Effect Of Generation Flexibility On The Operating Cost With High Penetration Of Renewable Energy In Taiwan
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Effect Of Generation Flexibility On The Operating Cost With High Penetration Of Renewable Energy In Taiwan
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Author : 黃思儒
language : en
Publisher:
Release Date : 2019
Effect Of Generation Flexibility On The Operating Cost With High Penetration Of Renewable Energy In Taiwan written by 黃思儒 and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Future Electricity Systems Challenges And Current Trends Ncefes 2021
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Author : Institution of Engineers (Jodhpur Local Center)
language : en
Publisher: Allied Publishers
Release Date : 2022-06-13
Future Electricity Systems Challenges And Current Trends Ncefes 2021 written by Institution of Engineers (Jodhpur Local Center) and has been published by Allied Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-13 with Technology & Engineering categories.
This book features selected papers from the 36th National Convention of Electrical Engineers and Conference on “Future Electricity Systems: Challenges and Current Trends” (NCEFES-2021) held in hybrid mode by Institution of Engineers Jodhpur Local Centre, Jodhpur, India, during 27-28 November, 2021. The book features original papers presented by graduate students, research scholars, academicians, and industry persons during this conference. The topics covered in the book include recent advances in Distributed generation and Power quality, Optimization techniques, Renewable energy/Alternative energy, Reliability of distributed energy systems, Smart microgrid, Advanced monitoring & novel control strategies, Real-time simulation & contingencies analysis, Ancillary services & metering, Economic benefits, Application of machine learning, Data acquisition, Internet of Things (IOT), Load forecasting, Future electricity systems, Integration of communication technology, Blockchain technology & its application in Energy systems, Cloud computing for energy, Cyber physical energy systems, Renewable energy grid integration, Smart protection techniques for electrical distribution network, Recent developments in electrical technology for sustainable smart cities and energy management.
Impact Of Generator Flexibility On Electric System Costs And Integration Of Renewable Energy
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Author :
language : en
Publisher:
Release Date : 2014
Impact Of Generator Flexibility On Electric System Costs And Integration Of Renewable Energy written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Flexibility of traditional generators plays an important role in accommodating the increased variability and uncertainty of wind and solar on the electric power system. Increased flexibility can be achieved with changes to operational practices or upgrades to existing generation. One challenge is in understanding the value of increasing flexibility, and how this value may change given higher levels of variable generation. This study uses a commercial production cost model to measure the impact of generator flexibility on the integration of wind and solar generators. We use a system that is based on two balancing areas in the Western United States with a range of wind and solar penetrations between 15% and 60%, where instantaneous penetration of wind and solar is limited to 80%.
Coordinated Operation Of Distributed Energy Resources In Renewables Based Microgrids Under Uncertainties
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Author : Walied Alharbi
language : en
Publisher:
Release Date : 2013
Coordinated Operation Of Distributed Energy Resources In Renewables Based Microgrids Under Uncertainties written by Walied Alharbi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
In recent years, the share of renewable energy sources (RESs) has been increasing in the electricity generation mix with a mandate to reduce greenhouse gas emissions that are released from burning fossil fuels. Indeed, a large share of electricity from renewable resources is required to de-carbonize the electricity sector. With the evolution of smart grids and microgrids, effective and efficient penetration of renewable generation such as wind and solar can possibly be attained. However, the intermittent nature of wind and solar generation makes microgrid operation and planning a complex problem and there is a need for a flexible grid to cope with the variability and uncertainty in their generation profiles. This research focuses on the coordination of distributed energy resources, such as energy storage systems (ESSs) and demand response (DR) to present an efficient solution towards improving the flexibility of microgrids, and supporting high levels of renewables generation. The overall goal of this research is to examine the influence of coordinated operation of ESS and DR on microgrid operations in the presence of high penetration levels of renewable generation. Deterministic and stochastic short-term operational planning models are developed to analyze the effects of coordinating ESS and DR, vis-à-vis their independent operation, on microgrids with high renewable generation. Special focus is on operation costs, scheduling and dispatching of controllable distributed generators, and levels of renewable generation. A set of valid probabilistic scenarios is considered for the uncertainties of load, and intermittency in wind and solar generation sources. The numerical results considering a benchmark microgrid indicate that coordinated operation of ESS and DR is beneficial in terms of operation costs, vis-à-vis their independent presence in the microgrid, when there is sufficient renewable generation. The coordinated operation reduces the risk in scheduling and increases the flexibility of the microgrid in supporting high levels of renewable generation.
Advances In Energy Systems
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Author : Peter D. Lund
language : en
Publisher: John Wiley & Sons
Release Date : 2019-02-05
Advances In Energy Systems written by Peter D. Lund and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-05 with Science categories.
A guide to a multi-disciplinary approach that includes perspectives from noted experts in the energy and utilities fields Advances in Energy Systems offers a stellar collection of articles selected from the acclaimed journal Wiley Interdisciplinary Review: Energy and Environment. The journalcovers all aspects of energy policy, science and technology, environmental and climate change. The book covers a wide range of relevant issues related to the systemic changes for large-scale integration of renewable energy as part of the on-going energy transition. The book addresses smart energy systems technologies, flexibility measures, recent changes in the marketplace and current policies. With contributions from a list of internationally renowned experts, the book deals with the hot topic of systems integration for future energy systems and energy transition. This important resource: Contains contributions from noted experts in the field Covers a broad range of topics on the topic of renewable energy Explores the technical impacts of high shares of wind and solar power Offers a review of international smart-grid policies Includes information on wireless power transmission Presents an authoritative view of micro-grids Contains a wealth of other relevant topics Written forenergy planners, energy market professionals and technology developers, Advances in Energy Systems is an essential guide with contributions from an international panel of experts that addresses the most recent smart energy technologies.
Understanding How Generation Flexibility And Renewable Energy Affect Power Market Competition
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Author : Majid Al-Gwaiz
language : en
Publisher:
Release Date : 2016
Understanding How Generation Flexibility And Renewable Energy Affect Power Market Competition written by Majid Al-Gwaiz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
We study supply function competition among conventional power generators with different levels of flexibility. Inflexible generators commit production before uncertainties are realized, while flexible generators can adjust their production after uncertainties are realized. Both types of generators compete in an electricity market by submitting supply functions to a system operator, who solves a two-stage stochastic program to determine the production level for each generator and the corresponding market prices in the first and second stages. Our goal is to gain an understanding of how generators' (in)flexibility affects their equilibrium behavior and the market price. We also investigate the impact of intermittent renewable power generation on the equilibrium, focusing on the effects of renewable energy penetration level, dispatch priority, and production-based subsidies. We find that the classic supply function equilibrium model overestimates the intensity of the market competition, and even more so as renewable energy introduces more intermittency into the system. The policy of economically curtailing intermittent generation intensifies the market competition, reduces price volatility, and improves the system's overall efficiency. Moreover, we show that these benefits are most significant when the production-based subsidies are absent.
Impact Of Generator Flexibility On Electric System Costs And Integration Of Renewable Energy
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Author : D. Palchak
language : en
Publisher:
Release Date : 2014
Impact Of Generator Flexibility On Electric System Costs And Integration Of Renewable Energy written by D. Palchak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Coal-fired power plants categories.
Flexibility of traditional generators plays an important role in accommodating the increased variability and uncertainty of wind and solar on the electric power system. Increased flexibility can be achieved with changes to operational practices or upgrades to existing generation. One challenge is in understanding the value of increasing flexibility, and how this value may change given higher levels of variable generation. This study uses a commercial production cost model to measure the impact of generator flexibility on the integration of wind and solar generators. We use a system that is based on two balancing areas in the Western United States with a range of wind and solar penetrations between 15% and 60%, where instantaneous penetration of wind and solar is limited to 80%.
Integrating Variable Renewable Energy On Electricity Grids Through A Multi Scaled Energy Modelling Approach
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Author : Madeleine Myrna McPherson
language : en
Publisher:
Release Date : 2017
Integrating Variable Renewable Energy On Electricity Grids Through A Multi Scaled Energy Modelling Approach written by Madeleine Myrna McPherson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
The global wind and solar PV industry has transitioned from a subsidy-dependent niche market to a commercially viable sector that is dominating global capacity expansions. However, integrating these renewable energy resources, with their variable nature, onto the electricity grid poses new challenges for system operations. This thesis explores variable renewable energy (VRE) integration, through multiple scales of energy modelling and analysis from the integrated assessment model MESSAGE, to the country-scale electricity system model LEAP, and the production cost model introduced in this work entitled SILVER. The MESSAGE and LEAP models have large-scale, long-term representations of the energy system that enable analysis of alternative energy policies, cross-sector environmental impacts, and overarching cost trends, but do not have the spatial-temporal resolution to represent site-specific, variable VRE generation profiles. Thus, SILVER, for the Strategic Integration of Large-capacity Variable Energy Resources, is designed as a highly flexible production cost dispatch tool. Technologically, SILVER represents the full gamut of grid balancing strategies: building flexible and dispatchable generation assets, interconnecting geographically dispersed resources and VRE types, shifting flexible loads through demand response, shifting generation profiles through storage technologies, curtailing excess generation, interconnecting the electricity sector with the transport sector, and improving VRE forecasting methodologies. SILVER relies on hourly wind and solar generation time-series data, produced by the newly developed GRETA (Global Renewable Energy Atlas Time) tool, which has been launched as an open access web-portal. SILVER is applied to three VRE integration applications: moving towards a fully-renewable Ontario electricity system including 87% VRE penetration, demand response, electric vehicles, storage assets, and an expanded transmission network; quantifying storage asset commercial viability in electricity systems with different flexibility factors, VRE penetrations, and financial remuneration mechanisms; and exploring the role of decentralized generation and electric vehicles at a city-scale in a developing country context. The results demonstrate the highly system-specific nature of VRE integration, with the VRE resource typology, the non-VRE system flexibly, VRE penetration, and degree of VRE centralization having significant impacts. The interdependence between these electricity system factors in terms of curtailment rates, GHG emissions, electricity system costs, and flexibility requirements recommends an integrated planning approach.
Integrating Renewable Generation Into Grid Operations Four International Experiences
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Author :
language : en
Publisher:
Release Date : 2016
Integrating Renewable Generation Into Grid Operations Four International Experiences written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
International experiences with power sector restructuring and the resultant impacts on bulk power grid operations and planning may provide insight into policy questions for the evolving United States power grid as the electric power systems around the world are responding to a multitude of factors including changing resource mixes and fuel prices, an aging generation fleet with potentially large retirements of baseload generation and numerous policies designed to meet climate goals. Australia, Germany, Japan and the UK were selected to represent a range in the attributes of electricity industry liberalization in order to draw comparisons across a variety of regions in the United States such as California, ERCOT, the Southwest Power Pool and the Southeast Reliability Region. The study draws conclusions through a literature review of the four case study countries with regards to the changing resource mix and the electricity industry sector structure and their impact on grid operations and planning. This paper derives lessons learned and synthesizes implications for the United States based on the challenges faced by the four selected countries. Each country was examined to determine the challenges to their bulk power sector based on their changing resource mix, market structure, policies driving the changing resource mix, and policies driving restructuring. Each country's approach to solving those challenges was examined, as well as how each country's market structure either exacerbated or mitigated the approaches to solving the challenges to their bulk power grid operations and planning. All countries' policies encourage renewable energy generation. To date, relatively high levels of variable renewable generation have been incorporated with few challenges. However, one significant finding included the Low/zero fuel cost of variable renewables and its potential negative impact on long-term resource adequacy. No dominant solution has emerged although a capacity market was introduced in the UK and is being contemplated in Japan. Germany has proposed the Energy Market 2.0 to encourage flexible generation investment. In Australia interconnections to other regions provide added opportunities for balancing that would not be available otherwise, and at this point, has allowed for integration of renewables.
Flexibility Provisions From Energy Hubs For Sustainable Energy Systems
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Author : Walied Alharbi
language : en
Publisher:
Release Date : 2018
Flexibility Provisions From Energy Hubs For Sustainable Energy Systems written by Walied Alharbi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Power systems have some inherent level of flexibility built into the system, to meet the continuous mismatches between the supply and demand. Variability and uncertainty are not new to power systems as loads change over time and generators can fail in unpredictable manners. Penetration of renewable resources and plug in electric vehicles (PEVs) can make this mismatch even more difficult to meet and new flexibility resources will be needed to supplement the flexibility capabilities of the existing system. There are many options to provide flexibility at the distribution system level, but their potential have not been fully utilized. This thesis addresses some of the pertinent issues relating to flexibility provisions from energy hubs. In the first research problem, an electric vehicle charging facility (EVCF) is transformed to operate as a smart energy hub in order to build its flexibility provision. The EVCF demand mostly occurs during the evening, coinciding with the peak demand, and has no flexibility because of the short stay of PEVs at the charging facility. From the system planner's and operator's point of view, such transformation of the EVCF presents a new source of flexibility to the distribution system, which could alleviate network stress and defer upgrades, and the transformation to a smart energy hub will also reduce the EVCF's operating costs through improved energy management. A generic and novel framework is proposed to optimally design and plan an EVCF as a smart energy hub that controls the energy flow between the renewables-based generation units, the battery energy storage system (BESS), the external grid, and local consumption. The proposed framework is based on a bottom-up approach to design and planning of an EVCF, incorporating a detailed representation of vehicle mobility statistics to estimate the charging load profile, and then integrating all dimensions of planning, such as technical feasibility assessment, economics, and distribution system operations impact assessment. The thesis further presents a new mathematical model to design an EVCF with distributed energy resources (DERs) to provide flexibility services in wind integrated power grids. Two different ownership structures of the EVCF and the wind generation facility (WGF) are presented and analyzed for the first time. The DER options considered for the EVCF design are solar photovoltaic (PV) units and BESS. The effects of wind power uncertainty on power system operations are mitigated through the designed EVCF with DERs via the upward and downward flexibility provisions. Monte Carlo simulations are used to simulate the uncertainties in PV and wind generation, and market price. In the third research problem, residential loads are transformed to residential energy hubs (REHs) to develop an inherent flexibility in their portfolios, and hence offer a wide range of benefits to the power grid, such as peak reduction, congestion relief and capacity deferral. A generic and novel framework is proposed, to simultaneously determine the optimal penetration of REHs in distribution systems and the optimal incentives to be remunerated by the local distribution company (LDC) to residential customers for flexibility provisions, considering economic benefits of both parties. The proposed framework models the relationship between the participation of residential customers in transforming their houses to REHs and the incentives to be offered by the LDC. A new concept of unloaded and loaded states of REHs is also introduced for quantifying the power availability of REHs, from which power flexibility can be provided considering the penetration of REHs in the system.