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1. 发明申请

US20190245353A1 UTILIZATION OF DISTRIBUTED GENERATOR INVERTERS AS STATCOM 审中-公开
公开(公告)号：US20190245353A1
公开(公告)日：2019-08-08
申请号：US16280756
申请日：2019-02-20
申请人： Rajiv Kumar VARMA
发明人： Rajiv Kumar VARMA , Vinod KHADKIKAR , Shah Arifur RAHMAN
IPC分类号： H02J3/38 , H02J3/01 , H02J3/18 , H02J3/40 , H02M7/44 , H02J9/00
CPC分类号： H02J3/383 , H02J3/01 , H02J3/1842 , H02J3/386 , H02J3/40 , H02J9/00 , H02M7/44 , Y02E10/563 , Y02E40/16 , Y02E40/22 , Y02E40/40 , Y10T307/615
摘要： The invention provides a method and system for operating a solar farm inverter as a Flexible AC Transmission System (FACTS) device—a STATCOM—for voltage control. The solar farm inverter can provide voltage regulation, damping enhancement, stability improvement and other benefits provided by FACTS devices. In one embodiment, the solar farm operating as a STATCOM at night is employed to increase the connectivity of neighbouring wind farms that produce peak power at night due to high winds, but are unable to connect due to voltage regulation issues. The present invention can also operate during the day because there remains inverter capacity after real power export by the solar farm. Additional auxiliary controllers are incorporated in the solar farm inverter to enhance damping and stability, and provide other benefits provided by FACTS devices.

2. 发明授权

US08867244B2 HVDC converter including fullbridge cells for handling a DC side short circuit 有权
标题翻译： HVDC转换器包括用于处理DC侧短路的全桥单元
公开(公告)号：US08867244B2
公开(公告)日：2014-10-21
申请号：US13813414
申请日：2010-07-30
申请人： David Reginald Trainer , William Crookes , Timothy Charles Green , Michael Marc Claude Merlin
发明人： David Reginald Trainer , William Crookes , Timothy Charles Green , Michael Marc Claude Merlin
IPC分类号： H02J1/10 , H02J3/36 , H02J5/00 , H02M1/32 , H02M7/797 , H02J3/18 , H02M7/483
CPC分类号： H02J7/02 , H02J3/1857 , H02J3/36 , H02M1/32 , H02M7/797 , H02M2007/4835 , Y02E40/16 , Y02E40/26 , Y02E60/60
摘要： A power electronic converter for use in high voltage direct current power transmission and reactive power compensation comprises three converter limbs, each converter limb including first and second DC terminals for connection in use to a DC network and an AC terminal for connection in use to a respective phase of a three-phase AC network, each converter limb defining first and second limb portions being connected in series between the respective AC terminal and a respective one of the first and second DC terminals, each limb portion including at least one switching element being controllable in use to facilitate power conversion between the AC and DC networks, the power electronic converter further including a plurality of auxiliary units, each auxiliary unit being operably associated with the respective phase of the AC network, each auxiliary unit including at least one module including a voltage source, the limb portions being controllable in use to define at least one three-phase static synchronous compensator including at least one of the plurality of auxiliary units in each branch of a star configuration, each of the first and/or second DC terminals defining the neutral point of the respective star configuration.
摘要翻译：用于高压直流电力传输和无功补偿的电力电子转换器包括三个转换器分支，每个转换器分支包括用于连接到DC网络的第一和第二DC终端和用于连接到相应的AC终端的AC终端三相AC网络的相位，每个转换器限定第一和第二分支部分串联连接在相应AC端子与第一和第二DC端子中的相应一个之间，每个分支部分包括至少一个开关元件，其可控制在用于促进AC和DC网络之间的电力转换的情况下，电力电子转换器还包括多个辅助单元，每个辅助单元可操作地与AC网络的相位相关联，每个辅助单元包括至少一个模块，电压源，肢体部分在使用中是可控的，以限定至少一个三相s 同步补偿器包括星形结构的每个分支中的多个辅助单元中的至少一个，第一和/或第二直流端子中的每一个限定相应的星形结构的中性点。

3. 发明申请

US20130293021A1 ENHANCED UTILIZATION OF REAL POWER GENERATING CAPACITY OF DISTRIBUTED GENERATOR (DG) INVERTERS AS STATCOM 审中-公开
标题翻译：分布式发电机（DG）逆变器作为STATCOM的实际发电能力的增强利用
公开(公告)号：US20130293021A1
公开(公告)日：2013-11-07
申请号：US13875014
申请日：2013-05-01
申请人： Rajiv Kumar VARMA , Vinay SHARMA
发明人： Rajiv Kumar VARMA , Vinay SHARMA
IPC分类号： H02J3/18
CPC分类号： H02J3/18 , H02J3/1842 , H02J3/382 , H02J3/383 , Y02E10/563 , Y02E40/16 , Y02E40/22 , Y10T307/675
摘要： Systems, methods, and devices relating to the provision of system control support in the form of reactive power support or voltage control support to power transmission or distribution networks using inverter based power generation facilities that are coupled to the power transmission or distribution networks. An inverter based power generation facility, such as a photovoltaic based solar farm or a wind farm, can task all or a portion of its inverter capacity to provide reactive power support or voltage control support to the power transmission or distribution network. This invention applies to the operation of PV solar systems anytime during the day (even during peak power generation times) and other inverter based DGs during the entire 24-hour period. The power generation facility disconnects at least one of its power generation modules from the power transmission or distribution network and makes available required inverter capacity for providing system control support.
摘要翻译：与使用基于逆变器的发电设备耦合到电力传输或分配网络的电力传输或分配网络的以无功功率支持或电压控制形式提供系统控制支持相关的系统，方法和设备。基于逆变器的发电设施，例如基于光伏的太阳能农场或风力发电场，可以将其逆变器能力的全部或一部分任务提供给输电或配电网络的无功功率支持或电压控制支持。本发明适用于在整个24小时内白天（即使在高峰期发电时间）和其他基于逆变器的DG的任何时间的太阳能光伏系统的运行。发电设备将其发电模块中的至少一个与输电或配电网络断开，并提供所需的逆变器容量以提供系统控制支持。

4. 发明授权

US07813884B2 Method of calculating power flow solution of a power grid that includes generalized power flow controllers 有权
标题翻译：计算包含广义潮流控制器的电网功率流解决方案
公开(公告)号：US07813884B2
公开(公告)日：2010-10-12
申请号：US12013629
申请日：2008-01-14
申请人： Chia-Chi Chu , Sheng-Huei Lee , Chung-Hsiung Chen
发明人： Chia-Chi Chu , Sheng-Huei Lee , Chung-Hsiung Chen
IPC分类号： G01R21/06
CPC分类号： H02J3/06 , G01R19/2513 , H02J3/1814 , Y02E40/16 , Y02E40/18
摘要： A method to incorporate the steady-state model of the generalized power flow controller into a Newton-Raphson power flow algorithm adopts a flexible steady-state model of the generalized power flow controller, which can be applied to calculate the power flow solution of a power grid embedded with STATCOM, UPFC, GUPFC and the generalized power flow controller in a single framework. The method only incorporates the control variables of the shunt voltage sourced converter into the state vector of the Newton-Raphson power flow algorithm. The increment of the state variables due to incorporating the generalized power flow controller is less than the prior art. Further, the method can preserve the quadratic convergence characteristic of the Newton-Raphson power flow algorithm after embedding the generalized power flow controller into a power grid.
摘要翻译：将广义潮流控制器的稳态模型纳入牛顿 - 拉夫逊潮流算法的方法采用广义潮流控制器的灵活稳态模型，可以应用于计算功率流动解在单个框架中嵌入STATCOM，UPFC，GUPFC和广义潮流控制器的网格。该方法仅将分流电压源转换器的控制变量合并到牛顿 - 拉夫逊幂流算法的状态向量中。归结于广义潮流控制器的状态变量的增量小于现有技术。此外，该方法可以将广义潮流控制器嵌入到电网中后，可以保持牛顿 - 拉夫逊潮流算法的二次收敛特性。

5. 发明申请

US20060282239A1 Method of setting-up steady state model of VSC-based multi-terminal HVDC transmission system 审中-公开
标题翻译：建立基于VSC的多终端HVDC传输系统稳态模型的方法
公开(公告)号：US20060282239A1
公开(公告)日：2006-12-14
申请号：US11148084
申请日：2005-06-08
申请人： Chia-Chi Chu , Sheng-Huei Lee , Hung-Chi Tsai
发明人： Chia-Chi Chu , Sheng-Huei Lee , Hung-Chi Tsai
IPC分类号： G06F17/10
CPC分类号： H02J3/36 , Y02E40/16 , Y02E60/60
摘要： The power flow model of the multiterminal voltage-source converter-based high voltage DC (M-VSC-HVDC) transmission system for large-scale power systems is studied. The mathematical model is derived using the d-q axis decomposition of HVDC's control parameter. The developed model can be applied to all existing shunt voltage-source converter (VSC) based controllers, including Static Synchronous Compensator (STATCOM), point-to-point HVDC system, back-to-back HVDC system and multiterminal HVDC system. A unified procedure is developed for incorporating the proposed model into the conventional Newton-Raphson power flow solver. The IEEE 300-bus test system embedded with multiple HVDC transmission systems under different configurations are investigated. Simulation results reveal that the proposed model is effective and accuracy in meeting various control objectives.
摘要翻译：研究了大容量电力系统多电压电压源转换器高压直流（M-VSC-HVDC）传输系统的功率流模型。数学模型使用HVDC控制参数的d-q轴分解得出。开发的模型可以应用于所有现有的并联电压源转换器（VSC）控制器，包括静态同步补偿器（STATCOM），点对点HVDC系统，背靠背HVDC系统和多终端HVDC系统。开发了将所提出的模型纳入常规牛顿 - 拉夫逊幂流解算器的统一程序。研究了在不同配置下嵌入多个HVDC传输系统的IEEE 300总线测试系统。模拟结果表明，提出的模型在实现各种控制目标方面是有效和准确的。

6. 发明申请

US20180269682A1 MEDIUM VOLTAGE STATIC SYNCHRONOUS COMPENSATOR FOR POWER DISTRIBUTION GRIDS 审中-公开
公开(公告)号：US20180269682A1
公开(公告)日：2018-09-20
申请号：US15725486
申请日：2017-10-05
申请人： American Superconductor Corporation
发明人： Andrew Specht , John R. Brubaker , Mark D. Putnam , Douglas C. Folts , David G. Oteman , Patrick S. Flannery
IPC分类号： H02J3/18
CPC分类号： H02J3/1857 , H02B1/26 , H02B1/565 , H02M2007/4835 , H05K7/20236 , H05K7/20927 , Y02E40/16 , Y02E40/26
摘要： A static synchronous compensator configured to be installed in and provide reactive power to a medium voltage electric distribution system. There is a multi-level cascaded H-bridge (CHB) converter in an enclosure, having a nominal operating voltage in the medium voltage range. There is a first electrical bushing connecting the medium voltage electric distribution system to the input of the CHB converter. There is a second electrical bushing connecting ground or floating ground to the output of the CHB converter. There is a cooling system, which circulates the cooling fluid between in the interior of the enclosure to cool the CHB converter. There is a controller to control the converter to output reactive power at a medium voltage level.

7. 发明授权

US10079558B2 Switching scheme for static synchronous compensators using cascaded H-bridge converters 有权
公开(公告)号：US10079558B2
公开(公告)日：2018-09-18
申请号：US15093842
申请日：2016-04-08
申请人： American Superconductor Corporation
发明人： Patrick S. Flannery
IPC分类号： H02M1/42 , H02M7/537 , H02M7/483 , H02J3/18
CPC分类号： H02M7/483 , H02J3/1857 , H02M2007/4835 , Y02E40/16 , Y02E40/26
摘要： A static synchronous compensator includes at least one converter pole for producing a first phase of an AC voltage waveform having a fundamental cycle. The first phase of the AC voltage waveform includes alternating converter pole charging and discharging regions in each fundamental cycle. The at least one converter pole includes a plurality of cascaded H-bridge cells, each having a DC voltage source and a plurality of switches. The switches are capable of being switched to produce a plurality of switching states. There is a controller configured to control the switching states of the plurality of switches of each of the cascaded H-bridge cells based on the voltages of DC voltage sources of the H-bridge cells and on whether the AC waveform is in the converter pole charging region or the converter pole discharging region.

8. 发明授权

US09774190B2 Multi-level medium voltage data center static synchronous compensator (DCSTATCOM) for active and reactive power control of data centers connected with grid energy storage and smart green distributed energy sources 有权
公开(公告)号：US09774190B2
公开(公告)日：2017-09-26
申请号：US14481904
申请日：2014-09-09
申请人： Inertech IP LLC
发明人： Subrata K. Mondal
IPC分类号： H02J1/10 , H02J3/38 , H02J9/00 , H02J3/32 , H02J3/18 , H02M7/483 , H02J7/34 , H02M1/00
CPC分类号： H02J3/32 , H02J3/1857 , H02J7/345 , H02M7/483 , H02M2001/007 , H02M2007/4835 , Y02E40/16 , Y02E40/26 , Y02E70/40 , Y10T307/344
摘要： Systems and methods for supplying power (both active and reactive) at a medium voltage from a DCSTATCOM to an IT load without using a transformer are disclosed. The DCSTATCOM includes an energy storage device, a two-stage DC-DC converter, and a multi-level inverter, each of which are electrically coupled to a common negative bus. The DC-DC converter may include two stages in a bidirectional configuration. One stage of the DC-DC converter uses a flying capacitor topology. The voltages across the capacitors of the flying capacitor topology are balanced and switching losses are minimized by fixed duty cycle operation. The DC-DC converter generates a high DC voltage from a low or high voltage energy storage device such as batteries and/or ultra-capacitors. The multi-level, neutral point, diode-clamped inverter converts the high DC voltage into a medium AC voltage using a space vector pulse width modulation (SVPWM) technique.

9. 发明授权

US09331482B2 Static synchronous compensator systems and related methods 有权
标题翻译：静态同步补偿器系统及相关方法
公开(公告)号：US09331482B2
公开(公告)日：2016-05-03
申请号：US14071130
申请日：2013-11-04
申请人： North Carolina State University
发明人： Qin Huang
IPC分类号： G05F1/70 , H02J3/18
CPC分类号： H02J3/1828 , H02J3/1842 , Y02E40/16 , Y02E40/22
摘要： Static synchronous compensator (STATCOM) systems and methods are disclosed. An example STATCOM system includes a reactive component configured for electrical connection to a power network. For example, the reactive component may be a capacitor bank. The system also includes an inductor electrically connected in series with the reactive component. Further, the system includes a converter electrically connected in series with the reactive component and the inductor. A method may include using the static synchronous compensator system to provide one of reactive power and active power to the power network.
摘要翻译：公开了静态同步补偿器（STATCOM）系统和方法。示例STATCOM系统包括被配置用于电连接到电力网络的无功部件。例如，无功分量可以是电容器组。该系统还包括与无功部件串联电连接的电感器。此外，该系统包括与无功部件和电感器串联电连接的转换器。一种方法可以包括使用静态同步补偿器系统来向电力网络提供无功功率和有功功率之一。

10. 发明申请

US20130207620A1 Adaptive Controller for STATCOM to Enhance Voltage Stability 有权
标题翻译：用于STATCOM的自适应控制器来增强电压稳定性
公开(公告)号：US20130207620A1
公开(公告)日：2013-08-15
申请号：US13396407
申请日：2012-02-14
申请人： Fangxing Li , Yao Xu , Kevin Tomsovic
发明人： Fangxing Li , Yao Xu , Kevin Tomsovic
IPC分类号： H02P11/00
CPC分类号： H02J3/1842 , Y02E40/16 , Y02E40/22 , Y10T307/516
摘要： An adaptive controller for a static compensator (STATCOM) to enhance voltage stability comprises an outer voltage regulator loop and an inner current regulator loop. Each of the outer loop and the inner loop comprises a proportional integral controller. The outer loop adjusts proportional and integral control gains of voltage regulator. The inner loop adjusts proportional arid integral parts of current regulator gains. The automatic adjustment of these regulator gains is adaptively determined such that the voltage at the controlled bus follows a desired voltage, reference curve over time returning to a desired steady-state condition under various disturbances such as changes in load and/or transmission network. Thus, the adaptive controller can achieve a plug-and-play feature for a STATCOM without human intervention.
摘要翻译：用于增强电压稳定性的静态补偿器（STATCOM）的自适应控制器包括外部电压调节器回路和内部电流调节器回路。外循环和内循环中的每一个包括比例积分控制器。外环调节电压调节器的比例和积分控制增益。内部环路调节电流调节器增益的比例和整数部分。自适应地确定这些调节器增益的自动调节，使得受控总线处的电压遵循期望的电压，参考曲线随着时间的流逝，在诸如负载和/或传输网络的变化的各种干扰下返回到期望的稳态条件。因此，自适应控制器可以在没有人为干预的情况下实现STATCOM的即插即用功能。

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