Abstract
In recent years, power systems have gradually become electronically powered, the quality of power in the distribution network presents new features. Although power electronics technology brings qualitative leap to renewable energy, microgrid technology, distributed power supplies, electric vehicles, etc, it also affects the power quality of the distribution network. Discussion on the new characteristics of power quality in distribution network, This paper discusses the new characteristics of power quality of distribution network, such as rapid voltage fluctuation, frequent three-phase unbalance, subsynchronous harmonic caused by disturbance frequency variation, and Ultra harmonics. At the same time, the governance recommendations are elaborated. Combined with existing problems, we will look forward to the development direction of power quality in distribution networks in the future.
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