This paper presents a novel tool based on Microsoft Excel for analyzing radial distribution systems. New algorithms are developed to draw the network diagrams graphically within the spreadsheet, once the input data is available. A 9-bus... more
Improved and controlled power quality is one of the essential and fundamental need in any power driven industry for optimum utilization of resources. However critical problems in power quality have been recognized such as sags, swells,... more
The “smart grid” refers to various efforts to modernize the power grid through the application of alternate sources of energy and intelligent devices. The present national interest in smart grid applications has generated many questions... more
Bangladesh is an energy hunger country. After the liberation war to meet up power crisis was one of the most important challenges for government. Day by day the challenge becomes really harder to harder to meet up power crisis, especially... more
IEC 61850 was proposed as a standard protocol for communications within the substation. In its current edition, the standard does not cover communications outside the substation, either with the control center or with other substations,... more
This article gives the complete information about the Reactive Power compensation given to the distribution system for reducing the Power Losses. In this article, a case study of MPPKVVCL, Jabalpur, India substation of 8MVA at 33/.4 kV... more
The concept of microgrid was first introduced in 2001 as a solution for reliable integration of distributed generation and for harnessing their multiple advantages. Specific control and energy management systems must be designed for the... more
The urgent need to reduce greenhouse gas emissions along with growing energy security concerns has driven the search for alternatives to the internal combustion engine vehicle. One of the most promising solutions being considered is... more
Preventive maintenance (PM) for substation with aging equipment was considered in this work. The main objective was to develop PM model to study the impact of PM on cost minimization in a distribution substation. Weibull distribution... more
In this paper, the performance analysis of wind turbine as a distributed generation unit is presented. In this study a model of wind power is driven by an induction machine. Wind power that is distributed generation is capable of... more
A major goal for managers of electric power networks is maximum asset performance. Minimal life cycle cost and maintenance optimization becomes crucial in reaching this goal, while meeting demands from customers and regulators. This... more
Power lines were originally devised to transmit electric power from a small number of sources (the generators) to a large number of sinks (the consumers) in the frequency range of 50-60 Hz. Initially, the first data transmissions over... more
Reconfiguration, by exchanging the functional links between the elements of the system, represents one of the most important easures which can improve the operational performance of a distribution system. The authors propose an original... more
In this paper, a new algorithm is presented to solve the power flow problem in radial distribution systems. The proposed method takes into account the voltage dependency of static loads, and line charging capacitance. The method is based... more
In this paper, a power line conditioner using a cascade multilevel inverter is presented for voltage regulation, reactive power (var) compensation, and harmonic filtering. The cascade M -level inverter consists of (M 0 1)=2 H bridges, in... more
This paper is intended to present a plan for installing a network of electric vehicle charging stations in the city of Rio de Janeiro. It is important to underline the fact that this text results from a research and development project... more
This paper presents the performance analysis of a hybrid filter composed of passive and active filters connected in series. The analysis is done by evaluating the influence of passive filter parameters variations and the effects that... more
operations that need to be studied to identify mitigation measures and ensure seamless integration. The purpose of this paper is to discuss impacts of PV-DG on power distribution systems planning and operations, including those of steady... more
In this paper, an attempt has been made to develop a new algorithm for distribution system planning. The proposed algorithm does not require prior knowledge of candidate substation location and can automatically select location of a... more
In this paper, a FACTS based dynamic switched C-type filter (DSCTF) compensator scheme for distribution systems is presented with different load characteristics and control strategies. In order to suppress power quality problems and... more
This paper summarizes the results from a number of different voltage sag investigations. These investigations involve characterizing the voltage sag performance at a customer facility and evaluating equipment sensitivity to different... more
A major goal for managers of electric power networks is maximum asset performance. Minimal life cycle cost and maintenance optimization becomes crucial in reaching this goal, while meeting demands from customers and regulators. This... more
Finding an optimal subset of features that maximizes classification accuracy is still an open problem. In this paper, we exploit the speed of the Harmony Search algorithm and the Optimum-Path Forest classifier in order to propose a new... more
In this paper a short-circuit computation (SCC) procedure for large-scale distribution systems with high penetration of distributed generators based on contemporary technologies is proposed. The procedure is suitable for real-time... more
The power quality is a major issue in the distribution system. There will b e problem occurs regarding reactive power transfer in distribution system due to large power angle even with substantial voltage magnitude gradient. Here a... more
This work analyzes resistance grounded systems, particularly three standards used in Italian industries: low resistance grounded, medium resistance grounded and high resistance grounded systems are discussed and compared. This comparison... more
"In its third round of tariff review, the Brazilian Electricity Regulatory Agency (Aneel) adopted a methodology based on data envelopment analysis (DEA) to define efficient levels of operational expenditure. This work presents... more
Single line-to-ground faults on distribution systems: Effect of pre-fault voltages on fault currents
This paper presents a numerical study of the prefault operation condition effect on the short-circuit currents estimation in distribution systems using symmetrical components. A case study is presented comparing results between ATP/EMTP... more
Today 95% of all gastrointestinal carcinomas are believed to arise from adenomas. The early detection of adenomas could prevent their evolution to cancer. A novel system for the support of the detection of adenomas in gastrointestinal... more
the paper deals with an optimized Unified Power Quality Conditioner (UPQC), which aims at the integration of series and shunt active power filters with minimum rating of the UPQC. In this paper analysis results of a combination the UPQC... more
Modern power distribution systems often contain multiple power sources integrated within one system. A simple variant may be the common double-ended substation, which can be further complicated by an additional emergency or alternate... more
The paper discusses the topology and control of a unified power quality conditioner (UPQC) that can be used simultaneously in voltage or current control mode in a power distribution system. In the voltage control mode, the UPQC can force... more
Average case complexity, in order to be a useful and reliable measure, has to be robust. The probability distribution, generally uniform, over which expectation is taken should be realistic over the problem domain. But algorithm books do... more
This paper proposes a method for comparing the effect of different maintenance strategies on system reliability and cost. This method relates reliability theory with the experience gained from statistics and practical knowledge of... more
In this paper, a new active interphase reactor for twelve-pulse diode rectifiers is proposed. The proposed system draws near sinusoidal currents from the utility. In this scheme, a low kVA ( 0.03 per unit ) active current source injects a... more
Abstrect--In Pakistan, a large number of consumer appliances are being severely affected by reduced supply voltage. It is being observed that consumers are being supplied with a voltage of 200V and in some worst cases 150V. Here in this... more
The paper presents a multi-objective planning approach for electrical distribution systems incorporating shunt capacitor banks. In this planning, the number of feeders, feeder routes, and number, locations, and rating of shunt capacitor... more
In this paper, an extended impedance-based fault-location formulation for generalized distribution systems is presented. The majority of distribution feeders are characterized by having several laterals, nonsymmetrical lines, highly... more
Energy losses are degrading distribution utility performance as well as adding to already occurring energy crises. Increasing fuel prices, scarcity and competition calls for highest operational efficiency of power sector. Both technical... more
For smart metering systems (SMSs), this study presents a novel architecture, which allows simple, secure and fast integration of SMSs with other software products. Proposed architecture that combines better features of two models [Common... more
One of the problems faced by the Electricity Power consumers is the issue of charging higher than their consumption. The extended framework presented in this work provides a lasting solution by developing a Multi-agent Based System, which... more
Time based coordination and protection is the normal basis for coordinating low voltage power distribution systems. Enhancements, such as zone selective interlocking and bus differential protection, may be used to accelerate protective... more
Fault resistance is a critical component of electric power systems operation due to its stochastic nature. If not considered, this parameter may interfere in fault analysis studies. This paper presents an iterative fault analysis... more
For the first time mathematical model of a synchronous motor with centrifugal pump was created based on electrical and hydraulic analogies. Efficient method of analysis of a synchronous motor with centrifugal pump as an element of a Power... more
Power distribution automation and control are important tools in the current restructured electricity markets. Unfortunately, due to its stochastic nature, distribution systems faults are hardly avoidable. This paper proposes a novel... more