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首页> 外文会议>2011 International Conference on Electrical, Control and Computer Engineering >Measuring temperature rise at transformer core under nonlinear loading
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Measuring temperature rise at transformer core under nonlinear loading

机译：在非线性负载下测量变压器铁心的温升

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The life of power distribution transformers has been greatly reduced by the significantly addition of electronic loads in the distribution system. The characteristics of loads now becoming more nonlinear which in turn produce more harmonics. Power transformers are constantly affected due to its location between the variety of loads at consumer's side and the power supply side. Additional loss at transformer core caused by harmonics is translated by the increasing heating it experienced. This paper focuses on measuring temperature of the core as transformer is connected with nonlinear loads. A circuit producing harmonic rich load current is subjected to 75VA power transformer. Tests are conducted at 100% of nameplate rating using purely resistive loads and by connecting nonlinear loads. Differences in type of loads are made in order to magnify the additional heat effect of harmonics in power transformer operation. Laser radiating thermal device is used to measure heat at three different points.
机译：配电系统中电子负载的显着增加大大降低了配电变压器的使用寿命。负载的特性现在变得更加非线性，从而产生更多的谐波。由于电源变压器位于用户侧和电源侧的各种负载之间，因此其不断受到影响。谐波引起的变压器铁心的额外损耗可通过其所经历的不断增加的热量来解决。本文着重于变压器与非线性负载连接时的铁心温度测量。产生高次谐波负载电流的电路要经过75VA电源变压器。使用纯电阻性负载并通过连接非线性负载，以铭牌额定值的100％进行测试。为了扩大电力变压器运行中谐波的附加热效应，负载类型有所不同。激光辐射热装置用于测量三个不同点的热量。

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