Current sensor promotes smart grid upgrade

The increase in the amount of electricity used in the city makes the power supply equipment often in an overloaded pre-installed state, and the power equipment is facing more and more serious challenges. 60% of the electronic equipment's failures come from the power supply. With the increasing seriousness of power supply problems, power supply technology has gradually been taken seriously by the majority of manufacturers, and power supply technologies with sensing, sensing, and sensing have become a trend. Equipment for protecting power supplies has also emerged, detecting current or voltage. The sensor came into being. The current sensor is a sensor that can sense the measured current and convert it into a usable output signal. It is widely used at home and abroad.

Closed-loop current sensor continuously monitors power

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 indispensable component of converters 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.

Current sensor reduces cable load

In the UK, a current sensor suitable for installation on the main line of a 240-600 A substation was born. This sensor monitors the power output of the substation and can reduce the power outage time caused by local grid failures. 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.

Fiber-optic current sensor based on smart grid

The new fiber optic current sensor is the rapid development of smart grid technology. 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.

Industrial upgrades promote current sensor improvements

Driven by the upgrading of China's industrial development, the safety of power equipment is increasingly being used. The current sensor as a tool for both protection and monitoring will play a more important role in the future grid. Compared with similar foreign products, there is still a large gap in the domestic current sensor technology that needs to be compensated and improved.

In China, there are also many new industries emerging that require the support of sensors. Whether for security considerations or market efficiency considerations, current sensors will tend to be more efficient and reliable. Under the requirements of low-carbon environmental protection, miniaturization is also the future. A major trend, which will also promote the domestic sensor manufacturers to invest more experience in the development of new technologies and products. In the near future, current sensors will be widely used in more industries, and will lay the foundation for emerging Internet of Things.