Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage Sensitivities
Recent advances in direct current (DC) distribution systems that involve renewable energy sources (RESs) and energy storage systems (ESSs) have shown that DC voltage control improves operational stability. This paper proposes an efficient real-time DC voltage control strategy that reduces total powe...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10024261/ |
| _version_ | 1797902259324977152 |
|---|---|
| author | Da-Young Shin Do-Hoon Kwon Seung-Ill Moon Yong-Tae Yoon |
| author_facet | Da-Young Shin Do-Hoon Kwon Seung-Ill Moon Yong-Tae Yoon |
| author_sort | Da-Young Shin |
| collection | DOAJ |
| description | Recent advances in direct current (DC) distribution systems that involve renewable energy sources (RESs) and energy storage systems (ESSs) have shown that DC voltage control improves operational stability. This paper proposes an efficient real-time DC voltage control strategy that reduces total power losses while maintaining the DC voltages within acceptable ranges via coordination of the grid-connected voltage source converter (GVSC) and the ESSs. A new strategy determines whether to invoke cooperative GVSC/ESS control or ESS voltage control alone. The GVSC and ESSs exhibit proportional-integral (PI) and variable droop controllers, respectively. In particular, the variable droop controllers are developed with consideration of the voltage sensitivities. The ESS outputs are then compensated by reference to the droop coefficients and the available ESS output powers. Case studies confirm that our voltage control strategy permits higher minimum DC voltages (and thus smaller total power losses) when consecutive events occur, compared with conventional strategies using PSCAD/EMTDC. |
| first_indexed | 2024-04-10T09:14:51Z |
| format | Article |
| id | doaj.art-f184b9934e514eabbfd06ebfcaf244ec |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-10T09:14:51Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-f184b9934e514eabbfd06ebfcaf244ec2023-02-21T00:03:12ZengIEEEIEEE Access2169-35362023-01-01118293830010.1109/ACCESS.2023.323887610024261Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage SensitivitiesDa-Young Shin0https://orcid.org/0000-0001-6048-1625Do-Hoon Kwon1https://orcid.org/0000-0002-6315-9882Seung-Ill Moon2Yong-Tae Yoon3Department of Electrical and Computer Engineering, Seoul National University, Seoul, South KoreaDepartment of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul, South KoreaInstitute for Grid Modernization, Korea Institute of Energy Technology (KENTECH), Naju, South KoreaDepartment of Electrical and Computer Engineering, Seoul National University, Seoul, South KoreaRecent advances in direct current (DC) distribution systems that involve renewable energy sources (RESs) and energy storage systems (ESSs) have shown that DC voltage control improves operational stability. This paper proposes an efficient real-time DC voltage control strategy that reduces total power losses while maintaining the DC voltages within acceptable ranges via coordination of the grid-connected voltage source converter (GVSC) and the ESSs. A new strategy determines whether to invoke cooperative GVSC/ESS control or ESS voltage control alone. The GVSC and ESSs exhibit proportional-integral (PI) and variable droop controllers, respectively. In particular, the variable droop controllers are developed with consideration of the voltage sensitivities. The ESS outputs are then compensated by reference to the droop coefficients and the available ESS output powers. Case studies confirm that our voltage control strategy permits higher minimum DC voltages (and thus smaller total power losses) when consecutive events occur, compared with conventional strategies using PSCAD/EMTDC.https://ieeexplore.ieee.org/document/10024261/DC distribution systemESSreal-time voltage controltotal grid lossvariable droop controlvoltage sensitivity |
| spellingShingle | Da-Young Shin Do-Hoon Kwon Seung-Ill Moon Yong-Tae Yoon Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage Sensitivities IEEE Access DC distribution system ESS real-time voltage control total grid loss variable droop control voltage sensitivity |
| title | Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage Sensitivities |
| title_full | Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage Sensitivities |
| title_fullStr | Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage Sensitivities |
| title_full_unstemmed | Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage Sensitivities |
| title_short | Real-Time Coordinated Control of a Grid-VSC and ESSs in a DC Distribution System for Total Power Loss Reduction Considering Variable Droop Using Voltage Sensitivities |
| title_sort | real time coordinated control of a grid vsc and esss in a dc distribution system for total power loss reduction considering variable droop using voltage sensitivities |
| topic | DC distribution system ESS real-time voltage control total grid loss variable droop control voltage sensitivity |
| url | https://ieeexplore.ieee.org/document/10024261/ |
| work_keys_str_mv | AT dayoungshin realtimecoordinatedcontrolofagridvscandesssinadcdistributionsystemfortotalpowerlossreductionconsideringvariabledroopusingvoltagesensitivities AT dohoonkwon realtimecoordinatedcontrolofagridvscandesssinadcdistributionsystemfortotalpowerlossreductionconsideringvariabledroopusingvoltagesensitivities AT seungillmoon realtimecoordinatedcontrolofagridvscandesssinadcdistributionsystemfortotalpowerlossreductionconsideringvariabledroopusingvoltagesensitivities AT yongtaeyoon realtimecoordinatedcontrolofagridvscandesssinadcdistributionsystemfortotalpowerlossreductionconsideringvariabledroopusingvoltagesensitivities |