A Simple Method to Determine Synchronous Machine Quantities Using Frequency Characteristics of Operational Impedances

SUMMARY This paper presents a simple method for determining synchronous machine quantities: d‐ and q‐axes time constants and reactances. This method determines them only by drawing additional lines in the frequency characteristics of operational impedances. A new systematic drawing strategy for dete...

Full description

Saved in:
Bibliographic Details
Published inElectrical engineering in Japan Vol. 200; no. 4; pp. 45 - 52
Main Authors TANAKA, AKIRA, YAMAMOTO, SHU, ARA, TAKAHIRO, SAKAI, KAZUTO, KOMURO, SHUJI
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc 01.09.2017
Subjects
Circuits
Constants
dc test
Electric power supplies
Frequencies
frequency characteristics
operational impedance
Poles
quantities
Reactance
synchronous machine
Synchronous machines
Test procedures
Online AccessGet full text

Cover

More Information
Summary:SUMMARY This paper presents a simple method for determining synchronous machine quantities: d‐ and q‐axes time constants and reactances. This method determines them only by drawing additional lines in the frequency characteristics of operational impedances. A new systematic drawing strategy for determining transient/subtransient open‐circuit time constants and the d‐axis transient reactance is proposed. The frequency characteristics of operational impedances are obtained by the standstill dc test using a small dc power supply. Since the rotational test becomes unnecessary, the proposed method is suitable for tests in a factory. The validity of the proposed method was demonstrated with a numerical calculation example on a large‐capacity machine (800 MVA, 25 kV, two poles, 60 Hz) and an implementation test on a small‐capacity machine (10 kVA, 200 V, 31.9 A, four poles, 50 Hz).
ISSN:0424-7760
1520-6416
DOI:10.1002/eej.22983