This paper presenta the nxxdts of an investigation regarding the electrical performance characteristics of a new, three-phase, 480 volt (L-L), 30 kW, micro-turbine generator and its suitability as an electrical power source for applications at the electrical power distribution voltage level. This unit is tiled by naturrd gas and may be used as a dispersed generation source. The unit was purchased by the local utility company and given to the University of Nevada, Reno for the investigation. The Electical Machine and the Power System Laboratory was used to perform the study.Testing was performed at several load set-point levels. For each level, the micro-turbine speedj exit temperature, inlet temperature and pressure, inverter currents, inverter phase to neutral voltages, inverter single phase and three-phase power were recorded. Also, results of noise, pollutio~etliciency, and harmonic measurements for the micro-turbime are presented. The investigation includes the turbine behavior under a weak system that consists of the micro-turbine, a variable three-phase load, and a three-phase 15 kVA synchronous machine in the laboratory. The speed of this machine is controlled by a fbzzy logic algorithm. Conclusions are made regarding the suitability of the unit as a distributed generation source.
Matching the availability of wind energy with customer demand is difficult for several reasons. The location of the resource, which may be remote or lacking transmission capacity, may not match the load. Also, the times when wind energy is available might not correlate with peak customer demand. Finally, there is a price difference between firm and non-firm transmission. In this paper, we discuss solar and wind resources regarding (a) assessment of intermittency, (b) available options for backfilling intermittent resources, (c) assessment of tariff solutions for accommodating intermittent resources, and (d) location mismatch issue.
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