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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：US07973427B2
公开(公告)日：2011-07-05
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
IPC分类号： H01J1/10
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：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：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：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：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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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：US20100023179A1
公开(公告)日：2010-01-28
申请号：US12560824
申请日：2009-09-16
申请人： Petr KORBA , Mats Larsson
发明人： Petr KORBA , Mats Larsson
IPC分类号： G06F19/00
CPC分类号： H02J3/24 , Y02E60/728 , Y04S10/265
摘要： Exemplary embodiments of the present disclosure provide a method and controller for damping multimode electromagnetic oscillations in electric power systems which interconnect a plurality of generators and consumers. The controller for damping such oscillations includes a phasor measurement unit (PMU) and a power oscillation damper (POD) controller. Each oscillating mode signal is damped and then superposed to derive a control signal. A feedback controller is used to feedback the control signal to a power flow control device in the power system.
摘要翻译： 本公开的示例性实施例提供了一种用于阻尼将多个发电机和消费者互连的电力系统中的多模电磁振荡的方法和控制器。 用于阻尼这种振荡的控制器包括相量测量单元（PMU）和功率振荡阻尼器（POD）控制器。 每个振荡模式信号被衰减然后叠加以导出控制信号。 反馈控制器用于将控制信号反馈给电力系统中的功率流控制装置。
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公开(公告)号：US20090216472A1
公开(公告)日：2009-08-27
申请号：US12368819
申请日：2009-02-10
申请人： Marek Zima , Petr Korba , Albert Leirbukt , Mats Larsson
发明人： Marek Zima , Petr Korba , Albert Leirbukt , Mats Larsson
摘要： A relationship between a temperature TI of a power line or power transmission conductor, an electrical quantity of the power line such as a current I or power flow P through the power line, as well as meteorological quantities or ambient conditions of the power line such as wind speed W, wind direction, humidity, solar radiation S and ambient temperature Ta, is established in the form of a thermal model of the power line. Values of the aforementioned quantities or variables are continuously measured, and the collected values of the quantities are evaluated in order to update model parameters of the thermal model during operation of the power line. In one example, an average temperature representative of the entire line is determined via two Phasor Measurement Units (PMU) 11, 11′ providing synchronized phasor values from two ends of the power line. An ohmic resistance of the power line is computed from the phasor values, from which in turn the average line temperature can be derived.
摘要翻译： 电力线路或电力传输导体的温度TI，通过电力线的电流I的电力线或电力流P的电量以及电力线的气象量或环境条件之间的关系，例如 风速W，风向，湿度，太阳辐射S和环境温度Ta以电力线的热模型的形式建立。 连续地测量上述数量或变量的值，并且评估量的收集值，以便在电力线的运行期间更新热模型的模型参数。 在一个示例中，表示整条线路的平均温度通过两个相量测量单元（PMU）11,11'确定，该相量测量单元从电源线的两端提供同步的相量值。 根据相量值计算电力线的欧姆电阻，从而可以导出平均线路温度。
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公开(公告)号：US20080281437A1
公开(公告)日：2008-11-13
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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