Equivalent test method for stray magnetic field interferenceof three-phase heavy current transformer

被引：0
|
作者：
Zhao W. [1 ]
Xu W. [1 ]
Li S. [1 ]
Qu K. [2 ]
Huang S. [1 ]
Jiang B. [3 ]
机构：
[1] State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing
[2] Beijing Internet Based Engineering Co., Ltd., Beijing
[3] Metrology Center, State Grid Sichuan Electric Power Company, Chengdu
来源：
Zhao, Wei (zhaowei@tsinghua.edu.cn) | 2016年 / Science Press卷 / 42期
基金：
中国国家自然科学基金;
关键词：
Eccentric bus; External current; HCT; Magneticfield interference; Numerical simulation; Return bus;
D O I：
10.13336/j.1003-6520.hve.20161031024
中图分类号：
学科分类号：
摘要：
We put forward a stray flux test method for the heavy current transform (HCT) in a three-phase horizontal alignment bus system, based on the magnetic field synthesis of both the eccentric bus current and the return bus currentto calculate the stray flux generated from external currents in a three-phase bus system. In the proposal, based on intensive analysis of numerical simulation results, a formula is obtained for solving the HCT stray flux and the maximum interference magnetic field. Under the formula, the mathematical model of the equivalent relationship between two types of magnetic field is given. Moreover,by solving the equation, we get the locating place of the eccentric and return buses. In order to evaluate the presented method, a real HCT has been taken as an example, the calculation results show that magnetic field curve and maximum HCT stray flux curve are consistent in shape, the presented method can accurately and effectively simulate the stray flux of the HCT in a three-phase bus system. © 2016, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：3651 / 3658
页数：7
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