Power System Harmonics

Arrillaga, J.; Watson, N.R.

doi:10.1002/0470871229

Cited by 711 publications

(613 citation statements)

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“…Beberapa upaya yang telah dilakukan untuk pengurangan harmonisa, diantaranya adalah dengan memasang L/C tuned filter, kompensasi fluks magnetik [3], dan juga dilakukan dengan cara menginjeksi harmonisa ke dalam sistem [4]. Kemudian dilanjutkan penelitian tersebut dengan menggunakan injeksi hubungan Z/D [5].…”

Section: Pendahuluanunclassified

Analisis Perbandingan Penggunaan Tipe Penyalaan Kontrol Jarak Sama Dan Sudut Sama Pada Penyearah Terkendali Tiga Phasa

Sudirman¹,

Kurniati²

2010

MST

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AbstrakPenelitian ini bertujuan untuk membandingkan pengaruh tipe penyalaan kontrol jarak sama dan kontrol sudut sama pada penyearah tiga phasa terkendali dengan melihat harmonisa yang ditimbulkan pada input tegangan. Kemudian menghitung efisiensi penyearah dan perbandingan faktor kerja dari kedua tipe kontrol tersebut. Rangkaian penyearah menggunakan filter pasif dengan beban tahanan sebesar 11 ohm dan dianalisis dengan menggunakan simulasi program PSPICE versi 7. Hasil penelitian menunjukkan bahwa penggunaan kontrol jarak sama menimbulkan harmonisa arus masukan pada orde ke-5 dan ke-7 sedangkan pada kontrol sudut sama menimbulkan harmonisa pada orde ke-3, 5 dan ke-7. Pada sisi keluaran tipe kontrol jarak sama menimbulkan riak tegangan pada orde 6, sedangkan pada tipe kontrol sudut sama menimbulkan riak tegangan pada orde ke-2 dan ke-6. Hasil perhitungan riak tegangan yang terjadi sebesar 3,5% dengan efisiensi 99,8% pada kontrol jarak sama, sedangkan pada kontrol sudut sama diperoleh riak tegangan sebesar 4% dengan efisiensi 99.7%. Selanjutnya pada sudut penyalaan 30 0 diperoleh input THD sebesar 50,26% dengan faktor kerja sebesar 0,89 pada tipe kontrol jarak sama, sedangkan pada tipe kontrol sudut sama diperoleh input THD sebesar 53,831% dengan faktor kerja sebesar 0,87. Dari hasil ini menunjukkan bahwa penyalaan thyristor dengan tipe kontrol jarak sama lebih baik dibandingkan dengan tipe sudut sama. AbstractAnalysis of three phase controlled rectifier with the same distance control as compared to the same angle control. This research aim to compare the firing of the same distance and the same angle control at three phase controlled rectifier with seen generated harmonic at input (AC side). Then calculate of rectifier efficiency and power factor comparison from both the control type. The rectifier use passive filter with resistance 11 ohm and is analysed with program simulation using PSPICE version 7.1. Result of research indicate that use of the same distance control generates the 5 th and 7 th harmonics, while the same angle control generates the 3 rd , 5 th and 7 th harmonics at the input (AC side). At the output (DC side), the same distance control type generates the 6 th voltage ripples, while the same angle control generates the 2 nd , and 6 th voltage ripples. The result of calculation of voltage ripples that happened equal to 3.5% with efficiency 99.8% at same distance control, while at the same angle control obtained voltage ripples equal to 4% with efficiency 99.7% . At the firing angle 30 0 obtained by THD input equal to 50.26% with power factor equal to 0.89 at same distance control type, while the same angle control obtained by THD input equal to 53,831% with power factor to 0,87. From this result indicate that the firing of thyristor with the same distance better then is the same angle control.

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Section: Pendahuluanunclassified

Analisis Perbandingan Penggunaan Tipe Penyalaan Kontrol Jarak Sama Dan Sudut Sama Pada Penyearah Terkendali Tiga Phasa

Sudirman¹,

Kurniati²

2010

MST

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“…The harmonic of voltages and currents in power system are generated mainly due to the application of power electronic convertor, switching devices, and transformer's saturation [1]. Power electronic devices show nonlinear load features and thus they create distorted currents even when supplied with a purely sinusoidal voltage.…”

Section: Introductionmentioning

confidence: 99%

“…These distorted currents cause current and voltage distortion throughout the power system. To improve power quality, several methods exist such as the use of higher-pulse converters, the choice of transformer connections, the modification of electric circuit configuration, and the application of active and passive harmonic filters [1]. Among them, passive harmonic filters (PHF) cause low impedance shunt paths for harmonic currents and compensate reactive power through its capacitor at the fundamental frequency.…”

Section: Introductionmentioning

confidence: 99%

A graph search algorithm: Optimal placement of passive harmonic filters in a power system

Aghaei

Dastfan

2015

JAIDM

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The harmonic in distribution systems becomes an important problem due to an increase in nonlinear loads. This paper presents a new approach based on a graph algorithm for optimum placement of passive harmonic filters in a multi-bus system, which suffers from harmonic current sources. The objective of this paper is to minimize the network loss, the cost of the filter and the total harmonic distortion of voltage, and also enhances voltage profile at each bus effectively. Four types of sub-graph have been used for search space of optimization. The method handles standard capacitor sizes in planning filters and associated costs. In this paper, objective function is not differential but eases solving process. The IEEE 30 bus test system is used for the placement of passive filter. The simulation has been done to show applicability of the proposed method. Simulation results prove that the method is effective and suitable for the passive filter planning in a power system.

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“…The use of power electronics produces waveform distortions [3][4][5][6][7]. A waveform conversion from AC to DC, and then from DC to AC is utilized in the schema of a power converter.…”

Section: Introductionmentioning

confidence: 99%

Measurements of harmonic emission versus active power from wind turbines

Yang¹,

Bollen²,

Larsson³

et al. 2014

Electric Power Systems Research

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a b s t r a c tThis paper presents harmonic measurements from three individual wind turbines (2 and 2.5 MW size). Both harmonics and interharmonics have been evaluated, especially with reference to variations in the active-power production. The overall spectra reveal that emission components may occur at any frequency and not only at odd harmonics. Interharmonics and even harmonics emitted from wind turbines are relatively high. Individual frequency components depend on the power production in different ways: characteristic harmonics are independent of power; interharmonics show a strong correlation with power; other harmonic and interharmonic components present various patterns. It is concluded that the power production is not the only factor determining the current emission of a wind energy conversion system.

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Power System Harmonics

Cited by 711 publications

References 0 publications

Analisis Perbandingan Penggunaan Tipe Penyalaan Kontrol Jarak Sama Dan Sudut Sama Pada Penyearah Terkendali Tiga Phasa

Analisis Perbandingan Penggunaan Tipe Penyalaan Kontrol Jarak Sama Dan Sudut Sama Pada Penyearah Terkendali Tiga Phasa

A graph search algorithm: Optimal placement of passive harmonic filters in a power system

Measurements of harmonic emission versus active power from wind turbines

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