## Abstract

This paper introduces a binary search algorithm using second order polynomial fitting to efficiently determine the maximum power transfer to a non-controlled load when accounting for variations in Thévenin voltage magnitude due to non-linearity. This is used for voltage stability boundary monitoring of a power system in real time. The binary search with polynomial fitting (BSPF) is compared to a reference algorithm, which sweeps over different load levels, and a binary search and is shown to improve both runtime and accuracy of results. The assessment method can take advantage of parallelization, which together with the BSPF algorithm makes it possible to determine a margin for each of the 2.000 non-controlled loads in a 3.000 bus test system in less than 6 seconds. This enables early detection of voltage instability in highly dynamic future smart grid based power systems.

Original language | English |
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Title of host publication | Proceedings of 2019 IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2019 |

Number of pages | 5 |

Publisher | IEEE |

Publication date | 1 Sept 2019 |

Article number | 8905466 |

ISBN (Electronic) | 9781538682180 |

DOIs | |

Publication status | Published - 1 Sept 2019 |

Event | 2019 IEEE PES Innovative Smart Grid Technologies Europe - Universitatea Politehnica din București, Bucharest, Romania Duration: 29 Sept 2019 → 2 Oct 2019 Conference number: 8 http://sites.ieee.org/isgt-europe-2019/ https://ieeexplore.ieee.org/xpl/conhome/8892271/proceeding |

### Conference

Conference | 2019 IEEE PES Innovative Smart Grid Technologies Europe |
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Number | 8 |

Location | Universitatea Politehnica din București |

Country/Territory | Romania |

City | Bucharest |

Period | 29/09/2019 → 02/10/2019 |

Internet address |

Series | Proceedings of 2019 IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2019 |
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## Keywords

- Power system analysis computing
- Power system stability
- Real-time assessment
- Thévenin equivalent