DEIF DELOMATIC 400 Gas Engine Unit Control System

DEIF DELOMATIC 400 Gas Engine Unit Control System

In the field of modern distributed energy and cogeneration, the requirements for generator control systems are far beyond basic start stop and protection. Faced with increasingly complex gas engine technology, strict emission regulations, and the demand for unmanned operation and maintenance, a comprehensive solution that integrates advanced control algorithms, precise measurement protection, and remote communication capabilities has become an inevitable choice. The DELOMATIC 400 launched by DEIF is designed specifically for this purpose, as a modular process controller for power plants driven by gas engines. This article will delve into the architecture, core functions, technical specifications, and unique application value of the system in the field of gas energy based on its official technical data manual.

Chapter 1 System Application and Hardware Overview

1.1 Core positioning and application scenarios

DELOMATIC 400 is not a universal PLC, but a process controller deeply customized for gas/hydro power plants. Its design philosophy revolves closely around four core keywords: reliability, robustness, flexibility, and remote accessibility. The system has been optimized specifically for the challenges of harsh environments and remote areas, such as offshore platforms and land-based distributed power stations, and has strong environmental adaptability.

The foundation of this controller is derived from DEIF's mature generator control system, which has been applied to thousands of ships and land-based power plants for over 25 years. This background endows DELOMATIC 400 with inherent high industrial standards and anti-interference capabilities. The system is designed specifically for unmanned operation, and its human-machine interface not only provides comprehensive information for local users, but also supports efficient remote diagnosis and rapid recovery operations.

In terms of system integration, DELOMATIC 400 demonstrates extremely high openness and can seamlessly communicate with external specialized devices, such as:

ignition system

Detonation suppression system

Gas Mixing Control System

Other third-party fieldbus devices

This enables it to serve as a central control unit, coordinating the efficient and safe operation of the entire engine generator set.

1.2 Standard Function Collection

The DELOMATIC 400 integrates numerous complex functions into one, greatly reducing the complexity and cost of system integration. Its standard functions cover the complete chain from measurement, protection to advanced strategy control:

Comprehensive measurement capability:

Electrical parameters: three-phase generator/grid voltage, three-phase current, single-phase/total active/reactive power, active/reactive energy count.

Mechanical and process parameters: operating hours, number of circuit breaker operations, all critical engine temperatures and pressures, and other measured values of the power plant.

Core protection and control functions:

Grid connection and generator protection: including comprehensive electrical protection such as vector tripping, frequency change rate, over/under voltage, over/under frequency, current asymmetry, reverse power, low power, overcurrent, thermal overload, over/under excitation, overspeed, etc. Integrated grid protection function to meet grid access standards.

Security and Logic Control: Supports hardware security chain and reset function; Perform disconnect proof monitoring on the position of the circuit breaker; Configure emergency shutdown; Provide configurable universal fault inputs; Manage the pre/post operation of auxiliary equipment; Control the opening and closing of electric circuit breakers.

Power and synchronization control: built-in analog power setpoint; Capable of voltage regulation and power factor control; Integrated automatic synchronizer with voltage matching and timeout monitoring; Built in electronic governor with acceleration control function, eliminating the need for an external governor unit; Smooth start stop power ramp function.

1.3 Special functions for gas engines

Different from diesel generator sets, DELOMATIC 400 integrates a large number of dedicated control and monitoring logic for gas engine characteristics:

Engine status monitoring:

Lubricating oil pressure/temperature monitoring

Coolant temperature monitoring

Gas pipeline pressure/temperature monitoring

Gas leak detection

Gas valve opening time monitoring (to ensure safe ignition)

Monitoring of exhaust temperature after turbocharger

Exhaust back pressure monitoring

Water level limiter for coolant, emergency cooler, and heating circuit

Monitoring the execution time of the air door baffle

Exhaust bypass valve execution time monitoring

Starter gear to gear monitoring (to prevent damage to the starter gear)

External oil level monitoring (low fresh oil level, high waste oil level)

Advanced Process Control Strategy:

Fully automatic engine start stop sequence

Warm up control

Engine Rear Run Cooling Control

Automatic load shedding function based on multiple parameters: adjust output according to intercooler temperature, throttle position, ambient temperature, exhaust temperature, etc., to prevent the engine from entering dangerous operating conditions.