Power sensor, also known as power meter probe, is a measuring device that can convert input voltage and current signals into standard outputs that have a fixed functional relationship with active power, reactive power, power factor and other parameters, which is convenient for secondary equipment to use. The following is a detailed explanation of power sensors:
1. Definition and function
Power sensors can not only measure active power and reactive power, but also measure active electric energy and reactive electric energy, and have dual functions. It is usually designed for various single-phase and three-phase lines, and can convert high-frequency electrical signals into electrical signals that can be directly detected through energy.
2. Classification
According to the different output standard quantities, power sensors can be divided into analog output power sensors and digital output power sensors. Analog output power sensors can usually only output one parameter, such as active power or power factor, while digital output power sensors can simultaneously output the required voltage, current, frequency, active power, power factor, harmonics and other parameters.
3. Working principle
The working principle of power sensors is based on the transformation of input voltage and current signals. It converts these signals into standard outputs that have a fixed functional relationship with active power, reactive power and other parameters. The converted DC current or voltage is a linear proportional output and can reflect the transmission direction of the measured power in the line.
IV. Application Scenarios
Power sensors are widely used in various power systems and industrial automation fields to monitor and control the power and energy consumption of power equipment to ensure the stable operation of the power system and efficient energy utilization.
In summary, power sensors are an important measurement device with a wide range of application scenarios and important functions.
