One-time pressure-through and simultaneous-phase verification inspection system and inspection method of electrical system

Abstract

The invention discloses an inspection system and an inspection method for one-time pressure-passing and synchronous phase verification of an electrical system. The invention belongs to the technical field of one-time pressure and simultaneous phase verification inspection of electrical systems. The system and inspection method are to carry out one-time voltage and simultaneous phase verification inspection before the electrical system is powered, so as to ensure that the electrical system is synchronized with the power supply and operates normally. The output terminal of the generator and one end of the high-voltage factory transformer are respectively connected to the input terminal of the main transformer; the switch blade terminal of the working power incoming line switch DL1 and the detection terminal of the working power incoming line voltage transformer PT1 are respectively connected to the high-voltage factory transformer. On the other end; the two ends of the low-voltage factory transformer are respectively connected to the three-phase voltage regulator and one end of the feeder switch DL3, and the three-phase experimental power supply is connected to the three-phase voltage regulator; the switch knife end of the backup power incoming switch DL2 and the detection end of the standby power incoming line voltage transformer PT2 are respectively connected to one end of the high voltage standby transformer.

Description

technical field [0001] The invention relates to the technical field of one-time pressure and simultaneous phase verification inspection of electrical systems, in particular to an electrical system one-time pressure and synchronous phase verification inspection system and inspection method. Background technique [0002] One of the characteristics of large-capacity thermal power generators is the centralized control of machines, furnaces, and electrical units. The safety and reliability of the utility power system has a very important impact on the operation of the entire generator set and even the entire power plant. It is an important part of the whole plant power system. [0003] Another feature of large-capacity thermal power generating units is the large number of motors and large capacity, which makes the voltage attenuation slower after the factory bus is powered off. The basic requirement of the generating set for the switchover of plant power is safety and reliabilit...

AI Technical Summary

Problems solved by technology

At this time, the electrical system does not have the conditions to conduct a phase verification of the system synchronous power supply to conduct a synchronous inspection of the voltage circuit of the power switching device, and the phase verification inspection of the voltage circuit cannot be performed

If one-time verification is adopted for simultaneous inspection, the operation volume of the on-site operation status is relatively large, and the inspection operation risk is high, and the correctness of the voltage circuit of the plant power switching device can only be checked indirectly through the first verification phase and the second verification phase.

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