DL/T 1178-2024 in English
VALID1000kV AC power fittings corona and radio interference test methods
- Issued on:2024-12-25
- Implemented on:2025-06-25
- File Format:PDF
- Delivery:RFQ
Price(USD)：
RFQ
| Standard No: | DL/T 1178-2024 |
| Document status: | VALID |
| Title in English: | 1000kV AC power fittings corona and radio interference test methods |
| Title in Chinese: | 1000kV交流电力金具电晕及无线电干扰试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | RFQ |
| Issued on: | 2024-12-25 |
| Implemented on: | 2025-06-25 |
| ICS Classification: | 29.240.01-Power transmission and distribution networks in general |
| Chinese Classification: | K44-Complete equipment for high voltage device |
| Professional Classification: | DL-Electricity |
| Related Keywords: | radio interference test
radio interference test methods introduction technical evolution key test methods radio interference test voltage single calculation formula formulas |
Introduction
Technical evolution and core changes of standards
| Technical elements | 2012 edition | 2024 edition | Significance of the upgrade |
|---|---|---|---|
| Altitude correction | Limited to below 3000m | Expanded to 5000m | Adapt to high altitude projects such as Qinghai-Tibet Plateau |
| Definition of test voltage | Single calculation formula | Formulas for altitude intervals (5)-(7) | Improve calculation accuracy |
| Measurement frequency | Fixed at 0.5MHz | 0.5-2MHz optional | Enhanced anti-interference ability |
Analysis of key test methods
1. Visible corona test
Note when using UV imager for observation:
- Gain adjustment range of solar-blind equipment0-100%
- Lens zoom ratio≥15 times
- Refer to DL/T345 operating specifications
2. Radio interference test
Typical problem solutions: When background interference>30%:
- Check test circuit shielding
- Change measurement frequency point
- Use differential measurement technology
Implementation suggestions
1. Test environment control
Must strictly monitor: temperature10-40℃, humidity20-70%, wind speed≤5
2. Special working condition processing
| Working condition type | Processing plan |
|---|---|
| Pollution conditions | Use salt spray simulation device |
| High altitude test | Apply formula (7) for correction |
3. Data recording specifications
Must include:
- Start/extinguish voltages for three pressurization cycles
- UV imaging photon counting data
- Frequency domain characteristics of radio interference
Sample only — not a preview of DL/T 1178-2024
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