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2. 发明公开

KR1020130008844A 직류 누전차단기 有权
标题翻译：直流漏电流电路制动器
公开(公告)号：KR1020130008844A
公开(公告)日：2013-01-23
申请号：KR1020110069478
申请日：2011-07-13
申请人： 재단법인 기초전력연구원 , (주)금성계전
发明人： 한송엽 , 한후석 , 한진호 , 이한식 , 차기만
IPC分类号： H02H3/16 , H01H83/02 , G01R31/02
摘要： PURPOSE: A DC(Direct Current) leakage circuit breaker is provided to disconnect a DC line by detecting the flow of leakage current, excess current, and reverse current through the DC line. CONSTITUTION: A leakage current detecting part(A) comprises an annular core, a leakage-detectable zero current transformer(312), and leakage-detectable square-wave AC(Alternating Current) power supply parts(316,330). Target measuring DC lines pass through the annular core. The leakage-detectable zero current transformer is composed of a winding wire winding the annular core. The leakage-detectable square-wave AC power supply parts supply square-wave AC power to the winding wire of the leakage-detectable zero current transformer. A leakage current calculating part detects the size and polarity of leakage current. A leakage-cutoff control signal generation part generates leakage-cutoff control signals. An opening part(E) disconnects the target measuring current lines. [Reference numerals] (316) First square-wave AC power supply part; (318) First current calculating part; (320) First reference upper limit providing part; (322) First comparator; (324) First reference lower limit providing part; (326) Switching device driving coil; (328) Failure display; (330) Second square-wave AC power supply part; (332) Second current calculating part; (334) Second reference lower limit providing part; (336) Second comparator; (338) Second reference upper limit providing part; (350) First resistor; (352) Second resistor; (AA) Inverter; (B1) Load(-); (B2) Load(+); (C1) Power(-); (C2) Power(+)
摘要翻译：目的：提供DC（直流）泄漏断路器，通过检测通过直流线路的漏电流，过电流和反向电流的流量来断开直流线路。构成：泄漏电流检测部分（A）包括环形芯，可泄漏检测的零电流互感器（312）和可泄漏检测的方波AC（交流电）电源部件（316,330）。目标测量直流线穿过环形芯。泄漏检测的零电流互感器由缠绕环形芯的绕组线组成。泄漏检测方波交流电源部件向可泄漏检测的零电流互感器的绕组线提供方波交流电源。泄漏电流计算部分检测漏电流的大小和极性。泄漏切断控制信号生成部生成泄漏切断控制信号。打开部分（E）断开目标测量电流线。（附图标记）（316）第一方波交流电源部; （318）第一当前计算部分; （320）第一参考上限提供部分; （322）第一比较器; （324）第一参考下限提供部分; （326）开关装置驱动线圈; （328）故障显示; （330）第二方波交流电源部分; （332）第二电流计算部分; （334）第二参考下限提供部分; （336）第二比较; （338）第二参考上限提供部分; （350）第一电阻; （352）第二电阻; （AA）变频器; （B1）负载（ - ）; （B2）负载（+）; （C1）功率（ - ）; （C2）功率（+）

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