The transient power fluctuation of the load is randomly. This system is an ieee benchmark 1 used to study subsynchronous resonance and particularly torque amplification after a fault on a seriescompensated power system. In a power system which includes seriescompensated transmission lines, resonance conditions may arise in the electrical circuit consisting of an inductance and. Ssr is a potential phenomenon which may arise in a power system when the mechanical system turbinegenerator exchanges energy with the electrical network 45. Sub synchronous resonance damping in interconnected power. Pdf simulation and analysis of subsynchronous resonance. Download it once and read it on your kindle device, pc, phones or tablets. Dec 03, 2018 whenever the load on an alternator is increased, the rotor speed slightly decreases, this speed is called as subsynchronous speed. The operation mode selector block has only one task for setting a manual constant. International journal of innovative research in science.
Index termssubsynchronous resonance ssr, highvoltage directcurrent hvdc. Subsynchronous resonance risk assessment in interconnected. Subsynchronous resonance will become an important network condition to investigate when the new technologies are introduced in power systems. The effect of wind turbines on subsynchronous resonance date. Subsynchronous resonance in power system one of the conventional series compensators in power systems are series capacitors that are employed for compensation of the inductive reactance of the transmission lines. 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. Effects of subsynchronous resonance on power systems 9 iv.
Analysis of subsynchronous resonance in power systems book. This paper presents an overview of subsynchronous resonance issues in wind turbines including, analysis methods, modeling, the impact of control. Study of subsynchronous resonance and analysis of ssr ranjit m. Subsynchronous resonance screening study for the pjm. Subsynchronous resonance damping in interconnected power systems. Whenever the load on an alternator is increased, the rotor speed slightly decreases, this speed is called as subsynchronous speed. Series compensator for damping of subsynchronous resonance oscillations, international journal of engineering ije. International journal of innovative research in science, engineering and technology vol. Subsynchronous resonance ssr problems in series compensated steamturbine power systems coexist with the beneficial effects provided by the series capacitors. 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. Analysis of subsynchronous resonance ssr phenomena in power systems first day. Pdf simulation and analysis of subsynchronous resonance in. A bifurcation analysis of subsynchronous oscillations in power systems article pdf available in electric power systems research 471. Pdf a bifurcation analysis of subsynchronous oscillations.
Sub synchronous resonance ssr is a condition that can exist on a power system where the network has natural frequencies that fall below the fundamental frequency of the generated voltages and produce subsynchronous oscillation of the steam turbine and generator shaft. Eigenvalue analysis of subsynchronous resonance study in series compensated wind farm gajanan v. What is sub synchronous resonance in a power system. With the use of above software, the first benchmark model is developed and simulated. Subsynchronous resonance ssr problems in series compensated steam turbine power systems coexist with the beneficial effects provided. Under all these circumstances, there is a risk of ssr conditions. Subsynchronous resonance and its mitigation for power. Subsynchronous resonance is a phenomenon in which the resonant frequency of the turbine generator shaft coincides with a natural resonant frequency of the electrical system such that there is a sustained, cyclic exchange of energy between the mechanical shaft and the electrical system. This device has been widely used in ac transmission system to enhance the power transfer capability with reducing the line reactance. Application of bifurcation theory to subsynchronous resonance in power systems by ahmad m. Mar 21, 2011 subsynchronous resonance is a phenomenon in which the resonant frequency of the turbine generator shaft coincides with a natural resonant frequency of the electrical system such that there is a sustained, cyclic exchange of energy between the mechanical shaft and the electrical system. Det ailed model of the study systems are developed and. Analysis of subsynchronous resonance in power systems power electronics and power systems pdf,, download ebookee alternative practical tips for a better ebook reading experience. 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.
Overview of subsynchronous resonance analysis and control. 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. 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. Steam turbine and governor system subsynchronous resonance. 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. Overview of subsynchronous resonance analysis and control in.
Considering the rapid growth of wind turbines applications in power systems, the dynamic behavior of wind turbines, especially the subsynchronous resonance ssr is of interest to researchers. Use features like bookmarks, note taking and highlighting while reading analysis of subsynchronous resonance in power systems power electronics and power systems. Analysis of subsynchronous resonance ssr phenomena in power systems page 1 workshop. Case studies and experiences with subsynchronous resonance. Kundur, power systems stability and control, new york, ny,usa. Eigenvalue analysis of subsynchronous resonance study in. Analysis of subsynchronous resonance in power systems. Damping subsynchronous resonance in power systems article pdf available in iet proceedings generation transmission and distribution 1496. Analysis of subsynchronous resonance characteristics and. Pdf damping subsynchronous resonance in power systems. Currents flowing in the ac network have two components.
Subsynchronous resonance and factsnovel control strategy for. Simplified transmission and generation system analysis procedures for subsynchronous resonance problems. 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. A methodology for estimating the parameters of steam. Series capacitor compensation is used to improve the utilization of existing power systems. 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. Elmarsafawy, use of frequencyscan techniques for subsynchronous resonance analysis of a practical series capacitor compensated ac network, proceedings of iee generation, transmission and distribution conference, vol.
Application of bifurcation theory to subsynchronous. Resonance, ieee transactions on power apparatus and systems, vol. Oct 31, 1998 analysis of subsynchronous resonance in power systems book. A bifurcation analysis of subsynchronous oscillations in. 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 may vary significantly with. Subsynchronous resonance in doublyfed induction generator. The increase of coal and nuclear power steam turbines over the past few decades combined with transmission line series capacitors creates a potential drawback known as subsynchronous resonance ssr by increasing the risk of interaction between electrical power systems and turbinegenerators rotor torsional systems. Subsynchronous resonance accessscience from mcgrawhill. Analysis of subsynchronous resonance in power systems power electronics and power systems kindle edition by k. 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.
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. Subsynchronous resonances studies digital asset management. 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. The subsynchronous resonance ssr is an important problem in the power system, and especially the series compensated transmission lines may cause. Application of bifurcation theory to subsynchronous resonance. Analysis of subsynchronous resonance in power systems by k. Subsynchronous resonance and its mitigation for power system. Sub synchronous resonance damping in interconnected power systems. Edris s fifteenth national power systems conference npsc, iit bombay, december 2008 535. The paper present captured field data of subsynchronous and super synchronous resonance at the generator terminals of a nuclear power plant and at a transmission substation from a field study during several years. Analysis of subsynchronous resonance effect in series compensated line with booster transformer international journal of electrical and electronics engineering ijeee, issn print. 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. 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. 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 effect of wind turbines on subsynchronous resonance. System configuration the system considered in the present work is the ieee second benchmark model 5 with additional. Subsynchronous resonance screening study for the pjm regional. Submitted in the fulfillment of the academic requirements for the degree of doctor of philosophy in engineering, in the school of electrical, electronic and computer engineering, university of. Design of subsynchronous resonance protection and reduction.
A novel approach for damping subsynchronous resonance using a. 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 power. Power systems all around the world are facing with reduction in fossil fuel resources, environmental issues and energy crises. An abstract of the thesis of connecting repositories. Therefore, proper understanding and analysis of ssr is to be carried out while planning series capacitor compensation in power systems. Thus, new approaches for generating lowcarbon, renewable energy sources such as natural gas, biogas, wind power, solar photovoltaic, fuel cells, micro turbines, etc. 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. The rotor frequency at this speed is called as subsynchronous frequency. June 2014 with the rapid growth of the penetration of wind power into the power system, fixed series compensation is considered as an economic solution to increase power transfer capability.
Subsynchronous resonance damping in interconnected. A novel approach for damping subsynchronous resonance. Analysis of subsynchronous resonance in power systems k. Since electromechanical interactions between electrical loads and turbinegenerator are seldom discussed, this paper investigates the torsional vibrations in turbinegenerator shafts and blades subject to real and reactive power variations from a largescale eaf plant. The major advantage of this transformation is that the inductance coefficients both self k.