Power meters (also called energy meters or power measuring meters) are devices used to measure, monitor and manage power parameters in power systems. They play an important role in power systems, industrial control, energy management and other fields. The following are the main uses and functions of power meters:
I. Main uses
1. Power metering
Measure power consumption (active power, reactive power).
Used for electricity bill settlement (such as electricity metering for homes, factories, and commercial buildings).
2. Power parameter monitoring
Real-time monitoring of parameters such as voltage, current, power (active power, reactive power, apparent power), power factor, frequency, etc.
Help users understand the operating status of the power system.
3. Energy management
Analyze power usage and optimize energy consumption.
Support the implementation of energy-saving measures and reduce electricity costs.
4. Fault diagnosis and alarm
Detect abnormal conditions in the power system (such as overvoltage, undervoltage, overcurrent, and low power factor).
Provide alarm function to help quickly locate and solve problems.
5. Data recording and analysis
Record historical data, support trend analysis and report generation.
Provide data support for power system optimization and planning.
6. Remote monitoring and control
Support remote data reading and parameter setting.
Suitable for smart grid and automation system.
∥. Main functions of power meter
1. Basic measurement function: voltage (V), current (A), power (kW, kVA), electric energy (kWh, kVarh).
Power factor (PF), frequency (Hz).
2. Advanced functions
Harmonic analysis: detect harmonic content in the power grid.
Demand measurement: record maximum demand to help optimize power load.
Time-of-use metering: support peak, valley and flat electricity price billing.
Event recording: record abnormal events in the power system (such as power outages, overloads).
3. Communication function
Support multiple communication protocols (such as Modbus, RS485, Profibus, Ethernet).
Integrate with SCADA system and energy management system (EMS).
4. Display and operation
LCD or LED display screen, real-time display of power parameters.
Supports key operation or remote setting.