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81.发明授权Methods for minimizing double-frequency ripple power in single-phase power conditioners 有权降低单相功率调节器双频纹波功率的方法公开(公告)号：US08325499B2
公开(公告)日：2012-12-04
申请号：US13215527
申请日：2011-08-23
IPC分类号： H02J1/02
CPC分类号： H02J3/1835 , H02J3/1842 , H02J3/383 , H02J3/387 , H02J2001/004 , Y02E10/563 , Y02E40/22 , Y02E40/30
摘要： A method is provided for minimizing a double-frequency ripple power exchanged between a load and an energy source, the energy source delivering electrical power to the load through a single-phase power conditioner, and the power conditioner being coupled to an energy storage device. The method includes determining a phase shift of an AC output signal of the power condition and an average AC output power of the power conditioner. The average AC output power may be a predetermined value or a calculated value based on sensed or measured signals. The method further includes generating an AC signal at an energy storage device. The generated AC signal has an amplitude that is a function of the average AC output power and a phase shift substantially equal to 45 degrees minus an amount that is dependent on the determined phase shift. In some embodiments, the phase shift may be determined to be of a non-zero value.
摘要翻译： 提供了一种用于最小化负载和能量源之间交换的双频纹波功率的方法，所述能量源通过单相功率调节器将功率传送到负载，并且所述功率调节器耦合到能量存储装置。 该方法包括确定功率条件的AC输出信号的相移和功率调节器的平均AC输出功率。 平均交流输出功率可以是基于感测或测量信号的预定值或计算值。 该方法还包括在能量存储装置处产生AC信号。 所产生的AC信号具有作为平均AC输出功率的函数的幅度和基本上等于45度的相移减去取决于确定的相移的量。 在一些实施例中，可以将相移确定为非零值。
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82.发明授权公开(公告)号：US08283903B2
公开(公告)日：2012-10-09
申请号：US12699639
申请日：2010-02-03
申请人： Xiaoming Feng
发明人： Xiaoming Feng
CPC分类号： H02J3/1828 , H02J3/1878 , Y02E40/30
摘要： The method determines the optimal settings for the controllable taps ut of voltage regulating transformers and the capacitor bank switches uc in a distribution network. Var optimization is calculated with the controllable tap settings ut fixed at an initial value, or the best value found so far, to output an optimized set of control settings uc. Voltage optimization is calculated with the control settings uc fixed at the best solution found so far, to output an optimal set of control settings ut. Using an objective function, system performance is evaluated using the optimal set of control settings ut and uc and repeating the steps until either the control values ut and uc do not change from one iteration to the next, the objective function value does not change or if the new objective function value is greater than the last. The control values ut and uc are then output to a distribution control system.
摘要翻译： 该方法确定调压变压器的可控抽头和分配网络中的电容器组开关uc的最佳设置。 Var优化是使用初始值固定的可控抽头设置或迄今发现的最佳值来计算的，以输出优化的一组控制设置uc。 电压优化是通过将控制设置uc固定在目前为止找到的最佳解决方案来计算的，以输出最佳的一组控制设置。 使用目标函数，使用最佳的控制设置ut和uc来评估系统性能，并重复步骤，直到控制值ut和uc不会从一个迭代改变到下一个迭代，则目标函数值不会改变，或者如果 新的目标函数值大于最后一个。 然后将控制值ut和uc输出到分配控制系统。
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83.发明申请公开(公告)号：US20120242295A1
公开(公告)日：2012-09-27
申请号：US13409143
申请日：2012-03-01
申请人： John Bech , Knud Dam Hageman Madsen
发明人： John Bech , Knud Dam Hageman Madsen
IPC分类号： H02P9/10
CPC分类号： H02J9/04 , F03D9/255 , F05B2270/1074 , H02J3/18 , H02J3/386 , Y02B10/72 , Y02E10/725 , Y02E10/763 , Y02E10/766 , Y02E40/30 , Y02P80/22
摘要： A method is provided for operating an electric energy production facility during a fault in a utility grid to which energy is to be delivered. The energy production facility includes at least one wind turbine. The method includes disconnecting the utility grid from the wind turbine. The method further includes connecting an external generator via a cable to an auxiliary equipment of the wind turbine, to deliver active power to the auxiliary equipment. The cable is connected to a converter of the wind turbine the converter supporting reactive power. A corresponding arrangement also provided.
摘要翻译： 提供了一种用于在能够被输送能量的公用电网故障期间操作电能生产设备的方法。 能量生产设备包括至少一个风力涡轮机。 该方法包括从风力涡轮机断开公用电网。 该方法还包括通过电缆将外部发电机连接到风力涡轮机的辅助设备，以将有功功率输送到辅助设备。 电缆连接到风力涡轮机的转换器，支持无功功率的转换器。 还提供了相应的安排。
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公开(公告)号：US20120242153A1
公开(公告)日：2012-09-27
申请号：US13492093
申请日：2012-06-08
IPC分类号： H02J1/00
CPC分类号： H02M1/32 , H02J3/1835 , H02M2001/0077 , Y02E40/30 , Y10T307/685
摘要： A dc power source for a high voltage power apparatus, the dc power source including one or more strings including a plurality of dc power source units connected in series, and switches configured to connect and disconnect said strings. The switches are solid-state switches distributed among the power source units of each string, and all solid-state switches in the string are arranged so that they are turned on and off simultaneously. Each switch is connected in parallel with a first controllable semiconductor in a first direction and connected in parallel with a second controllable semiconductor in a second direction which is opposite to the first direction, and the dc power source includes a control unit configured to bypass a failed switch by triggering the forward biased of the first or second controllable semiconductor connected to the failed switch in case a fault in the switch is detected.
摘要翻译： 一种用于高压电力设备的直流电源，所述直流电源包括包括串联连接的多个直流电源单元的一个或多个串以及被配置为连接和断开所述串的开关。 这些开关是分布在每个串的电源单元之间的固态开关，并且串中的所有固态开关被布置成使得它们同时导通和截止。 每个开关在第一方向上与第一可控半导体并联连接，并且在与第一方向相反的第二方向上与第二可控半导体并联连接，并且直流电源包括配置成绕过故障的控制单元 在检测到开关故障的情况下，通过触发连接到故障开关的第一或第二可控半导体的正向偏置来切换。
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公开(公告)号：US08274349B2
公开(公告)日：2012-09-25
申请号：US12992934
申请日：2008-05-16
IPC分类号： H01F30/12
摘要： A tap-switching autotransformer for regulating the voltage supplied to a facility includes an electronics sub-assembly for controlling switching of the taps. The electronics sub-assembly and the windings are contained in a housing from which the electronics sub-assembly may be removed for repair or replacement. The electronics sub-assembly is adapted to enable an electronically actuated switch to short-circuit two of the taps. A mechanical switch enables a separate short-circuit to be maintained between the taps to enable the electronics sub-assembly to be safely removed from the housing.
摘要翻译： 用于调节提供给设施的电压的抽头切换自耦变压器包括用于控制抽头的切换的电子部件。 电子组件和绕组被包含在壳体中，电子组件可从该外壳中去除以进行修理或更换。 电子组件适于使电子致动的开关短路两个抽头。 机械开关能够在分接头之间保持单独的短路，以使电子组件能够从壳体中安全地移除。
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86.发明授权公开(公告)号：US08258761B2
公开(公告)日：2012-09-04
申请号：US12181954
申请日：2008-07-29
CPC分类号： H02J3/1821 , H02M1/4208 , Y02B70/126 , Y02E40/30 , Y10T307/352 , Y10T307/406 , Y10T307/549
摘要： Electrical energy consumption control apparatuses and electrical energy consumption control methods are described. According to one aspect, an electrical energy consumption control apparatus includes processing circuitry configured to receive a signal which is indicative of current of electrical energy which is consumed by a plurality of loads at a site, to compare the signal which is indicative of current of electrical energy which is consumed by the plurality of loads at the site with a desired substantially sinusoidal waveform of current of electrical energy which is received at the site from an electrical power system, and to use the comparison to control an amount of the electrical energy which is consumed by at least one of the loads of the site.
摘要翻译： 描述了电能消耗控制装置和电能消耗控制方法。 根据一个方面，电能消耗控制装置包括处理电路，其被配置为接收指示由现场的多个负载消耗的电能的电流的信号，以比较表示电流的电流的信号 由现场的多个负载消耗的能量，其具有从电力系统在现场接收的期望的基本正弦波电能的电能，并且使用该比较来控制电能的量 由站点的至少一个负载消耗。
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公开(公告)号：US08234015B2
公开(公告)日：2012-07-31
申请号：US12809722
申请日：2008-12-17
申请人： John Bech , Peter Nielsen , Philip Carne Kjaer
发明人： John Bech , Peter Nielsen , Philip Carne Kjaer
CPC分类号： H02J3/1885 , H02J3/1821 , H02J3/386 , Y02E10/763 , Y02E40/30 , Y02E40/32
摘要： The present invention relates to a method for controlling a voltage level of a power supply grid operationally connected to a source of electrical power, the method comprising the steps of determining a short circuit impedance of the power supply grid at a point of common coupling, calculating, using the determined short circuit impedance, a gain value of the power supply grid, and controlling the grid voltage level in accordance with the calculated gain value by applying said gain value as a gain parameter in a voltage controller. The method according to the present invention may be implemented as a method for configuring a voltage controller once and for all, or it may be implemented as a method for adaptively adjusting a gain of a voltage controller.
摘要翻译： 本发明涉及一种用于控制可操作地连接到电源的电源电网的电压电平的方法，所述方法包括以下步骤：在公共耦合点确定电源电网的短路阻抗，计算 使用确定的短路阻抗，电源电网的增益值，以及通过将所述增益值作为增益参数应用于电压控制器，根据所计算出的增益值来控制电网电压电平。 根据本发明的方法可以实现为一种用于一次一体地配置电压控制器的方法，或者可以将其实现为用于自适应地调节电压控制器的增益的方法。
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88.发明申请公开(公告)号：US20120136643A1
公开(公告)日：2012-05-31
申请号：US13113876
申请日：2011-05-23
IPC分类号： G06F17/50
CPC分类号： H02J3/18 , G06F17/5036 , G06F2217/78 , H02J2003/007 , Y02E40/30 , Y02E60/76 , Y04S40/22
摘要： Systems and methods for global voltage security assessment in power systems are disclosed herein. In one embodiment, a method for assessing voltage security in a power system having a number (i) of buses includes capturing a change in bus voltage and a change in line reactive power for at least some of the buses in the power system, for each of the i number of buses, calculating a voltage assessment index) (Γi) for as follows: Γ i = ∑ j Δ Q ij Δ V i where ΔVi is the change in bus voltage and ΔQij is the change in line reactive power from a connection j over a predetermined period of time. The method further includes assessing a current voltage security status of the power system based on the calculated voltage assessment index (Γi).
摘要翻译： 本文公开了用于电力系统中全球电压安全评估的系统和方法。 在一个实施例中，一种用于评估具有数字（i）总线的电力系统中的电压安全性的方法包括：对于每个总线，捕获总线电压的变化和电力系统中的至少一些总线的线路无功功率的变化 的公交车数，计算电压评估指标）（＆Ggr; i）如下：＆Ggr; i =Σj＆Dgr; 人物Q ij＆Dgr 其中＆Dgr; Vi是总线电压和Dgr的变化; Qij是在预定时间段内来自连接j的线路无功功率的变化。 该方法还包括基于所计算的电压评估指数（＆Ggr; i）来评估电力系统的当前电压安全状态。
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公开(公告)号：US20120112714A1
公开(公告)日：2012-05-10
申请号：US13384644
申请日：2009-07-27
申请人： Andres Agudo Araque
发明人： Andres Agudo Araque
IPC分类号： H02J3/18
摘要： A power compensation system 108 for compensating for the reactive power requirements in an electricity system 100 is provided. The reactive power compensation system 108 includes a static synchronous compensation unit 202, a harmonic current elimination unit 204 and a compensation control unit 206. The static synchronous compensation unit 202 comprises a plurality of static synchronous compensation modules 302 for compensating for the reactive power in the electricity system 100. The harmonic current elimination unit 204 includes a plurality of active filtration modules 502 for eliminating the harmonic current generated in the electricity system 100. The compensation control unit 206 implements a sequential control mechanism for regulating the operation of the static synchronous compensation modules 302 and the active filtration modules 502.
摘要翻译： 提供了用于补偿电力系统100中的无功功率需求的功率补偿系统108。 无功补偿系统108包括静态同步补偿单元202，谐波电流消除单元204和补偿控制单元206.静态同步补偿单元202包括多个静态同步补偿模块302，用于补偿 电力系统100.谐波电流消除单元204包括用于消除电力系统100中产生的谐波电流的多个有源过滤模块502.补偿控制单元206实施用于调节静态同步补偿模块的操作的顺序控制机构 302和有源过滤模块502。
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公开(公告)号：US20120112559A1
公开(公告)日：2012-05-10
申请号：US13340837
申请日：2011-12-30
申请人： Stefan Thorburn , Lars Liljestrand , Ake Petersson
发明人： Stefan Thorburn , Lars Liljestrand , Ake Petersson
IPC分类号： H01H47/00
CPC分类号： H02J3/1828 , Y02E40/30 , Y10T307/273 , Y10T307/76
摘要： An arrangement to control an electrical property of a medium or high voltage AC system including a number n of phases with n being at least two includes a number n of phases, each phase including a series connection of at least two electrical elements with an intermediate connection point between each pair of the at least two electrical elements, where each of the n phases of the arrangement is connected on one side to an original common neutral point and on the other side to one of the n phases of the AC system. The arrangement further includes a number of first switchable interconnections, where the first switchable interconnections are each arranged between two intermediate connection points of two of the n phases of the arrangement, and at least one control unit arranged to control the first switchable interconnections.
摘要翻译： 用于控制包括n个至少为2个相数的n个相位的中等或高压AC系统的电气特性的装置包括n个相位，每相包括至少两个电气元件与中间连接的串联连接 在每对所述至少两个电气元件之间的点之间，其中所述布置的所述n个相的每一个在一侧连接到原始公共中性点，并且在另一侧连接到所述AC系统的n个相中的一个。 该布置还包括多个第一可切换互连，其中第一可切换互连各自布置在该布置的n个相中的两个的两个中间连接点之间，以及至少一个控制单元，其布置成控制第一可切换互连。
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