SSR Alleviation using BVLC Supplementary Controlled SVS of Series Compensated Power System
01 Sep 2014-Indonesian Journal of Electrical Engineering and Computer Science-Vol. 12, Iss: 9, pp 6551-6559
TL;DR: In this paper, a bus voltage and line current (BVLC) supplementary subsynchronous damping controller (SSDC) is proposed to alleviate the sub synchronous resonance (SSR) and damp power system oscillations in a power system.
Abstract: The sub synchronous resonance (SSR) is a substantial problem in power system having a steam turbine generator connected to a series compensated transmission system. Flexible AC transmission systems (FACTS) controllers are widely applied to mitigate SSR. In this paper, a bus voltage and line current (BVLC) supplementary subsynchronous damping controller (SSDC) is proposed to alleviate subsynchronous resonance (SSR) and damping power system oscillations in a power system. Both eigenvalue investigation and time-domain simulation results verify that the proposed method can damp torsional oscillations of the power system with SVS bus voltage and line current (BVLC) supplementary controller. The results demonstrate that the proposed controller has a successful performance in minimizing the SSR. It is shown that the controller is able to stabilize all unstable modes. The study is performed on the system adapted from the IEEE first benchmark model. All the simulations are carried out in MATLAB/SIMULINK environment.
Citations
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TL;DR: In this paper, a line current and active power (LCAP) supplementary subsynchronous damping controller (SSDC) is proposed to damp the sub-sychronous resonance caused by series capacitors.
Abstract: Subsynchronous Resonance (SSR) is a growing problem in power systems having series compensated transmission lines. Subsynchronous resonance with low frequency that surpasses aggregate fatigue threshold of the generator shaft frequently could significantly reduce the shaft service life, which is a new problem that emerges in recent years. Flexible AC transmission systems (FACTS) controllers are widely applied to alleviate subsynchronous resonance. A line current and active power (LCAP) supplementary subsynchronous damping controller (SSDC) is proposed to damp subsynchronous resonance caused by series capacitors. Both eigenvalue investigation and time-domain simulation results verify that the proposed control strategy can effectively damping power system oscillations of the power system with SVS and SSDC. Time domain simulations using the nonlinear system model are also carried out to demonstrate the effectiveness of the proposed damping controller. The recommended control approach has been accumulated with the IEEE first benchmark model for SSR study. The analysis indicates that SVS using the proposed control strategy has better alleviation effect and output characteristics. All the simulations are validated by using MATLAB/Simulink environment.
3 citations
Cites background from "SSR Alleviation using BVLC Suppleme..."
...It is found that with the remote generator speed a simple subsynchronous damping controller (SSDC) can damp all the SSR modes with critical level of compensation [13-16]....
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TL;DR: This paper presents a detailed study on Sub-synchronous resonance in a Single machine connected to an infinite bus system by employing Bifurcation Theory and the results obtained on replacing the fixed series compensation of the line by Static Synchronous Series Compensator resulted in the mitigation of Sub- synchronous Resonance.
Abstract: This paper presents a detailed study on Sub-synchronous resonance in a Single machine connected to an infinite bus system by employing Bifurcation Theory. The synchronous machine model considered is a two-axis model, the turbine system is a six mass system. A comparative study of Sub-synchronous resonance for the two-axis synchronous machine models 1.1, 2.1 and 2.2 under constant excitation is presented in this paper. The effect of adding an exciter, power system stabilizer and Static Synchronous Series Compensator to the SMIB system, incorporated with a 2.2 synchronous machine model on the bifurcations of SSR is also investigated. The results obtained on replacing the fixed series compensation of the line by Static Synchronous Series Compensator resulted in the mitigation of Sub-synchronous Resonance. The results obtained for all the above-considered cases are compared with eigenvalue analysis and validated using transient analysis .
2 citations
Cites methods from "SSR Alleviation using BVLC Suppleme..."
...Bifurcation Eigenvalue analysis Static synchronous series compensator (SSSC) Sub-synchronous resonance (SSR) Transient analysis Copyright © 2019 Institute of Advanced Engineering and Science....
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...This paper presents the effect of synchronous machine damper windings on Hopf bifurcations of SSR....
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...SSR occurs either due to “Induction generator effect” or due to “Torsional Interaction and Amplification Effect”....
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...However, the torque shaft oscillations were neglected until the first experience of SSR at the Mohave Generating Station in 1970, followed by another Indonesian J Elec Eng & Comp Sci ISSN: 2502-4752 Dynamic bifurcation analysis and mitigation of ssr in smib system (Shruthi Ramachandra) 1129 identical situation in 1971 [7]....
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...The effect of adding an exciter, power system stabilizer and Static Synchronous Series Compensator to the SMIB system, incorporated with a 2.2 synchronous machine model on the bifurcations of SSR is also investigated....
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References
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Book•
24 Dec 1999
TL;DR: The Flexible AC Transmission System (FACTS)—a new technology based on power electronics—offers an opportunity to enhance controllability, stability, and power transfer capability of ac transmission systems.
4,217 citations
"SSR Alleviation using BVLC Suppleme..." refers background in this paper
...The SSR phenomenon was discovered during the extensive analysis work following these events [1-2]....
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Book•
01 Aug 2009
501 citations
"SSR Alleviation using BVLC Suppleme..." refers background in this paper
...They are certainly playing an important and a major role in the operation and control of modern power systems [3-6]....
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Book•
01 Dec 1989
TL;DR: In this article, the authors provide an introduction to subsynchronous resonance in power systems and include material on system modeling, system parameters, and system analysis, as well as a detailed discussion of the relationship between the two properties.
Abstract: This book provides an introduction to subsynchronous resonance in power systems and includes material on system modeling, system parameters, and system analysis.
331 citations
"SSR Alleviation using BVLC Suppleme..." refers background in this paper
...One of the widely referred examples of such applications is [7] where thyristor controlled VAR compensator is used for damping subsynchronous oscillations....
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01 Jan 2002
301 citations
"SSR Alleviation using BVLC Suppleme..." refers methods in this paper
...A practical installation of SVC for SSR mitigation is reported in [8-16]....
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Book•
31 Oct 1998TL;DR: In this article, the authors present an analysis of the effect of torsional oscillations in parallel-connected turbine generators on the performance of the generator and the generator's mechanical system.
Abstract: 1. Introduction.- 1.1 General.- 1.2 Definitions of SSR.- 1.3 Interactions with power system controllers.- 1.4 FACTS Controllers.- 1.5 Methods of Analysis of SSR.- 1.6 Chapter outline.- 2. Modelling of Turbine Generator.- 2.1 Introduction.- 2.2 Synchronous machine model.- 2.3 Park's transformation.- 2.4 Per unit quantities.- 2.5 Operational impedances and equivalent circuits.- 2.6 Modelling of excitation control system.- 2.7 Modelling of turbine generator mechanical system.- 2.8 Modelling of turbine and governor.- 2.9 Modelling and analysis of the mechanical and prime mover system.- 2.10 Synchronous generator modelling for transient simulation.- 3. Modelling of the Electric Network.- 3.1 Introduction.- 3.2 Transmission lines.- 3.3 Transformation using ? - ? variables.- 3.4 State equations.- 3.5 Interface between the network and generator.- 3.6 Impedance functions.- 3.7 Simulation of electromagnetic transients.- 4. Analysis of SSR with Fixed Series Compensation.- 4.1 Introduction.- 4.2 Analysis of induction generator effect: frequency scanning method.- 4.3 Analysis of torsional interaction(TI).- 4.4 State equations and eigenvalue analysis.- 4.5 An algorithm for computing torsional modes.- 4.6 Countermeasures for SSR.- 4.7 Torsional oscillations in parallel connected turbine generators.- 5. Interactions with Power System Stabilizer.- 5.1 Introduction.- 5.2 Basic concept in the application of PSS.- 5.3 Design of PSS.- 5.4 Torsional interaction with PSS.- 5.5 A case study.- 6. Interactions with HVDC Converter Control.- 6.1 Introduction.- 6.2 HVDC converters and control.- 6.3 Modelling of HVDC system for study of torsional interactions.- 6.4 Analysis of torsional interactions - A simplified approach.- 6.5 A case study.- 6.6 A simplified damping torque analysis.- 6.7 Control of torsional interaction.- 7. Interactions with Shunt Compensators.- 7.1 Introduction.- 7.2 Static Var Compensator.- 7.3 Torsional Interactions with SVC.- 7.4 Static Condenser(STATCON).- 7.5 Torsional interactions with STATCON.- 7.6 A simplified analysis of torsional interaction with voltage controller.- 8. Interactions with Series Compensators.- 8.1 Introduction.- 8.2 Thyristor Controlled Series Compensator.- 8.3 Modelling of TCSC for SSR studies.- 8.4 Mitigation of SSR with TCSC.- 8.5 Static Synchronous Series Compensator (SSSC).- 8.6 Torsional interactions with SSSC.- Appendices.- A- Data on IEEE Benchmark Models.- A.1 IEEE First Benchmark Model ( FBM ).- A.2 IEEE Second Benchmark Model ( SBM ).- B- Calculation of Initial Conditions.- C- Abbreviations.- References and Bibliography.
283 citations
"SSR Alleviation using BVLC Suppleme..." refers methods in this paper
...A practical installation of SVC for SSR mitigation is reported in [8-16]....
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