不同工作模式下基于谐波电流有效值分级标准的CRT参数设计

发布时间：2019-01-03 20:00

【摘要】：控制绕组级数的减少对于提高变压器式可控电抗器(CRT)的工作效率、降低设计制造难度具有重要意义。基于国标GB/T 14549—93对谐波电流的要求,提出了更经济的CRT谐波电流有效值分级标准,在此基础上分析了3种典型单支路工作模式下控制绕组电流、控制绕组级数、谐波电流之间的关系,并以谐波电流为约束条件对CRT不同工作模式下的控制绕组级数和各级电流等参数进行设计,同时对3种工作模式的控制绕组级数大小进行比较分析。算例计算结果表明:在基于谐波电流有效值分级标准对CRT控制绕组参数进行设计时,控制绕组级数与第1级控制绕组电流、最大k次谐波电流和工作模式相关,不同工作模式下控制绕组级数不同,但注入电网的谐波电流均能满足要求,且第1级控制绕组电流分配相差不大时,固定单支路工作模式下谐波电流最小。
[Abstract]:The reduction of control winding series is of great significance to improve the working efficiency of transformer controllable reactor (CRT) and reduce the difficulty of design and manufacture. Based on the requirements of GB/T 14549-93 for harmonic current, a more economical classification standard of CRT harmonic current RMS value is proposed. On this basis, the control winding current and the control winding series in three typical single-branch operation modes are analyzed. The relationship between harmonic currents and the parameters of control winding series and various levels of current in different working modes of CRT are designed with harmonic current as constraint condition. At the same time, the size of control winding series of three working modes is compared and analyzed. The calculation results show that when the parameters of CRT control winding are designed based on the RMS standard of harmonic current, the series of control windings are related to the first stage control winding current, the maximum k order harmonic current and the working mode. The series of control windings are different in different working modes, but the harmonic current injected into the power network can meet the requirements. When the current distribution of the first stage control winding is not different, the harmonic current in the fixed single branch mode is the smallest.
【作者单位】：兰州交通大学自动化与电气工程学院;兰州交通大学甘肃省轨道交通电气自动化工程实验室;西安交通大学电力设备电气绝缘国家重点实验室;
【基金】：国家自然科学基金资助项目(51167009,51367010) 甘肃省科技计划资助项目(17JR5RA083) 兰州交通大学优秀科研团队项目(201701)~~
【分类号】：TM47

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