Applied to high-speed railway traction substations, it is the core equipment for energy transmission and conversion in traction power supply systems. This product reduces no-load loss by 40% and load loss by 27% compared to products of the same type and model
Product Description
The traction transformer is applied in high-speed railway traction substations and is the core equipment for energy transmission and conversion in the traction power supply system. This product reduces no-load loss by 40% and load loss by 27% compared to products of the same type and model. It is the first energy-saving product in China, the first technical equipment in Shandong Province, and an excellent energy-saving achievement in Weifang City; And it has passed the national new product appraisal: the overall technical indicators of the product have reached the forefront level and can be promoted for use. This product has now been put into operation on high-speed railway lines such as Xinjiqing, Lunan, Weilai, Jilai, and Dalailong for power transmission.
Product features
The product has the characteristics of low loss, small partial discharge, low temperature rise, strong overload and short-circuit resistance.
1. Reduced the empty load loss of the product, improved capacity utilization, and achieved significant energy-saving effects.
2. Reduced short-circuit impedance and greatly increased terminal voltage of the line.
3. Improved short-circuit resistance and overload capacity, ensuring the operation of the transformer.
Technical parameter
1. The rated capacity, voltage combination, connection group number, no-load loss, load loss, no-load current, and short-circuit impedance of the 220kV single-phase traction transformer under direct power supply shall comply with the provisions in Table 1.
Table 1 Standard parameters of single-phase traction transformer for 220kV direct power supply mode
| Transformer capacity（kVA） | High pressure（kV） | Low pressure （kv） | Connection symbol | No-load loss（kW） | Load loss（kW） | No-load current（％） | Short circuit impedance（％） |
| 12500 | 220 ±2×2.5% ±3×2.5% ±4×2.5% | 27.5 | Ii6 Ii0 | 10 | 43 | 0.45 | 10.5； 12.5 |
| 16000 | 13 | 52 | 0.45 | ||||
| 20000 | 15 | 62 | 0.4 | ||||
| 25000 | 17 | 73 | 0.4 | ||||
| 31500 | 20 | 87 | 0.35 | ||||
| 40000 | 24 | 104 | 0.35 | ||||
| 50000 | 28 | 123 | 0.3 | ||||
| 63000 | 33 | 146 | 0.3 |
2. The rated capacity, voltage combination, connection group number, no-load loss, load loss, no-load current, and short-circuit impedance of 110kV and 220kV level three-phase VV connected traction transformers under direct power supply shall comply with the provisions in Tables 2 and 3
Table 2 Standard parameters of three-phase VV connected traction transformer for 110kV direct power supply mode
| Transformer capacity（kVA） | High pressure（kV） | Low pressure（kV） | Connection symbol | No-load loss（kW） | Load loss（kW） | No-load current（％） | Short circuit impedance（％） |
| 6300+6300 | 110 ±2×2.5% ±3×2.5% ±4×2.5% | 27.5 | Vv6 Vv0 | 10 | 57 | 0.4 | 8.4； 10.5 |
| 6300+8000 | 11 | 62 | |||||
| 8000+8000 | 13 | 68 | |||||
| 8000+10000 | 14 | 74 | |||||
| 10000+10000 | 15 | 80 | 0.4 | ||||
| 10000+12500 | 16 | 88 | |||||
| 12500+12500 | 17 | 95 | |||||
| 12500+16000 | 20 | 105 | |||||
| 16000+16000 | 21 | 115 | |||||
| 16000+20000 | 23 | 125 | 0.3 | ||||
| 20000+20000 | 25 | 135 | |||||
| 20000+25000 | 27 | 147 | |||||
| 25000+25000 | 29 | 160 | |||||
| 25000+31500 | 32 | 175 | |||||
| 31500+31500 | 35 | 189 | |||||
|
Note 1: When x1 and x2 are short circuited to ground, and T1 and T2 outputs, the transformer connection group label is Vv0; When T1 and T2 are short circuited to ground and output x1 and x2, the transformer connection group is labeled as Vv6. Note 2: The performance parameters of other products with different capacities can be determined by referring to this table. | |||||||
Table 3 Standard parameters of three-phase VV connected traction transformer for 220kV direct power supply mode
| Transformer capacity（kVA） | High pressure（kV） | Low pressure（kV） | Connection symbol | No-load loss（kW） | Load loss（kW） | No-load current（％） | Short circuit impedance（％） |
| 12500+12500 | 220 ±2×2.5% ±3×2.5% ±4×2.5% | 27.5 | Vv6 Vv0 | 19 | 88 | 0.4 | 10.5； 12.5 |
| 12500+16000 | 22 | 97 | |||||
| 16000+16000 | 24 | 105 | |||||
| 16000+20000 | 26 | 115 | 0.3 | ||||
| 20000+20000 | 28 | 125 | |||||
| 20000+25000 | 31 | 137 | |||||
| 25000+25000 | 33 | 148 | |||||
| 25000+31500 | 36 | 162 | |||||
| 31500+31500 | 39 | 176 | |||||
| 31500+40000 | 43 | 194 | |||||
| 40000+40000 | 47 | 210 | |||||
| Note 1: When x1 and x2 are short circuited to ground, and T1 and T2 outputs, the transformer connection group label is Vv0; When T1 and T2 are short circuited to ground and output x1 and x2, the transformer connection group is labeled as Vv6. Note 2: The performance parameters of other products with different capacities can be determined by referring to this table. | |||||||
3. The rated capacity, voltage combination, connection group number, no-load loss, load loss, no-load current, and short-circuit impedance of the 110kV level AT power supply single-phase traction transformer shall comply with the provisions in Table 4.
Table 4 Standard parameters of single-phase traction transformer for 110kV level AT power supply mode
| Transformer capacity（kVA） | High pressure（kV） | Low pressure（kV） | Connection symbol | No-load loss（kW） | Load loss（kW） | No-load current（％） | Short circuit impedance（％） |
| 6300 | 110 ±2×2.5% ±3×2.5% ±4×2.5% | 2×27.5 | Ii0i6 Ii0i0 | 6.8 | 21.45 | 0.4 | 8.4； 10.5 |
| 8000 | 8.0 | 26.00 | 0.4 | ||||
| 10000 | 9.6 | 30.55 | 0.4 | ||||
| 12500 | 11.2 | 36.40 | 0.4 | ||||
| 16000 | 13.6 | 43.55 | 0.4 | ||||
| 20000 | 16.0 | 51.35 | 0.3 | ||||
| 25000 | 19.2 | 60.45 | 0.3 | ||||
| 31500 | 22.4 | 72.15 | 0.3 | ||||
| 40000 | 27.2 | 86.45 | 0.3 | ||||
| 50000 | 32.0 | 102.1 | 0.3 | ||||
| 63000 | 38.4 | 120.9 | 0.2 | ||||
| 75000 | 43.2 | 138.5 | 0.2 | ||||
| Note: The rated capacity in the table refers to the value of the high-voltage winding; The short-circuit impedance in the table is the value under short-circuit conditions after the low-voltage T winding and F winding are connected in series; According to user needs, other short-circuit impedance values can also be used. | |||||||
4. The rated capacity, voltage combination, connection group number, no-load loss, load loss, no-load current, and short-circuit impedance of single-phase traction transformers with 220kV AT power supply mode shall comply with the provisions in Table 5
Table 5 Standard parameters of single-phase traction transformer for 220kV level AT power supply mode
| Transformer capacity（kVA） | High pressure（kV） | Low pressure （kV） | Connection symbol | No-load loss（kW） | Load loss（kW） | No-load current（％） | Short circuit impedance（％） |
| 12500 | 220 ±2×2.5% ±3×2.5% ±4×2.5% | 2×27.5 | Ii0i6 Ii0i0 | 12.80 | 37.05 | 0.4 | 10.5； 12.5 |
| 16000 | 14.40 | 44.20 | 0.4 | ||||
| 20000 | 18.40 | 52.00 | 0.4 | ||||
| 25000 | 21.60 | 61.75 | 0.4 | ||||
| 31500 | 25.60 | 73.45 | 0.3 | ||||
| 40000 | 30.40 | 87.75 | 0.3 | ||||
| 50000 | 36.00 | 104.00 | 0.3 | ||||
| 63000 | 43.20 | 123.50 | 0.2 | ||||
| 75000 | 48.80 | 141.70 | 0.2 | ||||
| 90000 | 56.00 | 162.50 | 0.2 | ||||
| Note: The rated capacity in the table refers to the value of the high-voltage winding; The short-circuit impedance in the table is the value under short-circuit conditions after the low-voltage T winding and F winding are connected in series; According to user needs, other short-circuit impedance values can also be used. | |||||||
Mobile application
