本文選題：直流電流測(cè)量 + 磁化電流�。� 參考：《華北電力大學(xué)》2014年碩士論文

【摘要】：首先介紹了直流大電流測(cè)量的幾種主要原理,分別列舉了由分流器、霍爾效應(yīng)、巨磁電阻效應(yīng)、磁光效應(yīng)、傳統(tǒng)鐵芯式直流電流互感器、直流比較儀、羅柯夫斯基(Rogowski)線(xiàn)圈等測(cè)量原理組成的各種直流電流傳感器,混合式直流電流傳感器、組合式高壓直流互感器,闡述了它們的外形、特征、工作特性和應(yīng)用實(shí)例。然后以理論分析和實(shí)驗(yàn)觀察相結(jié)合的方式對(duì)單鐵心磁調(diào)制器進(jìn)行了深入的研究。從鐵磁性物質(zhì)的磁滯回線(xiàn)開(kāi)始,分析研究了交流和直流同時(shí)激勵(lì)時(shí)鐵芯的磁滯回線(xiàn)；單一的正弦波電壓源激勵(lì)作用下磁化電流的波形；正弦波電壓與直流電流同時(shí)磁化時(shí)的鐵芯線(xiàn)圈電路等,針對(duì)理論分析的每一部分內(nèi)容都用實(shí)驗(yàn)觀察的方法做了驗(yàn)證。接下來(lái),在實(shí)驗(yàn)研究和理論分析的基礎(chǔ)上提出了一種測(cè)量直流電流的新方案——單鐵芯磁調(diào)制器峰差式直流電流測(cè)量方案,指出新測(cè)量方案有開(kāi)環(huán)測(cè)量和閉環(huán)測(cè)量?jī)煞N方式,并分別列出了用硬件和用單片機(jī)加軟件來(lái)實(shí)現(xiàn)開(kāi)環(huán)測(cè)量和閉環(huán)測(cè)量的電原理圖。
[Abstract]:The main principles of DC large current measurement are introduced, and the various DC current sensors, such as the shunt, Holzer effect, giant magnetoresistance effect, magnetoresistance effect, the traditional core type DC current transformer, the DC comparator and the Rocco J J Ki (Rogowski) coil, are respectively enumerated. The shape, characteristics, working characteristics and application examples of the combined HVDC transformer are described. Then the single core magnetic modulator is studied in a combination of theoretical analysis and experimental observation. From the hysteresis loop of ferromagnetic material, the hysteresis loop of the core is analyzed and studied at the simultaneous excitation of AC and DC. Line; the waveform of the magnetization current under the excitation of a single sinusoidal voltage source; the iron core coil circuit when the sinusoidal voltage and the DC current are magnetized at the same time. Each part of the theoretical analysis is verified by the experimental observation method. Then, a measuring method is put forward on the basis of experimental research and theoretical analysis. The new scheme of current current is the peak difference DC current measurement scheme of single iron core magnetic modulator. It points out that the new measurement scheme has two modes of open loop and closed loop measurement, and the electrical schematic of open loop measurement and closed loop measurement with hardware and single chip computer and software are listed respectively.

【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM835.2

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