Comparison of various methods for determining direction of harmonic distortion by measuring in point of common coupling

Bazina, Mario; Tomiša, Tomislav

doi:10.1109/energycon.2014.6850457

Cited by 9 publications

(9 citation statements)

References 12 publications

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“…Існуючі методи ідентифікації й оцінки впливу джерел спотворення синусоїдальності напруги у СЕП у своїх базових математичних моделях орієнтовані на використання схем заміщення Нортону або Тевеніна [5][6]. У комбінації з локальним підхід організації вимірів і одержання вихідних даних про параметри режиму роботи мережі в точці загального приєднання (ТЗП) це приводить до невизначеності розв'язку задачі яка розглядається, яке обумовлене перевищення кількості невідомих над кількістю незалежних рівнянь.…”

Section: аналіз останніх досліджень і публікаційunclassified

Identification and Evaluation of Harmonic Voltage Sources in Power Supply Systems

Kalyuzhniy

2021

MEC

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Non-sinusoidal voltage in power supply systems leads to economic losses that need to be distributed and compensated. This problem is solved on the basis of the problem of identification and evaluation of the influence of voltage distortion sources. To date, existing methods for identifying and assessing the impact of harmonic voltage sources have significant limitations of practical implementation. This is due to their basic mathematical model and local approach to measuring the parameters of the network. In the given research the new mathematical model of identification and an estimation of harmonic voltage sources that is focused on the distributed measuring system is presented. The criterion for identifying harmonic voltage sources is the distorting nodal current. To adequately determine it, it is necessary not only to measure the parameters of the network mode in the base nodes by the currents of the higher harmonic components, but also to control the structure and parameters of the replacement circuit of the entire power supply system. To achieve this goal, it is proposed to use a distributed measuring system, which is based on vector measurement systems and control systems. The estimation of the influence of harmonic voltage sources is directly proportional to the distorting nodal current, where the coefficient of proportionality is either mutual or intrinsic resistance of power supply systems, that connects the location of the distortion source and the place for which its influence is estimated. In order to control the influence of measurement errors and determine the parameters of circuits for replacing elements of the power supply system, the method and algorithm for identifying and assessing the impact of harmonic voltage sources should be developed based on the principle of excluding one of the voltage distortion sources.

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Section: аналіз останніх досліджень і публікаційunclassified

Identification and Evaluation of Harmonic Voltage Sources in Power Supply Systems

Kalyuzhniy

2021

MEC

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“…Several methods, such as the Harmonic Vector Method [13], RLC method [14], and the Superposition [13] method, are proposed in literature to assess harmonic emission [15] from nonlinear loads. Harmonic active power is often used in these methods [16], [17].…”

Section: Direction Of Harmonic Emissionmentioning

confidence: 99%

“…With the load and network impedances obtained, (13) to (15) are used to calculate the load or customer side contributions towards the total harmonic current measured at the PCC. Firstly, the resistive component is calculated based on active power equations.…”

Section: Rlcmentioning

confidence: 99%

A discriminative approach to harmonic emission assessment

Peterson

Rens

Botha

et al. 2015

2015 IEEE International Workshop on Applied Measurements for Power Systems (AMPS)

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With the onset of renewable power sources onto the network, such as Photovoltaic power plants contributing to Total Harmonic Distortion (THD) in voltage, a methodology to quantify their contribution to the THD in voltage at the point of common coupling is needed. This paper give an overview of existing theory on the quantification of harmonic emission and in particular the method proposed by the CIGRE/CIREDC4.109 working group. It is concluded that the application of this method by single-point measurements can be improved upon by using synchronized multiple-point measurements. Discrimination to identity the harmonic currents regarded as emission is attempted in the assessment of harmonic emission at a PV plant feeding into a 22 kV distribution network

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“…These methods and techniques have been in discussion and scrutinise on certain issues. Hence, researchers have done some review and comparison on different methods and techniques [7], [21], [27]- [31].…”

Section: Introductionmentioning

confidence: 99%

Harmonic Source Detection Methods: A Systematic Literature Review

2019

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Ensuring the quality of power supply is a main target of the power utility companies worldwide. Harmonic distortion is one of the power quality problems that can result either from upstream (utility side) through background harmonic, downstream (customer's side) through non-linear loads, or renewable energy generators. The detection of harmonic sources at the point of common coupling (PCC) is a major concern for both utilities and customers. Various methods have been proposed since the 1990s to be used for harmonic source detection. These methods have been classified into three categories based on the direction of active power flow, reactive power, and voltage-current ratio. In this paper, a systematic literature review is done on the state of the art of current research on the harmonic source detection methods, in order to select the method that gives better practical and commercial results to be used when multiple customers are connected at the PCC. This systematic literature review recognized that most studies concentrated only on harmonic source detection between a customer and utility but the practical power system has multiple customers connected to the PCC with different load conditions. Therefore, the results obtained from this paper review will be useful for researchers and engineers working in the modern grids, who aim to develop a practical and commercial method to quantify the harmonic contribution for different customers and utility.INDEX TERMS Harmonic distortion, harmonic source detection, renewable energy sources and distributed power generation.

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Comparison of various methods for determining direction of harmonic distortion by measuring in point of common coupling

Cited by 9 publications

References 12 publications

Identification and Evaluation of Harmonic Voltage Sources in Power Supply Systems

Identification and Evaluation of Harmonic Voltage Sources in Power Supply Systems

A discriminative approach to harmonic emission assessment

Harmonic Source Detection Methods: A Systematic Literature Review

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