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RISS 인기검색어
- 검색키워드
- 저자 : Kusum Verma (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
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Verma, Kusum,Niazi, K.R. The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.2
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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Kusum Verma,K. R. Niazi 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.2
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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Preventive and Emergency Control of Power System for Transient Stability Enhancement
Shahbaz A. Siddiqui,Kusum Verma,K. R. Niazi,Manoj Fozdar 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.1
This paper presents preventive and emergency control measures for on line transient stability (security) enhancement. For insecure operating state, generation rescheduling based on a real power generation shift factor (RPGSF) is proposed as a preventive control measure to bring the system back to secure operating state. For emergency operating state, two emergency control strategies namely generator shedding and load shedding have been developed. The proposed emergency control strategies are based on voltage magnitudes and rotor trajectories data available through Phasor Measurement Units (PMUs) installed in the systems. The effectiveness of the proposed approach has been investigated on IEEE-39 bus test system under different contingency and fault conditions and application results are presented.
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Preventive and Emergency Control of Power System for Transient Stability Enhancement
Siddiqui, Shahbaz A.,Verma, Kusum,Niazi, K.R.,Fozdar, Manoj The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.1
This paper presents preventive and emergency control measures for on line transient stability (security) enhancement. For insecure operating state, generation rescheduling based on a real power generation shift factor (RPGSF) is proposed as a preventive control measure to bring the system back to secure operating state. For emergency operating state, two emergency control strategies namely generator shedding and load shedding have been developed. The proposed emergency control strategies are based on voltage magnitudes and rotor trajectories data available through Phasor Measurement Units (PMUs) installed in the systems. The effectiveness of the proposed approach has been investigated on IEEE-39 bus test system under different contingency and fault conditions and application results are presented.
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New Data Driven Scheme for Real-Time Power System Transient Stability Assessment
Shrivastava Divya Rishi,Siddiqui Shahbaz A.,Verma Kusum 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.3
A computational efficient and precise approach for real-time power system transient stability assessment (TSA), with post disturbance synchronized data is proposed in this paper. An empirical wavelet transform (EWT), Teager Kaiser energy changes (TKE) and Random Forest (RF) based new scheme is proposed to assess TSA. Based on the generator bus frequency and angles, a novel Robust Transient Stability Index (RTSI) is proposed to capture real-time status of power network. The EWT is utilized to decompose the proposed multi-component index into various intrinsic mode functions (modes). Subsequently, instantaneous energy change within each mode is calculated using Teager–Kaiser energy operator (TKEO). The energy changes in each mode defines decision boundary between transient stable and unstable operating scenario. Finally, for each mode, standard deviation of these energy changes is obtained to measure the variations in energy change about mean value. The Random Forest classification scheme is developed to obtain the TSA in real-time. The developed classifier predicts TSA using standard deviation of these energy changes. Simulation results and comparison with relevance minimum redundancy arithmetic, deep imbalanced learning framework and improved support vector machine methods demonstrates capability of the proposed scheme.
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