Maximum power transfer limited by voltage stability in series and shunt compensated schemes for AC transmission systems

Indulkar, C. S.; Viswanathan, B.; Venkata, S.S.

doi:10.1109/61.25610

Cited by 30 publications

(9 citation statements)

References 4 publications

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“…The boundary line of stability is any condition for which a slight change in the unfavourable direction of any pertinent quality will cause instability. The voltage instability of a system may be due to an avalanche voltage process during a period of the light load with minimum plant generation, and low short-circuits level [15].…”

Section: Vehiclesmentioning

confidence: 99%

Integration of electric vehicles within microgrid

Alkhafaji

Luk

Bati

2016

2016 UKACC 11th International Conference on Control (CONTROL)

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This paper presents an analytical approach to integrate electric vehicles (EVs) into the microgrid in order to enhance its voltage stability. Analytical characterization equations linking the microgrid and the EVs are first developed. Then, based on a practical distribution network and realistic load conditions, case studies are undertaken to show the positive impacts of EV integration. Matpower program is used to formulate and perform the power flow analysis. Eigenvalue, eigenvector and participation factor analysis are used to monitor voltage stability and identify the weakest bus on the system. The results show quantitatively the extent to which the addition of electric vehicles can enhance voltage level and voltage stability of the system under study.

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Section: Vehiclesmentioning

confidence: 99%

Integration of electric vehicles within microgrid

Alkhafaji

Luk

Bati

2016

2016 UKACC 11th International Conference on Control (CONTROL)

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“…By using data obtained from the harmonic power flow, the critical values are calculated for fundamental and harmonic components separately. According to this method, the critical transmission angle (bcritical), critical load voltage (Ucritical) and critical load power (Pcriticd) are derived in Appendix A.2 and given by [2]:…”

Section: Steady-state Voltage Stability Analysis With Harmonic Power mentioning

confidence: 99%

Voltage stability analysis in the power systems including non-linear loads

Uzunoğlu¹,

Kocatepe²,

Yumurtacı³

2004

Euro. Trans. Electr. Power

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Recently, the number of non-linear elements connected to power systems and the non-sinusoidal quantities caused by non-linear loads have been increasing. The influences of the non-sinusoidal quantities on the steady-state voltage stability of power systems have been neglected so far. In this study, a new algorithm presents the effects of the harmonic components caused by non-sinusoidal quantities on voltage stability that are a synthesis of the harmonic power algorithm and the conventional voltage stability analysis. According to this algorithm, the stability analysis was carried out as a numerical application for two different loading conditions in the 1 1-bus electrical power system. In the first case, the system consists of only linear loads, and in the second case it consists of linear and non-linear loads. Finally, the comparison of harmonic power flow based on voltage stability analysis and conventional voltage stability analysis is examined for the above cases. OL 00 h= I h= 1 h= I h= IThen, by using the following equations:the critical transmission angle is obtained as follows:we put Equation (A12) into Equation (A7), we obtain Urcnllev,.] urcntlC., = 2.(ai critical + a~sin&riticai) The critical value at the receiving-end is obtained from Equation (A2), (A7) and (A12) where AUTHORS' BIOGRAPHIES Mehmet Uzunoglu was born in Sinop, Turkey, in 1970. He received the B.Sc. E.E., M.Sc.

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“…The main reason for instability is insufficient condition of the power system corresponding to the demand of reactive power. This drawback may be remedied by use the static VAR compensator including TCR [6]. However, static V AR compensators cause instability in the power system on some operating conditions because of using power electronics to perform static V AR compensation.…”

Section: Figure 1 the Main Elements Of Thyristor Controlled Reactormentioning

confidence: 99%

The Resonance Analysis Caused by Harmonics in Power Systems Including Thyristor Controlled Reactor

Yüksel¹,

Uzunoğlu²,

Kocatepe³

et al. 2003

MCA

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Abstract-The static V AR compensators having fixed capacitor thyristor controlled reactor (FC-TCR) used to improve voltage stability in power systems are nonlinear elements. The fixed capacitor group will produce reactive power while the thyristor controlled reactor will consume reactive power in compensators having FC-TCR. Changing the firing angles of TCR provides the reactive power variation of the system since the reactive power production of capacitors is fixed at a determined voltage level. In some cases, the variation of these firing angles will cause the harmonics in the system. In this study, TCR's are discussed to be harmonic sources and the resonance case caused by harmonics has been investigated with Fourier Matrix Model and MA TLAB Software.

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Maximum power transfer limited by voltage stability in series and shunt compensated schemes for AC transmission systems

Cited by 30 publications

References 4 publications

Integration of electric vehicles within microgrid

Integration of electric vehicles within microgrid

Voltage stability analysis in the power systems including non-linear loads

The Resonance Analysis Caused by Harmonics in Power Systems Including Thyristor Controlled Reactor

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