An electricity meter includes a test circuit comprising a test component and a connection component arranged to place the test component in a connected configuration in which the test component is connected to the phase conductor and to the neutral conductor, and in a disconnected configuration in which the test component is disconnected from the phase conductor and/or from the neutral conductor; a processor component arranged to control the connection component in such a manner that it places the test component in the connected configuration during a predetermined test duration to measure surplus energy consumption, and to estimate measurement error of the electricity meter from the surplus energy.

An electricity meter includes a test circuit comprising a test component and a connection component arranged to place the test component in a connected configuration in which the test component is connected to the phase conductor and to the neutral conductor, and in a disconnected configuration in which the test component is disconnected from the phase conductor and/or from the neutral conductor; a processor component arranged to control the connection component in such a manner that it places the test component in the connected configuration during a predetermined test duration to measure surplus energy consumption, and to estimate measurement error of the electricity meter from the surplus energy.

A power detection circuit for detecting powering down of a voltage domain in an integrated circuit is disclosed. The power detection circuit is placed in or near the voltage domain in the integrated circuit to provide power detection on the integrated circuit. The power detection circuit detects powering down of the voltage domain to provide an isolation enable signal to another voltage domain that interfaces with the powering down voltage domain. The isolation enable signal may be used by an isolation cell coupled to the non-powering down voltage domain to prevent corrupted logic being received from the powering down voltage domain.

A power detection circuit for detecting powering down of a voltage domain in an integrated circuit is disclosed. The power detection circuit is placed in or near the voltage domain in the integrated circuit to provide power detection on the integrated circuit. The power detection circuit detects powering down of the voltage domain to provide an isolation enable signal to another voltage domain that interfaces with the powering down voltage domain. The isolation enable signal may be used by an isolation cell coupled to the non-powering down voltage domain to prevent corrupted logic being received from the powering down voltage domain.

The present disclosure relates to a recloser control that monitors compliance of a standard for distributed energy resources (DERs). For example, a method includes obtaining power system measurements between a microgrid and an area electronic power system (EPS). The method includes determining a rate of change of power (RoCoP) based on the power system measurements. The method includes determining that a DER exceeded a threshold of the area EPS based at least in part on the RoCoP. The method includes sending a signal indicating that the DER has violated the threshold.

The present disclosure relates to a recloser control that monitors compliance of a standard for distributed energy resources (DERs). For example, a method includes obtaining power system measurements between a microgrid and an area electronic power system (EPS). The method includes determining a rate of change of power (RoCoP) based on the power system measurements. The method includes determining that a DER exceeded a threshold of the area EPS based at least in part on the RoCoP. The method includes sending a signal indicating that the DER has violated the threshold.

A power monitoring and signal unit provided with projecting connectors at a first face and sockets for receiving like connectors in a second opposite face, and circuitry for monitoring power flow through said unit when projecting connectors are plugged into a mains power outlet; and unit further provided with transceiver circuitry for the transmission and reception of data including command and control data. The power monitoring and signal unit may be in communication with a programmable sensor device comprising an individual signal and registered by an owner of individual signal unit with a central control facility. The individual signal unit communicates with central control facility when an event sensor activates said individual signal unit; central control facility executing a user-assembled schedule of predefined steps on receipt of a communication from individual signal unit, predefined steps configured or reconfigurable by an owner of said individual signal unit from a web site.

A power monitoring and signal unit provided with projecting connectors at a first face and sockets for receiving like connectors in a second opposite face, and circuitry for monitoring power flow through said unit when projecting connectors are plugged into a mains power outlet; and unit further provided with transceiver circuitry for the transmission and reception of data including command and control data. The power monitoring and signal unit may be in communication with a programmable sensor device comprising an individual signal and registered by an owner of individual signal unit with a central control facility. The individual signal unit communicates with central control facility when an event sensor activates said individual signal unit; central control facility executing a user-assembled schedule of predefined steps on receipt of a communication from individual signal unit, predefined steps configured or reconfigurable by an owner of said individual signal unit from a web site.

An apparatus for monitoring consumption of flowing substance is provided. The apparatus, connectable to the end of a pipe where fluid is flowing, includes a generator (106) configured to generate electric power from the fluid passing through the generator, sensors (112, 114) to measure the temperature of the fluid and the amount of fluid flowing in the pipe and a processing unit (116). The apparatus detects that fluid starts flowing in the pipe at a first time instant and detects that fluid stops flowing in the pipe at a second time instant and determines the temperature of the fluid and the amount of fluid that flowed through the pipe between the first and the second time instant, stores the determined values and the time elapsed between the first and the second time instants as an entry in a memory (120); and transmits the entry.

An apparatus for monitoring consumption of flowing substance is provided. The apparatus, connectable to the end of a pipe where fluid is flowing, includes a generator (106) configured to generate electric power from the fluid passing through the generator, sensors (112, 114) to measure the temperature of the fluid and the amount of fluid flowing in the pipe and a processing unit (116). The apparatus detects that fluid starts flowing in the pipe at a first time instant and detects that fluid stops flowing in the pipe at a second time instant and determines the temperature of the fluid and the amount of fluid that flowed through the pipe between the first and the second time instant, stores the determined values and the time elapsed between the first and the second time instants as an entry in a memory (120); and transmits the entry.