光伏-微型水电电网中非线性负载引起的无功功率和谐波电流补偿
Compensation for reactive power and harmonic current drawn by a non-linear load in a pv-micro hydro grid
AI总结：
本文研究光伏-微型水电电网中非线性负载引起的电能质量问题，提出在公共耦合点集成并联有源电力滤波器，利用瞬时PQ理论和滞环电流控制进行无功与谐波补偿，将THD从7%降至2.96%。
摘要：
本文提出一种仿真方法，通过集成并联有源电力滤波器（SAPF），利用瞬时PQ理论和滞环电流控制带逻辑，提升同时为线性用户负载和非线性工业负载供电的光伏-微型水电电网的电能质量。非线性负载从电源吸收无功功率和谐波电流，从而影响电能质量。在公共耦合点（PCC）集成SAPF可提供无功功率和谐波电流补偿，确保向电网供电的电流保持近似正弦并与有功功率成比例。通过注入等幅反相的谐波分量，SAPF有效地将总谐波失真（THD）从7%降低至2.96%，从而提升光伏-微型水电电网系统的整体电能质量。
英文摘要：
This paper presents a simulation approach to enhance the power quality of a PV-micro hydro grid supplying both linear consumer load and non-linear industrial load by integrating Shunt Active Power Filter (SAPF), utilizing instantaneous PQ theory and hysteresis current control band logic. The non-linear load draws reactive power and harmonic current from the source thereby affecting the power quality. The integration of the SAPF at the point of common coupling (PCC) offers reactive power and harmonic current compensation, ensuring that the current supply to the grid remains nearly sinusoidal and proportional to the active power. By injecting equal and opposite harmonic components, the SAPF effectively reduces Total Harmonic Distortion (THD) from 7% to 2.96%, thereby enhancing the overall power quality of the PV-micro hydro grid system.
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