Design and Engineering for Smart Secondary Substation Automation Panel
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This M.Sc. thesis presents a systematic approach to enhance automation at the electrical distribution level by introducing multiple retrofit approaches in existing secondary substations. This study has explored insights into providing intelligence to the secondary substation efficiently in terms of dimensions, cost and communication needs. The designing of a retrofit product has been accomplished taking into consideration the current network status, the present need and the future compatibility for Smart Grid. Although, the new device has been designed based on the Finnish network need, it is fully compatible with electrical networks worldwide. Initially a comprehensive review of the theory and literature related to present network configuration, distribution automation, Smart Grids and all relevant areas was conducted. This was followed by a review of the reports of transmission and distribution networks operators in Finland and product brochures from various manufacturers in order to create a framework. This was complemented and further verified by the primary collection of data in the form of interviews and discussions with representatives from these companies. Based on all this information, the operation within the network was emulated and the final product was designed. The product provides practical capabilities from the basic monitoring to the full automated control with decision making capabilities locally or remotely through the network control centre via SCADA. Being customizable and retrofit installation, its adaptability and scalability is based on the specific network need. Besides, as the product has been developed in the form a detailed research through collaboration with university researchers, product manufacturers as well as network operators, it is practically designed and is planned to be implemented soon. Although, there are other similar but less effective and less flexible products available, they lose advantage when it comes to compatibility. The research represents one of the first attempts to design a customizable product for the medium voltage level network automation and the retrofit approach with its modular and scalable feature provides originality to it.