DETERMINATION AND USE OF POWER SYSTEM SENSITIVITIES
    11.
    发明申请
    DETERMINATION AND USE OF POWER SYSTEM SENSITIVITIES 有权
    电力系统敏感性的确定和使用

    公开(公告)号:US20100094477A1

    公开(公告)日:2010-04-15

    申请号:US12418362

    申请日:2009-04-03

    IPC分类号: G06F19/00

    摘要: The present disclosure relates to power system sensitivities as computed from power flow parameters and control parameters of a Power Flow Control Device (PFC). To this end, control parameter variations are applied to or generated by a PFC, and comprise variations in a control input u, a control effort e (injected series voltage, inserted series reactance), or a control effect q (power flow, active power transfer, phase-shift, current). A power flow response measuring unit measures a variation of a power flow response such as current, active or apparent power, in a way sufficiently synchronized with the control parameter variation to allow establishing an unambiguous causal relationship or correspondence in the form of a power system sensitivity. The latter may be on-line adapted to continuously reflect an updated aspect of the power system behaviour, and thus enable an improved, fast and reliable power flow control in power systems comprising a meshed power network with two parallel flow paths or corridors connecting two areas or sub-systems.

    摘要翻译: 本公开涉及根据功率流量参数和功率流量控制装置(PFC)的控制参数计算的电力系统灵敏度。 为此,控制参数变化应用于PFC或由PFC产生,并且包括控制输入u,控制工作e(注入的串联电压,插入的串联电抗)或控制效应q(功率流,有功功率) 转移,相移,电流)。 功率流响应测量单元以与控制参数变化充分同步的方式测量功率流响应(例如电流,有功或视在功率)的变化,以允许以电力系统灵敏度的形式建立明确的因果关系或对应关系 。 后者可以在线适应以连续反映电力系统行为的更新方面,并且因此能够在电力系统中实现改进的,快速和可靠的功率流控制,其包括具有两个平行流动路径的网状电力网络或连接两个区域的走廊 或子系统。

    Dissolving metal particles from supported catalyst using ultrasonic energy, solvent and etchant
    12.
    发明授权
    Dissolving metal particles from supported catalyst using ultrasonic energy, solvent and etchant 失效
    制备纳米颗粒样品进行表征的方法

    公开(公告)号:US07527771B1

    公开(公告)日:2009-05-05

    申请号:US11016578

    申请日:2004-12-17

    IPC分类号: C01B19/00

    摘要: A sample preparation method for characterization of nanoparticles embedded in the supports of heterogeneous catalysts, with improved particle dispersion, is introduced. The supported catalyst is first ground or milled into fine powder. Then, the powder is mixed into an organic solvent, and an etchant is added to the solvent to digest the supports and release metallic nanoparticles. The resulting solution is then placed in an ultrasonic bath where ultrasonic waves are generated and applied to the solution. The ultrasonic waves suppress agglomeration of the particles and also break up those particle clusters resulting from agglomeration during the prior steps. Subsequently, a sample is extracted from the solution and prepared for analysis.

    摘要翻译: 介绍了一种用于表征嵌入在非均相催化剂载体中的纳米颗粒的样品制备方法,其具有改进的颗粒分散性。 首先将负载型催化剂研磨或研磨成细粉末。 然后将粉末混合到有机溶剂中,并向溶剂中加入蚀刻剂以消化载体并释放金属纳米颗粒。 然后将所得溶液置于超声波浴中,产生超声波并将其施加到溶液。 超声波抑制颗粒的聚集,并且在前面的步骤中分解由聚集产生的颗粒簇。 随后,从溶液中提取样品并准备用于分析。

    Telescopic fork leg for a vehicle, preferably a motorcycle
    13.
    发明授权
    Telescopic fork leg for a vehicle, preferably a motorcycle 失效
    用于车辆的伸缩叉腿,优选摩托车

    公开(公告)号:US07255210B2

    公开(公告)日:2007-08-14

    申请号:US11087625

    申请日:2005-03-24

    IPC分类号: F16F9/512 F16F9/342

    CPC分类号: F16F9/342 F16F9/44 F16F9/512

    摘要: A telescopic fork leg incorporates mutually displaceable inner and outer tube parts and a damping arrangement for damping the relative movements of the tube parts. The damping arrangement comprises tubular and coaxially disposed units. A piston belonging to a first outer tube part operates in a chamber within the interior of the tubular units in a medium present in the chamber, which medium, at a piston speed above a chosen value, is transferred between the top and bottom sides of the piston via passage(s) disposed in, on or by the piston and adjustable damping-influencing members. The passage(s) is/are closed by the damping-influencing member(s) at piston speeds below the chosen value and the medium is conducted only via one or more leak flow paths extending from the chamber on one side of the piston, via a gap between the outside of the inner tubular unit and within a second tubular unit disposed outside the inner unit, one or more leak-flow-size-determining members, and back to the chamber on the other side of the piston. Independently adustable compression and the return leak flows can be easily arranged around the piston and an important component in the leg can provide a strength function and a leak-flow-conducting function.

    摘要翻译: 伸缩叉腿包括相互可移动的内管部分和外管部分以及阻尼装置,用于阻尼管部分的相对运动。 阻尼装置包括管状和同轴设置的单元。 属于第一外管部件的活塞在腔室中存在的介质中在管状单元内部的腔室中操作,该活塞速度高于选定值的介质将在该腔室的顶部和底部之间传送 活塞通过设置在活塞内部或之上的通道,以及可调节的阻尼影响构件。 该通道在低于所选值的活塞速度下被阻尼影响构件封闭,并且介质仅通过从活塞的一侧上的腔室延伸的一个或多个泄漏流动路径,经由 内部管状单元的外部和设置在内部单元外部的第二管状单元之间的间隙,一个或多个泄漏流量确定构件,并且返回到活塞的另一侧上的室。 可以独立地抑制压缩和返回泄漏流动,可以容易地布置在活塞周围,并且腿部中的重要部件可以提供强度功能和泄漏导流功能。

    Determining an operational limit of a power transmission line
    14.
    发明授权
    Determining an operational limit of a power transmission line 有权
    确定输电线路的运行极限

    公开(公告)号:US07107162B2

    公开(公告)日:2006-09-12

    申请号:US10499701

    申请日:2002-12-11

    IPC分类号: G06F19/00

    摘要: In a method, computer program and system for determining an operational limit of a power transmission line, time-stamped current phasor information and voltage phasor information for a first end and a second end of the line are determined, an ohmic resistance of the line is computed from the phasor information, and an average line temperature is computed from the ohmic resistance. This allows to determine the average line temperature without dedicated temperature sensors. The average line temperature represents the actual average temperature and is largely independent of assumptions regarding line parameters.

    摘要翻译: 在一种方法中,确定用于确定电力传输线的操作限制的计算机程序和系统,用于线路的第一端和第二端的时间戳的电流相量信息和电压相量信息,线路的欧姆电阻为 根据相量信息计算,并且根据欧姆电阻计算平均线路温度。 这可以确定没有专用温度传感器的平均线路温度。 平均线路温度表示实际平均温度,并且在很大程度上独立于有关线路参数的假设。

    Metal powder composition and preparation thereof
    15.
    发明申请
    Metal powder composition and preparation thereof 有权
    金属粉末组成及其制备

    公开(公告)号:US20050139039A1

    公开(公告)日:2005-06-30

    申请号:US11012348

    申请日:2004-12-16

    摘要: The invention concerns an improved segregation-resistant and dust-resistant metallurgical composition for making compacted parts, comprising at least about 80 percent by weight of an iron or iron-based powder; at least one alloying powder; and (c) about 0.05 to about 2 percent by weight of a binding/lubricating combination of polyethylene wax and ethylene bis-stearamide, the polyethylene wax having a weight average molecular weight below about 1000 and a melting point below that of ethylene bis-stearamide, and being present in amount between 10 and 90% by weight of the binding/lubricating combination.

    摘要翻译: 本发明涉及一种用于制造压实部件的改进的耐分离和防尘冶金组合物,其包含至少约80重量%的铁或铁基粉末; 至少一种合金粉末; 和(c)约0.05至约2重量%的聚乙烯蜡和亚乙基双硬脂酰胺的结合/润滑组合,聚乙烯蜡的重均分子量低于约1000,熔点低于亚乙基双硬脂酰胺 ,并且以粘合/润滑组合的10至90重量%的量存在。

    Inductor core, an arrangement for a press, and a manufacturing method
    16.
    发明授权
    Inductor core, an arrangement for a press, and a manufacturing method 有权
    电感芯,印刷机构和制造方法

    公开(公告)号:US09318254B2

    公开(公告)日:2016-04-19

    申请号:US14115535

    申请日:2012-05-02

    摘要: Inductor core including: a base core portion having a first surface and an opposite second surface; an inner core portion extending from the first surface in a direction transverse to the first surface; an outer core portion extending, in the direction transverse to the first surface, from the first surface to an end surface of the outer core portion, the outer core portion at least partly surrounding the inner core portion, thereby forming a space around the inner core portion for accommodating a winding; wherein the first surface includes a recess for accommodating a connection portion of the winding, said recess extending at least a part of a distance between the inner core portion and the outer core portion, and wherein the outer core portion presents a slit extending from said end surface towards the recess, and wherein the second surface comprises a first protrusion oppositely arranged to the recess.

    摘要翻译: 电感芯,包括:具有第一表面和相对的第二表面的基底芯部分; 内芯部分,从横向于第一表面的方向从第一表面延伸; 外芯部分,在横向于第一表面的方向上从第一表面延伸到外芯部分的端表面,外芯部分至少部分地围绕内芯部分,从而形成围绕内芯部分的空间 用于容纳绕组的部分; 其中所述第一表面包括用于容纳所述绕组的连接部分的凹部,所述凹部延伸所述内芯部分和所述外芯部分之间的距离的至少一部分,并且其中所述外芯部分具有从所述端部延伸的狭缝 表面朝向凹部,并且其中第二表面包括与凹部相对设置的第一突起。

    DETERMINATION OF ANGLE OF INCIDENCE
    17.
    发明申请
    DETERMINATION OF ANGLE OF INCIDENCE 有权
    确定角度变化

    公开(公告)号:US20140326824A1

    公开(公告)日:2014-11-06

    申请号:US14345752

    申请日:2012-09-13

    申请人: Mats Larsson

    发明人: Mats Larsson

    IPC分类号: F42B10/62

    摘要: The invention relates to a method for determining angle of incidence for a projectile in the path of the projectile from launcher to target, which projectile is guidable and substantially or partially roll-stable and comprises a control system and at least two actuators with associated control members, in which the following steps are included: determination of applied force for pitch control by evaluation of the moment upon the actuators of the projectile, determination of applied force for yaw control by evaluation of the moment upon the actuators of the projectile, calculation of the pitch component α of the angle of incidence and of the yaw component β of the angle of incidence, based on comparison between the evaluated moments and reference data for moments. The invention also relates to a GNC system.

    摘要翻译: 本发明涉及一种用于确定射弹在从发射器到目标的路径中的入射角的方法,该射弹是可引导的并且基本上或部分地滚动稳定,并且包括控制系统和至少两个具有相关联的控制构件的致动器 ,其中包括以下步骤:通过评估射弹致动器上的力矩来确定用于俯仰控制的施加力,通过评估射弹致动器上的力矩来确定用于偏航控制的施加力,计算 入射角和偏航分量bgr的俯仰分量α; 的入射角,基于评估的力矩和力矩的参考数据之间的比较。 本发明还涉及一种GNC系统。

    ESTIMATING A TIME OFFSET BETWEEN STATIONARY CLOCKS
    18.
    发明申请
    ESTIMATING A TIME OFFSET BETWEEN STATIONARY CLOCKS 有权
    估计静态时钟之间的时间偏差

    公开(公告)号:US20100138187A1

    公开(公告)日:2010-06-03

    申请号:US12698641

    申请日:2010-02-02

    IPC分类号: G04G7/02 G04G99/00

    摘要: Time synchronization of two clocks is disclosed herein, such as two stationary clocks. A global time signal from a global time reference or common time source can be used to calculate a common view based clock offset between the two clocks. In parallel, a network based clock offset between the two clocks can be calculated based on messages exchanged over a communication network interconnecting the two clocks, without reverting to the global time reference. Two recent values (e.g., the two most recent values) of the common view clock offset and the network based clock offset can be combined or superposed in a seamless way to produce a final time offset estimate. The combination of independently calculated common view and network based clock offsets can be a weighted average of the two values, involving respective weights based on quality estimates of the latter. The time synchronization schemes based on a Global Positioning System (GPS) and a wide area communication network can be combined to synchronize the stationary clocks of phasor measurement units (PMUs) of a wide area monitoring system to a central server clock at a Network Control Center (NCC) of the system.

    摘要翻译: 这里公开了两个时钟的时间同步,诸如两个固定时钟。 来自全局时间参考或公共时间源的全局时间信号可用于计算两个时钟之间的基于公共视图的时钟偏移。 并行地,可以基于通过互连两个时钟的通信网络交换的消息来计算两个时钟之间的基于网络的时钟偏移,而不返回到全局时间参考。 公共视图时钟偏移和基于网络的时钟偏移的两个最近的值(例如,两个最近的值)可以以无缝方式组合或重叠以产生最终时间偏移估计。 独立计算的共同视图和基于网络的时钟偏移的组合可以是两个值的加权平均值,涉及基于后者的质量估计的相应权重。 可以组合基于全球定位系统(GPS)和广域通信网络的时间同步方案,以将广域监控系统的相量测量单元(PMU)的固定时钟与网络控制中心的中央服务器时钟同步 (NCC)的系统。

    DAMPING ELECTROMAGNETIC OSCILLATIONS IN POWER SYSTEMS
    19.
    发明申请
    DAMPING ELECTROMAGNETIC OSCILLATIONS IN POWER SYSTEMS 有权
    电力系统阻尼电磁振荡

    公开(公告)号:US20100023179A1

    公开(公告)日:2010-01-28

    申请号:US12560824

    申请日:2009-09-16

    IPC分类号: G06F19/00

    摘要: Exemplary embodiments of the present disclosure provide a method and controller for damping multimode electromagnetic oscillations in electric power systems which interconnect a plurality of generators and consumers. The controller for damping such oscillations includes a phasor measurement unit (PMU) and a power oscillation damper (POD) controller. Each oscillating mode signal is damped and then superposed to derive a control signal. A feedback controller is used to feedback the control signal to a power flow control device in the power system.

    摘要翻译: 本公开的示例性实施例提供了一种用于阻尼将多个发电机和消费者互连的电力系统中的多模电磁振荡的方法和控制器。 用于阻尼这种振荡的控制器包括相量测量单元(PMU)和功率振荡阻尼器(POD)控制器。 每个振荡模式信号被衰减然后叠加以导出控制信号。 反馈控制器用于将控制信号反馈给电力系统中的功率流控制装置。

    PARAMETER ESTIMATION FOR AND USE OF A THERMAL MODEL OF A POWER LINE
    20.
    发明申请
    PARAMETER ESTIMATION FOR AND USE OF A THERMAL MODEL OF A POWER LINE 审中-公开
    电力线热模型的参数估计和使用

    公开(公告)号:US20090216472A1

    公开(公告)日:2009-08-27

    申请号:US12368819

    申请日:2009-02-10

    IPC分类号: G06F19/00 G06F17/00 G01R27/00

    CPC分类号: H02H6/00 H02H7/226

    摘要: A relationship between a temperature TI of a power line or power transmission conductor, an electrical quantity of the power line such as a current I or power flow P through the power line, as well as meteorological quantities or ambient conditions of the power line such as wind speed W, wind direction, humidity, solar radiation S and ambient temperature Ta, is established in the form of a thermal model of the power line. Values of the aforementioned quantities or variables are continuously measured, and the collected values of the quantities are evaluated in order to update model parameters of the thermal model during operation of the power line. In one example, an average temperature representative of the entire line is determined via two Phasor Measurement Units (PMU) 11, 11′ providing synchronized phasor values from two ends of the power line. An ohmic resistance of the power line is computed from the phasor values, from which in turn the average line temperature can be derived.

    摘要翻译: 电力线路或电力传输导体的温度TI,通过电力线的电流I的电力线或电力流P的电量以及电力线的气象量或环境条件之间的关系,例如 风速W,风向,湿度,太阳辐射S和环境温度Ta以电力线的热模型的形式建立。 连续地测量上述数量或变量的值,并且评估量的收集值,以便在电力线的运行期间更新热模型的模型参数。 在一个示例中,表示整条线路的平均温度通过两个相量测量单元(PMU)11,11'确定,该相量测量单元从电源线的两端提供同步的相量值。 根据相量值计算电力线的欧姆电阻,从而可以导出平均线路温度。