Energy-saving expense metering method and system applied to central air-conditioning system

Abstract

The invention discloses an energy-saving expense metering method and system applied to a central air-conditioning system. The system comprises an integrated energy meter, a multi-rate electric energy meter, a controller and a computer. The integrated energy meter is used for metering total energy storage amount (X1) of the central air-conditioning system in an energy storage working condition and energy supply amount of all divided time periods in a non-energy-storage working condition. The multi-rate electric energy meter is used for metering total energy storage amount (X2) of the central air-conditioning system, total electricity consumption (W1) and total electricity consumption expense (M1) of all pieces of electric equipment in the energy storage working condition and total electricity consumption (W2) and total electricity consumption expense (M2) of all the pieces of electric equipment in the non-energy-storage working condition. The controller is used for collecting metering data of the integrated energy meter and the multi-rate electric energy meter, using a built-in energy-saving expense calculating scheme for calculating energy-saving expense (S) generated when the central air-conditioning system operates in the energy storage working condition and outputting the energy-saving expense (S) to a display screen of the computer to display the energy-saving expense (S).

Description

technical field [0001] The invention relates to the technical field of electricity bill measurement, and more specifically, relates to an energy-saving cost metering method and system applied to a central air-conditioning system. Background technique [0002] In order to save the operating electricity and cost of the central air-conditioning system, it is common practice to use the central air-conditioning system to generate cold or heat and store them through energy storage devices during valley electricity price periods. During the peak electricity price and the flat electricity price, the cold or heat stored in the energy storage device is released, so as to reduce the operating power of the central air-conditioning system during the peak electricity price and the flat electricity price period, and save operating costs. [0003] At present, the real-time measurement of the energy-saving cost of the central air-conditioning system under energy storage conditions can be rea...

AI Technical Summary

Problems solved by technology

[0004] 1. The energy-saving cost measurement system uses the ratio of the time-sharing energy supply of the central air-conditioning system to the total energy supply to calculate the applied power of the central air-conditioning system at each time period, and does not consider the energy loss during the energy storage process of the central air-conditioning system, resulting in the calculated applied power And the actual cost of energy saving is too large

Images