公开(公告)号：US08041465B2

公开(公告)日：2011-10-18

申请号：US12248862

申请日：2008-10-09

申请人： Einar V. Larsen ,  Reigh A. Walling ,  Kara Clark

发明人： Einar V. Larsen ,  Reigh A. Walling ,  Kara Clark

IPC分类号： F03D9/00

CPC分类号： H02J3/386 ,  F03D9/255 ,  F03D9/257 ,  H02J3/16 ,  H02J2003/007 ,  Y02E10/72 ,  Y02E10/763 ,  Y02E40/34

摘要： A voltage control arrangement for a system of multiple windfarms with transmission lines. Voltage is regulated at a point of regulation on the system, such as a high voltage substation or other system bus. Regulation is achieved at the point of regulation by sensing the voltage, comparing to a reference voltage, and adjusting the reactive power output of the wind turbines and other equipment in the system. The regulation point may be shifted to another point if needed to respect voltage limits at that points of the system after attempting to shift reactive load to restore voltage within limits at the other points in the system. The reference voltage may be adjusted to minimize losses for the system of multiple windfarms and transmission lines. A loss optimizing algorithm is applied to the combined multiple windfarm and transmission line to shift reactive load among local windfarms to minimize losses and to shift reactive load among individual wind turbines within an individual windfarm.

摘要翻译： 一种用于具有传输线的多个风电场系统的电压控制装置。 电压在系统的调节点进行调节，例如高压变电站或其他系统总线。 通过感应电压，与参考电压相比，调节系统中风力发电机和其他设备的无功功率输出，在调节点实现调节。 如果需要，在试图移动无功负载以在系统中的其他点的限度内恢复电压时，如果需要，调节点可能转移到另一点。 可以调整参考电压以最小化多个风电场和传输线系统的损耗。 损失优化算法被应用于组合的多个风电场和传输线，以在局部风电场之间移动无功负载，以最小化损耗并且在个别风电场内的单个风力涡轮机之间移动无功负载。

公开(公告)号：US07941246B2

公开(公告)日：2011-05-10

申请号：US12040376

申请日：2008-02-29

申请人： Nicholas Wright Miller ,  Kara Clark

发明人： Nicholas Wright Miller ,  Kara Clark

IPC分类号： G05D3/12 ,  G05D5/00 ,  G05D9/00

CPC分类号： F03D7/0284 ,  F03D9/255 ,  H02J3/386 ,  Y02E10/72 ,  Y02E10/763

摘要： An automatic generation control (AGC) augmentation system and method for wind power plant integration for controlling the power contribution to a grid by the wind plant is disclosed that provides for the calculation of the area control error (ACE) by actively communicating to the wind plant ramp rate limits and curtailment requests contributing to the ACE calculation. The augmented control of the ACE minimizes the amount of lost energy production by the wind plant.

摘要翻译： 公开了一种用于控制风力发电厂对电网的功率贡献的用于风力发电厂集成的自动发电控制（AGC）增强系统和方法，其通过主动地与风力发电机通信来提供面积控制误差（ACE）的计算 坡度速率限制和缩减请求有助于ACE计算。 ACE的增强控制最大限度地减少了风力发电厂产生的能量损失量。

公开(公告)号：US06327162B1

公开(公告)日：2001-12-04

申请号：US08619104

申请日：1996-03-21

申请人： Einar V. Larsen ,  Kara Clark ,  Reigh Walling

发明人： Einar V. Larsen ,  Kara Clark ,  Reigh Walling

IPC分类号： H02H700

CPC分类号： H02J3/1814 ,  Y02E40/18 ,  Y10T307/615

摘要： A static series voltage regulator (SSVR) for an electric power distribution system protects a load on a feeder branch from voltage dips by boosting voltage under certain conditions. The SSVR contains a 3-phase voltage source inverter and a source bridge, fed from a source, supplying the dc side of the inverter. A series transformer is connected between the power source and a load coupling the inverter output to appear between the power source and the load. A surge filter connected in parallel with the series transformer protects the load from fast front voltage pulses produced by the inverter, and isolation and bypass switches isolate the inverter and series transformer from the power source and load. The inverter is controlled so that during normal operation it acts as a short on the series transformer, and, during a fault that causes a dip in the source voltage, it injects voltage in series with the source voltage to provide a boost action to maintain load voltage at a desired magnitude and balance. The SSVR senses the incoming voltage from the utility and load current and constructs what the load voltage would be in the absence of boost action. This information is processed through a minimum detector to obtain a signal VLOXFL which rapidly responds to a voltage dip but remembers a dip happened for a few cycles. When VLOXFL falls below some threshold then boosting begins to bring load voltage to a desired level. Boosting is halted after VLOXFL exceeds the threshold, or when the load voltage exceeds a high voltage threshold.

摘要翻译： 用于配电系统的静态串联电压调节器（SSVR）通过在特定条件下提升电压来保护馈线支路上的负载不受电压骤降。 SSVR包含一个三相电压源逆变器和一个源极，源极供电，为逆变器的直流侧供电。 一个串联变压器连接在电源和耦合变频器输出的负载之间，出现在电源和负载之间。 与串联变压器并联连接的浪涌滤波器保护负载免受逆变器产生的快速前置电压脉冲的影响，隔离和旁路开关将变频器和串联变压器与电源和负载隔离。 逆变器被控制，使得在正常工作期间，它充当串联变压器的短路，并且在导致源电压下降的故障期间，它将与源电压串联注入电压以提供升压动作以维持负载 电压达到所需的幅度和平衡。 SSVR检测来自公用事业的输入电压和负载电流，并构建在没有升压动作的情况下负载电压将是什么。 该信息通过最小检测器处理以获得快速响应于电压下降的信号VLOXFL，但是记住在几个周期内发生的下降。 当VLOXFL低于某个阈值时，升压开始使负载电压达到所需的电平。 VLOXFL超过阈值后，或当负载电压超过高电压阈值时，升压停止。

公开(公告)号：US20120010756A1

公开(公告)日：2012-01-12

申请号：US13234417

申请日：2011-09-16

申请人： Einar V. Larsen ,  Reigh A. Walling ,  Kara Clark

发明人： Einar V. Larsen ,  Reigh A. Walling ,  Kara Clark

IPC分类号： G06F1/28

CPC分类号： H02J3/386 ,  F03D9/255 ,  F03D9/257 ,  H02J3/16 ,  H02J2003/007 ,  Y02E10/72 ,  Y02E10/763 ,  Y02E40/34

摘要： A voltage control arrangement for a system of multiple windfarms with transmission lines. Voltage is regulated at a point of regulation on the system, such as a high voltage substation or other system bus. Regulation is achieved at the point of regulation by sensing the voltage, comparing to a reference voltage, and adjusting the reactive power output of the wind turbines and other equipment in the system. The regulation point may be shifted to another point if needed to respect voltage limits at that points of the system after attempting to shift reactive load to restore voltage within limits at the other points in the system. The reference voltage may be adjusted to minimize losses for the system of multiple windfarms and transmission lines. A loss optimizing algorithm is applied to the combined multiple windfarm and transmission line to shift reactive load among local windfarms to minimize losses and to shift reactive load among individual wind turbines within an individual windfarm.

摘要翻译： 一种用于具有传输线的多个风电场系统的电压控制装置。 电压在系统的调节点进行调节，例如高压变电站或其他系统总线。 通过感应电压，与参考电压相比，调节系统中风力发电机和其他设备的无功功率输出，在调节点实现调节。 如果需要，在试图移动无功负载以在系统中的其他点的限度内恢复电压时，如果需要，调节点可能转移到另一点。 可以调整参考电压以最小化多个风电场和传输线系统的损耗。 损失优化算法被应用于组合的多个风电场和传输线，以在局部风电场之间移动无功负载，以使损失最小化并且在单个风电场内的各个风力涡轮机之间移动无功负载。

公开(公告)号：US20100025994A1

公开(公告)日：2010-02-04

申请号：US12181658

申请日：2008-07-29

申请人： Mark E. Cardinal ,  Nicholas W. Miller ,  Kara Clark

发明人： Mark E. Cardinal ,  Nicholas W. Miller ,  Kara Clark

IPC分类号： F03D7/00

CPC分类号： H02J3/383 ,  F03D7/0284 ,  F03D7/047 ,  F03D7/048 ,  H02J3/386 ,  H02M1/00 ,  H02M2001/0016 ,  Y02E10/563 ,  Y02E10/723 ,  Y02E10/763 ,  Y02P80/14 ,  Y10T307/522 ,  Y10T307/718

摘要： A wind turbine generator control system is provided for controlling output of a plurality of tightly-coupled windfarms connected at a point of common coupling with a power system grid. A master reactive control device employs algorithms whose technical effect is to coordinate the real power, reactive power and voltage output of the multiple windfarms. The controller incorporates a reactive power regulator that can be used to regulate reactive power, power factor or voltage at the point of common coupling and an active power regulator that can be used to regulate real power at the point of common coupling; such that each windfarm is not asked to contribute or violate its own operating capability.

摘要翻译： 提供一种风力发电机控制系统，用于控制在与电力系统电网的公共耦合点连接的多个紧密耦合的风电场的输出。 主反应控制装置采用算法，其技术作用是协调多个风电场的有功功率，无功功率和电压输出。 控制器包含一个无功功率调节器，可用于调节公共耦合点处的无功功率，功率因数或电压，以及可用于调节公共耦合点实际功率的有功功率调节器; 使得每个风电场不被要求贡献或违反其自身的运行能力。

公开(公告)号：US5424627A

公开(公告)日：1995-06-13

申请号：US48132

申请日：1993-04-13

申请人： Kara Clark ,  Einar V. Larsen ,  Carl A. Wegner ,  Richard J. Piwko

发明人： Kara Clark ,  Einar V. Larsen ,  Carl A. Wegner ,  Richard J. Piwko

IPC分类号： H02H9/04 ,  H02J3/18 ,  H02J3/24 ,  G05F1/00

CPC分类号： H02J3/1807 ,  H02J3/24 ,  Y02E40/14

摘要： A modular thyristor controlled series capacitor (TCSC) system, including a method and apparatus, uses phase controlled firing based on monitored capacitor voltage and line current. For vernier operation, the TCSC system predicts an upcoming firing angle for switching a thyristor controlled commutating circuit to bypass line current around a series capacitor. Each bypass current pulse changes the capacitor voltage proportionally to the integrated value of the current pulse. The TCSC system promptly responds to an offset command from a higher-level controller to control bypass thyristor duty to minimize thyristor damage, and to prevent capacitor voltage drift during line current disturbances. In a multi-module TCSC system, the higher level controller accommodates competing objectives of various system demands, including minimizing losses in scheduling control, stabilizing transients, damping subsynchronous resonance (SSR) oscillations, damping direct current (DC) offset, and damping power-swings.

摘要翻译： 一种模块化晶闸管控制串联电容（TCSC）系统，包括一种方法和装置，使用基于受监控电容电压和线电流的相控点火。 对于游标操作，TCSC系统预测了即将到来的触发角，用于切换晶闸管控制的换向电路以绕过串联电容器的旁路线路电流。 每个旁路电流脉冲将电容电压与电流脉冲的积分值成正比。 TCSC系统迅速响应来自上级控制器的偏移命令，以控制旁路晶闸管负载，以最大限度地减小晶闸管损坏，并防止线路电流扰动期间的电容电压漂移。 在多模块TCSC系统中，较高级别的控制器适应各种系统需求的竞争目标，包括最小化调度控制中的损耗，稳定瞬变，阻尼次同步谐振（SSR）振荡，阻尼直流（DC）偏移和阻尼功率 - 波动

公开(公告)号：US5374853A

公开(公告)日：1994-12-20

申请号：US48133

申请日：1993-04-13

申请人： Einar V. Larsen ,  Sandeep Nyati ,  Murray A. Eitzmann ,  Josef Urbanek ,  Kara Clark

发明人： Einar V. Larsen ,  Sandeep Nyati ,  Murray A. Eitzmann ,  Josef Urbanek ,  Kara Clark

IPC分类号： H02J3/18 ,  H02J3/24 ,  H02H9/00

CPC分类号： H02J3/24 ,  H02J3/1807 ,  Y02E40/14

摘要： A thyristor controlled series capacitor (TCSC) system, including a method and apparatus, uses phase controlled firing based on monitored capacitor voltage and line current. For vernier operation, the TCSC system predicts an upcoming firing angle for switching a thyristor controlled commutating circuit to bypass line current around a series capacitor. Each bypass current pulse changes the capacitor voltage proportionally to the integrated value of the current pulse. To damp the natural oscillatory response of the inductive commutating circuit and the capacitor, a bypass mode firing angle is introduced to create a nonlinear response. The harmonic distortion on the commutating circuit current waveform is determined from the capacitor voltage, which is then used to determine the magnitude of the firing angle. Preferably the firing angle magnitude decreases in response to decreasing capacitor voltage, eventually returning to steady-state conditions.

摘要翻译： 包括方法和装置的晶闸管控制串联电容器（TCSC）系统使用基于监测的电容器电压和线路电流的相位控制点火。 对于游标操作，TCSC系统预测了即将到来的触发角，用于切换晶闸管控制的换向电路以绕过串联电容器的旁路线路电流。 每个旁路电流脉冲将电容电压与电流脉冲的积分值成正比。 为了抑制感应换向电路和电容器的自然振荡响应，引入旁路模式触发角以产生非线性响应。 整流电路电流波形上的谐波失真是根据电容器电压确定的，然后电容电压用于确定触发角的大小。 优选地，触发角度值响应于电容器电压降低而减小，最终返回到稳态条件。

公开(公告)号：US5202583A

公开(公告)日：1993-04-13

申请号：US806768

申请日：1991-12-13

申请人： Einar V. Larsen ,  Kara Clark

发明人： Einar V. Larsen ,  Kara Clark

IPC分类号： H02H9/04 ,  H02J3/18 ,  H02J3/24

CPC分类号： H02J3/24 ,  H02J3/1807 ,  Y02E40/14 ,  Y02E40/30

摘要： A firing control scheme, including a method and apparatus, for secure vernier operation of a thyristor controlled series capacitor (TCSC) in series with a transmission line uses phase controlled firing based on monitored capacitor voltage and line current. The TCSC system has a thyristor switched inductive commutating circuit in parallel with the series capacitor. Vernier operation of the TCSC system is provided by predicting an upcoming firing angle for switching the commutating circuit to conduct a thyristor bypass current pulse therethrough. The current pulse causes an alternating offset component of voltage to appear across the series capacitor, in addition to the normal voltage component. Each current pulse changes the capacitor voltage proportionally to the integrated value of the current pulse. The TCSC system promptly responds to an offset command from a higher-level controller, precisely controls the duty on the bypass thyristors to minimize thyristor damage, and prevents drift of the capacitor voltage away from a desired setting during line current disturbances.

摘要翻译： 包括与传输线串联的可控硅控制串联电容器（TCSC）的安全游标操作的方法和装置的点火控制方案使用基于监视的电容器电压和线路电流的相位控制点火。 TCSC系统具有与串联电容并联的晶闸管开关感应换向电路。 TCSC系统的游标操作是通过预测即将到来的触发角来切换换向电路，以便通过其传导晶闸管旁路电流脉冲。 除了正常的电压分量之外，电流脉冲还导致串联电容器出现电压的交变偏移分量。 每个电流脉冲将电容电压与电流脉冲的积分值成正比。 TCSC系统迅速响应来自更高级别控制器的偏移指令，精确控制旁路晶闸管的占空比以最小化晶闸管损坏，并防止电容电压在线路电流干扰期间偏离所需设置。

公开(公告)号：US20110141641A1

公开(公告)日：2011-06-16

申请号：US12826996

申请日：2010-06-30

申请人： Reigh Allen Walling ,  Einar Vaughn Larsen ,  Kara Clark

发明人： Reigh Allen Walling ,  Einar Vaughn Larsen ,  Kara Clark

IPC分类号： H02H3/20

CPC分类号： H02H7/067 ,  H02H9/041

摘要： A circuit breaker is provided for protecting dynamoelectric machinery. The circuit breaker includes a feeder input connection connected to a feeder line. The feeder line is connected to a dynamoelectric machine. A substation connection is connected to a substation bus. An interrupting breaker is connected between the feeder input connection and the substation connection. A shorting switch is connected to the feeder input connection, and an impedance device is connected to the shorting switch and a ground or neutral. The impedance device, shorting switch and ground/neutral reduces excessive voltages on the feeder line when the feeder line is isolated from the substation by the circuit breaker, and the impedance device is selected to reduce a torque transient experienced by the dynamoelectric machine.

摘要翻译： 提供一种用于保护电动机械的断路器。 断路器包括连接到馈线的馈线输入连接。 馈电线连接到电动机。 变电站连接连接到变电站总线。 断路器连接在馈线输入连接和变电站连接之间。 短路开关连接到馈线输入连接，并且阻抗装置连接到短路开关和地线或中性线。 当馈线通过断路器与变电站隔离时，阻抗装置，短路开关和接地/中性线减少馈线上的过大电压，并且选择阻抗装置以减少电动机所经历的转矩瞬变。

公开(公告)号：US20100094474A1

公开(公告)日：2010-04-15

申请号：US12248862

申请日：2008-10-09

申请人： Einar V. Larsen ,  Reigh A. Walling ,  Kara Clark

发明人： Einar V. Larsen ,  Reigh A. Walling ,  Kara Clark

IPC分类号： G05B13/04 ,  G06F1/28

CPC分类号： H02J3/386 ,  F03D9/255 ,  F03D9/257 ,  H02J3/16 ,  H02J2003/007 ,  Y02E10/72 ,  Y02E10/763 ,  Y02E40/34

摘要： A voltage control arrangement for a system of multiple windfarms with transmission lines. Voltage is regulated at a point of regulation on the system, such as a high voltage substation or other system bus. Regulation is achieved at the point of regulation by sensing the voltage, comparing to a reference voltage, and adjusting the reactive power output of the wind turbines and other equipment in the system. The regulation point may be shifted to another point if needed to respect voltage limits at that points of the system after attempting to shift reactive load to restore voltage within limits at the other points in the system. The reference voltage may be adjusted to minimize losses for the system of multiple windfarms and transmission lines. A loss optimizing algorithm is applied to the combined multiple windfarm and transmission line to shift reactive load among local windfarms to minimize losses and to shift reactive load among individual wind turbines within an individual windfarm.

摘要翻译： 一种用于具有传输线的多个风电场系统的电压控制装置。 电压在系统的调节点进行调节，例如高压变电站或其他系统总线。 通过感应电压，与参考电压相比，调节系统中风力发电机和其他设备的无功功率输出，在调节点实现调节。 如果需要，在试图移动无功负载以在系统中的其他点的限度内恢复电压时，如果需要，调节点可能转移到另一点。 可以调整参考电压以最小化多个风电场和传输线系统的损耗。 损失优化算法被应用于组合的多个风电场和传输线，以便在局部风电场之间移动无功负载，以最小化损失并且在单个风电场内的各个风力涡轮机之间移动无功负载。