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A system and method for phase verification of units with single-bus system wiring mode

A wiring method and a single busbar technology, which is applied in the field of single-busbar system wiring mode unit phase verification system, can solve the problems that the phasing test cannot be carried out, and the busbar can no longer be used, so as to prevent the generator from breaking the shaft accident, safety and The effect of high reliability and accurate identification

Active Publication Date: 2021-12-10
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since there is only one busbar in the single busbar system wiring mode, the unit cannot carry out the zero-start boost test with the busbar after the main transformer reverses the power supply to the plant, so that the phasing test cannot be carried out

Method used

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  • A system and method for phase verification of units with single-bus system wiring mode
  • A system and method for phase verification of units with single-bus system wiring mode

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0028] refer to figure 1 , the single bus system wiring mode unit core phase system according to the present invention includes a high voltage busbar voltage transformer 2, a high voltage busbar unit 1, a main transformer bay high voltage side circuit breaker unit 3, a main transformer unit 4, a generator outlet circuit breaker unit 6. Factory transformer unit, closed busbar 8, excitation transformer 10, generator unit 9 and several generator outlet circuit breaker terminal voltage transformers 7; high voltage busbar voltage transformer 2 is installed on high voltage busbar unit 1, The high voltage side circuit breaker unit 3 and the main transformer unit 4 are connected to the factory transformer unit and one end of the generator outlet circuit breaker unit 6 through the main transformer interval, and the other side of the generator outlet circuit breaker unit 6 is c...

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Abstract

The invention discloses a system and method for phase verification of a single-bus system wiring mode unit. The high-voltage bus voltage transformer is installed on the high-voltage bus unit, and the high-voltage bus unit is separated from the high-voltage side circuit breaker unit and the main transformer unit by the main transformer. The unit is connected to one end of the generator outlet circuit breaker unit, and the other side of the generator outlet circuit breaker unit is connected to the closed bus. The terminal voltage transformer of the generator outlet circuit breaker is installed on the closed bus. The soft connection between the busbars, the soft connection between the excitation transformer and the closed busbar, the low-voltage side of the main transformer unit is equipped with a voltage transformer on the low-voltage side of the main transformer. High performance and operability.

Description

technical field [0001] The invention belongs to the technical field of electric power debugging and electric power testing, and relates to a system and a method for checking the phase of a unit in a single bus system wiring mode. Background technique [0002] The wiring feature of the single busbar system wiring method is that there is only one set of busbars, and all power sources and outgoing lines are connected to the busbar through circuit breakers and isolating switches. incoming circuit. "Technical Specifications for Commissioning of Thermal Power Generation Construction Engineering Units" DL-T5294-2013 clearly requires the phasing test of the generator synchronous system during the start-up process of the whole set, the zero-start boost test with the bus, the verification of the TV polarity used for the same period, the generator transformer set and the The system side TV secondary phase check, so as to avoid the asynchronous grid connection of the unit. However, si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38H02H7/28G01R29/18G01R25/00
CPCH02J3/00H02J3/381H02H7/28G01R29/18G01R25/005
Inventor 王团结何信林牛利涛张钢李春丽张鹏杨世强雷阳季东旭张少鹏
Owner XIAN THERMAL POWER RES INST CO LTD
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