Description

The ABB UFC718AE01 HIEE300936R0101​is a high-performance automatic voltage regulator(AVR)and excitation controller manufactured by ABB,designed for the precise control of synchronous generators.This module serves as the intelligent core of a generator’s excitation system,meticulously regulating the field current to maintain stable terminal voltage and ensure optimal power output.It is engineered for maximum reliability and performance in both utility and industrial power generation applications.

Application Scenarios

In a hydroelectric power plant,grid frequency and load demands can change in seconds.A sudden loss of load could cause a generator’s voltage to spike dangerously,while a dip in grid voltage requires an immediate boost in excitation to provide support.The ABB UFC718AE01 HIEE300936R0101​is the critical component that manages this delicate balance in real-time.It continuously monitors the generator’s output voltage and current,dynamically adjusting the field current to the rotor to maintain a stable terminal voltage of,for example,13.8kV,regardless of load changes.This precise control prevents equipment damage,ensures power quality,and is essential for the generator’s stable parallel operation with the grid,directly addressing the core pain points of grid stability,equipment protection,and operational efficiency.

Parameter

Main Parameters

Value/Description

Product Model

ABB UFC718AE01 HIEE300936R0101​

Manufacturer

ABB Ltd.

Product Category

Excitation Controller/Automatic Voltage Regulator(AVR)

Input Supply

110-240 VAC/110-220 VDC(Typical for Aux.Power)

Generator Voltage Sensing

100-130 VAC(Line-to-Line)

Field Voltage Output

Up to 120 VDC(Dependent on external power stage)

Control Modes

Automatic Voltage Control(AVC),Power Factor Control,Var Control

Stability

Adjustable PID(Proportional-Integral-Derivative)parameters

Communication Interface

Optional fieldbus modules(e.g.,PROFIBUS,MODBUS)

Protection Features

Under/Over Excitation,V/Hz Limiter,Loss of Sensing

Operating Temperature

0°C to 60°C

Standards

IEEE 421,IEC 60034,CE Certified

Technical Principles and Innovative Values

The ABB UFC718AE01 HIEE300936R0101​utilizes advanced digital signal processing to provide unparalleled control and protection for synchronous generators.

Innovation Point 1:Adaptive Control Algorithms.​The ABB UFC718AE01 HIEE300936R0101​employs sophisticated,user-configurable PID control loops that can be tuned for the specific inertial and electrical characteristics of the generator and prime mover.This adaptability ensures excellent dynamic performance—damping oscillations quickly after a load change—and superior static voltage regulation,typically within±0.5%of the setpoint.

Innovation Point 2:Comprehensive Protection and Limiting Functions.​Beyond basic voltage control,the module integrates multiple protective layers.It includes a V/Hz(Volts per Hertz)limiter to prevent transformer and generator core saturation,along with under-excitation and over-excitation limiters to protect the generator from loss of synchronism and rotor overheating,respectively.This built-in protection enhances overall system resilience.

Innovation Point 3:Seamless System Integration and Diagnostics.​The ABB UFC718AE01 HIEE300936R0101​is designed for easy integration into ABB’s UNITROL®family of excitation systems.It features comprehensive metering and diagnostic capabilities,providing real-time data on field voltage,field current,reactive power,and internal status.This visibility allows for predictive maintenance and rapid troubleshooting,minimizing downtime.

Application Cases and Industry Value

Case 1:Industrial Co-Generation Plant Retrofit

A large chemical plant with a co-generation facility was facing instability issues when large motor loads started,causing voltage sags that affected sensitive process equipment.The existing analog AVR could not respond quickly or precisely enough.Retrofitting the system with the ABB UFC718AE01 HIEE300936R0101​provided a transformative solution.The digital controller’s fast processing and tunable PID loops allowed for a much more robust response to load transients.The result was the elimination of process upsets due to voltage dips,improved power quality for the entire plant,and a more stable export of electricity to the local grid.

Case 2:Peaking Power Plant Grid Support

A gas turbine peaking plant was required to provide rapid reactive power(VAR)support to the local transmission grid during periods of high demand.The ABB UFC718AE01 HIEE300936R0101​was configured to operate in power factor control mode,automatically adjusting the generator’s excitation to maintain a set power factor regardless of active power output.This capability allowed the plant to fulfill its grid contract obligations precisely,providing essential voltage support to the network and unlocking additional revenue streams for the plant owner.

Related Product Combination Solutions

ABB UFC721BE01:A thyristor bridge controller,which works in tandem with the ABB UFC718AE01 HIEE300936R0101​to fire the power thyristors that control the generator’s field current.

ABB UNL02861V1:A power thyristor module,acting as the final power amplification stage that is controlled by the UFC718AE01​to supply the DC field current to the generator rotor.

ABB PFTL101A 1.0KN:A measurement and protection device,often used alongside the UFC718AE01​to provide redundant protection for the generator and turbine.

ABB SACE Emax 2:A low-voltage circuit breaker that can be equipped with a communication module to interface with the excitation system for integrated protection and control.

ABB CI867:An Ethernet communication module that can be integrated to connect the UFC718AE01​to a plant DCS(e.g.,ABB Ability™System 800xA)for centralized monitoring and control.

ABB 3BSE042241R1:A power supply module for the UNITROL®cabinet,providing clean and reliable power for the sensitive control electronics of the UFC718AE01.

Installation,Maintenance,and Full-Cycle Support

Installing or replacing the ABB UFC718AE01 HIEE300936R0101​module requires a systematic approach.The module is typically mounted on a DIN rail within the UNITROL®excitation cubicle.Critical steps include ensuring all control power is disconnected,carefully routing and connecting the generator VT(Voltage Transformer)and CT(Current Transformer)wiring to the correct terminals,and verifying all communication and control cabling.Proper grounding and shielding are paramount to prevent noise from affecting the sensitive voltage and current measurements.

Routine maintenance for the ABB UFC718AE01 HIEE300936R0101​is primarily focused on its operating environment,ensuring the excitation cubicle is clean,cool,and dry.The module itself provides extensive diagnostic data through its local interface or communication link,allowing for condition-based monitoring.Key parameters to track include heat sink temperature and the status of internal power supplies.In the event of a fault,the module logs detailed error codes that greatly simplify troubleshooting,guiding technicians to the root cause,whether in the controller itself,the external power circuit,or the generator sensing inputs.

We provide comprehensive full-cycle support for the ABB UFC718AE01 HIEE300936R0101,from initial system integration and configuration support to 24/7 technical troubleshooting and spare part provision.Our commitment includes supplying 100%genuine,factory-tested modules with full traceability.We ensure you have access to the latest firmware,detailed technical documentation,and configuration tools to maintain and optimize your excitation system’s performance throughout its entire operational life.

Contact us for a customized solution and to ensure your ABB UFC718AE01 HIEE300936R0101​excitation controller is perfectly tuned for your generator’s specific requirements.

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