Generation Rescheduling Methods to Improve Power Transfer Capability Constrained by Small-Signal Stability

Chung, C.Y.; Wang, Lei; Howell, F.; Kundur, P.

doi:10.1109/tpwrs.2003.820700

Cited by 144 publications

(94 citation statements)

References 9 publications

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“…The critical contingencies were selected on the basis of dynamic contingency selection base on damping factor [26,27] . The Damping factor ς which is defined as the damping ratio of the critical inter-area rotor angle mode in the system under an operating condition is smallsignal secure if C ς ≥ ς where C ς is the damping threshold (normally in the range of 3-5%) [28] . But in this study C ς is referred to a base case critical inter-area mode damping factor.…”

Section: Selection Of Feedback Signals For Svc Devicementioning

confidence: 99%

Optimal Location of Static Var Compensator Device for Damping Oscillations

Mustafa¹,

Magaji²

2009

American J. of Engineering and Applied Sciences

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Problem statement: Static Var Compensators (SVC) devices are used to improve voltage and reactive power conditions in AC systems. An additional task of SVC is to increase transmission capacity as result of power oscillation damping. The effectiveness of this controller depends on its optimal location and proper signal selection in the power system network. A residue factor had been proposed to find the optimal location of the SVC controllers to damp out the inter-area mode of oscillations. Approach: The proposed residue factor was based on the relative participation of the parameters of SVC controller to the critical mode. A simple approach of computing the residue factor had been proposed, which combined the linearized differential algebraic equation model of the power system and the SVC output equations. Input-output controllability analyses were used to assess the most appropriate input signals (stabilizing signal) for SVC device. Results: The placements of SVC controller had been obtained for the base case as well as for the critical contingency cases. Conclusion:The effectiveness of the proposed method was demonstrated on 25 bus of south Malaysian power system.

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Section: Selection Of Feedback Signals For Svc Devicementioning

confidence: 99%

Optimal Location of Static Var Compensator Device for Damping Oscillations

Mustafa¹,

Magaji²

2009

American J. of Engineering and Applied Sciences

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“…There are several kinds of contingency screening criteria in power industry, such as those used in transient stability analysis (TSA) [13], voltage stability analysis (VSA) [14] and small signal stability analysis (SSSA) [15,16]. Screening of critical contingencies is usually achieved by ranking contingencies according to a severity index defined in these fields.…”

Section: Critical Contingency Screeningmentioning

confidence: 99%

“…The on-going power industry deregulation introduces a great deal of changes to the ways power system operates and thus it is necessary to investigate the power system damping over a wide range of operating conditions. It is widely recognized that in some power systems a generation redispatch or rescheduling may be necessary when some contingency like generator outage happens [16]. In this study, it is assumed that no contingency would cause a system rescheduling.…”

Section: Critical Contingency Screeningmentioning

confidence: 99%

“…The system under cer- tain operating condition is small-signal secure if ≥ T , where the stability threshold T is determined based on operating experience and normally system dependent [1]. In this paper, the stability index is employed to screen contingencies because its value can reflect the performance of post-contingency system conditions [15,16]. The lower is the value of the stability index, the weaker is the damping effect in the power system and hence the system is more prone to the small signal stability problem.…”

Section: Critical Contingency Screeningmentioning

confidence: 99%

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Systematic approach to consider system contingencies in PSS design

Wang

Chung

Wong

2009

Electric Power Systems Research

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“…In [9][10][11], the optimal power flow with transient stability constraints was studied to get a power dispatch scheme. In [12], a generation rescheduling method was proposed to improve power transfer capability constrained by small-signal stability.…”

Section: Introductionmentioning

confidence: 99%

Optimal Active Power Dispatch with Small-signal Stability Constraints

Xing

Chen

2010

Electric Power Components and Systems

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Conventional optimal active power dispatch without considering smallsignal stability constraints may violate the small-signal stability requirement. This article investigates the optimal active power dispatch problem with small-signal stability constraints. A new optimal active power dispatch model with small-signal stability constraints is built in order to ensure the generation optimization result that can satisfy the given small-signal stability requirement. The successive linear programming method is used to solve the new model. The proposed methodology is validated by two test systems.

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Generation Rescheduling Methods to Improve Power Transfer Capability Constrained by Small-Signal Stability

Cited by 144 publications

References 9 publications

Optimal Location of Static Var Compensator Device for Damping Oscillations

Optimal Location of Static Var Compensator Device for Damping Oscillations

Systematic approach to consider system contingencies in PSS design

Optimal Active Power Dispatch with Small-signal Stability Constraints

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