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Special Instrument Transformers for Renewable Energy and Rural Electrification

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Abstract

This paper presents the solutions provided by Station Service Voltage Transformer (SSVT) for applications in renewable energy and rural electrification. A SSVT is a special hybrid type of instrument transformer product with features of a high voltage inductive voltage transformer and a distribution transformer to offer a compact, reliable power source. Using SSVT for renewable applications, e.g. wind and solar, can provide a reliable, convenient source of control power for independent operations in remote areas. For rural electrification application, SSVT serves as a mini-substation, stepping down the power supply directly from the high voltage transmission line to low voltage or medium voltage output in one step to provide power source to small residential areas without the large investment, meanwhile reduce the required space and shorten the time duration for construction of a typical substation. ABB has delivered many SSVT products both oil and SF6 in substations around the world. Many of them are used for the above-mentioned applications which are recommended for wide use in the future grid.

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