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GE Alstom L54E1402AY00 Control Unit
GE Alstom L54E1402AY00
1. Overview
GE Alstom L54E1402AY00 is an excitation control unit specifically designed for large-scale generator sets, especially hydropower generator sets. It is a key core component of the Alstom Microrec series, mainly responsible for regulating and controlling the excitation current of the generator to ensure that the generator can stably output electric power under various load and operating conditions.
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2. Main Technical Parameters
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Parameter
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Specification/Range
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|---|---|
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Power Supply Voltage
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400V/3Ph/50Hz (Typical)
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|
Rated Power
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2.5 kW (Slightly different according to different versions)
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Excitation Range
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10% – 110% (According to unit capacity)
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|
Cooling Method
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Air Cooling + Liquid Cooling (Integrated into the unit’s water cooling system)
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|
Operating Temperature
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-25℃ – 70℃
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|
Control Protocol
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IEC 61850, Modbus, Profibus (Depends on version)
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Protection Level
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IP23 (With cabinet installation)
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3. Product Features
- High Reliability: Adopts modular design, and core components are industrial-grade high-reliability devices, suitable for harsh power station environments.
- Advanced Control Algorithm: Supports multiple excitation control modes (such as static, semi-static, dynamic), which can quickly respond to grid voltage changes.
- High Integration: Integrates rectification, inversion, voltage stabilization and other functions, with small size and low installation space requirements.
- Remote Monitoring: Supports remote data collection and control of SCADA system, and can real-time monitor key parameters such as excitation current and rotor temperature.
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4. Structure and Composition
The system is mainly composed of the following parts:
- Main Control Unit: Responsible for executing the excitation control algorithm and outputting excitation current commands.
- Power Electronic Converter: Converts DC power into DC current required for excitation.
- Communication Interface Module: Provides a communication interface with upper computer or protection device.
- Protection Relays: Built-in protection functions such as overvoltage, overcurrent and loss of excitation.
- Cooling System: Usually integrated with the generator’s cooling system, using cooling water for heat dissipation.
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5. Application Fields
This model of excitation system is widely used in large-scale hydropower stations and thermal power stations:
- Hydropower Generator Sets: Such as generator sets above 600 MW in large hydropower stations like the Three Gorges Left Bank Power Station.
- High-Voltage Generators: Suitable for power stations with high voltage level above 500 kV.
- Power Distribution and Transmission: Used at key nodes that require high-precision voltage control.
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6. Installation and Maintenance
Installation
- Usually installed inside or beside the generator’s Excitation Box.
- The interface adopts a standard card-type design and plug-in connection, without complex wiring.
- The installation location must ensure good heat dissipation conditions, usually connected to the cooling water pipeline.
Maintenance
- Regular Inspection: Including cooling system inspection (no leakage, normal flow), power supply voltage inspection, and wiring tightening.
- Fault Diagnosis: Use HMI (Human-Machine Interface) or SCADA system to monitor excitation current, rotor temperature and alarm information.
- Spare Parts Replacement: Core power electronic components (such as IGBT) are usually equipped with hot-swappable spare parts for quick replacement.
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Company Introduction
We are a high-tech enterprise with years of professional experience in the sales of spare parts for large-scale imported systems (Distributed Control Systems, Programmable Logic Controllers, Redundant Fault-Tolerant Control Systems, Robot Systems) and system integration. Our main brands include ABB, Foxboro, Triconex, Bently Nevada, Ovation, Motorola, Xycom, A-B, Schneider, GE Fanuc, Yaskawa, Woodward and other imported automation system spare parts.
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We have rich experience and professional technical accumulation in the industry, enabling us to provide customers with high-quality products and services. We focus on technological research and development as well as innovation, and have a complete production line and quality control system to ensure the reliability and durability of each product.
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