公开(公告)号：US4672523A

公开(公告)日：1987-06-09

申请号：US854597

申请日：1986-04-22

申请人： Niyazi Ari ,  Diethard Hansen ,  Hendrik Hoitink ,  Hans Schar

发明人： Niyazi Ari ,  Diethard Hansen ,  Hendrik Hoitink ,  Hans Schar

IPC分类号： H02H3/44 ,  H02H7/10

CPC分类号： H02H3/44

摘要： The present invention relates to a protective device for a load connected to a power supply line of an electric power system, comprising an LC network having low-pass characteristics, connected into the power supply line on the system side preceding the load. So that disturbances with frequencies below the cut-off frequency of the LC network can also be kept away from the load, a switching element controlled by a monitoring device is arranged according to the invention in series with the LC network in the power supply line. The monitoring device is connected to the power supply line on the system side at a junction preceding the switching element and keeps the switching element closed only for as long as the instantaneous value of the time derivation of the voltage on the power supply line deviates from the instantaneous value of a nominal value which is predeterminable in its variation with time, by no more than an equally predeterminable amount.

摘要翻译： 本发明涉及连接到电力系统的电源线的负载的保护装置，包括具有低通特性的LC网络，连接到负载之前的系统侧的电源线。 因此，频率低于LC网络的截止频率的干扰也可以远离负载，根据本发明，由监控装置控制的开关元件与电源线中的LC网络串联布置。 监控装置在开关元件之前的结点处连接到系统侧的电源线，并且仅在电源线上的电压的时间推导的瞬时值偏离 在其随时间的变化中可预先确定的名义值的瞬时值不超过同样可预先确定的量。

公开(公告)号：US4661763A

公开(公告)日：1987-04-28

申请号：US698845

申请日：1985-02-06

申请人： Niyazi Ari ,  Gerhard Linhofer

发明人： Niyazi Ari ,  Gerhard Linhofer

IPC分类号： G05F1/70 ,  G05F1/30 ,  H02J3/06 ,  H03H7/20 ,  H02J3/18

CPC分类号： G05F1/30 ,  H02J3/06 ,  H03H7/20

摘要： Phase shifters are used in meshed, multi-phase power supply systems for improving their transmission stability and for load-flow regulating purposes. In order to be able to use a less costly exciter transformer of lower rating or the tertiary or compensation winding of a system coupling transformer for generating intermediate-circuit voltages as a function of system input voltages, a resonant circuit is provided between the exciter transformer and an auxiliary transformer. In this resonant circuit consisting of series-connected capacitors and inductive resistances which are connected to taps between these capacitors and can be switched in and out by means of alternating-current switches, tap voltages are generated which are supplied to the primary windings of the auxiliary transformer. At the secondary windings, connected in series with phase conductors of the auxiliary transformer, auxiliary voltages occur which are superimposed on the system input voltages and effect the desired phase shifts. Instead of air chokes which can be switched off, chokes with a ferromagnetic core or the impedance of a transformer, the secondary winding of which can be short-circuited by means of an alternating-current switch, can also be used as variable inductive resistances in the resonant circuit. The inductive resistances can also be star-connected instead of delta-connected.

摘要翻译： 移相器用于网状多相电源系统，以提高其传输稳定性和负载流调节目的。 为了能够使用低成本的低成本的励磁变压器或用于产生作为系统输入电压的函数的中间电路电压的系统耦合变压器的三次或补偿绕组，在励磁变压器和 辅助变压器。 在由串联电容器和感性电阻组成的谐振电路中，连接到这些电容器之间的抽头，并且可以通过交流开关来切换和切换，产生提供给辅助的初级绕组的抽头电压 变压器。 在与辅助变压器的相导体串联连接的次级绕组中，产生叠加在系统输入电压上并产生所需相移的辅助电压。 除了可以关闭的空气扼流圈之外，还可以使用铁磁芯扼流圈或变压器的阻抗，其次级绕组可以通过交流开关短路，也可以用作变压器 谐振电路。 感应电阻也可以是星形连接，而不是三角形连接。

公开(公告)号：US4760485A

公开(公告)日：1988-07-26

申请号：US819059

申请日：1986-01-15

申请人： Niyazi Ari ,  Diethard Hansen ,  Hendrik Hoitink ,  Hans Schar

发明人： Niyazi Ari ,  Diethard Hansen ,  Hendrik Hoitink ,  Hans Schar

IPC分类号： H01C7/10 ,  H01G4/018 ,  H01G4/10 ,  H01G4/12 ,  H02H9/00 ,  H02H9/04 ,  H03H7/09

CPC分类号： H02H9/04 ,  H02H9/005

摘要： Zinc oxide surge arresters are used to replace capacitive elements for voltages below the pick-up voltage of the surge arrester. Advantageously, the surge arresters may be provided in an alternating current network to provide a high degree of protection against transient disturbances without increasing cost.

摘要翻译： 氧化锌避雷器用于替代低于避雷器的拾取电压的电压的电容元件。 有利地，避雷器可以设置在交流网络中，以提供高度的防止瞬时干扰的保护而不增加成本。

公开(公告)号：US4737708A

公开(公告)日：1988-04-12

申请号：US828900

申请日：1986-02-13

申请人： Niyazi Ari ,  Diethard Hansen ,  Hans Schar

发明人： Niyazi Ari ,  Diethard Hansen ,  Hans Schar

IPC分类号： G01R31/12 ,  G01R31/00 ,  G01R31/16 ,  G01R1/04

CPC分类号： G01R31/16 ,  G01R31/001

摘要： A gas-filled test cell is used which accommodates the object under test and to which a pulse generator is connected. The test cell is constructed over its entire length as a coaxial line having a ribbon-shaped inner conductor and a round outer conductor. A ribbon-shaped potential plate connected to the outer conductor is arranged plane-parallel to the inner conductor inside the outer conductor at a distance corresponding to at least twice the height of the object under test. The distance is also longer than the shortest distance between the inner conductor and the outer conductor. The ratio between the sum of the width of the inner conductor and its thickness and the diameter of the outer conductor has been selected in such a manner that is between 0.4 and 0.9.

摘要翻译： 使用充满气体的测试电池，其容纳被测物体并连接脉冲发生器。 测试电池在其整个长度上构造为具有带状内导体和圆形外导体的同轴线。 连接到外部导体的带状电位板被布置成平行于外部导体内部的内部导体，其距离对应于被测试物体的高度的至少两倍。 距离也比内导体和外导体之间的最短距离长。 内部导体的宽度和其厚度之和与外部导体的直径之间的比率已经以0.4和0.9之间的方式来选择。