### Abstract

This paper describes two fundamental signatures of shunt capacitor bank switching transient phenomena from which one can accurately determine the relative location of an energized capacitor bank whether it is upstream or downstream from the monitoring location. Mathematical analysis of a capacitor bank energizing proves that: 1) the energized capacitor bank affects only the upstream reactive power flow and 2) at the energizing instant, the gradients (time derivatives) of voltage and current waveforms measured upstream from the capacitor location will have opposite signs. The reverse is true in that at the energizing instant, gradients of voltage and current waveforms measured downstream from the same capacitor location will have equal signs. Thus, we can precisely determine the relative location of the switched capacitor bank by simply evaluating power factor changes and the signs of voltage and current waveform gradients at the switching instant. The efficacy of our practical direction-finding technique is demonstrated analytically and by way of time-domain simulation models and actual data.

Original language | English |
---|---|

Pages (from-to) | 1105-1112 |

Number of pages | 8 |

Journal | IEEE Transactions on Power Delivery |

Volume | 23 |

Issue number | 2 |

DOIs | |

Publication status | Published - 2008 Apr 1 |

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### All Science Journal Classification (ASJC) codes

- Electrical and Electronic Engineering

### Cite this

*IEEE Transactions on Power Delivery*,

*23*(2), 1105-1112. https://doi.org/10.1109/TPWRD.2008.917669

}

*IEEE Transactions on Power Delivery*, vol. 23, no. 2, pp. 1105-1112. https://doi.org/10.1109/TPWRD.2008.917669

**On two fundamental signatures for determining the relative location of switched capacitor banks.** / Hur, Kyeon; Santoso, Surya.

Research output: Contribution to journal › Article

TY - JOUR

T1 - On two fundamental signatures for determining the relative location of switched capacitor banks

AU - Hur, Kyeon

AU - Santoso, Surya

PY - 2008/4/1

Y1 - 2008/4/1

N2 - This paper describes two fundamental signatures of shunt capacitor bank switching transient phenomena from which one can accurately determine the relative location of an energized capacitor bank whether it is upstream or downstream from the monitoring location. Mathematical analysis of a capacitor bank energizing proves that: 1) the energized capacitor bank affects only the upstream reactive power flow and 2) at the energizing instant, the gradients (time derivatives) of voltage and current waveforms measured upstream from the capacitor location will have opposite signs. The reverse is true in that at the energizing instant, gradients of voltage and current waveforms measured downstream from the same capacitor location will have equal signs. Thus, we can precisely determine the relative location of the switched capacitor bank by simply evaluating power factor changes and the signs of voltage and current waveform gradients at the switching instant. The efficacy of our practical direction-finding technique is demonstrated analytically and by way of time-domain simulation models and actual data.

AB - This paper describes two fundamental signatures of shunt capacitor bank switching transient phenomena from which one can accurately determine the relative location of an energized capacitor bank whether it is upstream or downstream from the monitoring location. Mathematical analysis of a capacitor bank energizing proves that: 1) the energized capacitor bank affects only the upstream reactive power flow and 2) at the energizing instant, the gradients (time derivatives) of voltage and current waveforms measured upstream from the capacitor location will have opposite signs. The reverse is true in that at the energizing instant, gradients of voltage and current waveforms measured downstream from the same capacitor location will have equal signs. Thus, we can precisely determine the relative location of the switched capacitor bank by simply evaluating power factor changes and the signs of voltage and current waveform gradients at the switching instant. The efficacy of our practical direction-finding technique is demonstrated analytically and by way of time-domain simulation models and actual data.

UR - http://www.scopus.com/inward/record.url?scp=42249084043&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42249084043&partnerID=8YFLogxK

U2 - 10.1109/TPWRD.2008.917669

DO - 10.1109/TPWRD.2008.917669

M3 - Article

AN - SCOPUS:42249084043

VL - 23

SP - 1105

EP - 1112

JO - IEEE Transactions on Power Delivery

JF - IEEE Transactions on Power Delivery

SN - 0885-8977

IS - 2

ER -