Operation and Control of Wind Farms in Non-Interconnected Power Systems
| Autor: | Ioannis Margaris, Anca Daniela Hansen, Nicolaos Antonio Cutululis, Nikos Hatziargyriou, Poul Ejnar Sørensen |
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| Přispěvatelé: | Suvire, Gastón Orlando |
| Předmět: |
Wind power measurement and integration
Wind power Power station business.industry Computer science Cost of operation Vindkraftstyring og integration Renewable energy Reliability engineering Electric power system Offshore wind power Electric power transmission Control theory Distributed generation business |
| Zdroj: | Technical University of Denmark Orbit Margaris, I, Hansen, A D, Cutululis, N A, Sørensen, P E & Hatziargyriou, N D 2011, Operation and Control of Wind Farms in Non-Interconnected Power Systems . in G O Suvire (ed.), Wind Farm-Impact in Power System and Alternatives to Improve the Integration . vol. Chapter 8, InTech . < http://www.intechopen.com/books/show/title/wind-farm-impact-in-power-system-and-alternatives-to-improve-the-integration > Wind Farm-Impact in Power System and Alternatives to Improve the Integration |
| Popis: | Autonomous power systems are characterized by the absence of interconnections with neighbouring systems due to geographical, economic and political reasons. These systems face particular problems associated with safety and reliability during the design and operation procedure associated with safety and reliability. Typical problems include large variations in frequency because of the low inertia and the large fluctuations voltage due to the low short circuit ratio. The quality of the provided electricity to consumers is threatened. At the same time, special features of non interconnected systems, such as concentration of production in a limited number of power stations, the large size of the units in relation to the load, the need for larger spinning reserve due to the absence of interconnections, and the small stability margins raise the impact on safety and cost of operation. Under these conditions, the effective handling of transient phenomena arising due to serious disorders is particularly critical. The systems should respond adequately to dynamic events and ensure static and dynamic safety. The most common faults that may cause undesired events are the loss of transmission lines, the sudden loss of load, and short circuits – especially three phase errors – and loss of production units. Based on collected operational data, incidents of loss of unit during operation are quite common and cause serious problems, therefore require special treatment. In several cases, such events have led in the past in smaller or even general black-outs. These problems are becoming more intense due to the increasing penetration of wind power in the last decade. Since renewable energy sources and particularly wind energy have stochastic behaviour, the power output is not guaranteed. This is the main factor that imposes restrictions on the expansion because in general, distributed energy sources do not contribute to the control and regulation of the system in the same way as conventional units. Another important point, which differentiates the turbines compared with conventional synchronous generators used in electric systems, is associated with the technology of converting mechanical energy into electrical. The wind turbines are in large proportion |
| Databáze: | OpenAIRE |
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