Abstract
Electronic Current Transformer (ECT) is an important equipment when constructing a major digital substation. The power supply of the ECT is intended solely for providing the DC power supply that could ensure the data collecting system's normal working. And which is the key way to ensure the reliability and accuracy of ECT. A new model of the power supply based on the characteristics of ECT is proposed: the UPS system, which utilizes a special current transformer and optical power supply as an overall. In order to fit for the urgent requirement of the digital substation, a hardware circuits is designed to realize the proposal. the research of electronic current transformer ECT attracts more and more attention.
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