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Disaggregating Time Series Data for Energy Consumption by Aggregate and Individual Customer

Disaggregating Time Series Data for Energy Consumption by Aggregate and Individual Customer
Author: Steven Vitullo
Publisher:
Total Pages:
Release: 2010
Genre: Linear programming
ISBN:

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This dissertation generalizes the problem of disaggregating time series data and describes the disaggregation problem as a mathematical inverse problem that breaks up aggregated (measured) time series data that is accumulated over an interval and estimates its component parts. We describe five different algorithms for disaggregating time series data: the Naive, Time Series Reconstruction (TSR), Piecewise Linear Optimization (PLO), Time Series Reconstruction with Resampling (RS), and Interpolation (INT). The TSR uses least squares and domain knowledge of underlying correlated variables to generate underlying estimates and handles arbitrarily aggregated time steps and non-uniformly aggregated time steps. The PLO performs an adjustment on underlying estimates so the sum of the underlying estimated data values within an interval are equal to the aggregated data value. The RS repeatedly samples a subset of our data, and the fifth algorithm uses an interpolation to estimate underlying estimated data values. Several methods of combining these algorithms, taken from the forecasting domain, are applied to improve the accuracy of the disaggregated time series data. We evaluate our component and ensemble algorithms in three different applications: disaggregating aggregated (monthly) gas consumption into disaggregated (daily) gas consumption from natural gas regional areas (operating areas), disaggregating United States Gross Domestic Product (GDP) from yearly GDP to quarterly GDP, and forecasting when a truck should fill a customer's heating oil tank. We show our five algorithms successfully used to disaggregate historical natural gas consumption and GDP, and we show combinations of these algorithms can improve further the magnitude and variability of the natural gas consumption or GDP series. We demonstrate that the PLO algorithm is the best of the Naive, TSR, and PLO algorithms when disaggregating GDP series. Finally, ex-post results using the Naive, TSR, PLO, RS, INT, and the ensemble algorithms when applied to forecast heating oil deliveries are shown. Results show the Equal Weight (EW) combination of the Naive, TSR, PLO, RS, and INT algorithms outperforms the forecasting system Company YOU used before approaching the gasdayTM laboratory at Marquette University, and comes close, but does not outperform existing techniques the GasDayTM laboratory has implemented to forecast heating oil deliveries.


Residential Energy Consumption Across Housing Vintages

Residential Energy Consumption Across Housing Vintages
Author: Thanh C. Dang
Publisher:
Total Pages: 140
Release: 2016
Genre:
ISBN:

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Using econometric modeling, this study examines a cross-section of disaggregate data collected through the Residential Appliance Saturation Survey for over 10,000 California single-family households and produces a set of estimates for variations in electricity and natural gas consumption for houses built at different times.


Disaggregation of Residential Home Energy Via Non-intrusive Load Monitoring for Energy Savings and Targeted Demand Response

Disaggregation of Residential Home Energy Via Non-intrusive Load Monitoring for Energy Savings and Targeted Demand Response
Author: Jeremy B. Hare
Publisher:
Total Pages: 61
Release: 2018
Genre:
ISBN:

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Residential energy disaggregation is a process by which the power usage of a home is broken down into the consumption of individual appliances. There are a number of different methods to perform energy disaggregation, from simulation models to installing "smart-plugs" at every outlet where an appliance is connected to the wall. Non-Intrusive Load Monitoring (NILM) is one such disaggregation option. NILM is widely recognized as one of the most cost-effective methods for gathering disaggregated energy data while maintaining a high level of accuracy. Although the technology has existed for many years, the adoption rate of NILM, and other devices that disaggregate energy, has been minimal. This thesis provides details on the potential benefits, both for the customer and utility provider, associated with furthering the adoption of NILM devices and obtaining the disaggregated appliance level energy-use. A broad overview of potential benefits is presented; however, the primary goal of this thesis will be to investigate two benefits of NILM in detail: overall household energy reduction and targeted demand response. First, installation of a NILM device can provide electricity customers information that allows them to become more aware of their energy consumption, and thereby, more energy efficient. A study was conducted that looked at the electricity consumption of 174 homes that were using a passive NILM device in their home. This NILM device provided immediate feedback on the power consumption for a portion of the home's appliances via smart-phone application. The homes reduced their monthly energy consumption by an average of 2.6 - 3.1% after the NILM installation. This was validated by a number of analysis methods returning similar results. Aligned with this benefit comes a recommendation for an incentive structure that can reduce the price paid by the consumer and develop a higher adoption rate of NILM devices. Second, the wide-spread adoption of NILM devices can provide electric utilities information to reduce carbon intensity via targeted demand response. There is a significant opportunity for utilities to engage their customers based on the time of use of detailed appliances. Multiple metrics are presented in this thesis to quantify the deferrable load opportunity of specific appliances and individual households. Utility operational cost savings and greater customer incentives can be linked to the use of these metrics.


Smart Cities

Smart Cities
Author: Sergio Nesmachnow
Publisher: Springer
Total Pages: 301
Release: 2020-01-05
Genre: Computers
ISBN: 9783030388881

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This book constitutes the thoroughly refereed proceedings of the Second Ibero-American Congress, ICSC-CITIES 2019, held in Soria, Spain, in October 2019. The 22 full papers presented were carefully reviewed and selected from 98 submissions. The papers focus on Energy Efficiency and Sustainability; Infrastructures, Energy and the Environment; Mobility and Internet of Things; and Governance and Citizenship.


Advances in Energy Systems

Advances in Energy Systems
Author: Peter D. Lund
Publisher: John Wiley & Sons
Total Pages: 576
Release: 2019-04-29
Genre: Science
ISBN: 1119508282

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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.


The Unequal Benefits of Fuel Subsidies

The Unequal Benefits of Fuel Subsidies
Author: Mr.David Coady
Publisher: International Monetary Fund
Total Pages: 25
Release: 2010-09-01
Genre: Business & Economics
ISBN: 145520532X

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This paper reviews evidence on the impact of fuel subsidy reform on household welfare in developing countries. On average, the burden of subsidy reform is neutrally distributed across income groups; a $0.25 decrease in the per liter subsidy results in a 6 percent decrease in income for all groups. More than half of this impact arises from the indirect impact on prices of other goods and services consumed by households. Fuel subsidies are a costly approach to protecting the poor due to substantial benefit leakage to higher income groups. In absolute terms, the top income quintile captures six times more in subsidies than the bottom. Issues that need to be addressed when undertaking subsidy reform are also discussed, including the need for a new approach to fuel pricing in many countries.