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DOI: 10. 13335 /j . 1000 -3673.pst .2000.02.001
24 2 Vol. 24 No. 2
20002 ower System Tech nology Feb. 2000
: 1000-3673(2000) 02-0005-05
冯复生
(华北电力科学研究院,北京 100045)
IN SULATION RESISTAN CE MEASUREMEN T OF GENERATOR STATOR WINDING
AND ANALYSIS OF ITS MIN IMUM ALLOWABLE VALUE
FEN G Fu-sheng
( North China Electric ower Research Institute, Beijing 100045, China)
ABSTRACT: Th e insulation resistance measurement of gen- 。、,
erator stator winding is one of the effective methods to diag- 、
nose the insulation state of th e winding being tested There. ,
are still great difference between domestic and foreign stan-
,
dards on the stipulation including the minimum allow able
,
value of insulation resistance and the conversion relation of
。
insulation resistance at different temperatures, so that it is
impossible to determine the real insulation state on site. ,
Based on the above mentioned various minimum allow able ,
values and conversion relations of insulation resistance, a
systematic comparison is presented in this paper, and then, ,
the reasonable minimum allowable value and conversion re-
lation have been recom mended by domestic and foreign ex-
。
periences in addition relevant domestic standards have, ,
been suggested.
,
KEY WORDS: insulation resistance; polarization index;
,
stipulative value
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