The ABB RED670 is a high-end line differential protection device of the ABB Relion 670 series. The model 1MRK002311-AAR02 is a standard customized industrial control version, specially designed for high-voltage and ultra-high-voltage transmission line systems. Integrating line differential main protection, backup protection, measurement and control, communication and fault recording functions, it adopts mature optical fiber differential transmission technology to quickly and accurately identify internal and external line faults, with excellent system stability and anti-interference ability. It serves as the core protection and measurement control equipment for power transmission and distribution systems.
Applicable to high-voltage overhead lines, cable lines and hybrid transmission lines, this device supports multi-terminal line differential protection, meeting core requirements such as power grid steady-state monitoring, rapid fault removal and system safety control. It is widely used in substations, power grids, industrial and mining self-provided power stations. Featuring high calculation accuracy, fast operation speed, convenient operation and maintenance and strong compatibility, it fully complies with the digital and intelligent operation and maintenance standards of modern smart grids.
As the core protection and measurement control equipment for high-voltage transmission lines, this device is mainly used for fault protection, real-time monitoring and stability control of power system transmission lines to ensure the safe and stable operation of transmission and distribution lines and back-end equipment. The main application scenarios are as follows:
- Power Grid Industry: Main protection and measurement control for 10kV~220kV high-voltage transmission lines, tie lines and cable lines in substations at all levels, applicable to provincial, municipal and county power grid operation and maintenance systems.
- Industrial Self-provided Power Stations: Differential protection and stability control for factory high-voltage transmission lines and grid-connected lines of large industrial enterprises such as steel, chemical, coal and papermaking.
- New Energy Power Generation: Protection for high-voltage outgoing lines of photovoltaic and wind power stations, adapting to new energy grid-connected scenarios and solving power grid fluctuation and line fault protection problems.
- Rail Transit & Municipal Power: High-voltage power supply line protection for high-speed railway, subway and key municipal projects, ensuring the power supply continuity and safety of important loads.
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