Smart charging of PEVs to reduce the power transformer loss of life

2017 ◽  
Author(s):  
A. Sanchez ◽  
A. Romero ◽  
G. Ratta ◽  
S. Rivera
Keyword(s):  
Power Transformer ◽  
Loss Of Life ◽  
Smart Charging

Impact of Harmonics on Power Transformer Losses and Capacity Using Open DSS

2019 ◽  
Vol 20 (4) ◽  
Author(s):  
Jaspreet Singh Maan ◽  
Sanjeev Singh ◽  
Amanpreet Singh
Keyword(s):  
Distribution System ◽  
Power Transformer ◽  
Electronic Devices ◽  
Source Distribution ◽  
Accelerated Ageing ◽  
Power Electronic ◽  
Loss Of Life ◽  
Distribution Transformers ◽  
Capacity Reduction ◽  
Ieee Standard

Abstract Harmonics in the power system are increasing due to increased use of power electronic devices in load. Power electronic devises results in nonlinear loading of the distribution system network creating problem of harmonics. Harmonics effects the distribution transformers in distribution system as well as Power Transformer at the grid substation resulting in more losses, production of extra heat, reduction in efficiency and accelerated ageing of insulation. In this paper a feeder of PSPCL is modelled using EPRI open source distribution system simulator (Open DSS) and effect of harmonics due to nonlinear loading measured from distribution system on the power transformer at grid substation supplying the modelled feeder is evaluated for capacity reduction and loss of life as per IEEE standard C57.110–1998.

scholarly journals Análise da perda de vida de transformadores de potência usando Séries Temporais e Teoria de Confiabilidade

1995 ◽  
Vol 17 (17) ◽  
pp. 43
Author(s):  
Maria Emilia Camargo ◽  
Luis Felipe Dias Lopes
Keyword(s):  
Time Series ◽  
Power Plant ◽  
Power Transformer ◽  
Reliability Theory ◽  
Daily Temperature ◽  
Power Transformers ◽  
Loss Of Life ◽  
Time Period ◽  
Time Series Methodology

In this paper, the time series methodology and reliability theory have been applied to analyze the loss of life of power transformers, when subjected to over load. The daily temperature of power transformer coil of 100 MV A collected from the Termoeletric Power Plant of Candiota, Candiota, RS have been used. The time period analyzed is from December, 1992 to October, 1993.

Effect of No-load and Load Condition on Transformer Sound

2018 ◽  
pp. 11-15
Author(s):  
Dr. Hitesh Paghadar
Keyword(s):  
Experimental Study ◽  
Power Transformer ◽  
Load Condition ◽  
Noise Pollution ◽  
Sound Level ◽  
Measurement Scale ◽  
Dominant Factor ◽  
Public Attention ◽  
Level Measurement ◽  
Human Ear

Increasing environment noise pollution is a matter of great concern and of late has been attracting public attention. Sound produces the minute oscillatory changes in air pressure and is audible to the human ear when in the frequency range of 20Hz to 20 kHz. The chief sources of audible sound are the magnetic circuit of transformer which produces sound due to magnetostriction phenomenon, vibration of windings, tank and other structural parts, and the noise produced by cooling equipments. This paper presents the validation for sound level measurement scale, why A-weighted scale is accepted for sound level measurement, experimental study carried out on 10MVA Power Transformer. Also presents the outcomes of comparison between No-Load sound & Load sound level measurement, experimental study carried out on different transformer like - 10MVA, 50MVA, 100MVA Power Transformer, to define the dominant factor of transformer sound generation.

PERAN DESIGNATED PERSON ASHORE (DPA) DALAM PENGOPERASIAN KAPAL YANG AMAN SESUAI KETENTUAN NASIONAL DAN INTERNASIONAL

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Suganjar Suganjar ◽  
Renny Hermawati
Keyword(s):  
Marine Environment ◽  
Emergency Preparedness ◽  
Safety Management ◽  
Shipping Industry ◽  
Safe Operation ◽  
International Regulation ◽  
Loss Of Life ◽  
Shipping Company ◽  
Environmental Protection Policy ◽  
Human Injury

<p><em>Safety management in the shipping industry is based on an international regulation. It is International Safety Management Code (ISM-Code) which is a translation of SOLAS ‘74 Chapter IX. It stated that t</em><em>he objectives of the Code are to ensure safety at sea, prevention of human injury or loss of life, and avoidance of damage to the environment, in particular, to the marine environment, and to property.it is also</em><em> requires commitment from top management to implementation on both company and on board. The implementation of the ISM-Code is expected to make the ship’s safety is more secure. The ISM-Code fulfillment refers to 16 elements, there are; General; Safety and Environmental Protection Policy; Company Responsibility and Authority; Designated Person(s); Master Responsibility and Authority; Resources and Personnel; Shipboard Operation; Emergency Preparedness; Report and Analysis of Non-conformities, Accidents and Hazardous Occurrences; Maintenance of the Ship and Equipment; Documentation; Company Verification, Review, and Evaluation;  Certification and Periodical Verification; Interim Certification; Verification; Forms of Certificate. The responsibility and authority of Designated Person Ashore / DPA in a shipping company is regulated in the ISM-Code. So, it is expected that DPA can carry out its role well, than can minimize the level of accidents in each vessels owned/operated by each shipping company.</em></p><p><em></em><strong><em>Keywords :</em></strong><em> ISM Code,</em><em> </em><em>Safety management, </em><em>Designated Person Ashore</em></p><p> </p><p> </p><p>Manajemen keselamatan di bidang pelayaran saat ini diimplementasikan dalam suatu peraturan internasional yaitu <em>International Safety Management Code</em> (<em>ISM-Code</em>) yang merupakan penjabaran dari <em>SOLAS 74 Chapter IX</em>-<em>Management for the safe operation of ships</em>. Tujuan dari <em>ISM-Code</em> <em>“The objectives of the Code are to ensure safety at sea, prevention of human injury or loss of life, and avoidance of damage to the environment, in particular, to the marine environment, and to property”</em> dan  <em>ISM-Code</em> menghendaki adanya komitmen dari manajemen tingkat puncak sampai pelaksanaan, baik di darat maupun di kapal.  Pemberlakuan <em>ISM-Code</em> tersebut diharapkan akan membuat keselamatan kapal menjadi lebih terjamin. Pemenuhan <em>ISM-Code</em> mengacu kepada 16 elemen yang terdiri dari ; umum; kebijakan keselamatan  dan perlindungan lingkungan; tanggung jawab dan wewenang perusahaan; petugas yang ditunjuk didarat; tanggung jawab dan wewenang nahkoda; sumber daya dan personil; pengopersian kapal; kesiapan menghadapi keadaan darurat; pelaporan dan analisis ketidaksesuaian, kecelakaan dan kejadian berbahaya; pemeliharaan kapal dan perlengkapan;  Dokumentasi; verifikasi, tinjauan ulang, dan evaluasi oleh perusahaan; sertifikasi dan verifikasi berkala; sertifikasi sementara; verifikasi; bentuk sertifikat. Tugas dan tanggungjawab <em>Designated Person Ashore/DPA </em>didalam suatu perusahaan pelayaran<em>, </em>telah diatur di dalam <em>ISM-Code.</em>  Sehingga diharapkan agar DPA dapat melaksanakan peranannya dengan baik, sehingga dapat menekan tingkat kecelakaan di setiap armada kapal yang dimiliki oleh setiap perusahaan pelayaran.</p><p class="Style1"><strong>Kata kunci</strong> : <em>ISM Code</em>, Manajemen keselamatan, <em>Designated Person Ashore</em></p>

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