What is the application and prospect of sensor technology in power grid?

Sensor refers to a device or equipment that can sense the specified measured signal and convert it into usable signal according to certain rules. A sensor usually consists of a sensitive element that directly responds to the measurement signal, a conversion element that generates a usable signal, and a corresponding electronic circuit. At present, sensors used in power grid include traditional sensors, optical fiber sensors and intelligent sensors. Traditional sensors are based on electromechanical measurement, while optical fiber sensors are based on optical measurement. Optical fiber sensor is not interfered by electromagnetic field, and can realize long-distance and low-loss transmission, which is an ideal choice for power equipment monitoring application. Intelligent sensor has network communication function and certain self-programming ability, and integrates new technologies such as neural network and multi-sensor information fusion, with high cost performance, high integration, small size and convenient installation and maintenance. Easy to realize fault detection; It has software and hardware for intelligent data exchange and remote control.

Therefore, intelligent sensors have broad application prospects in equipment condition monitoring, real-time measurement, disaster prevention and mitigation. Sensor technology has developed from simplification in the past to integration, miniaturization and networking. With the development of smart grid, sensor technology will play an increasingly important role in all aspects of smart grid applications. The sensor measurement system consists of sensors, signal conditioning circuits, display or recording instruments, power supply, etc. In the power grid environment, there are mainly the following aspects that may affect the performance of the sensor: In the power grid environment, there is strong electromagnetic interference, and whether the sensor can work normally is the key. Signal processing ability of conversion element, measuring circuit and conditioning circuit: In the power grid environment, the measurement signal processing and amplification of each module will be affected by electromagnetic interference, so the measurement signal processing. Anti-interference ability of each functional module and circuit between modules: In the power grid environment, each functional module is affected by various factors, and its anti-interference ability and working accuracy are reduced.

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