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شبیه سازی اماده برق قدرت با گمز، متلب، GAMS، MATLAB، مطلب، MATHLAB، دیگسایلنت، پی اسکد،PSCAD، DIGSILENT، EMTP، ATP و ... ترجمه ت

شبیه سازی های آماده مقالات برق قسمت 5 (جدید ها)

نویسنده :هادی
تاریخ:1395/10/25-16:47




شبیه سازی های آماده مقالات برق قسمت 5 (جدید ها)  زیر با قیمت ارزان و مناسب در خدمت دوستان قرار حواهد گرفت.

تماس، تلگرام، واتس آپ، پیامک و ایمیل:

09337212591

powergams@gmail.com

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کد شماره n4:

مقاله مهندسی برق قدرت قدرت (دینامیک، انرژی های تجدید پذیر، کنترل، خودروهای برقی) سال 2015 ژورنال IEEE:

موضوع:


Multistage time-variant electric vehicle load modelling for capturing accurate

 electric vehicle behaviour and electric vehicle impact on electricity distribution grids


:Abstract

 Accurate electric vehicle (EV) load modelling is a daunting task because the proportion and characteristics of

these extra electrical loads in the grids are continuously changing. In many recent EV studies, EV load is assumed to

be a constant power load to analyse the effect of EV charging on electric network. However, such an assumption

would not be effective in real-time application and can give misleading results. This study proposes a multistage time variant EV load modelling technique based on the characteristics of EV load demand due to EV battery charging. To capture the transitions between different stages of battery charging, the EV loads are modelled with a multistage

scheme and implemented ZIP model. A comparative study of energy losses and voltage profile is carried out on the

IEEE 69-bus test system for the use of a traditional constant load model, conventional ZIP load model and the

proposed multistage time-variant EV load model. Results show that the load models can significantly affect the energy losses and terminal voltages, and provide misrepresentation if EV load is not accurately modelled. Therefore, for proper analysis of EV loads during unidirectional charging, it is essential to have accurate models for predicting true EV behaviour


آدرس مقاله: 

http://ieeexplore.ieee.org/document/7337593

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کد شماره n5:

مقاله مهندسی برق قدرت قدرت (سیستم توزیع، بریکر، SVC، دینامیک، پایداری گذرا) سال 2014 ژورنال IEEE:

موضوع:


Combined operation of SVC and optimal reclosing of circuit breakers for power system transient stability enhancement 

Mohammad Ashraf Hossain Sadi∗, Mohd. Hasan Ali


:Abstract

This paper proposes the coordinated operation of optimal reclosing of circuit breakers and Static VarCompensator (SVC) for enhancing the transient stability of a multi-machine power system. The transientstability performance of the combined operation of optimal reclosing of circuit breakers and SVC is com-pared with that of the combined operation of conventional reclosing of circuit breakers and SVC. The totalkinetic energy (TKE) of the generators in the system is used to determine the transient stability enhance-ment index. Simulations are performed through Matlab/Simulink software. Simulation results for boththe three-line-to-ground (3LG) and single-line-to-ground (1LG) permanent faults at different points ofthe power system indicate that the proposed combination of optimal reclosing of circuit breakers andSVC can enhance the transient stability of the system well. Also, the performance of the proposed methodis better than that of the combined operation of conventional reclosing of circuit breakers and SVC

Keywords:

(Optimal reclosing of circuit breakers (ORCT

Permanent fault

(Static Var Compensator (SVC

(Total kinetic energy (TKE

Transient stability

آدرس مقاله: 

http://www.sciencedirect.com/science/article/pii/S0378779613002423

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کد شماره n6:

مقاله مهندسی برق قدرت قدرت (سیستم توزیع، دینامیک، پایداری ، میرایی نوسانات، ژنراتور سنکرون مجازی، تولید پراکنده) سال 2014 ژورنال IEEE:

موضوع:

Oscillation Damping of a Distributed Generator Using a Virtual Synchronous Generator


Abstract

These days, distributed generators (DGs), such as photovoltaic, wind turbine, and gas cogeneration systems have attracted more attention than in the past. DGs are often connected to a grid by power inverters. The inverters used in DGs are generally controlled by a phase-locked loop (PLL) in order to be synchronized with the grid. In a stability point of view, the power system will be significantly affected if the capacity of inverter-based DGs becomes larger and larger. The concept of the virtual synchronous generator (VSG), which is used to control inverters to behave like a real synchronous generator, can be considered as a solution. The VSG can produce virtual inertia from energy storage during a short operation time, and the active power can be produced by a VSG similar to a synchronous generator. In this paper, an oscillation damping approach is developed for a DG using the VSG. The method is confirmed analytically, and verified through computer simulations. Finally, some laboratory experiments are conducted using 10-kW inverters and a transmission-line simulator

Index Terms—Active power control, oscillation reduction, reactive power control, swing equation, virtual synchronous generator

آدرس مقاله: 

http://ieeexplore.ieee.org/document/6766293

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کد شماره n7:

مقاله مهندسی برق قدرت قدرت (عایق ها و فشار قوی، مقره ها، خط انتقال هوایی، محیط صحرایی) سال 2012 ژورنال IEEE:

موضوع:

Simulation of overhead transmission line insulators

under desert environments

چکیده:

Abstract:

Till today, flashover because of pollution of insulators of overhead transmission lines (OHTL) is a major source of

trouble in the electrical power transmission system. The importance of this problem can be assessed from fault statistics of high-voltage transmission lines. In Egypt, for example, about 82% of the total faults of transmission and distribution OHTL are because of pollution. This study deals with laboratory tests, which have been carried out on polluted insulators of the OHTL that simulate desert environments. In this study, the effect of the variation of conductivity of the polluted layer by means of equivalent salt deposit density on flashover voltage (FOV) is investigated. The effect of variation of conductivity of the polluted, layer along the time required by the procedure needed to form dew, on FOV is also studied. This study is useful for indicating the worst period after the formation of dew, where the probability of flashover is increased.

Osama E. Gouda1, Adel Z. El Dein2

1Electrical Power Department, Faculty of Engineering, Cairo University, Cairo, Egypt

2High Voltage Networks Department, Faculty of Energy Engineering, Aswan University, Aswan, Egypt

E-mail: azeinm2001@hotmail.com

چکیده :

 تا امروز جرقه به دلیل آلودگی مقره خطوط انتقال هوایی، عامل اصلی مشکلات در سیستم انتقال انرژی است . اهمیت این مساله را می توان از آمار ناشی از ارزیابی خطاهای خطوط انتقال به دست آورد. در مصر به عنوان مثال 82 درصد از کل خطاهای انتقال و توزیع به دلیل آلودگی هستند. این مقاله با تست های آزمایشگاهی ، بر روی مقره های آلوده در محیط های بیابانی شبیه سازی شده می پردازد. در این تحقیق تاثیر تغییرات هدایت لایه آلوده توسط شبیه سازی لایه نمک بر روی مقره ها در ولتاژ جرقه پرداخته است . در این پروژه اثر تغییرات رسانای لایه آلوده در طول زمان مورد لازم برای تشکیل شبنم در جرقه نیز مورد بررسی قرار می گیرد. همچنین این پژوهش بدترین دوره پس از تشکیل شبنم را که در آن احتمال وقوع  جرقه افزایش میابد را نشان می دهد.

 

آدرس مقاله:

http://ieeexplore.ieee.org/document/6484226

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کد شماره n8:

مقاله مهندسی برق کنترل (بهره برداری سیستم های قدرت، بازار برق، خودروهای الکتریکی، مشارکت واحدها بر اساس هزینه، شارژ و دشارژ) سال 2014 ژورنال elsevier:

موضوع:

 

Evaluation of plug-in electric vehicles impact on cost-based unit commitment

 

Incorporating plug in electric vehicles (PEVs) to power systems may address both additional demand as well as mobile storage to support electric grid spatially. Better utilization of such potential depends on the optimal scheduling of charging and discharging PEVs. Charging management malfunction of PEVs may increase the peak load which leads to additional generation. Therefore, charging and discharging of PEVs must be scheduled intelligently to prevent overloading of the network at peak hours, take advantages

of off peak charging benefits and delaying any load shedding. A charging and discharging schedule of PEVs with respect to load curve variations is proposed in this paper. The proposed methodology incorporates integrated PEVs; the so-called parking lots; into the unit commitment problem. An IEEE 10-unit test system is employed to investigate the impacts of PEVs on generation scheduling. The results obtained from simulation analysis show a significant techno-economic saving.

آدرس مقاله:

http://www.sciencedirect.com/science/article/pii/S0378775313015000

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کد شماره n9:

مقاله مهندسی برق کنترل (کنترل پیشگیرانه، مدل سازی چند هدفه، سلول های سوختی PEM) سال 2009 ژورنال elsevier:

موضوع:

 

 

 An efficient multi-objective model predictive control framework of a PEM fuel cell

 

 

 Abstract: Fuel cell systems can produce clean energy and have attracted the interest of both industrial and basic research in the recent years. They are part of a promising benign and environmentally friendly technology and they can be used both in mobile and stationary applications. A dynamic model was constructed and validated using experimental data based on a specific application, consisting of a high temperature PEM Fuel Cell (FC) working at a constant pressure and a Power Conversion Device that controls the current drawn from the FC. An integrated framework that consists of an online maximum power point prediction algorithm and a non-linear model based control scheme is presented. The proposed framework aims to maintain the fuel cell close to the optimum power point and the corresponding oxygen excess ratio level. Simulation studies show that the proposed control framework results in improved performance regarding the efficient and safe fuel cell operation under varying operating conditions.

Keywords: fuel cell control, model predictive control, power management.

آدرس مقاله:

http://www.sciencedirect.com/science/article/pii/S1474667015303852

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کد شماره n10:

مقاله مهندسی برق قدرت قدرت (سیستم توزیع، دینامیک، سیستم ذخیره ساز کوتاه مدت، بهبود کیفیت ولتاژ، کنترل توان راکتیو، کیفیت توان، تولید پراکنده) سال 2014 ژورنال IEEE:

موضوع:

 

A Short-Term Energy Storage System for Voltage Quality Improvement in Distributed Wind Power

 

Abstract

Wind power (WP) penetration in weak distribution networks is associated with adverse impacts on voltage quality. The installation of an energy storage system (ESS) is a possible voltage quality remedy in such milieus. This paper proposes a supercapacitor ESS for alleviation of voltage flicker resulting from WP integration. The proposed ESS control and management are tailored

to that purpose such that the ESS offsets the flicker-producing fluctuations in the generated WP. The proposed power sizing of the ESS is defined by the estimated turbulence intensity and wind speed average at the installation site. A 2 MW wind generator of the doubly fed induction generator type is employed as a source

of WP and simulations are conducted on a simplified test system, as well as a detailed 25 kV distribution network on which results are compared with acknowledged reactive power flicker mitigation approaches and verified by prototyping in a real-time simulation platform. The flicker measurement procedure is conducted per IEC Standard 61000-4-15.

Index Terms—Distributed generation, energy storage, flicker, power quality, real-time simulation, storage control, supercapacitor, wind power (WP).

آدرس مقاله:

http://ieeexplore.ieee.org/document/6920073

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