DL/T 307-2024 in English
VALIDOperation Regulations for 1000 kV AC Overhead Transmission Lines
- Issued on:2024-12-25
- Implemented on:2025-06-25
- File Format:PDF
- Delivery:RFQ
Price(USD)：
RFQ
| Standard No: | DL/T 307-2024 |
| Document status: | VALID |
| Title in English: | Operation Regulations for 1000 kV AC Overhead Transmission Lines |
| Title in Chinese: | 1000kV交流架空输电线路运行规程 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | RFQ |
| Issued on: | 2024-12-25 |
| Implemented on: | 2025-06-25 |
| ICS Classification: | 29.240.20-Power transmission and distribution lines |
| Professional Classification: | DL-Electricity |
Introduction
Core changes in the standard revision
| Revision dimensions | 2010 edition | 2024 edition | Technical significance |
|---|---|---|---|
| Structural framework | 7 chapters + 2 appendices | 10 chapters + 3 appendices | New modern operation and maintenance requirements such as environmental protection and visual inspection |
| Detection technology | Traditional manual inspection | Helicopter/UAV/visual collaborative inspection | Detection efficiency increased by 300% |
| Special sections | 5 categories | 9 categories (new bird-damaged areas, etc.) | Fine granularity of risk control |
Analysis of key technical requirements
1. Component operation and maintenance standards
Steel pipe towerAdd three new key indicators:
- Top cover sealing test (5.1.8)
- Flange drainage hole patency (5.1.8)
- Bending degree ≤0.1% (stricter than angle steel tower 0.2%)
2. New detection system
| Detection method | Applicable scenario | Cycle | Precision advantage |
|---|---|---|---|
| Visual inspection | Channel environment monitoring | ≤3 months | Millimeter-level identification |
| UAV inspection | Fitting defect identification | Replace 70% of manual work | 5cm positioning accuracy |
Implementation suggestions
Typical problem handling process
- Wire damage determination: Refer to Appendix A four-category classification standard
- OPGW maintenance: Focus on checking the remaining cable fixation (5.4.5)
- Grounding resistance correction: Apply the seasonal coefficient table (Table 5)
Note: A three-dimensional digital ledger should be established in important crossing areas, and sag measurement should be conducted at least once a year
Comparison of safety distance specifications
| Scenario | 2010 Edition | 2024 Edition | Rate of change |
|---|---|---|---|
| Vertical distance from residential area | 26m | 27m (single circuit) | +3.8% |
| Switching overvoltage gap (V string) | 6.2m | 6.7m | +8% |
Sample only — not a preview of DL/T 307-2024
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
