The Smart Grid, regarded as the next generation power grid, uses two-way flows of electricity and information to create a widely distributed automated energy delivery network. In this article, we survey the literature till 2011 on the enabling technologies for the Smart Grid. We explore three major systems, namely the smart infrastructure system, the smart management system, and the smart protection system. We also propose possible future directions in each system. colorred{Specifically, for the smart infrastructure system, we explore the smart energy subsystem, the smart information subsystem, and the smart communication subsystem.} For the smart management system, we explore various management objectives, such as improving energy efficiency, profiling demand, maximizing utility, reducing cost, and controlling emission. We also explore various management methods to achieve these objectives. For the smart protection system, we explore various failure protection mechanisms which improve the reliability of the Smart Grid, and explore the security and privacy issues in the Smart Grid.

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Smart Grid — The New and Improved Power Grid: A Survey

Smart Grid - The New and Improved Power Grid:

http://ieeexplore.ieee.org/iel5/5610941/5624686/05624745.pdf

Power electronics

1 Introduction 2 Electromagnetic Transients 3 Synchronous Machine Modeling 4 Synchronous Machine Control Models 5 Single-Machine Dynamic Models 6 Multimachine Dynamic Models 7 Multimachine Simulation 8 Small-Signal Stability 9 Energy Function Methods Appendix A: Integral Manifolds for Model Bibliography Index

Power System Dynamics and Stability

Energy is an essential ingredient of socio-economic development and economic growth. Renewable energy sources like wind energy is indigenous and can help in reducing the dependency on fossil fuels. Wind is the indirect form of solar energy and is always being replenished by the sun. Wind is caused by differential heating of the earth's surface by the sun. It has been estimated that roughly 10 million MW of energy are continuously available in the earth's wind. Wind energy provides a variable and environmental friendly option and national energy security at a time when decreasing global reserves of fossil fuels threatens the long-term sustainability of global economy. This paper reviews the wind resources assessment models, site selection models and aerodynamic models including wake effect. The different existing performance and reliability evaluation models, various problems related to wind turbine components (blade, gearbox, generator and transformer) and grid for wind energy system have been discussed. This paper also reviews different techniques and loads for design, control systems and economics of wind energy conversion system.

A review of wind energy technologies

Application of modal transformations for power system harmonic impedance measurement

This paper presents a new harmonic power flow method for the AC/DC converters. The method is based on a unique model for the AC/DC converters. The model transforms the time domain nonlinear characteristics of the converter into a frequency domain linear admittance matrix. The matrix represents the coupling among the converter AC side harmonic voltages and currents accurately. An interesting feature of this model is that its elements do not vary with the harmonic voltage conditions of the system. As a result, a non-iterative harmonic power flow algorithm is developed with the model. Case studies show that the model can be further simplified without significant loss of accuracy, which leads to an even simpler harmonic power flow algorithm.

A non-iterative harmonic power flow method for accurate harmonic calculations

A singular value decomposition-based technique for decoupling and analyzing power networks

Interharmonic components can often be seen from the discrete Fourier transform (DFT) results of measured voltage or current waveforms. These components may be caused by various factors, such as transient waveform distortions or noises. They are not necessarily related to the real interharmonics. This letter presents a simple method to verify the existence of a genuine interharmonic component contained in the DFT results. The method can also reveal the characteristics of the component. The method has been demonstrated on various field measurement data that contain genuine and false interharmonic components.

http://www.ece.ualberta.ca/~apic/papers/Power_Quality/2012-A%20Method%20to%20Determine%20the%20Existence%20of%20Genuine%20Interharmonics.pdf

A Method to Determine the Existence of Genuine Interharmonics

A new AC/AC multilevel converter topology suitable for high power applications is presented. The proposed topology has less number of IGBT switches and capacitors compared with traditional approaches. In addition, more than half of the switches are operating in soft switching condition, which considerably decreases the switching losses. The theoretical calculations and simulation results are provided to verify the feasibility of the proposed topology.

Wilsun Xu

Papers

Application of modal transformations for power system harmonic impedance measurement

A non-iterative harmonic power flow method for accurate harmonic calculations

A singular value decomposition-based technique for decoupling and analyzing power networks

A Method to Determine the Existence of Genuine Interharmonics

A bidirectional AC/AC multilevel converter