Method for collecting phase-splitting power parameters of three-phase power

Abstract

The invention discloses a method for collecting phase-splitting power parameters of three-phase power. The method comprises the following steps that: a numerical value of an active register of any phase of power of the three-phase power is read and is sent into an accumulation array; whether the numerical value of the accumulation array is larger than 0.01 kilowatt hour is determined; verification is carried out on active power storage array of the phase power and, if false, an accumulation value of the phase power is read from an EEPROM and verification is carried out; a phase standby power accumulation value is read from the EEPROM and verification is carried out and, if true, the latest phase power verification value is stored into the EEPROM; forward and backward power is determined and if true, the 0.01 kilowatt hour is counted to a phase active array; a latest verification value is stored into a phase power accumulation array; and according to tagged words, addition and subtraction operations are carried out on the active power and the reactive power. Compared with the prior art, the provided method enables power parameters of any phase of the three phase power can be collected.

Description

technical field [0001] The invention relates to an electric energy parameter acquisition method, in particular to a three-phase electric energy phase-separated electric energy parameter acquisition method. Background technique [0002] The chip used in the three-phase energy parameter acquisition device provides active energy pulse output pins and reactive energy pulse output pins. Through these two pins, it is very convenient to measure the combined reactive energy and the combined active energy. However, in many cases, we need to further measure the power parameters of each phase of the three-phase power, which cannot be measured through the active power pulse output pins and reactive power pulse output pins provided by existing chips. [0003] In view of the above problems, it is necessary to improve the existing method for collecting electric energy parameters of three-phase electric energy to solve the above problems. Contents of the invention [0004] Aiming at the ...

AI Technical Summary

Problems solved by technology

However, in many cases, we need to further measure the energy parameters of each phase of the three-phase electricity, which cannot be measured through the active energy pulse output pins and reactive energy pulse output pins provided by existing chips

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