A novel measurement‐protection‐integrated current transformer based on hybrid core and magnetic field sensor
Zhexuan Zhang,
Baichao Chen,
Cuihua Tian
et al.
Abstract:Current transformers (CTs) are widely used for energy metering, relay protection, condition monitoring and control circuits. However, CT saturation may lead to non‐negligible measurement errors and relay malfunctions, posing a threat to the stability and security of the power grid. In order to address the problem of CT saturation, a novel measurement‐protection‐integrated current transformer (MPICT) is proposed. First, the working states of the MPICT are summarised and the approximate expressions for the stead… Show more
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