FIELD: electrics.
SUBSTANCE: invention concerns electrical equipment. Method is based on current unbalance factor reduction in three-phase feed line and transformer windings. Current leveling in step-down transformer phases is performed by single-phase load switching from one phase to another in 0.4 kV buses of step-down transformer by switches connecting load to buses and controlled by microcontroller. Load switching is performed on the basis of current unbalance factor minimisation in 0.4 kV buses of step-down transformer.
EFFECT: reduced electrical power loss in step-down transformer and in three-phase power transmission line feeding step-down transformation substation.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO INCREASE RELIABILITY OF STEP-DOWN TRANSFORMER SUBSTATION OPERATION IN DISTRIBUTION GRIDS 6( 10 )/0,4 kV | 2010 |
|
RU2432658C1 |
| METHOD TO INCREASE RELIABILITY OF POWER SUPPLY SYSTEM OPERATION | 2010 |
|
RU2432657C1 |
| METHOD OF POWER LOSSES REDUCTION IN 6( 10)-0,4 kV DISTRIBUTING CIRCUITS | 2007 |
|
RU2349012C1 |
| ELECTRIC ENERGY TRANSMISSION SYSTEM | 2011 |
|
RU2484571C1 |
| METHOD OF AC THREE-PHASE VOLTAGE POWER TRANSMISSION AND SYSTEM FOR ITS IMPLEMENTATION | 2007 |
|
RU2337451C1 |
| 25 KV ALTERNATING CURRENT SUPPLY SYSTEM FOR ELECTRIFIED RAILROADS | 2014 |
|
RU2552572C1 |
| DEVICE FOR NEUTRALIZING EQUALIZING CURRENT IN NEUTRAL BUS OF THREE-PHASE POWER TRANSMISSION LINE | 2016 |
|
RU2630778C1 |
| DOUBLE-TRACK SECTION AC POWER SUPPLY | 2012 |
|
RU2489277C1 |
| METHOD TO TRANSMIT ELECTRIC ENERGY | 2011 |
|
RU2475918C1 |
| TRIPLE THREE-PHASE POWER SYSTEM | 0 |
|
SU1422297A1 |
