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Applying protection principles for controlling distributed generation

Journal Article


Abstract


  • In a distribution system, it is essential to maintain the voltage variation within

    a specified limit for satisfactory operation of connected customers’ equipment. Normally, this

    goal is achieved by controlling the operation of compensating devices, such as load tap changing

    transformers, shunt capacitors, series capacitors, shunt reactors and static VAr compensators.

    However, technical and regulatory developments are encouraging a greater number of small

    generator units, known as distributed generation (DG), and this has the potential to significantly

    affect voltage control systems. This paper presents an adaptive voltage control technique that

    incorporates DG systems into the voltage control system. The control scheme uses on-load tap

    changing transformer (OLTC) and DG for voltage corrections, both are driven by advanced line

    drop compensators (LDC). At the substation, the LDC is employed to control step-up or step-down

    decisions of the OLTC, while another LDC will be used at the DG connection point to set DG

    parameters. Also, for a more cost-effective system, voltage control action coordination is proposed

    using magnitude and time grading. The control approach is tested on a modified distribution system

    with load variations that are stochastic in time and location. The results show that the integration of

    these magnitude and time grading protection principles have considerably reduced the DG energy

    required to achieve the desired control.

UOW Authors


  •   Le, An D. T. (external author)
  •   Muttaqi, Kashem
  •   Negnevitsky, Michael (external author)
  •   Ledwich, Gerard F. (external author)

Publication Date


  • 2008

Citation


  • A. D. T. Le, K. M. Muttaqi , M. Negnevitsky & G. Ledwich, "Applying protection principles for controlling distributed generation," Australian Journal of Electrical and Electronics Engineering, vol. 4, (3) pp. 249-258, 2008.

Scopus Eid


  • 2-s2.0-47349088930

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2399

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 249

End Page


  • 258

Volume


  • 4

Issue


  • 3

Place Of Publication


  • Australia

Abstract


  • In a distribution system, it is essential to maintain the voltage variation within

    a specified limit for satisfactory operation of connected customers’ equipment. Normally, this

    goal is achieved by controlling the operation of compensating devices, such as load tap changing

    transformers, shunt capacitors, series capacitors, shunt reactors and static VAr compensators.

    However, technical and regulatory developments are encouraging a greater number of small

    generator units, known as distributed generation (DG), and this has the potential to significantly

    affect voltage control systems. This paper presents an adaptive voltage control technique that

    incorporates DG systems into the voltage control system. The control scheme uses on-load tap

    changing transformer (OLTC) and DG for voltage corrections, both are driven by advanced line

    drop compensators (LDC). At the substation, the LDC is employed to control step-up or step-down

    decisions of the OLTC, while another LDC will be used at the DG connection point to set DG

    parameters. Also, for a more cost-effective system, voltage control action coordination is proposed

    using magnitude and time grading. The control approach is tested on a modified distribution system

    with load variations that are stochastic in time and location. The results show that the integration of

    these magnitude and time grading protection principles have considerably reduced the DG energy

    required to achieve the desired control.

UOW Authors


  •   Le, An D. T. (external author)
  •   Muttaqi, Kashem
  •   Negnevitsky, Michael (external author)
  •   Ledwich, Gerard F. (external author)

Publication Date


  • 2008

Citation


  • A. D. T. Le, K. M. Muttaqi , M. Negnevitsky & G. Ledwich, "Applying protection principles for controlling distributed generation," Australian Journal of Electrical and Electronics Engineering, vol. 4, (3) pp. 249-258, 2008.

Scopus Eid


  • 2-s2.0-47349088930

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2399

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 249

End Page


  • 258

Volume


  • 4

Issue


  • 3

Place Of Publication


  • Australia