Patent ID: 7502698

Claim:
A power consumption measuring device, which is provided at each consumer, which has a plurality of CPUs for measuring a base voltage and a double-high voltage of power supplied to each consumer through a single phase three-wire and for obtaining total power consumption of each consumer comprising clocking process for clocking a standard time; data collection unit time setting process for setting a data collection unit time; electrical power integration time setting process for setting an electrical power integration time; first instantaneous electrical power value obtaining process for obtaining a first instantaneous electrical power value w 1 consumed at the base voltage at an interval of the data collection unit time; second instantaneous electrical power value obtaining process for obtaining a second instantaneous electrical power value w 2 consumed at the base voltage at an interval of the data collection unit time; base voltage instantaneous electrical power obtaining process for obtaining a base voltage instantaneous electrical power based on the first instantaneous electrical power value w 1 and the second instantaneous electrical power value w 2 obtained by the first instantaneous electrical power value obtaining process and the second instantaneous electrical power value obtaining process at an interval of the data collection unit time; double-high voltage instantaneous electrical power obtaining process for obtaining a double-high voltage instantaneous electrical power at an interval of the data collection unit time; base voltage watthour obtaining process for obtaining a base voltage watthour based on the base voltage instantaneous electrical power obtained by the base voltage instantaneous electrical power obtaining process and the data collection unit time; first storing process for storing an added value cumulatively added the base voltage watthour obtained by the base voltage watthour obtaining process until the integration time as a base voltage power consumption for an integration time with a standard time and cumulatively added base voltage watthour data; double-high voltage watthour obtaining process for obtaining a double-high voltage watthour based on the double-high voltage instantaneous electrical power and the data collection unit time; second storing process for storing an added value cumulatively added the double-high voltage watthour obtained by the double-high voltage watthour obtaining process until the integration time as a double-high voltage power consumption for an integration time with a standard time and cumulatively added double-high voltage watthour data and watthour data storing term setting process for setting a watthour data storing term for more than predetermined days; characterized by processing the above processes separately in the plurality of CPU.