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Primary frequency modulation function optimization experiment method of generator set

A generator set and functional technology, which is applied in the direction of motor generator test, engine test, machine/structural component test, etc., can solve the problems such as the failure of the primary frequency modulation function of the generator set, hidden dangers of power grid operation, and power grid frequency fluctuations. , to achieve the effect of improving power supply quality, controlling stability, and improving the ability of frequency change

Inactive Publication Date: 2014-07-02
STATE GRID CORP OF CHINA +1
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AI Technical Summary

Problems solved by technology

[0003] Due to the differences in the design concepts and implementation methods of different ESC manufacturers, there are many problems in the primary frequency regulation function of the steam turbine generator set, and even the primary frequency regulation function of some generator sets cannot be put into normal use for a long time, resulting in frequent fluctuations in the grid frequency. There are certain hidden dangers in the operation of the power grid

Method used

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  • Primary frequency modulation function optimization experiment method of generator set
  • Primary frequency modulation function optimization experiment method of generator set
  • Primary frequency modulation function optimization experiment method of generator set

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Embodiment Construction

[0025] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0026] An optimization and improvement method for the primary frequency regulation function test of a generator set, which is realized by superimposing the signal converted by the power-frequency function of the frequency difference signal on the speed regulation valve command of the steam turbine; at the same time, in the decentralized control system The frequency correction function is put into the power control loop to ensure the response speed of the unit's primary frequency regulation and the continuity of the unit's participation in the primary frequency regulation; and to ensure that the functions of the two are consistent and must match each other. like figure 1 shown, including the following steps:

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Abstract

The invention relates to a primary frequency modulation function optimization experiment method of a generator set. The primary frequency modulation function optimization experiment method of the generator set comprises the steps that (1) rotating speed deviation signals are converted into frequency difference - power signals; (2) the frequency difference - power signals are converted into primary frequency modulation power - valve position incremental quantity instructions through per-unit processing; (3) a speed limiting module and a power amplitude limiting module are arranged to generate actual load instructions; (4) the frequency difference - power signals and the actual load instructions are summated to form a comprehensive load instruction, and then deviation calculation is conducted on the comprehensive load instruction and the actual load feedback signals of the generator set; (5) proportional - integral PI operation processing is conducted, and a comprehensive electric door adjusting instruction is generated finally; (6) the comprehensive door adjusting instruction and the primary frequency modulation power - valve position incremental quantity instructions undergo superposition summation, and the load of the turbo generator set is adjusted after processing. The primary frequency modulation function optimization experiment method of the generator set effectively improves the capacity for participating in primary frequency modulation of a power grid of the generator set, and the power supply quality of the power grid is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of automatic power generation control, and relates to a test method for optimizing the primary frequency regulation function of a generating set. Background technique [0002] With the development of science and technology, society has higher and higher requirements for power quality, which requires grid-connected generator sets not only to have the ability to quickly adapt to changes in external loads, but also to have the ability to quickly adjust the grid frequency. The speed control system of the turbo-generator set automatically changes the opening of the speed-regulating valve according to the change of the grid frequency to adjust the power of the turbo-generator set to adapt to the fluctuation of the grid frequency, which is the primary frequency regulation. The control system of newly-built large-capacity turbo-generator sets or turbo-generator sets that have undergone technical transformation of th...

Claims

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Application Information

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IPC IPC(8): G01M15/00G01R31/34
Inventor 王建军赵毅张长志张应田
Owner STATE GRID CORP OF CHINA
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