A method for controlling a power grid includes using a communication device to receive first data messages with first phasor measurement data from a first phasor measurement unit. A reference device is used to determine a deviation between the first phasor measurement data and reference data. The first phasor measurement data are recognized as plausible when the deviation lies below a previously defined upper threshold value and/or above a previously defined lower threshold value. A corresponding grid control arrangement is also provided.

A smart grid information processing apparatus is applied to a smart grid including a transmission grid being connected to a plurality of electrical equipment units and a communication network transmitting information of at least an amount of electric energy transmitted through the transmission grid. The information processing apparatus is configured to execute a first recording process and a withdrawal process. The first recording process is a process of recording virtual electrical storage capacities in association with respective users, each of the virtual electrical storage capacities corresponding to an amount of electric energy in which a corresponding user is allowed to receive from the smart grid. The withdrawal process is a process of reducing the virtual electrical storage capacity of the user according to an amount of electric energy that has been received by the user from the transmission grid.

Implementations of the disclosed subject matter may provide systems and methods of providing energy from a community solar energy generating system to a customer. The customer may have an account with a first energy utility, and the community solar energy generating system may be associated with a second energy utility. The first energy utility may be located in a first geographic area and both the community solar energy generating system and the second energy utility are located in a second geographic area. An allocation of energy produced by a community solar energy generating system may be determined for the customer based on energy usage based on the received utility account information, an energy output of the community solar energy generating system, and a credit rate. Information about the determined energy allocation and the credit rates may be shared between the second energy utility and the first energy utility.

A method of controlling a microgrid includes receiving, by a power management system, PMS, of the microgrid, operating point values for a plurality of controllable assets. The method includes determining, by the PMS, an asset headroom. The method includes determining, by the PMS, a modified operating point value that is dependent on the received operating point value of the controllable asset, the determined asset headroom of the controllable asset, and a total power offset of the microgrid. The method includes controlling, by the PMS, the controllable assets for which the modified operating point values have been determined in accordance with the modified operating point values.

A smart energy device performs a method which includes executing, during a first time period, a first control event wherein an operational parameter of the smart energy device is controlled by the first control event during a first time period. A second control event is then executed, during a second time period, wherein the operational parameter of the smart energy device is controlled by the second control event during a second time period beginning at an end of the first time period. In response to detection of a first defined trigger condition, the method includes opting out of control of the operational parameter of the smart energy device by the second control event and transitioning to control of the operational parameter of the smart energy device by the first control event during a third time period following the detection of the first defined trigger condition.

The distributed power supply system includes: a communicator configured to receive a first message from a power management server configured to control the distributed power supply and receive a second message from an equipment management server configured to monitor the distributed power supply; and a controller configured to control the distributed power supply based on the first message and the second message. If the first message and the second message conflict with each other, the controller controls the distributed power supply based on the second message preferentially over the first message.

Methods and apparatus are provided herein. For example, a method for maintaining a power conversion system can include transmitting, to a computing apparatus in operable communication with the power conversion system, an alert message indicating non-working microinverters and which of the non-working microinverters are under warranty and eligible for replacement; receiving, from the computing apparatus, a request for replacement for the non-working microinverters; and transmitting, to the computing apparatus, an acknowledgment message indicating that the request has been successfully received and replacements for the non-working microinverters are being shipped.

Responding to grid events is provided. The system determines, based on an event, to modify an electrical load of a site. The system selects a parameter for the site to adjust to modify the electrical load. The system identifies a script constructed from previously processed interactions between a human-machine interface of the building management system to adjust the parameter for the site. The system establishes a communication session with a remote access agent executed by a computing device of the site to invoke the building management system of the site. The system generates a sequence of commands defined by the script to adjust the one or more parameters for the site. The system transmits the sequence of commands to cause the remote access agent to execute the sequence of commands on the human-machine interface of the building management system to modify the electrical load of the site.

According to an aspect, an information processing device includes: a receiver configured to receive information related to a plurality of smart meters; a controller configured to determine presence or absence of an anomaly in each of the smart meters based on a reception status of the information from each of the smart meters; and an output unit configured to output information indicating presence or absence of an anomaly in each of the smart meters. The receiver receives the information from the smart meters in a cycle of a first predetermined time. The controller determines that an anomaly is occurring in a smart meter from which information has not been obtained for a second predetermined time that is longer than the first predetermined time. The second predetermined time is n times as long as the first predetermined time, and n is equal to or greater than 2.

The invention relates to a method and apparatus for monitoring the condition of subsystems within a renewable generation plant or microgrid which are using Supervisory Control and Data Acquisition (SCADA) systems for allowing plant operators to monitor and interact with a plant via human machine interfaces.