并网逆变器电网阻抗估计研究进展

Q1 Engineering

电网技术 Pub Date : 2015-02-05 DOI:10.13335/J.1000-3673.PST.2015.02.004

Xie Shao-jun, Ji Lin, Xu Jinming

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引用次数: 7

摘要

在分布式发电系统中，并网逆变器的性能与电网阻抗密切相关。然而，电网阻抗通常随着电网运行条件的变化而变化。因此，准确的电网阻抗估计是实现弱电网逆变器高性能自适应控制的关键技术之一。近年来，许多文献提出并研究了网格阻抗测量方法。然而，不同方法的优缺点并没有得到深入的讨论。为此，本文对网格阻抗测量的各种方法进行了综述。现有的方法主要分为三大类:主动方法、被动方法和准被动方法。分析了各种方法的特点，讨论了各种方法的优缺点和适用范围。最后指出了有待解决的问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Review of Grid Impedance Estimation for Gird-Connected Inverter

The performance of grid-connected inverter is closely related to the grid impedance in distributed power generation systems. However, the grid impedance usually varies with the change of the grid operation condition.Therefore, accurate grid impedance estimation is one of the key technologies to achieve the high performance adaptive control of the inverter which connects to a weak grid. Recently, many literatures proposed and studied the methods for grid impedance measurements. However, the merits and demerits of different methods have not been discussed deeply. For this reason, this paper presents a review of the various methods for grid impedance measurement. The existing methods are classified into three main categories: active methods, passive methods and quasi-passive methods. Moreover, the characteristics of these methods are investigated, and the merits and demerits and suitable application of each method are also discussed. At last, some issues to be solved are pointed out.

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来源期刊

电网技术 Engineering-Mechanical Engineering

CiteScore

7.30

自引率

0.00%

发文量

13735

期刊介绍： "Power System Technology" (monthly) was founded in 1957. It is a comprehensive academic journal in the field of energy and power, supervised and sponsored by the State Grid Corporation of China. It is published by the Power System Technology Magazine Co., Ltd. of the China Electric Power Research Institute. It is publicly distributed at home and abroad and is included in 12 famous domestic and foreign literature databases such as the Engineering Index (EI) and the National Chinese Core Journals. The purpose of "Power System Technology" is to serve the national innovation-driven development strategy, promote scientific and technological progress in my country's energy and power fields, and promote the application of new technologies and new products. "Power System Technology" has adhered to the publishing characteristics of combining "theoretical innovation with applied practice" for many years, and the scope of manuscript selection covers the fields of power generation, transmission, distribution, and electricity consumption.