变压器分接头控制和line drop compensation怎么实现啊

wpf0221

最近在做变压器控制的relay，怎么样实现延迟60秒再调节呢？或者谁做过这个求分享...多谢~~

mingyu

On-Line Tap Changer
All transformer components are equipped with an on-line tap changer.  When the tap changer is enabled, a diagonal line will appear on the component graphic, labelled Tap.
1 Q' F2 N7 _) d5 z5 \! TA change in tap setting is modeled as a change in the turns-ratio of the transformer.  The per-unit leakage reactance and magnetizing currents, specified for 100% tap, are used to calculate admittances for the new voltage rating, corresponding to the tap setting.
EXAMPLE:
Let us assume for simplicity, that a transformer is configured as Y-Y, with winding voltages rated at 10 kV primary and 100 kV secondary, and a tap changer is placed on the primary winding.  The turns-ratio for this transformer is of course 1:10.
$ b! n# b; f( @) ?; [! Z( IAn on-line tap input of 1.0 corresponds to a 100% tap (i.e. no tap adjustment).  If the tap input value is adjusted to say 1.05, then the turns-ratio would become 1.05:10 or 1:9.52381.
. J  n' p5 z( F9 @7 uIt is possible to have a continuous change of tap, but this would require a re-ordering of the network solution every time step. It is more practical to change tap settings in steps, either through manual adjustment, using a slider or rotary switch, or from a controller with appropriate delays and steps built in.

wpf0221

回复 2# mingyu

Thanks a lot for the reply and explanation...do you have any pscad example about OLTC control?

mingyu

没有，找客服要。

wlm_28

没做过，不太清楚呀