A rule-based approach to decentralized voltage control

Wagner, William R.; Keyhani, A.; Hao, Shangyou; Wong, Tze-Shyan

doi:10.1109/59.54576

Cited by 30 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IEEE Standard 1709™-2010 uses the voltage tolerance standard in IEC 60092-101, and specifies steady-state (i.e., continuous) DC voltage tolerance limits of 10% [26]. Therefore, voltage deviations due to small variations in the real bus power can be expected to be smaller than the bus voltage, and Equation (17) can be approximated to Equation (19) via the assumption shown in Equation (18). 2 2 ( )…”

Section: Formulation Of An Approximate Expression For Voltage Sensitimentioning

confidence: 99%

“…Such a relationship, expressed as the voltage sensitivity, provides a linear relation between voltage deviations and electrical quantities. The voltage-reactive power (V-Q) sensitivity is generally used for steady-state analyses of AC power systems, and V-Q sensitivity is often used in planning, operation, assessment, and control of power systems [10][11][12][13][14][15][16][17][18][19][20]. Moreover, voltage sensitivity can be utilized in medium-or low-voltage distribution networks with high penetrations of DERs, which underlines the importance of optimal control in a distribution network.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Formulation and Analysis of an Approximate Expression for Voltage Sensitivity in Radial DC Distribution Systems

et al. 2015

View full text Add to dashboard Cite

Abstract:Voltage is an important variable that reflects system conditions in DC distribution systems and affects many characteristics of a system. In a DC distribution system, there is a close relationship between the real power and the voltage magnitude, and this is one of major differences from the characteristics of AC distribution systems. One such relationship is expressed as the voltage sensitivity, and an understanding of voltage sensitivity is very useful to describe DC distribution systems. In this paper, a formulation for a novel approximate expression for the voltage sensitivity in a radial DC distribution system is presented. The approximate expression is derived from the power flow equation with some additional assumptions. The results of approximate expression is compared with an exact calculation, and relations between the voltage sensitivity and electrical quantities are analyzed analytically using both the exact form and the approximate voltage sensitivity equation.

show abstract

Section: Formulation Of An Approximate Expression For Voltage Sensitimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Formulation and Analysis of an Approximate Expression for Voltage Sensitivity in Radial DC Distribution Systems

et al. 2015

View full text Add to dashboard Cite

show abstract

“…As the vo ltage profile of the electric power system coul d be constantly systems [35] etc. In this chapter, a vo ltage-reactive powe r co ntro l model using fuzzy sets is described which aims at the enhancement of voltage security.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy-expert system for voltage stability monitoring and control

Nageswararao

Jeyasurya

1998

Electric Power Systems Research

View full text Add to dashboard Cite

and critical bus that participate in the instab ility and tJlerd)y el iminate the problems assoc iated with traditional methods. Hence. modal anal ysis techni que is not only used as a benchmark 100 1 for the development of the proposed fuzzy.expert system. but also as aD important tool for validatin g its accuracy.To understand this new approach. fundamental. conceptS of fuzzy logic basedon the theory o f appro ximate reasoni ng is dealt in detai l. To get further insight into this alterna te approa ch. a simple method using fuzzysets for the voltage-reacti ve power co ntro l to im prove the system vo ltage level is presen ted A modi fied IEEE 30 bus system is used as an exam ple to illustra te this method. Simulation results of this simple problem is encouragin g and has been a useful starti ng point for the proposed fuzzy-expc:n system for voltage stabili ty eval uation.The proposed fuuy-expm system consists of two main components . The system is taken as a case sIUdy to illustrate the proposed procedure. The expert system output is compared with the simulation results of a commerc ially available software ( VSTAB 4.1) output through modal analysis. The proposed system is fast and more efficient than conventional voltage stability methods.iii

show abstract