A unified control scheme for power system transient stability enhancement through preventive and emergency control

Siddiqui, Shahbaz Ahmed; Verma, Kusum; Niazi, K. R.; Fozdar, Manoj

doi:10.1002/etep.2086

Cited by 19 publications

(17 citation statements)

References 36 publications

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“…All components are connected through the network that is represented by the nodal voltage equations:

∆ I_{xy} = Y_{redu} ∆ U_{xy},

where Y redu is the reduced nodal admittance matrix with the intermediate buses eliminated. Combining Equations , , and , the state‐space model of a power system is set up that is used in solving either eigenvalues or system trajectories as follows:

∆ \overset{X}{true} = ([],, A + B_{I} {(Y_{italicredu}^{- 1} - D_{I})}^{- 1} C) ∆ X + ([],, B_{c} + B_{I} {(Y_{italicredu}^{- 1} - D_{I})}^{- 1} D_{c}) ∆ U_{c} .

…”

Section: Building Feedback Modelmentioning

confidence: 99%

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Developing feedback model for power system dynamic sensitivity analysis

Hill

et al. 2017

Int Trans Electr Energ Syst

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Summary Since sensitivity analysis provides information on changes of the system dynamics with respect to changes of system parameters, it has been long recognized as an important tool for power system small‐signal stability analysis and controller designs. Sensitivity analysis is now much more important due to all the anticipated changes of future power systems, so more efficient and feasible methods are needed. The current sensitivity analysis methods are either simulation based or eigenvalue based. The eigenvalues and/or the time domain trajectories of the investigated system are solved for scenarios both before and after the parameter changes to evaluate the impacts of these changes on the system dynamics. However, both methods are actually numerically based, so often insufficient in fully revealing system physical characteristics. This paper analyzes the drawbacks of the available methods for analyzing the dynamic impacts of parameter changes in a power system and then develops a feedback‐based model for sensitivity analysis. The model is easier to identify the dynamic interactions of components; meanwhile, it also offers a new perspective on sensitivity analysis from the frequency domain. Case studies of increasing complexity demonstrate fully that the application of the proposed method reveals new insights on power system dynamics that conventional methods could not do.

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“…All components are connected through the network that is represented by the nodal voltage equations:

∆ I_{xy} = Y_{redu} ∆ U_{xy},

∆ \overset{X}{true} = ([],, A + B_{I} {(Y_{italicredu}^{- 1} - D_{I})}^{- 1} C) ∆ X + ([],, B_{c} + B_{I} {(Y_{italicredu}^{- 1} - D_{I})}^{- 1} D_{c}) ∆ U_{c} .

…”

Section: Building Feedback Modelmentioning

confidence: 99%

“…where Y redu is the reduced nodal admittance matrix with the intermediate buses eliminated. Combining Equations 11, 12, and 13, the state-space model of a power system is set up that is used in solving either eigenvalues or system trajectories [29][30][31] as follows:…”

Section: Building Feedback Modelmentioning

confidence: 99%

Developing feedback model for power system dynamic sensitivity analysis

Hill

et al. 2017

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…Some studies indicate that a betterment in transient and voltage stability may be observed when FSWTs are replaced by the DFIG wind turbines, but other types of WECS are not considered . In Khani et al, a comprehensive transient stability analysis has been carried out with regarding of 2‐mass and 3‐mass shaft models of drive train.…”

Section: Introductionmentioning

confidence: 99%

Influence of PMSG-based wind turbine on transient stability of synchronous generators-a comparative study

Sadeghfam

Tohidi

Rostami

2018

Int Trans Electr Energ Syst

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Summary Penetration of wind power plants in power systems is increasing, which can influence all over the system stability. In this paper, the impacts of variable speed wind turbines based on permanent magnet synchronous generator on transient stability of power systems are evaluated. An analytical method is investigated, and the rotor angle stability of synchronous generators is analyzed in the presence and absence of such wind turbines. Furthermore, it is elaborated under different conditions, eg, different penetration levels of wind power, different control modes of permanent magnet synchronous generator‐based wind turbines, and different distances of wind turbines from synchronous generators. Extensive simulations are carried out under abovementioned conditions, and the results are compared and discussed.

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“…In addition, a real‐time transient instability detection based on voltage trajectories is developed in the work of Deng et al, which a perturbed voltage integral is used to represent the desynchronization of the incoherent generators to assess transient stability. A general prefault transient stability estimation index using a wide area phasor measurement system is proposed in the work of Moaddabi et al A unified approach for transient stability enhancement following large disturbance is proposed in the work of Siddiqui et al, which is enhanced with the preventive and emergency control measurements.…”

Section: Introductionmentioning

confidence: 99%

Predictive out-of-step relay based on equal area criterion and PMU data

Alinezhad

Karegar

2017

Int. Trans. Electr. Energ. Syst.

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This paper proposes a novel-predictive and setting-free out-of-step protection technique based on synchronized phasor measurements and equal area criterion. Generator instability is predicted by comparing the acceleration and deceleration areas corresponding to the fault and postfault conditions, respectively. For each generator, the acceleration area during fault condition is calculated directly using the generator output power and rotor angle in real time. As soon as the fault is cleared, the deceleration area is predicted based on estimating the postfault Thévenin equivalent of the power network. The proposed technique is verified on the New England 39-bus test network. The effect of the proposed technique on improvement of the power network stability is compared with that of the well-known impedancebased out-of-step relay. KEYWORDS equal area criterion, impedance-based OOS relay, out-of-step, phasor measurement unit, Thévenin equivalent

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A unified control scheme for power system transient stability enhancement through preventive and emergency control

Cited by 19 publications

References 36 publications

Developing feedback model for power system dynamic sensitivity analysis

Developing feedback model for power system dynamic sensitivity analysis

Influence of PMSG-based wind turbine on transient stability of synchronous generators-a comparative study

Predictive out-of-step relay based on equal area criterion and PMU data

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