Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

access icon openaccess Analysis on characteristic of DC short-circuit fault in multi-terminal AC/DC hybrid distribution network

This is an open access article published by the IET under the Creative Commons Attribution -NonCommercial License (http://creativecommons.org/licenses/by-nc/3.0/)
Received 21/08/2018, Accepted 17/09/2018, Published 01/10/2018

The AC/DC hybrid distribution network takes advantage of both AC and DC technologies. It is one of the most important forms of future distribution systems. However, currently few work has been done on the topology determination of this network, and its fault behaviour of DC short-circuit fault has not been clearly investigated yet. First, the tree, radial, and ring topologies of a three-terminal AC/DC distribution network are compared. Also the characteristics of fault currents in DC circuit breakers during a DC short-circuit fault are analysed in detail. Then the equivalent circuit models during the fault are established and accurate mathematical expressions of transient fault currents are deduced. Based on this, the influence of network topologies on the characteristics of fault currents is investigated thoroughly. Moreover, a method to determine the peak values and peak times of fault currents is presented which can simplify the selection of circuit components. The simulation results show that the fault currents of the radial topology have the lowest peak values and longest peak times, and the proposed method meets the requirements of both simplicity and accuracy. Finally, the influence of the key parameters on the proposed method is investigated comprehensively.

Inspec keywords: short-circuit currents; equivalent circuits; circuit breakers; power distribution protection; fault currents; power distribution faults

Other keywords: AC technologies; transient fault currents; three-terminal AC-DC distribution network; DC circuit breakers; DC technologies; DC short-circuit fault characteristic analysis; multiterminal AC-DC hybrid distribution network; ring topologies; topology determination; network topologies; mathematical expressions; equivalent circuit models; radial topologies; tree topologies

Subjects: Distribution networks; Switchgear; Power system protection

References

    1. 1)
      • 3. Bucher, M.K., Franck, C.M.: ‘Analytic approximation of fault current contribution from AC networks to MTDC networks during pole-to-ground faults’, IEEE Trans. Power Deliv., 2016, 31, (1), pp. 20–27.
    2. 2)
      • 6. Dragičević, T., Lu, X., Vasquez, J.C., et al: ‘DC microgrids – part II: a review of power architectures, applications and standardization issues’, IEEE Trans. Power Electron., 2016, 31, (5), pp. 3528–3549.
    3. 3)
      • 7. Jovcic, D., Taherbaneh, M., Taisne, J.P., et al: ‘Topology assessment for 3 + 3 terminal offshore DC grid considering DC fault management’, IET Gener. Transm. Distrib., 2015, 9, (3), pp. 221–230.
    4. 4)
      • 13. Li, R., Xu, L., Holliday, D., et al: ‘Continuous operation of radial multiterminal HVDC systems under DC fault’, IEEE Trans. Power Deliv., 2016, 31, (1), pp. 351–361.
    5. 5)
      • 5. Unamuno, E., Barrena, J.A.: ‘Hybrid AC/DC microgrids – part II: review and classification of control strategies’, Renew. Sustain. Energy Rev., 2015, 52, pp. 1123–1134.
    6. 6)
      • 1. Boroyevich, D., Cvetković, I., Dong, D., et al: ‘Future electronic power distribution systems a contemplative view’. Int. Conf. Optimization of Electrical and Electronic Equipment, Basov, Romania, 2010, pp. 1369–1380.
    7. 7)
      • 8. Bucher, M.K., Franck, C.M.: ‘Fault current interruption in multiterminal HVDC networks’, IEEE Trans. Power Deliv., 2016, 31, (1), pp. 87–95.
    8. 8)
      • 9. Li, R., Xu, L., Yao, L., et al: ‘Active control of DC fault currents in DC solid-state transformers during ride-through operation of multi-terminal HVDC systems’, IEEE Trans. Energy Convers., 2016, 31, (4), pp. 1336–1346.
    9. 9)
      • 4. Bucher, M.K., Franck, C.M.: ‘Analytic approximation of fault current contributions from capacitive components in HVDC cable networks’, IEEE Trans. Power Deliv., 2015, 30, (1), pp. 74–81.
    10. 10)
      • 12. Wang, M., Beerten, J., Hertem, D.V.: ‘Frequency domain based DC fault analysis for bipolar HVDC grids’, J. Mod. Power Syst. Clean Energy, 2017, 5, (4), pp. 1–12.
    11. 11)
      • 2. Yang, J., Fletcher, J.E., O'Reilly, J.: ‘Short-circuit and ground fault analyses and location in VSC-based DC network cables’, IEEE Trans. Ind. Electron., 2012, 59, (10), pp. 3827–3837.
    12. 12)
      • 11. Skok, S., Marusic, A., Tesnjak, S.: ‘Transient short-circuit currents in auxiliary DC installations in power plants and substations’. Power Tech Conf. Proc., Bologna, 2003.
    13. 13)
      • 10. Kontos, E., Pinto, R.T., Rodrigues, S., et al: ‘Impact of HVDC transmission system topology on multiterminal DC network faults’, IEEE Trans. Power Deliv., 2015, 30, (2), pp. 844–852.
http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2018.8368
Loading

Related content

content/journals/10.1049/joe.2018.8368
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
Print this page
This is a required field
Please enter a valid email address