Devices, systems and methods are provided that introduce electrical components to alter the electrical characteristics of power delivery systems in residential and commercial power circuits to: prevent the disaggregation of electrical utility consumption data by alteration of the composite load profiles. The device and method prevent accurate identification of powered devices, their presence, their operating characteristics, their consumption data, and any inferences of power device user's behaviors and activities by the analysis of disaggregated data. The operation of the device may include any of a range of steps, actions and instructions to introduce altering impedance elements and filtration circuits in coordinated fashion with the operation of the targeted devices to be masked.

A system for transmitting power and data, particularly including a half-wave control, includes a control unit connected to grid phases, the system having a phase-failure detection device which has bistable multivibrators, especially bistable multivibrators assigned to a respective grid phase. Each bistable multivibrator has an input for setting and an input for resetting, one of the inputs being connected to a digitizing device for digitizing the positive half-waves of a respective grid phase, the other of the inputs being connected to a digitizing device for digitizing the negative half-waves of a respective grid phase. The effective value of the output voltage of the bistable multivibrator is compared by a comparison device to a threshold value to detect a phase failure.

A method for component voltage limitation, and an apparatus and a system for applying the same. At least one photovoltaic cell in a photovoltaic-cell string is controlled to operate in a voltage-limited mode, in response to receiving an instruction for enabling voltage limitation. Thereby, the voltage of the photovoltaic-cell string is reduced. A quantity of photovoltaic modules connected in series can be increased, while a highest voltage of the system is guaranteed not to exceed a corresponding requirement. A system cost is reduced. The photovoltaic cell operating in the voltage-limited mode is controlled to resume a normal output, in response to receiving the instruction for suspending voltage limitation. The output voltage of the photovoltaic-cell string is increased. Thereby, a rate of utilization on a direct voltage, and a PVIR of DC/AC are improved for the photovoltaic system.

A power analyser for analysing an electrical supply to a load, comprising: a processor; an analogue signal module interfaced with the processor, wherein the analogue signal module is configured to: make analogue signal measurements of the electrical supply, and provide raw analogue data corresponding to said measurements to the processor; and wherein the processor is configured to: access a model suitable for, or associated with, the electrical supply and/or the load, and generate a modified electrical supply estimate in accordance with the model and the raw analogue data.

A method for identification of a power supply source, a power supply system and a system having at least one load is disclosed. The at least one load receives power from the power supply system and makes measurements of the AC output signal of the power supply source. A supervisory device operatively coupled to the at least one load is disclosed. The supervisory device receives measurements from the at least one load and determines an identification of the power supply source of the power supply system by demodulating and decoding the received measurements.

Devices, systems and methods are provided that introduce electrical components to alter the electrical characteristics of power delivery systems in residential and commercial power circuits to: prevent the disaggregation of electrical utility consumption data by alteration of the composite load profiles. The device and method prevent accurate identification of powered devices, their presence, their operating characteristics, their consumption data, and any inferences of power device user's behaviors and activities by the analysis of disaggregated data. The operation of the device may include any of a range of steps, actions and instructions to introduce altering impedance elements and filtration circuits in coordinated fashion with the operation of the targeted devices to be masked.

This document relates to electricity management using modulated waveforms. One example modulates electricity to obtain modulated electricity having at least two different alternating current frequencies including a first alternating current frequency and a second alternating current frequency. The example delivers the modulated electrical power having the at least two different alternating current frequencies to multiple different electrical devices, including a first electrical device configured to utilize the first alternating current frequency and a second electrical device configured to utilize the second alternating current frequency. The modulated electricity can be delivered at least partly over an electrical line shared by the first electrical device and the second electrical device.

A method includes presenting a set location setting within a graphical user interface (GUI) of a mobile device, and then detecting a selection of the set-location setting. The method proceeds by detecting at least one on-site network in communication with the mobile device in response to the selection of the set location setting, identifying a network name associated with the at least one on-site network, and associating the network name of the on-site network with an on-site zone of a site associated with the mobile device. The method then proceeds by altering an operating condition of a network device located at the site in response to a location of the mobile device relative to the on-site zone.

A method includes presenting a set location setting within a graphical user interface (GUI) of a mobile device, and then detecting a selection of the set-location setting. The method proceeds by detecting at least one on-site network in communication with the mobile device in response to the selection of the set location setting, identifying a network name associated with the at least one on-site network, and associating the network name of the on-site network with an on-site zone of a site associated with the mobile device. The method then proceeds by altering an operating condition of a network device located at the site in response to a location of the mobile device relative to the on-site zone.

This document relates to electricity management using modulated waveforms. One example modulates electricity to obtain modulated electricity having at least two different alternating current frequencies including a first alternating current frequency and a second alternating current frequency. The example delivers the modulated electrical power having the at least two different alternating current frequencies to multiple different electrical devices, including a first electrical device configured to utilize the first alternating current frequency and a second electrical device configured to utilize the second alternating current frequency. The modulated electricity can be delivered at least partly over an electrical line shared by the first electrical device and the second electrical device.