ABB UNITROL 1020 Automatic Voltage Regulator – Functional Overview
1. Core Functions
Voltage Regulation: Automatically adjusts excitation current to maintain stable generator output voltage under varying load conditions.
Protection Mechanisms: Integrates overvoltage, undervoltage, and overcurrent safeguards with fault logging capabilities.
Parallel Operation Support: Enables synchronized control of multiple generators for load sharing and grid stability.
2. Key Features
PID Control Algorithm: Ensures precise voltage adjustments with minimal oscillations.
Modular I/O Design: Hot-swappable modules (e.g., UNS0119A-Z) for flexible system expansion.
Multi-Protocol Communication: Supports Modbus, Ethernet, and CAN for seamless integration with SCADA/DCS.
3. Applications
Power Generation: Excitation control for hydro/thermal turbines in power plants.
Industrial Grids: Voltage stabilization in manufacturing facilities and microgrids.
4. Technical Specifications
Operating Range: -40°C to +80°C with IP-rated enclosures for harsh environments.
Response Time: <20ms for dynamic load changes.
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