“Under the promotion of the "dual carbon" policy, the proportion of centralized photovoltaic power stations in China has been increasing year by year. However, due to inaccurate reactive power compensation of the line, the electricity cost for power factor adjustment exceeds the standard, which affects economic benefits. The article analyzes the factors that lead to exceeding the standard and proposes solutions and operational suggestions, providing reference for improving the economic benefits of centralized photovoltaic power plants.”