Estimation of Power System Inertia from Electromechanical Modes
(2020) 55th International Universities Power Engineering Conference, UPEC 2020- Abstract
The inertia of many power systems is expected to decrease as more wind and solar power is introduced. With low inertia, a need to estimate it arises. The estimation method should preferably work during normal operation, in order to ensure that the grid frequency can be maintained during any sudden disturbance. This study proposes a new method for inertia estimation, based on electromechanical modes. The method consists of two steps, the first being estimation of modes, which is done from normal frequency variations, and the second being estimation of the inertia from the modes, which is done using a model of the system. The rigid body mode, in which all machines in the system participate, and inter-area and other inter-generator modes... (More)
The inertia of many power systems is expected to decrease as more wind and solar power is introduced. With low inertia, a need to estimate it arises. The estimation method should preferably work during normal operation, in order to ensure that the grid frequency can be maintained during any sudden disturbance. This study proposes a new method for inertia estimation, based on electromechanical modes. The method consists of two steps, the first being estimation of modes, which is done from normal frequency variations, and the second being estimation of the inertia from the modes, which is done using a model of the system. The rigid body mode, in which all machines in the system participate, and inter-area and other inter-generator modes are all possible to use. The method was applied to simulated systems with results indicating that it is potentially useful for inertia estimation.
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- author
- Johnsson, Vidar and Samuelsson, Olof LU
- organization
- publishing date
- 2020-09
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- frequency dynamics, frequency stability, Inertia, mode estimation, rigid body mode
- host publication
- 2020 55th International Universities Power Engineering Conference (UPEC) : Verifying the Targets - Verifying the Targets
- article number
- 9209861
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 55th International Universities Power Engineering Conference, UPEC 2020
- conference location
- Virtual, Torino, Italy
- conference dates
- 2020-09-01 - 2020-09-04
- external identifiers
-
- scopus:85095589284
- ISBN
- 9781728110783
- DOI
- 10.1109/UPEC49904.2020.9209861
- language
- English
- LU publication?
- yes
- id
- 78d506db-59be-4b79-a7c4-7ed03918ce60
- date added to LUP
- 2021-01-12 10:06:36
- date last changed
- 2022-04-26 23:24:24
@inproceedings{78d506db-59be-4b79-a7c4-7ed03918ce60, abstract = {{<p>The inertia of many power systems is expected to decrease as more wind and solar power is introduced. With low inertia, a need to estimate it arises. The estimation method should preferably work during normal operation, in order to ensure that the grid frequency can be maintained during any sudden disturbance. This study proposes a new method for inertia estimation, based on electromechanical modes. The method consists of two steps, the first being estimation of modes, which is done from normal frequency variations, and the second being estimation of the inertia from the modes, which is done using a model of the system. The rigid body mode, in which all machines in the system participate, and inter-area and other inter-generator modes are all possible to use. The method was applied to simulated systems with results indicating that it is potentially useful for inertia estimation.</p>}}, author = {{Johnsson, Vidar and Samuelsson, Olof}}, booktitle = {{2020 55th International Universities Power Engineering Conference (UPEC) : Verifying the Targets}}, isbn = {{9781728110783}}, keywords = {{frequency dynamics; frequency stability; Inertia; mode estimation; rigid body mode}}, language = {{eng}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Estimation of Power System Inertia from Electromechanical Modes}}, url = {{http://dx.doi.org/10.1109/UPEC49904.2020.9209861}}, doi = {{10.1109/UPEC49904.2020.9209861}}, year = {{2020}}, }