different, the current will flow th

different, the current will flow through the neutral point. Therefore, the neutral point impedance voltage drop will cause the neutral point displacement and the phase voltage will change. The single phase voltage decreases when overloaded and the single phase voltage increases when light load. In the case of unbalanced voltage supply, high voltage is likely to cause single-line appliances to burn out rather than use low-voltage single-line appliances. Therefore, when the three-phase unbalanced load, it will seriously endanger the safe operation of electrical equipment. In the case of three-phase unbalanced load operation, the output voltage of the unbalanced distribution transformer will be generated. because there are three voltage unbalanced voltage components: positive sequence, negative sequence, and zero sequence. When the input voltage is unbalanced motor, the negative sequence voltage and the positive sequence voltage produce the voltage opposite to the rotating magnetic field, respectively, and play a braking role. However, since the positive sequence magnetic field is much stronger than the negative sequence magnetic field, the motor is still rotating in the direction of the positive sequence magnetic field. the output power and efficiency of the motor will be reduced due to the negative sequence field of the braking action. At the same time, with the increase of three-phase unbalanced voltage, the temperature and reactive power consumption of the motor will also increase. Therefore, when the phase voltage of the motor is unbalanced, it is very uneconomical and unsafe. When the three-phase load is severely asymmetrical, the neutral point potential is offset, and the line voltage decreases and the power consumption will be greatly increased. User single-phase connection overload, easy to appear low voltage, light failure, low power efficiency, small pump burn out and other problems. Single phase high voltage light load users are easy to cause electrical insulation failure, damage or shorten the service life of electrical appliances. For power users, three-phase voltage imbalance can cause the motor to overheat. thus, positive, negative, and zero sequences. When the input voltage is unbalanced motor, the negative sequence voltage and the positive sequence voltage produce the voltage opposite to the rotating magnetic field, respectively, and play a braking role. However, since the positive sequence magnetic field is much stronger than the negative sequence magnetic field, the motor is still rotating in the direction of the positive sequence magnetic field. the output power and efficiency of the motor will be reduced due to the negative sequence field of the braking action. At the same time, with the increase of three-phase unbalanced voltage, the temperature and reactive power consumption of the motor will also increase. Therefore, when the phase voltage of the motor is unbalanced, it is very uneconomical and unsafe. When the three-phase load is severely asymmetrical, the neutral point potential is offset, and the line voltage drop and power consumption will be greatly increased. User single-phase connection overload, easy to appear low voltage, light failure, low power efficiency, small pump burn out and other problems. Single phase high voltage light load users are easy to cause electrical insulation failure, damage or shorten the service life of electrical appliances. For power users, three-phase voltage imbalance can cause the motor to overheat. thus, positive, negative, and zero sequences. When the input voltage is unbalanced motor, the negative sequence voltage and the positive sequence voltage produce the voltage opposite to the rotating magnetic field, respectively, and play a braking role. However, since the positive sequence magnetic field is much stronger than the negative sequence magnetic field, the motor is still rotating in the direction of the positive sequence magnetic field. the output power and efficiency of the motor will be reduced due to the negative sequence field of the braking action. At the same time, with the increase of three-phase unbalanced voltage, the temperature and reactive power consumption of the motor will also increase. Therefore, when the phase voltage of the motor is unbalanced, it is very uneconomical and unsafe. When the three-phase load is severely asymmetrical, the neutral point potential is offset, and the line voltage drop and power consumption will be greatly increased. User single-phase connection overload, prone to low voltage, light failure, low power effectrate, small pump burn out and so on. Single phase high voltage light load users are easy to cause electrical insulation failure, damage or shorten the service life of electrical appliances. For power users, three-phase voltage imbalance can cause the motor to overheat. Therefore, only three-phase load balance can guarantee the power quality of users. According to the symmetric component method, the