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首页> 外文期刊>Latin America Transactions, IEEE (Revista IEEE America Latina) >Critical evaluation of the performance of the method of harmonic power flow to determine the dominant source of distortion
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Critical evaluation of the performance of the method of harmonic power flow to determine the dominant source of distortion

机译：对谐波功率流方法的性能进行严格评估，以确定失真的主要来源

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摘要

In many guidelines contained in documents approved by electrical regulation agencies, harmonic distortions appear as an important issue among other indicators of electric power supply quality. In general, these standards consider specific aspects, such as definitions, measurement procedures, and benchmarks. Overcoming challenges related to voltage distortions and establishing ways to determine the responsibility for possible violations of given limits are also important matters. The literature describes procedures to characterize the major responsibility among the agents involved (supplier and consumer) or, in a more advanced way, the individual contributions. One of the simplest and most widely used methodologies for identification of the major source of harmonics consists of determining the direction of harmonic power flow by comparing the fundamental and harmonic power signals. Most commercial power quality measuring equipment has the ability to quantify fundamental and individual harmonic powers. However, this study shows the weaknesses of this method. Theoretical analyses, as well as computational and experimental studies, were performed for a hypothetical electrical arrangement. The electrical network was investigated under different operating conditions, and the power harmonic approach was used to determine the dominant harmonic source. The results were then used to evaluate the effectiveness of the methodology to find the correct response.
机译：在电力监管机构批准的文件中包含的许多指南中，谐波失真似乎是电力供应质量其他指标中的重要问题。通常，这些标准考虑了特定方面，例如定义，测量程序和基准。克服与电压畸变有关的挑战，并建立确定可能违反给定限值的责任的方法也是重要的问题。文献描述了描述相关代理商（供应商和消费者）或个人贡献的主要职责的程序。识别主要谐波源的最简单，使用最广泛的方法之一是通过比较基波和谐波功率信号来确定谐波功率流的方向。大多数商用电能质量测量设备具有量化基本和单个谐波功率的能力。但是，这项研究显示了此方法的缺点。对假设的电气装置进行了理论分析以及计算和实验研究。在不同的工作条件下对电网进行了研究，并使用功率谐波方法确定了主要的谐波源。然后将结果用于评估方法的有效性，以找到正确的响应。

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