Optimal harmonic compensation for grid-connected photovoltaic
This study presents a novel method for optimal harmonic compensation under a limited margin, flexibly adjusting each harmonic compensation coefficient based on its
With the rapid development of renewable energy, large amounts of power need to be transmitted to load centers, and series-capacitor compensation (SCC) plays an important role in renewable power transmission. However, it has been pointed out that SCC interacts with inverters and threatens system stability.
SCC is commonly used for reactive power compensation, which is necessary in extremely weak power grids. However, it has been determined that it affects the control stability of inverters in renewable power systems. The mechanism of instability and solutions for improving that stability were investigated in this paper.
Due to the large distance between centralized renewable power sources and loads centers, grid following inverters generally work with series-compensated transmission lines. As a result, this paper focuses on the effects of SCC on grid following inverters. The stability of grid following inverters is mostly influenced by a weak power grid [ 9, 10 ].
Household PV grid-connected inverters have gained popularity as a means to achieve carbon neutrality. In addition to generating active power, they can utilize the remaining inverter margin for harmonic compensation to improve power quality.
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