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- W1981509887 abstract "Current transformer (CT) is an important transmission equipment in power systems. DC bias and remnant flux can change the working point of CT in the core magnetization curve and has a direct impact on the accuracy of electric energy metering and measurement. The simulation circuit model is built by using the simulation software PSCAD and the change of ratio error, phase displacement and exciting current with DC bias and remnant flux are analyzed. The results show that DC bias and remnant flux will both increase the ratio error and phase displacement in opposite directions and the error size will be far more than the limit value when DC bias and remnant flux exist in same direction at the same time. Furthermore, the existence of DC bias and remnant flux will also cause the raise of exciting current size, asymmetry of exciting current waveform and appearance of even harmonics. This will seriously affect the transmission accuracy of measuring CT." @default.
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- W1981509887 date "2013-09-01" @default.
- W1981509887 modified "2023-09-23" @default.
- W1981509887 title "Influence of DC Bias and Remnant Flux on Measuring Current Transformers" @default.
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- W1981509887 doi "https://doi.org/10.4028/www.scientific.net/amr.765-767.2268" @default.
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