Voltage Amplitude Measurement Techniques for Power System Protection and Control Applications

This paper presents a comprehensive review of six techniques that are widely used for voltage amplitude measurement. The performances of these techniques are investigated and compared under different test scenarios according to the IEEE standard C37.118, including amplitude modulation, frequency ramp, magnitude jump, and harmonic distortion, in addition to noise and voltage unbalance tests. These case studies evaluate the performance of each amplitude measurement technique focusing on transient response, steady-state accuracy, and computational complexity. The results indicate that the Adaline approach performs well in presence of noise and harmonics and leads to a low computational burden. Therefore, it is a suitable candidate for real-time amplitude measurement in power system protection and control applications.