Description

The DEIF LSU-112DG is a sophisticated Load Sharing Unit (LSU) module integral to DEIF’s Genius platform, designed specifically for the parallel operation and synchronization of multiple generator sets. This module serves as the brain for managing the active power (kW) load distribution among generators operating in parallel, whether on a marine vessel or in a land-based power plant. The core function of the DEIF LSU-112DG is to ensure that all connected generators share the total electrical load proportionally to their capacity, preventing overloading on any single unit and maintaining system frequency stability. Its advanced control algorithms enable seamless generator synchronization, smooth load transfer, and stable operation under varying load conditions.

As a key component within a comprehensive power management system (PMS), the DEIF LSU-112DG plays a pivotal role in enhancing the efficiency, reliability, and fuel economy of a multi-generator setup. It receives load and speed signals from each generator and outputs precise control signals to the individual generator governors, creating a closed-loop control system that is both responsive and robust. The deployment of the DEIF LSU-112DG is critical for applications requiring uninterrupted power supply, as it facilitates automatic start/stop sequences of generator sets based on load demand, thereby optimizing the entire power generation system’s performance and lifespan. Its reliability makes it a cornerstone for critical power systems where failure is not an option.

100031593.10 LSU-112DG DEIF

Technical Specifications

Main Features and Advantages

The DEIF LSU-112DG offers a suite of advanced features that ensure precise and reliable power management. Its primary advantage is the implementation of robust isochronous load sharing, which guarantees that all generators in a parallel system run at the same frequency while accurately sharing the active load according to their predefined ratings. This eliminates the risk of reverse power and protects generators from potential damage.

High Precision Synchronization: The module provides fully automatic synchronization, measuring voltage, frequency, and phase angle between the generator and the busbar. The DEIF LSU-112DG then issues commands to the generator’s Automatic Voltage Regulator (AVR) and engine governor to achieve perfect synchronization, minimizing mechanical stress on the generator sets during the connection process.

Seamless System Integration: Designed for the Genius platform, the DEIF LSU-112DG integrates flawlessly with other DEIF modules like generator control units (GCUs) and power management system (PMS) controllers via a high-speed CAN bus. This plug-and-play architecture significantly simplifies wiring, reduces installation time, and enhances overall system diagnostics and reliability. The modularity of the system, centered around components like the DEIF LSU-112DG, allows for scalable and flexible power plant designs.

Robust and Marine-Proven Design: Built to withstand the challenging conditions of marine and industrial environments, the DEIF LSU-112DG operates reliably across a wide temperature range and is resistant to vibration and electrical noise. Its proven track record in critical applications makes it the go-to choice for engineers who prioritize operational uptime and system safety.

100031593.10 LSU-112DG DEIF

Application Field

The DEIF LSU-112DG is predominantly applied in scenarios where multiple generator sets must operate in parallel to meet a common load demand. In the maritime industry, it is a fundamental component for shipboard power plants, managing the generators to ensure a stable and continuous supply of electricity for propulsion, navigation, and hotel loads, regardless of sudden load changes.

For land-based applications, the DEIF LSU-112DG is essential in standby and prime power generation systems for critical facilities such as hospitals, data centers, and industrial plants. It enables these facilities to optimize generator usage, improve fuel efficiency, and reduce engine wear by ensuring an even load distribution. Furthermore, the module is used in hybrid power systems and microgrids that integrate generators with renewable energy sources, where the DEIF LSU-112DG helps maintain grid stability and power quality. Its versatility also extends to offshore platforms and mining operations, where reliable parallel operation of gensets is crucial for safety and productivity.

Related Products

DEIF PSU-112 Single Genset Controller: A core controller for a single generator set, which works in conjunction with the LSU-112DG in a multi-genset system.

DEIF MCU-120 Multi-Control Unit: A central PMS controller that can oversee the operation of multiple LSU-112DG modules and other system components for complex power plants.

DEIF AGC-4 Automatic Genset Controller: Provides comprehensive control and protection for a single generator, often used alongside synchronization modules.

DEIF RES-3 Reverse Power Relay: A protection relay that works with the system to disconnect a generator in case of reverse power, a critical safety function.

DEIF ISM-1 Instrumentation & Switch Module: Provides user interface and control switches for systems incorporating the LSU-112DG.

DEIF GENIUS GPI-1 & GPO-1 Modules: General Purpose Input and Output modules for expanding the I/O capabilities of a Genius system.