CAJ | 학술논문

针对差分式光学电流互感器抗外磁场干扰能力差的问题，提出一种提高其磁场抗扰度的新方法。建立差分式光学电流互感器的磁场抗扰度数学模型，研究不同布置方式下差分式光学电流互感器的磁场抗扰度特性。研究表明，传统布置方式下差分式光学电流互感器的磁场抗扰度小，是导致其抗外磁场干扰能力差的根本原因。研究发现，差分式光学电流互感器总存在4个磁场抗扰度无穷大的环外 P 点，据此提出一种最佳方位角优化方案，并给出最佳方位角的计算方法。试验结果表明，差分式光学电流互感器采用最佳方位角优化方案时，相间干扰引起的误差小于0.08%，与传统布置方式相比减少一半。试验结果证明了最佳方位角优化方案的正确性与实用性。
침대차분식광학전류호감기항외자장간우능력차적문제，제출일충제고기자장항우도적신방법。건립차분식광학전류호감기적자장항우도수학모형，연구불동포치방식하차분식광학전류호감기적자장항우도특성。연구표명，전통포치방식하차분식광학전류호감기적자장항우도소，시도치기항외자장간우능력차적근본원인。연구발현，차분식광학전류호감기총존재4개자장항우도무궁대적배외 P 점，거차제출일충최가방위각우화방안，병급출최가방위각적계산방법。시험결과표명，차분식광학전류호감기채용최가방위각우화방안시，상간간우인기적오차소우0.08%，여전통포치방식상비감소일반。시험결과증명료최가방위각우화방안적정학성여실용성。
The anti-interference ability of differential optical current transducer (DOCT) is weak. A novel method was proposed to improve the magnetic field immunity of DOCT. The mathematical model of magnetic field immunity of DOCT was established, and the magnetic field immunity characters of DOCT arranged in different ways were researched. The research showed that the magnetic field immunities of DOCT arranged in tradition ways are small and lead to a weak anti-interference ability to external magnetic field. The research discovered that there must be four P points around DOCT on where the magnetic field immunities are infinite. Basing on it, the optimization scheme of best azimuth angle was proposed, and the method to calculate the best azimuth angles was provided. The experimental results showed that while the best azimuth angle optimization scheme was applied, the interference error induced by crosstalk was less than 0.08%, which was half of the error of conventional arrangement scheme. Experimental results demonstrate the correctness and practicality of the optimum azimuth optimization scheme.