Through-flow device for large transformer
A technology for transformers and transformer bushings, applied in the field of transformers, can solve the problems of inaccurate results, insufficient measurement accuracy, and small secondary side current.
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Embodiment 1
[0036] The large-scale transformer current-through device in the embodiment of the present application is used for a transformer of 500kV and above, and a current transformer CT is arranged inside the transformer bushing, and the primary side of the current transformer CT is arranged in the primary side circuit of the transformer. see figure 1 , figure 1 It is a schematic structural diagram of a large-scale transformer flow-through device provided in the embodiment of the present application. figure 1 It can be seen that the large-scale transformer current-through device mainly includes a power supply 1, a switch 2, and a capacitor 3 connected in series in sequence. The capacitor 3 is connected in series with the primary side of the transformer, and the capacitor 3 is used to form series resonance in the series circuit.
[0037] Furthermore, since the conductive rod on the primary side of the transformer runs through the inside of the transformer bushing and is led out of the...
Embodiment 2
[0143] The large-scale transformer current-through device in the embodiment of the present application is used for a transformer of 500kV and above, and a current transformer CT is arranged inside the transformer bushing, and the primary side of the current transformer CT is arranged in the primary side circuit of the transformer. see image 3 , image 3 It is a schematic structural diagram of another large-scale transformer flow-through device provided in the embodiment of the present application. Depend on image 3 It can be seen that the large-scale transformer current-through device mainly includes a power supply 1 , a switch 2 , an isolation transformer 4 and a capacitor 3 which are sequentially connected in series. The high voltage side of the isolation transformer 4 is connected to the switch 2 , and the low voltage side of the isolation transformer 4 is connected to the capacitor 3 in series. The capacitor 3 is connected in series with the primary side of the transf...
Embodiment 3
[0250] The large-scale transformer current-through device in the embodiment of the present application is used for a transformer of 500kV and above, and a current transformer CT is arranged inside the transformer bushing, and the primary side of the current transformer CT is arranged in the primary side circuit of the transformer. see Figure 4 , Figure 4 It is a schematic structural diagram of another large-scale transformer flow-through device provided in the embodiment of the present application. Depend on Figure 4 It can be seen that the large-scale transformer flow-through device mainly includes a power supply 1, a switch 2, an isolation transformer 4 and a capacitor 3 connected in series in sequence, wherein a voltage regulating device 5 is provided between the power supply 1 and the isolation transformer 4, and the voltage regulating device 5 is used for Adjust the size of the primary side current of the transformer, thereby controlling the size of the secondary sid...
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