科研之友
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摘要
Based on the reactive power service capability of photovoltaic system, the influence of photovoltaic power station on its operation energy efficiency after been integrated into the power grid is analyzed. In the case of multiple operating modes and different grid-connected locations, Assuming a variety of output combinations of inverters or SVG, this paper analyzes and calculates the trend of voltage deviation or energy consumption of the system, and demonstrates the comprehensive reactive power service capability of the inverter or SVG of the photovoltaic system and the degree of influence on the energy efficiency of the system operation in different dot accessing power grids. The research shows that the reactive power service ability of inverter or SVG has same influence on the energy consumption of power grid, harmonic THD and voltage deviation change trend. The centralized photovoltaic power station can play a positive role in voltage quality improvement or energy efficiency improvement. The inverter reactive power replacement ability or SVG reactive power service coordination and cooperation can realize the safe and efficient operation of the grid.
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