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公开(公告)号：US08798800B2
公开(公告)日：2014-08-05
申请号：US13323432
申请日：2011-12-12
申请人： Bertil Berggren , Petr Korba , Rajat Majumder , Swakshar Ray
发明人： Bertil Berggren , Petr Korba , Rajat Majumder , Swakshar Ray
CPC分类号： H02J3/24
摘要： The invention provides improved control of a power transmission system having a first group of measurement units in a first geographical area providing a first set of phasors and a second group of measurement units in a second geographical area providing a second set of phasors, where the phasors in the sets are generated at the same instant in time. In this system the power control device includes a phasor aligning unit that time aligns the first and second sets of phasors and a control unit that compares each set of phasors with a corresponding phasor number threshold, determines that a first control condition is fulfilled if each phasor number threshold has been exceeded and enables the provision of a common signal if the first control condition is fulfilled. The common signal is based on the obtained phasors in the first and second sets.
摘要翻译： 本发明提供了一种具有在第一地理区域中提供第一组相量的第一组测量单元和第二组测量单元的功率传输系统的改进的控制，第二组测量单元提供第二组相量，其中相量 这些集合在同一时刻产生。 在该系统中，功率控制装置包括时间对准第一和第二组相量的相量对准单元以及将每组相量与相应的相量数阈值进行比较的控制单元，如果每个相量确定第一个控制条件满足 已经超过了数字阈值，并且如果满足第一控制条件，则能够提供公共信号。 公共信号基于第一和第二组中获得的相量。
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公开(公告)号：US08170723B2
公开(公告)日：2012-05-01
申请号：US12418362
申请日：2009-04-03
申请人： Bertil Berggren , Mats Larsson , Tord Bengtsson , Petr Korba , Alexandre Oudalov
发明人： Bertil Berggren , Mats Larsson , Tord Bengtsson , Petr Korba , Alexandre Oudalov
IPC分类号： G06F19/00
CPC分类号： H02J3/24 , H02J3/005 , Y02E60/728 , Y04S10/265
摘要： The present disclosure relates to power system sensitivities as computed from power flow parameters and control parameters of a Power Flow Control Device (PFC). To this end, control parameter variations are applied to or generated by a PFC, and comprise variations in a control input u, a control effort e (injected series voltage, inserted series reactance), or a control effect q (power flow, active power transfer, phase-shift, current). A power flow response measuring unit measures a variation of a power flow response such as current, active or apparent power, in a way sufficiently synchronized with the control parameter variation to allow establishing an unambiguous causal relationship or correspondence in the form of a power system sensitivity. The latter may be on-line adapted to continuously reflect an updated aspect of the power system behavior, and thus enable an improved, fast and reliable power flow control in power systems comprising a meshed power network with two parallel flow paths or corridors connecting two areas or sub-systems.
摘要翻译： 本公开涉及根据功率流量参数和功率流量控制装置（PFC）的控制参数计算的电力系统灵敏度。 为此，控制参数变化应用于PFC或由PFC产生，并且包括控制输入u，控制工作e（注入的串联电压，插入的串联电抗）或控制效应q（功率流，有功功率） 转移，相移，电流）。 功率流响应测量单元以与控制参数变化充分同步的方式测量功率流响应（例如电流，有功或视在功率）的变化，以允许以电力系统灵敏度的形式建立明确的因果关系或对应关系 。 后者可以在线适应以连续反映电力系统行为的更新方面，并且因此能够在电力系统中实现改进的，快速和可靠的功率流控制，其包括具有两个平行流动路径的网状电力网络或连接两个区域的走廊 或子系统。
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公开(公告)号：US20130054035A1
公开(公告)日：2013-02-28
申请号：US13323432
申请日：2011-12-12
申请人： Bertil Berggren , Petr Korba , Rajat Majumder
发明人： Bertil Berggren , Petr Korba , Rajat Majumder , Swadshar Ray
IPC分类号： G06F1/26
CPC分类号： H02J3/24
摘要： The invention provides improved control of a power transmission system having a first group of measurement units in a first geographical area providing a first set of phasors and a second group of measurement units in a second geographical area providing a second set of phasors, where the phasors in the sets are generated at the same instant in time. In this system the power control device includes a phasor aligning unit that time aligns the first and second sets of phasors and a control unit that compares each set of phasors with a corresponding phasor number threshold, determines that a first control condition is fulfilled if each phasor number threshold has been exceeded and enables the provision of a common signal if the first control condition is fulfilled. The common signal is based on the obtained phasors in the first and second sets.
摘要翻译： 本发明提供了一种具有在第一地理区域中提供第一组相量的第一组测量单元和第二组测量单元的功率传输系统的改进的控制，第二组测量单元提供第二组相量，其中相量 这些集合在同一时刻产生。 在该系统中，功率控制装置包括时间对准第一和第二组相量的相量对准单元以及将每组相量与相应的相量数阈值进行比较的控制单元，如果每个相量确定第一个控制条件满足 已经超过了数字阈值，并且如果满足第一控制条件，则能够提供公共信号。 公共信号基于第一和第二组中获得的相量。
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公开(公告)号：US07912589B2
公开(公告)日：2011-03-22
申请号：US12149247
申请日：2008-04-29
申请人： Petr Korba , Marek Zima , Mats Larsson
发明人： Petr Korba , Marek Zima , Mats Larsson
摘要： The present disclosure relates to monitoring of electromechanical oscillations in electric power systems, and their identification by an adaptive algorithm based on a repeatedly measured and evaluated signal. In order for an estimation of parameters of a model of the power system to reasonably converge, proper initialization of the recursive calculation is required, including the definition of tuning parameters constraining the model and the calculation. Initialization for a second signal to be exploited can then be simplified by copying the set of tuning parameters tuned previously for a different signal. A conditioning gain multiplying the second signal establishes compatibility between the different signals, and a signal pre-filter in turn discards contributions beyond a frequency band comprising typical electromagnetic oscillations.
摘要翻译： 本公开涉及通过基于重复测量和评估的信号的自适应算法来监测电力系统中的机电振荡及其识别。 为了对电力系统模型的参数进行合理收敛，需要对递归计算进行恰当的初始化，包括限制模型和计算的调整参数的定义。 然后可以通过复制先前为不同信号调谐的一组调谐参数来简化要利用的第二信号的初始化。 与第二信号相乘的调节增益建立不同信号之间的兼容性，并且信号预滤波器进而丢弃超出包括典型电磁振荡的频带的贡献。
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公开(公告)号：US20090079267A1
公开(公告)日：2009-03-26
申请号：US12201493
申请日：2008-08-29
申请人： Petr Korba , Rudolf Wieser , Srinivas Ponnaluri , Mats Larsson , Alexandre Oudalov , Jose Taborda , Peter Steimer
发明人： Petr Korba , Rudolf Wieser , Srinivas Ponnaluri , Mats Larsson , Alexandre Oudalov , Jose Taborda , Peter Steimer
CPC分类号： H02J3/00 , H02J3/24 , Y02E60/728 , Y04S10/265 , Y10T307/50
摘要： The disclosure relates to a converter control unit or power system stabilizing unit for counteracting oscillations in electric power systems that is equipped and employed to provide and processes information for system-wide monitoring, protection, control and metering. It comprises means for synchronized (e.g. via GPS or another absolute/global time reference) sampling of voltages and/or currents, means for down-sampling in order to decrease the number of samples, and means for calculating phasors, i.e. time stamped amplitude and phase angle of the voltages and/or currents.
摘要翻译： 本公开涉及一种用于抵消电力系统中的振荡的转换器控制单元或电力系统稳定单元，其被配备并用于提供和处理用于系统范围监视，保护，控制和计量的信息。 它包括用于同步（例如通过GPS或另一绝对/全局时间参考）电压和/或电流的采样的装置，用于下采样的装置以减少采样数量，以及用于计算相量的装置，即时间戳幅度和 电压和/或电流的相位角。
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公开(公告)号：US20080177425A1
公开(公告)日：2008-07-24
申请号：US12000030
申请日：2007-12-07
IPC分类号： G05D17/02
CPC分类号： H02J3/24 , H02J3/06 , H02J3/1814 , Y02E40/18 , Y02E60/728 , Y04S10/265
摘要： The present disclosure is concerned with the combined voltage or power flow control and damping of electromechanical oscillations in an electric power system by Flexible AC Transmission System (FACTS) devices or High Voltage DC (HVDC) transmission devices. To this end, information about a state or operating point of the power system is generated from suitable second system signals (y2) and a control parameter (cp) of a FACTS controller is derived therefrom. The control parameter and a first system signal (y1) are used in the calculation of a control command (u) defining the settings of the FACTS device. Following a change in the state of the power system such as a change in the topology of a transmission network, poorly damped or even unstable oscillations are avoided by appropriate re-tuning of the control parameter of the damping or stabilizing equipment.
摘要翻译： 本公开涉及通过柔性交流传输系统（FACTS）装置或高压直流（HVDC）传输装置的电力系统中的机电振荡的组合电压或功率流控制和阻尼。 为此，从适当的第二系统信号（y 2 2）产生关于电力系统的状态或操作点的信息，并且从其导出FACTS控制器的控制参数（cp）。 在定义FACTS设备的设置的控制命令（u）的计算中，使用控制参数和第一系统信号（y1> 1）。 随着电力系统状态的变化，例如传输网络拓扑的变化，通过对阻尼或稳定设备的控制参数进行适当的重新调整来避免差的阻尼或甚至不稳定的振荡。
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公开(公告)号：US08497602B2
公开(公告)日：2013-07-30
申请号：US12952906
申请日：2010-11-23
申请人： Petr Korba , Rafael Segundo , Bertil Berggren , Andrew D. Paice , Rajat Majumder
发明人： Petr Korba , Rafael Segundo , Bertil Berggren , Andrew D. Paice , Rajat Majumder
CPC分类号： H02J3/24 , Y02E60/728 , Y04S10/265
摘要： A method and controller are provided for the compensation of time delays in remote feedback signals in power system control. The method includes converting the time delay into a phase shift and calculating four compensation angles from the phase shift. The optimal compensation angle is determined and applied to the remote feedback signals. A technique of equipping a controller with a global clock is also disclosed.
摘要翻译： 提供了一种方法和控制器，用于补偿电力系统控制中的远程反馈信号中的时间延迟。 该方法包括将时间延迟转换成相移并从相移计算四个补偿角。 确定最佳补偿角并将其应用于远程反馈信号。 还公开了一种将控制器装配到全局时钟的技术。
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公开(公告)号：US08019484B2
公开(公告)日：2011-09-13
申请号：US12000030
申请日：2007-12-07
IPC分类号： G05D11/00
CPC分类号： H02J3/24 , H02J3/06 , H02J3/1814 , Y02E40/18 , Y02E60/728 , Y04S10/265
摘要： The present disclosure is concerned with the combined voltage or power flow control and damping of electromechanical oscillations in an electric power system by Flexible AC Transmission System (FACTS) devices or High Voltage DC (HVDC) transmission devices. To this end, information about a state or operating point of the power system is generated from suitable second system signals (y2) and a control parameter (cp) of a FACTS controller is derived therefrom. The control parameter and a first system signal (y1) are used in the calculation of a control command (u) defining the settings of the FACTS device. Following a change in the state of the power system such as a change in the topology of a transmission network, poorly damped or even unstable oscillations are avoided by appropriate re-tuning of the control parameter of the damping or stabilizing equipment.
摘要翻译： 本公开涉及通过柔性交流传输系统（FACTS）装置或高压直流（HVDC）传输装置的电力系统中的机电振荡的组合电压或功率流控制和阻尼。 为此，从适当的第二系统信号（y2）产生关于电力系统的状态或操作点的信息，并且从其导出FACTS控制器的控制参数（cp）。 控制参数和第一系统信号（y1）用于计算定义FACTS设备的设置的控制命令（u）。 随着电力系统状态的变化，例如传输网络拓扑的变化，通过对阻尼或稳定设备的控制参数进行适当的重新调整来避免差的阻尼或甚至不稳定的振荡。
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公开(公告)号：US20110126038A1
公开(公告)日：2011-05-26
申请号：US12952906
申请日：2010-11-23
申请人： Petr KORBA , Rafael SEGUNDO , Bertil BERGGREN , Andrew D. PAICE , Rajat MAJUMDER
发明人： Petr KORBA , Rafael SEGUNDO , Bertil BERGGREN , Andrew D. PAICE , Rajat MAJUMDER
IPC分类号： G06F1/12
CPC分类号： H02J3/24 , Y02E60/728 , Y04S10/265
摘要： A method and controller are provided for the compensation of time delays in remote feedback signals in power system control. The method includes converting the time delay into a phase shift and calculating four compensation angles from the phase shift. The optimal compensation angle is determined and applied to the remote feedback signals. A technique of equipping a controller with a global clock is also disclosed.
摘要翻译： 提供了一种方法和控制器，用于补偿电力系统控制中的远程反馈信号中的时间延迟。 该方法包括将时间延迟转换成相移并从相移计算四个补偿角。 确定最佳补偿角并将其应用于远程反馈信号。 还公开了一种将控制器装配到全局时钟的技术。
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公开(公告)号：US20100094477A1
公开(公告)日：2010-04-15
申请号：US12418362
申请日：2009-04-03
申请人： Bertil Berggren , Mats Larsson , Tord Bengtsson , Petr Korba , Alexandre Oudalov
发明人： Bertil Berggren , Mats Larsson , Tord Bengtsson , Petr Korba , Alexandre Oudalov
IPC分类号： G06F19/00
CPC分类号： H02J3/24 , H02J3/005 , Y02E60/728 , Y04S10/265
摘要： The present disclosure relates to power system sensitivities as computed from power flow parameters and control parameters of a Power Flow Control Device (PFC). To this end, control parameter variations are applied to or generated by a PFC, and comprise variations in a control input u, a control effort e (injected series voltage, inserted series reactance), or a control effect q (power flow, active power transfer, phase-shift, current). A power flow response measuring unit measures a variation of a power flow response such as current, active or apparent power, in a way sufficiently synchronized with the control parameter variation to allow establishing an unambiguous causal relationship or correspondence in the form of a power system sensitivity. The latter may be on-line adapted to continuously reflect an updated aspect of the power system behaviour, and thus enable an improved, fast and reliable power flow control in power systems comprising a meshed power network with two parallel flow paths or corridors connecting two areas or sub-systems.
摘要翻译： 本公开涉及根据功率流量参数和功率流量控制装置（PFC）的控制参数计算的电力系统灵敏度。 为此，控制参数变化应用于PFC或由PFC产生，并且包括控制输入u，控制工作e（注入的串联电压，插入的串联电抗）或控制效应q（功率流，有功功率） 转移，相移，电流）。 功率流响应测量单元以与控制参数变化充分同步的方式测量功率流响应（例如电流，有功或视在功率）的变化，以允许以电力系统灵敏度的形式建立明确的因果关系或对应关系 。 后者可以在线适应以连续反映电力系统行为的更新方面，并且因此能够在电力系统中实现改进的，快速和可靠的功率流控制，其包括具有两个平行流动路径的网状电力网络或连接两个区域的走廊 或子系统。
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