GRDA Unit 2 Turbine Generator Control System Upgrade: A Case Study

2008 ◽  
Author(s):  
Charles J. Barney ◽  
Jerry A. Kopczynski
Keyword(s):  
Control System ◽  
Steam Turbine ◽  
Turbine Generator ◽  
Electric Generator ◽  
Turbine Generators ◽  
Protection Systems ◽  
Generating Capacity ◽  
Total Maximum ◽  
Site Training

Grand River Dam Authority (GRDA) operates a coal-fired electrical production power plant located thirty miles from Tulsa, Oklahoma. The facility contains two primary turbine-generators, referred to as Unit 1 and Unit 2. Each unit consists of a coal combustion boiler, a steam turbine, an electric generator, pollution control equipment, and auxiliary support equipment. Total maximum facility generating capacity for this plant is 1010 megawatts. ALSTOM Power was awarded a contract by GRDA to upgrade the obsolete control system for its Unit 2 turbine-generator during the fall 2007 outage. The scope included new steam turbine valves actuators, a 3-channel hydraulic safety system, electronic turbine control and protection systems, and a generator automatic voltage regulator, along with associated services and on-site training. Demolition, installation, commissioning and all performance tests had to be completed during a short 3-weeks schedule. The project is now complete; an obsolete control system was replaced with a more efficient, state-of-the-art control system. This paper will discuss and document details concerning this modernization control system.

Gas Turbine Control System Integration for Royal Caribbean Millennium Class Cruise Liner

2000 ◽  
Author(s):  
David J. Olsheski ◽  
William W. Schulke
Keyword(s):  
Control System ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Waste Heat ◽  
Combined Cycle ◽  
Direct Drive ◽  
Dynamic Features ◽  
Turbine Generator ◽  
Marine Propulsion ◽  
Prime Movers

Traditionally commercial marine propulsion needs have been met with direct drive reciprocating prime movers. In order to increase efficiency, simplify installation and maintenance accessibility, and increase cargo / passenger capacity; indirect electric drive gas and steam turbine combined cycle prime movers are being introduced to marine propulsion systems. One such application is the Royal Caribbean Cruise Line (RCCL) Millennium Class ship. This commercial vessel has two aero-derivative gas turbine generator sets with a single waste heat recovery steam turbine generator set. Each is controlled by independent microprocessor based digital control systems. This paper addresses only the gas turbine control system architecture and the unique safety and dynamic features that are integrated into the control system for this application.

ANALISA KERUSAKAN KONDENSOR UNIT 1- 4 PLTU - XYZ BANTEN (AN ENGINEERING REPORT CASE STUDY)

2020 ◽  
Vol 3 (2) ◽  
pp. 111-121
Author(s):  
Tatan Zakaria ◽  
Trian Suryaman
Keyword(s):  
Steam Turbine ◽  
Water System ◽  
Cooling Water ◽  
Turbine Generator ◽  
Main Equipment ◽  
Cooling Water System

Pembangkit Listrik Tenaga Uap (PLTU) adalah salah satu jenis pembangkit listrik dimana prosesnya sebagai sistem konversi energi. Energi potensial kimiawi bahan bakar batubara dikonversi energi panas pembakarannya untuk merubah air umpan ketel uap menjadi uap bertekanan. Selanjutnya energi potensial tekanan uap berubah menjadi energi kinetik yang memutarkan sudu-sudu turbin uap menjadi energi mekanik rotasi as turbin, yang selanjutnya energi mekanik putaran as dirubah menjadi energi listrik melaui generator. Pembangkit Listrik Tenaga Uap terdiri dari alat utama (main equipment) dan berbagai alat pendukung (accessories), seperti ketel uap (boiler), turbin uap (steam turbine), generator, sistem bahan bakar, sistem udara pembakaran, sistem abu batu bara, sistem air ketel uap, sistem air pendinginan (cooling water system). Semua peralatan harus mempunyai kualitas dan reliabilitas agar sistem pembangkit beroperasi tanpa gangguan. Sistem gangguan alat-alat pendukung bisa menjadi gangguan pada alat-alat utama. Kondensor turbin uap merupakaan salah satu alat pendukung turbin uap. Dari data selama penelitian enam bulan didapatkan penyebab kerusakan kondensor adalah kebocoran pipa kondensor dengan jumlah 142 kejadian atau 31 %,  penyebab masalah kedua yaitu pada peralatan bermasalah (CWP, CEP, LP Drain Pump, GSC Exhaust Fan, Venting Pump)  dengan jumlah 88 kejadian atau 19 %,  ketiga yaitu sistem vakum ejector dengan jumlah 64 kejadian atau 14 %, keempat yaitu transmiter abnormal dengan jumlah 56 atau 12 %,  kelima yaitu pengujian kondensor dengan jumlah 56 kejadian atau 12 %, serta terakhir penyebab masalah kondensor keenam yaitu CL- air pengisi tinggi dengan jumlah 55 kejadian atau 12 %.

Computer Simulation and Design of the Control System for a Wind Turbine Generator

1980 ◽  
Vol 102 (1) ◽  
pp. 14-18
Author(s):  
H. Sambar ◽  
V. Pavelic ◽  
R. J. Warner
Keyword(s):  
Control System ◽  
Wind Turbine ◽  
Hydraulic System ◽  
Load Condition ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Turbine Generators ◽  
Wind Turbine Generators ◽  
Control Concept ◽  
New Generation

This project is a part of an overall study aimed at producing a new generation of wind turbine generators. The wind turbine generator proposed is a horizontal axis machine with three blades operating downwind. A hydraulic system actuates mechanical linkages to control blade pitch during operation. The blade pitch control concept provides active control of rotor rpm above the rated wind speed and during no load condition. The lowering of blade and tower loads while providing the capability for well tuned rotor control are its primary features. A hydraulic system, designed to control the pitch of the blades of a wind turbine generator, is simulated on the digital computer using the Runge-Kutta method. The control system subroutine is coupled with the aerodynamic subroutines of the blades to represent the model for the wind turbine generator. The response of the simulated wind turbine to a real wind case is shown to agree with the desired response.

scholarly journals A New Learning Experience in Gas Turbine Generator a Case Study of Blackout Conditions Due to Tripping of Gtg and the Necessary Corrective Actions to Prevent the Reoccurrence

2020 ◽  
Vol 3 (1) ◽  
Keyword(s):  
Gas Turbine ◽  
Learning Experience ◽  
Total Power ◽  
Turbine Generator ◽  
Root Cause ◽  
Turbine Generators ◽  
Term Basis ◽  
Corrective Actions

This paper describes about the case study of a very interesting and peculiar blackout conditions (total power failure) arising out of both the Gas Turbine Generators (Two units of GTG, namely GTG-01 & GTG-02) units back to back tripping in a short span of a week’s time. It brings out the various observations noted during that condition and it’s root cause analysis. It also highlights the various possible corrective actions in a short term and long term basis to prevent the reoccurrence of such blackout situations.

Model-Based Unbalance Estimation for Steam Turbine-Generators

2007 ◽  
Author(s):  
Tachung Yang ◽  
Kwang-Lu Koai ◽  
Chun-Yi Lin ◽  
Wen-Ming Xu
Keyword(s):  
Parameter Estimation ◽  
Steam Turbine ◽  
Coefficient Matrix ◽  
Influence Coefficient ◽  
Turbine Generator ◽  
Model Based ◽  
Turbine Generators ◽  
Modal Damping ◽  
Bode Plots ◽  
Diagnosis Tool

As demanded for parameter estimation based on the measured signals, a model-based method to estimate the unbalance distribution of steam turbine-generators due to unbalance response was proposed in this paper. The equivalent modal damping ratios for each mode estimated by GA from the measured Bode plots are incorporated into the modal models. A finite number of the modes are used to calculate the influence coefficient matrix. Finally, the equivalent unbalance distribution on the selected correction planes is estimated based on the measured responses. The merit of this approach is that no test run of trial mass is required. The feasibility of this method is demonstrated using a steam turbine-generator. The method presented not only provides a useful means for balancing work, but also can be further developed into an identification and diagnosis tool.

Generation Control System: Using Isochronous Load-Sharing Principles With Gas and Steam Turbine Generators

2019 ◽  
Vol 25 (2) ◽  
pp. 36-44
Author(s):  
Krishnanjan Gubba Ravikumar ◽  
Brandon Bosley ◽  
Ty Clark ◽  
Julio Garcia
Keyword(s):  
Control System ◽  
Steam Turbine ◽  
Load Sharing ◽  
Turbine Generators ◽  
Generation Control
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