Operation and Test of the Navajo SSR Protective Equipment

Bowler, C.E.J.; Baker, Dennis J.; Mincer, N. A.; Vandiveer, P. R.

doi:10.1109/tpas.1978.354581

Cited by 63 publications

(17 citation statements)

References 1 publication

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“…In terms of countermeasures for SSO, many solutions have been proposed [6][7][8], and some of them have been put into practical application [9][10][11][12][13][14]. However, previous researches mainly focused on the growing SSO problem.…”

Section: Introductionmentioning

confidence: 99%

Analysis of frequently over‐threshold subsynchronous oscillation and its suppression by subsynchronous oscillation dynamic suppressor

Xiao

Luo

Zhang

et al. 2016

IET Generation, Transmission & Distribution

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To mitigate the frequently over-threshold subsynchronous oscillation (FOSSO) phenomenon which occurred in Hulunbuir power plant in the northeast of China, a novel equipment based on voltage source converter (VSC), named subsynchronous oscillation dynamic suppressor (SSODS) is developed and installed. In this study, the root cause of FOSSO is revealed by analysing the response characteristics of the system. Then the control strategy of the developed SSODS is presented. Damping characteristics of SSODS are analysed by the complex torque coefficient method. To verify the effectiveness of the control strategy and the physical controller of VSC, as well as provide initially optimised controller parameters for the field tests, real-time closed-loop tests are carried out. A novel method of torsional modal frequency measure for onsite commissioning test is proposed. The operation and field verification test of SSODS is introduced, and test results demonstrate that SSODS can mitigate the new SSO phenomenon dramatically, proving the validity of SSODS.

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Section: Introductionmentioning

confidence: 99%

Analysis of frequently over‐threshold subsynchronous oscillation and its suppression by subsynchronous oscillation dynamic suppressor

Xiao

Luo

Zhang

et al. 2016

IET Generation, Transmission & Distribution

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“…SEDC is a real-time control system that works through the excitation system by modulating the field voltage at the torsional frequencies. [10][11][12] Fig. 5 shows the block diagram of the SEDC.…”

Section: Damping Analysismentioning

confidence: 99%

Mitigation of sub-synchronous oscillation caused by TCSC using supplementary excitation damping controller

Jiang

Chen

et al. 2011

2011 International Conference on Electrical Machines and Systems

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The Test Signal Method is adopted to analyze the impact of thyristor controlled series capacitor (TCSC) on subsynchronous oscillation. The results show that the simulation system takes the risk of Sub-synchronous Oscillation (SSO) while TCSC is operating in the capacitive region. Supplementary excitation damping controller (SEDC) is used to mitigate SSO caused by TCSC. A new optimization method which is aimed for the optimal phase compensation is proposed. And this method is realized by using the particle swarm optimization (PSO) algorithm. The simulation results show that SEDC designed by this method has better suitability, and the secure operation scope of TCSC is greatly increased.Index Terms -sub-synchronous oscillation (SSO); supplementary excitation damping controller (SEDC); thyristor controlled series capacitor(TCSC); particle swarm optimization (PSO).

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“…Each occurrence of high amplitude transient torques in the shaft (irrespectively of the cause) results in some loss of shaft fatigue life. Both, transient torque amplification and dynamic instability are essentially caused by the same interactions that introduce negative damping in torsional modes of a turbine generator mechanical system [3,5]. The negative damping increases as the slip frequency moves closer to the frequency of one of torsional modes of the shaft.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the effectiveness of asymmetrical line compensation for mitigation of SSR in meshed networks

Adrees

Milanović

2014

IEEE PES Innovative Smart Grid Technologies, Europe

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This paper investigates the extent of the effectiveness of the phase-wise compensation scheme to mitigate subsynchronous resonance in a large network. The compensation scheme was proposed in 1990 to lessen the risk of subsynchronous resonance (SSR). This paper presents the studies performed on a 16 machines, 68 bus network to evaluate the effectiveness of the scheme on dynamic instability and transient torque amplification problem due to subsynchronous resonance. SSR analysis is performed using both frequency scanning technique and electromagnetic transient simulations.

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Operation and Test of the Navajo SSR Protective Equipment

Cited by 63 publications

References 1 publication

Analysis of frequently over‐threshold subsynchronous oscillation and its suppression by subsynchronous oscillation dynamic suppressor

Analysis of frequently over‐threshold subsynchronous oscillation and its suppression by subsynchronous oscillation dynamic suppressor

Mitigation of sub-synchronous oscillation caused by TCSC using supplementary excitation damping controller

Assessment of the effectiveness of asymmetrical line compensation for mitigation of SSR in meshed networks

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