Parameter sensitivity analysis for subsynchronous oscillations in. We now combine the incremental shaft model of section 4. Analysis of subsynchronous resonance in power systems. Options and signal processing techniques for subsynchronous resonance detection yu xia, brian k. Subsynchronous resonance mitigation for seriescompensated. 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. The doubly fed induction generator dfig wind energy conversion system wecs has many merits and, as a result, large numbers have been installed to date. An idea is presented for damping ssr in power systems using a doubleorder svs auxiliary controller in combination with continuous controlled series compensation ccsc and an induction machine. In great britain gb, increased levels of wind penetration require substantial reinforcements for transmitting power from scotland to england.
Simulation and analysis of subsynchronous resonance in a series compensated transmission system article pdf available in international journal of power electronics and drive systems 53. Therefore, proper understanding and analysis of ssr is to be carried out while planning series capacitor compensation in power systems. Three aspects of subsynchronous resonance ssr related problems in power. Johnson, normann fischer, henian xia abstract detecting subsynchronous resonance ssr in power systems in an accurate and fast manner is a major challenge for steam turbine and doubly fed induction generator dfig protection. Subsynchronous resonance in power systems eigenvalues and. Analysis of subsynchronous resonance effect in series compensated line with booster transformer international journal of electrical and electronics engineering ijeee, issn print. Anderson, a noted expert on power systems, presents an analytical and technical approach to power system protection. In this paper, various approaches and challenges for the simulation of power system dynamics are discussed and.
Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle. To stabilise the unstable subsynchronous resonance ssr modes, an approach based on modal control theory is developed for the design of the ssdc. 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. With the use of above software, the first benchmark model is developed and simulated. Resonance investigation, proceeding european power and energy systems europes 2004 3 nadia yousif, and majid aldabbagh, subsynchronous resonance assessment using time frequency distribution algorithm, australasian universities power engineering conference aupec 2004, brisbane, australia. 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. 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.
Zobrist kenneth moore, director of ieee press marilyn. In the national grid 2020 vision, offshore and onshore infrastructure reinforcements have been proposed, the inland reinforcement including series compensation fixed capacitors. Oct 31, 1998 analysis of subsynchronous resonance in power systems book. Analysis of subsynchronous resonance in power systems power electronics and power systems kindle edition by k. Analysis of subsynchronous resonance in power systems power electronics and power systems pdf,, download ebookee alternative excellent tips for a better ebook reading experience. Numerous and frequentlyupdated resource results are available from this search. Subsynchronous resonance in power systems by p m anderson, b l agrawal and j e van ness topics.
Subsynchronous resonance in power systems the importance of these transfer functions is that the data are generally in the form supplied by the manufacturer. Eigenvalue analysis of ieee fbm for subsynchronous. Control strategy of unified power flow controller upfc utilizing dq decoupling control is deduced in this paper, which can closely follow the control orders of the active and reactive power. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Design of subsynchronous resonance protection and reduction. Power electronics resonant switching tutorialspoint. Numerous well documented tools are available for power system modelling and analysis. This system is an ieee benchmark 1 used to study subsynchronous resonance and particularly torque amplification after a fault on a seriescompensated power system. Nasa images solar system collection ames research center. Subsynchronous resonance accessscience from mcgrawhill. A comparison of different signal selection options and. Pdf is a file format developed by adobe systems for representing documents in. Van ness 1990 softcover 282pp 0780353501 power system protection p.
What is ferro resonance in power system transients. Xie, parameter sensitivity analysis for sub synchronous control interactions in wind integrated power systems, submitted to cigre grid of the future. In this paper a novel concept of a static var system svs auxiliary controller application for damping subsynchronous resonance in power systems has been proposed and demonstrated. Pdf merger, combine pdf files into one file online. Thorvaldsson abb power systems vasteras, sweden udo kleyenstuber nampower windhoek, namibia septimus boshoff r. This study aims to conduct the subsynchronous ss resonance analysis of a multimachine power system incorporating doubly fed induction generator dfig or permanent magnetic synchronous generator pmsgbased wind farm. Analysis of subsynchronous resonance in power systems power. Henschel, a simplified system for subsynchronous resonance studies, proceedings of the international conference on power system.
There is a tendency for high circulating currents to be established, that of which will increase the active power demand. Subsynchronous resonance article about subsynchronous. Effects of subsynchronous resonance on power systems 9 iv. Since the early 1930s, numerous researchers have addressed issues relating to these problems. The resonance condition arises in the series rlc circuit when the inductive reactance is equal to the capacitive reactance x l x c or x l x c 0. Systems that experience ssr exhibit dynamic oscillations at frequencies below the normal system base frequency 60 hz in north. Longterm simulations, transient stability studies, and electrical transient and subsynchronous resonance studies are singled out as especially important classes of power system simulations the mathematical requirements for carrying out sim plified transient stability simulations of power systems are. Design challenges for numerical ssr protection summary we report on the development of a modern numerical ssr protection to replace an existing analogue relay that no longer could be adapted to changing operating conditions. Power electronics resonant switching resonant switch converters refers to converters that have inductor and capacitor lc networks and whose current and voltage waveforms vary in a sinusoidal man.
The dfig wecs operation, under both steady state and fault conditions, is of great interest since it impacts on. 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. A novel twodegreeoffreedom 2dof control strategy combined with a damping control loop is designed and analyzed for enhancing the system. Analysis of subsynchronous resonance in power systems k. Ensure that you keep your vital records secure while you.
Pdf damping subsynchronous resonance in power systems. Subsynchronous resonance in doublyfed induction generator based wind farms selam chernet c selam chernet, 2016. Once you merge pdfs, you can send them directly to. Download it once and read it on your kindle device, pc, phones or tablets. Not nearly as often, ferroresonance has also been documented in yy transformers and in aerial threepot banks served by longdedicated aerial c. What is sub synchronous resonance in a power system. Subsynchronous resonance risk assessment in interconnected. Subsynchronous resonance and its mitigation for power. How to separate or combine pdf documents before filing one legal. This research article proposes a powerful fractionalorder pi controller to mitigate the subsynchronous oscillations in turbinegenerator shaft due to subsynchronous resonance ssr with flexible ac transmission system devices such as static synchronous compensator statcom and unified power flow controller upfc.
Anderson 1999 hardcover 44pp 0780334272 power and communication cables. Shaft torque amplification transient shaft stresses. The system consists of a single generator connected. According to this classification, sso was mainly categorized into ssr and ddsso, as shown in fig. An overview of resonance and ferroresonance in power systems. Ps2pdf free online pdf merger allows faster merging of pdf files without a. This work proposes a strategy to mitigate subsynchronous resonance ssr in synchronous generators using variablespeed wind energy conversion systems wecss based on full converter wind turbines. A concise presentation of doubly fed induction generator.
Time constant for damping is in the order of a few seconds up to half a minute. Ferro resonance occurrence in power transformer introduction ferro resonance can be described in simple terms as a disturbance caused by high voltage level leading to overvoltage and also due to distortion of overcurrent. Once files have been uploaded to our system, change the order of your pdf documents. After several attempts, the ieee power system dynamic working group came up with standard definitions and classification of sso in 1992. Damping of torsional oscillations a dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of doctor of philosophy major. Dec 03, 2018 whenever the load on an alternator is increased, the rotor speed slightly decreases, this speed is called as subsynchronous speed. Combine multiple pdf files into one single pdf document. A novel control scheme is presented for the design of a supplementary subsynchronous damping controller ssdc equipped at the rectifier end of an hv dc link that is connected in parallel with an existing resonating ac line. 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. Electrical engineering by kim touy khu in charge of major work approved iowa state university ames, iowa 1977. A largescale integration of wind power will result in. Bhavik prajapati, vadodaragujarat,india abstractssr basically an electrical power system condition where electrical network exchange energy with the turbine generator at one or more natural.
Van ness, subsynchronous resonance in power systems. The objective of this paper is to develop impedance models for the recti. 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. Simulation and analysis of subsynchronous resonance in a series compensated transmission system article pdf available in international journal of power electronics and drive systems. In power systems, the witness of complex nonlinear oscillations, which are not predicted by the classical eigenvalue analysis of a linearized model, has prompted a growing interest in geometric methods of nonlinear dynamics, especially bifurcation methods.
This free online tool allows to combine multiple pdf or image files into a single pdf document. Subsynchronous resonance in power systems 3 authors paul m. Box 31 piscataway, nj 0885531 ieee press editorial board roger f. Application of an auxiliary controlled static var system. Subsynchronous resonance ssr induction generation effect ige ige. This paper presents an overview of the forthcoming technical brochure written by cigre wg c4.
I dont know how this can be a good thing in power engineering. Oct 22, 2014 im always told you should strive for unity power factor, but unity p. This should include, the wiley titles, and the specific portion of the content you wish to reuse e. Subsynchronous resonanceseries compensated hv lines and. The linearised equations involving the dynamics of steam turbine generator, wind farm, shunt capacitor, transmission line, and load are derived. A supplementary active and reactive power to be delivered by wecss located near synchronous generators is designed to reduce the ssr. Subsynchronous resonance in power systems pdf free download. Subsynchronous resonance is an electric power system condition where the electric network exchanges energy with a turbine generator at one or more of the natural frequencies of the combined system below the synchronous frequency of the system. Harmonic problems are increasing on mv systems, especially with the application of power factor correction capacitors or extensive underground networks that resulting resonances close to the fifth harmonic.
Subsynchronous resonance mitigation using variablespeed wind. So, it works for all operating systems including mac, windows, and linux. Power system impacts of decreasing resonance frequencies. 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. Systems that experience ssr exhibit dynamic oscillations at frequencies below the normal system base frequency. Subsynchronous resonance in power systems book, 1990. Read a bifurcation analysis of subsynchronous oscillations in power systems, electric power systems research on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Shortly after the second event, it was determined that the torsional oscillations were caused by torsional interaction, which is a type of subsynchronous resonance ssr. Svc for resonance control in nampower electrical power system.
How to separate or combine pdf documents before filing. Pdf zusammenfugen pdfdateien online kostenlos zu kombinieren. Determination of sub synchronous control interaction. This paper describes two case studies of solving harmonic resonance problems on distribution systems with the design of. Subsynchronous resonance in power systems provides indepth guidance toward the parameters, modeling, and analysis of this complex subclass of power systems. Analysis of subsynchronous resonance in power systems core. An svs controller, known as the combined reactive power and frequency crpf auxiliary controller has been developed and incorporated in the svs control system. Overview of emerging subsynchronous oscillations in. Read application of an auxiliary controlled static var system for damping subsynchronous resonance in power systems, electric power systems research on deepdyve, the largest online rental service for scholarly research with thousands. Pdf simulation and analysis of subsynchronous resonance in. Study of large power systems after severe disturbances.
Control and stability, by anderson and fouad 14, power system stability, vol l, 2, and 3, by. Subsynchronous resonance ssr problems in series compensated steamturbine power systems coexist with the beneficial effects provided by the series capacitors. Subsynchronous oscillation is an electric power system condition where the electric network exchanges significant energy with a turbinegenerator at one or more of the natural frequencies of the combined system below the synchronous frequency of the system following a disturbance from equilibrium. Ramey, planning hvdc and facts in new england, ieeepes power systems conference and exposition, 2009, psce 09. An abstract of the thesis of oregon state university. Mechanical shaft oscillations and interaction with the electrical power system. Svc for resonance control in nampower electrical power system m. Power pdf is flexible enough to serve any industry, yet powerful enough to edit any document. 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. The subsynchronous resonance ssr characteristics of a series compensated system equipped with upfc are studied, and the results reveal that ssr characteristics of the system. A serious damage threat the safe operation of the power grid. Review and mitigation of subsynchronous resonance using.
There is increased worldwide wind power generation, a large percentage of which is grid connected. In a world of huge, interconnected networks that can be completely blacked out by disturbances, power system protection offers you an improved understanding of the requirements necessary for prompt and accurate corrective action. A novel approach for damping subsynchronous resonance. Pdf merge combinejoin pdf files online for free soda pdf. Thakre1, rambabu motamarri1 and chaitanya somu2 background series capacitor compensation has been broadly employed in power system to cancel. Analysis of subsynchronous resonance in power systems kluwer international series in engineering and computer science, issn 08933405 volume 471 of kluwer international series in engineering and computer scinece. Steam turbine and governor system subsynchronous resonance.
In the process ferro resonance, all the oscillatory processeswhich occur in an electric circuit are included. Masssimo bongiorno, andreas petersson and evert agneholm, the impact of wind farms on subsynchronous resonance in power systems, april 2011. Eigenvalue analysis of ieee fbm for subsynchronous resonance studies rushabhkumar d. A bifurcation analysis of subsynchronous oscillations in. Fractionalorder pi based statcom and upfc controller to. An active power control strategy for a dfigbased wind farm to depress the subsynchronous resonance of a power system, int. 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. Edris s fifteenth national power systems conference npsc, iit bombay, december 2008 535. Series resonance in the rlc series circuit, when the circuit current is in phase with the applied voltage, the circuit is said to be in series resonance. However, generally accepted models for representing wind turbines in power system dynamics simulations are presently not generally available. Ieee fbm was created by the ieee working group on subsynchronous reso nance in 1977 for the purpose of establishing a benchmark model which can be used as a test bench for the comparison of different methods of computer based analysis and simulation. Impedance based resonance analysis in a vschvdc system.
Pdf simulation and analysis of subsynchronous resonance. Oct 04, 2017 ferroresonance is a rare condition most likely to occur with threephase deltaconnected transformers. Torsional mechanical damping probably comes mainly from the steambut also from couplings. 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. Leon, integration of dfigbased wind farms into series compensated transmission systems, ieee trans. The rotor frequency at this speed is called as subsynchronous frequency. There are two other types of subsynchronous resonance, the induction generator effect and torque amplification. Analysis of subsynchronous resonance in power systems abstract approved.
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