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The Transactions P of the Korean Institute of Electrical Engineers

Korean Journal of Air-Conditioning and Refrigeration Engineering

ISO Journal TitleTrans. P of KIEE
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  3. 2014-09(Vol.63 No.03)
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Title A Study on Digital Protection Algorithm of IED for Hydroelectric Generating Unit
Authors 박철원(Park, Chul-Won)
DOI https://doi.org/10.5370/KIEEP.2014.63.3.149
Page pp.149-156
ISSN 1229-800X
Keywords Anti-motoring ; Hydroelectric generating unit ; IED ; Loss of excitation ; Overexcitation ; Stator protection ; PSCAD/EMTDC
Abstract Generator of hydroelectric generating unit is to be protected by the digital protection IED. Now, any IED of large capacity for hydro power plant was not developed by domestic technology. This is because it is required for the generator of the high reliability technology and considered as due to the sale of the market of IED device is small. However, the protection IED must be develop by domestic technology to meet the advanced needs of the construction and replacement of electrical equipment in accordance with the new power plant development. In this paper, a digital algorithms for protection IED of large size of hydroelectric generating unit were designed. The algorithms consist of the stator protection, anti-motoring, overexcitation and loss of excitation. The performance of the algorithms were evaluated by using the simulation data collected from the PSCAD/EMTDC software. From test results, it can be seen that the developed algorithms were not maloperation.