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WE Energies of Wisconsin. The microturbine and facility completed several tests which now allow the microturbine to run in parallel with the city’s utility company. This was a significant step for the microturbine team. Because of the parallel connection, the City of Milwaukee will have the potential to save money through economic dispatch, while at the same time reducing the building’s need to fire up the hot water boilers to meet a thermal demand. An ongoing task of the project is the use of a webcam. The webcam is located in front of the microturbine and is used to record pictures of the microturbine on a two minute interval. The pictures are sent to the project webpage, and the webpage updates every two minutes as the webcam takes a new picture of the microturbine. The files of each picture are also saved onto the server. Every two weeks the space allocated to the project begins to fill up and the files need to be saved to a compact disk for permanent storage. All the files for one day are zipped up into a single file. The new zip files are then copied onto a laptop and the files on the server are deleted to create more room for incoming files. The zip files are then extracted into a folder. Blaze Media Converter software is used to convert the list of *.jpg files into a *.mpg movie for the particular day. Approximately two weeks worth of *.mpg files are saved to a disk and kept in permanent storage. These movie files are used for reliability, availability, and maintainability studies, and also to help troubleshoot any data irregularities. One of the main electrical duties is to continue to collect data on the Yokogawa Power Meter data logger. During the first phase of the demonstration project, two of the three hall-effect current sensors were damaged during installation. Since then several options were examined to replace the damaged devices. It was decided that four shunts were to be installed in place of the hall-effect sensors. The shunts are rated 200 Amp at 50 mV. Three of the shunts will be used for the 3-phase signal and the other shunt will be used for the DC signal. All of the shunts are made by Yokogawa so they are compatible with the Power Meter. Once the shunts were installed and thought to be working properly, the data logger was used to record data. The data can be put into three different formats: numeric, waveform, and numeric and waveform. Data were recorded from the Yokogawa while the microturbine was running at different load levels. For example, files were collected for the microturbine running at approximately 0kW, 10kW, 20kW, 30kW, 40kW, 45kW, 50 kW, 55 kW, and 60 kW. Two other tasks that have been completed during the second phase of the project are programming of the OPTO 22 data logger and the PMII power monitor. The original OPTO 22 was replaced by an upgraded model. The set-points for the upgraded model, called the Ultimate Brain, needed to be reprogrammed. These set-points inform the OPTO of the lower and upper limits for each sensor or transducer that is wired to it. Once the set-points were programmed, the OPTO was able to send the correct data to the Engage website for viewing and trending. The PMII also needed programming. The PMII monitors the power quantity of the energy supplied from the microturbine. The PMII needed to be programmed to send an alarm if the IEEE 519 Standard is violated in any way. The alarm is sent to the Engage website, and emails are dispatched to certain people working on the project. Proceedings of the 2004 American Society of Engineering Education Annual Conference & Exposition Copyright © 2004, American Society for Engineering EducationPDF Image | A 60-kW Microturbine Demonstration Facility Phase II: Instrumentation, Website Development, and Evaluation
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