A Method for Analyzing Harmonic Distribution in A.C. Power Systems

Mahmoud, Aly A.; Shultz, Richard D.

doi:10.1109/tpas.1982.317235

Cited by 101 publications

(23 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fig. 7 4 Value of 17 (%) respectively produced by Tables I-IV. THDi(0) 'I2 2 + I3 2 + 14 12 + I5 l2 + X Table + Table 11 Zo Table III A 5 Value of I11 (%) respectively produced by Tables I-IV. Table + Table 11 < Table III <6\ Table IV '\! _" Tables I-IV. j0…”

Section: Discussionmentioning

confidence: 99%

“…The study of harmonic components is conventionally based on a deterministic approach [4]. This method has two primary defects: (1) the varying characteristics of the harmonics have been neglected and the analyzed results are too conservative; (2) the harmonic components in actual power systems are continuously varying with time but the selected parameters of this approach are fixed and the analyzed results can not reflect the actual variations of system characteristics.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A study on randomly varying harmonic currents and total harmonic distortion of currents in power systems

Wang

Liu

2005

2005 International Conference on Future Power Systems

View full text Add to dashboard Cite

Harmonic analysis is an important application to power systems and an efficient approach to evaluate the injected total harmonic distortion (THD) of currents flowing into a power system due to the summation of randomly varying harmonic currents produced by AC-to-DC power converters is presented in this paper. A probabilistic model is established to derive the magnitude of the injected harmonic currents using the expected value and variance of the harmonic current sources. The simulated results using Monte Carlo simulation are compared with the ones of the proposed approach to validate the proposed scheme. This paper presents the analyzed results of statistical harmonic currents generated by ten AC-to-DC power converters with 4 different ranges of firing angle. The individual harmonic currents and total harmonic distortion of currents generated by converters are also examined.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A study on randomly varying harmonic currents and total harmonic distortion of currents in power systems

Wang

Liu

2005

2005 International Conference on Future Power Systems

View full text Add to dashboard Cite

show abstract

“…Model 4 In this model, the DC resistance is used to estimate the resistance under harmonics [10]. The series impedance in this case can be derived as…”

Section: Modelmentioning

confidence: 99%

The Effect of Network Modelling on Harmonic Propagation Studies in Power Electronics Rich Transmission Networks

Zhu¹,

Bećirović²,

Milanović³

2018

11th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2018)

View full text Add to dashboard Cite

This paper investigates the effect of transmission lines/cables and transformers modelling on harmonic propagation studies in power electronics rich transmission networks. It compares the available models of lines and transformers, and formulates nine case studies by pairing different models. Probabilistic harmonic propagation studies are then carried out considering different harmonic injection by renewable energy sources (wind and PV plants) under different operating conditions. Total harmonic distortion (THD) at critical buses in the network is calculated and the effect of different models of lines and transformers used on recorded 95 percentile of THD at critical buses is assessed. The analysis is carried out on the modified IEEE 68 bus test network.

show abstract

“…alstmutlon system, requires the identification of the major harmonic producing loads in that system, the determination of the magnitudes and phase angles of the injected harmonic currents by these loads and the analysis of harmonic propagation in the system [2,3].…”

mentioning

confidence: 99%

Impact of Electrical Harmonics on The Efficiency of Energy Consumption of Air Conditioning Systems

Basoudan

Hegazy

2002

ERJ. Engineering Research Journal

View full text Add to dashboard Cite

Harmonics injected to the power system by various equipments represent a burden on the system. The increase in the r.m.s current and therefore, the power consumption due to harmonics is one of its negative consequences. The identification of harmonic sources, the representation of the harmonics and the analysis of the behavior of the equipments with the existence of the harmonics show that a significant increase in these equipment consumption is due to the harmonics. The load distribution in Saudi Arabia has indicated that air conditioning consumes about 70% of the load in residential, commercial and governmental sectors. Therefore, the analysis of the impact of the harmonics on the energy consumption of air conditions can verify the benefit gained by increasing the efficiency of these systems with harmonic damping. This paper presents the results of the harmonic measurements conducted for different type of air conditions in nurnber of loads. It indicates an increase in the consumption of these system due to harmonics. The results show the degree of the harmonic level and therefore, the effect on the equipment efficiency. The issue of electric power quality has captured the attention of electric engineering researchers in recent years [I]. The factors that define the quality of electrical services include, voltage regulation, voltage flickering, service continuity and harmonic distortion. The assessment of the Manuscript received from Dr. Omar Basoudan

show abstract

A Method for Analyzing Harmonic Distribution in A.C. Power Systems

Cited by 101 publications

References 6 publications

A study on randomly varying harmonic currents and total harmonic distortion of currents in power systems

A study on randomly varying harmonic currents and total harmonic distortion of currents in power systems

The Effect of Network Modelling on Harmonic Propagation Studies in Power Electronics Rich Transmission Networks

Impact of Electrical Harmonics on The Efficiency of Energy Consumption of Air Conditioning Systems

Contact Info

Product

Resources

About