ABB REF615E-D Feeder Protection and Monitoring Relay

The ABB REF615E-D feeder protection and monitoring relay is a high-performance feeder protection device launched by ABB. It is specifically designed for protection, control, measurement and monitoring in utility substations and industrial power distribution systems. The following is a detailed introduction of this product:
I. Product Overview
Brand and Model: ABB REF615E-D
Product Type: Feeder Protection and Monitoring Relay
Product Series: ABB Relion® 615 Series Protection and Control Product Line

Main functions
Protection functions:
Overcurrent protection: Provides both directional and non-directional overcurrent protection to ensure that the equipment is protected when the current exceeds the set threshold.
Grounding protection: Supports various grounding protection methods, including directional grounding protection, admittance grounding protection, harmonic grounding protection, or power grounding protection, to meet the requirements of different power grid structures.
Thermal overload protection: Monitors the thermal state of the equipment to prevent damage due to overheating.
Voltage and frequency protection: Provides overvoltage, undervoltage, overfrequency, and underfrequency protection to ensure the stable operation of the power system.
Other protections: Also include phase failure protection, instantaneous/intermittent grounding protection, etc., providing comprehensive protection functions.
Control functions:
Breaker control: Supports local and remote control of breakers to achieve automatic operation of the equipment.
Isolating switch and grounding switch control: Provides electric control of isolating switches and grounding switches and their position indication, enhancing the safety of operation.
Automatic reclosing: Optional with automatic reclosing function for overhead feeders to improve power supply reliability.
Measurement and monitoring functions:
Electrical parameter measurement: Real-time monitoring of key parameters such as three-phase current, voltage, active power, reactive power, power factor, etc., providing support for the optimization and energy-saving analysis of the power system.
Power quality monitoring: Monitors current and voltage harmonics, voltage fluctuations, and voltage unbalance, helping users identify abnormal energy consumption.
Fault location and waveform recording: Provides fault location functionality to calculate the distance from the fault point to the substation; simultaneously records waveform data before and after the fault occurrence, providing detailed basis for accident analysis.
Status monitoring: Monitors breaker status, closing and opening circuit breaker states, CT circuit status, etc., ensuring the normal operation of the equipment.
Communication functions:
Supports multiple communication protocols: including IEC 61850 (including GOOSE message transmission and IEC 61850-9-2 LE process bus), Modbus, DNP3, and IEC 60870-5-103, etc., enabling data interaction and remote monitoring with upper computers or intelligent systems.
Redundant communication protocols: Supports parallel redundant protocols (PRP) and high availability seamless redundancy protocols (HSR), improving communication reliability and availability.
Time synchronization: Supports IEEE 1588 V2 high-precision time protocol to ensure time synchronization of equipment within the substation.

Technical Features
High Precision Measurement: Utilizing advanced measurement technology, it ensures the accuracy and stability of electrical parameter measurement.
Flexible Configuration: Supports multiple standard configurations, allowing users to select and customize according to actual needs; also provides a graphical configuration tool to facilitate users in setting protection logic and parameters.

Easy Integration:

Supports seamless integration with other power system equipment, enhancing the reliability and stability of the entire system.
User-friendly Interface: Equipped with a large-sized, easy-to-read LCD display and intuitive operation software, facilitating users in configuration, monitoring, and maintenance.
High Reliability: Adopting industrial-grade design, it can operate stably in harsh industrial environments; also provides comprehensive self-checking functions and fault diagnosis functions to ensure the normal operation of the equipment.

Application Scenarios
Public Substations: Used for protecting and controlling feeder equipment in public substations to ensure the safe and stable operation of the power system.
Industrial Distribution Systems: Applicable to distribution systems in various industrial fields, such as petroleum, chemical, metallurgy, and power, providing comprehensive protection and control functions.
New Energy Power Stations: Can be used for the collection lines protection of new energy power stations (such as wind farms, photovoltaic power stations), meeting the requirements of distributed power source access.Smart Grid: As an important component of the smart grid, it realizes the automatic control and intelligent management of the power system.