ABB UNITRAL1010 3BHE035301R1002 UNS 0121A-Z, V1 high-performance excitation controller

ABB UNITRAL1010 3BHE035301R1002 UNS 0121A-Z, V1 high-performance excitation controller

Product Overview

The ABB UNITRAL1010 excitation controller (model: 3BHE035301R1002, software version: UNS 0121A-Z, V1) is a high-performance core control equipment developed by ABB Group for synchronous generator excitation systems. This product integrates ABB's cutting-edge technology in the field of power control, with high reliability, precise control capability, and flexible adaptability as its core advantages. It is widely used in various scenarios such as thermal power generation, hydropower generation, new energy generation, and industrial self owned power plants, providing key guarantees for the stable operation of synchronous generators and ensuring the quality of power output from the power generation system and the safety and stability of the power grid.

As one of the classic models of the UNITOL series, the 1010 controller has optimized its software and hardware to meet the needs of modern power systems, based on the mature control algorithms of the inherited series products. It has shown outstanding performance in digital control, fault diagnosis, and intelligent operation and maintenance, and can perfectly adapt to synchronous generators of different capacity levels, meeting the excitation control requirements from small and medium-sized units to large main units.

Core advantages and performance characteristics

1. Accurate and stable excitation control capability

The controller is equipped with ABB's patented PID regulation algorithm and adaptive excitation control strategy, which can accurately collect key parameters such as terminal voltage, stator current, and rotor current of the generator in real time, and quickly respond to grid voltage fluctuations and load changes. During steady-state operation, the voltage deviation at the generator end can be controlled within ± 0.5%, effectively suppressing voltage fluctuations and improving power quality; During transient processes such as power grid faults and sudden load changes, the excitation current can be quickly adjusted to provide sufficient excitation support for the generator, improve the transient stability and anti-interference ability of the unit, and avoid unit tripping or power grid accidents caused by excitation loss of control.

2. High reliability and redundant design

At the hardware level, industrial grade high stability components are used, and the core control unit has undergone rigorous environmental adaptability testing, capable of stable operation in industrial scenarios with a wide temperature range of -20 ℃~60 ℃, high dust, and strong electromagnetic interference. At the same time, the product supports dual redundancy configuration options, and the main and backup controllers can achieve disturbance free switching with a switching time of less than 10ms, ensuring that the excitation system can still work normally in the event of a single controller failure, greatly improving the availability of the excitation system and meeting the strict requirements of "zero unplanned shutdown" in power plants.

3. Flexible digitalization and communication capabilities

The controller is equipped with a high-performance microprocessor to achieve fully digital control, replacing the complex hardware circuits of traditional analog controllers, reducing fault points, and improving control accuracy and debugging convenience. In terms of communication, it supports mainstream industrial communication protocols such as MODBUS, PROFINET, IEC 61850, etc., and can seamlessly integrate into the distributed control system (DCS) or energy management system (EMS) of power plants to achieve real-time uploading of excitation system operating parameters, remote monitoring, and issuance of control instructions, providing data support for digital operation and intelligent management of power plants.

4. Comprehensive fault diagnosis and protection functions

The UNS 0121A-Z, V1 version software integrates a comprehensive fault diagnosis module, which can monitor key components of the excitation system such as excitation transformers, power rectifier bridges, rotor circuits, sensors, etc. in real time. It can accurately identify dozens of fault types such as overvoltage, overcurrent, excitation circuit disconnection, sensor faults, etc., and provide timely feedback through sound and light alarms, fault code display, etc. At the same time, it automatically executes corresponding protection strategies (such as demagnetization, shutdown protection, etc.) to avoid the expansion of faults. In addition, the controller has a fault recording function, which can store the latest 100 fault information and operational data before and after the fault occurred, providing convenience for fault investigation and cause analysis.

5. Convenient debugging and maintenance

The product is equipped with a human-machine interaction unit (HMI) with a Chinese operating interface, which is simple and intuitive to operate. Staff can complete parameter settings, status monitoring, fault queries, and other operations through buttons or touch screens. At the same time, ABB provides dedicated debugging software (such as UNITOL Toolbox), which can be connected to the controller through USB or Ethernet interface to achieve batch configuration of parameters, firmware upgrade, control logic simulation and other functions, greatly reducing debugging time. In addition, the modular design of the controller makes component replacement more convenient, reducing maintenance costs and downtime.

Key technical parameters

Model information

Controller model: 3BHE035301R1002; Software version: UNS 0121A-Z, V1

Unique identification of hardware and software to ensure product compatibility

input power

DC: 24V DC ± 20%; Communication: 110V/220V AC ± 15%

Support wide voltage input and adapt to different power plant power configurations

Analog input

8 standard current inputs (4~20mA); 6-way standard voltage input (0~10V)

Used to collect various operating parameters of generators and excitation systems

Switching input/output

16 channel switch input; 12 channel switch output (relay output)

Implement external signal acquisition and control command output

control accuracy

Voltage regulation accuracy: ± 0.5%; Current regulation accuracy: ± 1%

Ensure the quality of electrical energy and the stability of excitation system operation

response time

Step response time ≤ 100ms

Quickly respond to changes in the power grid and load

communication interface

2 Ethernet interfaces; 1 RS485 interface

Supports multiple communication protocols for easy access to power plant control systems

working environment

Temperature: -20 ℃~60 ℃; Humidity: 10%~90% (no condensation); Protection level: IP20 (installed inside the cabinet)

Adapt to harsh industrial environments

Typical application scenarios

1. In the field of thermal power generation: Suitable for 300MW~1000MW level steam turbine generators, providing stable excitation for the unit under starting and stopping, load changing, load shedding and other working conditions, ensuring coordinated operation between the unit and the power grid, and improving power generation efficiency.

2. Hydroelectric power generation field: In response to the frequent load fluctuations of hydroelectric generators, precise excitation control is used to suppress unit oscillations and ensure stable operation under different water heads and loads, especially suitable for large hydropower stations and pumped storage power stations.

3. In the field of new energy power generation: In the excitation system of synchronous generators supporting wind and photovoltaic power, smooth grid connection and voltage regulation of generators are achieved to improve the grid compatibility and power quality of new energy power generation systems.

4. Industrial self owned power plants: Provide excitation control for self owned power plant generators in industries such as steel, chemical, and cement, ensuring stable voltage in the internal power grid of the enterprise, meeting the strict requirements of production equipment for power quality, and avoiding the impact of voltage fluctuations on production.

5. Grid peak shaving and backup power supply: In peak shaving or backup power supply systems such as gas turbine generators and diesel generators, quick response to start-up instructions provides emergency power support for the grid and improves the reliability of power supply.