Abstract
The DC links might be coupled with AC power grids in the form of a large number of dispersive converters in the future flexible distribution network. It will be more applicable to establish a unified and simultaneous power flow model for accurate and effective solution of the system. A power flow calculation method for flexible distribution networks based on modified augmented nodal equations is proposed. Firstly, the network models of AC and DC power grids and the power flow constraints of nodes with different types are established. Secondly, the electronic equipment models of multiple modes including converters and soft open points as coupling links are considered. Finally, the modified augmented nodal equation of power flow calculation in the flexible distribution network is formed, and the Newton-Raphson method is used to solve the model. The effectiveness of proposed method is verified on the modified IEEE 123-bus flexible distribution network. The proposed method is appropriate for the time-series power flow calculation in multiple operation modes.
| Translated title of the contribution | Unified Power Flow Calculation Method of Flexible Interconnected Distribution Network Based on Modified Augmented Nodal Equation |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 22-31 |
| Number of pages | 10 |
| Journal | Dianli Xitong Zidonghua/Automation of Electric Power Systems |
| Volume | 45 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 25 Apr 2021 |
| Externally published | Yes |
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