Seasonal adjusting controlling system and method for power factors of hydroelectric generators

A hydroelectric generator and power factor technology, applied in the direction of controlling generators through magnetic field changes, can solve the problems of insulation breakdown, easy to cause various accidents, accelerated insulation aging, etc.

Inactive Publication Date: 2013-12-04
常州市俊宏电器厂
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  • Abstract
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Problems solved by technology

[0003] In addition, the terminal voltage of the hydroelectric generating set is too high, which affects the safe operation of the power station and is likely to cause various accidents. The components of electrical equipment are easily broken down and burned out. cause insulation breakdown
When the terminal voltage of the hydroelectric generating set is higher than 105% of the rated voltage, the aging of the insulation will be accelerated due to magnetic flux saturation

Method used

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  • Seasonal adjusting controlling system and method for power factors of hydroelectric generators
  • Seasonal adjusting controlling system and method for power factors of hydroelectric generators

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] refer to figure 1 , the hydroelectric generator power factor seasonal adjustment control system of the present invention includes a clock generator 10, a controller 20, a digital-to-analog converter 30, an amplifier 40, a current sampler 50, a voltage sampler 60, an input keyboard 70 and a display 80. Each part is described in detail below:

[0026] The clock generator 10 is connected with the input end of the controller 20, the clock generator 10 provides the time for the controller, and the controller calculates the season according to the time, and sends out the numbers for adjusting the power factor adjustment of the hydroelectric generating set according to the seasonal change, and the season can be It is not specific, that is, it is not consistent with the existing season, and can be compiled according to the water sourc...

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PUM

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Abstract

The invention relates to a seasonal adjusting controlling system for power factors of hydroelectric generators. The system comprises a clock generator, a controller, a digital-to-analog converter and an amplifier. The clock generator is connected with the controller and provides time for the controller, and the controller performs calculation on seasons according to the time and sends figures for adjusting power factors of a hydroelectric generator set according to seasonal changes; the input end of the digital-to-analog converter is connected with the output end of the controller, and the digital-to-analog converter converts digital signals output by the controller into analog signals; the input end of the amplifier is connected with the output end of the digital-to-analog converter, the output end of the amplifier is connected with the hydroelectric generator set, and the signals output by the digital-to-analog converter are used for adjusting exciting currents of the hydroelectric generator set after being amplified by the amplifier. By means of the seasonal adjusting controlling system and method, power factors of hydroelectric generators are changed automatically during seasonal changes.

Description

technical field [0001] The invention relates to the technical field of hydraulic generators, in particular to a control system and method for seasonal adjustment of power factors of hydraulic generators. Background technique [0002] When the hydroelectric generating set is running at full load, the power factor should not be adjusted too low. This is because when the power factor of the generating set changes from the rated value to zero, the lower the power factor is, the greater the reactive component of the stator current will be. The current is also large, so the temperature of the rotor coil may exceed the allowable temperature rise, so the power factor must be adjusted to increase when running at full load, that is, to reduce reactive power. [0003] In addition, the terminal voltage of the hydroelectric generating set is too high, which affects the safe operation of the power station and is likely to cause various accidents. The components of electrical equipment are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/14
Inventor 谢公平
Owner 常州市俊宏电器厂
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