九域图原理是电压无功控制的成熟理论，但在处理三绕组变压器时有一定的难度。
The nine-zone graph theory is widely recognized in reactive power optimization but hard to deal with three-coil transformers.
因此三台三绕组变压器间通过负载的相互调整可实施分列运行、并列运行与不同台数组合运行方式共计289种。
So totaled 289 kinds of operation modes are presented, such as load adjusting, splitting, parallel and different sets combination etc, among the three transformers.
本文提出了三绕组变压器的一种新的三相模型，这种模型避免了现有模型存在的误差大或维数高以及奇异性问题。
A kind of three-phase models of three-winding transformers were presented which overcame some drawbacks in the existent models such as the large error or high dimension and singularity.
对由两台三绕组变压器组成的系统进行计算，结果令人满意，验证了基于动态规划法求解该问题是可行的和有效的。
The calculation result of power system composed of two three-coil transforms is satisfying, which proves it available to solve the problems on base of dynamic programming method.
在分析双绕组变压器的差动保护算法的基础上，提出了适用于三相三绕组变压器的比率制动式算法，并对判据进行了简化。
Based on the analysis of the differential protection of the double winding transformer, the paper presents a simplified ratio restraint algorithms for the three phase, three winding transformer.
利用有限元算法分析了三相电力变压器绕组各线匝在不同运行模式下电动力引起振动。
Based on finite element method (FEM), the vibration of power transformer windings caused by electrodynamic force is analyzed.
在分析研究三绕组配电变压器等效电路的基础上，介绍了三绕组配电变压器阻抗及等效电路参数的工程计算方法。
Based upon the analysis of an equivalent circuit for distribution transformer with three windings, an engineering calculation method for the reactance and parameters of this transformer is introduced.
电抗器可直接接在输电线路上或接在变压器第三绕组上，每种接法给系统带来不同的好处。
Reactors may be either directly connected to the transmission line or connected on transformer tertiary windings, each location offering specific system benefits.
改良麦氏输出变压器的三个绕组采用三线并绕，当然，也需要考虑绕组的极性。
The three windings of this modified version of the McIntosh output transformer are wound trifilar, again with proper consideration given to polarities.
预测结果表明：改进的三层BP神经网络能够较好地实现变压器绕组热点温度预测。
Simulation results show that the improved three-layer BP neural network can implement transformer winding hot spot temperature prediction well.
所述三相多副边绕组变压器的原边直接或通过高压开关与三相电网的电压输出端相连；
The primary side of the three-phase secondary line winding transformer is directly connected with the voltage output end of the three phase network;
所述三相多副边绕组变压器的原边直接或通过高压开关与三相电网的电压输出端相连；
The primary side of the three-phase secondary line winding transformer is directly connected with the voltage output end of the three phase network;
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