Primary frequency modulation control method and device

Abstract

The invention provides a primary frequency modulation control method and device. The method comprises the following steps: acquiring real-time process control data of a unit running under each load section working condition; according to the real-time process control data and a pre-established frequency modulation characteristic relationship prediction model, obtaining an optimal frequency modulation characteristic relationship of the unit running under each load section working condition, and obtaining an optimal frequency modulation characteristic relationship of the unit running under a full-load working condition; correcting parameters of the primary frequency modulation control system according to the optimal frequency modulation characteristic relationship of the unit running under the full-load working condition to perform primary frequency modulation control. According to the method, the optimal frequency modulation characteristic relationship of the unit running under the full-load working condition is obtained according to real-time process control data; the parameters of the primary frequency modulation control system are corrected according to the optimal frequency modulation characteristic relationship, and the primary frequency modulation control is carried out, so primary frequency modulation can be adjusted according to the optimal frequency modulation characteristic suitable for a real-time state, the primary frequency modulation capability of the unit is improved to the maximum extent, and the stability of a power grid is improved.

Description

technical field [0001] The invention relates to the technical field of primary frequency regulation in power grid operation, in particular to a primary frequency regulation control method and device. Background technique [0002] The primary frequency regulation is an important means of frequency adjustment in the power grid. The dynamic characteristics of the primary frequency regulation of thermal power generating units, as an important content of grid plant coordination, significantly affect the safe and stable operation of the system. In recent years, with the accelerated construction of UHV power grids and the massive access to clean energy, the power grid has continuously increased the requirements for the primary frequency regulation performance of thermal power units. On the one hand, with the accelerated construction of the UHV power grid and the continuous growth of new energy installed capacity, in order to ensure the safe and stable operation of the power grid af...

AI Technical Summary

Problems solved by technology

Therefore, although the existing frequency regulation circuit enables the unit to have the basic primary frequency regulation function, it cannot ensure the primary frequency regulation performance of the full load segment, especially the load segment with small frequency difference and valve flow linearity difference.

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