Power flow control system
A power flow control and controller technology, applied in AC network circuits and AC networks to reduce harmonics/ripples, climate change adaptation, etc. Phase unbalance, increased flexibility, overall cost reduction effect
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[0028] The embodiments of the present invention will be further described below in conjunction with the drawings.
[0029] See figure 1 , A power flow control system, including a parallel-side converter, a series-side converter, a first Y-Δ transformer T1, a second Y-Δ transformer T2, and the parallel-side converter is located between the power grid and the first Y-Δ transformer Between T1, the series-side converter is located between the first Y-Δ transformer T1 and the second Y-Δ transformer T2; the parallel-side converter includes a back-to-back three-phase converter VSC1 and a single-phase converter The converter VSC2 is formed by DC capacitive coupling. The three-phase converter VSC1 is connected to the power transmission line between the grid and the first Y-Δ transformer T1 through the transformer. The single-phase converter VSC2 changes the fundamental wave in the grid into The third harmonic, and the third harmonic current is evenly distributed to the transmission line b...
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