Abstract: An intelligent electronic device (IED) may monitor wet stack residue buildup of a diesel engine. Once the wet stack residue accumulates to a certain amount, the IED may perform a mitigation procedure. Additionally, tracking wet stack residue buildup may allow an IED to attempt to prevent or reduce accumulation of the wet stack residue. The IED may track an operating power level of the diesel engine to estimate the rate of residue buildup.

Abstract: A method includes obtaining electrical measurements of an input signal of a power system. The electrical measurements are obtained at a sampling frequency and the input signal is indicative of an operating frequency of the power system. The method includes generating an intermediate signal from the input signal. The intermediate signal has a direct current (DC) component indicative of a magnitude and a phase of the input signal. The method includes filtering the intermediate signal using an adjustable length filter to obtain the magnitude and the phase of the input signal. The length of the adjustable length filter varies based at least in part on a period measurement of the power system.

Abstract: A power supply includes a Primary or “high voltage” side and a Secondary or “low voltage” side. The primary side has boost stage circuitry that includes a boost stage controller that causes the boost stage circuitry to provide electrical energy, at least at a minimum boost voltage, to an energy storage capacitor. The energy storage capacitor may be charged by electrical energy at the minimum boost voltage and discharge electrical energy during a ride through event to power the electronic device.

Abstract: A software-defined network (SDN) rule modification counter system provides counters that track all changes and edits to rules at SDN controllers and SDN switches on an SDN. The system compares counters at the SDN controller and SDN switch to determine if they match. If the counters do not match, a change has been made to the rules. With the addition of rule edit statistics the SDN controller will now have visibility that a rule modification was performed. The SDN controller then verifies that the state of the device is the same as its expected state as a secondary integrity check. Based on the rule modification notification, changes to a central rules table at the SDN controller and changes to rule settings at the SDN switch are made according to pre-programmed logic.

Abstract: An intelligent electronic device (IED) includes memory and a processor operatively coupled to the memory. The processor is configured to establish, over a communication network of a power system, a connection association (CA) with a receiving device using a MACsec Key Agreement (MKA). The processor is configured to automatically send an announce message indicating a set of enabled application protocols on the IED to the receiving device.

Abstract: The present disclosure relates to an ambidextrous hinge. The ambidextrous hinge includes a first knuckle with a first engagement feature, a second knuckle with a second engagement feature, and a third knuckle movably coupled between the first knuckle and the second knuckle. The third knuckle includes a third engagement feature that engages the first engagement feature to cause the ambidextrous hinge to lock in a first open position when used as a first swing hinge. The third knuckle includes a fourth engagement feature that engages the second engagement feature to cause the ambidextrous hinge to lock in a second open position when used as a second swing hinge.

Abstract: Systems and methods described herein monitor real-time digital data for degradation. A merging unit may measure electrical parameters in an electric power system using a sensor component and may generate a stream of digital data representing measured electrical parameters. The merging unit may transmit the stream of digital data representing measured electrical parameters and receive a plurality of data frames using an interface. A digital data degradation detection subsystem may analyze a plurality of digital metrics associated with the plurality of data frames and make a determination of whether a subset of the plurality of data frames satisfies the plurality of digital metrics, and the subset of the plurality of data frames fails at least one of the plurality of digital metrics. The merging unit may implement a response when the subset of the plurality of data frames fails at least one of the plurality of digital metrics.

Abstract: Signal transducers in electrical communication with shorted leads of current transformers are used to provide monitoring and protection functions to an electric power delivery system. Differential protection is performed by comparing a predetermined threshold against a voltage signal from series-connected leads of signal transducers in electrical communication with shorted leads of current transformers. The signal transducers may be Rogowski coils. Signal transducers in communication with shorted leads may be used to improve safety and increase performance of the current transformers by decreasing susceptibility to saturation.

Abstract: A split core current transformer (CT) includes a first CT core half and a first housing that houses the first CT core half. The split core CT includes a second core half and a housing that houses the second CT core half. The split core CT includes a first set of bushings configured to flexibly couple the first insulative body to the first housing to maintain contact between faces of the first CT core half and faces of the second CT core half.

Abstract: An intelligent electronic device (IED) of an electric power distribution system includes processing circuitry and a memory that includes a tangible, non-transitory, computer-readable comprising instructions. The instructions, when executed by the processing circuitry, are configured to cause the processing circuitry to receive operating data associated with the electric power distribution system, determine whether the operating data matches with expected operating data, generate a connectivity association key (CAK) based on the operating data in response to a determination that the operating data matches with the expected operating data, and establishing a connectivity association based on the CAK.

Abstract: The present disclosure pertains to systems and methods for monitoring 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. A first current transformer is disposed between the stack of capacitors and the first ground connection. The current transformer provides an electrical signal corresponding to a current associated with the CCVT. A second transformer is disposed to provide a second electrical signal related to the CCVT. The second signal may be a voltage signal or a current signal. An intelligent electronic device (IED) in electrical communication with the current measurement devices monitors a health factor comprising a ratio of magnitudes or a difference between phases from the transformers at a single frequency. The health factor is compared against an acceptable range and an alarm is generated when the range is exceeded.

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 technique and a system are used to analyze incremental quantities. The instantaneous electrical measurements associated with a loop in a multiple-phase electric power delivery system are obtained before a fault occurred on the loop and after the same fault occurred on the same loop, and differences between the instantaneous electrical measurements at different times are used to determine incremental quantities, which are used to determine a location of the fault on the loop. Multiple loops in the multiple-phase electric power delivery system are monitored to determine corresponding fault locations on each loop.

Abstract: An electronic device includes a processor that performs a basic input/output system (BIOS) process to initialize hardware of the electronic device upon a first start up. The processor determines, within the BIOS process, that initialization of an operating system (OS) on the electronic device has not been performed. The processor waits to receive a user input indicating that the user is ready to initialize the OS, thus protecting the OS initialization process from unintended interruptions such as power loss that can cause the OS initialization to fail irreparably. Upon receiving the user input, the processor begins the OS initialization.

Abstract: The present disclosure relates to systems and methods to coordinate protective elements in an electric power system (EPS). In one embodiment, a system may include a Time vs Normalized Impedance Length subsystem to determine a first plurality of times of operation of a first protective element for a plurality of fault locations in the EPS and to determine a second plurality of times of operation of a second protective element for the plurality of fault locations in the EPS. A protective action subsystem may coordinate a response of the first protective element and the second protective element. The protective action subsystem may establish a pickup and a protective action for the second protective element. Upon detection of a fault in the EPS, one of the first protective action and the second protective action may be implemented based on one of the first pickup and the second pickup.

Abstract: A control system of an electric power distribution system includes processing circuitry and a memory having instructions that, when executed by the processing circuitry, cause the processing circuitry to perform operations that include receiving an indication of a profile, generating a connectivity association key (CAK) based on the profile, distributing a copy of the CAK to a device of the electric power distribution system, and establishing a connectivity association with the device in accordance with the profile based on a verification that the device possesses the copy of the CAK.

Abstract: The present disclosure pertains to systems and methods to monitor communication ports. In one embodiment, a system may include a host device that generates a first flow of traffic to send via a host device communication port. A security dongle may receive the first flow of traffic via a security dongle communication port in communication with the host device communication port. The security dongle may generate a second flow of traffic. The security dongle may transmit the second flow of traffic through the security dongle communication port. The host device may receive the second flow of traffic from the host device communication port and may generate an alarm when the second flow of traffic deviates from an expected response. The communication between the host device and the security dongle allows the host device to detect when the security dongle is disconnected from the host device.

Abstract: The present disclosure pertains to systems and methods to monitor communication ports. In one embodiment, a system may include a first interface to connect to a first host device and a second interface to connect to a second host device. The first interface and the second interface may include a plurality of channels to enable communication between the first host device and the second host device. Control logic may monitor a power channel between the first host device and the second host device and a communication channel between the first host device and the second host device. The control logic may detect an interruption of at least one of the power channel or the communication channel. In response to the interruption, the control logic may disable communication between the first host device and the second host device.

Abstract: Systems and methods are provided for monitoring or protecting an electric power distribution system using protective devices that may rely on accurate time signals from a common time source. A first protective device may receive a first time signal deriving from the common time source and a second protective device may receive a second time signal deriving from the common time source. The first time signal and the second time signal may be compared; when a difference between them exceeds a defined threshold, time signal manipulation may be detected. The protective devices may modify their operation in response to or to account for the time signal manipulation.