公开(公告)号：US20160156567A1

公开(公告)日：2016-06-02

申请号：US14635538

申请日：2015-03-02

申请人： HITACHI, LTD.

发明人： Hideyuki MIYAHARA ,  Ryoichi UEDA

IPC分类号： H04L12/911 ,  H04L29/08 ,  H04L12/46

CPC分类号： H04L12/4641 ,  G06F9/455 ,  G06F9/45558 ,  G06F11/3414 ,  G06F11/3433 ,  G06F2009/45591 ,  G06F2009/45595 ,  G06F2201/815 ,  H04L41/5009 ,  H04L41/5025 ,  H04L43/0876 ,  H04L43/50 ,  H04L67/1012

摘要： A method of allocating a computer resource, for dynamically changing a virtual machine group in a computer system, the method comprising: acquiring, by a management computer, performance of the virtual machine group for providing the service; comparing, by the management computer, the acquired performance of the virtual machine group with a performance condition for the service set in advance; determining, by the management computer, the computer resource to be changed within the virtual machine group in accordance with a result of the comparison; measuring, by the management computer, performance of the virtual machine by conducting a trial run of the service on the virtual machine corresponding to the computer resource to be changed; determining, by the management computer, whether or not the measured performance satisfies the performance condition for the service; and applying, by the management computer, the change when the measured performance satisfies the performance condition for the service.

摘要翻译： 一种分配计算机资源的方法，用于动态地改变计算机系统中的虚拟机组，所述方法包括：由管理计算机获取用于提供所述服务的所述虚拟机组的性能; 通过管理计算机比较预先获得的服务集合的性能状况对虚拟机组的获取性能; 由所述管理计算机根据所述比较结果确定所述虚拟机组内要更改的计算机资源; 由所述管理计算机测量所述虚拟机的性能，所述虚拟机通过在对应于要更改的所述计算机资源的所述虚拟机上进行所述服务的试运行; 由管理计算机确定测量的性能是否满足该服务的性能条件; 以及当所述测量的性能满足所述服务的性能条件时，由所述管理计算机应用所述改变。

公开(公告)号：US20190101521A1

公开(公告)日：2019-04-04

申请号：US16130308

申请日：2018-09-13

申请人： Hitachi, Ltd.

发明人： Li LU ,  Yoshio HAMADATE ,  Toshiaki ROKUNOHE ,  Akira YAMAGISHI ,  Hideyuki MIYAHARA

IPC分类号： G01N33/28 ,  G01N21/25 ,  H01F27/28

摘要： There is provided a diagnosing device for an on-load tap changing apparatus of a transformer, which can diagnose the degradation degree of insulating oil at high accuracy by a relatively simple device configuration. A diagnosing device for an on-load tap changing apparatus has an insulating oil tank in which insulating oil is sealed, a changeover switching device that is disposed within the insulating oil tank and performs the tap changing operation of a tap winding, a tap selector that selects the tap position of the tap winding, and a polarity (transposition) changer that inverts the polarity of the tap winding or a winding connected to the tap winding. The diagnosing device includes an arc discharge light detector that detects arc discharge light that is emitted at changing the tap position of the tap selector. The degradation degree of the insulating oil is diagnosed based on the arc discharge light detected by the arc discharge light detector.

公开(公告)号：US20160055965A1

公开(公告)日：2016-02-25

申请号：US14780626

申请日：2014-03-07

申请人： HITACHI, LTD.

发明人： Hideyuki MIYAHARA ,  Akira YAMAGISHI ,  Kenji OKUDA ,  Toshiaki TANAKA

IPC分类号： H01F27/40 ,  H01F27/24 ,  H01F27/02 ,  H01F27/28

CPC分类号： H01F27/402 ,  G01R31/16 ,  H01F27/02 ,  H01F27/04 ,  H01F27/24 ,  H01F27/2823 ,  H01F2027/406

摘要： A stationary induction electric machine which makes it possible to detect partial discharge in the stationary induction electric machine with favorable sensitivity and easily retrofit an electromagnetic wave detection sensor to the already installed stationary induction electric machine is provided. The stationary induction electric machine has in a tank a core including a plurality of core legs and a winding wound around the core legs. A polymer bushing 6 is secured on the upper face of the tank through a support fitting 18. The polymer bushing 6 is provided with an electromagnetic wave detection sensor 11, which is placed in a position where the support fitting 18 is avoided.

摘要翻译： 提供一种固定式感应电机，其能够以良好的灵敏度检测静电感应电机的局部放电，并且容易地将电磁波检测传感器改装到已经安装的静止感应电机。 固定式感应电机在罐中具有包括多个芯腿的芯和缠绕在芯腿上的绕组。 聚合物衬套6通过支撑配件18固定在罐的上表面上。聚合物衬套6设置有电磁波检测传感器11，其被放置在避免支撑配件18的位置。