Metering method for power consumption of multi-connected air conditioner indoor unit

Abstract

The invention belongs to the field of air conditioners, particularly provides a metering method for the power consumption of a multi-connected air conditioner indoor unit, and aims to solve the problem that an existing metering method is tedious to operate and large in deviation. The metering method comprises the following steps of calculating the real-time power NPim (t=k) of a draught fan of themth indoor unit and the standby power DPm (t=k) of an electric control panel based on running data of the mth indoor unit in the current unit period k; calculating the power consumption parameter NPm(t=k) of the mth indoor unit in the current unit period k based on the real-time power and the standby power; calculating the total power consumption parameter ZNPm (t=k) of the mth indoor unit in the current unit period k based on the power consumption parameter NPm (t=k) in the current period k and the power consumption parameter NPm (t=k-1) in the last unit period (k-1); and calculating the total power consumption ZNPm (t=k) of the mth indoor unit in the current unit period k based on the total power consumption parameter ZNPm (t=k) of the mth indoor unit. According to the metering methodfor power consumption of multi-connected air conditioner indoor unit, methods above are adopted without installing a plurality of electric quantity meters in the multi-connected indoor unit, thus being simple in operation and reducing the metering error.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and specifically provides a method for measuring power consumption of internal units of multi-connected air conditioners. Background technique [0002] A multi-connected air conditioner refers to a refrigeration (heat pump) system consisting of one or more outdoor units and multiple indoor unit systems installed in different application spaces. The multi-connected air conditioner system has been widely used in commercial and office places due to its advantages of saving installation space, high load energy efficiency, energy saving and environmental protection, and easy control and management. In commercial buildings, there are often situations where multiple users share one or more sets of multi-connected units, which requires the measurement of cooling / heating consumption by different users and the power consumption of the air supply operation of the internal unit in order to charge fo...

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Problems solved by technology

[0006] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problems of cumbersome operation and large deviation in the existing measurement method, the present invention provides a method for measuring the power consumption of the internal unit of a multi-connected air conditioner, including:

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