ABB 3BHE044249R0003 GDC806C0003 Generator control and protection device

ABB 3BHE044249R0003 / GDC806C0003 Technical Parameters and Functions

The ABB 3BHE044249R0003 (also referenced as GDC806C0003) is a control and protection module designed for use in ABB’s advanced power generation and industrial automation systems. This module is part of ABB’s Generator Protection and Control (GPC) or Excitation Control product lines, ensuring reliable operation and protection of synchronous generators, turbines, and associated power systems. Below is a detailed breakdown of its technical specifications and functionalities:

1. Key Technical Parameters

General Specifications

• Order Code: 3BHE044249R0003 / GDC806C0003
• Module Type: Generator Control and Protection Unit (part of ABB’s REG670 or Relion® 670 series).
• Compatibility:
  • Generators: Synchronous machines (hydro, gas, steam turbines).
  • Systems: Integrates with ABB’s System 800xA, MACH™, and third-party SCADA systems.

Electrical Specifications

• Power Supply:
  • Voltage: 48–250 V DC or 110–230 V AC (±20%).
  • Frequency: 50/60 Hz (for AC supply).
  • Power Consumption: <15 W (typical).
• Input/Output (I/O):
  • Analog Inputs: 16 channels (0–20 mA, 4–20 mA, ±10 V).
  • Digital Inputs: 24 channels (24–250 V DC, opto-isolated).
  • Digital Outputs: 16 channels (relay contacts, 250 V AC/30 V DC, 5 A).
  • Communication Ports: Ethernet, RS-485, and fiber-optic interfaces.

Protection Functions

• Generator Protections:
  • Overcurrent (51V, 51Q), Under/Overvoltage (27/59).
  • Under/Overfrequency (81H/81L), Loss of Excitation (40).
  • Stator/rotor earth fault (64G, 64R), Negative sequence (46).
  • Out-of-step (78), Thermal overload (49).
• Grid Protections:
  • Directional power protection (32/37), Reverse power (32).
  • Differential protection (87G) for generator-transformer units.

Control Functions

• Automatic Voltage Regulation (AVR): Maintains generator terminal voltage within ±0.5% of setpoint.
• Power Factor (PF) and Reactive Power (VAR) Control: Seamless grid synchronization.
• Load Sharing: Droop control for parallel generator operation.
• Black Start Capability: Supports islanded grid restoration.

Communication and Protocols

• Standard Protocols:
  • IEC 61850 (Edition 1/2) for substation automation.
  • Modbus TCP/RTU, DNP3.0, and IEC 60870-5-103/104.
• Redundancy: Dual Ethernet ports for redundant communication.
• Time Synchronization: IEEE 1588 Precision Time Protocol (PTP).

Environmental and Mechanical

• Operating Temperature: -25°C to +70°C (derating may apply).
• Storage Temperature: -40°C to +85°C.
• Humidity: 5–95% non-condensing.
• Protection Class: IP40 (front panel), IP20 (overall enclosure).
• Dimensions: 177 x 232 x 200 mm (W x H x D).
• Certifications: IEC 60255, IEEE C37.90, CE, UL, DNV-GL.

2. Core Functions and Features

Advanced Protection and Monitoring

• Adaptive Logic: Customizable protection schemes via ABB PCM600 software.
• Fault Recording: Stores oscillography, event logs, and disturbance data.
• Synchrophasor Measurement: Supports PMU (Phasor Measurement Unit) functionality for grid stability.

Human-Machine Interface (HMI)

• Local Display: Graphical LCD with menu-driven configuration.
• Remote Access: Web-based interface for real-time monitoring and diagnostics.

Integration and Scalability

• System 800xA Compatibility: Centralized control and data historization.
• Modular Design: Expandable with additional I/O modules or communication cards.
• Cybersecurity: Role-based access control, HTTPS/SSH encryption, and audit logging.

Reliability and Redundancy

• Hot-Standby Redundancy: Dual redundant modules for critical applications.
• Self-Diagnostics: Continuous health monitoring of hardware and firmware.
• Watchdog Timer: Automatic reset in case of software failure.

3. Applications

• Power Plants: Hydro, thermal, and combined-cycle power generation.
• Industrial Plants: Cogeneration systems, pulp/paper mills, and mining.
• Renewable Energy: Integration with wind/solar farms for grid stability.
• Marine and Offshore: Shipboard power management and offshore platforms.

4. Advantages

• High Precision: IEC 61850-compliant for future-proof substation automation.
• Flexibility: Supports legacy and modern communication protocols.
• Robustness: Designed for harsh environments (vibration, EMI, temperature extremes).
• Compliance: Meets global grid codes and industry standards.