Electrical system primary voltage-passing synchronous nuclear phase rapid switching test system and method
A fast switching and electrical system technology, applied in the direction of electrical components, measuring circuits, circuit devices, etc., can solve problems such as high risk of inspection operations, large amount of operation, and lack of electrical systems
Active Publication Date: 2020-03-13
CHINA ENERGY ENG EASTERN ELECTRIC POWER TESTING RES INST CO LTD
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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.
Method used
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Embodiment
[0046] Embodiment: The inspection system for rapid switchover inspection system of one-time pressurization and synchronous verification phase of the electrical system, see Figure 1-4 shown. Including generator, main transformer, high-voltage factory transformer, working power inlet switch DL1, working power inlet voltage transformer PT1, factory working section bus voltage transformer PT3, feeder switch DL3, low-voltage factory transformer, three-phase experimental power supply, Backup power inlet switch DL2, backup power inlet voltage transformer PT2, high-voltage backup transformer, factory power quick switching device and factory working section busbar;
[0047] The output end of the generator and one end of the high-voltage factory transformer are respectively connected to the input end of the main transformer;
[0048] The switch knife end of the working power incoming line switch DL1 and the detection end of the working power incoming line voltage transformer PT1 are r...
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The invention discloses an electrical system primary voltage-passing synchronous nuclear phase rapid switching test system and method which belongs to the technical field of electrical system primaryvoltage-passing synchronous nuclear phase test, and carries out the primary voltage-passing synchronous nuclear phase test before an electrical system is electrified, and guarantees the same-power supply synchronous nuclear phase and the normal operation of the electrical system. The output end of a generator and one end of a high-voltage plant transformer are respectively connected to the input end of a main transformer, the knife switch end of a working power supply incoming line switch DL1 and the detection end of a working power supply incoming line voltage transformer PT1 are respectivelyconnected to the other end of the high-voltage plant transformer, and the two ends of a low-voltage plant transformer are respectively connected to a three-phase voltage regulator and one end of a feeder switch DL3. A three-phase experimental power supply is connected with a three-phase voltage regulator, and the knife switch end of a standby power supply incoming line switch DL2 and the detection end of a standby power supply incoming line voltage transformer PT2 are respectively connected to one end of a 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 an electrical system, in particular to an inspection system and inspection method for one-time pressure and synchronous verification phase fast switching inspection of an electrical system. 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 o...
Claims
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IPC IPC(8): H02J3/44H02J3/00G01R31/00G01R29/18G01D21/02
CPCG01D21/02G01R29/18G01R31/00H02J3/44
Inventor 蒋根华徐金兵朱立军王慧军张志峰叶仲义杨瑞峰
Owner CHINA ENERGY ENG EASTERN ELECTRIC POWER TESTING RES INST CO LTD