GB/T 43769-2024 in English
VALIDIntercity maglev traffic—Fixed installations of medium and low speed maglev—Traction power supply system
- Issued on:2024-03-15
- Implemented on:2024-03-15
- File Format:PDF
- Delivery:Within 1 day
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| Standard No: | GB/T 43769-2024 |
| Document status: | VALID |
| Title in English: | Intercity maglev traffic—Fixed installations of medium and low speed maglev—Traction power supply system |
| Title in Chinese: | 城际磁浮交通 中低速磁浮地面设备 牵引供电系统 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2024-03-15 |
| Implemented on: | 2024-03-15 |
| Professional Classification: | GB-National Standard |
| Related Keywords: | low speed maglev traction power supply system introduction
traction power supply system low speed maglev transportation intercity maglev traffic fixed installations cross-zone power supply |
| Related Topics: | Technical specifications for equipment of medium and low speed maglev traffic turnout system
Normal temperature maglev Maglev Medium and low speed maglev transportation power supply technology Maglev International Magnetic Bearings International Design of embedded maglev transportation system Magnetic Bearing International |
《GB/T 43769-2024城际磁浮交通 中低速磁浮地面设备 牵引供电系统》由TC278（全国轨道交通电气设备与系统标准化技术委员会）归口，TC278SC3（全国轨道交通电气设备与系统标准化技术委员会牵引供电分会）执行，主管部门为国家铁路局。
Introduction
1. Background and significance of standard formulation
GB/T 43769-2024 "Traction power supply system for medium and low speed maglev transportation" is an important standard formulated to meet the needs of the development of inter-city medium and low speed maglev transportation and to regulate the composition, technical requirements and test methods of its traction power supply system. The release of this standard marks a key step in the standardization construction of my country's maglev transportation field, filling the gap in the domestic medium and low speed maglev transportation electrical equipment standards.
2. System composition and technical requirements
| System composition | Technical requirements | Key parameters |
|---|---|---|
| Traction substation | - The number, capacity and layout are determined according to the line conditions; - The AC medium voltage bus adopts a single bus or segmented wiring, and the DC bus adopts a single bus. | Nominal voltage: 750V, 1500V |
| Traction network | - Including contact rail system, feeder cable and return cable; - The dynamic contact force calculation is required for the current matching between the contact rail and the receiving shoe. | Dynamic contact force range: maximum 500N, minimum V0 |
| Contact rail system | - Steel-aluminum composite rails are used, and the positive and negative poles are arranged separately; - Expansion joints and ordinary joints must ensure electrical continuity. | Current carrying capacity: not less than the current carrying capacity of the steel-aluminum composite rail body |
3. Requirements for key equipment and components
Medium voltage AC switchgear and DC switchgear must comply with the provisions of GB/T 3906 and GB/T 10411, and rectifier transformers and rectifiers must comply with the technical standards of CJ/T 370 and GB/T 18494.1. The strength safety factor of the supporting device must meet the requirements in the table, and the tensile safety factor of the composite insulator must be ≥5.0.
4. Implementation suggestions and application cases
Case analysis: Implementation of traction power supply system for an intercity maglev line
In actual applications, it is recommended to strictly follow the standards for equipment selection and system design. For example, when selecting a rectifier unit, the equivalent 24-pulse rectifier method should be used first, and its load characteristics should be ensured to meet the requirements of Class VI. At the same time, high-efficiency and energy-saving equipment should be used for the ground utilization system of regenerative braking energy to reduce energy waste.
During the test phase, it is necessary to focus on cross-zone power supply testing and DC short-circuit testing of the traction network to ensure the stability and safety of the system. Through the monitoring and analysis of actual operation data, the performance parameters of the traction power supply system are continuously optimized.
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