Steady as she blows [wind power, energy storage]
TL;DR: In this article, the authors discuss the power electronic and energy storage technologies used in wind power, and discuss the technologies that make wind power more palatable to grid operators, making it possible for engineers to finally harness wind energy's tremendous potential in wind-swept, remote locales.
Abstract: Power electronics and exotic energy storage devices are making wind power steady enough to compete with conventional electricity sources. Systems based on advanced power electronics and energy storage devices are massaging and managing power flows from wind turbines, enabling them to contribute to electricity grids without putting those grids at risk. Not only are the technologies making wind power more palatable to grid operators, they are even making it possible for engineers to finally harness wind energy's tremendous potential in wind-swept, remote locales. This article discusses the power electronic and energy storage technologies used in wind power.
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TL;DR: In this article, the authors analyzed the ability of a doubly fed induction generator (DFIG) in a wind turbine to ride through a grid fault and the limitations to its performance.
Abstract: This paper analyzes the ability of a doubly fed induction generator (DFIG) in a wind turbine to ride through a grid fault and the limitations to its performance. The fundamental difficulty for the DFIG in ride-through is the electromotive force (EMF) induced in the machine rotor during the fault, which depends on the dc and negative sequence components in the stator-flux linkage and the rotor speed. The investigation develops a control method to increase the probability of successful grid fault ride-through, given the current and voltage capabilities of the rotor-side converter. A time-domain computer simulation model is developed and laboratory experiments are conducted to verify the model and a control method is proposed. Case studies are then performed on a representatively sized system to define the feasibility regions of successful ride-through for different types of grid faults
617 citations
Cites background from "Steady as she blows [wind power, en..."
..., to ride through the faults, and contribute to system stability after fault clearance [2]....
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TL;DR: In this paper, the authors provide an economic characterization of a wind system in which long-distance electricity transmission, storage, and gas turbines are used to supplement variable wind power output to meet a time-varying load.
256 citations
Cites background from "Steady as she blows [wind power, en..."
...The effect of wind on a minute-to-minute and intra-hour timescale is an important issue, and has been investigated by Hirst (2001) and Fairley (2003)....
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...…that the cost of intrahour imbalance charges is 0.07–0:28b=kWh and the cost of regulation (AGC) due to the variable wind power is 0.005–0:030b=kWh. Fairley (2003) reports on plans to install 30–40MW of wind on the 150MW Hawaiian grid, with a combination of power electronics and advanced energy…...
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TL;DR: In this paper, a doubly-fed induction generator drive for variable speed wind power generation is described, where a wound rotor induction machine with back-to-back three phase power converter bridges between its rotor and the grid forms the electrical system.
188 citations
TL;DR: In this article, the authors compared the steady-state voltage profile and the voltage ride-through capabilities of the induction-generator-based wind farms with different reactive compensation techniques.
Abstract: World wind energy capacity expanded at an annual rate of 25% during the 1990s. The total world wind turbine installation capacity was approximately 40 000 MW at the end of 2003. Germany has the highest installed capacity of over 10 000 MW, while Denmark, where the wind energy accounts for more than 13% of electricity consumed, has the highest wind energy level per capita. The United States is catching up in the development of wind farms, with several large-scale wind generation projects currently being materialized. Even though there is significant progress in the wind generation technology, most of the currently installed wind turbines utilize induction generators to produce the electricity. Since the induction generators do not perform voltage regulation and absorb reactive power from the utility grid, they are often the source of voltage fluctuations. It is necessary to examine their responses during the faults and possible impacts on the system stability when the percentage of the wind generation increases. This paper compares the steady-state voltage profile and the voltage ride-through capabilities of the induction-generator-based wind farms with different reactive compensation techniques.
137 citations