Exploring the Optimizations for Main Harmonic Filtering for Power Systems

MATEC Web of Conferences Pub Date : 2023-01-01 DOI:10.1051/matecconf/202338602005

Yushuo Zhao

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Abstract

As the global demand for sustainable and environmentally friendly energy supply continues to increase, photovoltaic technology, as an important form of new energy, has received extensive attention. Photovoltaic grid-connected system is currently the most widely used form of photovoltaic power generation system. It converts direct current into alternating current and injects it into the grid to meet the power demand of users. However, the power grid imposes a series of requirements on grid-connected photovoltaic systems, one of which is the handling of harmonic problems. This article will focus on harmonic generation and how to perform THD (Total Harmonic Distortion) mitigation. As the key equipment of photovoltaic grid-connected system, inverter plays an important role in harmonic filtering. With a brief introduction to inverter-related THD. In this paper, by exploring how to optimize harmonic filtering to improve the performance and reliability of grid-connected photovoltaic systems, it is found that the method of suppressing THD by changing the PMW modulation is simple in calculation, easy to implement, and has high output waveform quality. And the method of suppressing THD by changing the equipment can reduce the harmonic quality.

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电力系统主谐波滤波优化研究

随着全球对可持续和环境友好型能源供应需求的不断增加，光伏技术作为一种重要的新能源形式受到了广泛关注。光伏并网系统是目前应用最广泛的光伏发电系统形式。它将直流电转换成交流电注入电网，以满足用户的用电需求。然而，电网对并网光伏系统提出了一系列要求，其中之一就是处理谐波问题。本文将重点介绍谐波的产生和如何执行THD(总谐波失真)缓解。逆变器作为光伏并网系统的关键设备，在谐波滤波中起着重要的作用。简要介绍逆变器相关的THD。本文通过探索如何通过优化谐波滤波来提高并网光伏系统的性能和可靠性，发现通过改变PMW调制来抑制THD的方法计算简单，易于实现，且输出波形质量高。通过改变设备来抑制THD的方法可以降低谐波质量。

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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来源期刊

MATEC Web of Conferences

自引率

0.00%

发文量

342

审稿时长

6 weeks

期刊介绍： MATEC Web of Conferences is an Open Access publication series dedicated to archiving conference proceedings dealing with all fundamental and applied research aspects related to Materials science, Engineering and Chemistry. All engineering disciplines are covered by the aims and scope of the journal: civil, naval, mechanical, chemical, and electrical engineering as well as nanotechnology and metrology. The journal concerns also all materials in regard to their physical-chemical characterization, implementation, resistance in their environment… Other subdisciples of chemistry, such as analytical chemistry, petrochemistry, organic chemistry…, and even pharmacology, are also welcome. MATEC Web of Conferences offers a wide range of services from the organization of the submission of conference proceedings to the worldwide dissemination of the conference papers. It provides an efficient archiving solution, ensuring maximum exposure and wide indexing of scientific conference proceedings. Proceedings are published under the scientific responsibility of the conference editors.