Energy storage based countermeasure for a delayed voltage recovery

摘要

The disclosed system includes a metering device for monitoring electrical power grid conditions, a controller for determining if the metering device is detecting a condition on an electrical grid that is indicative of a delayed voltage recovery event, and a communication device for communicating with one or more remotely located bi-directional power source modules connected to the electrical power grid, wherein the controller is programmed to send a notification via the communication device to the one or more remotely located bi-directional power source modules if the controller detects a condition indicative of delayed voltage recovery event. In some embodiments, the metering device includes a grid metering device. In some embodiments, the metering device measures power factor, and a change in the voltage and ratio of VARs to Watts.

主权项

1. A system comprising:
a grid metering device for monitoring electrical power grid conditions; a system controller for determining if the grid metering device is detecting a condition on the electrical grid that is indicative of a delayed voltage recovery event, comprising determining (1) a decrease in voltage percentage and (2) a decrease in a ratio of watts to VARs; a remotely located bi-direction power source module comprising:
a bi-directional power source configured to both inject power to the electrical power grid or extract power from the electrical power grid;an inverter for connecting the bi-directional power source to the electrical grid;a communication interface for receiving communications;a module metering device for measuring one or more characteristics of the electrical grid; anda module controller in electrical communication with the inverter, the communication interface and the module metering device; and a communication device for communicating with the communication interfaces of one or more remotely located bi-directional power source modules connected to the electrical power grid; wherein the system controller is programmed to send a notification via the communication device to the one or more remotely located bi-directional power source modules if the system controller detects a condition indicative of delayed voltage recovery event; wherein the module controller is programmed to respond to the notification of a delayed voltage recovery received from the communication device by causing the inverter to counteract the delayed voltage recovery event; and wherein the inverter counteracts the delayed voltage recovery by injecting power from the bi-direction power source into the electric grid or extracting power from the electrical grid based on the one or more characteristics measured by the module metering device.