becomes very poor as because closed loop becomes opened. Since at that moment for any tripping of any breaker in the open loop causes interruption in all the feeders between the tripped breaker and open end of the loop.