Novel electric energy measuring and electric energy quality monitoring device and monitoring method thereof

Abstract

The invention discloses a novel electric energy measuring and electric energy quality monitoring device. The device comprises a voltage detection circuit, a current detection circuit, an analog signalconditioning circuit, an AD conversion circuit, a digital sampling circuit, a physical layer transceiving circuit, a controller circuit, a storage circuit, a watchdog circuit and a power circuit; thepower circuit supplies power; the voltage and current detection circuits detect voltage and current signals and upload the signals to the controller circuit through the analog signal conditioning circuit and the AD conversion circuit; the digital sampling circuit samples digital signals and uploads the signals to the controller circuit through the physical layer transceiving circuit; the storagecircuit stores parameters; the watchdog circuit provides reset signals; the controller circuit measures electric energy and monitors electric energy quality. The invention further provides a monitoring method of the novel electric energy measuring and electric energy quality monitoring device. The method comprises the steps of performing initialization, obtaining analog quantity and digital quantity signals, measuring electric energy, monitoring electric energy quality and storing parameters. Electric energy metering and electric energy quality monitoring can be performed at the same time.

Description

technical field [0001] The invention specifically relates to a novel electric energy metering and electric energy quality monitoring device and a monitoring method thereof. Background technique [0002] With the development of national economy and technology and the improvement of people's living standards, electric energy has become an indispensable secondary energy source in people's production and life, bringing endless convenience to people's production and life. [0003] Energy metering is an important function of power systems. Most of the currently used electric energy information collection terminals use metering chip solutions. At present, the metering chip solutions are mature, stable, and low-cost, and have been widely used in the industry. However, the metering chip solution also has certain limitations: first, the accuracy of the metering chip is average, and it is difficult to meet the higher-level metering accuracy and stability requirements; secondly, the me...

AI Technical Summary

Problems solved by technology

However, the metering chip solution also has certain limitations: first, the accuracy of the metering chip is average, and it is difficult to meet the higher-level metering accuracy and stability requirements; secondly, the metering chip has poor flexibility and low speed, making it difficult to achieve more advanced High-end metering algorithms, modern signal processing and other complex algorithms; finally, metering chips have a single function, generally only serial communication, no SPI, USB, I2C, network and other interfaces and no large-capacity storage capacity, which is not conducive to transmission and storage of large flows data, making it impossible to perform harmonic, flicker, and unbalanced power quality monitoring and analysis requirements in the background, while traditional devices with high-precision metering and processing capabilities, complex power quality monitoring functions, and both analog and digital sampling capabilities are complex High density and many devices are not conducive to the development of equipment miniaturization

Images