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As the deployment of wind and solar technologies increases at an unprecedented rate across the United States and in many world markets, the variability of power output from these technologies expands the need for increased power system flexibility. Energy storage can play an important role in the transition to a more flexible power system that can accommodate high penetrations of variable renewable technologies. This project focuses on how ternary pumped storage hydropower (T-PSH) coupled with dynamic transmission can help this transition by defining the system-wide benefits of deploying this technology in specific U.S. markets. T-PSH technology is the fastest responding pumped hydro technology equipment available today for grid services. T-PSH efficiencies are competitive with lithium-ion (Li-ion) batteries, and T-PSH can provide increased storage capacity with minimal degradation during a 50-year lifetime. This project evaluates T-PSH for grid services ranging from fast frequency response (FFR) for power system contingency events and enhanced power system stability to longer time periods for power system flexibility to accommodate ramping from wind and solar variability and energy arbitrage. In summary, this project: Compares power grid services and costs, including ancillary services and essential reliability services, for T-PSH and conventional pumped storage hydropower (PSH) - Evaluates the dynamic response of T-PSH and PSH technologies and their contribution to essential reliability services for grid stability by developing new power system model representations for T-PSH and performing simulations in the Western Interconnection - Evaluates production costs, operational impacts, and energy storage revenue streams for future power system scenarios with T-PSH focusing on time frames of 5 minutes and more - Assesses the electricity market-transforming capabilities of T-PSH technology coupled with transmission monitoring and dynamic control. This paper presents an overview of the methodology and initial, first-year preliminary findings of a 2-year in-depth study into how advanced PSH and dynamic transmission contribute to the transformation and modernization of the U.S. electric grid. This project is part of the HydroNEXT Initiative funded by the U.S. Department of Energy (DOE) that is focused on the development of innovative technologies to advance nonpowered dams and PSH. The project team consists of the National Renewable Energy Laboratory (project lead), Absaroka Energy, LLC (Montana-based PSH project developer), GE Renewable Energy (PSH pump/turbine equipment supplier), Grid Dynamics, and Auburn University (lead for NREL/Auburn dynamic modeling team).
Sustainable Energy Planning in Smart Grids curates a diverse selection of innovative technological applications for problem-solving towards a sustainable smart grid. Through these examples, the reader will discover the flexibility and analytical skills required for the race towards reliable, resilient, renewable energy. This book’s combination of real-world case studies allows students and researchers to understand the complex, interdisciplinary systems that impact potential solutions. Detailed analysis highlights the positives and drawbacks of a variety of options, modeling considerations, and criteria for success. Trials and testing include electric vehicle charging, public lighting, energy mapping, heating solutions, and a proposal for 100% renewable cities. With contributions from a global range of experts, this book builds the complex picture of integrated, systemic modern energy planning. Collects case studies from experts around the world Presents readers with insights into current technological applications and innovations for building a sustainable grid and energy system Provides well-rounded, complex context to these interdisciplinary challenges
Pumped Hydro Energy Storage for Hybrid Systems takes a practical approach to present characteristic features, planning and implementation aspects, and techno-economic issues of PHES. It discusses the importance of pumped hydro energy storage and its role in load balancing, peak load shaving, grid stability and hybrid energy systems deployment. The book analyses the architecture and process description of different kinds of PHES, both established and upcoming. Different case studies of pumped hydro energy storage are discussed as well as the advantages and disadvantages of different applications. An essential read for students, researchers and engineers interested in renewable energy, hydropower, and hybrid energy systems. Provides a comprehensive overview of pumped-hydro storage systems and other uses of hydropower in hybrid energy systems Offers a practical approach that includes case studies to present in-depth information on project development and techno-economic challenges, including design, costs, performance and limitations of hybrid pumped hydro systems Explores pathways for hydropower energy storage systems optimization for better electricity generation
Many of the products and services on the electrical grid are currently provided by the conventional power plants, however the response time from conventional power plants is slow compared to hydropower. Similarly, some services such as spinning reserve can be provided by modern renewable generation (wind or PV), however the renewable generation must be curtailed down, thus there is loss of opportunity to harvest clean energy while operating in spinning reserve mode. On the other hand, Adjustable Speed - Pumped Storage Hydropower (AS-PSH) can readily perform these functions while pumping or generating, thus also taking benefit of energy arbitrage which can increase system efficiency. This paper will present results from production cost models showing the effect of adding AS-PSH 50 MW in size to three regional ISO areas which have different ancillary service markets available and different generation mixes. The benefits to these market areas from the ancillary services that can be provided by the AS-PSH and also the load shifting benefits will be measured with cost savings and additional system flexibility in the day-ahead and real-time markets. The main metrics to provide this insight will be savings in the total system production cost and in variable renewable energy curtailment respectively. The simulated operation of the additional hydropower will be analyzed to determine the breakdown of system cost reduction by ancillary services provided and load shifting.
Introductory technical guidance for civil, mechanical and electrical engineers interested in hydroelectric pumped storage projects. Here is what is discussed: 1. INTRODUCTION 2. GENERAL CHARACTERISTICS OF OFF-STREAM PUMPED-STORAGE PROJECTS 3. OVERALL STUDY PROCEDURE 4. SEQUENTIAL ROUTING STUDIES 5. ECONOMIC ANALYSIS 6. ANALYSIS OF PUMP-BACK PROJECTS 7. SOCIAL PROBLEMS.
Introductory technical guidance for professional engineers interested in pumped storage hydroelectric power plants. Here is what is discussed: 1. INTRODUCTION, 2. GENERAL CHARACTERISTICS OF OFF-STREAM, PUMPED-STORAGE PROJECTS, 3. OVERALL STUDY PROCEDURE, 4. SEQUENTIAL ROUTING STUDIES, 5. ECONOMIC ANALYSIS, 6. ANALYSIS OF PUMP-BACK PROJECTS, 7. SOCIAL PROBLEMS.