High-frequency noise power gain online tracking method for high-order control strategy parameter adjustment
A technology of high-frequency noise and power gain, which is applied in the field of high-frequency noise power gain online tracking improvement method and system, and can solve the problems of high-order advanced observer interference, high-frequency noise interference amplification, noise interference amplification, etc.
Active Publication Date: 2021-08-27
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology
However, high-order look-ahead observers have the problem of noise interference amplification, mainly high-frequency noise interference amplification
When the high-frequency noise interference level is high, for example, the high-frequency noise power gain (High frequency noise power gain, HFNPG) is high, it will cause serious interference to the output signal of the high-order lead observer, and even cause the high-order lead Observer is not working properly
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[0108] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0109] It should be understood that the step numbers used herein are only for convenience of description, and are not intended to limit the execution order of the steps.
[0110] It should be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an"...
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According to the high-frequency noise power gain online tracking improvement method and system suitable for high-order control strategy parameter adjustment, online calculation of the high-frequency noise power gain is completed through noise interference signals contained in signals, and the signals generally contain high-frequency noise interference signals in the actual process. The high-frequency noise power gain of the high-order advanced observer is tracked in real time and controlled to be given by a preset number of high-frequency noise power gains, the performance of the high-order advanced observer is controlled to be in an optimal state, and the influence on online work of the high-order advanced observer is small.
Description
technical field [0001] The invention relates to the technical field of thermal power unit process control, in particular to an online tracking improvement method and system for high-frequency noise power gain applicable to high-order control strategy parameter adjustment. Background technique [0002] In the field of process control of thermal power units, using advance observation to obtain advance information of process response is of great significance for improving process control performance. There are many forms of advanced observation, such as differentiator (Differentiator, D), proportional - differential (Proportional-Derivative, PD) controller and so on. In practice, improving the order of the leading observer can obtain better performance of leading observation. Usually, the leading observer with an order greater than or equal to 3 is called a high-order leading observer (Highorder leading observer, HOLO), such as the third-order leading observer Observers, fourt...
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IPC IPC(8): G06F17/15G06F7/544G06F7/556G06F30/20G06F119/10
CPCG06F17/15G06F7/5443G06F7/556G06F30/20G06F2119/10
Inventor 陈锦攀
Owner GUANGDONG POWER GRID CO LTD