Electric energy metering method for bidirectional intelligent electric meter based on power factors

Abstract

The invention provides an electric energy metering method for a bidirectional intelligent electric meter based on power factors. The bidirectional intelligent electric meter is arranged, and the bidirectional intelligent electric meter comprises a voltage acquisition circuit, a current acquisition circuit, an electric energy chip, an MCU (Micro-programmed Control Unit) chip, a liquid crystal display device and a serial port communication device, wherein the voltage acquisition circuit and the current acquisition circuit are connected with the electric energy chip respectively; the voltage acquisition circuit and the current acquisition circuit are used for transmitting acquired information to the electric energy chip respectively; the electric energy chip is connected with the MCU chip; the electric energy chip and the MCU chip transmit information to each other; the liquid crystal display device and the serial port communication device are connected with the MCU chip respectively and are in bidirectional communication with the MCU chip. The electric energy metering method for the bidirectional intelligent electric meter is characterized by comprising the following steps: step 1, firstly, initializing; and reading initial positive and negative electric energy stored by an EEPROM (Electrically Erasable Programmable Read-Only Memory) in the MCU chip.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation smart home, in particular to a power factor-based bidirectional smart meter electric energy measurement method. Background technique [0002] With the development of industry and the change of the global energy structure, human beings are worried about the depletion of fossil energy, energy security and environmental degradation, which has led to an increase in the demand for clean and renewable energy. The development of new renewable energy has been valued by countries all over the world. As a rich, green, environmentally friendly and non-polluting renewable energy, solar energy is increasingly favored by people. [0003] As a big energy-consuming country, our country is vigorously developing solar energy, and the photovoltaic industry is developing rapidly with the support of government policies. As an emerging technology, smart home with household photovoltaic power generation sys...

AI Technical Summary

Problems solved by technology

[0004] At present, there are proposals for the two-way electricity metering method of the smart meter through the judgment of the power factor, but there is still no good specific implementation plan, and it can support users with distributed power generation to be connected to the grid

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