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EnglishIn planning an interconnected power network it is very important to assess whether a voltage collapse occurs during a prefixed operating condition. However, the realistic circumstance, due to load forecast, that the nature of loads can be non-deterministic makes the use of present deterministic procedures unreliable, particularly when the network is operating near its voltage stability limit. To overcome this difficulty, the paper presents a practical probabilistic approach which treats loads as correlated random variables with multivariate normal distribution. Starting with a suitable linearized model of the system, the suggested technique can quantify the proximity of a power network to voltage instability under various expected operating conditions and, accordingly, can identify systematically all critical load buses. The usefulness and capability of the approach are illustrated by a numerical example.
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| Titolo: | A semi-dynamic approach to the voltage stability analysis of interconnected power networks with random loads | |
| Rivista: | ||
| Data di pubblicazione: | 1990 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/0142-0615(90)90015-4 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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