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hsf_edu: 金币+100, 翻译EPI+1, ★★★★★最佳答案, 非常不错，谢谢了！ 2015-03-07 20:24:24
在变压器 等效电路 的基础上，通过 对变压器 磁化曲线的 分段线性化 处理，列写了 一组 约束变压器 空载合闸后 暂态过程中 磁通变化 的微分方程。通过求解 该组微分方程，以及 把磁通变化规律 按不同的时间段 来描述，得到一组 用于对励磁涌流 进行数字仿真的 迭代公式，利用 迭代公式 画出了 励磁涌流过程中 电流及其分量 的变化曲线。
Based on the equivalent circuit of transformer, the piecewise linearization was conducted to the transformer magnetizing curve, as a result, this paper listed a group of differential equations that constrained the flux change in transient process after closing switch without load. By solving the differential equation group, and describing the rule of magnetic flux change in various time intervals, it can obtain a group of iterative formulas for digital simulation of the magnetizing inrush current, of which,the changing curve of the currency and components during inrush process can be drawn.
定义了 一种新 励磁涌流 非周期分量 计算方法，得出了 非周期分量 及其衰减速度 的推导公式。
By defining a new computing method for aperiodic components of the magnetizing inrush current, it can obtain the formula derivation for computing aperiodic component and its rate of attenuation.
通过 曲线拟合的方法，分析了 励磁涌流 包络线 及励磁渗流 非周期分量的 变化规律，发现时间常数的 变化规律 与短路电流 非周期分量 时间常数的 差别，为变压器 励磁涌流的识别 提供了 保障。
Through curve fitting method, this paper analyzed the changing rule of envelope line and aperiodic component of the magnetizing inrush current,and discovered the difference between change rule of time constant and the time constant of aperiodic component of short-circuit current, which provide guarantee for identification of excitation inrush current. |
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