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JP2013120666A Excitation inrush current suppression device 有权
标题翻译：激发冲击电流抑制装置
公开(公告)号：JP2013120666A
公开(公告)日：2013-06-17
申请号：JP2011267543
申请日：2011-12-07
申请人： Kodensha:Kk , 株式会社興電舎
发明人： KAI TOSHIYASU , HASE YOSHIHIDE
IPC分类号： H01H33/59 , H02H7/04 , H02J3/00
CPC分类号： H02H7/04 , H01H9/563 , H02H7/0455 , H02H9/002
摘要： PROBLEM TO BE SOLVED: To provide an excitation inrush current suppression device capable of calculating a residual magnetic flux of a three-phase transformer with accuracy, and suppressing an excitation inrush current.SOLUTION: An excitation inrush current suppression device 10 has: a voltage measurement part 1 measuring respective phase voltages of a transformer 23 and system voltages of respective phases; an effective blocking timing calculation part 2 calculating an effective blocking timing when instantaneous values of all three phases of the respective phase voltages are converged into zero; an iron core magnetic flux calculation part 3 integrating the phase voltages respectively to calculate magnetic fluxes of the respective phases of an iron core of the transformer 23; an effective residual magnetic flux calculation part 4 calculating effective residual magnetic fluxes of the respective phases by using the magnetic fluxes of the respective phases at the effective blocking timing among the magnetic fluxes of the respective phases as the effective residual magnetic flux; a closing phase angle calculation part 5 calculating a closing phase angle to a system side circuit breaker 21 on the basis of the effective residual magnetic fluxes of the respective phases; and a closing phase angle controller 6 closing the system side circuit breaker 21 on the basis of the system voltages of respective phases and the closing phase angle.
摘要翻译：解决的问题：提供一种能够精确地计算三相变压器的剩余磁通并抑制励磁浪涌电流的励磁涌流抑制装置。励磁涌流抑制装置10具有：电压测量部1，测量变压器23的各相电压和各相的系统电压; 有效阻塞定时计算部分2计算当各个相电压的所有三相的瞬时值收敛到零时的有效阻断定时; 铁心磁通计算部分3分别积分相电压以计算变压器23的铁芯各相的磁通量; 有效剩余磁通计算部分4，通过使用各相的磁通量中的有效阻断定时的各相的磁通量来计算各相的有效剩余磁通量作为有效剩余磁通量; 闭合相位角计算部5，根据各相的有效剩余磁通量，算出与系统侧断路器21的闭合相位角; 以及关闭相位角控制器6，其基于各相的系统电压和闭合相位角关闭系统侧断路器21。版权所有（C）2013，JPO＆INPIT

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