Description

UNITROL 1020 is the core product of ABB’s UNITROL 1000 series, positioned as a compact digital automatic voltage regulator (AVR). It is designed for small to medium-sized synchronous generators and industrial equipment. Leveraging advanced microprocessor technology and IGBT semiconductor devices, it achieves high-precision voltage control and stable operation, and is widely used in power, industrial, and marine applications. The following is detailed product information:

Core Product Positioning and Design Concept

1. Product Type: Digital Automatic Voltage Regulator (AVR) with integrated excitation controller functionality. Its core role is to control the excitation current of a synchronous generator, stabilize the generator terminal voltage, and manage reactive power.

2. Design Features: Combines a compact structure with industrial-grade durability, suitable for harsh environments (wide temperature range, vibration resistance), compliant with international standards such as CE, CSA, DNV, and UL, ensuring high reliability.

3. Technical Foundation: Based on a 32-bit RISC processor, integrates advanced digital control algorithms, supports modular expansion and flexible configuration.

Core Features

1. High-Precision Control Capabilities:Supports Automatic Voltage Regulation (AVR), Power Factor Control (PF), Reactive Power Control (Var), and Manual Excitation Control, adapting to various operating conditions.Built-in automatic synchronization enhances system response speed and grid connection accuracy; dual-channel design allows parallel generator load sharing.Adaptive PID control automatically optimizes parameters according to generator operating status, ensuring dynamic regulation performance.

2. Comprehensive Safety Protection:Integrated protections for over-excitation, under-excitation, over-voltage, under-voltage, over-current, and loss of excitation to prevent damage to generators and excitation systems.Equipped with rotating diode monitoring to detect potential failures in critical components in real time.

3. Convenient Operation, Maintenance, and Data Management:Supports data and event logging; with ABB CMT 1000 configuration software, functionalities such as parameter adjustment, trend analysis, and log downloading are available.Supports SNTP time synchronization to ensure accurate timestamps for logs and alarms; remote monitoring and control reduce on-site maintenance costs.

Application Fields:

1. Power Industry: Voltage regulation and reactive power management of synchronous generators (hydro, thermal, gas turbine generators) in hydropower/thermal power plants and industrial self-operated power stations.

2. Industrial Sector: Voltage stability control for motors, fans, pumps, compressors, and other equipment in industries such as metallurgy, chemical, and water treatment.3.

Ship and New Energy: Voltage control of ship generator sets; voltage stabilization and energy conversion efficiency optimization in wind and solar power generation systems.

4. Other Scenarios: DC regulated power supply in laboratories, hospitals, schools, and other locations (for certain models).