Influence of automatic control of a tap changing step-up transformer on power capability area of generating unit
Artykuł w czasopiśmie
MNiSW
30
Lista A
| Status: | |
| Autorzy: | Machowski Jan, Kacejko Piotr |
| Rok wydania: | 2016 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 140 |
| Strony: | 46 - 53 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus | Web of Science Core Collection |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| A synchronous generator is a source of real and reactive power, which can be conveniently regulated over a wide range of values. The real and reactive power of a synchronous generator are limited by the reactive power capability curve, which is determined by the following constraints: stator (armature) current, rotor (field) current, load angle (owing to steady-state stability), the temperature in the end region of the stator magnetic circuit, turbine power, and the terminal voltage of the generator. Large generating units operate on a high-voltage network by using step-up transformers, which can be equipped with on-load tap changers. This article discusses how controlling the transformation ratio of step-up transformers can enlarge the area surrounded by the reactive power capability curve. Equations suitable for such an analysis are derived, and a numerical example is presented. A new control algorithm for tap changing is proposed. (C) 2016 Elsevier B.V. All rights reserved. |
