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The emission of voltage and current harmonics from power electronic devices causes extra stress of equipment in power systems. Therefore, the need of harmonic distortion measurements is increasing. Harmonic measurements in high or medium voltage power systems with magnetic voltage transformers or capacitive voltage transformers may cause large errors. A new measuring system based on a coupling capacitor...
The network impedance of power systems is an important quantity for many power system calculations. This paper presents a novel method for measuring network impedances of high-voltage (110 kV) power systems by injecting line-to-line test signals. The injected test signals are generated by a medium-frequency converter and fed to grid by a station transformer. During the measurement, we only assess...
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