scholarly journals SIMULASI GANGGUAN VOLTAGE SAG DAN VOLTAGE SWELL PADA JARINGAN 20 KV MENGGUNAKAN MATLAB SIMULINK

2018 ◽  
Vol 8 (2) ◽  
pp. 1-11
Author(s):  
Mustofa Ihwanudin
Keyword(s):  
Voltage Sag ◽  
Matlab Simulink ◽  
Voltage Swell

Pada jaringan distribusi sering muncul gangguan yang bisa mengakibatkan penurunan kualitas daya, diatara penyebab penurunan kualitas daya adalah voltage sag dan voltage swell. Gangguan jenis ini dapat mengakibatkan gagal operasi peralatan terutama yang menggunakan komponen elektronik daya. Penelitian berupa simulasi untuk menggambarkan terjadinya voltage sag dan voltage swell yang disebabkan gangguan fasa ke tanah dan pelepasan beban yang di variasi dengan sambungan trafo distribusi yang berbeda. Simulasi dilakukan menggunakan software matlab simulink. Hasilnya model simulasi mampu menggambarkan sinyal voltage sag  akibat hubung singkat satu fasa, dua fasa, tiga fasa ke tanah dan sinyal voltage swell akibat pelepasan beban.

scholarly journals SIMULASI GANGGUAN VOLTAGE SAG DAN VOLTAGE SWELL PADA JARINGAN 20 KV MENGGUNAKAN MATLAB SIMULINK

2018 ◽  
Vol 8 (2) ◽  
pp. 1-15
Author(s):  
Mustofa Ihwanudin
Keyword(s):  
Voltage Sag ◽  
Matlab Simulink ◽  
Voltage Swell

Pada jaringan distribusi sering muncul gangguan yang bisa mengakibatkan penurunan kualitas daya, diatara penyebab penurunan kualitas daya adalah voltage sag dan voltage swell. Gangguan jenis ini dapat mengakibatkan gagal operasi peralatan terutama yang menggunakan komponen elektronik daya. Penelitian berupa simulasi untuk menggambarkan terjadinya voltage sag dan voltage swell yang disebabkan gangguan fasa ke tanah dan pelepasan beban yang di variasi dengan sambungan trafo distribusi yang berbeda. Simulasi dilakukan menggunakan software matlab simulink. Hasilnya model simulasi mampu menggambarkan sinyal voltage sag  akibat hubung singkat satu fasa, dua fasa, tiga fasa ke tanah dan sinyal voltage swell akibat pelepasan beban.

scholarly journals SIMULASI GANGGUAN VOLTAGE SAG DAN VOLTAGE SWELL PADA JARINGAN 20 KV MENGGUNAKAN MATLAB SIMULINK

2018 ◽  
Vol 8 (2) ◽  
pp. 1-15
Author(s):  
Mustofa Ihwanudin
Keyword(s):  
Voltage Sag ◽  
Matlab Simulink ◽  
Voltage Swell

Pada jaringan distribusi sering muncul gangguan yang bisa mengakibatkan penurunan kualitas daya, diatara penyebab penurunan kualitas daya adalah voltage sag dan voltage swell. Gangguan jenis ini dapat mengakibatkan gagal operasi peralatan terutama yang menggunakan komponen elektronik daya. Penelitian berupa simulasi untuk menggambarkan terjadinya voltage sag dan voltage swell yang disebabkan gangguan fasa ke tanah dan pelepasan beban yang di variasi dengan sambungan trafo distribusi yang berbeda. Simulasi dilakukan menggunakan software matlab simulink. Hasilnya model simulasi mampu menggambarkan sinyal voltage sag  akibat hubung singkat satu fasa, dua fasa, tiga fasa ke tanah dan sinyal voltage swell akibat pelepasan beban.

Analysis of AC-AC Converter Based Dynamic Voltage Restorer for Maintaining Power Quality in the Transmission Line

2016 ◽  
Vol 1 (3) ◽  
pp. 501
Author(s):  
Tamilvanan G. ◽  
Mahendran S.
Keyword(s):  
Power System ◽  
Power Quality ◽  
Pulse Width Modulation ◽  
Voltage Sag ◽  
Time Duration ◽  
Dynamic Voltage Restorer ◽  
Unbalanced Voltage ◽  
Nominal Voltage ◽  
Dynamic Voltage ◽  
Voltage Swell

<p>In the power system the major issue is to maintain the power quality .The term of power quality is to maintain the disturbance less voltage to the power system. The voltage disturbance mainly caused by voltage sag, voltage swell and harmonics presented in the system. If the system voltage is going below to the nominal voltage, then it is called as voltage sag. These power quality (PQ) events typically last for less than one second. If the system voltage is going above the nominal voltage, there it is called as voltage swell. The AC-AC converter based DVR is proposed. It can properly compensate for unlimited time duration, balanced, and as well as unbalanced voltage sag by observing the power from the grid. The pulse width modulation technique is used to triggering the switches. Only by the simple Bidirectional switches were used for generate the compensation voltage.</p>

scholarly journals Power Quality Improvement using D-STATCOM with Instantaneous Symmetrical Component Theory

2020 ◽  
Vol 9 (4) ◽  
pp. 1263-1266
Keyword(s):  
Quality Improvement ◽  
Power Quality ◽  
Control Technique ◽  
Voltage Sag ◽  
Matlab Simulink ◽  
Voltage Dip ◽  
Component Theory ◽  
Symmetrical Component ◽  
Power Quality Improvement ◽  
Static Compensator

A technique is introduced to improve the voltage sag under sudden changes in load. The proposed technique is implemented by D-STATCOM (Distribution static compensator) and it is controlled by ISCT (Instantaneous Symmetrical Component Theory). Due to sudden changes in load, the voltage dip occurs at the time of switching of loads. At this time, the control technique generates reference currents and hysteresis block compares these currents with the reference currents and generates the pulses to D-STATCOM. Implementation of system along with compensation is carried out in MATLAB/SIMULINK

scholarly journals A Novel Scheme of Multiple Identification of Faults in the Transmission Line

2020 ◽  
Vol 9 (9) ◽  
pp. 108-116
Keyword(s):  
Transmission Line ◽  
Power Quality ◽  
Power Supply ◽  
Intelligent System ◽  
Voltage Drop ◽  
Fault Analysis ◽  
Matlab Simulink ◽  
Current Voltage ◽  
Power Quality Disturbance ◽  
Voltage Swell

Recognition and arrangement of current-voltage, power fluctuations are critical functions for the safety of the power system (PS). Many perturbations of power quality (PQ) are unpredictable and ephemeral, and the demand for voltage and current recognition and arrangement is confirmed. By using Fast Fourier transform, expert systems, and neural networks, certain intelligent system technologies dominate fault analysis. As expected, there are five types of issues that include sag and swell, ripple, transient fluctuation, interruption and natural waveform. In this paper, we study the transmission line faults for voltage drop, voltage swell, and transient voltage. Power supply and traffic transmission leakage have been major problems for electricity providers and consumers. Much of the disturbance is non-stationary and intermittent, needing specialized methods and techniques for PQ disturbance research. This article provides a full collection of MATLAB / Simulink models to simulate different energy efficiency disturbances. This paper implements power quality disturbance in the model Matlab/ Simulink. The model provided can be used to simulate various disturbances of energy quality and waveforms for analysis and research into power quality, and to help to develop educational programs and understand the energy quality. This would concentrate on what are PQ problems and current approaches to evaluate and classify such problems.

scholarly journals UPQC Based Power Quality Improvement

2020 ◽  
Author(s):  
iftikhar manzoor
Keyword(s):  
Quality Improvement ◽  
Power Quality ◽  
Power Factor ◽  
Power Factor Correction ◽  
Voltage Sag ◽  
Power Quality Improvement ◽  
Voltage Swell ◽  
Power Quality Conditioner

UPQC Based power quality conditioner covers all power quality problems. Problems covers by UPQC are Voltage Sag, Voltage Swell, voltage imbalance, Power factor correction, harmonics mitigation.

scholarly journals Power quality improvement of smart microgrids using EMS-based fuzzy controlled UPQC

2019 ◽  
pp. 1181-1197 ◽  
Author(s):  
AHMED A. HOSSAM-ELDIN ◽  
AHMED A. MANSOUR ◽  
MOHAMMED EL-GAMAL ◽  
KARIM H. YOUSSEF
Keyword(s):  
Power Generation ◽  
Power Quality ◽  
Distribution Systems ◽  
Current Control ◽  
Operating Conditions ◽  
Superior Performance ◽  
Voltage Sag ◽  
Nonlinear Load ◽  
Wide Range ◽  
Voltage Swell

The prevalent power quality problems in smart microgrids and power distribution systems are voltage sag, voltage swell, and harmonic distortion. The achievement of pure sinusoidal waveform with proper magnitude and phase is currently a great research and development concern. The aim of this paper is to evaluate and mitigate the smart microgrid harmonics, voltage sag, and voltage swell throughout a 24-h cycle, taking into consideration the variation in solar power generation due to changes in irradiation received by photovoltaic cells, the variation in wind power generation due to changes in wind speed, and the variation of linear and nonlinear load profiles during the day’s cycle. The mitigation of the power quality issues manifested in current harmonics, voltage sag, and voltage swell is achieved through the implementation of a new fully fuzzy controlled unified power quality conditioner (UPQC). It is controlled by an energy management system (EMS). This paper introduces a new control system for the UPQC using full fuzzy logic control. Moreover, fuzzy control is used in current control instead of proportional integral controllers so that it has acceptable performance over a wide range of operating points. The novel approach of an EMS-connected UPQC activates the UPQC at the required time only into the grid. This approach has many benefits by increasing the UPQC lifetime. The effect of the proposed system on the aforementioned issues has been validated through simulation by MATLAB/Simulink. The results are compared with those obtained by conventional methods. The results verify the superior performance of the proposed UPQC to mitigate the problems of current total harmonic distortions, voltage sag, and voltage swell under different operating conditions during the monitoring period.

Mitigation of Voltage Sag And Voltage Swell By Dynamic Voltage Restorer

2019 ◽  
Author(s):  
Pujarchana Swain ◽  
Basanta K. Panigrahi ◽  
Rama Prasanna Dalai ◽  
Jyotiranjan Mohnaty ◽  
Sidhanta S. Medinray ◽  
...  
Keyword(s):  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Voltage Swell
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