Background
Modern power systems demand higher reliability, real-time visibility, and operational efficiency.
Acrel-1000 Substation Integrated Automation System enables remote monitoring, control, and protection of substations up to 110kV, supporting unattended or minimal-attended operation.
Pain & Value
Your Pain Points
High OPEX from on-site staffing and unexpected outages causing production losses
Incompatibility with existing equipment
Hidden risks in circuit breakers, transformers, and cables not detected by periodic inspections
Our Acrel Value
Reduce OPEX by up to 40% through unmanned operation and preventive maintenance
Full compatibility with Modbus RTU/TCP, MQTT, and IEC 61850 protocols
Real-time monitoring of voltage, current, power, switch status, and fault recording for rapid root cause analysis
Solution
Acrel-1000 Substation Automation System
Acrel-1000 adopts a proven three-layer hierarchical architecture: Station Layer, Communication Layer, and Bay Layer.
The system integrates protection, telemetry, remote signaling, remote control, remote adjustment, and tele-pulse functions, enabling unattended or minimal-attended operation for substations up to 110kV.
Acrel-1000 provides end-to-end substation automation—from field device data acquisition to remote dispatch center communication—reducing manual inspection frequency and improving power supply reliability.
Station Layer
Industrial computer running Acrel-1000 software with human-machine interface for real-time visualization, historical data analysis, alarm management, and remote control.
Communication Layer
ANet series communication manager with ARM 32-bit processor and embedded Linux OS, supporting protocol conversion (Modbus RTU/TCP, IEC 60870-5-101/103/104, DLT-645, MQTT, IEC 61850), multi-platform data upload, remote configuration, and firmware upgrade.
Bay Layer
AM series protection relays with independent CPU and RAM per unit; AM6-L line protection, AM6-M motor protection, AM6-C capacitor protection, AM6-B automatic transfer switch, AM5SE series for transformer protection, and multifunction power meters.
- Monitoring & Display
Real-time one-line diagram, telemetry, tele-indication, switch status, alarms - Data Analysis
Electrical parameter query, curve query, reports, energy statistics, switch operation counts - Alarm & Event
Real-time alarm (voice, SMS, pop-up, blinking), historical event query - Advanced Functions
Power quality monitoring, network topology, remote control, fault recording, communication management, GPS time sync - Security
User permission management
Products
01. Line Protection & Feeder Protection
Targets: Overcurrent (3-stage), earth fault (2-stage I0), reclosing, low-frequency load shedding, over/under voltage, reverse power, synchro-check
Solves: Undetected line faults causing extended outages and equipment damage
Value: Fast fault clearing with auto-reclosing and directional protection options; power quality monitoring with APView500
Product: AM5SE-F + APView500
High-speed feeder protection relay with auto-reclosing and advanced measurement. Ideal for 35kV and below distribution networks.
Fast tripping <25ms
Auto-reclosing
Synchro-check
Multi-protocol
02.Transformer Protection
Targets: Differential current, restricted earth fault, overcurrent (3-stage), non-electrical signals (gas, temperature), overload
Solves: Internal transformer faults leading to catastrophic failure and extended downtime
Value: Integrated differential and backup protection for two-winding or three-winding transformers; dedicated non-electrical and backup protection
Product: AM5SE-D2, AM5SE-D3, AM5SE-TB, AM5SE-FD
Complete transformer protection suite including differential, backup, non-electrical and thermal monitoring. Suitable for 35kV and below power transformers.
Diff & backup integrated
2nd harmonic restraint
CT circuit failure lock
Non-electrical ready
03. Motor Protection
Targets: Overload, stall, phase imbalance, thermal overload, differential (large motors), negative sequence, locked rotor, start-up timeout, undervoltage
Solves: Unexpected motor trip causing production line stoppage or motor burnout
Value: Comprehensive protection with thermal replica, negative sequence, and differential for motors >2000kW; prevents motor damage
Product: AM5SE-M, AM5SE-MD
Advanced motor protection relay with thermal replica, negative sequence and optional differential. Protects LV and MV motors up to 10kV.
Thermal replica mode
Differential for large motors
Start-up supervision
Load jam protection
04. Capacitor Protection
Targets: Overcurrent (3-stage), over/under voltage, unbalanced voltage/current, harmonic overload, I0 earth fault
Solves: Capacitor bank failure causing power factor deterioration and harmonic resonance
Value: Automatic power factor correction with multiple protection elements; prevents capacitor explosion and system resonance
Product: AM5SE-C
Dedicated capacitor bank protection relay with unbalance detection and harmonic protection. Ensures safe operation of shunt capacitor banks.
Unbalance protection
Over/under voltage
Harmonic overload
Independent trip circuit
05. Automatic Transfer Switch (ATS)
Targets: Bus voltage (2 sections), incoming line status (2 lines), ATS logic for bus-tie or line-to-line configurations
Solves: Manual switching delay during power loss causes critical load interruption
Value: Seamless automatic source switching within configured time delay; supports multiple ATS modes with charge status indication
Product: AM5SE-B
Automatic transfer switch relay for critical loads. Provides seamless source switching in case of incoming failure. Supports bus-tie and line-to-line modes.
Multi-mode ATS
Charge status LED
Incoming voltage monitoring
Fast switching <100ms
06. PT Monitoring & Paralleling
Targets: PT secondary voltage (dual sections), ferroresonance detection, PT fuse failure, over/under voltage
Solves: PT fuse failure or ferroresonance causing voltage distortion and protection misoperation
Value: Automatic PT paralleling/de-paralleling with voltage monitoring; ferroresonance elimination by damping resistor injection
Product: AM5SE-UB
PT monitoring, paralleling and ferroresonance elimination relay. Ensures reliable voltage measurement for protection and metering.
PT auto paralleling
Ferroresonance damping
PT circuit failure detection
Dual section input
Application
Remote substations and switchgear in desert environments require reliable protection with minimal on-site staffing. Acrel-1000 enables remote monitoring and control, reducing operational risks.
Mission-critical facilities demand zero downtime and millisecond-level fault response. The system’s fault recording and fast protection ensure continuous IT equipment operation.
Large-scale facilities with multiple distribution rooms require centralized monitoring and energy management. Acrel-1000 integrates with energy efficiency platforms for operational optimization.
Solar and wind farms with distributed substations require IEC 61850 compliance for grid integration. The system supports standard protocols for seamless connection to utility dispatch centers.
Make Safety Visible, Operations Predictive, and Management Smart.
Contact us to build your customized, resilient substation solution.
