Jiangsu Acrel Electrical Manufacturing Co., LTD.
Jiangsu Acrel Electrical Manufacturing Co., LTD.

Breakthrough In Power System Management: Current And Voltage Sensors For Operational Safety

The condition of the power system is very closely related to the national economy and social development. The operation efficiency of power system is highly valued by the country. With the development and progress of science and technology, the power system is becoming more and more complex and the safety requirements are getting higher and higher, so there is an urgent need to develop new and efficient current, voltage and power detection technology equipment to ensure the safety of power system operation.

Traditional Current Sensor Principle And Shortcomings

Traditional current sensors include transformers, Hall sensors, fiber optic grating sensors, etc.. They can use different principles to detect current, each for different situations, and have limitations in terms of convenience.

The transformer is limited by its own electromagnetic induction principle, which can only measure alternating currents, but not DC currents. Moreover, ordinary transformers are generally only suitable for measuring 50 Hz sine waveforms.

Hall sensors use the Hall effect and the magnetic balance feedback principle to measure arbitrary waveforms of current and voltage, and can also measure the more important transient peaks in power systems. However, closed-loop Hall current sensors require a polymagnetic loop.

Fiber grating sensors are suitable for measurements in ultra-high voltage, strong electromagnetic interference and other operating environments. Fiber grating belongs to a narrow band filter. Fiber grating sensors incorporate fiber grating technology into the orbital circuit, but these sensors need to wrap the fiber around the conductor being measured.

Encore Intelligent High-Precision Non-Contact Current And Voltage Sensors To Ensure The Safe Operation Of Power Systems

Power system safety testing is critical and relies on accurate and efficient sensor technology equipment. Visionary high-tech companies have begun to develop and produce more efficient, accurate and convenient sensor technology equipment to ensure the safety of power systems and energy facilities.

The series of power sensor developed and produced by Encore Intelligence are based on Ampere's Law and use ultra-high-precision micro-magnetic based sensors with independent intellectual property rights to measure the magnetic field strength of wires, cables, rails, and other conductive bodies due to current, and then obtain their current values. It does not need the closed-loop Hall current sensor's poly magnetic ring, nor does it need to wrap the optical fiber around the measured conductor like the fiber optic current sensor, so it is extremely convenient to install and use, which truly realizes the non-contact real-time online measurement of AC and DC currents.

At the same time, Ancray Smart series non-contact current sensors combined with series of non-contact voltage sensors, can measure the power on the line and determine its direction. At present, Ancray Smart can provide mA-level, A-level, kA-level, analog and digital, voltage, current, power and other specifications of products, measurement accuracy of 0.1% or more. Current sensors and voltage sensors can be used individually or through CAN bus networking, providing a new choice for the domestic 30-billion-dollar current and voltage testing instrumentation market and further meeting the needs of smart grid and power equipment development.

Ankerys intelligent series of current and voltage sensors can be used in many fields, including high-voltage wire inspection systems, power supply system overload protection systems, smart grid power management and real-time monitoring systems, high-power industrial electrical equipment control and safety protection systems. Specifically can be applied to batteries, photovoltaic batteries, electric vehicle charging piles, motors, inverters, power transformers, new energy vehicles, photovoltaic inverters, wind power, fans, pumps, rail transportation, naval integrated power and power propulsion, aviation power supply and other high-precision detection, but also as a variable frequency power measurement verification device current measurement reference.