Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution Grids
This paper proposes the development of a three-phase state estimation algorithm, which ensures complete observability for the electric network and a low investment cost for application in typical electric power distribution systems, which usually exhibit low levels of supervision facilities and meas...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-04-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/12/7/1327 |
| _version_ | 1811301392040591360 |
|---|---|
| author | Thiago Mota Soares Ubiratan Holanda Bezerra Maria Emília de Lima Tostes |
| author_facet | Thiago Mota Soares Ubiratan Holanda Bezerra Maria Emília de Lima Tostes |
| author_sort | Thiago Mota Soares |
| collection | DOAJ |
| description | This paper proposes the development of a three-phase state estimation algorithm, which ensures complete observability for the electric network and a low investment cost for application in typical electric power distribution systems, which usually exhibit low levels of supervision facilities and measurement redundancy. Using the customers´ energy bills to calculate average demands, a three-phase load flow algorithm is run to generate pseudo-measurements of voltage magnitudes, active and reactive power injections, as well as current injections which are used to ensure the electrical network is full-observable, even with measurements available at only one point, the substation-feeder coupling point. The estimation process begins with a load flow solution for the customers´ average demand and uses an adjustment mechanism to track the real-time operating state to calculate the pseudo-measurements successively. Besides estimating the real-time operation state the proposed methodology also generates nontechnical losses estimation for each operation state. The effectiveness of the state estimation procedure is demonstrated by simulation results obtained for the IEEE 13-bus test network and for a real urban feeder. |
| first_indexed | 2024-04-13T07:08:02Z |
| format | Article |
| id | doaj.art-ba29a5f4ec34496482e258e4ddcf38d3 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T07:08:02Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ba29a5f4ec34496482e258e4ddcf38d32022-12-22T02:56:56ZengMDPI AGEnergies1996-10732019-04-01127132710.3390/en12071327en12071327Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution GridsThiago Mota Soares0Ubiratan Holanda Bezerra1Maria Emília de Lima Tostes2Electrical Engineering Faculty, Institute of Technology, Federal University of Pará, Belém, PA 66075-110, BrazilElectrical Engineering Faculty, Institute of Technology, Federal University of Pará, Belém, PA 66075-110, BrazilElectrical Engineering Faculty, Institute of Technology, Federal University of Pará, Belém, PA 66075-110, BrazilThis paper proposes the development of a three-phase state estimation algorithm, which ensures complete observability for the electric network and a low investment cost for application in typical electric power distribution systems, which usually exhibit low levels of supervision facilities and measurement redundancy. Using the customers´ energy bills to calculate average demands, a three-phase load flow algorithm is run to generate pseudo-measurements of voltage magnitudes, active and reactive power injections, as well as current injections which are used to ensure the electrical network is full-observable, even with measurements available at only one point, the substation-feeder coupling point. The estimation process begins with a load flow solution for the customers´ average demand and uses an adjustment mechanism to track the real-time operating state to calculate the pseudo-measurements successively. Besides estimating the real-time operation state the proposed methodology also generates nontechnical losses estimation for each operation state. The effectiveness of the state estimation procedure is demonstrated by simulation results obtained for the IEEE 13-bus test network and for a real urban feeder.https://www.mdpi.com/1996-1073/12/7/1327full-observable networkpseudo-measurementsweighted least square |
| spellingShingle | Thiago Mota Soares Ubiratan Holanda Bezerra Maria Emília de Lima Tostes Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution Grids Energies full-observable network pseudo-measurements weighted least square |
| title | Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution Grids |
| title_full | Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution Grids |
| title_fullStr | Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution Grids |
| title_full_unstemmed | Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution Grids |
| title_short | Full-Observable Three-Phase State Estimation Algorithm Applied to Electric Distribution Grids |
| title_sort | full observable three phase state estimation algorithm applied to electric distribution grids |
| topic | full-observable network pseudo-measurements weighted least square |
| url | https://www.mdpi.com/1996-1073/12/7/1327 |
| work_keys_str_mv | AT thiagomotasoares fullobservablethreephasestateestimationalgorithmappliedtoelectricdistributiongrids AT ubiratanholandabezerra fullobservablethreephasestateestimationalgorithmappliedtoelectricdistributiongrids AT mariaemiliadelimatostes fullobservablethreephasestateestimationalgorithmappliedtoelectricdistributiongrids |