scholarly journals Effect Of Value Of Resistance Announcement To Thd In Electrical System Faculty Of Engineering University Udayana Denpasar

2018 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
I. G. N. Janardana ◽  
I W Arta Wijaya ◽  
I. N. Karnata Mataram
Keyword(s):  
Negative Impact ◽  
Electrical Power ◽  
Harmonic Distortion ◽  
Air Conditioner ◽  
Electrical System ◽  
Nonlinear Load ◽  
Grounding System ◽  
Ground Resistance ◽  
Standard Value ◽  
College Of Engineering

AC (Air Conditioner), TV, lamp, LCD and others are categorized as nonlinear load generating harmonics. The high content of harmonics has a negative impact on the quality of electrical power. The result of measurement of THD (Total Harmonic Distortion) current at 9 ohm ground resistance value at phase R = 9,8%, phase S = 11,0%, phase T = 7,5% exceed from standard value IEEE 519 Year 2014 equal to ? 5 , 0%, THD measurement of phase voltage R = 1.4%, phase S = 1.2%, phase T = 1.3%, meet the maximum THDv standard of ? 5%. To overcome this problem, it was observed the effect of the value of ground resistance to THDi and THDv on the electrical system of the College of Engineering Faculty of Denpasar. This method of analysis with ETAP software simulation. With grounding system ? 3 ohm only effect on current THD only with decreasing value of THDi become: phasa R = 4,2%, phase S = 5% and phase T = 4,3%, meaning with grounding system ? 3 ohm THD current fulfill IEEE 519 - 2014 standard <5%. while THD voltage has no effect (THD value of fixed voltage). Several studies have suggested that THD repair can be done by filter installation. However in this study the installation of grounding system ? 3 ohms can reduce the value of current THD.

scholarly journals Analysed power quality of electrical system ahts vessel

2020 ◽  
Vol 9 (8) ◽  
pp. e836986151
Author(s):  
Agus Dwi Santoso ◽  
Ferry Budi Cahyono ◽  
Widyo Tri Laksana ◽  
Yosi Nurfalah
Keyword(s):  
Power Quality ◽  
Electrochemical Impedance ◽  
Electrical Power ◽  
High Harmonic ◽  
Harmonic Distortion ◽  
Electrical Equipment ◽  
Computational Techniques ◽  
Electrical System ◽  
Utility Systems

A number of power quality issues including electrical harmonics, poor power factor, and voltage instability and imbalance impact on the efficiency of electrical equipment. To support that equipment operates optimally, electrical power is generated must be have good quality. This study has a purpose to examine the power quality of electrical system AHTS (Anchor Handling Tug Supply) vessel. This research was done by quantitative method. Computational techniques used by the software of Total Harmonic Distortion (THD), which shares characteristics and Electrochemical Impedance Spectroscopy (EIS). The result of this analysis indicated that Electrical system in VM INPOSH REGENT have quality power very good of utility systems during full way condition, however during maneuver, there was a particularly high harmonic from non-linier devices used as motor control, which functional a role propulsion. Based on the result above, it can be concluded that after filtering so that harmonic can correct until perimeter secure ABS standard, system is very good during maneuver long site and maneuver on DP system.

scholarly journals GROUNDING METHODOLOGY IN A 550 kV AC POWER TRANSMISSION LINE IN THE AMAZON - A CASE STUDY

2021 ◽  
Vol 9 (11) ◽  
pp. 147-159
Author(s):  
Franklin Barbosa Carvalho ◽  
Manoel Henrique Reis Nascimento
Keyword(s):  
Power Distribution ◽  
Power Transmission ◽  
Electrical Power ◽  
Power Lines ◽  
Electrical System ◽  
Grounding System ◽  
Sequence Of Events ◽  
Implementation Costs ◽  
Atmospheric Discharges

Atmospheric discharges are indispensable for the electrical sector due to their responsibility on the shutdown of the power lines, what may trigger a sequence of events that led the interconnected electrical system to collapse. The aim of this case study is to demonstrate the development of a viable methodology in order to reduce the resistance values of the grounding system of the power lines, reducing shutdown occurrences due to returning disruptive discharges, or backflashover, mitigating the damages caused to the electrical system and to society, in order to improve the quality of the electrical power distribution. Considering the factors of implementation costs, technical environmental viability, the encompassment of this solution for other structures lines, and the reduction of the implementation percentage, it was concluded that the most adequate solution to implement a more robust grounding system in the transmission power lines is the solution 03 tested on the tower 585, with a reduction of 66,98%.

scholarly journals Studi Analisis Pengaruh Filter Aktif Berbasis Fuzzy Logic Controller Untuk Mereduksi Harmonisa Akibat Beban Non Linier

2019 ◽  
Vol 6 (2) ◽  
pp. 24
Author(s):  
G. A. M. Dwi Ade Saputra ◽  
I Wayan Rinas ◽  
I Made Suartika
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Negative Impact ◽  
Harmonic Distortion ◽  
Electrical Equipment ◽  
Sine Wave ◽  
Active Filter ◽  
Active Filters ◽  
Nonlinear Load ◽  
Simulation Results

Electrical equipment categorized as the nonlinear load will cause harmonics. Harmonic is a periodic distortion of the sine wave that can cause a negative impact on electronic equipment components. One way to improve power quality is to reduce harmonics using harmonic filters. In this study, an analysis of the system was carried out before adding a filter and after adding an active filter based on a fuzzy logic controller. The application of the fuzzy logic method on filters functions to reduce over switching in the inverter so that it can reach the lowest THDi value. THDi simulation results when the existing conditions are in phase R, S, T; at 14%, 17%, 14%. When the active filter condition is without control, the THDi percentage at the R phase is 6%, the S phase is 6%, the T phase is 4%. In the active filter conditions based on the fuzzy logic controller the percentage of THDi in phase R, S, T; is 0.9%, 0.9, 1%. Based on the simulation results introduced in the active filter based fuzzy logic controller is able to reduce harmonic distortion to the lowest value, so the use of fuzzy logic in active filters can be used in the harmonic filtering process in the electrical system.

scholarly journals Harmonics Analysis and Enhancement of Power Quality in Hybrid Photovoltaic and Wind power System for Linear and Nonlinear Load using 3 Levels Inverter

2021 ◽  
Vol 10 (1) ◽  
pp. 296-307
Author(s):  
Atul Kumar ◽  
Imran Khan
Keyword(s):  
Solar Wind ◽  
Power System ◽  
Power Quality ◽  
Electrical Power ◽  
Harmonic Distortion ◽  
Electrical Energy ◽  
Energy System ◽  
Quality Analysis ◽  
Electrical Power System ◽  
Nonlinear Load

The emergent use of non-conventional energy resources in electrical power grid has initiated new challenge for the service load as concern to voltage balance, power quality issues and effective energy operation. Solar/ wind hybrid RES deliberated as the furthermost promising sources. Nevertheless standalone operations of distributed energy sources such as solar and wind not make sure of reliable power production principally owing to the randomness over the solar irradiance and accessibility of the wind. Hence, a combination of wind and solar energy production configuration can plan a highly reliable source of electrical energy. In This article, multi-level inverter (3 levels inverter) based grid tied hybrid solar- wind energy system based on a 3 level inverter is presented with the mitigation of power quality problems. In this work, analysis on simulation model is conceded to determine source current and voltage and percentage of total harmonic distortion. In particular, the power quality analysis is performed in grid tied hybrid solar and wind electrical power system using 3 level inverter.

Analisis Total Harmonic Distortion (THD) dan Arus Harmonik Akibat Penggunaan Lampu Hemat Energi (LHE) dan Light-Emitting Diode (LED) secara Kolektif Pada Jaringan Tegangan Rendah

2021 ◽  
Vol 6 (1) ◽  
pp. 54
Author(s):  
Eva Magdalena Silalahi ◽  
Bambang Widodo ◽  
Robinson Purba
Keyword(s):  
Energy Saving ◽  
Power Factor ◽  
Low Voltage ◽  
Negative Impact ◽  
Light Emitting Diode ◽  
Electrical Power ◽  
Harmonic Distortion ◽  
Non Linear ◽  
Quality Of Electric Power

Currently, people are increasingly using energy saving lamp (LHE) and LED because of their energy saving and low power consumption. But the use of LHE and LED in large quantities can reduce the quality of electric power. This is because LHE and LED are classified as non-linear loads which are a source of harmonic distortion for low-voltage power lines. Harmonic distortion occurs due to non-linear load currents that experience distortion or defects. Based on this, this study aims to investigate the effect of the collective use of LHE and LEDs on the quality of electrical power, such as: harmonic levels, power factor, and the resulting harmonic current and voltage waveforms. The results of this study indicate that the simultaneous use of LHE and LED with a total of 60 pieces causes distortion of the current waveform with THDi of 63.97% exceeding the standard value of IEEE Std 519-2014, with dominant harmonic currents in the 3rd order with a THDi of 74% and order 5 with a THDi of 37.6% and a THDv value of 2.44%, still below the 5.0% standard of IEEE Std 519-2014. This high THDi value has a negative impact on the low PF value of 0.722, which does not meet the power factor requirements of ≥ 0.85 according to PLN standards. And if the true power factor (TPF) value is calculated, the TPF value is 0.608 which is lower than the PF value of 0.722. The results obtained from the Matlab simulation show conformity to the results obtained from experimental measurements in the laboratory, namely: the simulated harmonic waveform approximates the measured harmonic waveform.

Ant Colony Algorithm (ACO) Applied for Tuning PI of Shunt Active Power Filter (SAPF)

2021 ◽  
Vol 17 (2) ◽  
pp. 204-211
Author(s):  
Raheel Jawad ◽  
Rawaa Jawad ◽  
Zahraa Salman
Keyword(s):  
Ant Colony Algorithm ◽  
Electrical Power ◽  
Harmonic Distortion ◽  
Electrical Energy ◽  
Active Power ◽  
Ant Colony ◽  
Electrical Strength ◽  
Shunt Active Power Filter ◽  
Active Power Filters ◽  
Non Linear

In the present-day decade, the world has regarded an expansion in the use of non-linear loads. These a lot draw harmonic non-sinusoidal currents and voltages in the connection factor with the utility and distribute them with the useful resource of the overall performance of it. The propagation of these currents and voltages into the grids have an effect on the electricity constructions in addition to the one of various client equipment. As a result, the electrical strength notable has come to be critical trouble for each client and distributor of electrical power. Active electrical electricity filters have been proposed as environment splendid gear for electrical power pinnacle notch enchantment and reactive electrical strength compensation. Active Power Filters (APFs) have Flipped out to be a possible wish in mitigating the harmonics and reactive electrical electricity compensation in single-phase and three-phase AC electrical energy networks with Non-Linear Loads (NLLs). Conventionally, this paper applied Ant Colony Algorithm(ACO) for tuning PI and reduce Total Harmonic Distortion (THD). The result show reduces THD at 2.33%.

Full scale co-digestion of organic waste

2000 ◽  
Vol 41 (3) ◽  
pp. 195-202 ◽  
Author(s):  
H. Kübler ◽  
K. Hoppenheidt ◽  
P. Hirsch ◽  
A. Kottmair ◽  
R. Nimmrichter ◽  
...  
Keyword(s):  
Negative Impact ◽  
Biogas Production ◽  
Electrical Power ◽  
Nutrient Content ◽  
Primary Energy ◽  
Gas Production ◽  
Waste Streams ◽  
Volatile Solids ◽  
Operation Results ◽  
The Impact

Operational results of a co-digestion facility were assessed over a period of 18 months. The organic fraction of municipal solid waste (OFMSW) contains a considerable amount of contaminants and grit (up to 6% w/w). A BTA-Pulper efficiently treated the different waste streams and converted a high amount of volatile solids (VS) into the digester feedstock. The seasonal fluctuations of the waste composition significantly influenced the biogas production. The impact of this seasonally variant degradability of VS had to be considered by evaluating the operation results. The waste streams investigated did not show any negative impact on digester performance. The hydraulic retention time (HRT) in the digester considerably affected the VS-reduction. Despite a considerable decrease of VS-degradation a reduction of HRT from 14 to 8 days slightly improves the gas production rate (GPR). An activated sludge system efficiently reduced the pollution of the effluent.The nutrient content of the anaerobic compostwas favourable and the content of pollutants was low. The facility produced surplus electrical power up to 290 MJ/t. An overall energy balance shows that the facility substitutes primary energy.

Design of Fault Diagnosis Expert System for Certain Type of Aircraft Electrical Power

2012 ◽  
Vol 466-467 ◽  
pp. 1186-1190
Author(s):  
Jun Bin Cao ◽  
Er Min Guo ◽  
Yan Li
Keyword(s):  
Fault Diagnosis ◽  
Expert System ◽  
Electrical Power ◽  
Fault Models ◽  
Electrical System ◽  
Diagnosis System ◽  
Fault Structure ◽  
Fault Diagnosis System ◽  
Fault Mechanism ◽  
Analytical Technology

In order to diagnose and exempt the fault of aircraft electrical system accurately and fast, on the basis of analyzing the lost mode and fault mechanism of certain aircraft electrical system, fault structure are built and structure are built and fault models are analyzed by adopting the analytical technology based on regular fault structure. Two induction mechanisms, namely directional and anti-directional inference are introduced and the component methods are studied based on the knowledge corpus of data corpus technique. The result shows the inference results of fault diagnosis system are in accordance to reality and improve the intelligentized level of fault diagnosis system for aircraft electrical power.

scholarly journals Electrical system design of solar powered electrical recreational boat for Indonesian waters

2018 ◽  
Vol 67 ◽  
pp. 04011
Author(s):  
Sunaryo Sunaryo ◽  
Adri Wirawan Ramadhani
Keyword(s):  
Solar Energy ◽  
Fossil Fuel ◽  
Electrical Power ◽  
Electrical Energy ◽  
Green Energy ◽  
Solar Panels ◽  
Electrical System ◽  
Literature Study ◽  
The Government ◽  
Solar Powered

Indonesia has more than 17,000 islands and has plenty of beautiful beaches and underwater spots which have great potential for maritime tourism. Tourism was ranked 3rd on Indonesia's foreign income and plays an important role for the country’s ecomony. Despite having potential advantages, the government has not yet maximized its efforts to develop the attractiveness of its maritime tourism. Beside the beautiful spots Indonesia is also blessed with all year long sun shine, which could be tapped as renewable and green energy as substitution to fossil fuel. Refer to these great advantages of natural resources the research was aimed to support the government’s program in developing its maritime tourism and to promote the use of green and renewable energy by designing a solar-powered tourism recreational boat which has 12 meters of length. The paper is focused on the design of solar energy and its electrical system, which includes conversion of solar energy to electrical energy and store it in the battery, the required electrical power is also predicted based on the appliances and equipment installed in the boat, the optimum attachment of solar panels on the boat structure is also calculated. All the methods and information we use are obtained from literature study, discussion with experts, and surveys to Jagur as solar-powered electric boat from Universitas Indonesia.

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