What Are the Applications and Principles of Smart Meters?
Principle:
Smart meter is an advanced metering device that collects, analyzes and manages electric energy information data based on modern communication technology, computer technology and measurement technology. The basic principle of a smart meter is: relying on an A/D converter or a metering chip to collect the user's current and voltage in real time, and perform analysis and processing through the CPU to achieve forward and reverse, peak-to-valley or four-quadrant energy calculations. Further, the content such as the electric quantity is output through communication, display and other means.
Application use:
(1) Energy efficiency monitoring and management
By feeding back the energy consumption information provided by the smart meter to the user, the user can be prompted to reduce energy consumption or change the way of energy utilization. For households equipped with distributed power generation equipment, it can also provide users with reasonable power generation and power consumption schemes.
(2) User energy management
Through the information provided by the smart meter, a user energy management system can be built on it, so as to provide energy management services for different users (residential users, commercial users, industrial users, etc.). In the indoor environment control (temperature, humidity, lighting, etc.) ), while reducing energy consumption as much as possible to achieve the goal of reducing emissions.
(3) Energy saving
Provide users with real-time energy consumption data, promote users to adjust their electricity consumption habits, and timely detect abnormal energy consumption caused by equipment failures. Based on the technology provided by smart meters, power companies, equipment suppliers and other market players can provide users with new products and services. For example, different types of time-of-use network tariffs, power contracts with repurchase, spot price power contracts, etc.
(4) Smart home
Smart home refers to the connection of different devices, machines and other energy-consuming devices in the home in a network. It is controlled based on the needs and behavior of residents, the temperature outside, and other parameters. It can realize the interconnection of heating, alarm, lighting, ventilation and other systems, so as to realize the remote control of home automation and home appliances and other equipment.
(5) Preventive maintenance and failure analysis
The measurement function of smart meters helps to implement preventive maintenance of distribution network components, energy meters and user equipment. For example, voltage waveform distortion, harmonics, unbalance and other phenomena caused by power electronic equipment faults, ground faults, etc. are detected. Measurement data can also help the grid and users analyze grid component failures and network losses.
(6) Prepaid
Compared with traditional prepayment methods, smart meters can provide lower cost, more flexible and friendly prepayment methods.
