### Abstract

Modern literature on power system harmonic problems, analysis, and solution is mostly of the case history type [1]. When the harmonic signal strength is low, the assumption of sinusoidal bus voltages is usually made, thereby simplifying analysis considerably. Since interest is often restricted to distribution circuits, simple radial circuit configuration is frequently assumed, and band (frequency) limitation of harmonics is also assumed. The proliferation of rectifier and other nonlinear loads, however, particularly in localized regions, suggests a renewed look at harmonic signals, especially at high harmonic content, near resonance, and cases of considerable bus voltage distortion. Xia and Heydt [2–3] have modified the Newton-Raphson power flow study algorithm to accommodate nonlinear loads without the assumption of superposition, radial circuitry, or sinusoidal bus voltage. Grady [7] has extended the Xia-Heydt algorithm to include nonlinear resistive loads (e.g. fluorescent lamps) and zero sequence signals.

Original language | English (US) |
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Pages (from-to) | 57-58 |

Number of pages | 2 |

Journal | IEEE Power Engineering Review |

Volume | PER-4 |

Issue number | 9 |

DOIs | |

State | Published - 1984 |

Externally published | Yes |

### ASJC Scopus subject areas

- Electrical and Electronic Engineering

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## Cite this

*IEEE Power Engineering Review*,

*PER-4*(9), 57-58. https://doi.org/10.1109/MPER.1984.5525824