电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2015年
4期
89-96
,共8页
陈占锋%吴俊勇%郝亮亮%王晨%吴之林%何立汉
陳佔鋒%吳俊勇%郝亮亮%王晨%吳之林%何立漢
진점봉%오준용%학량량%왕신%오지림%하립한
电流传感器%电流测量%空心线圈%单相导线%三相导线%相对误差
電流傳感器%電流測量%空心線圈%單相導線%三相導線%相對誤差
전류전감기%전류측량%공심선권%단상도선%삼상도선%상대오차
current sensor%current measurement%hollow coil%single-phase conductor%three-phase conductor%relative error
提出了一种基于空心线圈的电流测量新方法，通过在导线周围空间按一定规则布置的空心线圈组来测量电流。分析了单个线圈感应电压与单相导线电流的关系。分别提出了单相和三相电流的测量方法并进行了仿真。制作了实际的空心线圈组，并进行了电流测量实验。对线圈安装过程中可能存在的位置偏差对测量精度的影响进行了仿真分析。仿真和实验结果验证了该方法的正确性。
提齣瞭一種基于空心線圈的電流測量新方法，通過在導線週圍空間按一定規則佈置的空心線圈組來測量電流。分析瞭單箇線圈感應電壓與單相導線電流的關繫。分彆提齣瞭單相和三相電流的測量方法併進行瞭倣真。製作瞭實際的空心線圈組，併進行瞭電流測量實驗。對線圈安裝過程中可能存在的位置偏差對測量精度的影響進行瞭倣真分析。倣真和實驗結果驗證瞭該方法的正確性。
제출료일충기우공심선권적전류측량신방법，통과재도선주위공간안일정규칙포치적공심선권조래측량전류。분석료단개선권감응전압여단상도선전류적관계。분별제출료단상화삼상전류적측량방법병진행료방진。제작료실제적공심선권조，병진행료전류측량실험。대선권안장과정중가능존재적위치편차대측량정도적영향진행료방진분석。방진화실험결과험증료해방법적정학성。
A novel current measuring principle based on hollow coils is proposed,on which the current is measured through several coils placed around conductors according to certain rules.Firstly,based on the electromagnetic induction law and Biot-Savart law,the relationship between induced voltage of single coil and the conductor current is derived.On this basis,the method of measuring the single-phase current and that of measuring the three-phase current are presented,respectively and verified by simulation and experimental results.Finally,the measurement deviation caused by actual factors is analyzed.And the relative error curve of the sensor in the coil installing process is obtained through simulation.
