一种对水电站二次调频进行校准调节的方法

By selecting generating units with a large error ratio for calibration and adjustment in the secondary frequency regulation of hydropower stations, the problem of quantitatively measuring the accuracy of secondary frequency regulation of power stations by dispatching in the existing technology has been solved, achieving higher regulation accuracy and error reduction.

CN116316700BActive Publication Date: 2026-07-17HUANENG LANCANG RIVER HYDROPOWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUANENG LANCANG RIVER HYDROPOWER CO LTD
Filing Date
2023-04-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies have failed to effectively address the quantitative measurement of the secondary frequency regulation accuracy of power plants by dispatching, resulting in significant randomness in active power regulation errors and failing to meet the dispatching's desired requirement to maximize the accuracy of secondary frequency regulation.

Method used

When the secondary frequency regulation of a hydropower station reaches the calibration time threshold and the active power of a single unit has not been completed, the units with an error ratio greater than the calibration accuracy threshold are selected for calibration and regulation. The active power setting value of the units is adjusted to reduce the active power regulation error of the entire plant. The calibration and regulation time and accuracy threshold are set to achieve precise regulation.

Benefits of technology

It effectively reduces the active power regulation error of hydropower stations, improves the regulation accuracy of secondary frequency regulation, avoids negative impacts on other functions of secondary frequency regulation, and ensures that regulation delay and rate indicators are not affected.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种对水电站二次调频进行校准调节的方法，在水电站二次调频的调节时间达到校准时间门槛、各水电机组中单机有功功率调节未完成的台数不超过一台时，若二次调频的误差比例大于校准精度门槛，则进行二次调频校准调节：选择未完成单机有功功率调节的机组，或单机有功设定值与单机有功实发值的差值绝对值最大的机组，为执行校准调节的机组；将执行校准调节的机组的单机有功设定值设置为单机有功功率预分配值进行校准调节。本发明的二次调频校准调节，可以有效在原水电站有功功率调节功能的基础上，进一步降低调节误差；可以明显的降低调节误差、提高水电站二次调频的调节精度。
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Citation Information

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