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Tuesday, August 26, 2008

Technical Performance of an Electric Cooperative supplied with Wind Power

Wind power supply has further implications on system reliability because of its variability and can impact power quality in its nature of power production since it uses power electronics for power control that can produce harmonics and with its variability which can result to unacceptable voltage variations and voltage flickers. Ilocos Norte Electric Cooperative (INEC) source its power supply at specific times from the NorthWind Power Development Corporation.

INEC sources its power requirement to supply its franchise demand from National Power Corporation (NPC), NorthWind and Wholesale Electricity Spot Market (WESM). This is an economic operations strategy by INEC. INEC is fed by all these power suppliers from the grid via bulk power transformers to its distribution franchise.

National Electrification Administration (NEA) reports Electric Cooperatives (EC) scorecard for the year 2006. From this report, INEC performs very well technically as shown in the figure below. Aside from reliability and project implementation, INEC performed up to the expected par with all the other technical operations performance requirements. The uncoupling of power supply, voltage transformation thru transformers which go together with INEC’s own technical intervention within their distribution franchise, from the wind power to the INEC distribution system aids in delivering power with such a high quality of supply and technical performance. Overall, the analysis shows that an electric distribution system fed by a wind power plant can be operated up to the level of technical criteria required by the NEA or by Energy Regulatory Commission (ERC).

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