Patent classifications
G01R29/18
METHOD AND SYSTEM FOR LOCALLY CONTROLLING POWER DELIVERY ALONG A DISTRIBUTION FEEDER OF AN ELECTRICITY GRID
A method and system for locally controlling delivery of electrical power along a distribution feeder. For a feeder segment in the distribution feeder the method includes: obtaining an actual voltage magnitude at an upstream node and at a downstream node of the feeder segment, and a real power value at the upstream node; setting a target voltage phasor at the downstream node as a value when a power flow across the feeder segment is maintained, and when equal reactive power is injected at the upstream and downstream nodes that consumes all the reactive power in the feeder segment; and adjusting operation of the at least one controllable reactive power resource so that the actual voltage magnitude at the downstream node moves towards a target voltage magnitude of the target voltage phasor.
METHOD AND SYSTEM FOR LOCALLY CONTROLLING POWER DELIVERY ALONG A DISTRIBUTION FEEDER OF AN ELECTRICITY GRID
A method and system for locally controlling delivery of electrical power along a distribution feeder. For a feeder segment in the distribution feeder the method includes: obtaining an actual voltage magnitude at an upstream node and at a downstream node of the feeder segment, and a real power value at the upstream node; setting a target voltage phasor at the downstream node as a value when a power flow across the feeder segment is maintained, and when equal reactive power is injected at the upstream and downstream nodes that consumes all the reactive power in the feeder segment; and adjusting operation of the at least one controllable reactive power resource so that the actual voltage magnitude at the downstream node moves towards a target voltage magnitude of the target voltage phasor.
METHOD AND APPARATUS FOR PROVIDING AUTOMATED POWER TOPOLOGY MAPPING
The present system relates to a power topology mapping system for identifying which one of one or more equipment components are being powered from a specific phase of a multi-phase AC power source. The system makes use of a plurality of power receiving subsystems which each receive an AC power signal from at least one phase of the multi-phase AC power source. Each power receiving subsystem has a communications card, an identification designation unique to it, and a controller. One of the power receiving subsystems is designated as a reference power domain component. The controllers each carry out phase angle measurements associated with the AC power signal being received by its power receiving subsystem. A topology mapping subsystem is included which analyzes phase angle measurement data reported by the power receiving subsystems and determines which subsystem is being powered by which phase of the multi-phase AC signal.
SYSTEM AND METHOD FOR COMBINING A REMOTE AUDIO SOURCE WITH AN ANIMATRONICALLY CONTROLLED PUPPET
A system and method for combining a remote audio source with an animatronically controlled puppet includes the steps of entering an audio file on a user client by a person where the audio file is a statement spoken by the person. The audio file is sent to a secondary client that is remote to the user client. The secondary client has a puppet controlled by animatronics. The audio file is received by an audio circuit board that converts the audio file into movement parameters. The movement parameters are sent to at least one servomechanism mounted in the puppet to actuate the animatronics in synchronicity with the audio file. Movement of the puppet is video recorded to define a video file. The audio and video files are combined to define a final video production viewable by the person.
Systems and method for determining load balance on a three-phase power distribution system
System and methods for determining loading on supply lines of a three-phase power distribution system. Load meters are connected to the supply lines to receive power. A feeder meter is connected to a supply line designated the reference supply line having a known reference phase. A device generates a timing pulse received by the load meters and the feeder meter. The load meters and feeder meter each determine a respective time delay and feeder meter delay from receiving the timing pulse until a landmark value of the power received. The feeder meter delay corresponds to the reference phase. Each load meter and feeder meter includes a transmission device to transmit the time delay or feeder meter delay. An end server receives the time delays and feeder meter delay and assigns each load meter to a phase by comparing the time delay for a load meter to the feeder meter delay.
Systems and method for determining load balance on a three-phase power distribution system
System and methods for determining loading on supply lines of a three-phase power distribution system. Load meters are connected to the supply lines to receive power. A feeder meter is connected to a supply line designated the reference supply line having a known reference phase. A device generates a timing pulse received by the load meters and the feeder meter. The load meters and feeder meter each determine a respective time delay and feeder meter delay from receiving the timing pulse until a landmark value of the power received. The feeder meter delay corresponds to the reference phase. Each load meter and feeder meter includes a transmission device to transmit the time delay or feeder meter delay. An end server receives the time delays and feeder meter delay and assigns each load meter to a phase by comparing the time delay for a load meter to the feeder meter delay.
Electrical phase identification using a clustering algorithm
A method, apparatus, and system for identifying electrical phases connected to electricity meters are disclosed. Voltage time series data of electricity meters are collected over a preselected collection time period, and three initial kernels representing three line-to-neutral phases are generated based on voltage correlations of meter-to-meter combinations. Three new kernels are then generated based on correlation values calculated for each of the three initial kernels with each electricity meter, and electricity meters are clustered into three groups based on average correlation values associated with each electricity meter. Six new kernels representing six phases are then formed based on the average correlation value associated with each electricity meter, and a predicted phase is assigned to each electricity meter based on correlation values of the electricity meter with each of the six new kernels based on the voltage time series data.
Electrical phase identification using a clustering algorithm
A method, apparatus, and system for identifying electrical phases connected to electricity meters are disclosed. Voltage time series data of electricity meters are collected over a preselected collection time period, and three initial kernels representing three line-to-neutral phases are generated based on voltage correlations of meter-to-meter combinations. Three new kernels are then generated based on correlation values calculated for each of the three initial kernels with each electricity meter, and electricity meters are clustered into three groups based on average correlation values associated with each electricity meter. Six new kernels representing six phases are then formed based on the average correlation value associated with each electricity meter, and a predicted phase is assigned to each electricity meter based on correlation values of the electricity meter with each of the six new kernels based on the voltage time series data.
PHASE COMPENSATION IN A RESONANT PHASE DETECTOR
A system may include a sensor having a variable phase response, a dummy impedance having a known phase response, and a measurement circuit communicatively coupled to the sensor and configured to measure first phase information associated with the sensor, measure second phase information associated with the dummy impedance, and determine a phase response of the measurement circuit based on a comparison of the first phase information to the second phase information.
PHASE COMPENSATION IN A RESONANT PHASE DETECTOR
A system may include a sensor having a variable phase response, a dummy impedance having a known phase response, and a measurement circuit communicatively coupled to the sensor and configured to measure first phase information associated with the sensor, measure second phase information associated with the dummy impedance, and determine a phase response of the measurement circuit based on a comparison of the first phase information to the second phase information.