A Saturation Detection Method of Protective Current Transformer Based on Skew Distribution
A technology of current transformers and detection methods, which is applied in the direction of instruments, measuring devices, and measuring electrical variables, etc., can solve the problems of high precision and speed, and achieve the effects of improving calculation speed, fast detection speed, and simple algorithm
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[0029] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] The invention proposes a saturation detection method of a protection current transformer based on skewed distribution, which can accurately and quickly detect the saturation of the current transformer. The whole process as Figure 7 shown in the flowchart.
[0031] Depend on figure 1 The equivalent model of the current transformer, i 1 represents the primary current flowing through the system, i 2 is the secondary side current of the current transformer, i u is the excitation current, X u is the excitation reactance, U 2 is the load terminal voltage, X a , R a are the leakage reactance and resistance of the CT secondary winding, respectively. Establish figure 2 The power system simulation model shown is a double-sided power system, and the phases on both sides are inconsistent, and a fault is...
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