| 摘要 |
FIELD: electricity.SUBSTANCE: network is based on overhead power transmission lines (1), (2), (3), (4) with the voltage of 20 kV, 10 kV, 6 kV and (0.7-0.99) kV respectively. Lines (1), (2), (3) are connected through a single-transformer substation (5) 20(10)(6)/(0.7-0.99)/0.4 kV or 20(10)(6)/(0.7-0.99) kV by a circuit (6) to a transformer (7) winding of the overheard power transmission line (4) with voltage while by the other circuit (8) - to the transformer winding of the overheard power transmission line (9) with the voltage of 0.4 kV. Lines with the voltage of (0.7-0.99) kV are connected to consumers through individual step down pile-mounted transformer substations (0.7-0.99)/0.4 kV or (0.4-0.57)/0.23 kV with a switchgear cabinet of (0.23-0.4) kV. The network 4 is mounted both at non-insulated wires and self-supported insulated wires. The substation (5) is made as a three-phase transformer of 20(10)(6)/(0.7-0.99)/0.4 kV or a double-winding transformer of 20(10)(6)/(0.7-0.99) kV.EFFECT: improved reliability and economic benefits of distributing power networks for consumers.8 cl, 1 dwg |
