In one embodiment, a system includes a coordinated distribution optimization (CDO) system. The CDO system includes a processor configured to coordinate execution of a plurality of independent electrical network applications. Each of the plurality of independent electrical network applications is configured to alter one or more operational parameters of a power grid based on one or more respective objectives and based on power grid operational data, and the execution of the plurality of independent electrical network applications is coordinated by the CDO system to block the power grid from entering an abnormal state. The CDO system further comprises a network interface configured to receive the power grid operational data from a controller of the power grid, and wherein the power grid operational data comprises current values for the one or more operational parameters of the power grid.

A system and method for controlling power flow in a hybrid power system includes a controller in communication with the hybrid power system. The controller is also in communication with at least one knowledge system to receive information related to power generation or power consumption within the hybrid power system. The controller generates a control command for each of the power converters in the hybrid power system and maintains a log of power flow to and from each device in the hybrid power system. The controller is also in communication with a provider of the utility grid and may generate the control commands for each of the power converters in response to commands provided from the provider of the utility grid.

Systems and methods herein provide for adaptive subband compression of power signals in a power system. In one embodiment, a system includes an encoder is operable to partition sensor measurements into frequency subbands (e.g., including an interharmonic subband), centered at integer multiples of the power system's fundamental frequency (e.g., 50 Hz or 60 Hz). The encoder may also be operable to detect active subbands, and to compress the at least one active subband. The system also includes a data concentrator operable to transmit the at least one compressed subband to a processor for analysis. The system also includes a decoder at a processing location (a substation, a concentrator, or the control center) operable to parse the compressed waveforms into subbands, to interpolate and decompress at least one compressed subband, and to synthesize the decompressed subbands as an approximation of the original waveform (e.g., subject to reconstruction error requirements).

A method and system to control distributed energy resources in an electric power system includes generation, storage and controllable loads. The system uses time synchronized measurements of voltage phasor and current phasors and their derivative information that may include real and reactive power to regulate and decouple both static and dynamic effects of real and reactive power flow through the local electric power system connected to the area electric power system. The method and system provides precise real and reactive power demand set point pairs; damping of real and reactive power fluctuations in the local electric power system; decoupling between real and reactive power demand response set points by means of a multivariable control system that uses time synchronized measurements of voltage and current phasors and their derivative information.

Attributes of a power system having one or more distributed energy resources are characterized by continuously receiving data comprising a power data stream having at least two components and derived from at least one distributed energy resource. A control data stream comprising at least two components is generated. An error data stream is determined based on a difference between respective components of the power data stream to components of a reference data stream comprising at least two components. The error data stream and the reference data stream are processed to generate the control data stream. The control data stream is continuously output to enable control and/or monitoring of the power flow of at least one distributed energy resource.

A method for modelling load in a power grid is provided. The method includes obtaining measurement data from a measurement device in the power grid, identifying one or more voltage adjustment events in the power grid from the measurement data, and generating a load model based on one or more voltage factors computed using the one or more voltage adjustment events.

A method for a faulted line identification in a power network, including, at a generic time-instant, solving a plurality of parallel phasor measurement units based real-time state estimators, the state estimators having among each other different and augmented network topologies, each of the augmented network topologies comprises an original network topology, which includes a plurality of real buses and real lines forming a connected graph mapping the real network topology, and a single additional virtual bus located along one of the real lines, the line in which the virtual bus is located has to be different for each of the augmented network topologies.

A voltage monitoring control device includes: a transceiver unit communicating with local voltage control devices adjusting a control amount of voltage control apparatuses that control a voltage on a power distribution line in a high-voltage system every second cycle based on a command value updated every first cycle; an indicatable-range updating unit determining an indicatable range, which is a range of reactive power indicatable to the local voltage control device, based on a control result received via the transceiver unit from the local voltage control device that controls a reactive-power-modified voltage control apparatus, the control result being a limit-value time or a limit-value-time ratio; and a reactive-power determination unit determining a reactive-power command value, which is a command value updated every first cycle based on the indicatable range and transmitted, via the transceiver unit, to the local voltage control device that controls the reactive-power-modified voltage control apparatus.

A method for optimizing consumption of reactive power in an electrical network includes a system for monitoring and adjusting electrical power supply, the system including an electrical generator, electrical loads, a power compensation system, an electric transmission line, an electro-digital processor and a remote-readable meter. The method further includes: measuring the dataset of the electrical loads via at least one remote-readable meter; collecting the dataset of the electrical loads and transmitting it to the electro-digital processor in order to establish data curves; calculating a power factor of the electrical loads; enabling reactive power compensation by setting the type and configuration of the compensation systems to be installed, when the calculated power factor has a value lower than or equal to a predefined threshold value; and compensating for reactive power by actuating the installed compensation systems.

Distributed grid intelligence can enable a virtual power grid. Multiple consumer nodes can have local power sources, and be coupled to a same point of common coupling (PCC). The consumer nodes can be controlled by distributed control nodes at the consumer nodes. The control nodes control the distribution of power from the local power sources based on local power demand of each respective consumer node, and also based on distribution of power from the other respective control node. Thus, consumer nodes can share power generated locally, but operate independently without the need for central management or a central power plant.