Maximizing restorable load amount for specific substation during system restoration

► A mathematical model for calculating the maximum restorable load is presented. ► Transient voltage-dip constraint is analyzed in detail by a fast estimation. ► The ASF model is adopted to calculate the frequency deviation. ► Cold load pickup characteristics are addressed according to a simple guid...

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Veröffentlicht in:International journal of electrical power & energy systems Jg. 43; H. 1; S. 1213 - 1220
Hauptverfasser: Qu, Hanbing, Liu, Yutian
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Oxford Elsevier Ltd 01.12.2012
Elsevier
Schlagworte:
Applied sciences
Average system frequency model
Bisection algorithm
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Load restoration
Miscellaneous
Power networks and lines
Power system restoration
Substations
Transient voltage-dip constraint
Bisection algorithm
Load restoration
Power system restoration
Transient voltage-dip constraint
Average system frequency model
Performance evaluation
Substation
Electric stress
Critical parameter
Power system stability
Algorithm
Steady state
Bus system
Case study
Electrical network
Voltage stability
Voltage dip
IEEE standards
Effectiveness factor
Mathematical model
Electric fault
ISSN:0142-0615, 1879-3517
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung:► A mathematical model for calculating the maximum restorable load is presented. ► Transient voltage-dip constraint is analyzed in detail by a fast estimation. ► The ASF model is adopted to calculate the frequency deviation. ► Cold load pickup characteristics are addressed according to a simple guideline. ► A modified bisection method is proposed to solve the complex problem. During power system restoration, the maximum load amount that a substation can pick up at one time is a critical parameter to be determined. Many factors should be considered, such as frequency constraint, transient voltage-dip constraint, steady-state voltage constraint and cold load pickup. This paper proposes a mathematical model for calculating the maximum restorable load amount, in which proper checking methods are presented to deal with these constraints. Frequency deviation is calculated by the average system frequency model. The transient voltage-dip constraint is dealt with by a fast estimation. Cold load pickup characteristics are addressed according to a simple guideline. And a modified bisection algorithm is proposed to solve the complex problem efficiently. The effectiveness is demonstrated by case studies performed on the IEEE 14-bus system and a practical power system.
ISSN:0142-0615
1879-3517
DOI:10.1016/j.ijepes.2012.05.049