access icon openaccess Identification of voltage stability condition of a power system using measurements of bus variables

Several online methods were proposed for investigating the voltage stability condition of an interconnected power system using the measurements of voltage and current phasors at a bus. For this purpose, phasor measurement units (PMUs) are used. A PMU is a device which measures the electrical waves on an electrical network, using a common time source (reference bus) for synchronisation. This study proposes a method for online monitoring of voltage stability condition of a power system using measurements of bus variables namely – (i) real power, (ii) reactive power and (iii) bus voltage magnitude at a bus. The measurements of real power, reactive power and bus voltage magnitude could be extracted/captured from a smart energy meter. The financial involvement for implementation of the proposed method would significantly lower compared with the PMU-based method.

Inspec keywords: reactive power; synchronisation; phasor measurement; smart meters; power system interconnection; power system stability

Other keywords: voltage stability condition identification; bus voltage magnitude; power system; electrical network; current phasors measurements; bus variables measurements; voltage phasors measurements; phasor measurement units; online methods; smart energy meter; PMU-based method; electrical waves; PMU; bus variables; reactive power; interconnected power system; synchronisation; voltage stability condition; online monitoring

Subjects: Power system measurement and metering

References

    1. 1)
      • 10. Fu, L., Pal, B.C., Cory, B.J.: ‘Phasor measurement application for power system voltage stability monitoring’. General Meeting of the IEEE Power and Energy Society, IEEEE, pp. 49534960.
    2. 2)
      • 6. Sandro, C., Taranto, G.N.: ‘A real-time voltage instability identification algorithm based on local phasor measurements’, IEEE Trans. Power Syst., 2008, 23, (3), pp. 12711279.
    3. 3)
      • 1. Hazarika, D., Talukdar, B.K., Das, R.: ‘Use of local bus measurements for operational planning of a power system’, IET Gener. Transm. Distrib., 2013, 7, (11), pp. 12961309.
    4. 4)
      • 2. Vu, K., Begovic, M.M., Novosel, D., Saha, M.M.: ‘Use of local measurements to estimate voltage stability margin’, IEEE Trans. Power Syst., 1999, 14, (3), pp. 10291035.
    5. 5)
      • 5. Haque, M.H.: ‘On-line monitoring of maximum permissible loading of a power system within voltage stability limits’, IEE Proc., Gener. Transm. Distrib., 2003, 150, (1), pp. 109112.
    6. 6)
      • 9. Diao, R., Sun, K., Vittal, V., et al: ‘Decision tree based on-line voltage security assessment using PMU measurements’, IEEE Trans. Power Syst., 2009, 24, (2), pp. 832839.
    7. 7)
      • 3. Smon, I., Verbic, G., Gubina, F.: ‘Local voltage-stability index using Tellegen's theorem’, IEEE Trans. Power Syst., 2006, 21, (3), pp. 12671275.
    8. 8)
      • 7. Glavic, M., Cutsem, T.V.: ‘Wide-area detection of voltage instability from synchronized phasor measurements. Part I: principle’, IEEE Trans. Power Syst., 2009, 24, (3), pp. 14081416.
    9. 9)
      • 8. Glavic, M., Cutsem, T.V.: ‘Wide-area detection of voltage instability from synchronized phasor measurements. Part ii: simulation results’, IEEE Trans. Power Syst., 2009, 24, (3), pp. 14171425.
    10. 10)
      • 4. Wang, Y., Li, W., Lu, J.: ‘A new node voltage stability index based on local voltage phasors’, Electr. Power Syst. Res., 2009, 79, pp. 265271.
http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2014.0263
Loading

Related content

content/journals/10.1049/joe.2014.0263
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading