Wireless high voltage nuclear phase meter is used for phase check and phase sequence check of power line and substation. It has the characteristics of nuclear phase test and phase sequence check, and has strong anti-interference properties. It meets EMC standard requirements and ADAPTS to various electromagnetic field interference occasions. The phase signal of measured high voltage is taken out by the collector and directly emitted after processing. Received by nuclear phase analyzer and phase comparison, qualitative results after nuclear phase. Because the instrument is wireless transmission, truly safe, reliable, fast and accurate, adapt to various nuclear phase occasions. Measures to be implemented by wireless high voltage nuclear phase analyzer in substation generator before operation:
1) Drainage measures must be taken to ensure the normal operation of all pits and channels in the power station. Drainage holes may be blocked by scale and should be cleaned regularly;
2) When repairing the hydraulic machinery department, the possibility of water leakage must be taken into account, measures must be taken to prevent water flooding equipment, and the drainage situation must be correctly judged;
3) when doing electrical tests, we should first make clear the wiring situation of the equipment and determine the test items, methods, steps and safety measures before the test;
4) When disconnecting the primary and secondary wiring, it is necessary to make obvious marks and records to prevent wrong wiring; Phase sequence check and nuclear phase must be checked before operation after restoring wiring. After the secondary circuit of the voltage transformer is repaired, it is necessary to carry out the nuclear phase, and the voltage transformer on both sides of the transformer must be under the same power supply to get the correct judgment and result; To carry out the false synchronous test, when the isolation switch is opened, the circuit breaker will be manually quasi-synchronous and automatic quasi-synchronous closing, check the quality of the simultaneous device and meter;
5) In the process of grid connection, multiple meters should be compared to judge their correctness, and the operation ticket must be strictly followed, and the guardian should monitor them in place;
6) Maintenance and operation personnel must be familiar with the factory's primary system and secondary system, and comply with relevant regulations, specifications and equipment instructions;
7) The synchronization meter pointer stops at zero position and does not move or the pointer has pointed at zero position and shall not be closed. When the generator is not integrated into the system, it is only temporary to reach the same period with the system. The synchronous meter stops at zero and does not move, which may be caused by disconnection or other reasons in the table, and shall not be closed.
8) When the synchronous meter of the wireless high voltage nuclear phase meter moves too fast to zero, it indicates that the frequency difference between the waiting generator and the system is too large, so it is difficult to master the closing operation time of the circuit breaker, which is easy to cause non-synchronous, so it is not allowed to close;
9) When the pointer of the synchronization meter is unstable beyond zero and there is a jumping phenomenon, it may be because the internal contact of the synchronization relay is stuck, so it is not allowed to close.
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