Product Overview
In the operation and control of synchronous generators,the excitation system plays a crucial role in maintaining stable terminal voltage,regulating reactive power,and enhancing system stability.The ABB 1TGB302003R0003 control board,as the intelligent control core of the UNITROL 1000 digital excitation system,embodies ABB’s decades of technological accumulation in the field of power automation.This board is designed based on a fully digital control architecture,replacing traditional analog regulators,and achieving more precise and faster excitation control through a high-performance 32-bit DSP processor.
The core function of the 1TGB302003R0003 is to calculate generator operating parameters in real time and precisely control the rotor magnetic field current through a thyristor rectifier bridge.Unlike conventional PLCs or DCSs,this module is optimized for the high-speed control requirements of power systems,with a control cycle in the millisecond range,enabling rapid response to grid fluctuations.In the UNITROL 1000 system,this control card typically uses a dual-redundant configuration;when the main control channel fails,the backup channel can achieve seamless switching,greatly improving the availability of the generator set.Its built-in multiple control modes(such as automatic voltage regulation AVR,reactive power regulation,power factor regulation)and comprehensive protection functions(such as over-excitation limit,under-excitation limit,V/Hz protection)enable it to adapt to various application scenarios,from large hydropower plants to thermal power plants.Choosing ABB 1TGB302003R0003 means equipping your generator set with a reliable and intelligent”brain,”ensuring power grid supply quality and system stability.Technical Specifications
Product Model:1TGB302003R0003
Manufacturer:ABB
Product Type:Excitation System Control Board
System:UNITROL 1000 Excitation System
Operating Voltage:24 VDC(from internal system power supply)
Processor:32-bit Digital Signal Processor(DSP)
Control Cycle:≤1 ms
Analog Inputs:Multiple isolated analog inputs(terminal voltage,current,etc.)
Digital Inputs:Switching state monitoring inputs
Control Outputs:Pulse signals(driving thyristor rectifier bridge)
Communication Interface:Supports fieldbus(e.g.,Profibus DP)and Ethernet
Protection Functions:Over-excitation limit,under-excitation limit,V/Hz limit,erroneous forced excitation protection
Operating Temperature:0°C to+60°C
Storage Temperature:-40°C to+85°C
Humidity Range:5%to 95%(non-condensing)
Certification Standards:IEC 60146,IEC 61000-6-2,IEC 61000-6-4
Main Features and Advantages
The core advantage of the ABB 1TGB302003R0003 lies in its deep integration of professionalism in generator excitation control,high system reliability,and ease of maintenance,providing critical assurance for power generation.
Its most significant value is its high-precision control performance.Based on the powerful computing power of the 32-bit DSP,this control card can implement complex control algorithms,such as Power System Stabilizer(PSS)functionality,effectively improving the dynamic stability of the power grid by introducing additional signals to suppress low-frequency oscillations.Its advanced self-diagnostic function continuously monitors key parameters,such as the health status of the measurement circuit and the power supply voltage status,and can record fault waveforms,providing important basis for maintenance personnel to analyze the cause of faults.
Secondly,the redundant design and modular architecture of this module ensure extremely high system availability.The UNITROL 1000 system allows the configuration of two completely independent 1TGB302003R0003 control cards,forming a hot standby system.When the main control card fails during operation,the system can automatically and seamlessly switch to the backup card,ensuring that the generator does not shut down due to excitation system problems.Its modular design allows for online replacement of the control card,significantly reducing maintenance time.
User-friendly interface:Parameters can be easily viewed,settings modified,and tests performed via the local HMI or debugging software.
Powerful communication capabilities:Supports various standard industrial communication protocols,facilitating seamless integration into power plant monitoring and data acquisition systems(SCADA)or distributed control systems(DCS).
Comprehensive protection functions:Built-in excitation current limiter,underexcitation limiter,and other protection functions ensure that the generator operates within a safe range.
Application Areas
The 1TGB302003R0003 focuses on the excitation control system of synchronous generators and is a key automation device for various power plants.
In large hydropower plants,this control card is the core of the excitation system for hydro-generator units,maintaining stable terminal voltage by regulating the excitation current and quickly responding to grid dispatch commands,participating in automatic generation control(AGC)and automatic voltage control(AVC)of the power grid.In thermal power plants(including coal-fired and gas-fired units),it ensures stable operation of the generator under various load conditions,especially addressing the strong excitation requirements during grid faults and supporting grid voltage recovery.In the conventional island generator units of nuclear power plants,its high reliability meets the stringent standards of nuclear power plants.Furthermore,it is widely used in captive power plants of large industrial enterprises and pumped storage power plants.
Typical application scenarios include:
Generator excitation systems in large hydropower and thermal power plants
Conventional island generator units in nuclear power plants
Pumped storage power plants
Excitation control of synchronous motors for large industrial drives
Upgrade and retrofit projects for existing excitation systems
Integration and Configuration Key Points
Successfully integrating the 1TGB302003R0003 control card into the excitation system and ensuring its stable operation requires attention to key aspects such as hardware installation,parameter setting,and system testing.
In terms of hardware integration,the control card must be correctly inserted into the designated slot of the UNITROL 1000 chassis,ensuring reliable contact of the backplane connector.The wiring of external measurement circuits(such as generator terminal voltage PT and stator current CT)must be correct and secure,with correct polarity.Otherwise,the control card will perform calculations based on incorrect measurement values,leading to control instability.The DC power supply for the control card must be stable and clean to prevent abnormal resets of the control card due to power quality issues.
Software configuration and parameter tuning are crucial for optimal performance.Using ABB’s dedicated commissioning tools(such as the Diagnostic Tool for UNITROL 1000),engineers need to configure system parameters(such as generator nameplate parameters,PT/CT ratios),set the control mode(AVR/FCR/PFR)and its switching logic,and tune the PID controller parameters.Protection settings(such as over-excitation,under-excitation,and V/Hz limits)must be accurately calculated and set according to the generator’s capability curve and grid requirements.After initial configuration,no-load tests(checking voltage setting range and steady-state regulation)and load tests(checking reactive power regulation and PSS effect)must be performed to ensure all functions are working correctly.
Lifecycle and Procurement Recommendations
From a product lifecycle analysis perspective,the ABB 1TGB302003R0003 and its associated UNITROL 1000 system hold a significant position in the global excitation market,boasting mature and stable technology and being in its mature phase.Although ABB will launch newer generations of excitation products,the UNITROL 1000,due to its excellent reliability and extensive field application base,will continue to receive ongoing technical support and new product supply from ABB in the foreseeable future.
For new power generation projects,where higher integration and networking capabilities are desired,ABB’s latest platform can be evaluated.However,for the maintenance,spare parts inventory,and technical upgrades of existing UNITROL 1000 systems,the 1TGB302003R0003 is undoubtedly one of the most critical spare parts.Its failure will directly lead to generator excitation control failure,with serious consequences.Given its criticality,it is recommended that power plants maintain at least one spare control card depending on the excitation system configuration(whether redundant or not).When purchasing,the firmware version should be confirmed to be compatible with the existing system.
Our Product Guarantee:We(Shenzhen Changxin)understand the importance of excitation systems to grid safety.Every 1TGB302003R0003 control card we supply is sourced from reliable channels,ensuring it is a genuine original product.Before delivery,each control card undergoes rigorous functional verification on our testing platform,including appearance inspection,power adaptability testing,communication interface testing,and simulation of basic control logic,ensuring its core functions are intact.We provide a 12-month warranty for all products and offer professional technical support to assist you with model confirmation.We are committed to being a reliable partner for the stable operation of your critical power assets.
选择深圳长欣，选择放心，售后无忧 大量现货，当天顺丰发货！！！
