Description
ABB REF615E_1G HBFGDAAHNDCCBNA11G
I. Basic Information
Model：REF615E_1G HBFGDAAHNDCCBNA11G
Brand：ABB (Original), Relion® 615E enhanced series intelligent feeder protection and control IED, an upgraded version of standard REF615, optimized for complex medium-voltage distribution networks, industrial heavy-load power and new energy grid-connected scenarios.
Product Positioning
The REF615E_1G is a high-end enhanced feeder protection and control device of ABB Relion® 615 series with 1G function enhancement package. It upgrades earth fault judgment, voltage sequence protection, harmonic monitoring and circuit breaker condition monitoring on the basis of standard version. Integrating relay protection, high-precision electrical measurement, intelligent switch control, fault recording, sequence event recording and high-speed multi-protocol communication, it adapts to complex 10kV/35kV feeder working conditions and accurately processes intermittent grounding, load impact, three-phase unbalance and harmonic interference faults. It is widely used in urban distribution networks, industrial factory power, distributed new energy grid connection and high-end intelligent substations, serving as a high-performance integrated secondary protection and measurement equipment with both universality and enhanced special functions.
Hardware Architecture
Adopting 4U compact modular enhanced hardware architecture and ABB industrial high-speed processor, the device is equipped with upgraded high-precision AD sampling units and full-link digital sampling operation, eliminating temperature drift and zero offset of analog circuits with improved sampling stability and fault response speed. It integrates independent high-precision sampling loops, high-capacity programmable I/O matrix, dedicated hardware fault judgment modules and large-capacity fault recording storage, with adaptive interfaces for upgraded circuit breaker condition monitoring. The internal full physical isolation of strong and weak current is equipped with multi-level lightning surge suppression, EMI shielding, static protection and filter circuits, achieving complete electrical isolation of all loops and greatly improved resistance to harmonic and strong electromagnetic interference. Equipped with high-definition LCD HMI and multi-level indicators, it supports on-site setting, fault tracing and loop commissioning. Built-in full-dimensional hardware self-diagnosis monitors sampling, communication, power and temperature in real time with active alarm and fault tolerance to ensure 7×24-hour stable operation.
Mounting Specification
Adopts standard 4U cabinet embedded panel mounting, compatible with universal opening sizes of domestic power cabinets for dense layout of new and renovated substation secondary cabinets. With optimized reinforced structure and strict industrial anti-vibration, anti-shock, wide-temperature aging and dust/moisture resistance tests, it tolerates long-term substation temperature fluctuation, equipment vibration and slight dust/humidity. The front high-protection design and standardized rear partition wiring with separated strong/weak current ensure firm and anti-loosening installation, fully meeting long-term power operation standards and adapting to unattended substations, industrial high-voltage distribution rooms and new energy stations.
Compatible Systems
Fully compatible with intelligent substation automation systems, 10kV/35kV distribution network automation systems, industrial factory power monitoring systems, new energy grid-connected platforms, power SCADA scheduling systems and energy management systems. It seamlessly connects with upper monitoring background, engineer workstations, power RTU and PLC automatic control systems. Natively supports IEC61850, IEC60870-5-103, Modbus TCP/RTU, DNP3 and other mainstream power protocols, with SNTP and IRIG-B dual-mode high-precision time synchronization. It supports multi-device cluster networking, remote setting modification, program upgrade, telemetry/remote control and active fault information upload, adapting to various intelligent power operation and maintenance systems.
Product Characteristics
1. Equipped with 1G enhanced function package, upgrading advanced earth fault protection, voltage sequence monitoring, harmonic analysis and circuit breaker condition monitoring for complex grid difficult faults;
2. High-precision digital sampling architecture with strong harmonic and anti-interference capability, ensuring accurate fault judgment under complex distorted waveforms without sampling drift;
3. Integrated multi-function design of protection, measurement, control, recording, communication and event recording without additional auxiliary equipment;
4. Full-loop electrical isolation and high-grade EMC protection resist strong electromagnetic interference and harmonic impact, eliminating protection misoperation and refusal;
5. High-speed multi-protocol networking and dual-mode precise time synchronization ensure low-latency and stable data transmission for unattended automatic operation;
6. Large-capacity local storage retains complete fault waveforms, action sequences and operation logs to support refined fault traceability and setting optimization;
7. Software programmable flexible configuration with strong universality and expandability, adapting to various grid renovation and new construction projects.
II. Technical Specifications
2.1 Electrical Sampling & Protection Parameters
Rated AC input: Secondary voltage 100V, secondary current 1A/5A adaptive, matching standard power transformers;
Rated frequency: 50Hz/60Hz adaptive with frequency accuracy ±2Hz, compliant with domestic and international power frequency standards;
Measurement accuracy: Three-phase voltage, current, power, power factor, frequency and energy meet power secondary metering standards; added harmonic distortion rate monitoring function with precise phase sampling;
Main protection functions: Basic protection (directional/non-directional overcurrent, zero-sequence overcurrent, thermal overload, over/undervoltage, frequency abnormality, breaker failure) + 1G enhanced protection (advanced directional earth fault protection, harmonic-based earth fault judgment, three-phase unbalance protection, voltage sequence protection, circuit breaker condition monitoring), optional arc protection;
Operation performance: Millisecond-level ultra-fast fault response with blind-spot-free complex fault judgment, supporting flexible tuning of multi-stage delay, interlock, mutual lock and auto-reclosing logic with high graded coordination accuracy;
Binary input: Multi-channel programmable passive inputs for breaker status, energy storage, remote/local switching, disconnector status, equipment alarm and temperature measurement signals;
Binary output: Multi-channel programmable relay outputs for breaker switching, fault alarm, system linkage interlock and remote signal output.
2.2 Power Supply & Power Consumption Parameters
Auxiliary power supply: DC80～250V / AC100～240V ultra-wide voltage adaptive power supply, compatible with conventional power operating power;
Power consumption: Enhanced low-power design with stable full-load operation and minimal temperature rise, no heat accumulation or device aging during long-term heavy-load operation;
Power protection: Built-in reverse connection prevention, over/undervoltage self-locking, transient surge suppression and grid fluctuation fault tolerance, adapting to complex on-site power conditions and instantaneous voltage impact.
2.3 Communication & Time Synchronization Parameters
Hardware interfaces: Standard RJ45 Ethernet and RS485 serial port, optional LC optical fiber port for redundant networking with upgraded transmission stability;
Supported protocols: Full compatibility with IEC61850 MMS, IEC60870-5-103, Modbus TCP/RTU, DNP3 Level2+ mainstream power protocols;
Time synchronization: SNTP network time synchronization (primary/backup dual servers) and IRIG-B hardware high-precision time synchronization with higher station-wide time accuracy;
Remote functions: Supports remote parameter tuning, program upgrade, real-time telemetry upload, remote switching and remote fault analysis & data export.
2.4 Environmental & Protection Parameters
Operating temperature: -25℃～+55℃, stable performance of protection, measurement, communication and harmonic monitoring without attenuation or parameter drift in full temperature range;
Storage & transportation temperature: -40℃～+70℃, no circuit aging, structural deformation or program loss during long-term storage and transportation;
Operating humidity: 5%～95%RH non-condensing, suitable for dry and clean enclosed distribution rooms and constant-temperature central control rooms;
Protection class: Front panel IP54, top IP40, rear panel IP20, dustproof and moistureproof for indoor power cabinet installation;
EMC performance: Compliant with the highest IEC61000 series EMC standards, with strong resistance to static, radiation, conduction, surge and harmonic interference.
2.5 Structural & Physical Parameters
Specification: Standard 4U embedded panel structure, dimension 177mm×177mm×201mm, compatible with mainstream power cabinet openings;
Weight: Approx. 4.1kg, reinforced lightweight anti-loosening structure for long-term cabinet vibration operation;
Mounting method: Standard embedded bolt fastening installation with accurate positioning and easy assembly for dense cabinet layout;
Material: Flame-retardant and anti-corrosion industrial shell with insulation and aging resistance for long-term uninterrupted power system operation.
III. Key Features
3.1 1G Enhanced Fault Judgment for Complex Grid Difficult Working Conditions
Equipped with exclusive 1G function enhancement package, the device upgrades directional earth fault precise judgment, harmonic-assisted earth fault identification, voltage sequence abnormality monitoring, three-phase unbalance protection and circuit breaker condition monitoring on the basis of standard logic. It accurately identifies intermittent grounding, high-resistance grounding, harmonic distortion faults and load impact abnormalities that are difficult for ordinary feeders to distinguish, effectively separating internal faults and external interference to eliminate protection misoperation, refusal and escalation tripping. Millisecond-level ultra-fast tripping isolates faulty circuits instantly, greatly improving complex grid fault disposal capability and adapting to new energy grid connection, industrial heavy load and high harmonic pollution distribution scenarios.
3.2 High-Precision Full-Dimensional Measurement & Control for Grid Lean O&M
Adopting upgraded high-speed AD digital sampling algorithm, it adds harmonic distortion rate, voltage unbalance degree and load fluctuation trend analysis on the basis of conventional electrical parameter monitoring, with metering-level measurement accuracy. It completely replaces traditional measuring instruments and simple measurement devices, realizing integrated protection, measurement, metering and power quality monitoring in one device. It simplifies cabinet configuration, reduces operation costs, and provides accurate data support for grid load regulation, power quality improvement, energy consumption statistics and setting optimization.
3.3 Local & Remote Dual Control for Unattended Automatic Operation
Supports local panel manual operation and background remote telecontrol dual modes for breaker local/remote switching, real-time status monitoring, equipment inspection and breaker condition diagnosis. Equipped with complete encrypted authority, remote control interlock, operation log traceability and anti-misoperation logic, it eliminates manual misoperation risks fundamentally. Compatible with mainstream intelligent substation and distribution network automation platforms, it realizes automatic fault location, isolation and line self-healing, fully adapting to unattended intelligent substation operation requirements.
3.4 Full-Capacity Fault Traceability for Accurate Fault Analysis
Built-in high-capacity non-volatile storage adds power quality data, breaker operation sequence and harmonic fault waveform storage compared with standard version, retaining full-process fault waveforms, protection action events, alarm records, operation logs and power quality abnormality data. It accurately records electrical changes, harmonic distortion and action sequence before and after faults, supporting background waveform analysis and accident review, providing complete data basis for complex difficult fault troubleshooting, grid hidden danger treatment and refined setting optimization.
3.5 High Anti-Interference & Stability for Harsh Power Conditions
The integrated protection design of full-loop electrical isolation, multi-level surge suppression and full-range electromagnetic shielding is specially optimized for harmonic interference, electromagnetic radiation and grid impact, passing high-grade power EMC tests. Adopting mechanical-free full-digital architecture, it operates stably in wide temperature range without parameter drift or logic disorder under high/low temperature, humidity, vibration and harmonic pollution conditions, with excellent environmental adaptability and long-term operational stability to meet 7×24-hour uninterrupted operation requirements.
3.6 Modular Programmable Configuration for Multi-Scenario Adaptation
Adopting upgraded modular software programmable architecture, basic protection, 1G enhanced functions, control strategy, I/O definition, communication parameters and time synchronization modes can be flexibly configured without hardware modification. It adapts to ordinary feeders, ring network lines, new energy grid connections, industrial heavy-load outgoing lines and bus sections, compatible with old substation renovation, new intelligent substation construction and industrial distribution automation upgrading, with superior universality and expandability over standard devices.
IV. Working Principle
The ABB REF615E_1G HBFGDAAHNDCCBNA11G enhanced feeder protection and control device realizes protection, measurement, power quality analysis, equipment monitoring and intelligent networking of complex medium-voltage feeders based on core mechanisms of high-speed digital sampling + 1G enhanced multi-dimensional intelligent fault judgment + graded protection linkage + power quality monitoring + real-time data interaction + full-sequence event traceability.
After power-on, the device automatically completes full hardware self-inspection, sampling calibration, communication initialization, 1G enhanced function module loading and station-wide time synchronization, and enters real-time monitoring standby status after passing self-check. Analog signals from VT/CT secondary circuits are converted into digital data via high-speed AD conversion. The core processor analyzes electrical amplitude, phase, frequency, load trend, sequence component and harmonic distortion characteristics in real time, and synchronously collects binary data such as breaker position, local/remote status, equipment alarm and breaker operation status to complete full-dimensional operation monitoring.
Under normal grid operation, the device continuously performs high-precision electrical measurement, power quality monitoring, load statistics, status monitoring and real-time data upload, maintaining stable two-way data interaction with upper monitoring and dispatch platforms. When feeders encounter short circuit, grounding, overload, voltage/frequency abnormality, three-phase unbalance, excessive harmonic distortion and equipment faults, the device invokes 1G enhanced judgment logic to accurately identify fault type and level by comparing real-time data with preset settings and thresholds. It outputs tripping signals according to tuned time limit and interlock logic to isolate faults instantly, meanwhile locking fault data, recording full-process waveforms and sequences, and actively uploading alarm information.
The device supports local manual operation and remote background telecontrol for parameter modification, setting tuning, switching control, program upgrade and loop verification. Full hardware self-diagnosis and function self-inspection are enabled during operation, actively alarming and locking abnormal logic for hidden dangers such as sampling abnormality, communication interruption, power failure, harmonic interference and hardware defects, fully ensuring safe, stable and intelligent operation of complex power distribution systems.
V. Application Scenarios
1. 10kV/35kV complex urban distribution networks: Precision protection, fault self-healing and power quality monitoring for urban cable ring networks, overhead hybrid lines and long-distance feeders;
2. Industrial heavy-load factory power: Comprehensive protection and condition monitoring for high-voltage outgoing lines, bus couplers and section switches in petrochemical, metallurgical and manufacturing industries with high harmonic and impact loads;
3. Distributed new energy grid connection: Feeder protection, anti-islanding control, harmonic monitoring and unbalance fault protection for PV and wind farm grid-connected feeders, adapting to new energy grid disturbance characteristics;
4. High-end intelligent substations: New high-standard substation construction and old substation upgrading, meeting the requirements of refined operation, power quality treatment and equipment condition monitoring;
5. Large public park power distribution: Safety protection, energy consumption monitoring and power quality management for high-voltage distribution circuits of transportation hubs, industrial parks and commercial complexes;
6. Special industrial power distribution scenarios: Protection and measurement for complex industrial distribution systems with severe harmonic interference, large load fluctuation and frequent intermittent faults.
