The installation of renewable energy sources to satisfy the electricity needs of isolated systems has a lot of potential benefits. Power generation is often demanded to small Diesel units with high generating costs: fuel supply and maintenance are often expensive phases in the chain of power generation; noise and air pollution can be a major constraint in a tourism based economy. Besides islands are likely to have a good wind potential. The overall reliability of island power systems is low if compared to the mainland and blackouts are not so rare events. The installation of renewable resources must therefore not get the situation worse and, if possible, improve the continuity and quality of supply. In fact, power fluctuations, which characterize renewable sources (wind, solar), can be very large compared to the system load, and the loss of a wind turbine due to any event (a fault or a wind gust) might cause the system to collapse. Today, electricity customers are becoming more sensitive to the power quality level and high standards are required also in the smallest systems. Therefore, on the grid side, the connection of renewable energy sources to small isolated systems requires that stability and coordination aspects be faced and solved. The maximum acceptable level of renewable sources depends on the solutions chosen for ensuring a good integration and no standard solutions exist. Wind turbine controlling schemes and storage systems can play a major role towards higher levels of renewables.
Integration of wind generation in small isolated systems: the case of Giglio Island
BARSALI, STEFANO;GIGLIOLI, ROMANO;
2005-01-01
Abstract
The installation of renewable energy sources to satisfy the electricity needs of isolated systems has a lot of potential benefits. Power generation is often demanded to small Diesel units with high generating costs: fuel supply and maintenance are often expensive phases in the chain of power generation; noise and air pollution can be a major constraint in a tourism based economy. Besides islands are likely to have a good wind potential. The overall reliability of island power systems is low if compared to the mainland and blackouts are not so rare events. The installation of renewable resources must therefore not get the situation worse and, if possible, improve the continuity and quality of supply. In fact, power fluctuations, which characterize renewable sources (wind, solar), can be very large compared to the system load, and the loss of a wind turbine due to any event (a fault or a wind gust) might cause the system to collapse. Today, electricity customers are becoming more sensitive to the power quality level and high standards are required also in the smallest systems. Therefore, on the grid side, the connection of renewable energy sources to small isolated systems requires that stability and coordination aspects be faced and solved. The maximum acceptable level of renewable sources depends on the solutions chosen for ensuring a good integration and no standard solutions exist. Wind turbine controlling schemes and storage systems can play a major role towards higher levels of renewables.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
