| 直流偏磁状态下电力变压器铁心动态磁滞损耗模型及验证 | |
| 曹林 ; 何金良 ; 张波 ; CAO Lin ; HE Jin-liang ; ZHANG Bo | |
| 2010-05-12 ; 2010-05-12 | |
| 关键词 | 电力变压器 直流偏磁 动态磁滞损耗 Jiles-Atherton模型 遗传算法 power transformer DC biasing dynamic hysteresis loss Jiles-Atherton model genetic algorithm TM41 |
| 其他题名 | Dynamic Hysteresis Loss Model of Power Transformer Under DC Current Biasing and Its Verification |
| 中文摘要 | 直流偏磁状态下,电力变压器的附加损耗显著增加,试验测量得到的变压器空载损耗不能充分表征铁心实际损耗。为正确评估变压器铁心可能出现的过热问题,有必要建立其准确的数学模型。该文在Jiles-Atherton基本磁滞模型的基础上,从能量平衡原理出发,考虑铁心在交流状态下的涡流损耗和异常损耗,建立了合理可逆磁化系数条件下,以磁通密度作为输入量的铁心动态磁滞损耗模型。利用遗传算法提取试验变压器铁心在正常工作条件下的动态模型参数,并用于对不同幅值直流偏磁电流作用下的铁心损耗进行仿真计算。将计算结果与试验结果进行对比,发现二者吻合较好,说明该动态模型能较好的描述直流偏磁状态下电力变压器铁心动态磁滞损耗,验证了模型的正确性和实用性。; Under DC current biasing the additional losses of power transformer increase significantly, as a result the loss of iron core can not be identified from the no-load loss correctly. It is necessary to establish an accurate model of the iron core to evaluate its possible overheating problem. Based on the Jiles-Atherton model, the dynamic hysteresis loss model of the transformer core considering the classic eddy current loss and abnormal loss is developed, which is suitable for all the reasonable coefficient of reversible magnetization and adopting the flux density as entry variable. By using genetic algorithm, the model parameters are extracted from the no-load experimental results of a small single-phase transformer and then applied to simulate the iron core behavior at different magnitudes of DC biasing current. Compared with the experimental results of DC current biasing, the simulations are in a good agreement. This indicates that the dynamic hysteresis loss model can describe the relation between the magnitude of DC biasing current and transformer core loss correctly and practically. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/29221]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 曹林,何金良,张波,等. 直流偏磁状态下电力变压器铁心动态磁滞损耗模型及验证[J],2010, 2010. |
| APA | 曹林,何金良,张波,CAO Lin,HE Jin-liang,&ZHANG Bo.(2010).直流偏磁状态下电力变压器铁心动态磁滞损耗模型及验证.. |
| MLA | 曹林,et al."直流偏磁状态下电力变压器铁心动态磁滞损耗模型及验证".(2010). |
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