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Open-loop control method and system for guide vane opening analog quantity of hydropower station monitoring system

A monitoring system and guide vane opening technology, applied in the control system, control generator, electrical components, etc., can solve the problems of slow active power regulation, reaction and the influence of the inertia of the unit, so as to improve the regulation quality and reduce the Risk of diverging oscillation, effect of improving quickness

Active Publication Date: 2022-04-19
CHINA YANGTZE POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides an open-loop control method and system for the analog quantity of the guide vane opening in the opening mode of the hydropower station monitoring system, aiming to solve the problem of slow active power adjustment in the opening mode when the power closed-loop conventional pulse adjustment method is adopted. , the adjustment process is easily affected by the water hammer reaction and the inertia of the unit

Method used

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  • Open-loop control method and system for guide vane opening analog quantity of hydropower station monitoring system

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Embodiment 1

[0079] The invention belongs to the field of computer monitoring systems of hydropower stations, and relates to a brand-new control method and structure of a monitoring system of a hydropower station. More specifically, it relates to an open-loop control method and structure of an analog quantity of opening of a guide vane in an opening mode of a monitoring system of a hydropower station.

[0080] This method is based on the corresponding data table of water head, active power and guide vane opening. In the opening mode, the method of checking the corresponding data table is adopted to quickly and accurately adjust the active power of the unit, and output the new analog control signal of guide vane opening. The method aims to solve the problems of slow active power adjustment speed and the adjustment process is easily affected by water hammer reaction and unit inertia when the power closed-loop conventional pulse adjustment method is adopted in the opening mode, so as to improve...

Embodiment 2

[0112] In order to further improve the quickness of the adjustment process and avoid the problem of excessive overshoot caused by too fast adjustment speed, an open-loop control method and structure based on the open-loop control method and structure of the guide vane opening analog quantity in the opening mode of the monitoring system of the hydropower station are optimized Improvement to realize segmented open-loop control, forming a segmented open-loop control method and structure for the opening mode guide vane opening analog value of the hydropower station monitoring system. This method is based on the corresponding data table of water head, active power and guide vane opening. In the opening mode, the method of checking the corresponding data table is adopted to quickly and accurately adjust the guide vane opening of the unit, and output the analog value of guide vane opening. The brand-new method of control signal aims to solve the problems of slow active power adjustmen...

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Abstract

A hydropower station monitoring system opening mode guide vane opening analog open-loop control method and system, based on the corresponding data table of water head, active power and guide vane opening, in the opening mode, the way of checking the corresponding data table is adopted to control The active power of the unit is adjusted quickly and accurately, and the analog control signal of the guide vane opening is output. It is designed to solve the problems of slow active power adjustment speed and the adjustment process is easily affected by water hammer reaction and unit inertia when the power closed-loop conventional pulse adjustment method is adopted in the opening mode, so as to improve the quickness of the adjustment process and realize the opening of the guide vane of the unit. And fast and stable control of active power to improve regulation quality.

Description

technical field [0001] The invention belongs to the field of computer monitoring systems of hydropower stations, and in particular relates to an open-loop control method and system for analog quantities of guide vane openings in the monitoring system of hydropower stations. Background technique [0002] At present, during the operation of the hydro-generator set, the monitoring system in the opening mode usually adopts the power closed-loop conventional pulse adjustment method, and through the intermediate relay, the output opening increase and decrease pulses are sent to the electronic control system of the governor to realize the control of the hydro-generator set. Opening control. For the control method, please refer to the Chinese invention patent "A Active Power Pulse Regulation System for LCU of Hydropower Station Units", (patent number: ZL201610327273.6). This method uses interpolation algorithm and corrected proportional algorithm to improve the timeliness and relia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/10H02P9/04H02P101/10
CPCH02P9/105H02P9/04H02P2101/10
Inventor 涂勇
Owner CHINA YANGTZE POWER
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