Systems and methods for identifying faulted segments in multiphase power networks

    公开(公告)号:US10514412B2

    公开(公告)日:2019-12-24

    申请号:US15174687

    申请日:2016-06-06

    Applicant: ABB Inc.

    Abstract: Systems and methods for identifying faulted segment(s) in a multiphase power network may include receiving a current measurement that was measured during a fault, obtaining a set of equivalent sequence impedances for the segments, building a set of sequence bus impedance matrices, selecting a segment, calculating coefficients for the segment based on the set of equivalent sequence impedances for the segment and the sequence bus impedance matrices, calculating an estimated per unit fault distance for the segment based at least partially on the current measurement and the coefficients, identifying the segment as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one, and repeating for each of the segments the calculating coefficients, calculating an estimated per unit fault distance, and identifying as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one.

    System and method for automated and semiautomated configuration of facility automation and control equipment

    公开(公告)号:US10237234B2

    公开(公告)日:2019-03-19

    申请号:US15293922

    申请日:2016-10-14

    Applicant: ABB Inc.

    Abstract: A system and method for configuring devices on a device network in communication with a router on a control network. An unconfigured device installed on the network receives a poll at a predetermined address from a router. The router receives a response to the poll from the unconfigured device, and requests identification of devices having a range of device object IDs and stores the MAC addresses of responding devices and the device object IDs. The unconfigured device is configured to have the proposed MAC address and device object ID.

    Method and apparatus for leakage monitoring for oil-immersed electrical transformers

    公开(公告)号:US10192677B2

    公开(公告)日:2019-01-29

    申请号:US14457768

    申请日:2014-08-12

    Applicant: ABB Inc.

    Abstract: The present invention comprises an apparatus and method for detecting a loss of oil from an oil-immersed transformer, based on fitting a transformer top-oil temperature model to online measurements in an iterative optimization process that yields fitted values for a first model parameter representing the top-oil temperature rise over ambient temperature and a second model parameter representing the oil time constant. Among the several advantages seen in the contemplated apparatus and method is the reduction in required instrumentation, whereby transformer oil leaks are indirectly detected without requiring pressure sensors or mechanical floats, although the presence of such sensors is not excluded by the teachings herein.

    SECURING AGAINST MALICIOUS CONTROL OF CIRCUIT BREAKERS IN ELECTRICAL SUBSTATIONS

    公开(公告)号:US20190006837A1

    公开(公告)日:2019-01-03

    申请号:US16107098

    申请日:2018-08-21

    Applicant: ABB Inc.

    Abstract: An example method for detecting and mitigating attacks on electric power substations comprises detecting a command to open or close a circuit breaker in the electric power substation. A modified extended substation model for the electric power substation is generated, based on the detected command and based on measurements in substation, where the modified extended substation model is a power flow model for the substation and for one or more directly connected neighboring substations. A power flow analysis is performed, using the modified extended substation model, to generate a predicted voltage for each of a plurality of nodes in the substation and in the one or more directly connected neighboring substations. Each predicted voltage is compared to a corresponding allowable voltage range, and execution of the command is blocked in response to determining that one or more of the voltages is outside the corresponding allowable voltage range.

    Gas lift assist for fossil fuel wells

    公开(公告)号:US09644462B2

    公开(公告)日:2017-05-09

    申请号:US13622066

    申请日:2012-09-18

    Applicant: ABB Inc.

    CPC classification number: E21B43/122

    Abstract: When a fossil fuel well is producing fossil fuel, lift gas injected into the well to bring the naturally occurring fluids in the well to the surface along with the fossil fuel and the plunger if the well has a plunger. An instrument is programmed to use the predetermined criteria to dynamically control the rate of injection of the lift gas into the well.

    Adjustable door assembly
    88.
    发明授权
    Adjustable door assembly 有权
    可调门组件

    公开(公告)号:US09502188B2

    公开(公告)日:2016-11-22

    申请号:US14921416

    申请日:2015-10-23

    Applicant: ABB Inc.

    Inventor: Liam Devine

    CPC classification number: H01H9/0207 H02B1/28 H02B1/38 H02B13/025

    Abstract: One or more apparatuses are provided for forming a seal between a circuit breaker and an enclosure. An adjustable door assembly includes an inner floating frame assembly positioned according to a floating configuration between a first external flange and a second external flange that connect to an enclosure door of an enclosure housing a circuit breaker. The inner floating frame assembly includes an inner floating frame and an inner floating box frame. An adjustable coupling is used to apply a force, between the inner floating frame and the inner floating frame box, to the inner floating box frame towards a front side of the circuit breaker to form a seal between the front side of the circuit breaker and the enclosure door. The seal may provide a barrier for mitigating arc flash, hazardous gases, material, and/or explosive force from escaping from a backside of the circuit breaker.

    Abstract translation: 提供一个或多个装置用于在断路器和外壳之间形成密封。 可调门组件包括内浮动框架组件,该内浮动框架组件根据浮动构型定位在第一外凸缘和第二外凸缘之间,第一外凸缘和第二外凸缘连接到容纳断路器的外壳的外壳门。 内部浮动框架组件包括内部浮动框架和内部浮动框架框架。 可调式联轴器用于将内部浮动框架和内部浮动框架框架之间的力施加到内部浮动框架框架朝向断路器的前侧,以在断路器的前侧和 封闭门。 密封件可以提供阻挡电弧闪光,有害气体,材料和/或从断路器背面逸出的爆炸力的屏障。

    MODULAR, MULTI-CHANNEL, INTERLEAVED POWER CONVERTERS
    89.
    发明申请
    MODULAR, MULTI-CHANNEL, INTERLEAVED POWER CONVERTERS 审中-公开
    模块化,多通道,交流电源转换器

    公开(公告)号:US20160329832A1

    公开(公告)日:2016-11-10

    申请号:US15211844

    申请日:2016-07-15

    Applicant: ABB Inc.

    Abstract: A multi-phase power converter includes two or more multi-phase, bi-directional, multi-level, switching power converter subcircuits, connected in parallel at respective AC and DC sides, so as to provide a multi-channel, bi-directional, multi-level configuration. The AC sides of the switching converter subcircuits are directly coupled to one another and to a multi-phase AC input via series interface reactors, and the DC sides of the switching converter subcircuits are directly connected to one another and to a common split-capacitor bank at each level of the multi-level outputs of the switching converter subcircuits. A control circuit is configured to selectively control one or more switching semiconductor devices in each of the switching converter subcircuits. In some embodiments, the control circuit includes a closed-loop zero-sequence controller and a zero-sequence generator configured to eliminate circulating current among the switching converter subcircuits and to balance voltages across levels of the common split-capacitor bank.

    Abstract translation: 多相功率转换器包括两个或更多个在相应的AC和DC侧并联连接的多相,双向,多电平的开关功率转换器子电路,以便提供多通道,双向, 多级配置 开关转换器子电路的AC侧通过串联接口电抗器彼此直接耦合到多相交流输入,并且开关转换器子电路的DC侧直接连接到公共分离电容器组 在开关转换器子电路的多电平输出的每个电平处。 控制电路被配置为选择性地控制每个开关转换器子电路中的一个或多个开关半导体器件。 在一些实施例中,控制电路包括闭环零序控制器和零序发生器,该零序发生器被配置为消除开关转换器子电路之间的循环电流并平衡跨公共分离电容器组的电平的电压。

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