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Some previous research based on Fast Fourier Transform (FFT) estimated the damping ratio and frequency oscillation from Eigen value of the matrix associated to a Single Machine Infinite Bus (SMIB) model. Damping constant can be calculated for every 20 minutes cycles. However, it failed to explain how to calculate the damping ratio without associating the system to a SMIB Model. Furthermore, there...
This paper presents a method for tuning power system stabilizer (PSS) parameters to control low-frequency oscillations. The dynamics of low-frequency oscillations can be identified by wide area phasor measurements. Hence, the theory builds a low-order model that reflects the dynamics of the full system, based on observation components that are included in system oscillations. Since the model reflects...
During past years, power systems are continuously expanding with increasing electric power supplies and distribution systems. Accordingly, such systems might be subjected to power system instability depending on their system conditions. Therefore, we have installed Phasor Measurement Unit (PMU) in Japanese universities and constructed analytical system for the power system characteristics. This paper...
The CampusWAMS (campus wide area measurement system) based on phasor measurement units (PMU), which covers ten electric power companies of Japan, has been developed for several years. Based only on practical phasor measurements from the CampusWAMS, the paper presents the analysis of KitaHon HVDC Link for load frequency control of Eastern Japan 50Hz power system. Kita-Hon HVDC Link is practically equipped...
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