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The Strategy of Damping SSO with TCSC

Author: LiBing
Tutor: HeRuiWen
School: Guangdong University of Technology
Course: Proceedings of the
Keywords: Subsynchronous oscillation TCSC Subsynchronous damping characteristics Times frequency impedance characteristics
CLC: TM732
Type: Master's thesis
Year: 2011
Downloads: 62
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Abstract


Series capacitor compensation and DC transmission system to improve power system stability and line transmission capacity will be more widely used , which may lead to sub-synchronous oscillation problems inevitably become the safe operation of power grids can not be ignored . TCSC is a typical representative of the series compensation device , which provides the possibility for the Suppression of performance due to its fast and flexible adjustment . Therefore, the larger theoretical significance and practical value TCSC Suppression of research . This article by changing the parameters of the power system and compensation device TCSC suppress subsynchronous oscillation effect , and the corresponding suppression strategy . The main research work are as follows: First, the generation of sub-synchronous oscillation parameter analysis , the key parameters of the steady-state sub-synchronous resonance and transient torque amplification apparent impedance and transient electromagnetic torque , the DC transmission system and power system stabilizer subsynchronous oscillation generated key parameter is the time constant magnification ; simulation analysis of the oscillation characteristics of the system under different sub-synchronous signal interference . At the same time , the use of the main frequency oscillation complex torque coefficient method ; eigenvalue analysis of the excitation system oscillation amplitude and frequency ; Second , and TCSC different trigger angle and capacitance values the operating characteristics of the simulation study and found that the ratio of the capacitance and inductance tolerance / emotional work area closely associated by simulation from draw relevant conclusions ; study for TCSC on subsynchronous oscillation suppression capacitor voltage changes the algorithm principle is to control the amount of two suppression and study TCSC times frequency impedance characteristics , provide a theoretical basis for the inhibition mechanism : Finally, TCSC suppress subsynchronous oscillation characteristics of the simulation model engineering . To change the interference of outside subsynchronous signal , trigger angle size , the size of the study inhibitory effect of series compensation degree , and in accordance with the simulation graphic and parameters analysis , combined with subsynchronous damping characteristics of the power system and the TCSC times frequency impedance characteristics research corresponding the suppression strategy . In this thesis funded by the University in Guangdong Province Key Laboratory of \

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system scheduling, management, communication > The operation of the power system
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