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1. 发明授权

US10128785B1 Systems and methods for mitigating transient events in a power generation system 有权
公开(公告)号：US10128785B1
公开(公告)日：2018-11-13
申请号：US15601322
申请日：2017-05-22
申请人： General Electric Company
发明人： Jametra Stitt , Timothy LeBlanc , Edward Benya , Tabrez Shakeel , William Adams
IPC分类号： H02P11/00 , H02H7/06 , H02P9/00 , H02P9/10 , H02J3/24 , H02J7/16 , F01D15/10 , G05B15/02 , H02P3/00
CPC分类号： H02P9/102 , F01D15/10 , G05B15/02 , H02J3/24 , H02J7/163
摘要： Embodiments of the disclosure relate to transient event mitigating systems and methods that can be incorporated into a power generation system. The power generation system can include an exciter coupled to an alternating current (AC) generator that provides electric power to power lines. The transient event mitigating system can include an automatic voltage regulator that detects a transient event in one or more of the power lines and configures a power converter to respond to the transient event by increasing an amount of direct current (DC) voltage coupled into the power converter. The power converter can provide the increased DC voltage to an exciter coil of the exciter for a transitory period of time in order to adjust the electric power generated by the AC generator and mitigate adverse effects of the transient event.

2. 发明申请

US20180274383A1 OPTIMIZATION OF GAS TURBINE POWER PLANT RESPONSE DURING POWER SYSTEM TRANSIENTS 审中-公开
公开(公告)号：US20180274383A1
公开(公告)日：2018-09-27
申请号：US15470271
申请日：2017-03-27
申请人： General Electric Company
发明人： Sreedhar Desabhatla , John Huey , Scott Szepek
IPC分类号： F01D15/10 , F01D21/00 , H02P9/10 , H02K7/18 , G05B15/02
CPC分类号： F01D15/10 , F01D21/003 , F05D2220/32 , F05D2270/061 , F05D2270/20 , F05D2270/3061 , F05D2270/31 , H02K7/1823 , H02P9/006 , H02P9/102 , H02P9/107 , H02P2101/00
摘要： The disclosure relates to optimization of gas turbine power plant response during power system transients. In certain embodiments, systems, methods, and apparatus can control a power generating system by using the reactive components of the current and the reactive components of the voltage and the magnitude of the voltage at the generator terminals of a gas turbine generator system. In one embodiment, a system can identify a power system fault based on at least three conditions occurring for a specified duration and at substantially the same time: (1) an increase in the reactive current, (2) a decrease in the magnitude of the voltage, and (3) an increase in the reactive power. In one embodiment, a power system can further detect a remote breaker open (RBO) condition, and distinguish a RBO condition from a power system fault condition.

3. 发明申请

US20180026473A1 METHOD FOR OPERATING AN ACTIVE CONVERTER CONNECTED TO AN ELECTRIC MACHINE AND MEANS FOR THE IMPLEMENTATION THEREOF 审中-公开
公开(公告)号：US20180026473A1
公开(公告)日：2018-01-25
申请号：US15547356
申请日：2016-01-21
申请人： Robert Bosch GmbH
发明人： Paul Mehringer
IPC分类号： H02J7/14 , H02H7/12 , H02P9/48 , H02P29/024 , H02P9/10
CPC分类号： H02J7/1438 , H02H7/12 , H02J7/0031 , H02J7/0063 , H02J2007/0067 , H02P9/102 , H02P9/48 , H02P29/0241
摘要： An active converter connected to an electric machine, including arresting circuits to activate a voltage arresting function from a first point-in-time, and which is configured to only activate a load dump reaction upon activation conditions from a second point-in-time, the activation conditions include that it is determined that at the second point-in-time, a supply-side voltage potential applied to an exciter winding of the electric machine is between the voltage potential applied at the first DC voltage terminal and a ground potential, if the exciter winding is disconnected from the voltage potential of the vehicle electrical system voltage and/or a current flowing through the exciter winding is below a current threshold value and/or after an initial activation of a load dump reaction, after which further load dump reactions were activated, more than a predefined period of time has elapsed and/or more than a predefined number of load dump reactions were activated.

4. 发明授权

US09667189B2 Control of electrically excited synchronous machine drives for ride through and controlled braking operations 有权
公开(公告)号：US09667189B2
公开(公告)日：2017-05-30
申请号：US14837620
申请日：2015-08-27
申请人： ABB Technology Ltd.
发明人： Jun Li , Zhiguo Pan , Hongrae Kim , Wen Ouyang
IPC分类号： H02P1/04 , H02P29/02 , H02P21/00 , H02P3/02 , H02P27/06 , H02P3/22 , H02P3/26 , H02P9/10
CPC分类号： H02P29/032 , H02P3/02 , H02P3/18 , H02P3/22 , H02P3/26 , H02P9/102 , H02P21/0003 , H02P21/14 , H02P27/06
摘要： One exemplary embodiment is method of operating an electrically excited synchronous machine (EESM) system. The system includes a converter operatively coupled with one or more stator windings, an exciter operatively coupled with one or more field windings, a controller operatively coupled with the converter and the exciter, and a power supply operatively coupled with the converter and the exciter. The controller determines whether a power supply fault condition exists and whether EESM system is operating in a motor mode or a generator mode. If the power supply fault condition exists and the EESM system is operating in the motor mode, entering one of a motor ride through control mode and a motor controlled braking control mode If the power supply fault condition exists and the EESM system is operating in the generator mode, entering one of a generator ride through control mode and a generator controlled braking control mode.

5. 发明授权

US09571023B2 Synchronizing an inverter with an alternating voltage source 有权
标题翻译：逆变器与交流电压源同步
公开(公告)号：US09571023B2
公开(公告)日：2017-02-14
申请号：US12694918
申请日：2010-01-27
申请人： Mikko Vertanen
发明人： Mikko Vertanen
IPC分类号： H02P6/18 , H02P9/10
CPC分类号： H02P9/102 , H02P21/22
摘要： A method and device are disclosed for synchronizing an inverter with an alternating voltage source. The method includes measuring a current generated by the alternating voltage source and flowing through diodes of the inverter, determining a phase angle and angular velocity relating to the alternating voltage source from the measured current for enabling synchronization between the inverter and the alternating voltage source, and starting modulation of the inverter according to the obtained phase angle and angular velocity.
摘要翻译：公开了用于使逆变器与交流电压源同步的方法和装置。该方法包括测量由交流电压源产生并流过逆变器的二极管的电流，根据测量的电流确定与交流电压源相关的相位角和角速度，以实现逆变器和交流电压源之间的同步;以及根据获得的相位角和角速度启动逆变器的调制。

6. 发明申请

US20170025978A1 Low-Frequency Band Suppression Enhanced Anti-Reversal Power System Stabilizer 有权
标题翻译：低频带抑制增强型反向电力系统稳定器
公开(公告)号：US20170025978A1
公开(公告)日：2017-01-26
申请号：US15097691
申请日：2016-04-13
申请人： State Grid Zhejiang Electric Power Research Institute , STATE GRID Corporation of China , NR Electric Co., Ltd
发明人： KUAYU WU , CENCEN LU , LONG WU , XIAOMING HUANG , CHENGYU LU , BOLIANG LOU , BING HAN , JIAHUA LU , HONGTAO XIONG , YIJUN SHEN , HAIQING LU
IPC分类号： H02P9/10
CPC分类号： H02P9/102
摘要： A low-frequency band suppression enhanced anti-reversal power system stabilizer is presented by the invention. Currently the widely used PSS2B power system stabilizer needs lead elements above Order 2 to meet the phase compensation requirement of DC blocking signal of active power, thus quickly increasing high-frequency band gain, restricting allowable total setting gain of PSS, limiting low-band gain and reducing low-frequency band suppression ability of power system stabilizer. The invention will add generator speed signal ω (which is treated by DC blocking element and corrected by parallel proportional differential PD) and active power signal Pe (which is treated by DC blocking element and gained by gain factor Ks3) to get equivalent synthetic mechanical power of power system stabilizer. The actual active power signal gained by gain factor KS1 can meet the requirement of phase compensation through Order 1 lead and lag elements, thus increasing allowable total setting gain of PSS and improving the ability of low-frequency band oscillation suppression.
摘要翻译：本发明提出了一种低频带抑制增强型反转电源系统稳定器。目前广泛使用的PSS2B电力系统稳定器需要超过订单2的引线元件，以满足有功功率的直流阻塞信号的相位补偿要求，从而快速增加高频带增益，限制PSS的允许总设定增益，限制低带增益降低电力系统稳定器的低频带抑制能力。本发明将增加发电机速度信号ω（由直流阻塞元件处理并由并联比例差分PD校正）和有功功率信号Pe（由直流阻塞元件处理并通过增益因子Ks3获得）获得等效的合成机械功率的电力系统稳定器。通过增益因子KS1获得的实际有功功率信号可以通过1阶引导和滞后元件满足相位补偿的要求，从而增加了PSS的允许总设定增益，提高了低频带振荡抑制能力。

7. 发明申请

US20160333856A1 VARIABLE IMPEDANCE DEVICE FOR A WIND TURBINE 审中-公开
标题翻译：风力涡轮机的可变阻尼装置
公开(公告)号：US20160333856A1
公开(公告)日：2016-11-17
申请号：US15105967
申请日：2014-12-17
申请人： INGETEAM POWER TECHNOLOGY, S.A.
发明人： Francisco Javier Chivite ZABALZA , Carlos Girones REMIREZ , Ainhoa Carcar MAYOR , Eneko Olea OREGI , Jesus Lopez TABERNA
IPC分类号： F03D9/00 , G05F5/00 , F03D9/25
CPC分类号： F03D9/255 , G05F5/00 , H02H7/06 , H02J3/1807 , H02J3/1835 , H02J3/386 , H02P9/007 , H02P9/102 , H02P9/16 , Y02E10/725 , Y02E10/763 , Y02E40/30
摘要： A wind turbine that includes a housing, an asynchronous generator disposed in the housing and configured to be electrically connected to a power grid connection; a power converter circuit disposed in the housing and configured to be electrically connected to the asynchronous generator; and a variable impedance device disposed in the housing, connected to the generator and configured to limit current by varying impedance in response to a transient current. The wind turbine delivers reactive power to the power grid when the variable impedance device varies impedance in response to the transient current. The variable impedance device can be arranged in series between the asynchronous generator and the power grid connection, or can be in a shunt arrangement between the asynchronous generator and a neural point.
摘要翻译：一种风力涡轮机，包括壳体，设置在壳体中并被配置为电连接到电网连接的异步发电机; 电源转换器电路，其设置在所述壳体中并且被配置为电连接到所述异步发电机; 以及设置在壳体中的可变阻抗装置，其连接到发电机并且被配置为通过响应于瞬态电流而改变阻抗来限制电流。当可变阻抗装置响应于瞬态电流改变阻抗时，风力涡轮机向电网输送无功功率。可变阻抗装置可以串联布置在异步发电机和电网连接之间，或者可以在异步发电机和神经点之间的分流装置中。

8. 发明授权

US09431941B1 Method and apparatus for detecting alternator rectifier diode short fault 有权
标题翻译：交流发电机整流二极管短路故障检测方法及装置
公开(公告)号：US09431941B1
公开(公告)日：2016-08-30
申请号：US14620218
申请日：2015-02-12
申请人： General Electric Company
发明人： Rajeev Verma , Bret Dwayne Worden
IPC分类号： H02K11/00 , H02P9/00 , H02P9/10 , H02H9/00 , H02P101/45
CPC分类号： H02P9/48 , H02P9/102 , Y02E10/725
摘要： Methods for detecting a short fault of an alternator rectifier electronic component include sampling a field winding voltage or current signal of an alternator, during operation of the alternator, and determining a fault ripple period at which the alternator field winding signal exceeds a fault threshold. A short fault of an electronic component of a rectifier coupled to the alternator is detected in the event that the fault ripple period closely matches an alternator armature period. Alternatively or additionally, the sampled field winding signal is band pass filtered, and a short fault is detected in the event that an amplitude of the band pass filtered field winding signal exceeds a fault threshold. The methods can be implemented, for example, by an apparatus that includes a hysteresis frequency counter, a frequency comparator, and a countdown timer.
摘要翻译：用于检测交流发电机整流器电子部件的短路故障的方法包括在交流发电机的运行期间采样交流发电机的励磁绕组电压或电流信号，以及确定交流发电机励磁绕组信号超过故障阈值的故障纹波周期。在故障波动周期与交流发电机电枢周期紧密匹配的情况下，检测到耦合到交流发电机的整流器的电子部件的短路故障。或者或另外，采样的场绕组信号被带通滤波，并且在带通滤波的场绕组信号的幅度超过故障阈值的情况下，检测到短的故障。这些方法可以例如通过包括滞后频率计数器，频率比较器和倒数计时器的装置来实现。

9. 发明授权

US09382855B2 Stationary power plant 有权
标题翻译：固定电厂
公开(公告)号：US09382855B2
公开(公告)日：2016-07-05
申请号：US13534598
申请日：2012-06-27
申请人： Albert Fahringer , Johann Hirzinger , Herbert Schaumberger , Michael Waldhardt , Erich Kruckenhauser , Oscar Sarmiento
发明人： Albert Fahringer , Johann Hirzinger , Herbert Schaumberger , Michael Waldhardt , Erich Kruckenhauser , Oscar Sarmiento
IPC分类号： F02D29/00 , F02D29/06 , F02D17/00 , F02D31/00 , F02D41/02 , F02P5/15 , H02P9/04 , H02P9/10 , F02D19/02 , F02D41/00 , F02D41/12 , F02M21/02
CPC分类号： F02D29/06 , F02D17/00 , F02D19/023 , F02D31/001 , F02D31/009 , F02D41/0097 , F02D41/0205 , F02D41/123 , F02D2200/101 , F02M21/0209 , F02P5/1512 , H02P9/04 , H02P9/102 , Y02T10/32 , Y02T10/46
摘要： The invention relates to a method for operating a stationary power plant, wherein a fuel/air mixture is burned in an internal combustion engine and wherein the internal combustion engine drives an alternating current generator, which is connected to an energy supply network and provides energy to the energy supply network, wherein if the actual rotational speed of the alternating current generator or of the internal combustion engine exceeds a predefinable maximum value due to a failure of the energy supply network, the combustion in the internal combustion engine is stopped at least partially, while the connection to the energy supply network is maintained.
摘要翻译：本发明涉及一种用于操作固定发电厂的方法，其中燃料/空气混合物在内燃机中燃烧，并且其中所述内燃机驱动交流发电机，所述交流发电机连接到能量供应网络并且向所述能量供给网络，其中如果所述交流发电机或所述内燃机的实际转速由于所述能量供应网络的故障而超过预定的最大值，则所述内燃机中的燃烧至少部分停止，同时保持与能量供应网络的连接。

10. 发明授权

US09350284B2 Power conversion device 有权
标题翻译：电源转换装置
公开(公告)号：US09350284B2
公开(公告)日：2016-05-24
申请号：US14355452
申请日：2012-10-22
申请人： Hitachi, Ltd.
发明人： Toshifumi Sakai , Koichiro Nagata , Yoshitaka Iwaji , Motomi Shimada
IPC分类号： H02M7/00 , H02P27/08 , H02P23/04 , H02P21/05 , H02P23/00 , H02P27/06 , H02P9/10
CPC分类号： H02P23/04 , H02P9/102 , H02P21/05 , H02P21/22 , H02P27/06
摘要： In a system for driving an electric motor by an engine generator, there is a possibility that oscillation and d-axis current are increased. In an engine generator system, a power converter (105) controls a generator (104) so that the phase of an oscillating component included in the d-axis current in the rotor magnetic flux direction of the generator (104) advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104), and further using q-axis voltage adjusting device (118) so that the phase of an oscillating component included in the q-axis current advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104).
摘要翻译：在用于通过发动机发电机驱动电动机的系统中，存在振荡和d轴电流增加的可能性。在发动机发电机系统中，功率转换器（105）控制发电机（104），使得包括在发电机（104）的转子磁通方向上的d轴电流中的振荡分量的相位前进90度或更多地涉及包括在发电机（104）的旋转电角频率中的相同频率的振荡分量的相位，并且还使用q轴电压调节装置（118），使得包括在相对于包含在发电机（104）的旋转电角频率中的相同频率的振荡分量的相位，q轴电流前进90度以上。

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