A method for characterizing power quality events in an electrical system includes deriving electrical measurement data for at least one first virtual meter in an electrical system from (a) electrical measurement data from or derived from energy-related signals captured by at least one first IED in the electrical system, and (b) electrical measurement data from or derived from energy-related signals captured by at least one second IED in the electrical system. In embodiments, the at least one first IED is installed at a first metering point in the electrical system, the at least one second IED is installed at a second metering point in the electrical system, and the at least one first virtual meter is derived or located at a third metering point in the electrical system. The derived electrical measurement data may be used to generate or update a dynamic tolerance curve associated with the third metering point.

Systems and methods are disclosed for communicating with and controlling load control systems of respective user environments from locations that are remote from the user environments.

Power control apparatus for modulating electrical power signals and methods for modulating electrical power signals are disclosed. In one example, a power control apparatus comprises a magnetic core comprising a first limb and a second limb, with a primary winding around the first limb, and a secondary winding around the second limb. The power control apparatus comprises a voltage source converter having an AC connection, a DC connection, and a controller. The controller is configured to receive data associated with parameters of a first signal in the primary winding, compare the parameters of the first signal to parameters of a reference signal for the secondary winding, determine a harmonization signal which, when applied to the first limb, causes a second signal in the secondary winding to approximate the reference signal. The controller is configured to cause application of the harmonization signal to the first limb using the voltage source converter.

An active inductor assembly for a data over power (DoP) system includes a first active inductor and a second active inductor. The first active inductor includes a first pass element and first control circuitry. The first control circuitry is configured to control the first pass element such that (i) the first pass element emulates a first inductor in response to changing voltage across the first pass element and (ii) the first pass element regulates a voltage drop across the first pass element during steady-state operation. The second active inductor includes a second pass element and second control circuitry. The second control circuitry is configured to control the second pass element such that (i) the second pass element emulates a second inductor in response to changing voltage across the second pass element and (ii) the second pass element regulates a voltage drop across the second pass element during steady-state operation.

A modular remote current monitoring device plugs into a single-pole mounting location on a power distribution panel of a direct-current (DC) power system, e.g., where a circuit breaker, fuse, shorting device, or other target device would ordinarily be installed. The target device plugs into the modular device (e.g., via bullet-type connectors) such that an individual (e.g., single-pole) current is conveyed between the power distribution panel and the target device via the modular device. The modular device senses an amperage of the individual current and reports the sensed amperage to a remotely located end user or controller. The end user or controller similarly may interrupt (disable) or reset (enable) the current from a remote location via the modular device.

A network unit may be operatively attached to power lines of an interconnected power system and/or a device such as a power module that may further include a communication interface. The network unit may be operable to superimpose a first signal representative of a sensed parameter of the power system onto the power lines, thereby to transmit the first signal to other power modules in the interconnected power system or to a power device in interconnected power system. The network unit may receive a second signal of the parameter superimposed onto the power lines from another network unit.

A photovoltaic system includes: a plurality of solar cell modules each including a plurality of solar cells, at least one monitoring device configured to measure a module voltage of a corresponding solar cell module from among the plurality of solar cell modules, and a current measuring device that receives the measured module voltage from the at least one monitoring device and is connected to the plurality of solar cell modules through a power line to measure a module current of the plurality of solar cell modules.

A system of modules which control and measure energy usage at a building which are in communication with a software program executing on a remote server controlled by a third party. The third party said usage via the software program which communicates with the modules to modify energy usage and demand for energy and is responsible or liable for energy usage charges the building where the third party does not actually use the energy.

A network system includes a network architecture including: a network layer configured to define an entirety of an electric power network constituted from electric power grids; a local network layer configured to define a local network corresponding to electric power grid groups and forming a part of the electric power network; a grid layer configured to define the electric power grids; a physical layer configured to define constituent elements included in the electric power grids; a first layer configured to define the information communication network that is associated with the network layer; a second layer configured to define the information communication network that is associated with the local network layer; a third layer configured to define the information communication network that is associated with the grid layer; and space, a fourth layer configured to define the information communication network that is associated with the physical layer.

A system includes a flexible datacenter and a power generation unit that generates power on an intermittent basis. The flexible datacenter is coupled to both the power generation unit and grid power through a local station. By various methods, a control system may detect a transition of the power generation unit into a stand-down mode and selectively direct grid power delivery to always-on systems in the flexible datacenter.