Three phase voltage measurements with simple open air sensors

E.J.M. Heesch, van, R. Caspers, P.F.M. Gulickx, G.A.P. Jacobs, W.F.J. Kersten, P.C.T. Laan, van der

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A low cost, easy to install high-voltage measuring system is described for open air substations and overhead lines. Based on the Differentiating/Integrating (D/I) principle, three free-standing capacitive pickup electrodes are used to sense the three phase to ground voltages. Apart from the individual phase aimed at, each sensor also receives a parasitic contribution from the other two phases. After integration the sensor signals therefore have to be unscrambled to recompose the original phase voltages The system has a large bandwidth, is linear and has excellent Electro-Magnetic Compatibility (EMC) properties. With its low cost, simple installation and EMC quality, the system may be incorporated easily into various applications like e.g. monitoring and line protection.
Original languageEnglish
Title of host publicationProceedings of the 7th International Symposium on High Voltage Engineering, 28-30 August 1991, Dresden, Germany
Place of PublicationDresden
PublisherTechnische Universität Dresden
Publication statusPublished - 1991


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