Arrangements to detect and respond to disturbances in electrical power systems

    公开(公告)号:US06601002B1

    公开(公告)日:2003-07-29

    申请号:US09556257

    申请日:2000-04-24

    IPC分类号: G01R2100

    摘要: A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When the integration exceeds a predetermined value, the source is considered unreliable. Also in a preferred arrangement, a determination is made as to whether or not the disturbance is a downstream fault condition. For example, this is useful for applications where a transfer is made from a first source to a second source when predetermined disturbances are detected. In this manner, the transfer of the load to a second source is avoided which would continue the supply of the downstream fault. Additionally, the arrangement distinguishes between various degrees of disturbances to permit appropriate response based on the severity and type of disturbance. For example, a first immediate response, i.e. without intentional delay, is provided for more severe disturbances while a second delayed response is provided for less severe disturbances. The control arrangements transfers the load to an alternate source of power via the use of a high-speed source-transfer switching system that both avoids undesirable current flow between sources and minimizes undesirable transfer delays.

    Control circuit for a circuit interrupter
    2.
    发明授权
    Control circuit for a circuit interrupter 失效
    电路断路器的控制电路

    公开(公告)号:US4916573A

    公开(公告)日:1990-04-10

    申请号:US223742

    申请日:1988-07-15

    申请人: Joseph W. Ruta

    发明人: Joseph W. Ruta

    IPC分类号: H02H3/093 H02H3/44

    CPC分类号: H02H3/093 H02H3/44

    摘要: A control circuit is provided for a circuit interrupter that achieves an inverse-time characteristic for overcurrents that include instantaneous current levels higher than the interrupting capability of the circuit interrupter by synchronizing the operation of the circuit interrupter to ensure that circuit interruption takes place when the instantaneous current is within the interrupting capability of the circuit interrupter. This interrupting capability is similar to let-through current and is defined by the instantaneous magnitude of the current at the time of interruption or at a particular stage thereof. The control circuit is responsive to a time-current characteristic signal generator that provides a time-current signal in response to overcurrent after the passage of a time delay that is inversely related to the overcurrent. The control circuit utilizes the time-current signal to permit asynchronous operation of the circuit interrupter when the peak of the overcurrent is expected to be within the interrupting capabilities of the circuit interrupter and to control operation of the circuit interrupter in a manner synchronized with the overcurrent when the peak of the overcurrent is expected to exceed the interrupting capabilities of the circuit interrupter; the interruption in the synchronized manner being arranged to occur when the instantaneous current is within the interrupting capabilities of the circuit interrupter. If such overcurrents are predicted, the rate of change of the current and the instantaneous current being within a predetermined current range are utilized to synchronize operation of the circuit interrupter.

    摘要翻译: 为电路断续器提供控制电路,其通过使电路断续器的操作同步来实现包括高于电路断续器的中断能力的瞬时电流水平的过电流的反时限特性,以确保当瞬时电流发生电路中断时 电流在电路断续器的中断能力之内。 该中断能力类似于通过电流,并且由中断时的电流的瞬时幅度或其特定阶段来定义。 控制电路响应时间 - 电流特性信号发生器,该时间电流特性信号发生器响应于与过电流成反比的时间延迟通过后的过电流而提供时间电流信号。 当过电流的峰值预期在电路断续器的中断能力内并且以与过电流同步的方式控制电路断续器的操作时,控制电路利用时间电流信号来允许电路断续器的异步操作 当过电流的峰值预计超过断路器的中断能力时; 当瞬时电流处于电路断续器的中断能力之内时,同步方式的中断被布置为发生。 如果预测出这种过电流,则利用电流的变化率和在预定电流范围内的瞬时电流来同步电路断续器的操作。

    Arrangements to detect and respond to disturbances in electrical power systems

    公开(公告)号:US06950764B2

    公开(公告)日:2005-09-27

    申请号:US10647741

    申请日:2003-08-26

    摘要: A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When the integration exceeds a predetermined value, the source is considered unreliable. Also in a preferred arrangement, a determination is made as to whether or not the disturbance is a downstream fault condition. For example, this is useful for applications where a transfer is made from a first source to a second source when predetermined disturbances are detected. In this manner, the transfer of the load to a second source is avoided which would continue the supply of the downstream fault. Additionally, the arrangement distinguishes between various degrees of disturbances to permit appropriate response based on the severity and type of disturbance. For example, a first immediate response, i.e. without intentional delay, is provided for more severe disturbances while a second delayed response is provided for less severe disturbances. The control arrangements transfers the load to an alternate source of power via the use of a high-speed source-transfer switching system that both avoids undesirable current flow between sources and minimizes undesirable transfer delays.

    Arrangements to detect and respond to disturbances in electrical power systems

    公开(公告)号:US06668232B2

    公开(公告)日:2003-12-23

    申请号:US10387253

    申请日:2003-03-12

    IPC分类号: G01R2100

    摘要: A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When the integration exceeds a predetermined value, the source is considered unreliable. Also in a preferred arrangement, a determination is made as to whether or not the disturbance is a downstream fault condition. For example, this is useful for applications where a transfer is made from a first source to a second source when predetermined disturbances are detected. In this manner, the transfer of the load to a second source is avoided which would continue the supply of the downstream fault. Additionally, the arrangement distinguishes between various degrees of disturbances to permit appropriate response based on the severity and type of disturbance. For example, a first immediate response, i.e. without intentional delay, is provided for more severe disturbances while a second delayed response is provided for less severe disturbances. The control arrangements transfers the load to an alternate source of power via the use of a high-speed source-transfer switching system that both avoids undesirable current flow between sources and minimizes undesirable transfer delays.

    Power supply for a circuit interrupter
    6.
    发明授权
    Power supply for a circuit interrupter 失效
    断路器电源

    公开(公告)号:US4567540A

    公开(公告)日:1986-01-28

    申请号:US506944

    申请日:1983-06-22

    申请人: Joseph W. Ruta

    发明人: Joseph W. Ruta

    IPC分类号: H02H1/06 H02H3/08

    CPC分类号: H02H1/066

    摘要: A power supply is provided for energizing a trip signal generator and for selectively operating a device in response to the detection by the trip signal generator of overcurrent in a alternating current line. The power supply receives input of full-wave rectified current that is directly proportional to the alternating current in the line. A regulator circuit is also provided to power the trip signal generator and other circuitry. When current initially flows in the line the regulator rapidly produces an output voltage approximately equal to the input voltage up to a first voltage level. When the input voltage exceeds that level, the output voltage of the regulator increases at a slower rate than the input voltage to permit regulation of the output voltage. When energized, the output voltage is regulated at a predetermined constant level. The power supply also includes an energy storage circuit for supplying the input voltage to the regulator and to a circuit interrupter when desired. A control portion in conjunction with a switch portion alternately shunts current away from or permits current to flow to the energy storage portion and regulator portion to maintain the voltage across the energy storage portion within a predetermined range. The predetermined voltage range of the energy storage circuit is shifted higher upon receipt of a signal from the trip signal generator to increase the amount of energy stored in the energy storage circuit for interrupting the circuit in the line.

    摘要翻译: 提供电源,用于激励跳闸信号发生器,并响应于跳闸信号发生器在交流电线中的过电流的检测来选择性地操作设备。 电源接收与该线路中的交流电成正比的全波整流电流的输入。 还提供调节器电路以为跳闸信号发生器和其它电路供电。 当电流最初在线路中流动时,调节器迅速产生大致等于第一电压电平的输入电压的输出电压。 当输入电压超过该电平时,调节器的输出电压以比输入电压慢的速率增加,以允许调节输出电压。 当通电时,输出电压被调节在预定的恒定水平。 电源还包括用于在需要时将输入电压提供给调节器和断路器的能量存储电路。 结合开关部分的控制部分将电流交替地分流或者允许电流流向能量存储部分和调节器部分,以将能量存储部分两端的电压保持在预定范围内。 能量存储电路的预定电压范围在接收到来自跳闸信号发生器的信号时移动得更高,以增加存储在能量存储电路中的能量,用于中断线路中的电路。

    Arrangements to detect and respond to disturbances in electrical power systems
    8.
    发明授权
    Arrangements to detect and respond to disturbances in electrical power systems 有权
    检测和应对电力系统扰动的安排

    公开(公告)号:US06944004B2

    公开(公告)日:2005-09-13

    申请号:US10641267

    申请日:2003-08-15

    摘要: A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When the integration exceeds a predetermined value, the source is considered unreliable. Also in a preferred arrangement, a determination is made as to whether or not the disturbance is a downstream fault condition. For example, this is useful for applications where a transfer is made from a first source to a second source when predetermined disturbances are detected. In this manner, the transfer of the load to a second source is avoided which would continue the supply of the downstream fault. Additionally, the arrangement distinguishes between various degrees of disturbances to permit appropriate response based on the severity and type of disturbance. For example, a first immediate response, i.e. without intentional delay, is provided for more severe disturbances while a second delayed response is provided for less severe disturbances. The control arrangements transfers the load to an alternate source of power via the use of a high-speed source-transfer switching system that both avoids undesirable current flow between sources and minimizes undesirable transfer delays.

    摘要翻译: 提供了一种用于检测和响应电力系统中的干扰的控制装置和方法。 在优选的布置中,开始基于源的实际电压和参考电压的比较的积分。 当积分超过预定值时,源被认为是不可靠的。 同样在优选的布置中,确定干扰是否是下游故障状况。 例如,当检测到预定的干扰时,这对于从第一源到第二源进行传送的应用是有用的。 以这种方式,避免了将负载转移到第二源,这将继续供应下游故障。 另外,这种布置根据干扰的严重程度和类型来区分各种扰动程度以允许适当的响应。 例如,提供第一即时响应,即没有有意的延迟,用于更严重的干扰,而为不太严重的干扰提供第二延迟响应。 控制装置通过使用高速的源 - 转移开关系统将负载转移到备用电源,这两个系统避免了源之间不期望的电流流动,并使不期望的传输延迟最小化。

    Control arrangement and method for power electronic system

    公开(公告)号:US06667601B2

    公开(公告)日:2003-12-23

    申请号:US10192441

    申请日:2002-07-11

    IPC分类号: G05F140

    CPC分类号: H02J3/005

    摘要: A control arrangement and method is provided that monitors the condition and operating parameters of a power electronic system having power electronic devices and responds to various detected abnormalities via appropriate action to optimize operation of the power electronic system. The arrangement increases reliability of operation and optimizes the continuous supply of power to a load. For example, the arrangement responds to an overheated power electronic switch by switching to an alternate power electronic switch, the overheated power electronic switch being made available as a temporary alternate path. The arrangement also includes the capability for diagnosing the power electronic switches by measuring the temperature of the power electronics switches and communicating the temperature information in a coordinated fashion with information regarding the operating status of the power electronics switches. Additionally, shorted power electronic switches are detected and appropriate action taken.

    Control arrangement and method for power electronic system
    10.
    发明授权
    Control arrangement and method for power electronic system 失效
    电力电子系统的控制布置和方法

    公开(公告)号:US06504696B1

    公开(公告)日:2003-01-07

    申请号:US09556259

    申请日:2000-04-24

    IPC分类号: H02H300

    CPC分类号: H02J3/005

    摘要: A control arrangement and method is provided that monitors the condition and operating parameters of a power electronic system having power electronic devices and responds to various detected abnormalities via appropriate action to optimize operation of the power electronic system. The arrangement increases reliability of operation and optimizes the continuous supply of power to a load. For example, the arrangement responds to an overheated power electronic switch by switching to an alternate power electronic switch, the overheated power electronic switch being made available as a temporary alternate path. The arrangement also includes the capability for diagnosing the power electronic switches by measuring the temperature of the power electronics switches and communicating the temperature information in a coordinated fashion with information regarding the operating status of the power electronics switches. Additionally, shorted power electronic switches are detected and appropriate action taken.

    摘要翻译: 提供一种控制装置和方法,其监视具有电力电子装置的电力电子系统的状态和操作参数,并通过适当的动作来响应各种检测到的异常,以优化电力电子系统的操作。 该装置提高了操作的可靠性,并优化了对负载的连续供电。 例如,该布置通过切换到备用电力电子开关来响应过热的电力电子开关,过热的电力电子开关可用作临时替代路径。 该装置还包括通过测量电力电子开关的温度并以协调的方式与关于电力电子开关的操作状态的信息传达温度信息来诊断功率电子开关的能力。 此外,检测到短路电力电子开关,并采取适当的措施。