An evaluation method of distributed generation credible capacity based on island partition
Distributed generation (DG) has not only electricity value, but also capacity value. The capacity value can be represented by the credible capacity (CC) based on the equal power supply reliability criterion. The evaluation of reliability on distribution network (DN) is the core of CC calculation. Un...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S235248472201695X |
| _version_ | 1797901849133580288 |
|---|---|
| author | Jiahao Chen Bing Sun Yunfei Li Ruipeng Jing Yuan Zeng Minghao Li |
| author_facet | Jiahao Chen Bing Sun Yunfei Li Ruipeng Jing Yuan Zeng Minghao Li |
| author_sort | Jiahao Chen |
| collection | DOAJ |
| description | Distributed generation (DG) has not only electricity value, but also capacity value. The capacity value can be represented by the credible capacity (CC) based on the equal power supply reliability criterion. The evaluation of reliability on distribution network (DN) is the core of CC calculation. Under a fault state, DGs can continue to supply power to some load by the island operating mode, and the DN reliability can be improved. Therefore, it is necessary to utilize the power supply restoration potential of DG and formulate an island partition scheme accurately in the reliability calculation of DN. A DG CC evaluation method based on island partition is proposed in the paper. The power supply reliability of an active distribution network is evaluated based on an island partition model, to realize the accurate evaluation of DG CC. The main work is as follows: First, an island partition model under a random fault state of DN is established. The fluctuation of DGs and load, interconnection switch, load priority, secondary outage constraint and other factors are fully considered in reliability assessment. A heuristic prospective greedy algorithm and the Prim algorithm are used to solve the island partition model accurately. Second, a reliability evaluation method of DN based on sequential Monte Carlo simulation (SMCS) is proposed. The system reliability level can be accurately analyzed under a fault state. Then, a CC evaluation method based on hypothesis testing is proposed. The convergence of the CC searching process can be scientifically judged by checking the conspicuousness of the reliability indices distribution obtained by the SMCS. Finally, a case study of the PG&E 69-bus system is analyzed. The topology of the DN, permeability of the DG and island partition strategy are known to have a significant impact on the DG CC. |
| first_indexed | 2024-04-10T09:08:26Z |
| format | Article |
| id | doaj.art-13e17fc737a846da88af0422738b750c |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:08:26Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-13e17fc737a846da88af0422738b750c2023-02-21T05:13:07ZengElsevierEnergy Reports2352-48472022-11-0181127111287An evaluation method of distributed generation credible capacity based on island partitionJiahao Chen0Bing Sun1Yunfei Li2Ruipeng Jing3Yuan Zeng4Minghao Li5Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, ChinaKey Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, China; Corresponding author.Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, ChinaKey Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, ChinaKey Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, ChinaState Grid Tianjin Electric Power Co., Ltd., Tianjin, ChinaDistributed generation (DG) has not only electricity value, but also capacity value. The capacity value can be represented by the credible capacity (CC) based on the equal power supply reliability criterion. The evaluation of reliability on distribution network (DN) is the core of CC calculation. Under a fault state, DGs can continue to supply power to some load by the island operating mode, and the DN reliability can be improved. Therefore, it is necessary to utilize the power supply restoration potential of DG and formulate an island partition scheme accurately in the reliability calculation of DN. A DG CC evaluation method based on island partition is proposed in the paper. The power supply reliability of an active distribution network is evaluated based on an island partition model, to realize the accurate evaluation of DG CC. The main work is as follows: First, an island partition model under a random fault state of DN is established. The fluctuation of DGs and load, interconnection switch, load priority, secondary outage constraint and other factors are fully considered in reliability assessment. A heuristic prospective greedy algorithm and the Prim algorithm are used to solve the island partition model accurately. Second, a reliability evaluation method of DN based on sequential Monte Carlo simulation (SMCS) is proposed. The system reliability level can be accurately analyzed under a fault state. Then, a CC evaluation method based on hypothesis testing is proposed. The convergence of the CC searching process can be scientifically judged by checking the conspicuousness of the reliability indices distribution obtained by the SMCS. Finally, a case study of the PG&E 69-bus system is analyzed. The topology of the DN, permeability of the DG and island partition strategy are known to have a significant impact on the DG CC.http://www.sciencedirect.com/science/article/pii/S235248472201695XIsland partition modelDistributed generation credible capacityHypothesis testEqual power supply reliability criterionSequential Monte Carlo simulationProspective greedy algorithm |
| spellingShingle | Jiahao Chen Bing Sun Yunfei Li Ruipeng Jing Yuan Zeng Minghao Li An evaluation method of distributed generation credible capacity based on island partition Energy Reports Island partition model Distributed generation credible capacity Hypothesis test Equal power supply reliability criterion Sequential Monte Carlo simulation Prospective greedy algorithm |
| title | An evaluation method of distributed generation credible capacity based on island partition |
| title_full | An evaluation method of distributed generation credible capacity based on island partition |
| title_fullStr | An evaluation method of distributed generation credible capacity based on island partition |
| title_full_unstemmed | An evaluation method of distributed generation credible capacity based on island partition |
| title_short | An evaluation method of distributed generation credible capacity based on island partition |
| title_sort | evaluation method of distributed generation credible capacity based on island partition |
| topic | Island partition model Distributed generation credible capacity Hypothesis test Equal power supply reliability criterion Sequential Monte Carlo simulation Prospective greedy algorithm |
| url | http://www.sciencedirect.com/science/article/pii/S235248472201695X |
| work_keys_str_mv | AT jiahaochen anevaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT bingsun anevaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT yunfeili anevaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT ruipengjing anevaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT yuanzeng anevaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT minghaoli anevaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT jiahaochen evaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT bingsun evaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT yunfeili evaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT ruipengjing evaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT yuanzeng evaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition AT minghaoli evaluationmethodofdistributedgenerationcrediblecapacitybasedonislandpartition |