Sensors breed new products

With the continuous advancement of technology, the types of sensors are increasing. At the same time, China's urban electricity consumption has increased significantly, and power supply equipment is often in a state of overloaded pre-installation. Therefore, sensors that detect current or voltage have emerged.

Closed Loop Current Sensor With the development and development of new energy technologies, the application of current sensors in the wind power industry is particularly important. It is an essential component of the converter in wind turbines.

In the converter, a very large number of small or PCB current sensors are required, which belong to a closed-loop control system to ensure that the inverter can respond quickly. The simultaneous action of the inverter and the generator ensures that the continuous power of the grid is provided over a wide range of wind speeds after the wind turbine is started, until the turbine is stopped at the upper wind speed.

In order to achieve the best working condition of the driver, it is necessary to continuously measure the current in operation. The performance of the current sensor directly affects the quality and response time of the circuit control, which is why it can be widely used in the wind power industry. . At the same time, closed-loop current sensors not only have high bandwidth and fast response time, but also have advantages such as good linearity and high accuracy.

Fiber-optic current sensor A new type of fiber-optic current sensor is the technological product of the rapid development of smart grids. China introduced the XDGDL-1 fiber-optic current sensing system, which realizes all-digital closed-loop control of the pipeline current sensing system. It is characterized by good stability, linearity, and high sensitivity, and it meets the requirements for high-precision measurement of a large range of range.

At the same time, the system has developed a telescopic structure that can be wound in the field. It is easy to install and can avoid the interference of stray magnetic fields. The measurement error of the bus eccentricity is less than plus or minus 0.1%, and a high-precision signal conversion scheme is realized for the rectifier. Control equipment provides high-precision analog signals and standard digital communication interfaces.

The current sensor is also useful for reducing the cable load, monitoring the power output of the substation, and reducing the outage time caused by local grid failure. The current sensor can perform current monitoring on the power supply cable. If the cable outlet is overloaded, these current sensors can transfer part of the load to other phases or be newly laid cables to protect the safe use and operation of the cable.

With the continuous development and upgrading of smart grids, current sensors are constantly improving and improving in terms of technology, design, and utility, and they have a major role in the current measurement of metallurgy and chemical industries.