### Abstract

The P-V Curve, Q-V Curve, or P-Q-V Curve have been widely used to analyze power system behaviors under varying loading conditions. These curves have been generated under the condition that tire constant P-Q load component of a bus (or a collection of buses) varies, with the constant current load and constant impedance load being kept indeed "constant". As such, the physical meaning of these curves can be easily explained. Motivated by the facts that load models have profound impacts on power system behaviors and that the nonlinear load model ZIP-model is popular in modeling nonlinear behaviors of loads, this paper proposes a new class of curves, called ZIP-V curves, to better trace power system steady-state stationary behavior due to load and generation variations. The ZIP-V curves encompass the traditional P-V, Q-V, P-Q-V curves (constant P-Q load), I-V curve (constant current load), Z-V curve (constant impedance load), or generalized curves such as IP-V (constant current and constant power load), ZP-V (constant impedance and constant power load) or IZ-V (constant current and constant impedance load) curve when the values of corresponding components are kept constant. A tool based on the continuation power flow (CPFLOW) method useful for generating the ZIP-V curves is developed and its application to generate ZIP-V curves of a 4561-bus interconnected power system is illustrated.

Original language | English |
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Title of host publication | 1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Conference Proceedings |

Publisher | Institute of Electrical and Electronics Engineers Inc. |

Pages | 647-651 |

Number of pages | 5 |

ISBN (Electronic) | 0780355695, 9780780355699 |

DOIs | |

Publication status | Published - 1999 Jan 1 |

Externally published | Yes |

Event | 1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Edmonton, Canada Duration: 1999 Jul 18 → 1999 Jul 22 |

### Publication series

Name | 1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Conference Proceedings |
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Volume | 2 |

### Other

Other | 1999 IEEE Power Engineering Society Summer Meeting, PES 1999 |
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Country | Canada |

City | Edmonton |

Period | 99/7/18 → 99/7/22 |

### ASJC Scopus subject areas

- Economics, Econometrics and Finance (miscellaneous)
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
- Safety, Risk, Reliability and Quality

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## Cite this

*1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Conference Proceedings*(pp. 647-651). [787393] (1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Conference Proceedings; Vol. 2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PESS.1999.787393