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发表于 2013-9-23 23:36
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来自: 中国浙江嘉兴
When the EDG are intended to be used as harbour generator, harbour generator can be conneted in MSB BUS bar by two methord:
1. disconnect the DG, then manual connent the EDG to MSB bus bar, a short time black-out will occue, before power restoration;
2. manual parallel EDG with DG, after parallel, then manual trip off DE; there are not black-out occur;
3. Automatic parallel and connect EDG to MSB, then manual trip off DG;The control circuit will be complcated than method 2 which is simple.
the precondition of generating power parallel:
v1=v2
f1=f2
.......cos ..
beta= beta...
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