DL/T 5499-2015 in English
VALIDTechnical Code for Design of Electrical Secondary System of Converter Station
- Issued on:2015-04-02
- Implemented on:2015-09-01
- File Format:PDF
- Delivery:Via email within 10 business days
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| Standard No: | DL/T 5499-2015 |
| Document status: | VALID |
| Title in English: | Technical Code for Design of Electrical Secondary System of Converter Station |
| Title in Chinese: | 换流站二次系统设计技术规程 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 10 business days |
| Issued on: | 2015-04-02 |
| Implemented on: | 2015-09-01 |
| Professional Classification: | DL-Electricity |
| Related Keywords: | secondary system design
electrical secondary system protection system monitoring system system sensors |
| Related Topics: | Secondary range
secondary carrier double reheat technology secondary fluorescence technology secondary shunt technology Polarized secondary target technology Second technology demonstration dl/t422-2015 Secondary statistical instrument Secondary reheat technology DL/T 5499-2015 The whole process of SIS system design secondary |
Introduction
Standard Overview
DL/T 5499-2015 was approved and issued by the National Energy Administration. It standardizes the secondary system design of converter stations with voltage levels of ±800kV and below, including 13 chapters of technical content such as monitoring system and DC control protection.
Core Design Principles
| System Type | Configuration Requirements | Typical Equipment |
|---|---|---|
| Monitoring System | Dualized Network Structure | Server, Workstation, I/O Unit |
| DC Protection | Triple Measurement Circuit | Photoelectric Current Measurement Device |
| Valve Cooling System | Three-out-of-two Tripping Logic | Temperature/Flow Sensor |
Technical Innovation Points
UHV DC layered protection: It adopts a three-level protection architecture of valve group layer (12-pulsation valve group), pole layer and bipolar layer. The sensitivity of the valve group-connected bus differential protection is increased by 40%
Typical application: Jinsu ±800kV project realizes bipolar power dynamic balance through valve group coordination control function
Implementation suggestions
- The control and protection system should pass the electromagnetic compatibility test (in compliance with DL/T 1087)
- The valve cooling system sensors are configured with redundant channels according to the two out of three principle
- Special trough boxes are used for optical cable laying, and they are arranged in layers with non-power cables
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