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Dissertations / Theses on the topic 'Unit commitment and economic dispatch'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Cheung, Chak H. "A unified approach to unit commitment and economic dispatch in power system control." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/1155/.

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2

Orero, Shadrack Otieno. "Power systems generation scheduling and optimisation using evolutionary computation techniques." Thesis, Brunel University, 1996. http://bura.brunel.ac.uk/handle/2438/4869.

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Optimal generation scheduling attempts to minimise the cost of power production while satisfying the various operation constraints and physical limitations on the power system components. The thermal generation scheduling problem can be considered as a power system control problem acting over different time frames. The unit commitment phase determines the optimum pattern for starting up and shutting down the generating units over the designated scheduling period, while the economic dispatch phase is concerned with allocation of the load demand among the on-line generators. In a hydrothermal sy

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3

Dahal, Keshav P., S. J. Galloway, G. M. Burt, and J. R. McDonald. "Generation scheduling using genetic algorithm based hybrid techniques." IEEE, 2001. http://hdl.handle.net/10454/2598.

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The solution of generation scheduling (GS) problems involves the determination of the unit commitment (UC) and economic dispatch (ED) for each generator in a power system at each time interval in the scheduling period. The solution procedure requires the simultaneous consideration of these two decisions. In recent years researchers have focused much attention on new solution techniques to GS. This paper proposes the application of a variety of genetic algorithm (GA) based approaches and investigates how these techniques may be improved in order to more quickly obtain the optimum or ne

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4

Mihailovic, Nemanja. "A Cost Benefit Analysis of Using a Battery Energy Storage System (BESS) Represented by a Unit Commitment Model." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7548.

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This thesis aims to provide a general overview of a cost and benefit analysis of incorporating a battery energy storage system within unit commitment model. The deregulation of the electricity market in the U.S. has only been around for the last two decades. With renewable energy and energy storage systems becoming less expensive, a decentralized market scheme is becoming more popular and plausible. The scope of this work is to provide a fundamental understanding of unit commitment and a cost analysis of applying a battery energy storage system to an already established power system. A battery

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5

Nemati, Mohsen Shiralizadeh [Verfasser]. "Optimization of Unit Commitment and Economic Dispatch in Microgrids Based on Genetic Algorithm and Mixed Integer Linear Programming / Mohsen Shiralizadeh Nemati." Kassel : Kassel University Press, 2018. http://d-nb.info/1161470972/34.

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6

Sriyanyong, Pichet. "Particle swarm optimisation with applications in power system generation." Thesis, Brunel University, 2007. http://bura.brunel.ac.uk/handle/2438/4858.

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Today the modern power system is more dynamic and its operation is a subject to a number of constraints that are reflected in various management and planning tools used by system operators. In the case of hourly generation planning, Economic Dispatch (ED) allocates the outputs of all committed generating units, which are previously identified by the solution of the Unit Commitment (UC) problem. Thus, the accurate solutions of the ED and UC problems are essential in order to operate the power system in an economic and efficient manner. A number of computation techniques have progressively been

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7

Hassan, Mohamed Elhafiz. "Power Plant Operation Optimization : Unit Commitment of Combined Cycle Power Plants Using Machine Learning and MILP." Thesis, mohamed-ahmed@siemens.com, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395304.

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In modern days electric power systems, the penetration of renewable resources and the introduction of free market principles have led to new challenges facing the power producers and regulators. Renewable production is intermittent which leads to fluctuations in the grid and requires more control for regulators, and the free market principle raises the challenge for power plant producers to operate their plants in the most profitable way given the fluctuating prices. Those problems are addressed in the literature as the Economic Dispatch, and they have been discussed from both regulator and pr

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8

Bruce, Robert Alasdair Wilson. "Impacts of variable renewable generation on thermal power plant operating regimes." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/20387.

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The integration of variable renewable energy sources (VRE) is likely to cause fundamental and structural changes to the operation of future power systems. In the United Kingdom (UK), large amounts of price-insensitive and variable-output wind generation is expected to be deployed to contribute towards renewable energy and carbon dioxide (CO2) emission targets. Wind generation, with near-zero marginal costs, limited predictability, and a limited ability to provide upward dispatch, displaces price-setting thermal power plants, with higher marginal costs, changing flexibility and reserve requirem

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9

Madaeni, Seyed Hossein. "Challenges in Renewable Energy Integration." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1342628585.

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10

Leuthold, Florian U. "Economic Engineering Modeling of Liberalized Electricity Markets: Approaches, Algorithms, and Applications in a European Context." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-26135.

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This dissertation focuses on selected issues in regard to the mathematical modeling of electricity markets. In a first step the interrelations of electric power market modeling are highlighted a crossroad between operations research, applied economics, and engineering. In a second step the development of a large-scale continental European economic engineering model named ELMOD is described and the model is applied to the issue of wind integration. It is concluded that enabling the integration of low-carbon technologies appears feasible for wind energy. In a third step algorithmic work is carri

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11

Menezes, Roberto Felipe Andrade. "Programação diária da operação de sistemas termelétricos utilizando algoritmo genético adaptativo e método de pontos interiores." Universidade Federal de Sergipe, 2017. https://ri.ufs.br/handle/riufs/5036.

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Fundação de Apoio a Pesquisa e à Inovação Tecnológica do Estado de Sergipe - FAPITEC/SE<br>The growth of the electric energy consumption in the last years has generated the need of the increase in the amount of power sources, making the electricity sector undergo some large changes. This has provided the search for tools that promotes a better efficiency and security to the electrical power systems. A planning problem that is considered important in the daily operation of the power systems is the Unit Commitment, where the time schedule of the operation is defined, determining which machi

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12

Bond, S. D. "Evaluation of unit commitment techniques for the economic scheduling of thermal units." Thesis, Queen's University Belfast, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372951.

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13

Oates, David Luke. "Low Carbon Policy and Technology in the Power Sector: Evaluating Economic and Environmental Effects." Research Showcase @ CMU, 2015. http://repository.cmu.edu/dissertations/502.

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In this thesis, I present four research papers related by their focus on environmental and economic effects of low-carbon policies and technologies in electric power. The papers address a number of issues related to the operation and design of CCS-equipped plants with solvent storage and bypass, the effect of Renewable Portfolio Standards (RPS) on cycling of coal-fired power plants, and the EPA’s proposed CO2 emissions rule for existing power plants. In Chapter 2, I present results from a study of the design and operation of power plants equipped with CCS with flue gas bypass and solvent stora

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14

Zhang, Lingxi. "Techno-economic and environmental assessment of a smart multi-energy grid." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/technoeconomic-and-environmental-assessment-of-a-smart-multienergy-grid(c517bfe4-585e-4d49-bafb-d97dbfc15aa9).html.

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This PhD thesis proposes a bottom-up approach that accurately addresses the operational flexibility embedded in each part of a multi-energy system (MES). Several models which cover the simulations from replicating domestic electrified demands to power system scheduling are proposed. More specifically, a domes-tic multi-energy consumption model is firstly developed to simulate one minute resolution energy profiles of individual dwellings with the installation of prospec-tive technologies (i.e., electric heat pumps (EHPs), electric vehicles (EVs)). After-wards, a fast linear programming (LP) uni

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15

Nascimento, Flávia Rodrigues do. "Programação diária da operação de sistemas termoelétricos de geração utilizando otimização bio-inspirada em colônia de formigas." Universidade Federal de Juiz de Fora (UFJF), 2011. https://repositorio.ufjf.br/jspui/handle/ufjf/3038.

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16

Aldridge, C. J., S. McKee, J. R. McDonald, et al. "A knowledge-based genetic algorithm for unit commitment." 2001. http://hdl.handle.net/10454/3689.

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No<br>A genetic algorithm (GA) augmented with knowledge-based methods has been developed for solving the unit commitment economic dispatch problem. The GA evolves a population of binary strings which represent commitment schedules. The initial population of schedules is chosen using a method based on elicited scheduling knowledge. A fast rule-based dispatch method is then used to evaluate candidate solutions. The knowledge-based genetic algorithm is applied to a test system of ten thermal units over 24-hour time intervals, including minimum on/off times and ramp rates, and achieves lower cost

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17

Wang, Meng-xuan, and 王孟軒. "Application of Improved Bee Swarm Optimization for Day-Ahead Market Optimal Unit Commitment and Economic Dispatch." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/9yjnwc.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>104<br>The advances of renewable energy in power system not only reduced more environmental pollution than using traditional method, but provided alternative programs. As increasing of those unstable supply of green power. It will impact on the system. Such as system reliability, cost of power, power quality, power stability, etc. Therefore, how to stabilize the system while the load keep changing with ancillary service is an important issue currently. This thesis studies two case, 1th, combined thermal power generator, wind power, solar power, battery storage syst

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18

SHI, GUANG-YAN, and 施廣衍. "A lagrange relaxtion and dynamic programming approach to thermal unit commitment and economic dispatch with general state constraints." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/74844002499331996844.

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19

"Improving Deterministic Reserve Requirements for Security Constrained Unit Commitment and Scheduling Problems in Power Systems." Doctoral diss., 2015. http://hdl.handle.net/2286/R.I.29609.

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abstract: Traditional deterministic reserve requirements rely on ad-hoc, rule of thumb methods to determine adequate reserve in order to ensure a reliable unit commitment. Since congestion and uncertainties exist in the system, both the quantity and the location of reserves are essential to ensure system reliability and market efficiency. The modeling of operating reserves in the existing deterministic reserve requirements acquire the operating reserves on a zonal basis and do not fully capture the impact of congestion. The purpose of a reserve zone is to ensure that operating reserves are spr

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20

Garrison, Jared Brett. "A grid-level unit commitment assessment of high wind penetration and utilization of compressed air energy storage in ERCOT." Thesis, 2014. http://hdl.handle.net/2152/28428.

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Emerging integration of renewable energy has prompted a wide range of research on the use of energy storage to compensate for the added uncertainty that accompanies these resources. In the Electric Reliability Council of Texas (ERCOT), compressed air energy storage (CAES) has drawn particular attention because Texas has suitable geology and also lacks appropriate resources and locations for pumped hydroelectric storage (PHS). While there have been studies on incorporation of renewable energy, utilization of energy storage, and dispatch optimization, this is the first body of work to integrate

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21

Nikolakakis, Thomas. "A Mixed Integer Linear Unit Commitment and Economic Dispatch Model for Thermo-Electric and Variable Renewable Energy Generators With Compressed Air Energy Storage." Thesis, 2017. https://doi.org/10.7916/D8CN78M1.

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The objective of this PhD thesis is to create a Unit Commitment and Economic Dispatch (UCED) modelling tool that can used to simulate the deterministic performance of a power system with thermal and renewable generators and energy storage technologies. The model was formulated using mixed integer programing (MIP) on GAMS interface. A robust commercial solver by IBM (CPLEX) is used as solver. Emphasis on the development of the tool has been given on the following aspects. a) Technical impacts of Variable Renewable Energy (VRE) integration. The UCED model developed in this thesis is a high

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22

Zhao, Binyan. "Pricing and Scheduling Optimization Solutions in the Smart Grid." Thesis, 2015. http://hdl.handle.net/1828/6682.

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The future smart grid is envisioned as a large scale cyber-physical system encompassing advanced power, computing, communications and control technologies. This work provides comprehensive accounts of the application with optimization methods, probability theory, commitment and dispatching technologies for addressing open problems in three emerging areas that pertain to the smart grid: unit commitment, service restoration problems in microgrid systems, and charging services for the plug-in hybrid electric vehicle (PHEV) markets. The work on the short-term scheduling problem in renewable-pow

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23

Kim, Jong Suk. "Modeling, control, and optimization of combined heat and power plants." Thesis, 2014. http://hdl.handle.net/2152/24830.

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Combined heat and power (CHP) is a technology that decreases total fuel consumption and related greenhouse gas emissions by producing both electricity and useful thermal energy from a single energy source. In the industrial and commercial sectors, a typical CHP site relies upon the electricity distribution network for significant periods, i.e., for purchasing power from the grid during periods of high demand or when off-peak electricity tariffs are available. On the other hand, in some cases, a CHP plant is allowed to sell surplus power to the grid during on-peak hours when electricity prices

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24

Παπανικολάου, Δημήτριος. "Οικονομική λειτουργία συστήματος ηλεκτρικής ενέργειας". Thesis, 2008. http://nemertes.lis.upatras.gr/jspui/handle/10889/725.

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Σκοπός αυτής της Διπλωματικής είναι η μελέτη του προβλήματος οικονομικής κατανομής φορτίου και η μελέτη του προβλήματος ένταξης μονάδων ενός καθαρά θερμικού συστήματος. Το πρόβλημα της οικονομικής κατανομής φορτίου και της ένταξης μονάδων εξετάζονται αρχικά θεωρητικά. Στα πλαίσια αυτής της Διπλωματικής γίνεται και εφαρμογή της οικονομικής κατανομής φορτίου και της ένταξης μονάδων σ' ένα ενδεικτικό δίκτυο δοκιμών με χρήση Η/Υ. Για την οικονομική κατανομή φορτίου χρησιμοποιείται το πρόγραμμα Economic Dispatch Program και για την ένταξη μονάδων, τα προγράμματα Unit Commitment και Unitcom. Επίσης

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25

Leuthold, Florian U. "Economic Engineering Modeling of Liberalized Electricity Markets: Approaches, Algorithms, and Applications in a European Context: Economic Engineering Modeling of Liberalized Electricity Markets: Approaches, Algorithms, and Applications in a European Context." Doctoral thesis, 2009. https://tud.qucosa.de/id/qucosa%3A25185.

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This dissertation focuses on selected issues in regard to the mathematical modeling of electricity markets. In a first step the interrelations of electric power market modeling are highlighted a crossroad between operations research, applied economics, and engineering. In a second step the development of a large-scale continental European economic engineering model named ELMOD is described and the model is applied to the issue of wind integration. It is concluded that enabling the integration of low-carbon technologies appears feasible for wind energy. In a third step algorithmic work is carri

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26

Eckhoff, Bradley Dean. "Unit commitment using constrained lambda dispatch with the IBM PC." 1985. http://hdl.handle.net/2097/27433.

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27

(10653461), Veronica R. Bosquezfoti. "Distributed Optimization Algorithms for Inter-regional Coordination of Electricity Markets." Thesis, 2021.

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<p>In the US, seven regional transmission organizations (RTOs) operate wholesale electricity markets within three largely independent transmission systems, the largest of which includes five RTO regions and many vertically integrated utilities.</p> <p>RTOs operate a day-ahead and a real-time market. In the day-ahead market, generation and demand-side resources are optimally scheduled based on bids and offers for the next day. Those schedules are adjusted according to actual operating conditions in the real-time market. Both markets involve a unit commitment calculation, a mixed integer pr

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28

Cohen, Stuart Michael 1984. "A techno-economic plant- and grid-level assessment of flexible CO2 capture." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-08-6150.

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Carbon dioxide (CO₂) capture and sequestration (CCS) at fossil-fueled power plants is a critical technology for CO₂ emissions mitigation during the transition to a sustainable energy system. Post-combustion amine scrubbing is a relatively mature CO₂ capture technology, but barriers to implementation include high capital costs and energy requirements that reduce net power output by 20-30%. Capture energy requirements are typically assumed constant, but work investigates whether flexibly operating amine scrubbing systems in response to electricity market conditions can add value to CO₂ capture

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29

Ivanova, Alyona. "Techno-economic feasibility study of a photovoltaic-equipped plug-in electric vehicle public parking lot with coordinated charging." Thesis, 2018. https://dspace.library.uvic.ca//handle/1828/9420.

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In the effort to reduce the release of harmful gases associated with the transportation sector, Plug-in Electric Vehicles (PEV) have been deployed on the account of zero-tail pipe emissions. With electrification of transport it is imperative to address the electrical grid emissions during vehicle charging by motivating the use of distributed generation. This thesis employs optimal charging strategies based on solar availability and electrical grid tariffs to minimize the cost of retrofitting an existing parking lot with photovoltaic (PV) and PEV infrastructure. The optimization is cast as a un

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30

Albadi, Mohammed. "On Techno-economic Evaluation of Wind-based DG." Thesis, 2010. http://hdl.handle.net/10012/4969.

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The growing interest in small-scale electricity generation located near customers, known as Distributed Generation (DG), is driven primarily by emerging technologies, environmental regulations and concerns, electricity market restructuring, and growing customer demand for increased quality and reliability of the electricity supply. Wind turbines are one of the renewable DG technologies that have become an important source of electricity in many parts of the world. Wind power can be used in many places to provide a viable solution to rising demand, energy security and independence, and climate

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