SGC provided GIS/Data Management Services to client in support of the permitting and implementation of a tidal energy turbine project in eastern Maine. SGC compiled many disparate geospatial datasets provided by the client, outside contractors, and public sources into a unified system for easy viewing and analysis of the set of complex undersea and shore land datasets. The data was delivered using ArcGIS Explorer which enabled wide distribution to the entire project team in an easy to learn and use 2D/3D software/data package. In addition, SGC created and hosted a secure GIS web mapping application containing the compiled data including web access to spatial data linked documents, including spreadsheets, graphs, images, and movies of the seafloor.
In addition to the GIS services, SGC provided site planning and civil and electrical design services to support the permitting and construction the required shore station for the project. The shore station provides electrical power conditioning, data monitoring and the point of transition to the local power utility.
SGC was contacted by a general contractor that had been hired by the Mills to construct an off the grid hybrid generation system at a large sporting lodge in the 329,000 acres of the North Maine Woods. The Farm had been run on generators (or nothing) since it was constructed and used as a logging camp in 1914. The new components of the hybrid system are (2) 10 kW wind turbines, (5) 2 kW solar panels, a 30 kW inverter, automatic transfer switch, and 6600 amp/hours of batteries. These components were integrated into the existing system of 4 generators and provided with automatic voltage and kW control to maximize the life of the batteries and minimize the use of fuel. SGC’s scope consisted of evaluation of equipment and materials on site, construction of a one line diagram of the entire Farm, specifications of equipment and materials, development of a scope of work, wiring diagrams, construction coordination, commissioning and start up. SGC continues to service the Farm in an operation and maintenance capacity.
SGC provided services to replace the existing solid state Siemens Allis excitation and automatic voltage regulator systems for (2) 5 MW hydro turbines set up to run in parallel. The existing analog systems needed replacement due to failure and obsolescence. All of the controls were removed, including the power magnetics, and replaced with new Power-Tronics digital controls. As part of this project, VAR/PF control was also added to the existing control scheme.
SGC’s scope consisted of: evaluation of equipment and materials on site, confirmation of field wiring, specifications of new equipment and materials, development of a contractor scope of work, preparing new and existing wiring diagrams and schematics,
integration into the existing control scheme, construction coordination, installation, commissioning, and start up supervision. Evaluation and editing were done to the existing plant’s Modbus PLC program, using existing equipment and instrumentation.
Revitalize the VAR, Voltage, and Pond Level control schemes that allowed the site to function in an automated mode relieving the mill from having to maintain an on-site operator. Continues to service the site in an operation and maintenance capacity.