AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power Systems
Against the background of 'Emission Peak, Carbon Neutrality', there is a significant integration of new energy into the power grid. The characteristics of ‘double high’ and ‘double peak’ in power systems become more pronounced, posing a substantial challenge to the stability and energy c...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Stefan cel Mare University of Suceava
2024-02-01
|
| Series: | Advances in Electrical and Computer Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.4316/AECE.2024.01009 |
| _version_ | 1797281027076390912 |
|---|---|
| author | KONG, Y. WANG, Y. Li, Y. ZHAO, Z. GUO, Y. ZHONG, J. |
| author_facet | KONG, Y. WANG, Y. Li, Y. ZHAO, Z. GUO, Y. ZHONG, J. |
| author_sort | KONG, Y. |
| collection | DOAJ |
| description | Against the background of 'Emission Peak, Carbon Neutrality', there is a significant integration of new energy
into the power grid. The characteristics of ‘double high’ and ‘double peak’ in power systems become more
pronounced, posing a substantial challenge to the stability and energy coordination of the power grid.
To address this, we propose a flexible interconnection scheme based on an AC-DC bidirectional converter.
It can solve the problem of high-load caused by new energy generation. Firstly, high-load and adjacent
substations are flexibly interconnected through the DC bus on the low-voltage side, enabling load
management within a small range. Secondly, AC-DC power transfers the excess new energy generation
to other substations. It can promote the absorption of new energy. This method can improve the
utilization efficiency of distribution transformers, realize capacity sharing between different
transformers, and improve the reliability of power systems in low-voltage distribution networks.
Finally, based on a DC interconnection project in Shandong Province (China), the effectiveness
of the proposed flexible interconnection scheme is verified. The new energy consumption increases
from 5% to 24.4%, and the load rate of high-load transforms drops below 70%. |
| first_indexed | 2024-03-07T16:49:41Z |
| format | Article |
| id | doaj.art-ee32b3bd887d42d58fe92731faa6779e |
| institution | Directory Open Access Journal |
| issn | 1582-7445 1844-7600 |
| language | English |
| last_indexed | 2024-03-07T16:49:41Z |
| publishDate | 2024-02-01 |
| publisher | Stefan cel Mare University of Suceava |
| record_format | Article |
| series | Advances in Electrical and Computer Engineering |
| spelling | doaj.art-ee32b3bd887d42d58fe92731faa6779e2024-03-03T05:56:19ZengStefan cel Mare University of SuceavaAdvances in Electrical and Computer Engineering1582-74451844-76002024-02-01241819010.4316/AECE.2024.01009AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power SystemsKONG, Y.WANG, Y.Li, Y.ZHAO, Z.GUO, Y.ZHONG, J.Against the background of 'Emission Peak, Carbon Neutrality', there is a significant integration of new energy into the power grid. The characteristics of ‘double high’ and ‘double peak’ in power systems become more pronounced, posing a substantial challenge to the stability and energy coordination of the power grid. To address this, we propose a flexible interconnection scheme based on an AC-DC bidirectional converter. It can solve the problem of high-load caused by new energy generation. Firstly, high-load and adjacent substations are flexibly interconnected through the DC bus on the low-voltage side, enabling load management within a small range. Secondly, AC-DC power transfers the excess new energy generation to other substations. It can promote the absorption of new energy. This method can improve the utilization efficiency of distribution transformers, realize capacity sharing between different transformers, and improve the reliability of power systems in low-voltage distribution networks. Finally, based on a DC interconnection project in Shandong Province (China), the effectiveness of the proposed flexible interconnection scheme is verified. The new energy consumption increases from 5% to 24.4%, and the load rate of high-load transforms drops below 70%.http://dx.doi.org/10.4316/AECE.2024.01009ac-dc power converterload managementpower system interconnectionpower system reliabilitytransforms |
| spellingShingle | KONG, Y. WANG, Y. Li, Y. ZHAO, Z. GUO, Y. ZHONG, J. AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power Systems Advances in Electrical and Computer Engineering ac-dc power converter load management power system interconnection power system reliability transforms |
| title | AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power Systems |
| title_full | AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power Systems |
| title_fullStr | AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power Systems |
| title_full_unstemmed | AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power Systems |
| title_short | AC-DC Bidirectional Converter-based Flexible Interconnection for Low Voltage Side in Power Systems |
| title_sort | ac dc bidirectional converter based flexible interconnection for low voltage side in power systems |
| topic | ac-dc power converter load management power system interconnection power system reliability transforms |
| url | http://dx.doi.org/10.4316/AECE.2024.01009 |
| work_keys_str_mv | AT kongy acdcbidirectionalconverterbasedflexibleinterconnectionforlowvoltagesideinpowersystems AT wangy acdcbidirectionalconverterbasedflexibleinterconnectionforlowvoltagesideinpowersystems AT liy acdcbidirectionalconverterbasedflexibleinterconnectionforlowvoltagesideinpowersystems AT zhaoz acdcbidirectionalconverterbasedflexibleinterconnectionforlowvoltagesideinpowersystems AT guoy acdcbidirectionalconverterbasedflexibleinterconnectionforlowvoltagesideinpowersystems AT zhongj acdcbidirectionalconverterbasedflexibleinterconnectionforlowvoltagesideinpowersystems |