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Generator grid-connected signal synthesis mode

A signal synthesis and generator technology, applied in the field of power plants, can solve problems such as the disappearance of the generator's grid-connected signal

Inactive Publication Date: 2021-03-26
河北蔚州能源综合开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the operation of the unit, if there is a problem with the measurement circuit of the turbine speed and generator voltage, the signal of generator connected to the grid will disappear, and the OPC protection will operate

Method used

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  • Generator grid-connected signal synthesis mode
  • Generator grid-connected signal synthesis mode
  • Generator grid-connected signal synthesis mode

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Experimental program
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Embodiment Construction

[0031] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0032] Figure 3-Figure 4 It is a preferred mode of the present invention, which shows a generator grid-connected signal synthesis method, including: generator outlet switch, circuit breaker, RS trigger, generator synchronous operation screen, characterized in that: the circuit breaker Use 3 / 2 wiring to connect with the functional contact point of the confirmation button position of the generator outlet knife switch through the wire; add the confirmation button of the generator outlet knife switch in the synchronous operation screen of the generator, which uses the set button template, the button Always display the word "closed", when the generator grid-connected signal is not sent to DEH, the button will display green, click once to display red, click again to display green; after the generator outlet switch is closed, the operating personnel will click "close After...

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Abstract

The invention discloses a generator grid-connected signal synthesis mode, which comprises a generator outlet knife switch, a circuit breaker, an RS trigger and a generator synchronous operation picture, and is characterized in that the circuit breaker is connected with a functional contact for confirming whether the generator outlet knife switch is switched onto a button position or not through using a lead wire by adopting 3 / 2 wire connection ; and a generator outlet knife switch switching-on confirmation button is additionally arranged in a generator synchronous operation picture, a settingbutton template is adopted for the button, the button always displays a ''switching-on'' character, and when a generator grid-connected signal is not sent to a DEH, the button displays green, clicks to display red once and clicks to display green again. The problem that generator grid-connected signals disappear due to generator stator voltage acquisition loop faults and generator outlet knife switch signal faults in the operation process of a unit is effectively avoided, the loop is simple, the function is ingenious, the equipment reliability is greatly enhanced, and safe and stable operationof the generator unit is guaranteed.

Description

technical field [0001] The invention relates to the technical field of power plants, in particular to a method for synthesizing signals of generators connected to the grid. Background technique [0002] With the development of my country's electric power industry, large generating units above 300MW and 500kV ultra-high voltage and 1000kV ultra-high voltage have become the main force of the transmission grid. The power grid has higher and higher requirements for the safe and reliable operation of the generator set; many important signals play a vital role in the operation of the generator set. If the synchronization conditions are met, automatic synchronization can be put into use at this time, and the electrical automatic synchronization device will send out pulse commands for speed increase and decrease to the speed setting value according to the deviation between the grid frequency and the turbine speed; when the generator speed, phase and other parameters are consistent w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/38
Inventor 卢亚超张鹏任妍慧梁明刘臣佑田伦王航
Owner 河北蔚州能源综合开发有限公司