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

access icon openaccess Calculating for surface electric field of converter valve shield system with fast multipole curved boundary element method

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 24/08/2018, Accepted 19/09/2018, Published 23/10/2018

The accurate and fast calculation of surface electric field of DC converter valve shield system have guiding significance in the designing process. However, the electrostatic field analysis is a large-scale problem with low efficiency using the conventional numerical algorithm. In order to solve this problem, fast multipole curved boundary element method (FMCBEM) was proposed. The FMCBEM is based on the indirect boundary integral equation of electrostatic field. Galerkin curved boundary element method based on coordinate transformation is used to improve the accuracy, then fast multipole method is used to improve the calculation speed and reduce the memory usage. Through simple examples, the accuracy and efficiency of the algorithm were verified. Compared with finite element method, it was found that the accuracy can meet the requirements of engineering. The efficiency was obviously better than the conventional boundary element method. Applying this algorithm, the surface electric fields of different shield systems of ±160 kV converter valve, which the degree of freedoms is more than 220 thousand, were analysed using desktop computer. This algorithm can calculate the large-scale electric field problem fast and accurately, which is an effective tool for the optimisation design.

Inspec keywords: electric fields; finite element analysis; boundary-elements methods; convertors; valves; boundary integral equations; Galerkin method

Other keywords: indirect boundary integral equation; DC converter valve shield system; galerkin curved boundary element method; fast multipole curved boundary element method; surface electric field; fast multipole method; finite element method; conventional boundary element method; electrostatic field analysis; large-scale electric field problem

Subjects: Convertors; Finite element analysis; Finite element analysis; Control of electric power systems

References

    1. 1)
      • 4. Du, Z., Zhu, L., Ruan, J., et al: ‘Surface electric field calculation of fittings inside ±800 kV valve hall using electrostatic field instantaneous load method’, High Volt. Eng., 2014, 40, (6), pp. 1809–1815.
    2. 2)
      • 6. Liu, S., Wei, X., Cao, J., et al: ‘UHVDC converter valve shielding case surface electric field calculation using hybrid-weight-function boundary element method’, Proc. CSEE, 2013, 33, (25), pp. 180–186.
    3. 3)
      • 2. Qiu, Z., Ruan, J., Huang, D., et al: ‘Prediction study on positive DC corona onset voltage of rod-plane air gaps and its application to the design of valve hall fittings’, IET Gener. Transm. Distrib., 2016, 10, (7), pp. 1519–1526.
    4. 4)
      • 13. Qin, X., Zhang, J., Li, G., et al: ‘An element implementation of the boundary face method for 3D potential problems’, Eng. Anal. Bound. Elem., 2010, 34, (11), pp. 934–943.
    5. 5)
      • 8. Yoshida, K.: ‘Applications of fast multipole method to boundary integral equation method’. PhD thesis, Kyoto University, 2001.
    6. 6)
      • 10. Li, Y.: ‘Research on high precision fast BEM and its application in insulator electrical field calculation’. PhD thesis, North China Electric Power University, 2007.
    7. 7)
      • 11. Biedenharn, L. C., Louck, J. D., Carruthers, P. A.: ‘Angular momentum in quantum physics’ (Addison-Wesly Publishing Company, New York, 1981).
    8. 8)
      • 12. Shen, L., Liu, Y.: ‘An adaptive fast multipole boundary element method for three-dimensional potential problems’, Comput. Mech., 2007, 39, (6), pp. 681–691.
    9. 9)
      • 5. Krajewski, W.: ‘Numerical modelling of the electric field in HV substations’, IEE Proc.: Science, Measurement and Technology, 2004, 151, (4), pp. 267–272.
    10. 10)
      • 1. Flourentzou, N., Vassilios, A., Georgios, D.: ‘VSC-based HVDC power transmission systems: an overview’, IEEE Trans. Power Electron., 2009, 24, (3), pp. 592–602.
    11. 11)
      • 14. Hu, F., Nie, Z.: ‘Comparison of iteration solution methods with multilevel fast multipole algorithm for solving large-scale scattering problems’. Proc. of 2009 Asia Pacific Microwave Conf., Singapore, Singapore, Dec 2009, pp. 806–809.
    12. 12)
      • 15. Wang, H., Yao, Z., Wang, P.: ‘On the preconditioners for fast multipole boundary element methods for 2D multi-domain elastostatics’, Eng. Anal. Bound. Elem., 2005, 29, (7), pp. 673–688.
    13. 13)
      • 3. Wang, J., Wu, H., Deng, Z., et al: ‘E-field distribution analysis on three types of converter double valve in 800 kV valve hall’. Proc. of the IEEE Int. Conf. on Properties and Applications of Dielectric Materials, Sydney, Australia, Oct 2015, pp. 692–695.
    14. 14)
      • 9. Buchau, A., Rucker, W.: ‘Preconditioned fast adaptive multipole boundary element method’, IEEE Trans. Magn., 2002, 38, (2), pp. 461–464.
    15. 15)
      • 7. Liu, Y.: ‘Fast multipole boundary element method-theory and applications in engineering’ (Cambridge University Press, New York, 2009).
http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2018.8647
Loading

Related content

content/journals/10.1049/joe.2018.8647
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
Print this page
This is a required field
Please enter a valid email address