The Development of the Quick-Start Gas Turbine Standby Generator Set

1980 ◽  
Author(s):  
Y. Fujikawa ◽  
K. Nakanishi ◽  
H. Kanegae ◽  
Y. Sakaki
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Low Cost ◽  
Electrical Power ◽  
Transient Responses ◽  
Power Generator ◽  
Polar Moment ◽  
Power Turbine ◽  
Variable Power ◽  
Industrial Use

A simple, relatively low-cost, two-shaft gas turbine has been developed for industrial use. It is a modification of the two-shaft regenerative vehicular gas turbine that was previously developed and has a variable power turbine nozzle. A standby electric power generator set that is powered by the gas turbine has also been built. Its rated output is 300 ps and it generates 200 kw of electrical power. As it is a two-shaft gas turbine, it requires only 9 seconds to start with a 3.5-kw electric starting motor. While the transient responses, especially in the area of speed changes caused by step load changes, appear to be an inevitable shortcoming, they have been minimized by the reduction of the gasifier rotating unit’s polar moment of inertia and other improvements in the fuel control system and units. Consequently, the use of this generator set for general purposes will not pose any problem.

Intercooled/Recuperated Shipboard Generator Drive Engine

1986 ◽  
Author(s):  
R. G. Mills ◽  
K. W. Karstensen
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Turbines ◽  
Electrical Power ◽  
Specific Fuel Consumption ◽  
Fire Control ◽  
Load Range ◽  
Light Load ◽  
Power Turbine ◽  
Variable Power

Adverse consequences of losing electrical power to complex electronic and fire control equipment, or of the sudden variations of shore power, cause naval combatants to operate two generators most of the time, each at light load where specific fuel consumption of simple-cycle gas turbines is particularly high. The recuperated gas turbine with variable power-turbine nozzles has a much better specific fuel consumption, especially at part load. Herein described is a compact recuperated gas turbine with variable power-turbine nozzles designed for marine and industrial use, suitable with or without intercooling. These features yield a specific fuel consumption that is comparable to marine diesels used for generator drive, and essentially flat across the entire usable load range.

The Design and Implementation of a PLC Based Gas Turbine Controller for a Shipboard Application

2000 ◽  
Author(s):  
Vincent P. Tolotta
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Low Cost ◽  
Flat Panel Display ◽  
Flat Panel ◽  
Loop Control ◽  
Steady State Operation ◽  
Power Turbine ◽  
Wide Range ◽  
Supervisory Control System

A paper will be presented describing the design and development of the Gas Turbine Local Controller replacement used on the Magnetic Minesweeping Gas Turbine Generator (MMGTG) on the US Navy MCM-1 Class of ships. The advent of processor based controllers including PLCs has provided a low cost alternative for control system upgrades when faced with increasing maintenance costs and obsolescence issues of analog and hard relay logic control systems. The replacement controller is a Programmable Logic Controller (PLC) based system linked to a flat panel display and a supervisory control system. A MMGTG during pulsing operations applies a severe load transient cycle to the gas turbine for the fuel control to meet in a stable and safe manner. The algorithms which employ an adaptive Proportional Integral Derivative (PID) loop control structure with internal limiting constraints based on engine state are used to manage these transients, power turbine entry temperature and a wide range of steady state operation. The controller includes logic for alarming, start/stop and automatic shutdown. The design of the hardwired automatic shutdown logic integrated to the PLC will be presented. The control system design will be described in terms of its integration to a supervisory network, local control functionality and shipboard considerations. The Human Machine Interface screens of the flat panel display and their design are also considered.

A Control System for a High-Quality Generating Set Equipped With a Two-Shaft Gas Turbine

1991 ◽  
Vol 113 (2) ◽  
pp. 290-295 ◽  
Author(s):  
H. Kumakura ◽  
T. Matsumura ◽  
E. Tsuruta ◽  
A. Watanabe
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Gas Turbines ◽  
High Quality ◽  
Constant Frequency ◽  
Generating Set ◽  
Generating Sets ◽  
Power Turbine ◽  
Computer Centers ◽  
Supply Systems

A control system has been developed for a high-quality generating set (150-kW) equipped with a two-shaft gas turbine featuring a variable power turbine nozzle. Because this generating set satisfies stringent frequency stability requirements, it can be employed as the direct electric power source for computer centers without using constant-voltage, constant-frequency power supply systems. Conventional generating sets of this kind have normally been powered by single-shaft gas turbines, which have a larger output shaft inertia than the two-shaft version. Good frequency characteristics have also been realized with the two-shaft gas turbine, which provides superior quick start ability and lower fuel consumption under partial loads.

scholarly journals A Control System for a High-Quality Generating Set Equipped With a Two-Shaft Gas Turbine

1990 ◽  
Author(s):  
H. Kumakura ◽  
T. Matsumura ◽  
E. Tsuruta ◽  
A. Watanabe
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Gas Turbines ◽  
High Quality ◽  
Constant Frequency ◽  
Generating Set ◽  
Generating Sets ◽  
Power Turbine ◽  
Computer Centers ◽  
Supply Systems

A control system has been developed for a high-quality generating set (150kW) equipped with a two-shaft gas turbine featuring a variable power turbine nozzle. Because this generating set satisfies stringent frequency stability requirements, it can be employed as the direct electric power source for computer centers without using constant-voltage, constant-frequency power supply systems. Conventional generating sets of this kind have normally been powered by single-shaft gas turbines which have a larger output shaft inertia than the two-shaft version. Good frequency characteristics have also been realized with the two-shaft gas turbine, which provides superior quick start ability and lower fuel consumption under partial loads.

Solar STIG Cycle Annual Analysis

2012 ◽  
Author(s):  
Maya Livshits ◽  
Abraham Kribus
Keyword(s):  
Gas Turbine ◽  
Low Cost ◽  
Steam Injection ◽  
Solar Concentrators ◽  
Solar Fraction ◽  
Variable Power ◽  
Temperature And Pressure ◽  
Gas Turbine Exhaust ◽  
A Minor ◽  
Turbine Exhaust

The Steam Injection Gas turbine (STIG) cycle offers a way to use solar steam at a low temperature and pressure, generated by low-cost concentrators, in order to augment the power output of the turbine. In conventional STIG, the steam is generated from the gas turbine exhaust and injected into the combustion chamber. In previous work we proposed the solar augmentation of a STIG cycle, using solar concentrators to generate steam in much larger amounts compared to the natural limit of heat recovery in the conventional STIG. In the current work, an annual analysis of the Solar STIG cycle is presented for two sites with moderate and high annual DNI, under two scenarios: constant power with a varying Solar Fraction (SF), and variable power with a nearly constant SF. Results show typical annual SF in the range of 20–30%, and solar to electricity efficiency of around 15%, similar to the annual efficiency of current parabolic trough plants that operate at much higher pressure and temperature. The variable power scenario improves the SF with only a minor decrease in efficiency.

Development of a Control System for a Dual-Shaft Gas Turbine for Rapid Load Acceptance and Rejection

1962 ◽  
Author(s):  
Leo P. McGuire
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Axial Compressor ◽  
Operating Conditions ◽  
Two Stage ◽  
Control Valves ◽  
Air Inlet ◽  
Voltage Variation ◽  
Power Turbine ◽  
Voltage Recovery

The application required large electrical load changes with very limited variations in frequency and voltage. With a dual-shaft gas turbine, nominal rating 8000 kilowatts, instantaneous loads up to 90 per cent rated were successfully accepted and rejected with frequency maintained within a one and one half per cent band. Voltage variation did not exceed four per cent. Frequency and voltage recovery were well within two seconds. The foregoing was accomplished by incorporating a control system which permitted operation of the turbine at other than normal operating conditions when auxiliary control valves were preset in anticipation of the load variation. The auxiliary control valves were air-inlet throttling valves, an inter-turbine bleed valve, and an additional fuel valve. The basic machine consisted of a 15-stage axial compressor, a two-stage, high-pressure turbine, and a two-stage power turbine. The unique requirements necessitated off-design operation and considerable extrapolation from known test data. However, it was possible to program the control-system components so that a conventional pneumatic control system was capable of maintaining speed within the prescribed band even though the applied load varied from that anticipated by as much as 12.5 per cent.

Development of a PLC Based Controller for Marine Gas Turbine Generator

2011 ◽  
Author(s):  
Amrut Dilip Godbole ◽  
Ankush Gulati ◽  
Alok Bhagwat
Keyword(s):  
Control System ◽  
Control Systems ◽  
Gas Turbine ◽  
Low Cost ◽  
Turbine Generator ◽  
Engineering Technology ◽  
Marine Engineering

The advent of processor based controllers including the PLC has provided a low cost alternative for up gradation of control systems when faced with the challenges of maintenance and obsolescence. A project was undertaken at the Centre of Marine Engineering Technology of the Indian Navy to design, develop and test a PLC based controller for a Gas Turbine Generator as an alternative to the legacy relay logic based control system. The paper explains the methodology adopted towards the various stages of the development of the PLC based controller using Commercially-Off-The-Shelf (COTS) items. It also brings out the salient advantages offered as a result of this transformation.

scholarly journals Design and Development of a 12,500-Hp Gas Turbine

1971 ◽  
Author(s):  
C. Austin
Keyword(s):  
Gas Turbine ◽  
Electrical Power ◽  
Load Test ◽  
Test Facility ◽  
Gas Generator ◽  
Design Concepts ◽  
Power Turbine ◽  
Gas Generators ◽  
Design Speed ◽  
Simulated Field

This paper outlines the major design considerations and development experience of a 12,500-hp dual-shaft gas turbine. The unit uses an aircraft derivative gas turbine as the gas generator and is designed to operate in an attended or unattended station without external electrical power above 60 per cent of design speed. Proven power turbine design concepts were combined with the advantages of a variety of highly developed gas generators to produce a reliable machine which could be introduced with a minimum of development time. A special test facility was constructed to subject the unit to a full load test under conditions which simulated field operation.

scholarly journals Variable Power Turbine Nozzle System Mechanical Development

1977 ◽  
Author(s):  
D. L. Carriere ◽  
V. D. Rao ◽  
M. R. Vaughen
Keyword(s):  
Power Plant ◽  
Response Time ◽  
Gas Turbine ◽  
Power Turbine ◽  
Variable Power ◽  
Industrial Gas Turbine ◽  
Gas Turbine Power Plant ◽  
Cycle Temperature

Mechanical, material, thermal, and actuator response time problems encountered and resolved during the development of a variable power turbine nozzle system for a nominal 400-hp (300-kw), 1950 F (1339 K) maximum cycle temperature truck industrial gas turbine power plant are described in this paper.

Sign in / Sign up

Export Citation Format

Share Document