Power calculation method, device and multi-connection system
A multi-connected system and electricity calculation technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems affecting the starting point of the cumulative time of the whole system, estimation errors, etc., achieve the effect of clock unification and improve accuracy
Active Publication Date: 2022-02-01
GREE ELECTRIC APPLIANCES ZHENGZHOU +1
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[0004] However, since the internal and external units of the multi-connected system are controlled by different controllers, if the starting time of the timing is different between different controllers, it will affect the starting point of the cumulative time of the power calculation of the whole system, and then there will be an estimation error for the power measurement of the whole system , in order to achieve the same power accuracy between the estimated power and the power measured by the meter, the clock synchronization between the distributed controllers becomes a key factor affecting the power measurement accuracy of the multi-connected system
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[0026] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
[0027] Meanwhile, it should be understood that, for the convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship.
[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses in any way.
[0029] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considere...
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The disclosure discloses a power calculation method, device and multi-connection system, and relates to the field of air conditioning. The power calculation method includes: acquiring a reference time; calibrating the time information of the external machine controller according to the reference time; sending the reference time to each internal machine controller so that each internal machine controller can calibrate the time information; and The time and power of the external machine controller and each internal machine controller are used to calculate the power of the multi-connected system. The disclosure realizes the unification of the clocks of multiple controllers of the multi-connection system, thereby improving the accuracy of power estimation of the multi-connection system.
Description
technical field [0001] The present disclosure relates to the field of air conditioners, and in particular, to a power calculation method, device and multi-connection system. Background technique [0002] The multi-connection system is a distributed cooling control system for internal and external units. The common electricity metering method is to measure the electricity for the entire multi-connection system by using an electric meter. However, since this measurement method requires an additional electric meter, the measurement cost is high and the installation is complicated. [0003] Based on the fact that the multi-line control system can directly control and collect data such as the operating status of each load and the voltage and current of important loads, the power can be estimated separately through the internal and external machine controllers and accumulated into the estimated power of the whole system, so as to realize low-cost power statistics. Methods. [000...
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IPC IPC(8): G01R22/10
CPCG01R22/10
Inventor 金国华马翠明邓忠文王文灿黄强
Owner GREE ELECTRIC APPLIANCES ZHENGZHOU