Abstract This paper analyzes the harmonic resonance theory according to the distributed parameter model of the loop feeder. Through the comparisons of the harmonic damping effects between resistive active power filter (RAPF) installed on middle bus and that symmetrically deployed on different locations, this paper proposes a site selection strategy of discrete frequency tuned RAPF to dampen harmonic propagation in loop power distribution systems. Specifically, the proposed site selection strategy notes that if the feeder length is shorter than half wavelength, the optimal installation location should be symmetrical location close to the middle point; otherwise, if the feeder length is longer than half wavelength, the optimal installation location should be symmetrical position which is a quarter wavelength away from the source. Compared with the case when the RAPF with matching impedance is installed on the middle bus of the loop line, it can achieve better harmonic attenuation effect to install discrete frequency tuned RAPF whose conductance is no less than the matching conductance. Moreover, bigger conductance leads to better damping result. Besides, the proposed strategy shows better adaptability to the variations of line parameters. Simulation and experimental results verify the validity of the proposed strategy.
Wang Baocheng,Yang Lili,Han Ruijing等. Site Selection Strategy of Discrete Frequency Tuned Resistive Active Power Filter for Harmonic Damping in Loop Power Distribution Systems[J]. Transactions of China Electrotechnical Society, 2017, 32(4): 241-249.
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