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Start Over Search Limiters Full Text Topic 020208 electrical & electronic engineering Topic power, energy and industry applications Publication Year Range Last 10 years
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1. Adequacy of operating reserves for power systems in future european wind power scenarios

Author

Marisciel Litong-Palima, Petr Maule, Poul Ejnar Sørensen, and Kaushik Das

Subjects
Engineering, Power, Energy and Industry Applications, Meteorology, Forecast error, 020209 energy, 02 engineering and technology, 7. Clean energy, Wind speed, Electric power system, ComputerApplications_MISCELLANEOUS, 0202 electrical engineering, electronic engineering, information engineering, Real-time systems, Engineering Profession, Wind forecasting, wind generation, Wind power generation, Wind power, business.industry, Engineering profession, variability, 020208 electrical & electronic engineering, forecast error, Power system stability, operating reserves, Europe, 13. Climate action, ENTSO-E, Frequency instability, business
Abstract

Wind power generation is expected to increase in Europe by large extent in future. This will increase variability and uncertainty in power systems. Imbalances caused due to uncertainty in wind power forecast can trigger frequency instability in the system. These imbalances are handled using operating reserves. To study the effects of these imbalances, anticipated wind scenarios for European power systems are modelled for 2020 and 2030. Wind power forecasts for different time scales and real-time available wind power are modelled. Based on these studies, this paper qualitatively analyzes the adequacy of primary and secondary reserves requirements for future European power systems. This paper also discusses the challenges due to the uncertainty in wind power forecasts and their possible solutions for wind installation scenarios for 2020 and 2030.

Published
2015

2. High Dynamic Performance Nonlinear Source Emulator

Author

Khiem Nguyen-Duy, Arnold Knott, and Michael A. E. Andersen

Subjects
Engineering, Power, Energy and Industry Applications, energy resources, Testing, Transportation, Nuclear Engineering, 02 engineering and technology, Terrestrial application, Nonlinear circuits, Renewable energy sources, Electric inverters, Research and development, 0202 electrical engineering, electronic engineering, information engineering, Fuel cells, DC-DC converters, Components, Circuits, Devices and Systems, Renewable energy resources, Communication, Networking and Broadcast Technologies, Engineered Materials, Dielectrics and Plasmas, Current voltage characteristics, General Topics for Engineers, DC-DC power converters, Energy source, Fields, Waves and Electromagnetics, Maximum Power Point Tracking algorithms, High dynamic performance, Computing and Processing, Maximum power principle, Settling time, 020209 energy, Nonlinear circuit, Renewable energy source, Short-circuit currents, Capacitance, Generator (circuit theory), Batteries, Current-voltage characteristics, Downstream converters, Electronic engineering, SDG 7 - Affordable and Clean Energy, Electrical and Electronic Engineering, Aerospace, Clean energy sources, Load modeling, Power converters, Buck converter, business.industry, 020208 electrical & electronic engineering, Control engineering, Maximum power point trackers, Converters, Nonlinear system, Signal Processing and Analysis, Integrated circuit modeling, Filter (video), business
Abstract

As research and development of renewable and clean energy based systems is advancing rapidly, the nonlinear source emulator (NSE) is becoming very essential for testing of maximum power point trackers or downstream converters. Renewable and clean energy sources play important roles in both terrestrial and nonterrestrial applications. However, most existing NSEs have only been concerned with simulating energy sources in terrestrial applications, which may not be fast enough for testing of nonterrestrial applications. In this paper, a high-bandwidth NSE is developed that is able to simulate the behaviors of a typical nonlinear source under different critical conditions that can happen during their operations. The proposed 200-W NSE, which consists of a fourth-order output filter buck converter and a novel nonlinear small-signal reference generator, can quickly react not only to an instantaneous change in the input source but also to a load step between nominal and open circuit. Moreover, all of these operation modes have a very fast settling time of only 10 $\mu$ s, which is hundreds of times faster than that of existing works. This attribute allows for higher speed and a more efficient maximum power point tracking algorithm. The proposed NSE, therefore, offers a superior dynamic performance among devices of the same kind.

Published
2016