Generation of Electric Power
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Power Quality Evaluation for Electrical Installation of Hospital Building
(IJACSA) International Journal of Advanced Computer Science and Applications, Vol. 10, No. 12, 2019 Power Quality Evaluation for Electrical Installation of Hospital Building Agus Jamal1, Sekarlita Gusfat Putri2, Anna Nur Nazilah Chamim3, Ramadoni Syahputra4 Department of Electrical Engineering, Faculty of Engineering Universitas Muhammadiyah Yogyakarta Yogyakarta, Indonesia Abstract—This paper presents improvements to the quality of Considering how vital electrical energy services are to power in hospital building installations using power capacitors. consumers, good quality electricity is needed [11]. There are Power quality in the distribution network is an important issue several methods to correct the voltage drop in a system, that must be considered in the electric power system. One namely by increasing the cross-section wire, changing the important variable that must be found in the quality of the power feeder section from one phase to a three-phase system, distribution system is the power factor. The power factor plays sending the load through a new feeder. The three methods an essential role in determining the efficiency of a distribution above show ineffectiveness both in terms of infrastructure and network. A good power factor will make the distribution system in terms of cost. Another technique that allows for more very efficient in using electricity. Hospital building installation is productive work is by using a Bank Capacitor [12]. one component in the distribution network that is very important to analyze. Nowadays, hospitals have a lot of computer-based The addition of capacitor banks can improve the power medical equipment. This medical equipment contains many factor, supply reactive power so that it can maximize the use electronic components that significantly affect the power factor of complex power, reduce voltage drops, avoid overloaded of the system. -
Trends in Electricity Prices During the Transition Away from Coal by William B
May 2021 | Vol. 10 / No. 10 PRICES AND SPENDING Trends in electricity prices during the transition away from coal By William B. McClain The electric power sector of the United States has undergone several major shifts since the deregulation of wholesale electricity markets began in the 1990s. One interesting shift is the transition away from coal-powered plants toward a greater mix of natural gas and renewable sources. This transition has been spurred by three major factors: rising costs of prepared coal for use in power generation, a significant expansion of economical domestic natural gas production coupled with a corresponding decline in prices, and rapid advances in technology for renewable power generation.1 The transition from coal, which included the early retirement of coal plants, has affected major price-determining factors within the electric power sector such as operation and maintenance costs, 1 U.S. BUREAU OF LABOR STATISTICS capital investment, and fuel costs. Through these effects, the decline of coal as the primary fuel source in American electricity production has affected both wholesale and retail electricity prices. Identifying specific price effects from the transition away from coal is challenging; however the producer price indexes (PPIs) for electric power can be used to compare general trends in price development across generator types and regions, and can be used to learn valuable insights into the early effects of fuel switching in the electric power sector from coal to natural gas and renewable sources. The PPI program measures the average change in prices for industries based on the North American Industry Classification System (NAICS). -
Overview of Electric Power Supply Systems
Overview of Electric Power Supply Systems Why are electric power systems studied? What are the characteristics of power systems that justify spending a whole course on them? There are many answers to each of these questions; this course will touch on a few of them. You will recall that ECE370 gave an overview of the circuit theory associated with electrical power and it is worth recalling that most power systems are three-phase and that when balanced systems are being analyzed these are usually drawn in terms of a one-line diagram, i.e. a single line is used to denote the three phases, which may or may not also have a neutral. The US Electric Power System The main aspects that describe power systems are: size, complexity and economic impact. Utility power systems cover vast territory, are subject to the whims of nature, are interconnected to each other, the quality of their commodity affects the ability of industry to produce effectively, and the price of their commodity has a significant impact on the economy of their service area. Controlling power systems requires that electricity be supplied at the correct frequency, satisfactory voltage, with its phases balanced, have low harmonic content, and with all protection systems coordinated. The foregoing has to be achieved without overloading equipment and at the lowest cost to the consumer (after the utility makes a reasonable profit.) All this is complicated by the fact that demand for electricity changes throughout the day (and week, and season) and that electricity can not be readily stored in a practical manner. -
Energy Storage for Power Systems Applications: a Regional Assessment for the Northwest Power Pool (NWPP)
PNNL-19300 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Energy Storage for Power Systems Applications: A Regional Assessment for the Northwest Power Pool (NWPP) MCW Kintner-Meyer MAElizondo PJ Balducci VV Viswanathan C Jin X Guo TB Nguyen FK Tuffner April 2010 PNNL-19300 Energy Storage for Power Systems Applications: A Regional Assessment for the Northwest Power Pool (NWPP) M Kintner-Meyer M Elizondo P Balducci V Viswanathan C Jin X Guo T Nguyen F Tuffner April 2010 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Funded by the Energy Storage Systems Program of the U.S. Department of Energy Dr. Imre Gyuk, Program Manager Pacific Northwest National Laboratory Richland, Washington 99352 Abstract This report addresses several key questions in the broader discussion on the integration of renewable energy resources in the Pacific Northwest power grid. Specifically, it addresses the following questions: a) what will be the future balancing requirement to accommodate a simulated expansion of wind energy resources from 3.3 GW in 2008 to 14.4 GW in 2019 in the Northwest Power Pool (NWPP), and b) what are the most cost effective technological solutions for meeting the balancing requirements in the Northwest Power Pool (NWPP). A life-cycle analysis was performed to assess the least-cost technology option for meeting the new balancing requirement. The technologies considered in this study include conventional turbines (CT), sodium sulfur (NaS) batteries, Lithium Ion (Li-ion) batteries, pumped-hydro energy storage (PH), and demand response (DR). Hybrid concepts that combine 2 or more of the technologies above are also evaluated. -
Electric Power Generation and Distribution
ATP 3-34.45 MCRP 3-40D.17 ELECTRIC POWER GENERATION AND DISTRIBUTION JULY 2018 DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. This publication supersedes TM 3-34.45/MCRP 3-40D.17, 13 August 2013. Headquarters, Department of the Army Foreword This publication has been prepared under our direction for use by our respective commands and other commands as appropriate. ROBERT F. WHITTLE, JR. ROBERT S. WALSH Brigadier General, USA Lieutenant General, USMC Commandant Deputy Commandant for U.S. Army Engineer School Combat Development and Integration This publication is available at the Army Publishing Directorate site (https://armypubs.army.mil) and the Central Army Registry site (https://atiam.train.army.mil/catalog/dashboard). *ATP 3-34.45 MCRP 3-40D.17 Army Techniques Publication Headquarters No. 3-34.45 Department of the Army Washington, DC, 6 July 2018 Marine Corps Reference Publication Headquarters No. 3-40D.17 Marine Corps Combat Development Command Department of the Navy Headquarters, United States Marine Corps Washington, DC, 6 July 2018 Electric Power Generation and Distribution Contents Page PREFACE.................................................................................................................... iv INTRODUCTION .......................................................................................................... v Chapter 1 ELECTRICAL POWER ............................................................................................. 1-1 Electrical Power Support to Military Operations -
Cogeneration in Louisiana 2005
COGENERATION IN LOUISIANA AN UPDATED (2005) TABULATION OF INDEPENDENT POWER PRODUCER (IPP) AND COGENERATION FACILITIES Prepared by David McGee/Patty Nussbaum THE TECHNOLOGY ASSESSMENT DIVISION T. Michael French, P. E. Director William J. Delmar, Jr. P. E. Assistant Director LOUISIANA DEPARTMENT OF NATURAL RESOURCES SCOTT A. ANGELLE SECRETARY Baton Rouge June, 2006 COGENERATION IN LOUISIANA AN UPDATED (2005) TABULATION OF INDEPENDENT POWER PRODUCER (IPP) AND COGENERATION FACILITIES Prepared by David McGee/Patty Nussbaum THE TECHNOLOGY ASSESSMENT DIVISION T. Michael French, P. E. Director William J. Delmar, Jr. P. E. Assistant Director LOUISIANA DEPARTMENT OF NATURAL RESOURCES SCOTT A. ANGELLE SECRETARY Baton Rouge June, 2006 This issue of Cogeneration in Louisiana, (2005) is funded 100% with Petroleum Violation Escrow Funds as part of the State Energy Conservation Program as approved by the U. S. Department of Energy and the Department of Natural Resources. This report is only available in an electronic format on the World Wide Web. Most materials produced by the Technology Assessment Division of the Louisiana Department of Natural Resources, are intended for the general use of the citizens of Louisiana, and are therefore entered into the public domain. You are free to reproduce these items with reference to the Division as the source. Some items included in our publication are copyrighted either by their originators or by contractors for the Department. To use these items it is essential you contact the copyright holders for permission before you reuse these materials TABLE OF CONTENTS COGENERATION IN LOUISIANA UPDATE (2005) Page no. LIST OF TABLES ii LIST OF FIGURES iii LIST OF EXHIBITS iv ABBREVIATIONS AND CODES v-vii BACKGROUND 1 IMPACT OF 2005 HURRICANE SEASON IN LOUISIANA 3 COGENERATION IN LOUISIANA 5 THE ENERGY POLICY ACT OF 2005 7 CONCLUSION 9 ABBREVIATIONS AND ACRONYSMS 10 GLOSSARY 11-13 SELECTED BIBLIOGRAPHY 14 EXHIBITS LIST OF TABLES PAGE Table 1 Potential Benefits of Distributed Generation 7 Table 2. -
History of Electric Energy Systems and New Evolution - Yanoush B
ELECTRICAL ENERGY SYSTEMS - History of Electric Energy Systems and New Evolution - Yanoush B. Danilevich, B. E. Kirichenko And N. N. Tikhodeev HISTORY OF ELECTRIC ENERGY SYSTEMS AND NEW EVOLUTION Yanoush B. Danilevich Division for Basic Researches in Electrical Power Engineering, Department of Physical and Technical Problems of Energetics, Russian Academy of Sciences, Russia B. E. Kirichenko Division for Basic Researches in Electric Power Engineering, Russian Academy of Sciences (RAS), St.-Petersburg, Russia N. N. Tikhodeev High Voltage Technology Department, HVDC Power Transmission Research Institute, St. Petersburg, Russia Keywords: Armature, electric generator, electric machine, electric power station, electrical energy end user, electrical energy production, electromagnetic processes, hydrogenerator, induction motor, inductor, interconnected power system, power station unit, power system, transmission lines, turbogenerator Contents 1. Introduction: Electrical Energy 2. History and Recent Progress of Electric Motors and Generators 3. History and Recent Progress of Electric Power Generation 3.1. Role of Electric Power Generation in the Present Fuel and Energy Complex 3.2. Electric Power Stations Today 3.3. Electric Generators for Thermal, Hydraulic and Nuclear Power Stations 4. History and Recent Progress of Electric Power Systems and Their Utilization 4.1. Early History of Electric Station Pooling 4.2. Structure of a State-of-the-art Electric Power System 4.3. Reasons for Connection of Electric Stations into Power Systems 4.4. Interconnection of Power Systems for Synchronous Operation 4.5. Asynchronous Operation of Interconnected Power Systems 4.6. International Interconnected Power Systems 5. Distributed Generation - the New Tendencies UNESCO – EOLSS Summary During the XXSAMPLE century modern power system sCHAPTERS with all necessary equipment have been created and the problems of power transmission were solved. -
Power Flow on AC Transmission Lines
Basics of Electricity Power Flow on AC Transmission Lines PJM State & Member Training Dept. PJM©2014 7/11/2013 Objectives • Describe the basic make-up and theory of an AC transmission line • Given the formula for real power and information, calculate real power flow on an AC transmission facility • Given the formula for reactive power and information, calculate reactive power flow on an AC transmission facility • Given voltage magnitudes and phase angle information between 2 busses, determine how real and reactive power will flow PJM©2014 7/11/2013 Introduction • Transmission lines are used to connect electric power sources to electric power loads. In general, transmission lines connect the system’s generators to it’s distribution substations. Transmission lines are also used to interconnect neighboring power systems. Since transmission power losses are proportional to the square of the load current, high voltages, from 115kV to 765kV, are used to minimize losses PJM©2014 7/11/2013 AC Power Flow Overview PJM©2014 7/11/2013 AC Power Flow Overview R XL VS VR 1/2X 1/2XC C • Different lines have different values for R, XL, and XC, depending on: • Length • Conductor spacing • Conductor cross-sectional area • XC is equally distributed along the line PJM©2014 7/11/2013 Resistance in AC Circuits • Resistance (R) is the property of a material that opposes current flow causing real power or watt losses due to I2R heating • Line resistance is dependent on: • Conductor material • Conductor cross-sectional area • Conductor length • In a purely resistive -
Electric Power Grid Modernization Trends, Challenges, and Opportunities
Electric Power Grid Modernization Trends, Challenges, and Opportunities Michael I. Henderson, Damir Novosel, and Mariesa L. Crow November 2017. This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 United States License. Background The traditional electric power grid connected large central generating stations through a high- voltage (HV) transmission system to a distribution system that directly fed customer demand. Generating stations consisted primarily of steam stations that used fossil fuels and hydro turbines that turned high inertia turbines to produce electricity. The transmission system grew from local and regional grids into a large interconnected network that was managed by coordinated operating and planning procedures. Peak demand and energy consumption grew at predictable rates, and technology evolved in a relatively well-defined operational and regulatory environment. Ove the last hundred years, there have been considerable technological advances for the bulk power grid. The power grid has been continually updated with new technologies including increased efficient and environmentally friendly generating sources higher voltage equipment power electronics in the form of HV direct current (HVdc) and flexible alternating current transmission systems (FACTS) advancements in computerized monitoring, protection, control, and grid management techniques for planning, real-time operations, and maintenance methods of demand response and energy-efficient load management. The rate of change in the electric power industry continues to accelerate annually. Drivers for Change Public policies, economics, and technological innovations are driving the rapid rate of change in the electric power system. The power system advances toward the goal of supplying reliable electricity from increasingly clean and inexpensive resources. The electrical power system has transitioned to the new two-way power flow system with a fast rate and continues to move forward (Figure 1). -
Public Citizen, Inc. List of Witnesses and Documents
UNITED STATES OF AMERICA 1 Before the 1 SECURITIES AND EXCHANGE COMMISSIO DEC 8 3 2004 ) In the Matter of ) I 1 I AMERICAN ELECTRIC POWER COMPANY, INC. ) Administrative Proceeding ) File No. 3-1 1616 ) PUBLIC CITIZEN, INC. LIST OF WITNESSES AND DOCUMENTS Pursuant to the Scheduling Order of the Presiding Administrative Law Judge, Public Citizen, Inc. ("Public Citizen") hereby submits its list of witnesses and documents to be submitted in the above-captioned proceeding. Witnesses 1. Public Citizen plans to submit testimony of Mi-. Jack A. Casazza, President of the American Education Institute, as an electric utility system expert witness His curriculum vita is attached. Mr. Casazza will testify regarding current transmission programs of the Federal Energy Regulatory Commission ("FERC"), including RTOs, and the extent to which they have, or have not, changed the operations of electric utility systems in ways relevant to the provisions of the Public Utility Holding Company Act of 1935 at issue in this proceeding. 2. Public Citizen plans to submit testimony by Ms. Lynn N. Hargis, former FERC Assistant General Counsel for Electric Rates and Corporate Regulation and thirty-year practitioner under the Federal Power Act, on the statutory differences between the Federal Power Act and the Public Utility Holding Company Act of 1935, to refute the proposed testimony of applicant, American Electric Power Company, that this Commission may rely on actions and deregulatory programs of the FERC in enforcing the provisions of the Public Utility Holding Company Act.. 3. Public Citizen reserves the right to call Mr. David B. Smith, Division of Investment Management-as an adverse witness, if necessary. -
Guide to Power Factor POWER QUALITY
Reactive Power and Harmonic Compensation Guide to Power Factor POWER QUALITY A unity power factor of 1.0 (100%), can be considered ideal. However, for most users of electricity, power factor is usually less than 100%, which means the electrical power is not eff ectively utilized. This ineffi ciency can increase the cost of Understanding Power Factor the user’s electricity, as the energy or electric utility company There are many objectives to be pursued in planning an transfers its own excess operational costs on to the user. Bill- electrical system. In addition to safety and reliability, it is very ing of electricity is computed by various methods, which may important to ensure that electricity is properly used. Each also aff ect costs. circuit, each piece of equipment, must be designed so as to From the electric utility’s view, raising the average operating guarantee the maximum global effi ciency in transforming the power factor of the network from .70 to .90 means: source of energy into work. Among the measures that enable electricity use to be optimized, improving the power factor of reducing costs due to losses in the network electrical systems is undoubtedly one of the most important. increasing the potential of generation production and distribution of network operations To quantify this aspect from the utility company’s point, it is This means saving hundreds of thousands of tons of fuel (and a well-known fact that electricity users relying on alternating emissions), hundreds of transformers becoming available, and current – with the exception of heating elements – to absorb not having to build power plants and their support systems. -
Thermal Energy Storage for Grid Applications: Current Status and Emerging Trends
energies Review Thermal Energy Storage for Grid Applications: Current Status and Emerging Trends Diana Enescu 1,2,* , Gianfranco Chicco 3 , Radu Porumb 2,4 and George Seritan 2,5 1 Electronics Telecommunications and Energy Department, University Valahia of Targoviste, 130004 Targoviste, Romania 2 Wing Computer Group srl, 077042 Bucharest, Romania; [email protected] (R.P.); [email protected] (G.S.) 3 Dipartimento Energia “Galileo Ferraris”, Politecnico di Torino, 10129 Torino, Italy; [email protected] 4 Power Engineering Systems Department, University Politehnica of Bucharest, 060042 Bucharest, Romania 5 Department of Measurements, Electrical Devices and Static Converters, University Politehnica of Bucharest, 060042 Bucharest, Romania * Correspondence: [email protected] Received: 31 December 2019; Accepted: 8 January 2020; Published: 10 January 2020 Abstract: Thermal energy systems (TES) contribute to the on-going process that leads to higher integration among different energy systems, with the aim of reaching a cleaner, more flexible and sustainable use of the energy resources. This paper reviews the current literature that refers to the development and exploitation of TES-based solutions in systems connected to the electrical grid. These solutions facilitate the energy system integration to get additional flexibility for energy management, enable better use of variable renewable energy sources (RES), and contribute to the modernisation of the energy system infrastructures, the enhancement of the grid operation practices that include energy shifting, and the provision of cost-effective grid services. This paper offers a complementary view with respect to other reviews that deal with energy storage technologies, materials for TES applications, TES for buildings, and contributions of electrical energy storage for grid applications.