Description
Product Overview
The ABB UFC760BE145 3BHE004573R0145 is a sophisticated, fully digital Excitation Controller or Automatic Voltage Regulator (AVR), belonging to the UNITROL® 1000 series, specifically the UNITROL® 6800 or a related high-performance line. This device is the intelligent control core for the static excitation system of synchronous generators and synchronous motors. Its primary function is to provide precise, fast, and reliable regulation of the generator’s terminal voltage and reactive power (VArs) by controlling the direct current fed into the generator’s rotor field winding via a thyristor bridge. The controller continuously monitors generator parameters (stator voltage, stator current, field current, frequency, power factor) and, using advanced digital control algorithms, dynamically adjusts the firing pulses to the thyristors to maintain the set voltage, support the grid during disturbances, and enforce protective limits. The suffix
3BHE004573R0145is the unique order code specifying the exact hardware configuration, I/O options, communication interfaces, and firmware version.The value of the ABB UFC760BE145 lies in its advanced control capabilities, high availability, and seamless grid integration. It is engineered to enhance generator performance, transient stability, and overall power system reliability. The controller incorporates adaptive control loops, a built-in Power System Stabilizer (PSS) to damp electromechanical oscillations, and comprehensive protection functions for the generator and exciter. Equipped with multiple communication protocols (including IEC 61850), it serves as an intelligent node within modern digital substations and plant control systems. For operators of power plants, industrial co-generation facilities, and large synchronous motor drives, the UFC760BE145 represents a state-of-the-art solution that ensures optimal generator operation, provides essential grid support services, and delivers deep diagnostic insights for condition-based maintenance, all within a single, robust, and user-friendly unit.
Technical Specifications
|
Parameter Name
|
Parameter Value
|
|---|---|
|
Product Model
|
ABB UFC760BE145 3BHE004573R0145
|
|
Manufacturer
|
ABB
|
|
Product Series
|
UNITROL® 1000 (likely UNITROL® 6800 series)
|
|
Product Type
|
Digital Excitation Controller / Automatic Voltage Regulator (AVR)
|
|
Control Functions
|
Automatic Voltage Regulation (AVR), Field Current Regulation (FCR), Reactive Power/Power Factor Control, V/Hz Limiter.
|
|
Power System Stabilizer (PSS)
|
Integrated, multi-band or dual-input PSS for superior damping of power oscillations.
|
|
Protection Functions
|
Over/Under Excitation Limiter (OEL/UEL), Volts per Hertz (V/Hz) Protection, Field Overcurrent, Loss of Excitation (40G), Stator/ Rotor Overload.
|
|
Measurement Inputs
|
Generator Terminal Voltage (VT), Stator Current (CT), Field Voltage/Current, Breaker Status, Synchronizing signals.
|
|
Control Outputs
|
Firing pulses to thyristor bridges (via fiber optics), analog outputs, relay outputs for alarms and tripping.
|
|
Communication Interfaces
|
Multiple ports: Ethernet (IEC 61850-8-1 MMS, Modbus TCP/IP), Serial (RS485/RS232 for Modbus RTU, IEC 60870-5-103), USB for service.
|
|
Human-Machine Interface
|
High-resolution color touch screen display with intuitive menu navigation for local operation and monitoring.
|
|
Redundancy Support
|
Can be configured in hot or cold standby redundant configurations for high availability.
|
|
Power Supply
|
Dual-redundant, wide-range DC or AC supply (e.g., 24-48/110-230 V DC/AC).
|
|
Operating Temperature
|
0°C to +60°C (for controller cabinet).
|
|
Certifications
|
Complies with major grid codes, IEEE 421.5, IEC 60255, IEC 61850, UL, CE. Suitable for demanding grid interconnection requirements.
|
Key Features and Advantages
ABB UFC760BE145 3BHE004573R0145 excels through its advanced adaptive control and grid support intelligence. A key advantage is its multi-band Power System Stabilizer (PSS), which actively damps both local and inter-area modes of power oscillations, significantly enhancing the stability limits of the power system. The controller uses adaptive algorithms that optimize performance across the generator’s entire operating range, providing excellent voltage regulation (typically within ±0.5%) and fast response to load changes or system faults. This ensures high power quality and supports grid stability during disturbances.
Comprehensive protection and diagnostic suite are integral to its design. The controller incorporates a full set of generator and excitation system protections, such as loss of excitation and over/under excitation limiters, which protect the asset from damage. Extensive built-in diagnostics continuously monitor the health of the controller, its I/O, communication links, and the connected thyristor power unit. Detailed event logging and disturbance recording (with oscillographic data) provide invaluable tools for post-event analysis and root cause determination. This diagnostic intelligence enables predictive maintenance and simplifies troubleshooting.
Future-proof connectivity and user-centric operation are key benefits. Native support for IEC 61850 (including MMS and GOOSE) makes it a cornerstone of the digital substation, enabling seamless engineering, interoperability, and reduced wiring. The intuitive color touch screen HMI allows for easy local configuration, real-time data viewing, and manual control. The controller can be seamlessly integrated with ABB’s plant-wide monitoring and optimization systems (like ABB Ability™). For generator owners, the UFC760BE145 delivers not only superior voltage control but also the tools and connectivity needed for modern grid compliance, asset performance management, and integration into smart grid initiatives.
Application Areas
The ABB UFC760BE145 is the excitation controller of choice for a wide range of synchronous machines in power generation and large industrial drives.
Its primary application is in utility-scale power generation:
-
Thermal Power Plants (Coal, Gas): For the main generator excitation.
-
Hydroelectric Power Plants: For both large and small hydro generators.
-
Nuclear Power Plants: For generator excitation systems requiring high reliability.
-
Combined-Cycle Gas Turbine (CCGT) Plants.
It is also used extensively in industrial power generation and co-generation facilities in industries like pulp & paper, chemicals, and metals. For synchronous condenser applications, it provides precise reactive power control for grid voltage support. Furthermore, it is applied in large synchronous motor drives for compressors, mills, and pumps. Essentially, the UFC760BE145 is deployed wherever a high-performance, feature-rich, and network-ready static excitation system is required for synchronous machines, typically in applications ranging from 10 MVA to several hundred MVA.
Related Products
-
ABB Thyristor Power Unit (e.g., UNITROL® PU): The controlled rectifier bridge that supplies the DC field current, commanded by the UFC760BE145.
-
Excitation Transformer: Provides the AC input power to the thyristor unit.
-
Field Circuit Breaker / Discharge Resistor: For protection and switching in the generator field circuit.
-
ABB Generator Protection Relay (e.g., REG670): A dedicated protection relay that works in conjunction with the AVR for comprehensive generator protection.
-
ABB ToolKit SPAC (Software for Plant Automation Control): The PC-based engineering tool for configuration, commissioning, and monitoring of UNITROL controllers.
-
ABB Ability™ Generator Insights: Digital solutions for advanced monitoring and performance optimization.
-
Voltage & Current Transformers (VTs/CTs): The instrument transformers providing measurement signals to the AVR.
Reviews
There are no reviews yet.