Name: ABB UNITROL 1010 3BHE035301R1002 | UNITROL 1010 Series Excitation Controller for Synchronous Generators - XINYEDA
Brand: ABB

Description

UNITROL 1010 3BHE035301R1002: Product Overview

This component is a generator excitation control system controller from ABB’s UNITROL 1010 series, designed for synchronous generators in power plants and industrial facilities. Its position in an automation system is as the core control unit of the excitation system, typically mounted in the generator control panel or excitation cabinet. It interfaces with generator voltage/current transformers (VTs/CTs), the prime mover governor, and plant DCS/SCADA systems to regulate excitation current, thereby maintaining generator terminal voltage, controlling reactive power output, and enhancing power system stability.

The core functionality involves processing analog signals (generator voltage, current, field current) and digital inputs (breaker status, protection signals) to execute excitation control algorithms. It implements automatic voltage regulation (AVR) for steady-state voltage control, power system stabilization (PSS) for dynamic stability, and manual/automatic modes for operational flexibility. The controller also handles communication with external systems via protocols like Modbus RTU, IEC 61850, or DNP3, enabling remote monitoring and parameter adjustment.

This controller belongs to the UNITROL 1010 product family, a platform recognized for its precision, reliability, and compliance with power system standards (IEEE C37.2, IEC 60034). Benefits include high-accuracy voltage regulation (±0.25% steady-state error), modular hardware design for easy maintenance, and adaptive control algorithms that optimize performance under varying grid conditions. The series supports integration with ABB’s EX2100 or EX3000 excitation systems, providing scalable solutions for generators from small industrial units to large utility-scale plants.

ABB UNITROL 1010 3BHE035301R1002

UNITROL 1010 3BHE035301R1002: Technical Specifications

Model Number: UNITROL 1010 3BHE035301R1002
Manufacturer: ABB
Product Type: Generator Excitation Control System Controller
Series: UNITROL 1010
Generator Compatibility: Synchronous generators, 1-1000 MW capacity
Control Functions: Automatic Voltage Regulator (AVR), Power System Stabilizer (PSS), Manual Excitation Mode
Input Signals: Generator voltage (0-150V AC), current (0-5A AC), field current (0-10A DC)
Output Signals: Field current (0-10A DC, adjustable), digital trip/alarm outputs
Communication Protocols: Modbus RTU, IEC 61850 (optional), DNP3 (optional)
Protection Features: Overvoltage, undervoltage, overcurrent, field circuit fault detection
Operating Temperature: 0°C to +55°C
Storage Temperature: -40°C to +70°C
Dimensions: 483mm (H) x 177mm (W) x 300mm (D) (19-inch rack mount)
Weight: 12 kg
Certifications: CE, UL, IEEE C37.2, IEC 60034

Core Features & Customer Value

Precision voltage regulation ensures grid compliance. The controller’s AVR function maintains generator terminal voltage within ±0.25% of setpoint, critical for stable power delivery to industrial facilities or public grids. For utilities, this minimizes voltage fluctuations that could damage downstream equipment; for industrial plants, it supports consistent motor and drive performance.

Integrated power system stabilizer (PSS) enhances dynamic stability. By counteracting oscillations caused by grid disturbances (e.g., short circuits, load changes), PSS prevents generator instability and tripping. For power plant operators, this reduces outage risks and improves grid resilience during peak demand or fault conditions.

Modular design simplifies maintenance and upgrades. The controller’s plug-and-play components (e.g., I/O boards, communication modules) allow targeted replacement without overhauling the entire system. For maintenance teams, this reduces downtime during repairs and lowers spare parts inventory costs.

Flexible communication interfaces streamline integration. Support for Modbus RTU, IEC 61850, and DNP3 enables connection to plant DCS, SCADA, or energy management systems (EMS). Engineers can remotely adjust voltage setpoints, monitor field current, and log performance data, reducing the need for on-site interventions.

Adaptive control algorithms optimize performance across operating regimes. The controller adjusts excitation parameters based on generator load, grid strength, and ambient conditions, ensuring efficient reactive power compensation. For plant owners, this maximizes generator efficiency and extends insulation life by avoiding over-excitation.

ABB UNITROL 1010 3BHE035301R1002

Typical Applications

In a coal-fired power plant, this controller regulates the excitation of a 500MW synchronous generator. It maintains terminal voltage at 20kV during baseload operation, activates PSS during grid frequency dips, and communicates with the plant DCS via IEC 61850 to log reactive power output for billing.

For a wind farm’s synchronous condenser, the controller manages excitation to provide dynamic voltage support to the grid. It adjusts field current in real-time based on grid voltage fluctuations, enhancing stability during intermittent wind generation.

In an industrial cogeneration plant, the controller stabilizes voltage for a 50MW gas turbine generator. It switches between automatic and manual modes during startup/shutdown, and interfaces with the plant’s SCADA system via Modbus RTU to trigger alarms on overvoltage.

At a hydroelectric facility, the controller regulates a 200MW generator’s excitation to balance reactive power with the regional grid. Its PSS function dampens oscillations caused by rapid load changes in the downstream aluminum smelter.

ABB UNITROL 1010 3BHE035301R1002 | UNITROL 1010 Series Excitation Controller for Synchronous Generators

ABB UNITROL 1010 3BHE035301R1002 | UNITROL 1010 Series Excitation Controller for Synchronous Generators

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