Electrical system control for achieving long-term objectives, and related systems, apparatuses, and methods
AssigneeEnel X North America, Inc.
InventorRebecca G. Wolkoff
Life of this patent
Estimating the term…
Abstract
Systems and methods may use a low speed controller in addition to an economic optimizer to achieve long-term objectives without significantly disrupting or destabilizing an electrical system. Specific long-term objectives include maximizing a capacity factor incentive and regulating battery degradation, but the methods and systems herein can be extended to more long-term objectives. A low speed controller can adjust one or more parameters of a cost function based on the relation between the projected state of the electrical system and the one or more parameters to effectuate a change to the electrical system to attempt to comply with the long-term objective.
Claims20
A long-term controller of an electrical system, comprising:
- a memory to store a long-term objective for the electrical system;
- a communication interface to:
- receive one or more feedback variables indicating status of the electrical system;
- and
- transmit one or more long-term parameters to a short-term controller, the one or more long-term parameters associated with the long-term objective;
- and
- one or more processors to:
- determine a projected state of the electrical system using the one or more feedback variables;
- determine a relation between the projected state of the electrical system and the one or more long-term parameters associated with the long-term objective;
- adjust the one or more long-term parameters based on the relation between the projected state of the electrical system and the one or more parameters to effectuate a change to the electrical system toward compliance with the long-term objective;
- and
- provide, via the communication interface, the one or more parameters as adjusted to configure the short-term controller.
An electrical control system, comprising:
- one or more sensors coupled to one or more components of an electrical system, the one or more sensors configured to measure operating conditions of the one or more components of the electrical system;
- a short-term controller to:
- determine a set of control values for a set of control variables to effectuate a change to the electrical system toward meeting a short-term objective of the electrical system, the set of control values determined by using an optimization algorithm to identify the set of control values in accordance with one or more constraints and one or more cost elements associated with operation of the one or more components of the electrical system;
- and
- provide the set of control variables to the electrical system to effectuate the change to the electrical system toward the short-term objective;
- and
- a long-term controller-coupled to the short-term controller, the long-term controller configured to:
- track the one or more operating conditions of the electrical system;
- project a future state of the one or more components of the electrical system based on the operating conditions of the one or more components of the electrical system;
- compare the future state to a long-term objective;
- determine an adjustment factor for the optimization algorithm to effectuate a change to the electrical system toward the long-term objective based on the comparison;
- and
- provide the adjustment factor to the short-term controller.
A method of a controller of an electrical system, the method comprising:
- at a first frequency:
- determining a set of control values for a set of control variables to effectuate a change to one or more components of the electrical system toward meeting a short-term objective, the set of control values determined using an optimization algorithm;
- and
- providing the set of control variables to the electrical system to effectuate the change to the electrical system toward the short-term objective;
- and
- at a second frequency:
- determining a projected state of the electrical system based on operating conditions;
- determining a relationship between the projected state of the electrical system and an adjustment factor within the optimization algorithm;
- and
- modifying the adjustment factor based on the relationship to effectuate a change to the electrical system toward a long-term objective.
Dependencies are inferred from the claim text.