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HYBRID GENSET SYSTEM FOR IMPULSIVE POWER DEMAND PLANT

IP.com Disclosure Number: IPCOM000234865D
Publication Date: 2014-Feb-11
Document File: 6 page(s) / 127K

Publishing Venue

The IP.com Prior Art Database

Abstract

Described herein is a technique to support plants such as oil drill rigs during load variations. The technique includes using a hybrid genset system to support the oil drill rig. The hybrid system includes a central controller to coordinate and optimize the system during load intake or load rejection. The hybrid system is a combination of gensets. The combination includes different type of gas gensets with one embodiment including a lean burn gas engine combined with a rich burn gas engine. The lean burn engines are designed for efficiency and not for driving varying load. The rich burn gas engines are designed to support varying load and not optimal in fuel consumption. The main aim of the hybrid system is to minimize gas fuel consumption while providing sufficient power. In order to meet this objective, different engines are invoked under various working conditions. In normal operation with minor load variation, the engine with maximum efficiency (lean burn engine) is utilized and current load level decides the number of engines to be utilized. During sudden load variations, the fast responding engine (rich burn engine) is automatically added to ride through the load change.

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HYBRID GENSET SYSTEM FOR IMPULSIVE POWER DEMAND PLANT

BRIEF ABSTRACT

Described herein is a technique to support plants such as oil drill rigs during load variations. The technique includes using a hybrid genset system to support the oil drill rig. The hybrid system includes a central controller to coordinate and optimize the system during load intake or load rejection. The hybrid system is a combination of gensets. The combination includes different type of gas gensets with one embodiment including a lean burn gas engine combined with a rich burn gas engine. The lean burn engines are designed for efficiency and not for driving varying load. The rich burn gas engines are designed to support varying load and not optimal in fuel consumption.  The main aim of the hybrid system is to minimize gas fuel consumption while providing sufficient power. In order to meet this objective, different engines are invoked under various working conditions. In normal operation with minor load variation, the engine with maximum efficiency (lean burn engine) is utilized and current load level decides the number of engines to be utilized. During sudden load variations, the fast responding engine (rich burn engine) is automatically added to ride through the load change.

KEYWORDS

Oil drill rigs, Hybrid system, Diesel engine.


DETAILED DESCRIPTION

Diesel engine based gensets are utilized to power an oil drill rig. Diesel fuels are expensive and require transportation. Usually, an oil field generates gas while producing oil. Gases produced are utilized to drive the drill system through gas engines which are typically superior in terms of efficiency and emissions but slow in responding load demand variations.

            It would be desirable to have a technique that eliminates diesel fuel and provides sufficient power to the oil drill rig system.

            To address this goal, in one embodiment, a hybrid genset system is used to support the oil drill rig. The hybrid system includes a central controller to coordinate and optimize the system. The central controller coordinates and optimizes the system during load intake or rejection. The hybrid system is a combination of gensets. The combination includes different type of gas gensets, which in one embodiment includes a lean burn gas engine combined with a rich burn gas engine. The lean burn gas engines are designed for efficiency. The rich burn gas engines are designed to support varying load and are not optimal in fuel consumption. The different engines are invoked under various working conditions. In normal operation with minor load variations, the engine with maximum efficiency is utilized and current load level decides the number of engines to be utilized. During sudden load variations, the fast responding engine (the rich burn engine) is automa...