Analysis of Line Loss Change Trend of Large-scale New Energy Access Distribution Network Under New Power System
Distributed photovoltaic power generation is characterized by randomness,volatility,and regionality,which may cause power fluctuations and other impacts when connected to the distribution network,further affecting the power loss of the distribution network.However,existing grid line loss calculation and analysis have not considered the impact of large-scale new energy access on line loss.If the existing methods are used for calculation and access work,it will cause significant errors.This article focuses on the explosive growth of distributed photovoltaic power generation in Guizhou in recent years and the current grid-connected situation,analyzing the characteristics of distributed photovoltaic power generation and the power consumption characteristics of the transformer area,and conducting theoretical calculations and simulation analysis on the impact of photovoltaic access on the line loss of the transformer area.Taking the actual transformer area with photovoltaic grid access as an example,the article conducts relevant verifications in terms of access locations and access capacity through historical data comparison and analysis of field application situations.Finally,it summarizes the impact trends of distributed photovoltaic access to the distribution network on the line loss of the branch line and transformer area and proposes corresponding strategies,providing a reference basis for the plan of the 10 kV and below distributed photovoltaic access system in Guizhou Power Grid.
new power systemnew energypower distribution networkline losschanging trend
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