A coherency based generator rescheduling for preventive control of transient stability in power systems

Verma, Kusum; Niazi, K. R.

doi:10.1016/j.ijepes.2012.08.072

Cited by 33 publications

(17 citation statements)

References 18 publications

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“…On the other hand if all rotor angles remain bounded within limit around their post disturbance steady state values, then the system is called stable system. The dynamic behavior of an n-generator power system can be described using the following swing equations ( [2,8]):…”

Section: Power System Swing Equationmentioning

confidence: 99%

“…In this paper, an angle based stability index RTI ( [6][7][8]), is used in order to assess the severity of a contingency and the system's trajectory following a disturbance, defined as…”

Section: Rotor Trajectory Index (Rti)mentioning

confidence: 99%

“…Various generator rescheduling techniques [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] have been proposed for transient security control. In [6], the transient energy function (TEF) method is used to check the dynamic security of the system and the coherent behavior of generators is used to find a new generation configuration.…”

Section: Introductionmentioning

confidence: 99%

“…In [7], a coherency based sensitivity method is proposed for generation rescheduling. In [8], a coherency based generator rescheduling for preventive control of transient stability in power systems is proposed. In [9], dynamic security assessment and generation rescheduling method utilizing genetic algorithms (GAs) integrated with probabilistic neural networks (PNNs) and adaptive neurofuzzy inference systems (ANFISs) is proposed for the preventive control power systems against transient instabilities.…”

Section: Introductionmentioning

confidence: 99%

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Preventive Control for Transient Security with Generation Rescheduling Based on Rotor Trajectory Index

Verma¹,

Niazi²

2015

Journal of Electrical Engineering and Technology

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-The increasing need to improve transient security assessment of existing or forecasted operating conditions of networks by power system operators is major concern of the power system security monitoring problem at the Energy Management Systems. This paper proposes a preventive control of transient stability with generation rescheduling based on rotor trajectory index obtained using time domain simulations. This index may help power engineers in making operational decision and to obtain a generation configuration with better transient security dispatch. The effectiveness of the proposed methodology is demonstrated on IEEE 39-bus New England system for a three phase fault at different loading conditions with single and multiple line outage cases.

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Section: Power System Swing Equationmentioning

confidence: 99%

“…In this paper, an angle based stability index RTI ( [6][7][8]), is used in order to assess the severity of a contingency and the system's trajectory following a disturbance, defined as…”

Section: Rotor Trajectory Index (Rti)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preventive Control for Transient Security with Generation Rescheduling Based on Rotor Trajectory Index

Verma¹,

Niazi²

2015

Journal of Electrical Engineering and Technology

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“…Transient stability constrained-optimal power flow (TSC-OPF) techniques include an economic objective and static and dynamic constraints in the same optimisation problem [1][2][3]. Therefore TSC-OPF is an adequate tool for creating a transparent mechanism for calculating optimal economic operation when the system is restricted by steady-state and stability constraints.…”

Section: Introductionmentioning

confidence: 99%

Advanced application of transient stability constrained‐optimal power flow to a transmission system including an HVDC‐LCC link

Calle¹,

Ledesma

Castronuovo

2015

IET Generation, Transmission & Distribution

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

Siddiqui

Verma

Niazi

et al. 2015

Int. Trans. Electr. Energ. Syst.

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SUMMARYIn this paper, a unified approach for transient stability enhancement following large disturbance is proposed through preventive or/and emergency control measures. Transient stability-constrained generation rescheduling is proposed as a preventive control strategy with participation of only few generators on the basis of the rotor angle swings. However, if generator rescheduling fails to regain the transient stability of the power system, heuristic real-time transient stability assessment scheme is proposed through synchrophasor measurements. If the system is predicted to be unstable in real-time, emergency control actions like generator tripping and load shedding are proposed with information about their initiation, location, type, and the magnitude. These emergency actions are purely based on the voltage magnitudes and phase angles obtained through phasor measurement units in real-time. The effectiveness of the proposed scheme is demonstrated on IEEE-39 New England test system, and the results obtained are promising.

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A coherency based generator rescheduling for preventive control of transient stability in power systems

Cited by 33 publications

References 18 publications

Preventive Control for Transient Security with Generation Rescheduling Based on Rotor Trajectory Index

Preventive Control for Transient Security with Generation Rescheduling Based on Rotor Trajectory Index

Advanced application of transient stability constrained‐optimal power flow to a transmission system including an HVDC‐LCC link

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

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