Load isolation consumption management systems and methods

摘要

Disclosed herein are power management systems for controlling recorded electrical demand by isolating loads from a utility distribution grid connection. The loads are isolated when an energy storage system (ESS) is placed in series between the loads and the grid, with a charger that keeps the ESS from depleting and a power converter that provides energy to the loads from the ESS. A system controller may be enabled to manage the charging of the ESS by the charger relative to a consumption metric. In some embodiments, the loads are categorized, controlled, or curtailed by the controller and may be isolated from other loads. Some embodiments include bypass features or bimodal connections. Additional methods of control to prevent depletion of the ESS are also set forth. Systems herein can prevent or limit demand charges, protect the utility grid from backflow and other dangers, and raise the customer's effective utility service limit.

主权项

1. An electrical system for managing electricity consumption measured by a utility provider of a site, comprising:
an energy storage device connected inline and in series between a utility energy source and a load of the site, such that the load is isolated from the utility energy source, the energy storage device having an energy storage capacity and being bi-modally connected to the utility energy source to provide energy to the load whether the energy storage device is off-grid or on-grid, the load comprising at least one energy-consuming electrical system; a charger configured to charge the energy storage device from the utility energy source using a rectifier; and a system controller configured to receive a consumption metric, wherein the system controller is enabled to manage the charging of the energy storage device by the charger relative to the consumption metric, the system controller being enabled to increase or decrease consumption of the charger upon receiving a signal from the utility provider or a site operator to increase or decrease consumption.