Primary frequency modulation online self-tuning controller and control system for generator set and method

Abstract

The invention discloses a primary frequency modulation online self-tuning controller and control system for a generator set and a method of the primary frequency modulation online self-tuning control system for the generator set, wherein the controller comprises a power network frequency deviation calculation module used for obtaining deviation between power network real-time operation frequency and power network reference frequency to obtain network frequency deviation, a frequency modulation compensation command function F(x) module used for calculating a primary frequency modulation load compensation command function F(x) of the generator set according to the network frequency deviation and set revolving speed diversity factors, and sending the primary frequency modulation load compensation command function F(x) of the generator set to a self-calibration algorithm control module and a command correction MUL module respectively, the self-calibration algorithm control module used for calculating a primary frequency modulation command correction coefficient and the command correction MUL module used for receiving the primary frequency modulation correction coefficient output by the self-calibration algorithm control module, and correcting the primary frequency modulation load compensation command function F(x) of the generator set to obtain a primary frequency modulation actual motion compensation command of the set, and finally sending the primary frequency modulation actual motion compensation command of the set to a set load control system.

Description

technical field [0001] The invention belongs to the field of primary frequency regulation of generator sets, and in particular relates to an online self-calibration controller, control system and method for primary frequency regulation of generator sets. Background technique [0002] With the rapid construction of UHV power grids, large-capacity generator sets, and new energy power generation, the structure of the grid has undergone major changes. When the generator sets and lines fail, it will cause the grid to lose a large amount of input load instantaneously, causing grid parameters to fluctuate, affecting Therefore, under the new situation, the task of frequency regulation and peak regulation undertaken by the power grid is getting heavier and heavier. [0003] At present, the primary frequency regulation of the power grid is mainly undertaken by generator sets. At the beginning of operation, various types of generating units are designed with primary frequency regulatio...

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Problems solved by technology

[0004] In addition, at present, the fixed compensation coefficient correction method is mostly adopted for the primary frequency regulation of generator sets. When the primary frequency regulation action of the generator set is unqualified, according to the operation situation of the generator set, the compensation coefficient can be manually modified after the fact. The workload is relatively large, and the load compensation accuracy of this method is relatively lower

In addition, the characteristics of different units are different, and the correction coefficients are also different, and the correction method is not universal.

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