M.-R Haghifam
Professor, Electrical & Computer Dep., Tarbiat Modarres University, Tehran, IRAN
[ 1 ] - Flexible Scheduling of Active Distribution Networks for Market Participation with Considering DGs Availability
The availability of sufficient and economic online capacity to support the network while encountering disturbances and failures leading to supply and demand imbalance has a crucial role in today distribution networks with high share of Distributed Energy Resources (DERs), especially Renewable Energy Resources (RESs). This paper proposes a two-stage decision making framework for the Distribution...
[ 2 ] - Scheduling of Residential Multiclass Appliances in Smart Homes UsingV2H Capability of Electric Vehicle
With the aim of reducing cost of electricity consumption and peak load reduction, tools requirement for better managing electricity consumption have become inevitable in recent years. Smart home has some equipment which are controllable and this ability is used for increasing comfort and minimizing electricity cost for residence. As a key component of smart home , Electric Vehicle(EV) ,increase...
[ 3 ] - Multi-objective Dynamic Planning of Substations and Primary Feeders Considering Uncertainties and Reliability
This research uses a comprehensive method to solve a combinatorial problem of distribution network expansion planning (DNEP) problem. The proposed multi-objective scheme aims to improve power system's accountability and system performance parameters, simultaneously, in the lowest possible costs. The dynamic programming approach is implemented in order to find the optimal sizing, siting and timi...
[ 4 ] - Effect of Distributed Energy Resources in Energy Hubs on Load and Loss Factors of Energy Distribution Networks
In this paper, an attempt has been made to introduce a new control strategy including Plug-in Hybrid Electric Vehicle (PHEV) and Diesel engine generator to control the voltage and frequency of autonomous microgrids. The proposed control strategy has multiple advantages over the recent control methods in microgrids. The proposed method applies the primary and secondary frequency control strategy...
[ 5 ] - Significant Characteristics of Multi Carrier Energy Networks for Integration of Plug-In Electric Vehicles to Electric Distribution Network
One of the big concerns of big cities is facing with the increase of fossil fuel vehicles in the roads. The cars intensify greenhouse gas emission in civic centers. One approach to reduce the emission is replacing the cars by Plug-In Electric Vehicles (PEVs). In spite of reducing the emission, PEVs have some adverse effect on electric distribution networks. Technical challenges such as load and...
[ 6 ] - Effect of Wind Turbine, Solar Cells and Storages in Short Term Operation of Coupled Electricity and Gas Infrastructures in Different Climates
The biggest challenges faced in big cities are greenhouse gas emission and growing energy needs. Efficient utilization of existing infrastructures has a prominent role in response to the challenges. Energy hub approach embraces performance of different energy networks. Energy hub is defined as a super node in electrical system receiving distinctive energy carriers such as gas and electricity in...
[ 7 ] - Optimal Placement of Substations Based on Economic and Technical Risk Management
Design and expansion of distribution systems seems inevitable in view of the need to satisfy the rise in energy consumption in a technical and economical way. Optimal location, sizing and determining the service area of substations is one of the principle problems in expansion of distribution systems. Also uncertainty is one of the important factors that increase risk of exact decision makings....
[ 8 ] - A New Real-Time Pricing Scheme Considering Smart Building Energy Management System
Real-time pricing schemes make the customers to feel the energy price volatility and improve their load profiles. However, these schemes have no significant effect on demand-side uncertainty reduction. In this paper, considering smart grid infrastructures and smart building Energy Management System (EMS), a new real-time pricing scheme is presented to reduce the uncertainty of demand-side. In t...
[ 9 ] - Congestion Management in Electricity Markets Using Demand Response Programs and Series FACTS Devices
In today’s restructured environment, congestion management plays an essential role in power system operation. Different methods are presented and discussed in this respect for congestion management in short-term and long-term intervals. It is attempted in the present paper to investigate the impact mechanism of FACTS devices and demand response programs together with generation re-dispatch as s...
[ 10 ] - Loss of Load Expectation Assessment in Deregulated Power Systems Using Monte Carlo Simulation and Intelligent Systems
Deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. In this paper, generation reliability is considered, and a method for its assessment using intelligent systems is proposed. Also, because of power market and generators’ forced outages stochastic behavior, Monte Carlo Simulation is used for reliability evaluation. Generation r...
[ 11 ] - Regulation of Electrical Distribution Companies via Efficiency Assessments and Reward-Penalty Scheme
Improving performance of electrical distribution companies, as the natural monopoly entities in electric industry, has always been one of the main concerns of the regulators. In this paper, a new incentive regulatory scheme is proposed to improve the performances of electrical distribution companies. The proposed scheme utilizes several efficiency assessments and a 3-dimentional reward-penalty ...
[ 12 ] - ارائه روشی خطی مبتنی بر مسیر به منظور بازیابی بار در شبکههای توزیع از طریق شکلگیری ریزشبکهها
پدیدههای طبیعی و شرایط آب و هوایی سخت میتوانند منجر به وقوع خاموشیهای گسترده در شبکههای قدرت شوند. به منظور کاهش هزینههای اقتصادی و اجتماعی ناشی از وقوع خاموشیها، اکثر شرکتهای برق از دستورالعملها و رویههای عملیاتی از پیش تعیین شدهای جهت بازیابیِ سیستم استفاده مینمایند. با این حال، به دلیل اثرات شدید و ماهیت متفاوت چنین پدیدههایی روشهای سنتی بازیابی بار در شبکه توزیع نمیتوانند تامین...
[ 13 ] - محکزنی چندسطحی کارایی شرکتهای توزیع الکتریکی
در این مقاله، یک روش محکزنی چند سطحی جهت ارزیابی کارایی شرکتهای توزیع الکتریکی ارائه میشود. دروش ارائه شده، همکاری مشترک هزینههای بهرهبرداری و سرمایهگذاری برای بهبود کیفیت خدمات و کاهش تلفات انرژی در نظر میگیرد. در ابتدا، روش خوشهبندی وزندار فازی c-means توسط روش ارائه شده به کار گرفته میشود تا شرکتهای مشابه شناسایی شوند. سپس، روش ارائه شده، تحلیل پوششی دادهها و تحلیل مازاد را در چن...
[ 14 ] - تاثیر فرآیندهای ورود تجهیز در قابلیت اطمینان شبکههای توزیع برق
اطلاعات تجهیزات شبکه، اهمیت زیادی در تصمیمگیری مدیریت دارایی دارد. این دادهها بایستی بعنوان ورودی به فرآیندهای تصمیمگیری مدیریت دارایی به تصمیمگیران شرکت برق ارائه شوند. با استخراج و تهیه اطلاعات مورد نیاز، تحلیل و ارزیابی امکانپذیر خواهد بود. از طرف دیگر، برای مدیریت کارا و اقتصادی از نظر قابلیت اطمینان، تحلیل نرخ خرابی برای تعیین ماهیت خطا در تجهیز از وظایف مهم مدیر دارایی است. نرخ خرابی...
[ 15 ] - پیش بینی و تحلیل نرخ خطای ناشی از رشد درختان در خطوط هوایی توزیع الکتریکی با استفاده از شبکه عصبی و تحلیل عاملی
در مطالعه قابلیت اطمینان سیستم های قدرت، نرخ خطا پارامتری مهم است. نرخ خطا در مطالعات شبکه های توزیع معمولاً به طور تقریبی ثابت در نظر گرفته می شود ولی به طور دقیق تر و در عمل، پارامتری متغیر است که به عوامل داخلی و خارجی زیادی بستگی دارد. برای پیش بینی نرخ خطای متغیر، از وقایع قبلی و داده های آماری آنها استفاده می شود. در این مقاله، نرخ خطای متغیر در شبکه های توزیع فشار متوسط هوایی در اثر برخور...
[ 16 ] - شاخصهای جدید پایش تأثیر چرخۀ تأمین تجهیزات بر تلفات سیستم توزیع برق
Restructuring in electrical power distribution utilities, energy loss management is one of the critical activities to enhance network efficiency. Accordingly, monitoring of technical loss and strategic planning for loss reduction would be a main target of asset manager. For loss monitoring, the usual methods of loss calculation and estimation need numerous data which is not used mostly to utili...
[ 17 ] - تحلیل سودبخشی تشکیل ائتلاف نیروگاه مجازی و تجمیعکننده بار در شبکه توزیع فعال
Distributed Energy Resources (DERs) play a key role in the Active Distribution Networks (ADNs) with environmental concerns. Their small scales and the uncertainty pertaining to intermittent generation of renewable resources are the major challenges of participating in the wholesale electricity markets. Based on the concept of Virtual Power Plant (VPP), the aggregation of heterogeneous DERs is p...
[ 18 ] - Multi-objective Grasshopper Optimization Algorithm based Reconfiguration of Distribution Networks
Network reconfiguration is a nonlinear optimization procedure which calculates a radial structure to optimize the power losses and improve the network reliability index while meeting practical constraints. In this paper, a multi-objective framework is proposed for optimal network reconfiguration with the objective functions of minimization of power losses and improvement of reliability index. T...
[ 19 ] - Smart load shedding in distribution networks considering the importance of loads
One of the most important tasks of operators in distribution companies is to restoration after a fault in the network. In load restoration schemes, in addition to observing the load flow constraints, it is necessary to maintain the grid structure radially and, most importantly, observing the balance of consumption with the possibility of providing load due to the limitations of the backup feede...
[ 20 ] - Smart load shedding and distributed generation resources rescheduling to improve distribution system restoration performance
After a permanent fault occurs if it is not possible to supply the load in the network, the optimal load restoration scheme allows the system to restoration the load with the lowest exit cost, the lowest load interruption, and in the shortest possible time. This article introduces a new design called Smart Load Shedding, abbreviated SLS. In the proposed SLS scheme, the types of devices in smart...
[ 21 ] - Differentially Private Local Electricity Markets
Privacy-preserving electricity markets have a key role in steering customers towards participation in local electricity markets by guarantying to protect their sensitive information. Moreover, these markets make it possible to statically release and share the market outputs for social good. This paper aims to design a market for local energy communities by implementing Differential Privacy (DP)...
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