Multi-Objective Dynamic VAR Planning Against Short-Term Voltage Instability Using a Decomposition-Based Evolutionary Algorithm

Short-term voltage stability is an increasing concern in today's power systems due to the growing penetration of induction motors. This paper proposes a systematic method for optimal placement of dynamic VAR support against short-term voltage instability. The problem is formulated as a multi-ob...

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Veröffentlicht in:IEEE transactions on power systems Jg. 29; H. 6; S. 2813 - 2822
Hauptverfasser: Xu, Yan, Dong, Zhao Yang, Meng, Ke, Yao, Wei Feng, Zhang, Rui, Wong, Kit Po
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.11.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Automatic voltage control
Dynamic VAR support
Evolutionary computation
Load modeling
Motors
multi-objective optimization
Optimization
Pareto optimality
Power system dynamics
Power system stability
Reactive power
reactive power planning
short-term voltage stability
Stability criteria
STATCOM
ISSN:0885-8950, 1558-0679
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Zusammenfassung:Short-term voltage stability is an increasing concern in today's power systems due to the growing penetration of induction motors. This paper proposes a systematic method for optimal placement of dynamic VAR support against short-term voltage instability. The problem is formulated as a multi-objective optimization model minimizing two conflicting objectives: 1) the total investment cost and 2) the expected unacceptable short-term voltage performance subject to a set of probable contingencies. STATCOM is employed for its stronger dynamic VAR support capability. Indices for quantifying the short-term voltage stability and the related risk level are proposed for problem modeling. Candidate buses are selected based on the concept of trajectory sensitivity. Load dynamics are fully considered using a composite load model containing induction motor and other typical components. A relatively new and superior multi-objective evolutionary algorithm called MOEA/D is introduced and employed to find the Pareto optimal solutions of the model. The proposed method is verified on the New England 39-bus system using industry-grade models and simulation tool.
Bibliographie:ObjectType-Article-1
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ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2014.2310733