current transformer according to principles can be divided into electromagnetic current transformer and the electronic current transformers. Electronic Current Transformer works by a sensor, can be divided into active and passive type optical glass type.
1 An electromagnetic current transformer electromagnetic current transformer that is achieved through the principle of electromagnetic induction current transformation of the transformer. Common current transformer saturation are mainly two types: steady state and transient saturated saturated. Which was mainly due to a steady-state saturation current value is too large to enter the current transformer saturation region, resulting in secondary current changes can not correct a current transmission. Transient saturation, it is because a large number of non-existence of periodic components, access to current transformer saturation region.
2 current transformer steady-state simulation analysis of structures in the ATP in the mode
3 current transformer current transformer secondary load transient simulation of the transient saturation resistance waveform (R = 5) from the system simulation software ATP, the use of its different element simulation of excitation current transformer steady state and transient waveform know, in the core is not saturated before the primary current and secondary current completely proportional, when saturated, the excitation is no longer increasing, saturation, does not produce EMF.
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