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

A generator set and self-calibration technology, which is applied to the control system, control generator, electrical components, etc., can solve the problems of heavy workload, poor versatility of correction methods, and low accuracy of load compensation, achieving high accuracy and improving accuracy degree, the effect of stabilizing the operation of the unit

Active Publication Date: 2017-12-12
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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  • Claims
  • Application Information

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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.

Method used

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

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Embodiment 1

[0038] figure 1 It is a principle diagram of the first embodiment of the online self-calibration controller for the primary frequency modulation of the generator set of the present invention.

[0039] Such as figure 1 As shown, an online self-calibration controller for primary frequency regulation of a generator set provided by an embodiment of the present invention includes:

[0040] (1) A power grid frequency deviation calculation module, which is used to calculate the deviation between the real-time operating frequency of the power grid and the reference frequency of the power grid to obtain the grid frequency deviation.

[0041] Wherein, the real-time operating frequency of the grid is collected by the frequency transmitter and transmitted to the grid frequency deviation calculation module.

[0042] The grid reference frequency is 50Hz.

[0043] (2) Frequency modulation compensation command function F(x) module, which is used to calculate the primary frequency modulation ...

Embodiment 2

[0107] Such as figure 2 As shown, on the basis of the first embodiment, the generator set primary frequency regulation online self-calibration controller further includes a limiter module, and the limiter module is used to adjust the upper and lower limits of the primary frequency regulation correction coefficient according to the actual operating conditions of the generator set.

[0108] Generally, the limit is 0.7~1.3, and the correction coefficient is sent to the command speed limit module after being limited.

[0109] The primary frequency modulation online self-calibration controller of the generating set also includes a speed limiting module, the speed limiting module is used to limit the speed of the primary frequency modulation correction coefficient after the upper and lower limit values, and directly transmit the primary frequency modulation correction coefficient after the speed limit to the instruction to fix the MUL module.

[0110] The invention limits the spee...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/04H02J3/24
Inventor 韩英昆刘卫明赵岩孟祥荣杨朋威陈肖璐庞向坤李克雷宋洋苏鹏韩晋思杨皓
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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