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A method for automatic start-up of large-capacity synchronous motor

A synchronous motor and large-capacity technology, applied in starting devices, AC network voltage adjustment, energy industry, etc., can solve problems such as many operation steps, long time consumption, and affecting the input rate of automatic voltage control systems

Active Publication Date: 2022-06-07
DATANG LUBEI POWER GENERATION
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  • Description
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  • Application Information

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Problems solved by technology

[0004] However, the problems in the above-mentioned process are: the whole operation process is performed on-site with electric motors, and there are many operation steps, which takes a long time, and misoperation events may occur, and it takes a long time to manually exit the automatic voltage control system. Affects input rate of automatic voltage control system

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  • A method for automatic start-up of large-capacity synchronous motor
  • A method for automatic start-up of large-capacity synchronous motor

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Embodiment Construction

[0032] The following is combined with the attached Figure 1 、 Figure 2 The present invention will be further described in detail.

[0033] A large-capacity synchronous motor automatic starting method for starting a synchronous motor, such as Figure 1 As shown, a large-capacity synchronous motor automatic starting method, in the automatic voltage control system to control the start of the synchronous motor, automatic voltage control system refers to the power plant network reactive voltage state for centralized monitoring, analysis, calculation, and then control the regulation of the synchronous motor output stable voltage system, reactive voltage refers to the voltage caused by the line change caused by the synchronous motor, it should be noted that the analysis and calculation here is the automatic voltage control system itself to analyze and calculate the process, belongs to the prior art, And support the normal operation of the automatic voltage control system, the present appl...

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Abstract

The invention discloses an automatic starting method for a large-capacity synchronous motor. The starting of the synchronous motor is controlled on an automatic voltage control system. The system that adjusts the stable output voltage of the synchronous motor. The start of the synchronous motor only needs to be carried out on the automatic voltage control system. Switching the manual control mode to the automatic control mode eliminates the need for manual operation at the operating site, saves the time of exiting the automatic voltage control system, avoids misoperation, and improves the automatic voltage control system.

Description

Technical field [0001] The present invention relates to the field of power plant motor automation control technology, in particular to a large-capacity synchronous motor automatic starting method. Background [0002] Many rotating machinery in power plants need to be driven by electric motors. For example: fans, synchronous motors, oil pumps, coal conveyor belts and electric valves. The normal operation of electric motors in power plants has a very important role. [0003] Large-capacity synchronous motor (large-capacity synchronous motor refers to a motor with electrical power of several hundred or even kilowatts) in the start of the moment of start-up the current is large, will cause the 6KV bus voltage drop during the start-up process, when starting the large-capacity synchronous motor, due to the operator in the motor control site manually exit the automatic voltage control system (referred to as AVC), and then manually increase the excitation, The 6kV bus voltage rises to ab...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12H02P6/20
CPCH02J3/12H02P6/20Y02P80/10
Inventor 张峰侯玉良
Owner DATANG LUBEI POWER GENERATION