System and method for stability monitoring, analysis and control of electric power systems
AssigneeThe Regents of the University of California
InventorsIgor Mezic, Yoshihiko Susuki
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Abstract
A system and method for stability monitoring, analysis, and control of energy systems, such as electric power systems, is provided. Specifically, the system and method described herein use a Koopman mode analysis to represent the operation of individual components in an energy system and/or to determine and rank a level of stability of the individual components in the energy system. The system and method described herein also use a Koopman mode analysis to determine optimal and/or safe times to release energy stored in storage systems.
Claims22
A system for stability monitoring, analysis, and control in an energy system, the system comprising:
- a computer data repository configured to store physical data measured by at least one physical sensor;
- and
- a computing system comprising one or more computing devices, the computing system in communication with the computer data repository and programmed to implement:
- a stability analyzer configured to:
- retrieve the physical data from the computer data repository, wherein the physical data corresponds to a first power entity, and wherein the physical data comprises data of a first type;
- determine a plurality of growth rate values and a plurality of frequency values associated with the first power entity using the retrieved physical data and a spectral analysis technique, wherein each growth rate value in the plurality of growth rate values is associated with a frequency in a range of frequencies, and wherein each frequency value in the plurality of frequency values is associated with a frequency in the range of frequencies;
- determine a level of stability of the first power entity based on at least one growth rate value in the plurality of growth rate values;
- generate user interface data for rendering a user interface on a computing device, wherein the user interface data comprises a representation of the first power entity and an indication of the determined level of stability of the first power entity;
- and
- control the first power entity based on the determined level of stability of the first power entity.
A method for stability monitoring, analysis, and control in an energy system, the method comprising:
- as implemented by a computer system comprising one or more computing devices, the computer system configured with specific executable instructions,
- retrieving physical data, wherein the physical data is measured by at least one physical sensor and corresponds to a first power entity, and wherein the physical data comprises data of a first type;
- determining a plurality of growth rate values associated with the first power entity using the retrieved physical data and a spectral analysis technique, wherein one or more individual growth rate values in the plurality of growth rate values are associated with a frequency in a range of frequencies;
- determining a level of stability of the first power entity based on at least one growth rate value in the plurality of growth rate values;
- generating user interface data for rendering a user interface on a computing device, wherein the user interface data comprises a representation of the first power entity and an indication of the determined level of stability of the first power entity;
- and
- controlling the first power entity based on the determined level of stability of the first power entity.
A non-transitory computer-readable medium having stored thereon an stability analyzer for determining stability of power entities, the stability analyzer comprising executable code that, when executed on a computing device, implements a process comprising:
- retrieving physical data, wherein the physical data is measured by at least one physical sensor and corresponds to a first power entity, and wherein the physical data comprises data of a first type;
- determining a plurality of growth rate values associated with the first power entity using the retrieved physical data and a spectral analysis technique, wherein one or more individual growth rate values in the plurality of growth rate values is associated with a frequency in a range of frequencies;
- determining a level of stability of the first power entity based on at least one growth rate value in the plurality of growth rate values;
- generating user interface data for rendering a user interface on a computing device, wherein the user interface data comprises a representation of the first power entity and an indication of the determined level of stability of the first power entity;
- and
- controlling the first power entity based on the determined level of stability of the first power entity.
Dependencies are inferred from the claim text.