公开(公告)号：WO2017008245A1

公开(公告)日：2017-01-19

申请号：PCT/CN2015/083967

申请日：2015-07-14

Applicant: ABB TECHNOLOGY LTD ,  LI, Tinho ,  XIE, Hailian ,  JOHANSSON, Nicklas

Inventor： LI, Tinho ,  XIE, Hailian ,  JOHANSSON, Nicklas

IPC: H02J3/18

CPC classification number: H02J3/1814 ,  Y02E40/10 ,  Y02E40/18

Abstract: A transformer-less static synchronous series compensator for an AC electrical power transmission system having a transmission line carrying an AC current and a method therefor. The transformer-less static synchronous series compensator includes a multiple of voltage source converters (100a, 100b... 100n), each of which having DC input and AC output and being configured to generate an alternating voltage with controllable magnitude and controllable phase angle across the AC output; wherein the AC outputs of the multiple of voltage source converters are configured for parallel-injection of the generated alternating voltages into a phase of the transmission line (A, B, C). The AC transmission line phase current can be distributed to the multiple of inputting the alternating voltages in parallel into the phase of the AC transmission line, and thus the current handling capability requirement for power semiconductor switches used in each of the voltage source converter can be significantly reduced.

Abstract translation: 一种具有承载AC电流的传输线的交流电力传输系统的无变压器静态同步串联补偿器及其方法。 无变压器静态同步串联补偿器包括多个电压源转换器（100a，100b ... 100n），每个电压源转换器具有DC输入和AC输出，并且被配置为产生具有可控幅度和可控相位角的交流电压 交流输出; 其中所述多个电压源转换器的AC输出被配置用于将所产生的交流电压并行注入到所述传输线（A，B，C）的相位中。 交流传输线相位电流可以分配到交流电压并联输入到交流传输线的相位的倍数，因此在每个电压源转换器中使用的功率半导体开关的当前处理能力要求可以显着 降低。

公开(公告)号：WO2017000224A1

公开(公告)日：2017-01-05

申请号：PCT/CN2015/082836

申请日：2015-06-30

Applicant: ABB TECHNOLOGY LTD ,  XIE, Hailian ,  LI, Tinho

Inventor： XIE, Hailian ,  LI, Tinho

IPC: H02J3/18

CPC classification number: H02J3/18 ,  Y02E40/10

Abstract: A transformer-less static synchronous series compensator (SSSC) for an AC electrical power transmission system having a transmission line carrying an AC current and a method for protection against electrical damage are provided. The transformer-less SSSC including: a voltage source converter (100) having a DC input and an AC output and being configured to generate an alternating voltage with controllable magnitude and controllable phase angle across the AC output, the AC output being configured to inject the generated alternating voltage into a phase of the transmission line; a filter circuit (101) being arranged coupled with the voltage source converter (100) in parallel across the AC output of the voltage source converter (100); a bypass circuit (102); and an electrical current limiting circuit (103) being coupled with the bypass circuit (102) in series; wherein: the series-coupled current bypass circuit (102) and electrical current limiting circuit (103) are coupled with a first capacitive element (1011) of the filter circuit (101) in parallel. The transient nature of the electrical current limiting circuit (103) will limit the increase in the current flowing through the thyristor of the bypass circuit (102) thus limit the current peak when the bypass circuit (102) is switched on. Consequently, the current limiting circuit (103) acts like limiting the current transients generated from the influences of both of the line fault current and the discharging current.

Abstract translation: 提供了一种用于具有承载AC电流的传输线的AC电力传输系统的无变压器静态同步串联补偿器（SSSC）和用于防止电气损坏的方法。 该无变压器SSSC包括：具有DC输入和AC输出的电压源转换器（100），并且被配置为产生跨越AC输出的可控幅度和可控相位角的交流电压，AC输出被配置为将 产生交流电压进入传输线的相位; 滤波器电路（101）与电压源转换器（100）并联布置在电压源转换器（100）的AC输出端; 旁路电路（102）; 和与所述旁路电路（102）串联耦合的限流电路（103）; 其中：所述串联耦合电流旁路电路（102）和限流电路（103）与所述滤波电路（101）的第一电容元件（1011）并联耦合。 电流限制电路（103）的瞬时特性将限制流过旁路电路（102）的晶闸管的电流的增加，从而限制旁路电路（102）接通时的电流峰值。 因此，限流电路103的作用就是限制从线路故障电流和放电电流两者的影响产生的电流瞬变。

公开(公告)号：WO2017008245A9

公开(公告)日：2017-01-19

申请号：PCT/CN2015/083967

申请日：2015-07-14

Applicant: ABB TECHNOLOGY LTD ,  LI, Tinho ,  XIE, Hailian ,  JOHANSSON, Nicklas

Inventor： LI, Tinho ,  XIE, Hailian ,  JOHANSSON, Nicklas

IPC: H02J3/18

Abstract: A transformer-less static synchronous series compensator for an AC electrical power transmission system having a transmission line carrying an AC current and a method therefor. The transformer-less static synchronous series compensator includes a multiple of voltage source converters (100a, 100b... 100n), each of which having DC input and AC output and being configured to generate an alternating voltage with controllable magnitude and controllable phase angle across the AC output; wherein the AC outputs of the multiple of voltage source converters are configured for parallel-injection of the generated alternating voltages into a phase of the transmission line (A, B, C). The AC transmission line phase current can be distributed to the multiple of inputting the alternating voltages in parallel into the phase of the AC transmission line, and thus the current handling capability requirement for power semiconductor switches used in each of the voltage source converter can be significantly reduced.

公开(公告)号：WO2015196482A1

公开(公告)日：2015-12-30

申请号：PCT/CN2014/081035

申请日：2014-06-27

Applicant: ABB TECHNOLOGY LTD ,  LIU, Yuan ,  XIE, Hailian ,  YUE, Chengyan

Inventor： LIU, Yuan ,  XIE, Hailian ,  YUE, Chengyan

IPC: H02J3/28

CPC classification number: H02J3/386 ,  F03D7/0284 ,  F03D9/11 ,  F05B2270/1033 ,  H02J3/28 ,  H02J3/32 ,  H02J7/34 ,  H02J2003/007 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E10/766 ,  Y02E60/76 ,  Y02E70/30 ,  Y04S40/22

Abstract: A method and system for determining a reference power for an energy storage system (ESS) in a wind power generation system. The method comprises filtering an actual wind power output to obtain a desired power output delivered to a grid; determining a reference output power for the energy storage system from the actual wind power output and the desired power output delivered to the grid; and adjusting the reference output power for the energy storage system based on a change in predicted wind power output at the next time point. Therefore it can provide a direct control strategy for smoothing wind farm output fluctuations and limiting power ramping rate within required range, which is more practically feasible than the existing strategies and could result in better control performance.

Abstract translation: 一种用于确定风力发电系统中的能量存储系统（ESS）的参考功率的方法和系统。 该方法包括过滤实际风力发电输出以获得传送到电网的期望功率输出; 从实际风力输出和输送到电网的期望功率输出确定能量存储系统的参考输出功率; 并且基于在下一个时间点的预测风力输出的变化来调节能量存储系统的参考输出功率。 因此可以提供一个直接控制策略，使风电场输出波动平滑，并将功率斜率限制在所需范围内，这比现有策略更为实际可行，并可能导致更好的控制性能。

公开(公告)号：WO2014117388A1

公开(公告)日：2014-08-07

申请号：PCT/CN2013/071267

申请日：2013-02-01

Applicant: ABB TECHNOLOGY LTD ,  XIE, Hailian ,  LI, Bin ,  HEYMAN, Carl

Inventor： XIE, Hailian ,  LI, Bin ,  HEYMAN, Carl

IPC: H02J3/24

CPC classification number: H02J3/24 ,  H02J3/1807 ,  Y02E40/30

Abstract: A method and an apparatus for mitigating sub-synchronous resonance (SSR) in a power transmission system are provided. The method comprises: checking whether the SSR happens in the power transmission system (S201); checking whether the SSR is undamped (S202); providing a command to bypass a series capacitor (SC) unit when the SSR happens and is undamped (S203). In some embodiments, the method further comprises providing a command to reinsert the SC unit into the power transmission system when the transmission level of the power transmission system is determined to be higher than a predetermined level and there is no fault in the power system. The method can mitigate SSR automatically in a more efficient and effective way.

Abstract translation: 提供了用于减轻电力传输系统中的次同步谐振（SSR）的方法和装置。 该方法包括：检查SSR是否发生在电力传输系统中（S201）; 检查SSR是否未封装（S202）; 提供当SSR发生并且无阻尼时绕过串联电容器（SC）单元的命令（S203）。 在一些实施例中，该方法还包括当电力传输系统的传输电平被确定为高于预定电平且电力系统中没有故障时，提供命令将SC单元重新插入电力传输系统。 该方法可以以更有效和有效的方式自动减轻SSR。

公开(公告)号：WO2021146995A1

公开(公告)日：2021-07-29

申请号：PCT/CN2020/073767

申请日：2020-01-22

Applicant: ABB POWER GRIDS SWITZERLAND AG ,  YANG, Xiaobo ,  XIE, Hailian ,  YUAN, Chunming ,  ANDERSSON, Mats

Inventor： YANG, Xiaobo ,  XIE, Hailian ,  YUAN, Chunming ,  ANDERSSON, Mats

IPC: H02J3/00

Abstract: An apparatus and method of power transmission, the apparatus of power transmission implemented at a transmitting station comprises: a first converter (210) configured to convert a first three-phase AC component of a first frequency into a second three-phase AC component of a second frequency, the second frequency being less than the first frequency and greater than a predetermined frequency; and a first controller (220) coupled to the first converter (210) and configured to cause the second three-phase AC component to be transmitted in an AC transmission line (150). The apparatus of power transmission implemented at a receiving station comprises: a second controller (510) configured to cause the second three-phase AC component to be received from the AC transmission line (150); and a second converter (520) coupled to the second controller (510) and configured to convert the second three-phase AC component into the first three-phase AC component. In this way, the limitation from the space charge accumulation of cable system can be eliminated, and an improvement of the power transmission capacity can be facilitated.

公开(公告)号：WO2020146999A1

公开(公告)日：2020-07-23

申请号：PCT/CN2019/071743

申请日：2019-01-15

Applicant: ABB SCHWEIZ AG ,  HUANG, Xing ,  YANG, Xiaobo ,  LIU, Kai ,  XIE, Hailian

Inventor： HUANG, Xing ,  YANG, Xiaobo ,  LIU, Kai ,  XIE, Hailian

IPC: H02J3/38 ,  H02J50/10

Abstract: A PV power converter (4a, 4b, 4c, 4d), its control method and a PV power plant, the PV power converter includes: output terminals, input terminals being configured to be electrically coupled to output ends of PV array (2a, 2b, 2c, 2d), a power conversion circuit being configured to convert power supplied from the PV array (2a, 2b, 2c, 2d), and output the converted power at the output terminals, having at least one power switch being electrically inserted between the input terminals for bypassing a flow of the converted power around the output terminals, and a local controller (9a, 9b, 9c, 9d) being configured to close the power switch in response to an occurrence of a fault external to the PV power converter (4a, 4b, 4c, 4d) and keep the power switch closed for a predetermined time interval longer than a switching period of the power conversion circuit. This is helpful for decreasing the DC short circuit value while not relying on the conventional fault clear devices, such like fuses and circuit breaker. Consequently, this makes the system cheaper by not using the sorts of fault protection devices.

公开(公告)号：WO2017210892A1

公开(公告)日：2017-12-14

申请号：PCT/CN2016/085264

申请日：2016-06-08

Applicant: ABB SCHWEIZ AG ,  ANDERSSON, Mats ,  CAI, Rong ,  XIE, Hailian ,  ZHANG, Lidong

Inventor： ANDERSSON, Mats ,  CAI, Rong ,  XIE, Hailian ,  ZHANG, Lidong

IPC: H02J3/36

CPC classification number: H02J3/36 ,  Y02E60/60

Abstract: It provides a control system for LCC of an HVDC system and a control method therefor. The control system includes: a first measurement unit (20) being configured to provide a current magnitude measurement indicative of a magnitude of DC current of the HVDC system; and a controller (21) being configured to increase a first extinction angle at which the controlled LCC operates to a second extinction angle in response to that the current magnitude measurement exceeds a current reference level in order to avoid commutation failure of the controlled LCC. By using the solutions according to the HVDC system with increase of extinction angle of the LCC, it is possible to decrease the probability of commutation failures caused by a rapid rise of the DC current of the HVDC system. The overall AC and DC power system reliability and stability is improved.

Abstract translation: 它提供了用于HVDC系统的LCC的控制系统及其控制方法。 所述控制系统包括：第一测量单元（20），其被配置为提供指示所述HVDC系统的DC电流的大小的电流量值测量值; 以及控制器（21），被配置为响应于所述电流幅度测量值超过电流参考水平而将所述受控LCC操作的第一消光角增加到第二消光角，以避免所述受控LCC的换相失败。 通过使用根据HVDC系统的解决方案，随着LCC的消光角度的增加，可以降低由HVDC系统的DC电流的快速上升引起的换相失败的可能性。 整个交流和直流电力系统的可靠性和稳定性得到改善。

公开(公告)号：WO2021168791A1

公开(公告)日：2021-09-02

申请号：PCT/CN2020/077183

申请日：2020-02-28

Applicant: ABB SCHWEIZ AG ,  HUANG, Xing ,  XIE, Hailian ,  PEI, Guangming ,  WEI, Hua ,  LI, Min

Inventor： HUANG, Xing ,  XIE, Hailian ,  PEI, Guangming ,  WEI, Hua ,  LI, Min

IPC: H02M1/12

Abstract: An apparatus and a method for controlling a delta-connected cascaded multilevel converter,the apparatus (100) for controlling a delta-connected cascaded multilevel converter (110) comprises: a converter controller (102) configured to: receive current signals indicating phase currents flowing through respective phase arms of the converter (110); determine a harmonic current signal indicating a circulating current of the converter (110) from the current signals; and generate, based on the determined harmonic current signal and a reference current signal, a harmonic voltage signal to cause an amplitude of the circulating current flowing through the phase arms of the converter (110) to be a predetermined amplitude.

公开(公告)号：WO2018058351A1

公开(公告)日：2018-04-05

申请号：PCT/CN2016/100510

申请日：2016-09-28

Applicant: ABB SCHWEIZ AG ,  GE, Junjie ,  HUANG, Xing ,  XIE, Hailian

Inventor： GE, Junjie ,  HUANG, Xing ,  XIE, Hailian

IPC: H02J3/38 ,  G05F1/67

Abstract: It provides control system and photovoltaic system and micro-grid using the same and method thereof. The control system for controlling a photovoltaic converter includes: a first input, for receiving first signals indicating first sampling values of an input current of the photovoltaic converter provided by a solar panel; a second input, for receiving second signals indicating second sampling values of an input voltage of the photovoltaic converter provided by the solar panel; a third input, for receiving third signals indicating third sampling values of an output voltage of the photovoltaic converter; and a controller, for first regulating the output voltage of the photovoltaic converter in a direction towards a reference voltage based on the third sampling value by regulating the input voltage by first voltage change of a first predetermined level; wherein: the controller is further adapted for monitoring a trend of the input voltage and power provided by the solar panel based on the first sampling values and the second sampling values for the previous sampling time points and the current sampling time point, and suspending the first regulation in case that the trend changes. This allows for an improvement of transient response of the control system and preventing possible overshooting of a lower input voltage even when the solar panel operating point is relatively far away from the MPP.

Abstract translation: 它提供控制系统和使用其的光伏系统和微电网及其方法。 用于控制光伏转换器的控制系统包括：第一输入，用于接收指示由太阳能电池板提供的光电转换器的输入电流的第一采样值的第一信号; 第二输入，用于接收指示由太阳能电池板提供的光伏转换器的输入电压的第二采样值的第二信号; 第三输入，用于接收指示所述光电转换器的输出电压的第三采样值的第三信号; 以及控制器，用于首先通过以第一预定电平的第一电压变化来调节输入电压，基于第三采样值在朝向参考电压的方向上调节光电转换器的输出电压; 其特征在于：所述控制器还用于基于所述第一采样值和所述第二采样值针对所述先前采样时间点和所述当前采样时间点监测所述太阳能电池板提供的输入电压和功率的趋势， 在趋势发生变化的情况下进行监管。 这允许改善控制系统的瞬态响应，并且即使在太阳能电池板操作点距离MPP相对较远时也可以防止较低输入电压的可能的过冲。