通过逆变器连接分布式发电机的对谐波和不平衡电流补偿的广义方法

OPAL-RT

A Generalized Approach for Harmonics and Unbalanced Current Compensation through Inverter Interfaced Distributed Generator
通过逆变器连接分布式发电机的对谐波和不平衡电流补偿的广义方法

Harmonics and unbalanced current compensation in the distribution grid has become a major concern due to connections of nonlinear and unbalanced loads and high penetration of renewable energy sources. To tackle this problem, the increasing integration of inverter interfaced distributed generation (DG) may actually be considered able to provide ancillary service for power quality support, if controlled and regulated properly. The challenging part consists of precisely extracting the current to be compensated in a fast dynamics and accurately tracking the compensation reference as close and as fast as possible. Most of the existing control methods are developed for selected harmonics compensation, thus not appropriate for the scenarios with wide range of harmonics due to the increasing implementation complexity. Therefore, this work proposes an approach to compensate harmonics and unbalance in a generalized way aiming to correctly compensate wide range of harmonics with less complexity and computation effort. Simulation and hardware-in-the-loop (HIL) experiment results are provided to validate the proposed approach

由于非线性不平衡负载与高渗透新式可再生能源的连接，分布电网中的谐波和不平衡电偶补偿已经成为一个主要问题。为了解决它，越来越多的集成接口逆变器分布式发电（DG）被认为将会为能源质量支持提供辅助服务。难点在于尽可能接近和快速的精确提取电流，快速动态补偿并精确追踪补偿参照。大多数现存控制方法是针对选择性谐波补偿开发的，由于日益增长的操作复杂性这些方法并不适用于广泛谐波。因此，这篇文章提出了一种补偿谐波和不平衡电流的广义方法，旨在正确补偿大范围谐波，并降低复杂性和计算工作。文章还提供了方针和半实物仿真测试结果来验证这一提出的方法。

' y+ X1 s9 ~# D$ E/ t  i$ q原文链接：
http://www.opal-rt.com/technical-document/generalized-approach-harmonics-and-unbalanced-current-compensation-through-invert