DL/T 2009-2019 in English
VALIDTechnical specification for protection configuration and setting of controlled shunt reactor of eztra high voltage
- Issued on:2019-06-04
- Implemented on:2019-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
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$272.00
$272.00
| Standard No: | DL/T 2009-2019 |
| Document status: | VALID |
| Title in English: | Technical specification for protection configuration and setting of controlled shunt reactor of eztra high voltage |
| Title in Chinese: | 超高压可控并联电抗器继电保护配置 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2019-06-04 |
| Implemented on: | 2019-10-01 |
| Professional Classification: | DL-Electricity |
| Related Topics: | controllable
relay protection in parallel shunt reactor Shunt reactor overvoltage Relay protection screen diagram Photovoltaic power station relay protection configuration and setting technology dl/t2011-2019 dl/t1966-2019 dl/t5784-2019 dl/t5787-2019 Controllable high resistance dl/t 5786-2019 dl/t 799 -2019 dl/t 5796-2019 |
Introduction
Analysis of the core content of the standard
| Protection type | Transformer type CSR | Magnetic control type CSR |
|---|---|---|
| Main protection | Magnetic balance differential, grid side differential, zero sequence differential | Main reactor differential, zero sequence differential |
| Turn-to-turn protection | Sensitivity ≥ 3% turn-to-turn fault | Grid side/auxiliary winding detection required |
| Backup protection | Overcurrent setting 1.4-2In | Re-voltage overcurrent coordination tripping |
Key technical requirements
Magnetic balance differential protection
Adopt the ampere-turn balance principle of control winding and grid-side winding, requirements:
- Differential quick-break action time ≤20ms (2 times the set value)
- Ratio differential action time ≤50ms
- CT ratio difference requires software compensation
Implementation suggestions
- CT selection: The balance coefficient should be <10, and the CT characteristics of the 3/2 connection branch should be consistent
- Settings management: Set multiple switchable setting groups to prevent false operation during the switching process
- Grid coordination: Line phase current differential should be included in the CSR current
Typical configuration scheme
// Transformer type CSR protection logicif(magnetic balance differential start&& !CT line break){ Instantaneous trip grid side circuit breaker; Start remote trip on the opposite side line; } // Magnetic control type CSR additional function T zone protection action range needs to overlap with reactor protection Sample only — not a preview of DL/T 2009-2019
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