Patent classifications
G05D5/00
Process to reduce the probability of large cascading failures in a transmission network
Described is a system for decreasing the frequency of large cascading failures in a transmission network. Based on sensors distributed throughout the transmission network, the system determines if a cascading failure is present in a transmission network. Following determination of the cascading failure, the system activates at least one switch of a plurality of switches distributed in the transmission network in order to switch transmission lines, thereby altering connectivity in the transmission network.
Power distribution systems and methods of operating power distribution systems with a communication network
An example electrical power distribution system includes a plurality of circuit protection devices coupled between an electrical power source and a plurality of electrical loads. Each circuit protection device includes a trip unit, a network interface, a processor, and a memory. The trip unit is configured to selectively trip to prevent a flow of electrical current through said circuit protection device. The network interface is communicatively coupled to a communication network including the plurality of circuit protection devices. The memory stores instructions that, when executed by the processor, cause the processor to transmit, using the network interface, circuit protection device data to the network. The circuit protection device data is formatted according to a network communication protocol of the communication network.
Methods and systems for controlling generating units and power plants for improved performance
A method for controlling a power plant that includes: presenting on a first user device a proposed version of the generating plan for a future generating period; receiving at the first user device a user input making a first modification to the proposed version to create a bid version of the generating plan; presenting on a second user device the bid version of the generating plan so that an indicator indicates the aspect that was modified by the first modification; receiving a user input on the second user device for creating a bid based on the bid version of the generating plan; transmitting from the second user device the bid; receiving at the second user device a response comprising an awarded fleet capacity; and transmitting from the second user device to the first user device an awarded plant-level capacity based on the awarded fleet capacity.
Autonomous rail or off rail vehicle movement and system among a group of vehicles
An Automous vehicle (AV) is configured on a railway system. The AV can be configured among the other vehicles and railway to communicate with a rider on a peer to peer basis to pick up the rider on demand, rather than the rider being held hostage to a fixed railway schedule. The rider can have an application on his/her cell phone, which tracks each of the AVs, and contact them using the application on the cell phone.
Demand response dispatch system employing weather induced energy consumption
A method for dispatching buildings in a demand response program event including generating data sets for each of the buildings, each set having energy consumption values along with corresponding time and outside temperature values, where the energy consumption values within each set are shifted by one of a plurality of lag values relative to the corresponding time and outside temperature values, and where each of the plurality of lag values is different from other ones of the plurality of lag values; performing a machine learning model analysis on each set to yield machine learning model parameters and a residual; determining a least valued residual from all residuals yielded, the least valued residual indicating a corresponding energy lag for the each of the buildings; and using energy lags for all of the buildings to generate a dispatch schedule for the demand response program event according to a prioritization of the energy lags.
Apparatus and method for weather induced facility energy consumption characterization
A method for characterizing buildings, including retrieving a plurality of baseline energy use data sets for the buildings from a baseline data stores; generating energy use data sets for each of the buildings, each of the energy use data sets comprising energy consumption values along with corresponding time and outside temperature values, where the energy consumption values within each of the sets are shifted by one of a plurality of lag values relative to the corresponding time and outside temperature values, and where each of the plurality of lag values is different from other ones of the plurality of lag values; performing a machine learning model analysis on the each of the plurality of energy use data sets to yield corresponding machine learning model parameters and a corresponding residual; determining a least valued residual from all residuals, the least valued residual indicating a corresponding energy lag for the each of the buildings; and categorizing the buildings into types according to similar energy lags.
Methods and apparatuses for charging of electric vehicles
A method controlling reservations at an electric vehicle charging station is disclosed. The method includes: sending, from the mobile device, the charge transfer request for the electric vehicle of a first user at an electric vehicle charging station to the cloud server, wherein a user of the mobile device is associated with the electric vehicle to be charged; in response to authorizing the charge transfer request using identification information and credit account information received from the mobile device, charging the electric vehicle of the first user at the electric vehicle charging station for a first charging session; reserving a second charging session for an electric vehicle of a second user; and facilitating communication with the first user and the second user to modify the scheduled end time of the first charging session for the first user an amount of time and modify the scheduled start time of the second charging session of the second user an amount of time.
PV stop potential voltage and hazard stop system
A system to interrupt the line or supply side power or charged system of any building, appliance, process, and the like, so as to render the system without charge or current output outside of the junction box/enclosure or equipment load supply connection so that emergency first responders or solar/any technician, authorized personnel in any field, system maintenance crew may avoid electrocution, chemical or machine/appliance hazard in the presence of fire, explosion, structural failure/compromise, moisture, flammables, caustics, hazmat, water stream, mist, fogging, physical damage or servicing of the system. The system can be engaged for any anticipated disaster such as fire, hurricane, tornado, earthquake, flood, and the like.
Power-ramping pitch feed-forward
Embodiments of the present disclosure generally relate to apparatus and methods for preventing power dips associated with power ramping in wind turbines. One embodiment of the present disclosure provides a method for stabilizing power output in a wind turbine, which includes tracking a rate of change in an external reference, such as an external power reference or external torque reference, computing a feed-forward pitch angle adjustment according to the rate of change in the external power reference, and sending the feed-forward pitch angle adjustment to the wind turbine to adjust a pitch angle of rotor blades simultaneously with adjusting power output according to the external reference.
Grid independent operation control unit, power conditioner, and grid independent operation control method
A grid independent operation control unit includes a load current estimator to estimate a load current supplied to stand-alone power system in accordance with an output current of the inverter and an output voltage, and a feedback controller configured to PWM control the inverter at a duty ratio feedback calculated to cause the inverter to output an output voltage command value in accordance with the output voltage and the load current. The feedback controller is configured to PWM control the inverter at a duty ratio feedback calculated for output of a normalized output voltage command value obtained by normalizing the output voltage command value with the DC bus voltage in accordance with normalized output voltage obtained by normalizing the output voltage with the DC bus voltage and normalized load current obtained by normalizing the load current with the DC bus voltage.