Construction and Initial Operating Experience on Two Prototype Gas Turbine Power Plants

1974 ◽  
Author(s):  
P. J. Hoppe ◽  
B. Keller
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Operating Experience ◽  
Plant Construction ◽  
Blue Lake

In this paper, the authors describe construction and initial operating experience on two prototype gas turbine power plants located thousands of miles apart: Isefjordvaerket’s 140-MW plant at Kyndby, Denmark, built by Brown Boveri-Sulzer Turbomachinery (BST) and Northern States Power’s 200-MW plant at Blue Lake, Minnesota, built by Turbodyne Corporation (TBD). The paper provides a unique opportunity of comparing two approaches to a similar plant construction concept.

Operating Experience and Design Features of Closed Cycle Gas Turbine Power Plants

1956 ◽  
Author(s):  
Curt Keller
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Operating Experience ◽  
Progress Report ◽  
Closed Cycle ◽  
Design Features ◽  
The Usa

This paper is the author’s third progress report in the USA on the AK-closed cycle gas turbine.

Update on Mitsubishi G Series Gas Turbines With Over 78,000 Hours Fleet Operation

2003 ◽  
Author(s):  
V. Kallianpur ◽  
D. Stacy ◽  
Y. Fukuizumi ◽  
H. Arimura ◽  
S. Uchida
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Operating Time ◽  
Operating Experience ◽  
Combined Cycle ◽  
Air Cooling ◽  
Commercial Operation ◽  
Advanced Stages ◽  
Steam Cooling

Seven G gas turbines from Mitsubishi are in commercial operational at various combined cycle power plants since the first Mitsubishi G gas turbine was inroduced in 1997. The combined operating time on the fleet exceeds over 78,000 actual hours. Additional power plants using Mitsubishi G-series gas turbines are in advanced stages of commissioning in the U.S.A., and are expected to be in commercial operation in 2003. This paper describes operating experience of the Mitsubishi G-series gas turbines, which apply steam-cooling instead of air-cooling to cool the combustor liners. The paper discusses design enhancements that were made to the lead M501G gas turbine at Mitsubishi’s in-house combined cycle power plant facility. It also addresses the effectiveness of those enhancements from the standpoint of hot parts durability and reliability at other power plants that are in commercial operation using Mitsubishi G gas turbines.

scholarly journals Integrated Coal Gasification Combined Cycle: Current Experience — Future Promise

1996 ◽  
Author(s):  
Bjorn Kaupang ◽  
Douglas M. Todd
Keyword(s):  
Gas Turbine ◽  
Heavy Oil ◽  
Power Plants ◽  
Coal Gasification ◽  
Operating Experience ◽  
Heat Rate ◽  
Combined Cycle ◽  
The Usa ◽  
Under Construction ◽  
The Cost

Significant progress has been made in the installation and initial operation of several IGCC power plants. At least six IGCC projects are scheduled to enter commercial operation in the USA and in Europe during 1996. Several additional IGCC projects are under construction or under development using many different gasification systems. Gas turbine manufacturers introduced advanced gas turbine technology in 1995, resulting in IGCC efficiency for coal and heavy oil-fired plants of up to 50% (LHV) with plant costs consistent with conventional steam plants. Gas turbine developments specifically aimed at IGCC applications allow the use of environmentally low quality fuels without added impact on the environment. This paper discusses the current operating experience of several of the initial IGCC plants and illustrates the very attractive fuels flexibility with the combined-cycle plants burning naphtha or distillate oils initially with later conversions to IGCC burning lignite, heavy oil or orimulsion. This paper also discusses the heat rate and output performance capabilities of the IGCC with H level gas turbine technology and the resulting impacts on the cost of electricity from IGCC plants.

A Higher Turndown Flexibility on AE64.3A Gas Turbine: Design and Operating Experience

2011 ◽  
Author(s):  
Federico Bonzani ◽  
Luca Bozzi ◽  
Alessia Bulli ◽  
Andrea Silingardi ◽  
Domenico Zito
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Energy Demand ◽  
Power Plants ◽  
Operating Experience ◽  
Maintenance Cost ◽  
Power Demand ◽  
Service Market ◽  
Low Load ◽  
Base Load

Italian power generation market is living today a period of substantial changes due to the liberalization process, climate issues, natural gas price fluctuation and the uncertain future of nuclear and coal. In this framework, many gas turbine power plants, originally designed to operate mainly at base load, feel the necessity to be flexibly and profitably operated into the dispatch and ancillary energy service market. In particular, many operators ask for the possibility to operate their gas turbines intermittently, frequently cycling and quickly ramping up and down to satisfy energy demand. Such using drafts new trade off between profitability and maintenance cost. From this point of view it’s not unusual to shut down the engine when the power demand is low if the unit cannot be cost effectively parked at a suitable low load and then quickly ramped up to base load when the power demand is higher. The main barrier against lowering the minimum load of the gas turbines is the increase of the CO emission. When the engine operates close to its turndown load the compressor airflow is such that the heat released by the flame cannot properly support the conversion of CO into CO2. In such a condition, the power plant will not comply with the environmental legislation and must be operated at a higher load or, worse, shut down. An operating strategy has been devised to face up such problem. It is based on the adjustment of compressor IGV (Inlet Guide Vanes) and the optimisation of cooling air consumption in order to keep the proper amount of combustion air close to the turndown load. This paper shows the feasibility check, the installation and final field tests of the low load turndown upgrade on a AE64.3A gas turbine which allowed to operate the unit in a more cost effective way even when the power demand is low.

scholarly journals Special Design Considerations and Operating Experience of Two Gas Turbine Power Plants in Libya

1984 ◽  
Author(s):  
Kim Y. Lau
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Operating Experience ◽  
Test Results ◽  
Electrical Load ◽  
Special Design ◽  
Turbine Generator ◽  
Design Considerations ◽  
Generator Sets ◽  
Multiple Units

This paper describes two gas turbine power plants in Libya which use multiple units of the Westinghouse W191G ECONO-PAC as turbine-generator sets. Special design considerations in the crude and residual fuel burning capability and system performance on instant electrical load pick-up are described in detail. The field test results of the turbine control system are also summarized in this paper. In addition, some of the operating experience in the fuel system and gas turbine combustion system is discussed briefly.

Advancements in H Class Gas Turbines and Combined Cycle Power Plants

2018 ◽  
Author(s):  
Christian Vandervort
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Operating Experience ◽  
Combined Cycle ◽  
Test Facility ◽  
Air Cooling ◽  
Operational Flexibility ◽  
Cycle Efficiency

The power generation industry is facing unprecedented challenges. High fuel costs combined with an increased penetration of renewable power has resulted in greater demand for high efficiency and operational flexibility. Imperative for a reduced carbon footprint places an even higher premium on efficiency. Power producers are seeking highly efficient, reliable, and operationally flexible solutions that provide long-term profitability in a volatile environment. New generation must also be cost-effective to ensure affordability for both domestic and industrial consumers. Gas turbine combined cycle power plants provide reliable, dispatch-able generation with low cost of electricity, reduced environmental impact, and improved flexibility. GE’s air-cooled, H-class gas turbines (7/9HA) are engineered to achieve greater than 63% net, combined cycle efficiency while delivering operational flexibility through deep, emission-compliant turndown and high ramp rates. The largest of these gas turbines, the 9HA.02, exceeds 64% combined cycle efficiency (net, ISO) in a 1 × 1, single-shaft configuration. In parallel, the power plant has been configured for rapid construction and commissioning enabling timely revenue generation for power plant developers and owners. The HA platform is enabled by 1) use of a simple air-cooling system for the turbine section that does not require external heat exchange and the associated cost and complexity, and 2) use of well-known materials and coatings with substantial operating experience at high firing temperatures. Key technology improvements for the HA’s include advanced cooling and sealing, utilization of unsteady aerodynamic methodologies, axially staged combustion and next generation thermal barrier coating (TBC). Validation of the architecture and technology insertion is performed in a dedicated test facility over the full operating range. As of February 2018, a total of 18 HA power plants have achieved COD (Commercial Operation). This paper will address three topics relating to the HA platform: 1) gas turbine product technology, 2) gas turbine validation and 3) integrated power plant commissioning and operating experience.

Commercialization and Fleet Experience of the 7/9HA Gas Turbine Combined Cycle

2019 ◽  
Author(s):  
Christian Vandervort ◽  
David Leach ◽  
David Walker ◽  
Jerry Sasser
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
High Efficiency ◽  
Operating Experience ◽  
Combined Cycle ◽  
Lessons Learned ◽  
Operational Flexibility ◽  
Industrial Gas Turbine ◽  
Cycle Efficiency

Abstract The power generation industry is facing unprecedented challenges. High fuel costs and increased penetration of renewable power have resulted in greater demand for high efficiency and operational flexibility. Imperatives to reduce carbon footprint place an even higher premium on efficiency. Power producers are seeking highly efficient, reliable, and operationally flexible solutions that provide long-term profitability in a volatile environment. New generation must also be cost-effective to ensure affordability for both domestic and industrial consumers. Gas turbine combined cycle power plants meet these requirements by providing reliable, dispatchable generation with a low cost of electricity, reduced environmental impact, and broad operational flexibility. Start times for large, industrial gas turbine combined cycles are less than 30 minutes from turning gear to full load, with ramp rates from 60 to 88 MW/minute. GE introduced the 7/9HA industrial gas turbine product portfolio in 2014 in response to these demands. These air-cooled, H-class gas turbines (7/9HA) are engineered to achieve greater than 63% net combined cycle efficiency while delivering operational flexibility through deep, emission-compliant turndown and high ramp rates. The largest of these gas turbines, the 9HA.02, is designed to exceed 64% combined cycle efficiency (net, ISO) in a 1×1, single-shaft (SS) configuration. As of December 2018, a total of 32 7/9HA power plants have achieved COD (Commercial Operation Date) while accumulating over 220,000 hours of operation. These plants operate across a variety of demand profiles including base load and load following (intermediate) service. Fleet leaders for both the 7HA and 9HA have exceeded 12,000 hours of operation, with multiple units over 8,000 hours. This paper will address four topics relating to the HA platform: 1) gas turbine product technology, 2) gas turbine validation, 3) integrated power plant commissioning and operating experience, and 4) lessons learned and fleet reliability.

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