Three-phase electric quantity calculation method and apparatus thereof
A technology of three-phase current and three-phase voltage, which is applied in the field of electric power, can solve the problems of low degree of intelligence of the power grid, wiring errors, and failure to correct in real time, and achieve the effect of high degree of intelligence
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[0053] Example one
[0054] This embodiment provides a three-phase electric energy calculation method, which is completed by a three-element electric energy meter. The structure of an electric energy measurement chip in the three-phase electric energy meter is as follows Figure 5 (Where, such as Figure 5 The power metering sub-module and the electric energy metering sub-module in can be collectively referred to as the electric energy metering module) as shown in the hardware structure diagram of the phase error correction sub-module image 3 As shown, the specific structure of the reverse correction sub-module is as follows Figure 4 Shown as image 3 As shown, the voltage phase error correction is composed of three multiplexers 301, 302, 303 and the U channel selection module 304; the current phase error correction is composed of three multiplexers 305, 306, 307 and the I channel selection module 308 composition. Voltage multiplexers 301, 302, and 303 select the voltage channe...
Example Embodiment
[0055] Example two
[0056] This embodiment provides a three-phase power calculation device, the device such as Image 6 Shown, including:
[0057] The wrong connection detection module 61 is used to detect the angle and amplitude of three-phase voltage and three-phase current, compose a vector diagram according to the angle and amplitude of the three-phase voltage and three-phase current, and judge the three-phase electricity meter according to the vector diagram wiring;
[0058] The error correction module 62 is used to adjust the wiring of the three-phase electric energy meter to the correct wiring according to the wiring when judging the wiring error,
[0059] The electric energy measurement module 63 is used to measure the electric energy of the three-phase electric energy meter;
[0060] The wrong connection detection module 61 specifically includes:
[0061] The angle measurement sub-module 611 is used to detect the angle of the three-phase current and voltage;
[0062] The ampl...
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