公开(公告)号：EP3419137A1

公开(公告)日：2018-12-26

申请号：EP17840585.8

申请日：2017-06-29

Applicant: Jiangsu Goldwind Science & Technology Co., Ltd.

Inventor： ZHENG, Dehua ,  ZHANG, Wei ,  WEI, Dan ,  QIU, Fudong

IPC: H02J3/16 ,  H02J3/38

CPC classification number: H02J3/16 ,  H02J3/381 ,  H02J2003/388 ,  Y02E40/30 ,  Y02E40/34 ,  Y02P80/14

Abstract: Provided are a micro-grid dynamic stability control system and a micro-grid dynamic stability control method. The system includes: a micro-grid dynamic stability control device (127), configured to acquire a real-time voltage and a real-time current of a bus and calculate a power factor based on the real-time voltage and the real-time current; a central control device (101), configured to receive the power factor and transmit a reactive power control instruction in a case that the power factor is lower than a predefined threshold; and at least one local control device, configured to receive the reactive power control instruction and transmit a control signal to the micro-grid dynamic stability control device and at least one distributed power supply controlled by the at least one local control device. The micro-grid dynamic stability control device, in response to the control signal, compensates the voltage of the bus by means of droop control, and the at least one distributed power supply, in response to the control signal, outputs a reactive power to the bus to increase the power factor of the bus.

公开(公告)号：EP2719067B1

公开(公告)日：2018-12-26

申请号：EP11724241.2

申请日：2011-06-10

Applicant: ABB Schweiz AG

Inventor： HASLER, Jean-Philippe

IPC: H02M7/483 ,  H02M1/32 ,  H02M1/36 ,  H02J3/18

CPC classification number: H02J7/00 ,  H02J3/18 ,  H02M1/36 ,  H02M7/483 ,  H02M2001/325 ,  H02M2007/4835 ,  Y02E40/30

Abstract: A method in a controller for energizing a chain-link converter including one or more phase legs, each phase leg including a number of series-connected converter cells, each converter cell including four valves arranged in an H-bridge connection with a DC capacitor. Each valve in turn includes a semiconductor switch in parallel with a diode. The method includes the steps of: charging the DC capacitor of each converter cell to a voltage level at which the semiconductor switches are controllable but below their nominal voltage; diagnosing the converter cells so as to detect failed components thereof; bypassing faulty components in a controlled manner; charging the DC capacitors to their nominal voltage. The invention also relates to a controller, computer programs and computer program products.

公开(公告)号：EP3376625A1

公开(公告)日：2018-09-19

申请号：EP17868494.0

申请日：2017-07-07

Applicant: Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd.

Inventor： QIAO, Yuan ,  ZHANG, Yi ,  XIAO, Di

IPC: H02J3/16

CPC classification number: H02J3/18 ,  H02J3/383 ,  H02J3/386 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E40/30 ,  Y02E40/34

Abstract: Provided are a reactive power control method, a reactive power control device and a reactive power control system. The device includes: a communication interface (201), configured to receive a reactive power requirement command; an input interface (202), configured to acquire an electrical quantity parameter of a preset control point; a strategy calculation module (203), configured to calculate a target reactive power value meeting the reactive power requirement command based on the electrical quantity parameter, and allocate reactive power to be provided by a regulatable reactive device based on the target reactive power value; and an output interface (204), configured to send a command for providing the allocated reactive power to the regulatable reactive device. Multiple types of coordinated control are achieved, power loss is reduced and power generation benefit is increased.

公开(公告)号：EP3341744A1

公开(公告)日：2018-07-04

申请号：EP16839936.8

申请日：2016-08-22

Applicant: Eaton Intelligent Power Limited

Inventor： HASHMI, Mohammad Umar ,  NOWAK, Michael Paul ,  FELLERS, Clay Lynwood ,  FENDER, Karl Eric ,  SHARMA, Santosh Kumar ,  AL-ATAT, Hassan ,  GONZALEZ, Damian Antonio ,  PRATAP, Nudurupati Naga Vasishta

IPC: G01R31/02 ,  G01R31/28 ,  G01R27/00

CPC classification number: G01R31/028 ,  G01R31/40 ,  G01R31/44 ,  H02H7/16 ,  H02J3/18 ,  Y02E40/30

Abstract: A first electrical response of a capacitor bank is accessed, the capacitor bank including a plurality of capacitor units arranged in a fixed spatial relationship with each other, each capacitor unit having a nominal impedance; a test electrical signal is provided to the capacitor bank; a second electrical response of the capacitor bank is measured after providing the test electrical signal to the capacitor bank; the first electrical response of the capacitor bank and the second response of the capacitor bank are compared; and whether an impedance of one or more capacitor units in the capacitor bank has changed relative to the nominal impedance is determined based on the comparison.

公开(公告)号：EP3289676A1

公开(公告)日：2018-03-07

申请号：EP16787049.2

申请日：2016-04-27

Applicant: ABB Schweiz AG ,  Das, Debrup

Inventor： DAS, Debrup

IPC: H02M5/14 ,  H03H7/21 ,  H03H7/46

CPC classification number: H02J3/06 ,  H02J3/18 ,  H02J3/1807 ,  H02J3/1878 ,  Y02E40/18 ,  Y02E40/30

Abstract: A series injection device includes a power splitter coupled to two or more lines of an AC power system. The power splitter includes a coupling transformer for each phase of a single phase or polyphase AC circuit that includes the two or more lines. Each of the coupling transformers couples one of the phases of the two or more lines. The power splitter is configured to inject a first voltage of a first polarity into one or more of the two or more lines and inject a second voltage of a second polarity opposite the first polarity into at least one of the two or more lines via the same coupling transformers used to inject the first voltage. The first and the second voltages are controllable, and may or may not be independently variable.

公开(公告)号：EP3280021A1

公开(公告)日：2018-02-07

申请号：EP17183973.1

申请日：2017-07-31

Applicant: Senvion GmbH

Inventor： Koestl, Tobias

IPC: H02J3/18 ,  H02J3/38

CPC classification number: H02J3/386 ,  H02J3/18 ,  Y02E10/763 ,  Y02E40/30

Abstract: Verfahren sowie Windpark zum Regeln einer Blindleistungsabgabe des Windparks. Die Blindleistungsabgabe des Windparks wird vom Parkmaster (5) anhand eines Vorgaberegimes (56) geregelt. Erfindungsgemäß vorgesehen ist bei einem Betrieb des Windparks unter Normal-Netzbedingungen: Ermitteln eines tatsächlichen Blindleistungsstellvermögens, Prüfen ob dieses über einem einstellbaren Schwellwert liegt, wenn dies der Fall ist, dann Abgeben von Blindleistung entsprechend dem Vorgaberegime (56), wenn dies nicht der Fall ist, dann Umschalten in ein Ersatzregime (57), wobei das Ersatzregime (57) sich hinsichtlich der Blindleistungsabgabe von dem Vorgaberegime (56) unterscheidet. Damit kann auf Parkebene in Abhängigkeit von dem verfügbaren Blindleistungsstellvermögen auf ein alternatives (schonenderes) Regime umgeschaltet werden. Damit kann eine Überlastung der verbliebenen (aktiven) Windenergieanlagen (1) wirksam vermieden werden. Das macht den Windpark robuster. Es kann sogar eine Regelreserve erhalten bleiben, sodass bei weiteren Spannungsabweichungen noch zusätzliche Blindleistung abgegeben werden kann. Die Netzstabilität verbessert sich damit.

Abstract translation: 过程和风力发电场用于控制风电场的无功功率输出。 风电场的无功功率输出由园区大师（5）根据默认制度（56）进行调整。 据的正常供应条件下的风电场的操作过程中提供了本发明：确定实际的无功功率调整资产，检查这是否高于可调节的阈值，如果是这样的话，则提供对应于预置方案（56）的无功功率时，不是这种情况 然后切换到替代方案（57），其中替换方案（57）与无功功率输出中的默认方案（56）不同。 因此，在停车层面，根据可用的无功功率能力，可以切换到另一种（温和的）制度。 因此，可以有效地避免剩余的（主动）风力涡轮机（1）的过载。 这使得风电场更加强劲。 甚至有可能保持控制储备，以便在进一步的电压偏差情况下可以输送额外的无功功率。 网络稳定性随之提高。

公开(公告)号：EP3266111A1

公开(公告)日：2018-01-10

申请号：EP16758462.2

申请日：2016-03-01

Applicant: Edge Electrons Limited

Inventor： STEWART, Neal George ,  CHENG, Wing Ling

IPC: H04B3/54 ,  H02M1/12

CPC classification number: H02J3/1828 ,  H04B3/54 ,  H04B3/542 ,  H04B3/546 ,  H04B2203/5416 ,  H04B2203/5491 ,  Y02E40/30

Abstract: Audio Frequency Load Control (AFLC) signal processing electronics added to a power factor correction (PFC) unit allowing the AFLC system to operate without the need of large and heavy passive bypass or blocking filters at the PFC installations. The AFLC signal processing electronics a first group of additional electronics tuned to the AFLC frequency for detecting the AFLC carrier signal; and a second group of additional electronics for driving an AFLC impedance switch that is connected in parallel with an AFLC impedance. The AFLC impedance is connected in series with the PFC capacitors, and is sufficiently large to offer significant impedance in series with the PFC capacitors that allows the AFLC signal to bypass the PFC unit.

公开(公告)号：EP3264121A1

公开(公告)日：2018-01-03

申请号：EP17174807.2

申请日：2017-06-07

Applicant: General Electric Company

Inventor： BERKCAN, Ertugrul ,  ADAMIAK, Mark Gerard ,  YOUNSI, Karim ,  DEKATE, Sachin N. ,  RAGHAVAN, Kamala C.

IPC: G01R31/36 ,  G01R31/02 ,  H01G9/14 ,  H02H7/16

CPC classification number: G01R27/2605 ,  G01R31/028 ,  G01R31/3689 ,  G08B21/182 ,  G08C23/04 ,  G08C23/06 ,  H01G9/14 ,  H02H7/16 ,  H02J3/18 ,  H04B10/071 ,  Y02E40/30

Abstract: A monitoring system includes a capacitor can having one or more capacitors. The monitoring system includes an antenna. The monitoring system includes at least one sensor disposed within the capacitor can and configured to detect an operating characteristic associated with health of the one or more capacitors of the capacitor can. The monitoring system includes a processor configured to receive a first signal from the at least one sensor indicative of the operating characteristic. The processor is configured to send a second signal, via the antenna, indicative of a value of the operating characteristic to a receiving device outside of the capacitor can.

Abstract translation: 监控系统包括具有一个或多个电容器的电容器罐。 监测系统包括一个天线。 该监测系统包括至少一个传感器，该至少一个传感器设置在电容器罐内并且被配置为检测与电容器罐的一个或多个电容器的健康相关联的操作特性。 该监测系统包括处理器，该处理器被配置为从该至少一个传感器接收指示该操作特性的第一信号。 处理器被配置为经由天线向电容器罐外部的接收装置发送指示操作特性的值的第二信号。

公开(公告)号：EP2722955A3

公开(公告)日：2017-10-18

申请号：EP13188676.4

申请日：2013-10-15

Applicant: Regal Beloit America, Inc.

Inventor： Hyypio, David Bruce ,  Mychal, Myron Roman

IPC: H02J3/16 ,  H02P9/14 ,  H02J3/18

CPC classification number: H02P9/14 ,  H02J3/16 ,  H02J3/18 ,  Y02E40/30 ,  Y02E40/74 ,  Y04S10/22

Abstract: Systems, methods, and a voltage regulator are provided for tuning reactive droop compensation of a generator in a parallel power generation system. The voltage regulator is configured to compute a simulated droop compensation voltage for the generator and control an excitation signal to the generator based at least in part on the simulated droop compensation voltage.

Abstract translation: 系统，方法和电压调节器用于调节并联发电系统中的发电机的无功下垂补偿。 电压调节器被配置为计算发电机的模拟下垂补偿电压并且至少部分地基于模拟的下垂补偿电压来控制发电机的激励信号。

公开(公告)号：EP2375563A4

公开(公告)日：2017-08-23

申请号：EP10703790

申请日：2010-02-18

Applicant: MITSUBISHI HEAVY IND LTD

Inventor： MINAMI TOHRU ,  FUKUDA MITSUYOSHI ,  IRIE EIJI

IPC: H02P9/00 ,  H02J3/18 ,  H02J3/38

CPC classification number: H02J3/1821 ,  F03D80/50 ,  F05B2220/70644 ,  H02J3/386 ,  Y02E10/725 ,  Y02E10/763 ,  Y02E40/30

Abstract: The present invention provides a maintenance operation method for a wind turbine generator and a wind turbine generator, which can effectively utilize a phase advance capacitor equipped in the wind turbine generator and contribute to the phase factor improvement of the system side. A maintenance operation method for a wind turbine generator including an induction generator 3 driven by rotation of blades 2, a power output line 5 for outputting power of the induction generator 3 to a distribution system 5, and at least one phase advance capacitor 10 parallel-connected to the power output line, comprises: a first step of releasing connection between the phase advanced capacitor 10 and the power output line 5 when a maintenance mode is selected; and a second step of returning the connection between the phase advanced capacitor 10 and the power output line 5 by a manual operation or an automatic operation, wherein the phase advance capacitor 10 returned to the connection with the power output line 5 performs a power factor improvement of reactor loads 53, 54 in the distribution system 50 side through a linkage portion 60 with the distribution system 50.

Abstract translation: 本发明提供一种风力发电装置及风力发电装置的维护运转方法，能够有效地利用风力发电装置所具备的相位超前电容器，有助于系统侧的相位系数提高。 一种风力发电装置的维护运转方法，该风力发电装置具有由叶片2的旋转驱动的感应发电机3，将该感应发电机3的电力向配电系统5输出的电力输出线5，以及至少一个相位超前电容器10， 包括：第一步骤，当选择维护模式时，释放相位超前电容器10和功率输出线路5之间的连接; 以及通过手动操作或自动操作使相位提前电容器10与电力输出线5之间的连接返回的第二步骤，其中，返回到与电力输出线5连接的相位超前电容器10执行功率因数提高 通过与分配系统50的连接部分60在分配系统50侧的反应器负载53,54之间。