Abstract: The present disclosure pertains to systems and methods for eliminating Address Resolution Protocol (ARP) traffic in data networks. In one embodiment, a controller in a software-defined network (SDN) may generate a plurality of communication flows. The controller may program a plurality of network devices in a data plane based on the plurality of communication flows. A packet to be transmitted in the data plane may be received from a transmitting host by one of the plurality of network devices. A destination host specified in the packet may be determined without reliance on an original media access control (MAC) address in the packet, and the packet may be routed to the destination host.

Abstract: Systems and methods to test an electric power delivery system include a communication subsystem to transmit test signals to one or more merging units, a test subsystem to transmit a test data stream to the one or more merging units via the communication subsystem, and a processor subsystem to receive looped back data from the one or more merging unit in response to the transmitted test data stream and to determine an operating condition based on the looped back data.

Abstract: Systems and methods for displaying electric power system metering information in a panel may use digitized signals from primary protection relays. The system may include multiple panel meters. One or more of the panel meters may receive the digitized signals using an electrically non-conductive communication media. In various embodiments, the panel may be electrically isolated from the primary protection relay. The panel may be hot swappable and may be connected to a primary protection relay while the relay is in continuous operation.

Abstract: Disclosed herein are systems and methods for safe electric power delivery protection within a high-risk area while maintaining electric power availability in non-faulted areas. Fault signals from wireless sensors are used at a recloser to block reclosing onto a faulted high-risk zone. Fault signals from wireless sensors are used at a recloser to permit reclosing when the reclosing operation will not close onto a fault location within the high-risk zone. Portions of the power system may be selectively openable by sectionalizers. When a fault is reported by a wireless sensor as being on a portion of the power system selectively openable, a recloser may be permitted to attempt a reclose operation affecting the high-risk zone and the selectively openable portion.

Abstract: Electric power system voltage control and voltage stability may be calculated using energy packets. Sets of negative energy packet sets normalized by a set of positive and negative energy packet sets may be used for voltage control by adding or removing capacitive units. Energy packet voltage indicators may be calculated using energy packets, and used to determine voltage stability. Control actions may be taken depending on the determined voltage stability.

Abstract: The present disclosure pertains to devices, systems, and methods for monitoring an electric power system. In one embodiment, a system may detect a failure in an electric power system. The system may include a communication interface to receive a first indication related to a condition in the electric power system, and a second indication related to the condition. The system may also include a test subsystem to compare the first indication to the second indication and to determine a discrepancy between the first indication and the second indication. A diagnostic subsystem may identify the failure based on the discrepancy between the first indication and the second indication. An alert subsystem may generate an alert based on the failure.

Abstract: Systems and methods to isolate faults and restore power are described herein. For example, an intelligent electronic device (IED) may receive a blocking signal indicating a fault is detected on a power line. The IED may obtain one or more current measurements of the power line. The IED may determine that a fault is not present on the power line at the IED based on the one or more current measurements. The IED may trip a first current interruption device of the IED The IED may send a close permissive signal to another IED indicating that the other IED is permitted to permitted to close an open current interruption device of the other IED to restore power to one or more loads.

Abstract: Systems and methods including improving availability of protection of an electric power delivery system even upon unavailability of power system signals. Such protection relays may provide protection using signals from the power system and provide the signals to an integrator or another device. Upon unavailability of power system signals to a protection relay, the integrator sends substitute power system signals may be provided to the protection relay. The protection relay may continue to provide protection using the substitute power system signals.

Abstract: The present disclosure relates to controlling a capacitor bank using current measurements from different current sensors depending on the power flow direction. For example, the system may perform capacitor bank control operations using current measurements from a first current sensor coupled to the power line between an initial source and the capacitor bank when power is flowing in a first power flow direction on the power line. The system may determine that power flow on the power line has changed from flowing in the first power flow direction to flowing in a second power flow direction from an updated source, different from the initial source. The system may, upon detecting the change in the power flow direction perform control operations of the capacitor bank using current measurements from a second current sensor between an updated source and the capacitor bank.

Abstract: The present disclosure relates to systems and methods for creating a data tunnel to communicate test data in a test configuration in an electric power system. In one embodiment, a remote unit may include a monitored equipment interface to receive information representative of a condition in the electric power system from a test set and a first test data port to communicate test data through the data tunnel in the test configuration. The remote unit may use a first communication subsystem to generate and transmit a stream of data packets comprising information from the monitored equipment interface and information from the first test data port to be routed through the data tunnel. A protection system may receive the stream of data packets from the first communication subsystem and separate information from the monitored equipment interface and information from the test data routed through the data tunnel.

Abstract: The present disclosure pertains to a line-powered current measurement system to mount to an electrical conductor and related methods. In one embodiment, a system may comprise a current transformer to electrically couple to an electrical conductor and to generate a secondary current proportional to a primary current in the conductor. A power harvesting subsystem may harvest power from the secondary current in a first configuration. A switching subsystem may transition the line-powered current measurement device between the first configuration and a second configuration, in which a current measurement subsystem generates a measurement of the secondary current. The switching subsystem may provide the secondary current to the power harvesting subsystem in the first configuration and may bypasses the power harvesting subsystem in the second configuration. A communication subsystem may transmit the measurement of the secondary current to a receiver device.

Abstract: Systems and methods may maintain protection of electric power delivery systems in the event of an attack on protection and/or control features of the power system. Primary protective functions may be physically isolated from other functions in primary protection relays. Integrators may facilitate non-primary protection functions and disconnect all communication with primary protection relays in the event of an attack. Primary protection relays maintain protection functions even during the attack or unavailability of the integrators.

Abstract: The present disclosure pertains to systems and methods for detecting traveling waves in electric power delivery systems. In one embodiment, a system comprises a capacitance-coupled voltage transformer (CCVT) in electrical communication with the electric power delivery system, the CCVT comprising a stack of capacitors and an electrical contact to a first ground connection. Electrical signals from accessible portions of the CCVT are used to detect traveling waves. Current and/or voltage signals may be used. In various embodiments, a single current may be used. The traveling waves may be used to detect a fault on the electric power delivery system.

Abstract: Systems and methods may mitigate risk of fire caused by an electric power system. In one embodiment, a system may include an intelligent electronic device (IED). The IED includes a communication subsystem to receive a signal from a sensor related to a condition of the electric conductor. A processing subsystem in communication with the communication subsystem may operate in at least two modes comprising a high security mode and a fire prevention mode. In the fire prevention mode, the IED may interrupt a flow of electric current based on the signal from the at least one sensor associated with the electric conductor. In the high security mode, the system may interrupt a flow of electric current based on the signal from the at least one sensor associated with the electric conductor and based on a second condition relating to the electric conductor.

Abstract: Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.

Abstract: Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.

Abstract: Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.

Abstract: A system is provided for monitoring and protecting an electric power distribution system using intelligent electronic devices that may rely on the communication from wireless electrical measurement devices. A wireless electrical measurement device may obtain electrical measurements on a transmission line and wirelessly transmit messages containing the measurements to an intelligent electronic device. The intelligent electronic device may determine a consistency of wireless communication from the wireless electrical measurement device based at least in part on the received messages. When the wireless communication is determined to be presently consistent, the intelligent electronic device may operate in a first mode. When the wireless communication is determined not to be presently consistent, the intelligent electronic device may operate in a second mode.

Abstract: Calculation of a value of energy passing a point of an electric power delivery system, and price associated with the value is disclosed herein. Use of energy packets according with the embodiments of this disclosure more accurately represents the amount of energy produced and consumed by equipment. Energy packets may be calculated over one or more phases, over configurable time periods. Energy packets may be used in conjunction with a monetary rate to calculate the price for billing an energy consumer or crediting an energy producer.

Abstract: Systems and methods to disconnect a faulted region of a power grid are described. For example, a control system may obtain a set of regions of a power grid. The control system may obtain a current magnitude and a voltage magnitude of the power grid. The control system may detect a fault in the power grid based at least in part on the current magnitude. The control system may, from the set of regions, determine a faulted region that the fault is located within based on a voltage magnitude of one or more buses in the power grid, a net change in power with respect to time of one or more regions in the set of regions, or both. The control system may send one or more signals to electrically disconnect the faulted region from the power grid.