Research on Economic Operation Strategy of AC / DC Hybrid Distribution Network Based on Power Electronic Transformer

2021 ◽  
Author(s):  
Yi Wenfei ◽  
Yuan Yubo ◽  
Bu Qiangsheng
Keyword(s):  
Distribution Network ◽  
Power Electronic ◽  
Operation Strategy ◽  
Electronic Transformer ◽  
Power Electronic Transformer ◽  
Economic Operation ◽  
Hybrid Distribution

scholarly journals Optimal Scheduling Strategy of AC/DC Hybrid Distribution Network Based on Power Electronic Transformer

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3219
Author(s):  
Qingwen Peng ◽  
Lu Qu ◽  
Zhichang Yuan ◽  
Xiaorui Wang ◽  
Yukun Chen ◽  
...  
Keyword(s):  
Control Structure ◽  
Low Voltage ◽  
Distribution Network ◽  
Optimal Scheduling ◽  
Power Electronic ◽  
Scheduling Strategy ◽  
Electronic Transformer ◽  
Power Electronic Transformer ◽  
Dc Bus ◽  
Hybrid Distribution

The AC/DC hybrid distribution network is composed of a medium-voltage DC bus, a low-voltage DC bus, and a power electronic transformer, and has the characteristics of multi-voltage level, multi-DC bus, and multi-converter, so its operation mode and optimal scheduling strategy are more complex. Firstly, this paper constructs the AC/DC hybrid distribution network using an power electronic transformer. Then, a two-layer control structure including a scheduling management layer and a bus control layer is proposed, which simplifies the control structure and gives full play to the role of “energy routing” function of the power electronic transformer. Moreover, the minimum operation cost of the AC/DC hybrid distribution network in the whole scheduling cycle is taken as the optimization objective, considering the characteristics of various distributed generations, the structure of AC/DC hybrid distribution network, and the interaction of “source–load–storage”. Finally, the optimal scheduling model of the AC/DC hybrid distribution network based on power electronic transformer is established, and the feasibility of the optimal scheduling strategy is verified by the open-source solver, which can realize the complete absorption of renewable energy and the optimal coordinated control of “source–load–storage”.

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