一种新型箱式变电站中低压结构及箱式变电站

Abstract

本实用新型公开了一种新型箱式变电站中低压结构及箱式变电站，该中低压结构包括中压单元和低压单元，所述中压单元和低压单元通过隔板呈前后设置于中压室和低压室内，所述中压单元包括中压断路器、中压电流互感器及中压电压互感器，所述中压电流互感器位于所述中压电压互感器的上方，所述中压断路器的隔离侧与所述中压电流互感器连接，所述中压电流互感器的输出端与所述中压断路器的接地侧连接，该接地侧通过铜排与所述中压电压互感器连接。本实用新型在不影响使用的情况下，将箱式变电站的整体尺寸有效减小，并降低了成本。

Claims

1. A novel low voltage structure in a box-type substation, characterized by, It includes a medium-voltage unit and a low-voltage unit, which are arranged one behind the other in the medium-voltage compartment and the low-voltage compartment respectively, separated by a partition. The medium-voltage unit includes a medium-voltage circuit breaker, a medium-voltage current transformer, and a medium-voltage voltage transformer. The medium-voltage current transformer is located above the medium-voltage voltage transformer. The isolation side of the medium-voltage circuit breaker is connected to the medium-voltage current transformer. The output terminal of the medium-voltage current transformer is connected to the grounding side of the medium-voltage circuit breaker. The grounding side is connected to the medium-voltage voltage transformer through a copper busbar.

2. A novel box-type substation medium-low voltage structure according to claim 1, characterized in that, The copper busbar is equipped with cables for connecting the medium-voltage terminals of the transformer unit.

3. A novel box-type substation medium-low voltage structure according to claim 1, characterized in that, The low-voltage unit includes a low-voltage circuit breaker, which is connected to a copper busbar for connecting the low-voltage terminals of the transformer unit.

4. A box-type substation, characterized by The substation includes a transformer unit and high-voltage units located on the left and right sides of the transformer unit, and a medium- and low-voltage structure as described in any one of claims 1-3. The high-voltage units are connected to the high-voltage terminals of the transformer unit via cables, the medium-voltage units of the medium- and low-voltage structure are connected to the medium-voltage terminals of the transformer unit via cables, and the low-voltage units of the medium- and low-voltage structure are connected to the low-voltage terminals of the transformer unit via copper busbars.

5. A box-type substation as claimed in claim 4, characterized in that The high-voltage unit includes a high-voltage circuit breaker, a high-voltage current transformer, and a high-voltage voltage transformer. The high-voltage current transformer is located above the high-voltage voltage transformer. The isolation side of the high-voltage circuit breaker is connected to the high-voltage current transformer. The output terminal of the high-voltage current transformer is connected to the grounding side of the high-voltage circuit breaker. The grounding side is connected to the high-voltage voltage transformer through a copper busbar.

6. A box-type substation as claimed in claim 4, characterized in that The high-voltage side of the transformer unit is connected to the high-voltage unit via a high-voltage connection flange and bolts.

7. A box-type substation as claimed in claim 4, characterized in that The low-voltage side of the transformer unit is connected to the medium-voltage unit and the low-voltage unit via a low-voltage connecting flange and bolts.

8. A box-type substation as claimed in claim 4, characterized in that The transformer unit, high-voltage unit, and medium- and low-voltage structure are installed on the substation base.

9. A box-type substation as claimed in claim 4, characterized in that The outer side and top surface of the transformer unit are respectively provided with protective plates, and ventilation holes are provided on the protective plates.

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