| 谐波环境中的变压器负载能力问题 |
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| 引用本文： | 杨慕强,陈众励.谐波环境中的变压器负载能力问题[J].建筑电气,2014(10):41-43. |
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| 作者姓名： | 杨慕强 陈众励 |
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| 作者单位： | 1. 浙江省建筑设计研究院,杭州市,310006
2. 上海建筑设计研究院有限公司,上海市,200041 |
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| 摘 要： | 谐波电流的存在可能使电力变压器绕组线圈承载超过其额定工况的电流，从而导致变压器的额外温升，并使得变压器负载能力下降。本文阐述D， yn11电力变压器在抑制谐波过程中的作用，介绍谐波系数K及电力变压器降容系数D的物理意义，并就电力变压器降容问题的形成机理展开讨论，给出降容系数D的工程计算实例。
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| 关 键 词： | 配电系统 谐波电流 变压器负荷率 谐波系数K 降容系数D 功率因数 温升 经验公式 |
Load Capacity Issues of Transformer in Harmonic Environment |
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| YANG Muqiang,CHEN Zhongli.Load Capacity Issues of Transformer in Harmonic Environment[J].Building Electricity,2014(10):41-43. |
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| Authors: | YANG Muqiang CHEN Zhongli |
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| Affiliation: | YANG Muqiang, CHEN Zhongli (1 Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China;2 Shanghai Institute of Architectural Design ＆ Research Co., Ltd., Shanghai 200041, China) |
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| Abstract: | The existence of the harmonic current may result in the bearing of excessive current by winding coils of power transformer, thereby leading to the additional temperature rise of transformer and reducing its load capacity. The paper describes the effect of the D, yn11 transformer on harmonic suppression, introduces the physical meanings of harmonic coefficient K and transformer derating factor D, discusses the mechanism of transformer derating and provides engineering calculation examples for derating factor D. |
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| Keywords: | distribution system harmonic current load rate of transformer harmonic coefficient K derating factor D power factor temperature rise empirical formula |
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