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大尺寸磁心式局部放电电流传感器的研究
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2009-07-14
吴湛
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介绍了大尺寸铁氧体磁心的分段组合式脉冲电流传感器。鉴于大尺寸传感器耦合系数比较低, 提出了一种基于脉冲前沿响应的传感器等效电路, 分析了它的转移阻抗函数, 并用软件对电路进行了仿真。传感器在电厂变压器套管上投运取得了满意效果。
Abstract Th is paper int roduces large2scale block current senso rs w ith ferrite co re. Since the coup ling coefficient of large2scale senso rs is low , the senso rps equivalent circuit based on response of pulse front is put fo rw ard, and analysis of its t ransit ing impedance as w ell as simulat ion w ith O rCAD softw are are p rovided. F inally, response of part ial discharge is supp lied after the senso rs w ere installed on flanges of h igh vo ltage bush ings in a pow er t ransfo rmer that is in service.
Abstract Th is paper int roduces large2scale block current senso rs w ith ferrite co re. Since the coup ling coefficient of large2scale senso rs is low , the senso rps equivalent circuit based on response of pulse front is put fo rw ard, and analysis of its t ransit ing impedance as w ell as simulat ion w ith O rCAD softw are are p rovided. F inally, response of part ial discharge is supp lied after the senso rs w ere installed on flanges of h igh vo ltage bush ings in a pow er t ransfo rmer that is in service.
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