In many cases, it may be more economical to control the voltage distortion experienced by all customers by changing. Subsynchronous resonance is a condition that can exist on a power system wherein the network has natural frequencies that fall below the nominal 60 hertz of the network applied voltages. Also of direct interest is the significant work performed on eigenvalue numerical methods, which resulted in the computer programs known as eispack, summarized in 10 and 54. Ieee committee report, readers guide to subsynchronous resonance, ieee trans. Interarea resonance from forced oscillations in power.
Analysis of subsynchronous resonance in power systems book. Nayfeh electrical engineering abstract a bifurcation analysis is used to investigate the complex dynamics of two heavily loaded singlemachinein nitebusbar power systems modeling the characteristics of the board. Pdf damping of subsynchronous resonance using a voltage. Analysis of subsynchronous resonance in power systems. Padiyar the book is divided into five parts with a total of 14 chapters. R download it once and read it on your kindle device, pc, phones or tablets. Subsynchronous resonance in doublyfed induction generator. Use features like bookmarks, note taking and highlighting while reading analysis of subsynchronous resonance in power systems power electronics and power systems. Subsynchronous resonance article about subsynchronous. Download analysis of subsynchronous resonance in power. Sub synchronous resonance damping in interconnected power systems. Analysis of subsynchronous resonance in power systems power electronics and power systems kindle edition by padiyar, k. Reduction of harmonic distortions and subsynchronous.
Dobson et al 3 have shown that strong resonance is a precursor to oscillatory instability in their study on 3bus and 9bus power systems. Design of subsynchronous resonance protection and reduction. Damage to own units and all generators that participate in the mode. Subsynchronous resonance in power systems pdf free download. The second part develops the system model in detail. Facts controllers are capable of controlling the network condition in a very fast manner and this feature can be utilized to improve the stability of a power system 4.
Mirshekar, optimal control of svc for subsynchronous resonance stability in typical power system, in proceedings of the ieee international symposium on industrial electronics isie 01. Subsynchronous resonance subsynchronous oscillation is an electric power system condition where the electric network exchanges significant energy. To evaluate the subsynchronous resonance of the tg unit with increased wind energy penetration, the ieee first benchmark model fbm is modified as fig. Resonance phenomenon in power systems, including power oscillations, may cause. Overview of subsynchronous resonance analysis and control. Energy analysis of power system low frequency oscillation. The energy characteristics of low frequency oscillation of resonance mechanism in two machine system were analyzed through the simulations in matlab.
Part three presents the small signal stability analysis applied to the problem of low frequency oscillations. Circled x is the power source battery bank with 3phase inverter note distribution system is a 3phase line system, cable parameters are known 50mm or 70mm abs, ignore street light conductor. Subsynchronous resonance in doublyfed induction generator based wind farms selam chernet c selam chernet, 2016. With the use of above software, the first benchmark model is developed and simulated. In a worstcase scenario, the inductive reactance x l of the transformer and the capacitive reactance x c of the pf correction cap form a parallel resonant circuit. It consists in a single generator 600 mva22kv60 hz3600 rpm connected to an infinite bus via two transmission lines, one of which is 55% seriescompensated. In this case, the main change is in the second resonance peak, shifting from around 450 hz to around 350 hz, with a possible amplification of the 7th harmonic as a result. Svc for resonance control in nampower electrical power. System configuration the system considered in the present work is the ieee second benchmark model 5 with additional. Not nearly as often, ferroresonance has also been documented in yy transformers and in aerial threepot banks served by longdedicated aerial c. Analysis of strong resonance in power systems with statcom. Free download analysis of subsynchronous resonance in power systems power electronics and power systems pdf.
Impedance based resonance analysis in a vschvdc system ling xu, student member, ieee, and lingling fan, senior member, ieee abstractresonances can limit power transfer in a voltage source converterhigh voltage dc vschvdc system. Subsynchronous resonance accessscience from mcgrawhill. Based on the authors twenty years of experience, this book shows the practicality of modern, conceptually new, wide area voltage control in transmission and. Gen 1 is the original generator from the ieee fbm, the power factor and. Overview of subsynchronous resonance analysis and control in. Steam turbine and governor system subsynchronous resonance. Application of bifurcation theory to subsynchronous resonance. Whenever the load on an alternator is increased, the rotor speed slightly decreases, this speed is called as subsynchronous speed. Voltage control and protection in electrical power systems from. Analysis of subsynchronous resonance effect in series compensated line with booster transformer international journal of electrical and electronics engineering ijeee, issn print. Thus, new approaches for generating lowcarbon, renewable energy sources such as natural gas, biogas, wind power, solar photovoltaic, fuel cells, micro turbines, etc.
Simulation of power system with renewables 1st edition elsevier. Analysis of strong resonance in power systems with. Recent development of power electronics introduces the use of flexible ac transmission system facts controllers in power systems. Power factor correction practices and underground cable capacitance can resulting resonance conditions that magnify these harmonic currents and cause high voltage distortion. Part of theelectrical and electronics commons, and theoil, gas, and energy commons. Delivering full text access to the worlds highest quality technical literature in engineering and technology. Analysis of subsynchronous resonance based on eigenvalue. Gen 1 is the original generator from the ieee fbm, the power factor and the output power 803.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. In this paper,an important application of the second benchmark system 4and matlab 7is presented to study subsynchronous resonance that may occur in series compensated transmission systems in particular,the simulation of the torque amplification and eigenvalue analysis of the electrical network. The signal washout block serves as a highpass filter, with the time constant t w, and it allows oscillatory signals in the input to. Circled x is the power source battery bank with 3phase inverter note distribution system is a 3phase line system, cable parameters are known. Subsynchronous resonance file exchange matlab central. Are there papers on subsynchronous resonance in power.
Therefore, proper understanding and analysis of ssr is to be carried out while planning series capacitor compensation in power systems. Interarea resonance from forced oscillations in power systems. The first part begins by introducing the basic concepts of stability. X l x c at a resonant frequency which is the same as or close to a harmonic frequency. Analysis of subsynchronous resonance in power systems power. The subsynchronous resonance damping under different levels of series compensation in the network, and the effect of fault clearing time on the torque amplification are investigated. Impedance based resonance analysis in a vschvdc system. Purchase power factor caps with detuned antiresonance filter. Pdf damping subsynchronous resonance in power systems. Subsynchronous resonance in power systems provides indepth guidance toward the parameters, modeling, and analysis of this complex subclass of power systems. Emphasizing field testing to determine the data required, this book facilitates thorough and efficient oscillation and damping modeling using eigenvalues of a system s linear model. Use features like bookmarks, note taking and highlighting while reading analysis of subsynchronous resonance in power systems power electronics and power.
Oct 31, 1998 analysis of subsynchronous resonance in power systems book. This should include, the wiley titles, and the specific portion of the content you wish to reuse e. Supplementary damping controller design for sssc to mitigate. Subsynchronous resonance in power systems wileyieee. In addition to the advantages of series capacitor, there is another problem, which is, by installing a. The harmonic current generated by the load excites the circuit. Reactive power, static var compensators, sustained transient. The capacitive series compensation of long transmission lines is one of the most effective and available methods to increase the transmission capacity and improve the stability of the system. Subsynchronous resonance in power systems westinghouse4749, and the work performed by engineers at ontario hydro 5053. Resonance, ieee transactions on power apparatus and systems, vol. The paper presents the background to the resonance problem, the auas svc configuration, the resonance controller and finally the conclusions from extensive test results, both from simulator and site tests. Subsynchronous resonance ssr problems in series compensated steamturbine power systems coexist with the beneficial effects provided by the series capacitors. Download it once and read it on your kindle device, pc, phones or tablets. Sub synchronous resonance damping in interconnected power.
Analysis of subsynchronous resonance in power systems k. Application of bifurcation theory to subsynchronous resonance in power systems by ahmad m. Are there papers on subsynchronous resonance in power system. Simulation results have been carried out in power systems computeraided design, with system analysis conducted in matlab. The objective of this paper is to develop impedance models for the recti. A largescale integration of wind power will result in. Three aspects of subsynchronous resonance ssr related problems in power systems are addressed in this dissertation which aims at contributing to a better understanding of these problems. This research may be applicable when designing power supply systems for. Resonances in a highpower activefrontend rectifier system. What is ferro resonance in power system transients.
This potentially can lead to subsynchronous resonance ssr. Summary forced oscillations are problematic nov 29, 2005 alberta event documented instance of resonance between forced oscillation and interarea mode. The resonance between a seriescapacitorcompensated electric system and the mechanical springmass system of a turbinegenerator at subsynchronous frequencies, that is, at frequencies that are less than the synchronous frequency. The rotor frequency at this speed is called as subsynchronous frequency.
Emphasizing field testing to determine the data required, this book facilitates thorough and efficient oscillation and damping modeling using eigenvalues of a systems linear model. Industrial and commercial power system harmonic studies eaton. Systems that experience ssr exhibit dynamic oscillations at frequencies below the normal system base frequency 60 hz in. A single line diagram of the first benchmark model given by ieee committee for the study of subsynchronous resonance is as shown in figure 1. Design of subsynchronous resonance protection and reduction of torsional interaction in power systems mahdi hedayati department of electrical engineering azad university, gonabad branch gonabad, iran abstractan ssr problem has been noticed and caused repeated triggering of the protection. What is sub synchronous resonance in a power system. Mathematical calculations for subsynchronous system modeling subsynchronous resonance in power systems provides indepth guidance toward the parameters, modeling, and analysis of this complex subclass of power systems. Ferroresonance is a rare condition most likely to occur with threephase deltaconnected transformers. Subsynchronous resonance is addressed in three categories,i. Svc for resonance control in nampower electrical power system. This book provides a tutorial description of the mathematical models and equation formulations that are required for the study of a special class of dynamic power system problems, namely subsynchronous resonance ssr. Application of bifurcation theory to subsynchronous.
Ssr is a potential phenomenon which may arise in a power system when the mechanical system turbinegenerator exchanges energy with the electrical network 45. Energy analysis of power system low frequency oscillation of. Impact of increased wind power generation on subsynchronous. Increased system capacity generators, cables, transformers. An abstract of the thesis of connecting repositories. Power system impacts of decreasing resonance frequencies. The common term for describing the subject of this book is power qual ity. Damping subsynchronous resonance in power systems article pdf available in iet proceedings generation transmission and distribution 1496. Nayfeh electrical engineering abstract a bifurcation analysis is used to investigate the complex dynamics of two heavily loaded singlemachine in nitebusbar power systems modeling the characteristics of the board. Supplementary damping controller design for sssc to. Resonance risk for operational reliability of the grid slow poison effect.
Oct 04, 2017 ferroresonance is a rare condition most likely to occur with threephase deltaconnected transformers. The structure consists of a gain block with gain k s, a signal washout block and twostage phase compensation block. Power systems all around the world are facing with reduction in fossil fuel resources, environmental issues and energy crises. Purchase simulation of power system with renewables 1st edition. The generatbrs power dispatch is varied to study the behaviour of two complex eigenvalues near the point of strong resonance. Analysis of subsynchronous resonance in power systems by k. Apr 27, 2015 subsynchronous resonance is an electric power system condition where the electric network exchanges energy with a turbine at one or more of the natural fequencies of the combined system below the synchronous frequency of the system. Subsynchronous resonance is an electric power system condition where the electric network exchanges energy with a turbine at one or more of the natural fequencies of the combined system below the synchronous frequency of the system.
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