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China Southern Power Grid has triumphantly unveiled the world's pioneering set of ±800kV Ultra-High Voltage (UHV) Direct Current (DC) quantum current sensors, which have successfully passed technical evaluations. These sensors leverage the exceptional quantum properties of diamonds to deliver a broad range of measurements with unparalleled precision, achieving an accuracy of six parts per ten thousand across the spectrum of 1mA to 10kA. This groundbreaking innovation addresses the long-standing challenge of non-intrusive current measurement in high-voltage environments characterized by powerful magnetic fields. The deployment of these sensors in ultra-large AC-DC hybrid power grids signifies a monumental advancement in China's quantum precision measurement sector.
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