Design of a Practical Controller for a Commercial Scale Fossil Power Plant

1979 ◽  
Vol 101 (4) ◽  
pp. 284-289 ◽  
Author(s):  
Asok Ray ◽  
D. A. Berkowitz
Keyword(s):  
Rate Of Change ◽  
Normal Operation ◽  
Generation System ◽  
System A ◽  
Operating Level ◽  
Flash Tank ◽  
Load Rate ◽  
Power Generation System ◽  
Fossil Power Plant ◽  
Minimum Operating

To design an improved fuel controller for an operating, 386 MW(e), oil-fired power generation system, a mathematical model of the plant was developed from fundamental principles to predict thermal-hydraulic transients. This controller was successfully implemented in the actual plant by replacing a portion of the original control system. It was shown that the resulting minimum operating level of the system could be reduced from 220 MW (e) to flash tank level of 130 MW(e), and the customary load rate of change during normal operation improved from approximately 2 MW/min to 9 MW/min. Operation of the plant on automatic dispatch was subsequently demonstrated.

Fuel Controller Design in a Once-Through Subcritical Steam Generator System

1978 ◽  
Vol 100 (1) ◽  
pp. 189-196 ◽  
Author(s):  
Yu-Hwan Lin ◽  
R. S. Nielsen ◽  
A. Ray
Keyword(s):  
Steam Generator ◽  
Controller Design ◽  
Rate Of Change ◽  
Normal Operation ◽  
Generator System ◽  
Stable Operating ◽  
Operating Level ◽  
Flash Tank ◽  
Load Rate ◽  
Power Generation System

Established techniques have been applied for modeling a once-through subcritical steam generator in an oil-fired 386 MW(e) power generation system. The model was used to design a fuel controller which was implemented in the actual plant. The resulting minimum stable operating level of the system has been reduced from 220 MW(e) to flash tank level of 130 MW(e), and the customary load rate-of-change during normal operation improved from approximately 2 MW/min to 9 MW/min.

Exergoeconomic Evaluation of a Solid-Oxide Fuel-Cell-Based Combined Heat and Power Generation System

2013 ◽  
Author(s):  
Young Duk Lee ◽  
Kook Young Ahn ◽  
T. Morosuk ◽  
G. Tsatsaronis
Keyword(s):  
Power Generation ◽  
Generation System ◽  
Real Cost ◽  
System A ◽  
Energy And Exergy ◽  
Power Generation System ◽  
Exergetic Analysis ◽  
Catalytic Combustor ◽  
Exergoeconomic Analysis ◽  
The Cost

An exergoeconomic evaluation has been conducted for a 100kW-class SOFC power generation system, in order to evaluate the cost effectiveness of the system. The exergoeconomic analysis is an appropriate combination of an exergy analysis and an economic analysis. Through an exergoeconomic analysis, we obtain the real cost associated with each stream and component in a system. We also can calculate the portion of the cost that is associated with the exergy destruction within each component. The analyzed system, a 100kW SOFC power generation system, consists of SOFC stack, reformer, catalytic combustor, heat exchangers, pumps, blowers, inverter, and HRSG for heat recovery. As a first step, mass, energy, and exergy balances were formulated. Then a conventional exergetic analysis (based on the concept of exergy of fuel/exergy of product) was performed. Next, a levelized cost for each component was calculated based on the purchased equipment costs using the Total Revenue Requirement (TRR) method with appropriate economic assumptions. Finally, the cost structure of the SOFC was figured out through an exergoeconomic evaluation. Finally suggestions have been made for reducing the cost associated with the product of the system.

scholarly journals MPPT Controller based Nine Level Inverter using Solar Power Generation System

2020 ◽  
Vol 9 (8) ◽  
pp. 688-693
Keyword(s):  
Power Generation ◽  
Output Voltage ◽  
Solar Power ◽  
Power Converter ◽  
Photovoltaic System ◽  
Generation System ◽  
Solar Power Generation ◽  
System A ◽  
Power Generation System ◽  
Power Point

This project proposed a solar power generation system is used for the MPPT (maximum power point tracker) controller in a nine-level inverter. The selection of the capacitor circuit is configured using nine-level inverter and a cascade-connected to the full-bridge power converter. The nine-level inverter contains seven powers. Electronic switches simplify the configuration of the circuit system. A single electronic power switch is switched to the high frequency at any time to generate a nine-level output voltage. The output of the photovoltaic solar panel system will be fed into an MPPT algorithm to obtain a maximum amount of energy from a photovoltaic system, and this technique is used for the generation of residential renewable energy. The output voltage of a photovoltaic solar system is completed by the use of the DC-DC power converter with independent voltage sources for an inverter and reduces the harmonics generated. The nine-level inverter reduced with switches in power generation.

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