| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | 发电机断路器的同步开路方法及其控制设备 | CN00134288.6 | 2000-11-30 | CN1298191A | 2001-06-06 | 难波茂昭; 宇田宪吾; 深井雅之 |
| 本发明提供一种发电机断路器同步开路的方法及其控制装置,提供一种将发电机励磁电流控制包含到控制机构中的构造。能预测很多周期电流不通过电流零点现象的出现,利用涵盖造成这种现象的电气故障的单个元件的发电机闭锁继电器或者在该电路中集成所有那些元件,通过定时器有意造成时间延迟以便防止这种现象的同步性。一旦通过计算能预测这种现象,则增大发电机的无功功率输出,从而增大可靠发电机的AC电流幅度以便消除这种现象。 | ||||||
| 22 | 压气式断路器 | CN94104303.7 | 1994-04-19 | CN1052331C | 2000-05-10 | 渡边笃司; 大下阳一; 大野政智; 筑紫正范; 德山俊二 |
| 第一压气室(2)由基本为圆筒形法兰部件构成的压气缸(11)和轴件(1)和固定安装的活塞所形成，该活塞为圆筒形，相对于外部空间密封安装，其结构适于夹入断路单元(4，5)的断开位置时的压气缸(11)的法兰内，该活塞的内部空间构成一个第二压气(10)，它与第一压气室(2)相通。因此，容纳在第二压气室(10)内的气体连续地喷向触头区，从而有效地延长了遮断电弧时间间隔，同时并未增大断路机构和操作机构的尺寸。 | ||||||
| 23 | 能够遮断延迟过零的故障电流的高压断路器 | CN94117089.6 | 1994-10-12 | CN1043386C | 1999-05-12 | 乔斯林·特朗布雷; 瑞讷·多彻; 安德烈·李弗朗西斯 |
| 一种高压断路器，能够遮断准周期为T并延迟过零的交流故障电流，在故障发生瞬时t0后的最大时间推移tZ·max-t0之后，所述电流过零，通过模拟或通过测试确定所述时间推移tZ·max-t0，该断路器包含若干串联的遮断小室(1)，该遮断小室(1)装有使其在接续故障瞬时t0的某一瞬时t1处打开，并装有设计成在瞬时t1和比瞬时tZ·max-T稍早的瞬时tc之间工作的吹弧装置。它包含吹气流速降低装置，用于使吹气延长到介于tZ·max-T和tZ·max+T范围之中的某一瞬间t2。 | ||||||
| 24 | POWER SWITCHGEAR | US13818837 | 2011-10-06 | US20130146565A1 | 2013-06-13 | Yuta Nakayama; Tomotaka Yano; Taehyun Kim |
| A vacuum valve includes a fixed side electrode on a fixed side current-carrying shaft and a movable side electrode on a movable side current-carrying shaft. An opening and closing unit is coaxially disposed with the movable side current-carrying shaft, and drives the movable side current-carrying shaft. A chattering suppression structure is coaxially disposed with the fixed side current-carrying shaft on the fixed side of the vacuum valve, and suppresses chattering. The opening and closing unit includes an electromagnetic operating mechanism which drives the movable side current-carrying shaft when energized. A contact pressure spring is coaxially disposed with the electromagnetic operating mechanism, and applies contact pressure between the movable side electrode and the fixed side electrode during contact closing of the vacuum valve. A release spring is coaxially disposed with the electromagnetic operating mechanism, and assists driving force of the electromagnetic operating mechanism during contact opening of the vacuum valve. | ||||||
| 25 | Method and apparatus for disconnection of a fault current which has occured in an AC power supply system | US11593068 | 2006-11-06 | US20080019063A1 | 2008-01-24 | Lorenz Muller; Michael Stanek |
| A method and an apparatus are disclosed for disconnection of a fault current which has occurred in an AC power supply system. A disconnection command which is produced in a protective device is supplied to a synchronization controller in order to open a circuit breaker, in which synchronization controller a command is delayed until the circuit breaker can be opened in synchronism with the power supply system. The method includes monitoring of the disconnection command emitted from the protective device and monitoring a fault-current signal, or a status signal emitted from the circuit breaker, and formation of an emergency disconnection command if the fault-current signal or the status signal is still present following a delay time after emission of the disconnection command, which delay time is greater than a sum of a natural response time of the circuit breaker and a time for quenching of a switching arc produced on opening of the circuit breaker. | ||||||
| 26 | Method and an apparatus for controlling an electric switching device | US10297403 | 2001-06-07 | US07166936B2 | 2007-01-23 | Per Larsson; Magnus Backman; Lars Jonsson |
| An apparatus for controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave. | ||||||
| 27 | Actuation and control device for electric switchgear | US10030684 | 2002-05-20 | US06750567B1 | 2004-06-15 | Enrico Elli; Carlo Gemme; Giandomenico Testi |
| An actuation and control device for opening and/or closing an electric switchgear which is connected to an electrical network and has at least one fixed contact and at least one movable contact. The actuation and control device includes an actuator operatively connected to the movable contact to supply the energy to perform opening/closing operations. A measuring mechanism detects the voltage and/or the current of at least one of the phases of the network. The actuator includes a motor with position control, which is operatively connected to the movable contact, and an electronic control and power supply unit which receives information from the measuring mechanism and, following an operation command, sends to the motor electrical signals for driving the motor so that the movement of the movable contact is controlled in relation to a predetermined operation time and to the received information. | ||||||
| 28 | Method of synchronous circuit opening of generator circuit breaker, and its control apparatus | US09722550 | 2000-11-28 | US06501628B1 | 2002-12-31 | Shigeaki Namba; Kengo Uda; Masayuki Fukai |
| To provide a method of synchronous circuit opening of generator circuit breaker and its control apparatus that can protect a sound generator system of a generator main circuit from a phenomenon that current may not pass through current zero for many cycles. There is provided a construction where a generator exciting current control is incorporated into a control mechanism. In case that an occurrence possibility of a phenomenon that current may not pass through current zero for many cycles can be anticipated, time delay is intentionally caused by timer so as to prevent synchronism of the phenomenon, using an output signal of a generator lock-out relay which covers individual element of an electrical fault causing the phenomenon or in which circuit all those elements are integrated. In case that the phenomenon can be anticipated by calculation, a reactive power output of a generator is increased and consequently AC current amplitude of a sound generator is increased so as to eliminate the phenomenon. | ||||||
| 29 | High tension circuit breaker capable of interrupting fault currents having a delayed zero crossing | US320743 | 1994-10-11 | US5510591A | 1996-04-23 | Jocelyn Tremblay; Rene Doche; Andre LeFrancois |
| The invention relates to a high tension circuit breaker capable of interrupting alternating fault currents which have a pseudo period T. The faults occur at an instant t.sub.0 and delay the zero crossing of the current after a maximum time lapse of t.sub.zmax -t.sub.0. The circuit breaker includes a plurality of interrupting chambers in series. These chambers open at an instant t.sub.1 which is subsequent to the fault instant t.sub.0 and include moving equipment and an arc blaster. The arc blaster operates between instant t.sub.1 and instant t.sub.c, where instant t.sub.c is earlier than the instant t.sub.zmax -T. The circuit breaker also includes a feature which causes blasting to be extended to an instant t.sub.2 lying in the range t.sub.zmax -T and t.sub.zmax +T. | ||||||
| 30 | Pretriggering apparatus for a synchronous circuit breaker | US30702272 | 1972-11-16 | US3808455A | 1974-04-30 | LEISI B |
| A pretripping apparatus for generating a trigger pulse for initiating the opening of a synchronous circuit breaker to interrupt current (i1) is disclosed. The apparatus includes a measuring circuit arrangement that receives a first voltage (u1) proportional to the current (i1) and a second voltage (u2) proportional to the derivative of the current with respect to time (di1/dt). With these voltages the measuring circuit arrangement measures a time interval Delta tox extending from the zero cross-over of the second voltage to a point in time tx whereat the zero cross-over of the sum of the first voltage and the second voltage occurs, and forms a third voltage corresponding to the time interval. Another circuit receives the third voltage and generates the trigger pulse after a second time interval Delta txv, the last-mentioned time interval being dependent upon the measured time interval Delta tox.
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| 31 | Synchronous switching device | US55750566 | 1966-06-14 | US3402324A | 1968-09-17 | FRITZ KESSELRING; BRUNO LEISI |
| 32 | Control apparatus for alternating current | US75449847 | 1947-06-13 | US2531443A | 1950-11-28 | FRITZ KESSELRING |
| 33 | ARRANGEMENT, SYSTEM, AND METHOD OF INTERRUPTING CURRENT | US15394858 | 2016-12-30 | US20170178844A1 | 2017-06-22 | Lennart ÄNGQUIST; Staffan NORRGA |
| An arrangement for interrupting current comprises a first and a second terminal. First, second, and third parallel circuit branches are arranged between the terminals to electrically connect two power networks. The first parallel circuit branch comprises a mechanical main circuit breaker, the second parallel circuit branch comprises an energy absorbing device, and the third parallel circuit branch comprises a resonant circuit and a voltage control means arranged in series. The voltage control means is controllable to inject energy into the resonant circuit to force a rapid increase of alternating current, wherein the alternating current flows in a loop containing the first and the third parallel circuit branches as the mechanical main circuit breaker is controlled to open to interrupt main current. Zero cross-over of the current through the mechanical main circuit breaker is thereby realized as the alternating current amplitude exceeds the main current amplitude. | ||||||
| 34 | Apparatus arranged to break an electrical current | US14422817 | 2012-08-27 | US09148011B2 | 2015-09-29 | Jesper Magnusson; Lars Liljestrand; Robert Saers |
| An apparatus is arranged to break an electrical current. The apparatus includes: a mechanical switch leg including a first winding of a mutual inductor and a mechanical switch connected in series; a semiconductor switch leg including a second winding of the mutual inductor and a semiconductor switch connected in series; and an overvoltage protection circuit. The mechanical switch leg and the semiconductor switch leg are connected in parallel and a self inductance of the second winding is lower than a self inductance of the first winding. A corresponding DC circuit breaker and AC current limiter are also presented. | ||||||
| 35 | APPARATUS ARRANGED TO BREAK AN ELECTRICAL CURRENT | US14422817 | 2012-08-27 | US20150222111A1 | 2015-08-06 | Jesper Magnusson; Lars Liljestrand; Robert Saers |
| An apparatus is arranged to break an electrical current. The apparatus includes: a mechanical switch leg including a first winding of a mutual inductor and a mechanical switch connected in series; a semiconductor switch leg including a second winding of the mutual inductor and a semiconductor switch connected in series; and an overvoltage protection circuit. The mechanical switch leg and the semiconductor switch leg are connected in parallel and a self inductance of the second winding is lower than a self inductance of the first winding. A corresponding DC circuit breaker and AC current limiter are also presented. | ||||||
| 36 | Method and apparatus for disconnection of a fault current which has occurred in an AC power supply system | US11593068 | 2006-11-06 | US07450362B2 | 2008-11-11 | Lorenz Müller; Michael Stanek |
| A method and an apparatus are disclosed for disconnection of a fault current which has occurred in an AC power supply system. A disconnection command which is produced in a protective device is supplied to a synchronization controller in order to open a circuit breaker, in which synchronization controller a command is delayed until the circuit breaker can be opened in synchronism with the power supply system. The method includes monitoring of the disconnection command emitted from the protective device and monitoring a fault-current signal, or a status signal emitted from the circuit breaker, and formation of an emergency disconnection command if the fault-current signal or the status signal is still present following a delay time after emission of the disconnection command, which delay time is greater than a sum of a natural response time of the circuit breaker and a time for quenching of a switching arc produced on opening of the circuit breaker. | ||||||
| 37 | Method and an apparatus for controlling an electric switching device | US10297403 | 2003-04-07 | US20040090720A1 | 2004-05-13 | Per Larsson; Magnus Backman; Lars Jonsson |
| An apparatus for a controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave. | ||||||
| 38 | Power system device and method for actively interrupting fault current before reaching peak magnitude | US862983 | 1997-05-23 | US5854729A | 1998-12-29 | Robert C. Degeneff; Moises R. Gutierrez; Mietek T. Glinkowski |
| A device/method for actively interrupting fault current in an ac or dc power system before the fault current is capable of growing to peak magnitude or steady state condition, respectively, is presented. In an ac implementation, a commutating capacitance of desired polarity from one of two commutating circuits is coupled across a circuit interrupter comprising a pair of separable contacts. The circuit interrupter operates to open circuit the power system upon reaching zero current therethrough. The commutating capacitance of appropriate polarity actively drives the fault current to zero before the fault current reach peak magnitude, thereby allowing the circuit interrupter to open circuit the power system before the fault current's natural current zero. In dc implementation, the commutating capacitance is connected to dissipate a fault current while the system is in transient state, thereby protecting the power system from full steady state fault current condition. In both ac and dc implementations, the circuit interrupter is resettable upon clearing of a fault condition. The circuit interrupter can comprise a vacuum interrupter, a silicon-controlled rectifier or a thyristor. The approach is applicable to single phase or three-phase power systems. | ||||||
| 39 | Hybrid circuit-breaker for interrupting currents having high dc components | US977287 | 1992-11-16 | US5296661A | 1994-03-22 | Van Doan Pham; Robert Jeanjean; Armand Scarato; Jean-Pierre Arandel |
| A hybrid circuit-breaker for interrupting currents having high DC components, said hybrid circuit-breaker comprising a compressed-air circuit-breaker that re-closes automatically, and a sulfur hexafluoride circuit-breaker, the circuit-breakers being disposed in series. | ||||||
| 40 | Synchronized switch with parallel contact | US470990 | 1974-05-17 | US3935509A | 1976-01-27 | Adolf Eidinger |
| A switching arrangement located in the vicinity of and connected to an alternating current generator for disconnecting the generator under load and particularly under short-circuit current conditions includes a first switch connected to the generator and whose contacts are designed for carrying normal load current therefrom in a continuous manner. A second switch of the synchronized type whose contacts operate at high speed and are made comparatively less massive than those of the first switch is connected in parallel with the latter and is arranged to open its contacts subsequent to an opening operation of the contacts of the first switch. An ohmic resistor is connected in the current flow path through the second switch and its resistance is at most a 0.2 fold and preferably a 0.1 fold value of the sub-transient short-circuit impedance of the generator in order to facilitate the final switching out at the contacts of the second switch. | ||||||
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