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首页> 外文会议>2014 IEEE International Conference on System Science ang Engineering >Modeling, control and simulation of grid-connected PV system with D-STATCOM
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Modeling, control and simulation of grid-connected PV system with D-STATCOM

机译：使用D-STATCOM的光伏并网系统的建模，控制和仿真

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摘要

Due to the national subsidy policy and the demand of energy, photovoltaic power generation is growing at a rapid rate all over the world. When new PV installations connect to utility grid, some problems, such as reactive power compensation, voltage stability and power quality, are around the corner. This paper presents a grid-connected PV simulation system with D-STATCOM. By using Matlab/Simulink for modeling PV system, this paper shows I–V and P-V characteristics of PV array, and uses D-STATCOM as the grid-connected converter to realize power coordination, voltage stabilizing and power quality improvement. The basic control strategy is dual-close-loop control strategy. By decoupling active power and reactive power, inner loop control algorithm is used to trace active power and reactive power current separately. Meanwhile, outer loop regulates DC link voltage and grid-connected voltage. The simulation result shows that PV system with D-STATCOM can output active power stably, keep grid-connected voltage steady, and improve power quality of output voltage and current.
机译：由于国家的补贴政策和能源需求，光伏发电在全世界范围内都在快速增长。当新的光伏装置连接到公用电网时，诸如无功补偿，电压稳定性和电能质量之类的问题就迫在眉睫。本文提出了一种采用D-STATCOM的并网光伏仿真系统。通过使用Matlab / Simulink对光伏系统进行建模，显示了光伏阵列的I–V和P-V特性，并使用D-STATCOM作为并网转换器，以实现功率协调，电压稳定和功率质量改善。基本控制策略是双闭环控制策略。通过将有功功率和无功功率去耦，使用内环控制算法分别跟踪有功功率和无功电流。同时，外环调节直流母线电压和并网电压。仿真结果表明，采用D-STATCOM的光伏系统可以稳定输出有功功率，保持并网电压稳定，提高输出电压和电流的电能质量。

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