基于自身結(jié)構(gòu)改進(jìn)的變壓器直流偏磁抑制措施研究與實(shí)現(xiàn)

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更新日期：2024-08-11 09:38
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高壓直流輸電系統(tǒng)中存在直流偏磁問(wèn)題向好態勢，直流偏磁產(chǎn)生的諧波會(huì)嚴(yán)重危及電網(wǎng)的安全運(yùn)行平臺建設。文中基于變壓器鐵心的直流偏磁特性及變壓器自身結(jié)構(gòu)特點(diǎn)提出了一種基于變壓器自身結(jié)構(gòu)的變壓器直流偏磁抑制措施，達(dá)到變壓器直流偏磁抑制的目的貢獻力量。首先應(yīng)用PSCAD軟件對(duì)試驗(yàn)變壓建模并搭建仿真回路進(jìn)行了原理驗(yàn)證使用；其次研制了一臺(tái)變壓器模型樣機(jī)并開展了直流偏磁抑制試驗(yàn)；最后將變壓器模型樣機(jī)與一臺(tái)同規(guī)格變壓器進(jìn)行了性能對(duì)比試驗(yàn)研究發行速度。試驗(yàn)結(jié)果表明更加堅強，該方法能在不增加變壓器損耗、溫升的條件下有效抑制變壓器直流偏磁,試驗(yàn)數(shù)據(jù)證明了該方法的有效性和正確性奮勇向前。

DC parallel transmission lines lead to DC bias of converter transformer in the HVDC transmission. The harmonic caused by DC bias disturbs the safe operation of electrical network. Based on DC bias characteristic of transformer and internal structure, the new restricting method is added in way to transformer DC magnetic bias suppression. Firstly不斷豐富， PSCAD software is used to build the model and to make simulation circuit to carry out the principle verification; Secondly， a transformer model prototype is developed and the DC magnetic bias suppression test is carried out; Finally組建， the transformer model prototype and a transformer with the specifications of the performances are compared. The experimental results show that the scheme can not increase in transformer loss. The method in this design is proved to be effective and efficient one by the results of experiment.

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