1 Scope
This document specifies the locomotive, rolling stock traction electric drive system (hereinafter referred to as "traction electric drive system") conditions of use, system components, technical requirements, test methods, test rules.
This document applies to AC drive locomotives, locomotives installed on the traction electric drive system, other types of vehicles traction electric drive system can refer to the implementation.
2 normative reference documents
The content of the following documents through the normative references in the text and constitute the essential provisions of this document. Among them, note the date of the reference document, only the date of the corresponding version applies to this document; do not note the date of the reference document, its latest version (including all the revision of the list) applies to this document.
GB/T 1402 Voltage for traction power supply systems for rail vehicles
GB/T 2900.25 Electrotechnical terminology for rotating motors
GB/T 2900.33 Electrical terminology power electronics
GB/T 2900.36 Electrical terminology electric traction
GB/T 4208-2017 Enclosure protection class (IP code)
3 Terminology and definitions
GB/T 2900.25,GB/T 2900.33,GB/T 2900.36,GB/T 25123.2 and GB/T 25122.1 as defined and the following terms and definitions apply to this document.
3.1
traction electric drive system
To achieve rail transit locomotives, locomotives and electric braking function, electrical energy and kinetic energy conversion of an electric drive system. Note: The system used in locomotives and rolling stock is characterized by the driving of AC motors and the control of all necessary related system equipment. [Source: GB/T 37863.1-2019, 3.1, with modifications]
4 Conditions of use
4.1 Environmental conditions
The traction electric drive system shall be capable of normal operation under the following environmental conditions:
a) The elevation of the rolling stock shall not exceed 1500 m, and the elevation of the locomotive shall not exceed 2 500 m, in accordance with GB/T 21413.1 and TB/T 3213
The regulations;
b) Atmospheric ambient temperature of 40 ℃ to +40 ℃. The working ambient temperature of the locomotive traction electric drive system is from 25 °C to +55 °C. The locomotive traction electric drive system can operate normally at an ambient temperature of 40 °C to -25 °C by strengthening the cold-proofing or preheating option, and the working ambient temperature for short-time operation (i.e. start-up phase) is from 40 °C to +70 °C. The working ambient temperature of the locomotive traction electric drive system is from -25 °C to +40 °C, and the storage temperature is -40 °C. 40 ℃, the storage temperature is -40 ℃ ~ +70 ℃;
c) relative humidity does not exceed 95% (the average monthly minimum temperature for the month is + 25 ℃); d) shock and vibration should comply with the provisions of GB/T 21563;
e) wind, rain, snow, sandy and dusty weather during normal operation and occasional salt spray and acid rain.
When the environmental conditions differ from the above requirements, they shall be determined by mutual agreement between the supplier and the user and shall be designed and used according to the agreement between the system or component manufacturer and the user. For example:
a) when used at higher altitudes, the reduction in dielectric strength and air cooling effects should be considered; b) when used in cold areas, cold-proof measures should be taken, etc;
c) When the temperature around the equipment is higher than the ambient atmospheric temperature due to confinement, proximity to heat sources and the effect of sunlight, its quotas should take into account the elevated temperature;
5 System components
5.1 AC-powered traction electric drive system
The AC-powered traction electric drive system is a system consisting of a traction transformer, traction converter, traction motor, traction control unit, chopper unit, braking resistor or overvoltage absorption resistor, isolating contactor (if any), equivalent connecting cable and equivalent cooling device, etc. The typical schematic diagram is shown in Figure 1.
5.2 DC-powered traction electric drive system
The DC-powered traction electric drive system is a system consisting of line reactors, traction converters, traction motors, traction control units, chopper units, braking resistors, isolated contactors (if any), equivalent connecting cables and equivalent cooling devices, etc. The typical schematic diagram is shown in Figure 2.
5.3 Diesel genset-powered traction electric drive system
The diesel generator set-powered traction electric drive system is a system consisting of a diesel generator set, traction converter, traction motor, traction control unit, chopper unit, braking resistor or overvoltage absorption resistor, isolation contactor (if any), equivalent connection cable and equivalent cooling device, etc. A typical schematic diagram is shown in Figure 3.
5.4 Combined power supply for the traction electric drive system
The combined power supply|electric drive system is a system consisting of a traction transformer (if any), a line reactor (if any), a diesel generator set (if any), an energy storage system (if any), a traction converter, a chopper unit, a braking resistor or an overvoltage absorption resistor, a traction control unit, a line contactor (if any), an equivalent connection cable and an equivalent cooling device, etc., where the energy storage system can be directly connected to the intermediate circuit of the traction converter, or connected to the intermediate circuit of the traction converter via a bi-directional or uni-directional charger, a typical schematic diagram of which is shown in Figure 4.
6 Technical requirements
6.1 General requirements
6.1.1 The traction electric drive system is a subsystem of the locomotive and shall conform to the relevant provisions of TB/T 3487, TB/T 3488 and other general technical conditions for locomotives; the traction electric drive system is a subsystem of the rolling stock and shall conform to the relevant provisions of TB/T 3600.
6.1.2 Under normal or prescribed conditions of use, the traction electric drive system shall be able to work normally in its rated or given working conditions.
6.1.3 The tractive force, electric braking force, power, motor speed and harmonic components of the primary current of the locomotive or rolling stock under continuous operating conditions shall be determined by agreement between the supplier and the customer.
6.1.4 The traction electric drive system shall be able to carry out traction and regenerative braking sequence logic control, torque characteristic output control, etc., to drive the motor to obtain the required traction/electric braking torque, to achieve locomotive, locomotive traction and electric braking operation, to meet the locomotive, locomotive power performance requirements.
6.1.5 Traction electric drive system should be able to work normally within the specified supply voltage range, should be able to adjust and control the output characteristics of the system according to the supply voltage, 4 bears according to the line power supply / absorption capacity to adjust and/or limit the locomotive, locomotive power, so that the locomotive, locomotive power and line power supply capacity to match.
6.1.6 traction electric drive system control power within the specified range of change, should be consistent with the provisions of GB/T 25119-2021 in 5.1, the system can work normally without any interference, no signs of failure. When the control power is interrupted, the system shall be able to leave the working state normally without any failure or functional disorder. When the control power is restored, the system shall be able to start up again in the normal sequence.
6.1.7 Where multiple traction motors are fed in parallel by a pulse width modulated (PWM) inverter, the power rating shall take into account uneven load distribution due to wheel diameter differences and/or differences in traction motor characteristics, as well as the effect of axle weight transfer when operating at different coefficients of adhesion.
6.1.8 It shall have network communication, status and fault recording functions, be able to accept control commands transmitted via the vehicle communication network and hardwiring, and be able to store and upload operational status and fault information.
6.1.9 Cooling system should consider the whole vehicle operating environment, cooling unit filter settings should be easy to clean, when the effective air intake area is reduced by 15% should still meet the traction electric drive system in the rated power under the operation of the cooling capacity requirements.
7 test method
7.1 General requirements
The traction transformer shall be tested in accordance with GB/T 25120. Traction converters should be tested in accordance with GB/T 25122.1.
8 Inspection rules
8.1 General rules
Traction electric drive system equipment test should be equivalent to the actual working conditions, or in the case of equipment performance can be guaranteed to meet the conditions of use.
Traction electric drive system within the equipment supporting the use of all equipment, such as traction transformers, traction converters, traction motors, semiconductor devices, reactors, capacitors, contactors, fans and resistors, etc., before installation should be through the factory inspection; if these devices have been attached to the corresponding technical standards through the factory inspection of the certificate of conformity, then after assembly can be carried out with the traction electric drive system-related functional tests and operational tests.
8.2 Inspection classification
Traction electric drive system equipment after assembly and put into use before, should be agreed with the user to test the standard. The test of the traction electric drive system is divided into the combination test, the research test and the loading operation test.
8.3 Combination test
The combination test is used to verify the quota, characteristics, performance and function of the traction electric drive system.
8.4 Research tests
Research tests are special tests carried out to obtain additional information on the performance of the traction electric drive system. The test results are not used as a basis for product delivery.
Bibliography
1 Scope
2 normative reference documents
3 Terminology and definitions
4 Conditions of use
5 System components
6 Technical requirements
7 test method
8 Inspection rules
Bibliography
