An attempt is made in This work to present critical literature review and an up-to-date exhaustive bibliography on the AGC of power systems. Various control aspects concerning problem have been highlighted. schemes based parameters, such as linear nonlinear system models, classical optimal control, centralized, decentralized, multilevel are discussed. strategies digital, self-tuning adaptive, VSS systems, intelligent/soft computing included. Finally, investigations systems incorporating...

Modern power system analysis , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

Electric power systems have experienced continuous growth in all the three major sectors of system namely, generation, transmission and distribution. Electricity cannot be stored economically, but there has to balance between demand supply. The increase load sizes operational complexity such as generation allocation, non-utility planning, pricing brought about by widespread interconnection inter-utility transaction contracts, introduced difficulties into operation system. Allocation...

In this paper, different Distribution Static Compensators (DSTATCOMs) topologies, state of the art, their performance, design considerations, future developments, and potential applications are investigated for power quality improvement. These DSTATCOMs three-phase three-wire systems four-wire developed installed in distribution system many functions, such as reactive compensation, harmonics elimination, load balancing, neutral current compensation. This paper is aimed to explore a broad...

The paper presents a novel method using load flow for solving radial distribution networks. feature of the network has been fully exploited to develop an algorithm by unique lateral, node and branch numbering scheme. proposed involves only evaluation simple algebraic voltage expressions without any trigonometric functions. Thus, computationally, is very efficient requires less computer memory storage as all data stored in vector form. can easily handle different types characteristics....

Induction generators are increasingly being used in nonconventional energy systems such as wind, mini/micro-hydro, biogas, etc. The advantages of using an induction generator instead synchronous well known. Some them reduced unit cost and size, ruggedness, absence separate DC source, ease maintenance, self-protection against severe overloads short circuits, An attempt is made this paper to present exhaustive bibliography on the application systems.

The application of a stand-alone directly coupled photovoltaic (PV) electromechanical system for water pumping has increased in remote areas developing countries. In this work, the performance PV-powered dc permanent-magnet (PM) motor with centrifugal pump been analyzed at different solar intensities and corresponding cell temperature. results obtained by experiments are compared calculated values, it is observed that good match between PV array characteristics. Through manual tracking...

The economic-emission load dispatch problem which accounts for minimization of both cost and emission is a multiple, conflicting-objective function problem. Goal programming techniques are most suitable such type problems. Here, the solved through linear nonlinear goal algorithms. application validity proposed algorithms demonstrated sample system having six generators.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

The following paper validates an algorithm for Maximum Power Point Tracking using Perturb and Observe technique. starts by setting the computed maximum power PMAX to initial value (usually zero). Next actual PV voltage current are measured at specific intervals instantaneous of power, PACT is computed. compared. If greater than PMAX, it set as new PMAX. At every instant calculated, comparison continuously executed. Hence final will be point which can delivered load. For transfer across load,...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, a new three-phase four-wire distribution static compensator (DSTATCOM) based on T-connected transformer and three-leg voltage source converter (VSC) is proposed for power quality improvement. The connection mitigates the neutral current VSC compensates harmonic current, reactive power, balances load. Two single-phase transformers are connected in T-configuration interfacing to...

In this paper, different voltage injection schemes for dynamic restorers (DVRs) are analyzed with particular focus on a new method used to minimize the rating of source converter (VSC) in DVR. A control technique is proposed capacitor-supported The DVR demonstrated reduced-rating VSC. reference load estimated using unit vectors. synchronous frame theory conversion voltages from rotating vectors stationary frame. compensation sag, swell, and harmonics

This paper examines the capability of a least square support vector machine (LSSVM) model for slope stability analysis. LSSVM is firmly based on theory statistical learning, using regression and classification techniques. The Factor Safety (FS) has been modelled as problem, whereas status (s) problem. Input parameters LSSSVM are: unit weight (γ), cohesion (c), angle internal friction (ϕ), (β), height (H) pore water pressure coefficient (ru). developed also gives probabilistic output....