Abstract:
Disclosed are various embodiments for calculating a downstream load in a power distribution network. A power distribution network may comprise smart meters capable of communicating readings describing power consumed by a customer to a monitoring computing device. A downstream load may be determined by the monitoring computing device for a point in the power distribution network using an average power determined for devices downstream from the point in the power distribution network. The average power for the devices downstream may be determined utilizing the readings received from the smart meters.
Abstract:
Various methods and systems are directed to a mislinked meter system that identifies utility meters mislinked to a distribution transformer in a data store. Utility meters reporting voltages that vary more than other meters linked to the same distribution transformer in the data store may be physically linked to a different distribution transformer. To compare meter voltages, the mislinked meter system generates normal meter errors for the utility meters and a normal transformer error for some or all of the utility meters linked to the same distribution transformer. The normal meter error and transformer error represent the amount the voltages of a utility meter varies from the voltages of the other utility meters associated with the distribution transformer. The more the meter errors vary when compared to the transformer error, the more likely a utility meter is mislinked to the wrong distribution transformer in the data store.
Abstract:
A coal feed system to feed pulverized low rank coals containing up to 25 wt % moisture to gasifiers operating up to 1000 psig pressure is described. The system includes gas distributor and collector gas permeable pipes imbedded in the lock vessel. Different methods of operation of the feed system are disclosed to minimize feed problems associated with bridging and packing of the pulverized coal. The method of maintaining the feed system and feeder device exit pressures using gas addition or extraction with the pressure control device is also described.
Abstract:
Disclosed are various embodiments for locating utility metering devices. Utility metering devices are those that are lost or stolen and that are facilitating unauthorized utility service access. Many AMI and/or AMR deployments lack the ability to remotely deactivate a meter. Accordingly, embodiments of this disclosure can generate a zone of interest in which an unauthorized utility metering device is located, and the unauthorized utility metering device can be subsequently located within the zone of interest.
Abstract:
The improvements proposed in this invention provide a reliable apparatus and method to gasify low rank coals in a class of pressurized circulating fluidized bed reactors termed “transport gasifier.” The embodiments overcome a number of operability and reliability problems with existing gasifiers. The systems and methods address issues related to distribution of gasification agent without the use of internals, management of heat release to avoid any agglomeration and clinker formation, specific design of bends to withstand the highly erosive environment due to high solid particles circulation rates, design of a standpipe cyclone to withstand high temperature gasification environment, compact design of seal-leg that can handle high mass solids flux, design of nozzles that eliminate plugging, uniform aeration of large diameter Standpipe, oxidant injection at the cyclone exits to effectively modulate gasifier exit temperature and reduction in overall height of the gasifier with a modified non-mechanical valve.
Abstract:
Disclosed are various embodiments for transmission evaluation. In one embodiment, among others, a method includes evaluating a plurality of contingencies to generate a plurality of contingency results, where at least one of the contingency results includes an overload condition. The evaluation is based at least in part upon a case associated with a transmission network. The method further includes sorting the plurality of contingency results based upon corresponding overload-contingency pairs and determining a potential remediation solution to the overload condition based at least in part upon the overload-contingency pair. In another embodiment, a system includes a transmission evaluation application executed in a computing device. The application includes logic that obtains a plurality of contingency evaluation results including an overload condition, determines at least one potential remediation solution to the overload condition, updates the case to include the potential remediation solution, and generates a second plurality of contingency evaluation results.
Abstract:
Disclosed are various embodiments for simulating distribution electric circuit models containing simulated software intelligent electronic devices. The distribution circuit and intelligent electronic simulator application facilitates the creation of user created software intelligent electronic devices. The software intelligent electronic devices imitate the operation of actual intelligent electronic devices on a power line. Communication between the software intelligent electronic devices and the automated recovery system can be captured using the distribution circuit and intelligent electronic device simulator application.
Abstract:
A synchronized pseudorandom sequence injector is provided for injecting a plurality of pseudorandom signals at selected locations in a power system having a plurality of locations forming a transmission and distribution grid. A synchronization pulse generator generates an accurate reference clocking signal. A pseudorandom clocking and sequence generator receives the clocking signal and generates a string of pseudorandom sequences. A binary drive control creates a tri-state voltage output from a logic level output of the pseudorandom clocking and sequence generator. A signal conditioning interface processes the voltage output to attenuate any protection related carrier signals from a pseudorandom signal injection point at a selected location.
Abstract:
Disclosed are various embodiments for facilitating data synchronization in a utility computing environment. A data synchronization application can monitor source systems in such an environment and generate periodic change sets that correspond to data that has changed in the various source systems. Destination systems can subscribe to change sets and receive the appropriate change sets by monitoring flags that the data synchronization application can set. Various classes of change sets that correspond to data within a particular change set can also be generated.
Abstract:
Various methods and systems are provided for impulse response monitoring in power systems. In one embodiment, a method includes obtaining raw power system data associated with a power system, cross-correlating the raw power system data with a synchronized pseudo-random sequence signal injected into the power system to determine a correlated impulse response and determining a condition of the power system based at least in part upon the correlated impulse response. In another embodiment, a system includes a plurality of signal injection systems and a data capture device coupled to a power system. A data analysis device cross-correlates raw power system data obtained by the data capture device with at least one synchronized pseudo-random sequence signal injected by a signal injection system and determines a condition of the power system based at least in part upon a frequency spectrum based upon a correlated impulse response.