scholarly journals Fault Examination of a 400kV Switchyard of 500MW Thermal Power Plant

2019 ◽  
Vol 8 (6S3) ◽  
pp. 772-775
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Transmission Lines ◽  
Thermal Power Plant ◽  
Power Flow ◽  
Thermal Power ◽  
Vital Role ◽  
Load Flow ◽  
Fault Analysis ◽  
Reliability Performance

The present paper deals with Load flow and stability analysis of thermal power plant. In the thermal power plant switchyards plays vital role in various control, security and monitoring features that enable robust routing of power from generators to loads through a complex network of transmission lines. Analysis of such switchyard is the key and most important task for planning of the Generation plant. In the past there have been many widespread blackouts in interconnected power systems, so it is essential to assure that power system must operate more stablely and reliably. In this present discussion, the adopted system of 500MW Thermal power plant comprises a generator bus connected to 6 load buses and 1 utility bus interconnected with 400kV transmission lines. Power flow studies and fault analysis are simulated in Power World simulator environment. These studies include the operating points when faults occurred in the system for the system reliability, line outages and its impact on other transmission lines such as incoming or outgoing lines and also on bus sections. Prior to planning and construction of substation, these studies help to calculate indices that reflect the reliability performance of the system. These analyses give the detail overview for future growth of power generation and subsequent extension of switchyard.

Deriving the hierarchical relationship of factors of fly ash handling

2018 ◽  
Vol 29 (3) ◽  
pp. 444-455 ◽  
Author(s):  
Sushil ◽  
Surya Prakash Singh ◽  
Aarti Singh
Keyword(s):  
Fly Ash ◽  
Power Plant ◽  
Conceptual Framework ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Vital Role ◽  
Interpretive Structural Modeling ◽  
Content Type ◽  
Handling Technique ◽  
Relationship Of

Purpose The purpose of this paper is to develop a conceptual framework of fly ash (FA) handling by using the total interpretive structural modeling (TISM) technique in the Indian context. Design/methodology/approach The conceptual framework of the FA handling technique has been developed by using the TISM technique, where the FA handling factors have been identified from literature and verified by experts. Findings The conceptual framework of FA handling technique developed by using TISM contributes to the development of FA handling hierarchy. The framework identifies that there are 12 important factors which play a vital role in FA handling. The conceptual model indicates that particle size distribution derives FA handling technology. Research limitations/implications This study identified important factors for FA handling and it has implication for both organizations and policy makers. This study delivers the factors which play an important role in handling FA in a thermal power plant. This study highlights important linkages essential for the expansion of FA handling technologies and policies. Originality/value This study is unique in itself as it studies the FA handling factors through the qualitative modeling technique and has made its contribution in FA handling by providing the conceptual framework for managing FA in the thermal power plant.

scholarly journals Load Flow Analysis in Hybrid AC-DC Transmission Network

2021 ◽  
pp. 617-624
Author(s):  
Ajith M ◽  
Dr. R. Rajeswari
Keyword(s):  
Power Systems ◽  
Power System ◽  
Transmission Lines ◽  
Power Flow ◽  
Reactive Power ◽  
Short Circuit ◽  
Flow Analysis ◽  
Load Flow ◽  
System Stability ◽  
And Control

Power-flow studies are of great significance in planning and designing the future expansion of power systems as well as in determining the best operation of existing systems. Technologies such as renewables and power electronics are aiding in power conversion and control, thus making the power system massive, complex, and dynamic. HVDC is being preferred due to limitations in HVAC such as reactive power loss, stability, current carrying capacity, operation and control. The HVDC system is being used for bulk power transmission over long distances with minimum losses using overhead transmission lines or submarine cable crossings. Recent years have witnessed an unprecedented growth in the number of the HVDC projects. Due to the vast size and inaccessibility of transmission systems, real time testing can prove to be difficult. Thus analyzing power system stability through computer modeling and simulation proves to be a viable solution in this case. The motivation of this project is to construct and analyze the load flow and short circuit behavior in an IEEE 14 bus power system with DC link using MATLAB software. This involves determining the parameters for converter transformer, rectifier, inverter and DC cable for modelling the DC link. The line chosen for incorporation of DC link is a weak bus. This project gives the results of load flow and along with comparison of reactive power flow, system losses, voltage in an AC and an AC-DC system.

Fuzzy-TOPSIS for Appropriate Site Selection for Establishing a Thermal Power Plant

2014 ◽  
Vol 619 ◽  
pp. 385-389 ◽  
Author(s):  
Chhabi Ram Matawale ◽  
Soumya Panigrahi ◽  
Santosh Kumar Sahu ◽  
Saurav Datta ◽  
Siba Sankar Mahapatra
Keyword(s):  
Power Plant ◽  
Site Selection ◽  
Thermal Power Plant ◽  
Transmission Loss ◽  
Thermal Power ◽  
Fuzzy Topsis ◽  
Vital Role ◽  
Development Environment ◽  
Generation Cost ◽  
Selection Of

Thermal Power Plant (TPP) is one of those discoveries that have changed the daily life of everybody and playing vital role in the present real world. The selection of site for thermal power plant, affects the amount of energy generated, power generation cost, economical development, environment and transmission (loss of power). In present work, fuzzy multi-criteria decision making (FMCDM) approach is proposed for site selection of TPP under partial or incomplete information. The proposed approach initially identified the criteria for site selection of TPP. Then the experts are provided linguistic ratings as well as weights to the potential alternatives against the selected criteria. Fuzzy-TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) is applied to generate aggregate scores selection of best alternative. Finally a case empirical research is adapted to fruitful the proposed approach.

scholarly journals Voltage and frequency control in conventional and PV integrated power systems by a particle swarm optimized Ziegler–Nichols based PID controller

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Arabinda Ghosh ◽  
Anjan Kumar Ray ◽  
Md. Nurujjaman ◽  
Mo Jamshidi
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Thermal Power Plant ◽  
Pid Controller ◽  
Frequency Control ◽  
Thermal Power ◽  
Particle Swarm ◽  
Objective Functions ◽  
Performance Improvements ◽  
Frequency Variations

AbstractVariations of load demands, expansion of power system by interconnections among different areas and integration of renewable energy sources bring new challenges for stable, reliable and uninterrupted operations of power systems. In this paper, a control technique is proposed to control and optimize the performances of the three models having importance in the present and future energy systems. These are the output variations of an automatic voltage regulation (AVR) system, frequency variations in a load frequency control (LFC) system of a thermal power plant and frequency variations of a PV integrated thermal power plant. The proposed controller is a particle swarm optimized Ziegler–Nichols (ZN) method based proportional-integral-derivative (PID) controller. A particle swarm optimization (PSO) method suffers from the unavailability of prior knowledge of initial values of parameters. Whereas, the classical ZN method leaves the scope for performance improvements of a system. A rejuvenation to the classical ZN method is proposed by integrating PSO. The combined effect optimizes the voltage and the frequency performances, while ensuring system stability. Additionally, different objective functions inspired from energy industry requirements are considered to demonstrate performance improvements of the systems (e.g. maximum overshoot, steady-state error, settling time). The robustness of the proposed method is demonstrated by considering parametric uncertainty in the system. The proposed method is compared with performances of different controllers (e.g. PI, fuzzy PI, fuzzy PID), different iterative soft computing methods (e.g. pattern search, artificial bee colony, different variants of PSO) and classical optimization method (e.g. linear matrix inequality) considering different objective functions and different load disturbances for the aforementioned models. It is also observed that better performances are obtained using a significantly less number of iterations.

scholarly journals Solar Field Optimization and its Impact on Overall Design and Performance of Solar Tower Thermal Power Plant in Bangladesh

2021 ◽  
Vol 242 ◽  
pp. 01003
Author(s):  
Md. Sakib Hossain ◽  
Soad Shajid
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Thermal Power Plant ◽  
Electricity Generation ◽  
Large Scale ◽  
Thermal Power ◽  
Mathematical Framework ◽  
Design Point ◽  
Overall Design ◽  
Solar Field

Electricity generation using solar thermal power systems can be made more efficient and both technically and economically feasible in countries receiving moderate solar radiation like Bangladesh through thorough optimization of different parts of the power plant. In this paper a theoretical and mathematical framework for optimization of a 150 MW solar tower thermal power plant in Bangladesh which uses molten salt as HTF has been developed by applying different methods of selecting crucial design aspects, such as design point DNI, solar multiple, design point temperature etc. after selecting the most appropriate location based on GHI and DNI data. The effect of these design aspects on the overall design of the power plant including the number of heliostats, solar field land area, tower height, receiver dimensions etc. have also been studied and finally the performance analysis of the power plant has been conducted. Analysis of performance reveals that the optimized power plant would be able to deliver 528.66 GW-h electricity annually to the national grid while operating at a capacity factor of 40.2% and gross-net conversion efficiency of 88.635%. The promising performance of the power plant would encourage further research and innovation regarding large scale electricity generation from solar energy in Bangladesh.

scholarly journals Fault detection in electric power systems based on control charts

2013 ◽  
Vol 10 (1) ◽  
pp. 73-90 ◽  
Author(s):  
Emilija Kisic ◽  
Vera Petrovic ◽  
Miroslav Jakovljevic ◽  
Zeljko Djurovic
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Thermal Power Plant ◽  
Control Charts ◽  
Thermal Power ◽  
Combustion Process ◽  
Electric Power Systems ◽  
Industrial Processes ◽  
Boiler Furnace ◽  
Nikola Tesla

This paper analyzes the control system of the combustion process and protection from explosions in the boiler furnace of thermal power plant using the techniques of control charts. The data from old and newly introduced system for measuring under-pressure differences in boiler furnace at unit B2, TE Nikola Tesla (TENT) Obrenovac, were analyzed. The signal of undepressure difference is used for boiler protection function in thermal power plant TENT B. The results that confirm the advantages of the newly introduced system of measurements are presented. A detailed discussion about the benefits and the shortcomings of the control charts application in industrial processes are given in the paper.

Three Phase Power Flow Incorporating Static Var Compensator

2014 ◽  
Vol 573 ◽  
pp. 747-756 ◽  
Author(s):  
B. Karthik ◽  
Jerald Praveen Arokkia ◽  
S. Sreejith ◽  
S. Rangarajan Shriram
Keyword(s):  
Power Systems ◽  
Transmission Lines ◽  
Power Flow ◽  
Single Phase ◽  
Load Condition ◽  
Test System ◽  
Load Flow ◽  
Static Var Compensator ◽  
Three Phase ◽  
Sequence Components

Application of Flexible AC Transmission Systems (FACTS) devices in a power system is a promising and more efficient way for the transfer and control of bulk amount of power. One of the problems encountered in power-systems operation is the generation of unbalanced voltages and currents in the presence of long transmission lines with few or no transpositions. This includes possible unbalances arising in source and load conditions, or indeed any items of plant such as shunt and series reactors. To improve or investigate these unbalance effects in any detail, a 3-phase load-flow solution that allows representation of all possible unbalances as they exist in the power-systems network without making any assumptions is essential. This paper deals with the three phase power flow incorporating Static Var Compensator (SVC). Here SVC is modeled using variable reactance modeling technique and incorporated into the single phase and three phase load flow. Newton Raphson power flow algorithm is adopted here. The performance of SVC to control the power flow and regulating voltage in the network is discussed. The performance analysis is carried out for 4 case studies namely single phase power flow, single phase power flow with SVC, three phase power flow and three phase power flow with SVC. The change in power flow and losses due to the unbalanced load condition in the three phases in illustrated. The studies are carried out in a standard 5 bus test system. Keywords: Three Phase Power flow, Static Var Compensator, Unbalanced system, Negative sequence components, Zero sequence components.

scholarly journals Electricity efficiency of auxiliary power systems in coal thermal power plant

2020 ◽  
Vol 11 (2) ◽  
pp. 101-110
Author(s):  
Azrina Mujanović ◽  
Tatjana Konjić ◽  
Adisa Dedić
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Energy Sources ◽  
Thermal Power Plants ◽  
Auxiliary Power ◽  
Generator Output

Renewable energy sources such as hydro, wind and solar energy are taking an increasing share in the electricity mix. However, electricity production from thermal power plants is independent of the weather conditions and is still important as a back-up power source to renewable energy sources. Given the fact that the electricity market is open, it is clear that each MWh is important. Therefore, auxiliary power systems as a part of thermal power plants should be also energy efficient. The main aim of the presented research was to investigate the efficient operation of different consumers in the auxiliary power system in the old-dated thermal power plant ‘’Tuzla’’ depending on different power at generator output. The performed analysis identified consumers suitable for electricity efficiency improvement giving results of power savings obtained on modestly available measurements and old-date technical documentation. Following obtained results, some recommendations for improving electricity efficiency were proposed with a rough calculation of possible savings. Measurements of auxiliary power system consumption depending on power at generator output in new thermal power plant ‘’Stanari’’ was presented. Future trends and directions in thermal power plant automation were also discussed.

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