DL/T 2033-2019 in English
VALIDTest methods for power unit of high voltage variable frequency drive used in fossil-fuel power plants
- Issued on:2019-06-04
- Implemented on:2019-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
Introduction
Analysis of the core content of the standard
| Test category | Type test | Factory test | Routine test |
|---|---|---|---|
| Insulation test | √ | √ | √ |
| Electromagnetic compatibility test | √ | √ | √ |
| Load test | √ | - | √ |
Key technical requirements
1. Power unit composition
The main circuit must include core components such as input bus, rectifier, DC link, etc. The control circuit must integrate IGBT drive circuit and optical fiber communication circuit.
2. Key parameter standards
| Device | Voltage parameter | Current parameter |
|---|---|---|
| IGBT | >2UVN | >2IVN |
| Electrolytic capacitor | Lifespan>10000h@85℃ | |
Implementation points
Typical fault handling case
A power plant class=instrument>Power unit frequently reports over-temperature faults. After testing, it was found that: The cooling fan speed is insufficient, causing the IGBT junction temperature to exceed the limit of 150℃. Solution:
- Replace the fan and add speed monitoring
- Optimize the air duct design
- Modify the over-temperature protection setting
Standard Evolution Analysis
Compared with DL/T 1195-2012, this standard adds:
- AC electronic load test requirements
- IGBT double pulse test method
- Electromagnetic compatibility immunity classification standard
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