Controller for variable frequency air conditioner participating in frequency modulation of power system by considering frequency modulation excitation signals

Abstract

The invention discloses a controller for a variable frequency air conditioner participating in frequency modulation of a power system by considering frequency modulation excitation signals. A comfortlevel setting module outputs set comfort level data to a historical data storage module and a central processing module; an excitation signal receiving module outputs an excitation signal to the historical data storage module and the central processing module; a frequency measurement module of a frequency converter outputs data to the historical data storage module and the central processing module; the historical data storage module outputs the historical data to a display screen module; the display screen module displays the data; the central processing module processes the set comfort leveldata, the frequency modulation excitation signal data and the real-time frequency data of the frequency converter to obtain a control signal, and transmits the control signal to the frequency converter of the air conditioner. The controller for the variable frequency air conditioner participating in frequency modulation of the power system by considering frequency modulation excitation signals can receive frequency modulation excitation signals sent by a power grid company, enables the variable frequency air conditioner to participate in frequency modulation response of a power system, reduces the pressure of frequency modulation at the power generation side, reduces resource waste caused by frequency modulation of a frequency modulation unit, and achieves the purposes of energy conservation and emission reduction.

Description

technical field [0001] The invention relates to a frequency conversion air conditioner controller, in particular to a frequency conversion air conditioner taking into account the frequency modulation excitation signal and participating in the frequency modulation of the electric power system. Background technique [0002] Due to the special nature of electricity that cannot be stored in large quantities, the power system is a system that balances power generation and power consumption in real time to ensure the stability of the system frequency. However, due to inaccurate power forecasting, large-scale access to new energy sources, and grid failures, it is difficult to ensure that the power generation and power consumption of the power system are completely consistent, which determines that the frequency of the power system has been fluctuating around 50Hz. In order to maintain the stability of the system frequency, a large number of generators are required as backup units, ...

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Problems solved by technology

[0004] On the one hand, when the existing inverter air conditioner controller adjusts the operating power of the inverter air conditioner, it is mainly to ensure the stability of the grid frequency, and less consideration is given to the negative impact of the inverter air conditioner due to frequent changes in operating power. First, the indoor temperature will change drastically. Frequent adjustment of the air conditioner compressor will generate noise, both of which will ultimately affect the comfort of the air conditioner user; The self-adjustment of the internal and external environment, this adjustment method is relatively blind, far inferior to the effect of regulation and control based on the frequency modulation excitation signal uniformly issued by the power grid, but will cause certain damage to the power grid

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