Nuclear phase:
It refers to checking the phase of the two power sources or loops and the phase sequence by instrument or other means in the electrical operation of the power system.
That is, the measurement of the phase difference in the operation of the actual power. After the new, rebuilt, and expanded substation and transmission line, and before the line is overhauled and sent to the user, the phase test of the three-phase circuit must be carried out to ensure the phase sequence of the transmission line and the three-phase load required by the user. The phase sequence is consistent.
Nuclear phase method of power system
The new power station is connected to the grid. Before the new substation is put into production, the nuclear phase test is often done. The nuclear phase mentioned at the site includes the check phase sequence and the check phase. Check the phase sequence, mainly for the normal operation of generators and motors. In the practice of electric power production, the generator must be tested before the grid connection, the phase sequence is wrong, the generator can not be connected to the grid, and forced connection will cause equipment damage. In the transformation of the power grid, it should also pay attention to maintaining the original phase sequence of the power grid, so as not to cause trouble to the users.
For the rotor of generator and motor, connect the excitation current to the positive and negative terminals of the factory, check the A, B, and C phases in the stator lead-out line of the generator and motor, check the grid end in order, and find the swap phase. In the preface, if the color of the grid is correct, the probability of success in the nuclear phase is large. For the motor phase, power on it and see the direction of rotation to determine the phase sequence.
The wireless high-voltage nuclear phase meter is the phase check and phase sequence check of the power line and substation of the power system, and has the functions of nuclear phase, phase sequence measurement and power inspection. The wireless high-voltage nuclear phase meter has strong anti-interference and meets the requirements of (EMC) standards, and is suitable for various electromagnetic field interference occasions. The measured high voltage phase signal is taken out by the collector and directly transmitted after being processed. The phase is compared and the phase comparison is performed to characterize the results after the nuclear phase.
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