Evaluation of System Operational Flexibility of High Proportion Wind Power System Based on the Typical Scene Set
[1]WANG Jinfeng,ZHANG Huihui,ZHU Fangyuan.Evaluation of System Operational Flexibility of High Proportion Wind Power System Based on the Typical Scene Set[J].Journal of Zhengzhou University (Engineering Science),2021,42(06):95-100.[doi:10.13705/j.issn.1671-6833.2021.06.001]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
42
Number of periods:
2021 06
Page number:
95-100
Column:
Public date:
2021-11-10
- Title:
- Evaluation of System Operational Flexibility of High Proportion Wind Power System Based on the Typical Scene Set
- Keywords:
- high proportion of wind power system; typical scene set; flexibility index; economic dispatching; flexible resources
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2021.06.001
- Abstract:
- In a high proportion wind power system, the evaluation of system flexibility is the basis of flexible resource allocation and planning. In order to take into account the temporal and periodic characteristics of data, the typical scene set of the system was obtained after clustering reduction and fusion of wind power and load. Then, the flexibility demand, flexibility supply and flexibility index of the system were modeled. Then, the economic scheduling model with flexibility constraints is solved by traversing the typical scenarios. According to the scheduling results, the probability and expectation of insufficient flexibility of each typical scenario are calculated. Finally, the flexibility index of the system was calculated according to the probability of typical scenarios, and the flexibility of the system was evaluated to guide the allocation of flexibility resources. Through the example analysis, it was found that in the high-proportion wind power system, the downward flexibility resource was only the thermal power unit in operation, and the downward flexibility index did not meet the threshold requirement. A certain downward flexibility resource should be configured in the system, otherwise, a large number of wind abandon would occur.
- References:
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Last Update:
2021-12-17