| Patent application number | Description | Published |
|---|
| 20100007219 | System for Automatically Detecting Power System Configuration - There is disclosed a method of detecting the configuration of a network having a feeder line with a plurality of feeder meters and distribution transformer meters (DTMs) coupled thereto and with one or more customer meters and/or customer configuration modules coupled to the distribution transformers. The method includes the steps of having each of the feeder meters transmit a uniquely identifiable signal through the feeder line. The DTMs then identifying the phase of each of the uniquely identifiable signals and then transmitting the phase of each of the uniquely identifiable signals to a data collector along with a unique DTM identifier. The connectivity relationship between the feeder meters and distribution transformer meters is then extrapolated by comparing the phase information transmitted by the DTMs. The relationship of the customer meters relative to the DTMs can also be plotted by having each DTM transmit the DTM identifier to all of their respective customer meters, who then transmit this to the data collector along with their customer meter identifier. The method also permits the determination of which phase the DTM is connected to by analyzing the phase angle of a demodulated feeder meter signal. | 01-14-2010 |
| 20100007336 | System for Accurately Detecting Electricity Theft - There is disclosed a method of monitoring an electrical network of the type having a feeder line connected to a plurality of distribution transformers, each distribution transformer being in turn coupled to a load which may be provided with a customer meter. The method includes the steps of recording an accumulated in-phase current at each of the distribution transformers over a time period and recording for the same time period an accumulated in-phase current at the feeder line. The sum of the accumulated in-phase currents recorded at the distribution transformers are then compared to the accumulated in-phase current recorded at the feeder line. The method may also include the steps of recording accumulated in-phase currents at the customer meters and comparing their sum with the accumulated in-phase current measured at the distribution transformers coupled to the customer meters. The method may further include a method of automatically detecting the configuration of the network to determine on which phase the customer meters are connected to, and to which distribution transformer said customer meters are connected to, and further, where on the network, relative to a plurality of feeder meters, each of the distribution transformers are connected. | 01-14-2010 |
| 20110148393 | SYSTEM AND DEVICE FOR MEASURING VOLTAGE IN A CONDUCTOR - A system and device for measuring voltage in a conductor having a voltage provides a first electrode surrounding and spaced from the conductor, and a second electrode surrounding and spaced from both the conductor and the first electrode such that there is no contact between the conductor and the electrodes or between the first and second electrodes. The first electrode is connected to a first input of a differential amplifier circuit and the second electrode is connected to the other input of the differential amplifier circuit. The output of the differential amplifier circuit provides a voltage signal in proportion to the voltage of the conductor, thus providing a non-contact means for measuring the voltage of a conductor without requiring a connection to ground while simultaneously providing a high level of rejection of external interference. | 06-23-2011 |
