Author: M. Milligan
Publisher:
ISBN:
Category : Electric power consumption
Languages : en
Pages : 95

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
In the Western Interconnection, there is significant interest in improving approaches to wide-area coordinated operations of the bulk electric power system, in part because of the increasing penetration of variable generation. One proposed solution is an energy imbalance market. This study focused on that approach alone, with the goal of identifying the potential benefits of an energy imbalancemarket in the year 2020.

Author:
Publisher:
ISBN:
Category : Distributed resources (Electric utilities)
Languages : en
Pages : 100

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Book Description
The anticipated increase in variable generation in the Western Interconnection (WI) over the next several years has raised concerns about how to maintain system balance, especially in smaller Balancing Areas (BAs). Given renewable portfolio standards in the West, it is possible that more than 50 gigawatts (GW) of wind capacity will be installed by 2020. Significant quantities of solar generation are likely to be added as well. The consequent increase in variability and uncertainty that must be managed by the conventional generation fleet and responsive load make it attractive to consider ways in which Balancing Area Authorities (BAAs) can pool their variability and response resources, thus taking advantage of geographic and temporal diversity to increase overall operational efficiency. Our analysis considers several alternative forms of an Energy Imbalance Market (EIM) that have been proposed in the non-market areas of the WI. The proposed EIM includes two changes in operating practices that independently reduce variability and increase access to responsive resources: BAA cooperation and sub-hourly dispatch. As proposed, the EIM does not consider any form of coordinated unit commitment; however, over time it is possible that BAAs would develop formal or informal coordination plans. This report examines the benefits of several possible EIM implementations, both separately and in concert.

Author:
Publisher:
ISBN:
Category : Electric power distribution
Languages : en
Pages : 75

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Book Description
This paper considers several alternative forms of an energy imbalance market (EIM) proposed in the nonmarket areas of the Western Interconnection. The proposed EIM includes two changes in operating practices that independently reduce variability and increase access to responsive resources: balancing authority cooperation and sub-hourly dispatch. As the penetration of variable generation increases on the power system, additional interest in coordination would likely occur. Several alternative approaches could be used, but consideration of any form of coordinated unit commitment is beyond the scope of this analysis. This report examines the benefits of several possible EIM implementations--both separately and in concert.

Author:
Publisher:
ISBN:
Category : Electric power distribution
Languages : en
Pages :

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Author: Pengwei Du
Publisher: Springer
ISBN: 3319555812
Category : Technology & Engineering
Languages : en
Pages : 345

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Book Description
This book outlines the challenges that increasing amounts of renewable and distributed energy represent when integrated into established electricity grid infrastructures, offering a range of potential solutions that will support engineers, grid operators, system planners, utilities, and policymakers alike in their efforts to realize the vision of moving toward greener, more secure energy portfolios. Covering all major renewable sources, from wind and solar, to waste energy and hydropower, the authors highlight case studies of successful integration scenarios to demonstrate pathways toward overcoming the complexities created by variable and distributed generation.

Author: Vivek Bhandari
Publisher: John Wiley & Sons
ISBN: 1119793513
Category : Science
Languages : en
Pages : 404

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Book Description
Modern Electricity Systems Awarded “The Best Book for Energy Engineers” by The American Energy Society 2023 A welcome textbook instructing on many current aspects of energy generation, transmission, distribution, and consumption The importance of a well-informed group of individuals in charge of energy production and use is essential to create a sustainable and greener tomorrow. Technologies and costs are rapidly changing, and environmental goals widely debated in this book. The future of energy is at a crossroads. In addition, energy and technology poverty affects as much as 25% of the world’s population. Having the correct set of “tools”—a basic understanding of modern electrical systems—is essential, not just for engineers but for our leaders and decision-makers. With decades of experience in industry and academia behind them, the team of authors in Modern Electricity Systems offers a “toolbox” from which the reader will learn what is essential to make informed decisions. As such, this textbook provides an introduction to the fundamentals of how electricity is generated, financed, regulated, rationed, and stored – with consideration not just of the current status of these issues but a glance at what the next decade may hold. Without this basic level of comprehension, the growing global impact and social issues can be discussed and advocated for, but real change in this sector can only be achieved through understanding the systems. Modern Electricity Systems readers will also find: Support to create a course on energy transition and energy policy for sustainable development International modern day case studies, that represent the most current and essential topics, to illustrate key concepts, as well as ones focused on the United States Sample problem sets that bring together essential ideas learned from each chapter A textbook written by a team of working professionals with international experience in real-world applications of policy, engineering, and operations Modern Electricity Systems is a helpful reference for graduate and advanced undergraduate students and researchers, policymakers, environmentalists, humanitarians, business leaders, and decision-makers in all three sectors of electricity operations, engineering, and policy matters.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
A region-wide Energy Imbalance Market (EIM) was recently proposed by the Western Electricity Coordinating Council (WECC). In order for the Western Area Power Administration (Western) to make more informed decisions regarding its involvement in the EIM, Western asked Argonne National Laboratory (Argonne) to review the EIM benefits study (the October 2011 revision) performed by Energy and Environmental Economics, Inc. (E3). Key components of the E3 analysis made use of results from a study conducted by the National Renewable Energy Laboratory (NREL); therefore, we also reviewed the NREL work. This report examines E3 and NREL methods and models used in the EIM study. Estimating EIM benefits is very challenging because of the complex nature of the Western Interconnection (WI), the variability and uncertainty of renewable energy resources, and the complex decisions and potentially strategic bidding of market participants. Furthermore, methodologies used for some of the more challenging aspects of the EIM have not yet matured. This review is complimentary of several components of the EIM study. Analysts and modelers clearly took great care when conducting detailed simulations of the WI using well-established industry tools under stringent time and budget constraints. However, it is our opinion that the following aspects of the study and the interpretation of model results could be improved upon in future analyses. The hurdle rate methodology used to estimate current market inefficiencies does not directly model the underlying causes of sub-optimal dispatch and power flows. It assumes that differences between historical flows and modeled flows can be attributed solely to market inefficiencies. However, flow differences between model results and historical data can be attributed to numerous simplifying assumptions used in the model and in the input data. We suggest that alternative approaches be explored in order to better estimate the benefits of introducing market structures like the EIM. In addition to more efficient energy transactions in the WI, the EIM would reduce the amount of flexibility reserves needed to accommodate forecast errors associated with variable production from wind and solar energy resources. The modeling approach takes full advantage of variable resource diversity over the entire market footprint, but the projected reduction in flexibility reserves may be overly optimistic. While some reduction would undoubtedly occur, the EIM is only an energy market and would therefore not realize the same reduction in reserves as an ancillary services market. In our opinion the methodology does not adequately capture the impact of transmission constraints on the deployment of flexibility reserves. Estimates of flexibility reserves assume that forecast errors follow a normal distribution. Improved estimates could be obtained by using other probability distributions to estimate up and down reserves to capture the underlying uncertainty of these resources under specific operating conditions. Also, the use of a persistence forecast method for solar is questionable, because solar insolation follows a deterministic pattern dictated by the sun's path through the sky. We suggest a more rigorous method for forecasting solar insolation using the sun's relatively predictable daily pattern at specific locations. The EIM study considered only one scenario for hydropower resources. While this scenario is within the normal range over the WI footprint, it represents a severe drought condition in the Colorado River Basin from which Western schedules power. Given hydropower's prominent role in the WI, we recommend simulating a range of hydropower conditions since the relationship between water availability and WI dispatch costs is nonlinear. Also, the representation of specific operational constraints faced by hydropower operators in the WI needs improvements. The model used in the study cannot fully capture all of the EIM impacts and complexities of power system operations. In particular, a primary benefit of the EIM is a shorter dispatch interval; namely, 5 minutes. However, the model simulates the dispatch hourly. Therefore it cannot adequately measure the benefits of a more frequent dispatch. A tool with a finer time resolution would significantly improve simulation accuracy. When the study was conducted, the rules for the EIM were not clearly defined and it was appropriate to estimate societal benefits of the EIM assuming a perfect market without a detailed specification of the market design. However, incorporating a more complete description of market rules will allow for better estimates of EIM benefits. Furthermore, performing analyses using specific market rules can identify potential design flaws that may be difficult and expensive to correct after the market is established. Estimated cost savings from a more efficient dispatch are less than one percent of the total cost of electricity production.

Author:
Publisher:
ISBN:
Category : Electric power distribution
Languages : en
Pages :

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Author: Albert Sabban
Publisher: BoD – Books on Demand
ISBN: 180356833X
Category : Technology & Engineering
Languages : en
Pages : 198

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Book Description
Green computing involves developing, designing, engineering, producing, using, and disposing of computing modules and devices to reduce environmental hazards and pollution. Green computing technologies are crucial for protecting the planet from environmental hazards and pollution. This book presents new subjects and innovations in green computing technologies and in green computing and electronics industries. Chapters address such topics as green wearable sensors, variable renewable energy, managing energy consumption using the Internet of Things (IoT) and big data, using forest waste to produce biofuel and biodiesel, green computing in ophthalmological practice, and much more.