Power control method and system for inverter air conditioners

Abstract

The invention provides a power control method and a system for inverter air conditioners and relates to the technical field of air conditioners. The power control method and system are used for controlling the power of the inverter air conditioners in the power consumption peak period, so that the inverter air conditioners do not stop running and meanwhile, the power peak is weakened. The power control method comprises the following steps that the total power of a control area is acquired and whether the total power is greater than the limited power or not is judged; if the total power is greater than the limited power, the total number of the inverter air conditioners in a power utilization area and the total power of the inverter air conditioners are obtained; the limited power of each air conditioner is obtained according to the total power, the limited power, the total number of the inverter air conditioners and the total power of the inverter air conditioners of the control areas; and the power of any one inverter air conditioner is controlled to be lower than or equal to the limited power. The power control method and system for the inverter air conditioners are used for control over the air conditioners.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a power control method and system for an inverter air conditioner. Background technique [0002] At present, the phenomenon of peak and valley electricity has widely existed in electricity-consuming countries. Its purpose is to encourage residents to take advantage of the preferential conditions of low-valley electricity prices to consume a large amount of low-peak electricity, such as electric water heaters, air conditioners and other electrical equipment, which not only alleviates the gap between peak power supply and demand, but also promotes Optimized allocation of power resources. As the household appliance with the largest power consumption in the family, how to control the power consumption of the air conditioner during the peak period of power consumption so as to reduce the peak power consumption has become a major problem. [0003] In the prior art, the method...

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Problems solved by technology

[0003] In the prior art, the method of changing the frequency and set temperature of the inverter air conditioner compressor is commonly used at home and abroad to control the power consumption of the inverter air conditioner. However, because the operating frequency of the inverter air conditioner compressor and its power are nonlinear, and each The frequency of the compressor of the air conditioner is different, and its power consumption is also different, so the power of the air conditioner cannot be well controlled by changing the frequency

In addition, the compressor power of an ordinary inverter air conditioner is determined by the difference between the set temperature and the indoor temperature and the change of the indoor temperature. The indoor temperature will be affected by external factors such as the outdoor temperature, the number of people in the room, and whether there is an indoor heater. As a result of the change, the operating power of the compressor also changes, and the power consumption of the inverter air conditioner is not constant.

When the set temperature is changed (increase the set temperature when cooling, and decrease the set temperature when heating), the temperature difference will become smaller, the operating frequency of the compressor will decrease, and the power consumption will decrease. However, as the indoor temperature changes, if the temperature difference becomes If the temperature is too high, the operating frequency of the compressor will also increase, resulting in greater power of the air conditioner, so the power of the air conditioner cannot be well controlled by changing the set temperature of the air conditioner.

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