Embodiments of the present disclosure provide systems and methods directed to improved power system stabilization and oscillation damping control. In operation, a computing device may receive frequency data from a plurality of sensors distributed within a power system. The computing device may calculate an estimate of a speed of a center of inertia signal based at least on the frequency data. A controller may calculate a control error signal for the power system based at least on the estimated speed of the center of inertia signal. The controller may further calculate an auxiliary output signal based at least on the calculated control error. An actuator may utilize the auxiliary output signal to provide an output configured to improve the stability of the power system.

Provided is a method for controlling at least two frequency-converter-based infeeders. The method includes specifying a first droop for a first frequency-converter-based infeeder and specifying a second droop for a second frequency-converter-based infeeder, where the second droop is different from the first droop. The method includes, controlling the first frequency-converter-based infeeder in dependence on the first droop, and controlling the second frequency-converter-based infeeder in dependence on the second droop.

A power conversion device which converts electrical power generated by a distributed energy resource into electrical power corresponding to a power system is provided, comprising a communication unit which periodically receives, via communication, reception information indicating whether an accident has occurred in the power system, a disconnection unit which disconnects the distributed energy resource from the power system when the communication unit receives the reception information indicating accident occurrence, and a control unit which starts an islanding determination process for determining whether the distributed energy resource is in an islanding state by detecting a change in AC characteristics in the power system, when the communication unit does not receive the reception information for a predetermined first period.

A method includes injecting a probe signal into a power system; receiving a measurement of an operational parameter of the power system responsive to injecting the probe signal into the power system; generating a transfer function model of the power system based on the measurement of the operational parameter of the power system and the probe signal; and updating at least one control parameter of a Wide Area Damping Controller (WADC) communicatively coupled to the power system based on the transfer function model.

System for controlling voltage supply to a portion of a distribution grid. The portion of the grid includes a substation providing one or more transformers operable to increase or decrease the voltage supplied to consumers within the portion of the grid. The voltage control system providing a data set can include a previously measured power consumption associated with previously measured values of (a) property(ies) for a portion of the grid, the property(ies) being one of voltage, current, frequency or load, or a combination thereof. The voltage control system can provide a measurement device to measure the property(ies) supplied within the portion of the grid. The voltage control system can provide a processing device to determine from the previously measured values of the property(ies) in the data set a most likely effect of altering the value of the property(ies) from a first value to a second value, on the power consumption.

Provided an intermittent characteristic-based demand-side resource coordination control method and system. The method includes: receiving a control request, where the control request is used for requesting control of demand-side resources having an intermittent characteristic; determining a target total control quantity of demand-side resources; determining a coordination strategy of multiple demand-side resources and an action quantity of each of the multiple demand-side resources; and performing coordinated control on the multiple demand-side resources based on the target total control quantity of demand-side resources, the coordination strategy, and the action quantity of each of the multiple demand-side resources.

A method for operating a charging station for vehicles may include suppling the charging station with electric energy via a multiple phase supply system, providing, by the charging station, multiple phase lines for an electric power supply of vehicles, supplying a vehicle a charging current via a phase line, measuring at least one supply system voltage that is present on the phase line that supplies the vehicle with the charging current, comparing the measured at least one supply system voltage and a stored rated voltage range, and adjusting the charging current if the measured at least one supply system voltage is outside the stored rated voltage range.

Methods and systems for a synchronverter power control during unbalanced grid conditions is disclosed. The system includes a synchronverter coupled with a power supply grid, a power reference generator, configured to receive a terminal voltage measurement vector v.sub.t and a current measurement vector i from the synchronverter, and generate an active power P.sub.f and a reactive power Q.sub.f, a synchronverter control unit connected to the power reference generator and configured to process the active power P.sub.f and the reactive power Q.sub.f and generate an electromotive force (EMF) vector e, and an active and reactive power control unit, connected between the synchronverter control unit and the synchronverter, configured to receive the electromotive force (EMF) vector e and the terminal voltage measurement vector v.sub.t, and regulate the current measurement vector i to eliminate power oscillations and current harmonics in the synchronverter during unbalanced grid conditions.

A method and associated system for providing grid-forming (GFM) control of an inverter-based resource (IBR) connected to an electrical grid include monitoring the electrical grid for grid events that cause a change in one or both of grid frequency and angle. Via a controller, an active power response of the IBR to the grid event is controlled by changing an angle of the IBR voltage relative to grid voltage in a manner so as to mimic an active power response of an IBR having a certain desired impedance that may similar to or different from a hardware impedance of the IBR itself.

In order to suppress frequency fluctuation caused by a load frequency, an AR calculating section calculates an AR using system frequency deviation and tie-line power flow deviation as inputs. An output distribution ratio determining section determines a ratio of output distribution according to merit order based on the AR calculated by the AR calculating section. An output distributing section determines output distribution according to an output change speed based on the output distribution ratio determined by the output distribution ratio determining section according to the output change speed. An output distributing section determines output distribution according to the merit order based on the output distribution ratio determined by the output distribution ratio determining section according to the merit order. An output distribution instruction value determining section determines an output distribution instruction value to each regulated power source using, as inputs, output distribution values determined by the output distributing sections.