Abstract: Methods, systems, and computer readable media for managing the distribution of photovoltaic power in a multi-floor building are disclosed. According to one aspect, a method includes determining power requirements for each of a plurality of loads associated with a respective plurality of floors in a multi-floor building, wherein each of the plurality of floors includes a direct current (DC) distribution bus. The method further includes using a PV converter to supply a power output from a PV source to one or more of the plurality of loads via one or more respective DC distribution buses, wherein the power output is supplied to the one or more of the plurality of loads in an order such that each subsequent load is supplied at least a remaining portion of the power output after the power requirements of a previously supplied load is fully satisfied.

Abstract: A power distribution system for off-shore natural resource platforms includes an off-shore medium voltage direct current (MVDC) power bus. The MVDC power bus includes multiple power bus segments, each of which may be connected to one or more other power bus segments via a corresponding circuit breaker. Each power bus segment may also be electrically coupled to an off-shore renewable energy source, such as a wind farm, and/or an off-shore drilling platform. The off-shore drilling platforms may include local power distribution systems electrically connected to a corresponding power bus segment via a circuit breaker to receive power from the MVDC power bus and supply power to local equipment of the off-shore drilling platform.

Abstract: A hybrid alternating current (AC)/direct current (DC) distribution system for multiple-floor buildings includes per-floor rectifiers for converting supply side AC to DC. Each rectifier is configured to supply a plurality of DC loads associated with one floor of a multiple-floor building. The system further includes per-floor DC busses, each of the DC busses being configured to distribute the DC to the DC loads its respective floor. The system further includes at least one AC bus for supplying AC power to AC loads in the building.

Abstract: A microgrid includes a plurality of distributed energy resources such as controllable distributed electric generators and electrical energy storage devices. A method of controlling operation of the microgrid includes periodically updating a distributed energy resource schedule for the microgrid that includes on/off status of the controllable distributed electric generators and charging/discharging status and rate of the electrical energy storage devices and which satisfies a first control objective for a defined time window, based at least in part on a renewable energy generation and load forecast for the microgrid. The method further includes periodically determining power set points for the controllable distributed energy resources which satisfy a second control objective for a present time interval within the defined time window, the second control objective being a function of at least the distributed energy resource schedule for the microgrid.

Abstract: A method and system restores power in a power distribution network. The network includes a plurality of power sources, a plurality of loading zones, a plurality of switching devices interconnected between the plurality of power sources and the plurality of loading zones, and an intelligent electronic device associated with each of the plurality of switching devices to control the switching devices. A base network state is defined and a power restoration logic is created for the base network state. A simulation is run for the power restoration logic and then the power restoration logic is transmitted to a power restoration controller which thereafter monitors and controls the intelligent electronic devices.

Abstract: A power distribution system for off-shore natural resource platforms includes an off-shore medium voltage direct current (MVDC) power bus. The MVDC power bus includes multiple power bus segments, each of which may be connected to one or more other power bus segments via a corresponding circuit breaker. Each power bus segment may also be electrically coupled to an off-shore renewable energy source, such as a wind farm, and/or an off-shore drilling platform. The off-shore drilling platforms may include local power distribution systems electrically connected to a corresponding power bus segment via a circuit breaker to receive power from the MVDC power bus and supply power to local equipment of the off-shore drilling platform.

Abstract: Unique systems, methods, techniques, and apparatuses of datacenter power supply systems are disclosed. One exemplary embodiment is a datacenter power supply system comprising an AC power bus structured to selectably receive AC power from an AC power grid and a AC generator and structured to provide AC power to one or more AC datacenter loads and an AC/DC converter, a DC power generation system structured to provide DC power to a DC/DC converter, a DC power bus structured to selectably receive power from the AC/DC converter and the DC/DC converter and to provide DC power to a plurality of DC datacenter loads, and an electronic control system structured to selectably control the datacenter power supply system to operate in plurality of modes.

Abstract: An uninterruptible power supply system includes an AC input interface and a DC output interface, and a plurality of power supply paths coupled between the AC and DC interfaces. A first one of the power supply paths has a lower component count, whereas a second one of the power supply paths has a higher component count. At least one of the power supply paths is structured to supply DC electrical power to a power bus in the DC output interface at a varying voltage.

Abstract: A power supply system includes an AC input interface, a DC output interface, and each of a single-conversion power supply path and a multi-conversion power supply path extending between the AC input interface and the DC output interface. Operating the system in a first or standard mode includes conveying electrical power between an AC power supply and an electrical load by way of the single-conversion power supply path. Operation in a second or non-standard operation mode includes conveying the electrical power by way of the multi-conversion power supply path.

Abstract: A power generation system includes at least one generator that generates a medium voltage direct current that has a positive DC voltage output and a negative DC voltage output. The system also provides a medium voltage DC (MVDC) cable system with a positive pole cable and a negative pole cable, wherein the positive pole cable is connected to the positive DC voltage output and the negative pole cable is connected to the negative DC voltage output. A substation is connected to the MVDC cable system and includes at least one DC/DC step-up converter to step-up the medium voltage direct current to a high voltage direct current.

Abstract: Among other things, one or more techniques and/or systems are provided for maintaining a distributed electrical power network model associated with a power grid. A global power network model, comprising a global logical representation of the power grid, is maintained at a network control center configured to manage one or more substations associated with the power grid. The network control center hosts grid management applications that utilize the global power network model. A local power network model, comprising a local logical representation of a power grid territory within the power grid monitored by a substation, is maintained at the substation. The substation hosts one or more local grid management applications that utilize the local power network model. The global power network model and the local power network model are synchronized in response to events occurring within the power grid.

Abstract: Methods and systems for secured control of circuit breakers in an electric power substation against undesired direct operation. Consequences of a malicious action are prevented or mitigated using a validation approach that either blocks the command or ensures a negligible effect on system operation. An example method, suitable for implementation in a monitoring device in an electric power substation, includes receiving a command to open or close a circuit breaker. In response, one or more state parameters for the electric power network that comprises the substation are then predicted, the predicted state parameters reflecting an operating state for the network under the assumption that the received command is executed. The method further comprises comparing the predicted one or more state parameters to corresponding operational limits. Execution of the command is then blocked, in response to determining that one or more of the predicted state parameters violate the corresponding operational limits.

Abstract: Systems and methods for fault detection and protection in electric power systems that evaluates electromagnetic transients caused by faults. A fault can be detected using sampled data from a first monitored point in the power system. Detection of fault transients and associated characteristics, including transient direction, can also be extracted through evaluation of sample data from other monitored points in the power system. A monitoring device can evaluate whether to trip a switching device in response to the detection of the fault and based on confirmation of an indication of detection of fault transients at the other monitored points of the power system. The determination of whether to trip or activate the switching device can also be based on other factors, including the timing of receipt of an indication of the detection of the fault transients and/or an evaluation of the characteristics of the detected transients.

Abstract: A cool hydrogen-propelled cyclone quench box comprises: a mixing chamber (7) arranged at the center of a lower support plate (11); swirl tubes (6) arranged above the lower support plate (11) and outside the mixing chamber (7), the tubes being in tangential communication with the body of the mixing chamber (7) along a horizontal direction; a gas-liquid downcomer (5) perpendicularly arranged outside each swirl tube (6), the bottom portions of the downcomers and the outer walls of the swirl tubes (6) being in tangential communication along a perpendicular direction, and the top portions of the gas-liquid downcomers (5) being connected to fluid inlets (4) arranged on an upper support plate (3). The bottom end of a cool hydrogen branch pipe (8) is arranged outside each swirl tube (6), and is tangentially connected to the swirl tube (6) along a horizontal direction.

Abstract: The method of determining back-feed paths is capable of efficiently solving multi-layer restoration problems by minimizing a fitness function using an iterative genetic algorithm. The method optimizes back-feeding of out-of-service areas by minimizing power loss, switching, unserved loads and voltage/current violations. The efficiency of the algorithm is further increased through the use of a reactive Tabu search to prevent duplicate candidate systems.

Abstract: A method and system restores power in a power distribution network. The network includes a plurality of power sources, a plurality of loading zones, a plurality of switching devices interconnected between the plurality of power sources and the plurality of loading zones, and an intelligent electronic device associated with each of the plurality of switching devices to control the switching devices. A base network state is defined and a power restoration logic is created for the base network state. A simulation is run for the power restoration logic and then the power restoration logic is transmitted to a power restoration controller which thereafter monitors and controls the intelligent electronic devices.

Abstract: A method and system restores power in a power distribution network. The network includes a plurality of power sources, a plurality of loading zones, a plurality of switching devices interconnected between the plurality of power sources and the plurality of loading zones, and an intelligent electronic device associated with each of the plurality of switching devices to control the switching devices. A base network state is defined and a power restoration logic is created for the base network state. A simulation is run for the power restoration logic and then the power restoration logic is transmitted to a power restoration controller which thereafter monitors and controls the intelligent electronic devices.

Abstract: Methods, systems, and computer readable media for managing the distribution of photovoltaic power in a multi-floor building are disclosed. According to one aspect, a method includes determining power requirements for each of a plurality of loads associated with a respective plurality of floors in a multi-floor building, wherein each of the plurality of floors includes a direct current (DC) distribution bus. The method further includes using a PV converter to supply a power output from a PV source to one or more of the plurality of loads via one or more respective DC distribution buses, wherein the power output is supplied to the one or more of the plurality of loads in an order such that each subsequent load is supplied at least a remaining portion of the power output after the power requirements of a previously supplied load is fully satisfied.

Abstract: A hybrid alternating current (AC)/direct current (DC) distribution system for multiple-floor buildings includes per-floor rectifiers for converting supply side AC to DC. Each rectifier is configured to supply a plurality of DC loads associated with one floor of a multiple-floor building. The system further includes per-floor DC busses, each of the DC busses being configured to distribute the DC to the DC loads its respective floor. The system further includes at least one AC bus for supplying AC power to AC loads in the building.

Abstract: A cool hydrogen-propelled cyclone quench box comprises: a mixing chamber (7) arranged at the center of a lower support plate (11); swirl tubes (6) arranged above the lower support plate (11) and outside the mixing chamber (7), the tubes being in tangential communication with the body of the mixing chamber (7) along a horizontal direction; a gas-liquid downcomer (5) perpendicularly arranged outside each swirl tube (6), the bottom portions of the downcomers and the outer walls of the swirl tubes (6) being in tangential communication along a perpendicular direction, and the top portions of the gas-liquid downcomers (5) being connected to fluid inlets (4) arranged on an upper support plate (3). The bottom end of a cool hydrogen branch pipe (8) is arranged outside each swirl tube (6), and is tangentially connected to the swirl tube (6) along a horizontal direction.