| Author Name | Affiliation | Postcode | | Congshan Li* | 1. School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China | 450002 | | Jian Guo | 1. School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China | 450002 | | Ping He | 1. School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China | 450002 | | Yukun Tao | 1. School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China | 450002 | | Cunxiang Yang | 1. School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China | 450002 | | Youyi Wang | 2. School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore | 450002 |
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| Abstract: |
| HVDC auxiliary power control can significantly improve the transient stability of AC/DC power grid. An HVDC adaptive emergency power support method based on unbalanced power on-line estimation is proposed in this paper. By establishing the extended state equation of the system, the on-line dynamic estimation of unbalanced power of the system was realized. On this basis, power support was realized based on the principle of the ladder increment. The optimal DC was selected by the power support factor, and the emergency power support controller was installed on the DC. This emergency power support method can realize dynamic optimal power support with minimized control cost. The three-infeed HVDC system was built on PSCAD. The simulation results show the effectiveness of the proposed method. |
| Key words: emergency power support unbalanced power extended state observer ladder-increasing principle multi-infeed HVDC system |
| DOI：10.11916/j.issn.1005-9113.18118 |
| Clc Number:51607158，51507157，161100211600 |
| Fund: |
