Treatment device and treatment method for low voltage caused by three-phase unbalance in distribution network terminal
A distribution network terminal and low-voltage technology, which is applied in the field of power systems, can solve the problems of low cost, achieve low cost, fast cost recovery, and reduce the inconvenience of using electricity
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Embodiment 1
[0023] Such as figure 1 As shown, the distribution network terminal of the present invention is a device for controlling low voltage caused by three-phase unbalance, and its structure is as follows: a voltage and current acquisition unit 1 connected to the home terminal for collecting the voltage and current value of each phase of the home, the voltage and current The acquisition part 1 is a voltage transformer and a current transformer, the output end of the voltage and current acquisition part 1 is connected to the voltage and current comparison part 2, the output end of the voltage and current comparison part 2 is connected to the control switching part 3, and the control switching part 3 is connected to the Three-phase load 4.
[0024] The above-mentioned home terminal is a three-phase voltage or a single-phase voltage, and the voltage-current comparison unit 2 is a current feedback operational amplifier and a voltage feedback operational amplifier. The switching control ...
Embodiment 2
[0028] Such as figure 2 As shown, the distribution network terminal of the present invention is a device for controlling low voltage caused by three-phase unbalance, and its structure is as follows: a voltage and current acquisition unit 1 connected to the home terminal for collecting the voltage and current value of each phase of the home, the voltage and current The acquisition part 1 is a voltage transformer and a current transformer. The output end of the voltage and current acquisition part 1 is connected to the voltage and current comparison part 2, the output end of the voltage and current comparison part 2 is connected to the control switching part 3, and the control switching part 3 is connected to the Unidirectional phase load5.
[0029] The above-mentioned home terminal is a three-phase voltage or a single-phase voltage, and the voltage-current comparison unit 1 is a current feedback operational amplifier and a voltage feedback operational amplifier. The switching...
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