Details
| Original language | English |
|---|---|
| Article number | 106556 |
| Journal | Electric power systems research |
| Volume | 189 |
| Early online date | 10 Aug 2020 |
| Publication status | Published - Dec 2020 |
Abstract
In this paper a unified fault matrix method for the calculation of shunt and series faults in power systems is presented which exhibits a complete duality between shunt faults (ShF) and series faults (SrF). In particular, the duality between line-to-line short circuits and interruptions of electric equipment with isolated neutral and the corresponding fault matrices is worked out. For all ShF and SrF the same grid equation building algorithm is used. The order of the branch equations of the electrical equipment as well as the order of the grid equation system are not changed. The voltages of the interruptions and the neutral point voltages can easily be calculated. Fault impedances resp. admittances identical to zero (ideal short circuits and interruptions) can be used without the emergence of numerical problems as in conventional methods.
Keywords
- Fault studies, Interruptions, Power system modelling, Series faults, Short circuits, Shunt faults, Unified matrix method
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
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In: Electric power systems research, Vol. 189, 106556, 12.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Unified fault matrix method for the calculation of shunt and series faults in power systems with complete duality of shunt and series fault matrices
AU - Hofmann, Lutz
PY - 2020/12
Y1 - 2020/12
N2 - In this paper a unified fault matrix method for the calculation of shunt and series faults in power systems is presented which exhibits a complete duality between shunt faults (ShF) and series faults (SrF). In particular, the duality between line-to-line short circuits and interruptions of electric equipment with isolated neutral and the corresponding fault matrices is worked out. For all ShF and SrF the same grid equation building algorithm is used. The order of the branch equations of the electrical equipment as well as the order of the grid equation system are not changed. The voltages of the interruptions and the neutral point voltages can easily be calculated. Fault impedances resp. admittances identical to zero (ideal short circuits and interruptions) can be used without the emergence of numerical problems as in conventional methods.
AB - In this paper a unified fault matrix method for the calculation of shunt and series faults in power systems is presented which exhibits a complete duality between shunt faults (ShF) and series faults (SrF). In particular, the duality between line-to-line short circuits and interruptions of electric equipment with isolated neutral and the corresponding fault matrices is worked out. For all ShF and SrF the same grid equation building algorithm is used. The order of the branch equations of the electrical equipment as well as the order of the grid equation system are not changed. The voltages of the interruptions and the neutral point voltages can easily be calculated. Fault impedances resp. admittances identical to zero (ideal short circuits and interruptions) can be used without the emergence of numerical problems as in conventional methods.
KW - Fault studies
KW - Interruptions
KW - Power system modelling
KW - Series faults
KW - Short circuits
KW - Shunt faults
KW - Unified matrix method
UR - http://www.scopus.com/inward/record.url?scp=85089193368&partnerID=8YFLogxK
U2 - 10.1016/j.epsr.2020.106556
DO - 10.1016/j.epsr.2020.106556
M3 - Article
AN - SCOPUS:85089193368
VL - 189
JO - Electric power systems research
JF - Electric power systems research
SN - 0378-7796
M1 - 106556
ER -