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[求助]
摘要翻译
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| 基于Matlab的串并联转换模型的单相线性变压器运行过程模拟。变压器是电力系统中一个极其重要的设备，它为我国经济发展提供可靠、不间断能源，因此研究变压器运行特性具有重要意义。首先，给出变压器空载运行、负载运行及等效电路参数折算的数学模型。然后，提出一种串并联模型励磁参数标幺值转换公式，使单相变压器模型的计算结果更准确。最后，利用Matlab/Simulink建立变压器运行状态的仿真模型。仿真结果表明：空载运行时的变比k=U1/ U2；TTSC计算的励磁电流值更准确；变压器瞬间加入负载，I2变大，I1变大，U2略微减小；负载开闸后的U2出现异常短暂反向大幅振动；负载短路故障后的故障电流超过正常负载电流的7倍，为诊断变压器过负荷运行提供理论支持。 |
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fengguanhua
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北河三撒: 金币+20, ★★★很有帮助 2016-12-11 12:53:22
北河三撒(fjtony163代发): 金币+50, 代发 2016-12-22 05:12:15
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北河三撒(fjtony163代发): 金币+50, 代发 2016-12-22 05:12:15
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operation process of single-phase linear transformer is simulated based on serial-parallel conversion model of Matlab. Transformer is one of the most important equipment in power system and provides a reliable and uninterrupted energy source for the economic development of our country. Therefore, it is significant to study the operation characteristics of the transformer. Firstly, the mathematical model of the transformer no-load operation, load operation and equivalent circuit parameters are given. And a conversion formul of standard values of excitation parameters for series parallel model is proposed, which makes the calculations of single-phase linear transformer model more accurate. Finally, simulation model of the transformer in operation state is established by using Matlab/Simulink. The simulation results show that ratio of no-load operation is equal to U1/ U2; excitation current value calculated by TTSC is more accurate; adding instantly load to the transformer，I2, I1 increased and U2 decreased slightly; abnormal transient backward sharp vibration occurs to U2 after offloading; after load short circuit, fault current is 7 times bigger than the normal load current, providing theoretical support for the diagnosis of transformer overload operation. 不是一个研究方向，还有些专业词汇翻译不到位，见谅，水平有限，仅供参考 |
2楼2016-11-22 15:59:10
