Voltage regulation includes two fields: one is voltage rise near the end of the feeder: another is the tap hunting phenomenon of tapchange under load (TCUL) transformers.
The traditional theory of tapchange of the load-ratio transformer which has not taken the ferromagnetic characteristic into account is a special example of the theory presented in this paper.
在变压器铁磁特性不明显的情况下推导出的传统有载调压变压器无暂态切换理论只是文中理论中的一个特例。
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The structure and principle of energy storage mechanism in V type on-loadtap-changer are analyzed. The torque change rule is presented. It is applied in online monitoring of tap-changer.