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21. 发明授权

US3947725A Protective system for a capacitor voltage transformer 失效
标题翻译：电容变压器保护系统
公开(公告)号：US3947725A
公开(公告)日：1976-03-30
申请号：US413395
申请日：1973-11-06
申请人： Howard R. Lucas
发明人： Howard R. Lucas
IPC分类号： H02H7/05 , H03M13/51 , H02H7/16
CPC分类号： H02P13/00 , H02H7/05 , H03M13/51
摘要： Capacitive voltage transformers for measurement of voltage for metering and protective relay purposes on high voltage power transmission systems including a protective system therefor which consists of modifying the inductive value of the inductance in the circuit in response to a condition of the circuit which is abnormal to the normal operation thereof. The inductive value is varied, in one instance, by short circuiting the winding thereof, short circuiting occurring through the use of a triggering device operated in response to an over-voltage in the system. In another instance, the inductive value is varied by providing a further coil magnetically coupled to the inductance and which further coil is energized upon triggering of a device in circuit therewith upon abnormal operating conditions of the line in response to such abnormal condition.
摘要翻译：用于测量用于计量和保护继电器的电压的电容式电压互感器，用于包括其保护系统在内的高压输电系统，其包括根据电路异常的电路状态修改电路中的电感值正常操作。感应值在一种情况下是变化的，通过使其绕组短路，通过使用响应于系统中的过电压而操作的触发装置而发生短路。在另一种情况下，通过提供磁耦合到电感的另一个线圈来改变感应值，并且当响应于这种异常状态的线路的异常操作条件触发与其电路中的装置时，进一步的线圈被激励。

22. 发明授权

US3870926A Capacitor voltage transformer system 失效
标题翻译：电容式电压互感器系统
公开(公告)号：US3870926A
公开(公告)日：1975-03-11
申请号：US38880473
申请日：1973-08-16
申请人： ENGLISH ELECTRIC CO LTD
发明人： HUGHES MICHAEL ALAN
IPC分类号： G01R15/06 , H02H3/20 , H02H7/05 , H02H7/16
CPC分类号： G01R15/06 , H02H3/20 , H02H7/05
摘要： A system for monitoring very high voltage e.g., 100 kv and above is provided in which a capacitor chain is connected across the voltage. An electromagnetic transformer feeding slow responding circuits is connected across the capacitor at the lower potential and of the chain. An additional impedance, preferably a capacitor, is connected in the chain and a buffer amplifier feeding fast responding circuits is connected across this additional impedance.
摘要翻译：提供了用于监测例如100kv及以上的非常高的电压的系统，其中电容器链跨过电压连接。馈电慢响应电路的电磁变压器在较低电位和链条的电容器两端连接。在链中连接附加阻抗，优选电容器，并且馈送快速响应电路的缓冲放大器连接在该附加阻抗上。

23. 发明授权

US3517263A Capacitor voltage transeormer 失效
标题翻译：电容式电压调节器
公开(公告)号：US3517263A
公开(公告)日：1970-06-23
申请号：US3517263D
申请日：1967-05-31
申请人： NISSIN ELECTRIC CO LTD
发明人： OKAMURA TOSHIO , IZUMI SIGEVA , WATANABE ISAO
IPC分类号： H02H7/05 , H02H7/00 , H02H7/14 , H02H7/16
CPC分类号： H02H7/05

24. 发明授权

US3106651A Device for suppressing fundamental and subharmonic ferromagnetic oscillations in alternating current circuits 失效
标题翻译：用于抑制交流电路中基本和次谐波铁磁振荡的装置
公开(公告)号：US3106651A
公开(公告)日：1963-10-08
申请号：US70115857
申请日：1957-12-06
申请人： ERICSSON TELEFON AB L M
发明人： HUGO HAGGLUND KJELL , GEORG WESTERLUND ERIK , ALEXIS PEURON UNTO
IPC分类号： H02H7/05
CPC分类号： H02H7/05

25. 发明申请

WO2014019677A1 RELIABLE DEVICE FOR PROTECTION OF VOLTAGE TRANSFORMERS 审中-公开
标题翻译：用于保护电压变压器的可靠装置
公开(公告)号：WO2014019677A1
公开(公告)日：2014-02-06
申请号：PCT/EP2013/002248
申请日：2013-07-30
申请人： ABB TECHNOLOGY AG
发明人： PAVLAS, Marek , JAVORA, Radek , HONZAK, Ales
IPC分类号： H02H9/00 , H02H7/05
CPC分类号： H02H7/05 , H02H3/05 , H02H9/007
摘要： The invention relates to a reliable device for protection of voltage transformers from ferroresonant oscillation influences, with input terminals, power supply module, control unit, switching element and burden resistor. In order to enhance the operation of such protection device, each of the power supply module (2, 12), control unit (3, 13), switching element (4, 14) and burden resistor (5, 15) are arranged at least twice in parallel, in order to fulfill redundancy in each of its functions, and that the control unit operates the switching device, which is connected in series with the burden resistor connected in open-delta circuit of three single-phase voltage transformers.
摘要翻译：本发明涉及一种用于保护变压器免受铁共振振荡影响的可靠装置，具有输入端子，电源模块，控制单元，开关元件和负载电阻器。为了增强这种保护装置的操作，至少设置电源模块（2,12），控制单元（3,13），开关元件（4,14）和负载电阻（5,15）两次并联，以实现其功能中的冗余，并且控制单元操作与三个单相电压互感器的开放三角形电路中连接的负载电阻串联连接的开关装置。

26. 发明申请

WO1980001516A1 IMPROVEMENT RELATING TO VOLTAGE CAPACITIVE TRANSFORMERS 审中-公开
标题翻译：关于电压电容变压器的改进
公开(公告)号：WO1980001516A1
公开(公告)日：1980-07-24
申请号：PCT/FR1980000007
申请日：1980-01-22
申请人： ENERTEC SA , LE MAGUET D
发明人： ENERTEC SA
IPC分类号： G01R15/06
CPC分类号： H02H7/05 , G01R15/06
摘要： According to one embodiment, a voltage capacitive transformer (58) is provided with two capacitors (C1, C2) connected in series between a point of a high voltage line (62) and a reference point such as the earth (148) and two impedences (C3, C4) connected in series with the two capacitors. A medium voltage electromagnetic detector (95) is connected between the common point (94) of the two capacitors and the common point (145) of the two impedences. A voltage electronic detector (160) is connected to the terminals of the series circuit formed by the two impedences, the values of which are selected so that the instantaneous voltage across the terminals of the electronic detector is always a constant fraction of the voltage measured between the line and the reference point. Application to the control of fast static protections from a voltage capacitive transformer with medium voltage electromagnetic circuit.
摘要翻译：根据一个实施例，电压电容变压器（58）设置有两个电容器（C1，C2）串联连接在高压线路（62）的点和诸如地球（148）的参考点和两个阻抗（C3，C4）与两个电容串联。中压电磁检测器（95）连接在两个电容器的公共点（94）和两个阻抗的公共点（145）之间。电压电子检测器（160）连接到由两个阻抗形成的串联电路的端子，其值被选择为使得电子检测器两端的瞬时电压总是恒定地在线和参考点。应用于具有中压电磁电路的电压电容变压器的快速静电保护控制。

27. 发明公开

US20240072531A1 FERROMAGNETIC HARMONIC ELIMINATION METHOD FOR ACTIVE MATCHED RESISTANCE VOLTAGE TRANSFORMER BASED ON PID ADJUSTMENT 审中-公开
公开(公告)号：US20240072531A1
公开(公告)日：2024-02-29
申请号：US18451669
申请日：2023-08-17
申请人： Qujing Power Supply Bureau of Yunnan Power Grid Co., Ltd
发明人： Xiaohong ZHU , Lianjing YANG , Fei MAO , Rong ZHANG , Yang YANG , Jiangyun SU , Wenfei FENG , Zhe LI , Pengjin QIU , Jianbin LI , Zhikun HONG , Weirong YANG , Changjiu ZHOU , Yingqiong ZHANG , Rui XU , Guibing DUAN
IPC分类号： H02H7/05 , G05B11/42 , H01F27/34 , H02J3/01
CPC分类号： H02H7/05 , G05B11/42 , H01F27/343 , H02J3/01 , G06F17/16 , H02J2203/20
摘要： This invention relates to the technical field of harmonic elimination for ferromagnetic resonance for a voltage transformer (abbreviated as PT), in particular, to a harmonic elimination method for ferromagnetic resonance for an active resistance-matching voltage transformer based on PID-adjustment, including compiling a resistance matching algorithm; designing and building a harmonic elimination control system based on the PID control strategy; presetting an active resistance-matching strategy; designing an engineering scheme for placing resistors. The present invention can solve the contradiction between the standards of the harmonic elimination resistance and the winding overload in the open triangle of the voltage transformer when the single-phase ground fault occurs and the fault is eliminated; avoiding the technical difficulties that the characteristics of single-phase ground fault and power frequency resonance are difficult to distinguish and the ferromagnetic resonance caused by single-phase ground fault; ensuring that the voltage transformer PT is not overloaded and burned.

28. 发明授权

US4329638A Capacitive voltage transformers 失效
标题翻译：电容式电压互感器
公开(公告)号：US4329638A
公开(公告)日：1982-05-11
申请号：US214053
申请日：1980-09-23
申请人： Daniel Le Maguet
发明人： Daniel Le Maguet
IPC分类号： G01R15/06 , H02H7/05 , G05F1/60
CPC分类号： H02H7/05 , G01R15/06
摘要： The present invention refers to capacitive voltage transformers.In accordance with one embodiment a capacitive voltage transformer has two capacitors connected in series between a point on a high voltage line and a reference point such as earth and two impedances connected in series with the two capacitors.A medium voltage electromagnetic detector is connected between the common point of the two capacitors and the common point of the two impedances. An electronic voltage detector is connected to the terminals of the series circuit formed by the two impedances, the values of the latter being selected in order that the instantaneous voltage at the terminals of the electronic detector is always a constant fraction of the voltage taken off between the line and the reference point.Application to the operation of highspeed static protections from a capacitive voltage transformer having a medium voltage electromagnetic circuit.
摘要翻译： PCT No.PCT / FR80 / 00007 Sec。日期：1980年9月23日 102e日期：1980年9月19日PCT申请日：1980年1月23日 WO80 / 01516出版物日期：1980年7月24日。本发明涉及电容式电压互感器。根据一个实施例，电容式电压变压器具有串联连接在高压线路上的点和诸如地线的参考点和与两个电容器串联连接的两个阻抗的两个电容器。中压电磁检测器连接在两个电容器的公共点和两个阻抗的公共点之间。电子电压检测器连接到由两个阻抗形成的串联电路的端子，后者的值被选择为使得电子检测器的端子处的瞬时电压总是在线和参考点。适用于具有中压电磁电路的电容式电压互感器的高速静电保护操作。

29. 发明授权

US3969655A Protective circuit arrangement for capacitor voltage transformers 失效
标题翻译：电容电压互感器的保护电路装置
公开(公告)号：US3969655A
公开(公告)日：1976-07-13
申请号：US530425
申请日：1974-12-06
申请人： Georges-Albert Gertsch
发明人： Georges-Albert Gertsch
IPC分类号： H02H7/05 , H02H7/16
CPC分类号： H02H7/05
摘要： A protective circuit arrangement for a capacitor voltage transformer wherein a damping load is connected by switch means, following a voltage breakdown, to the secondary terminals of an intermediate transformer whose primary terminals are connected to the capacitor through a reactance coil.
摘要翻译：一种用于电容器电压互感器的保护电路装置，其中阻尼负载通过开关装置在电压击穿之后连接到中间变压器的次级端子，其中初级端子通过电抗线圈连接到电容器。

30. 发明授权

US3870927A Capacitor voltage transformer system 失效
标题翻译：电容式电压互感器系统
公开(公告)号：US3870927A
公开(公告)日：1975-03-11
申请号：US40348973
申请日：1973-10-04
申请人： ENGLISH ELECTRIC CO LTD
发明人： HUGHES MICHAEL ALAN
IPC分类号： G01R15/06 , H02H7/05 , H02H7/16
CPC分类号： H02H7/05 , G01R15/06
摘要： In a capacitor voltage transformer system consisting of a capacitor chain and an electromagnetic transformer, an impedance network having a transfer function which is the inverse of the transfer function between the input and the output of the CVT under operating conditions is connected across the output of the electro-magnetic transformer to obviate distortions produced in the output due to rapidly changing input conditions.
摘要翻译：在由电容器链和电磁变压器组成的电容器电压互感器系统中，具有与CVT的输入和输出之间的传递函数相反的传递函数的阻抗网络在操作条件下跨越电磁变压器，以避免由于输入条件的快速变化而在输出端产生的失真。

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