Premium
A Simple Method to Determine Synchronous Machine Quantities Using Frequency Characteristics of Operational Impedances
Author(s) -
TANAKA AKIRA,
YAMAMOTO SHU,
ARA TAKAHIRO,
SAKAI KAZUTO,
KOMURO SHUJI
Publication year - 2017
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22983
Subject(s) - reactance , transient (computer programming) , electrical impedance , control theory (sociology) , power (physics) , engineering , time constant , synchronous motor , simple (philosophy) , voltage , electronic engineering , electrical engineering , computer science , physics , philosophy , control (management) , epistemology , quantum mechanics , artificial intelligence , operating system
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).
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom