DC Active Damper Control Strategy Based on Resonance Suppression Effectiveness Evaluation Method

Huaying Zhang, Yingxin Wang, Xinyi Zhu, Yonghai Xu and Shun Tao ()
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Huaying Zhang: New Smart City High-Quality Power Supply Joint Laboratory of China Southern Power Grid, Shenzhen Power Supply Co., Ltd., Shenzhen 518020, China
Yingxin Wang: School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
Xinyi Zhu: School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
Yonghai Xu: School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
Shun Tao: School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China

Energies, 2024, vol. 17, issue 2, 1-17

Abstract: With the complication of the power system, features of the resonance interaction behave diversely and pose a threat to the effectiveness of the resonance suppression strategies. Existing resonance suppression strategies are usually designed for specific scenarios which are in close correlation with the impedance frequency-amplitude distribution, and their adaptability under different scenarios is hard to evaluate. In this paper, the resonance suppression domain of a DC distribution network is derived based on the node impedance variation before/after the resonance is suppressed. The derived criterion takes the admittance change of the resonance suppression strategies as variables, and the conservative/ideal suppression domain criteria are defined. On this basis, a method for evaluating the effectiveness of resonance suppression strategies is proposed, which simplifies the evaluation process and avoids a complicated matrix inverse process to each resonance suppression strategy during the system impedance calculation. Furthermore, a DC active damper control strategy based on the resonance suppression strategy evaluation is proposed, and the proposed strategy could suppress resonances under different scenarios by a targeted design of the reshaping admittance parameters. Time domain simulations with a 5-node distribution network are carried out to verify the proposed method.

Keywords: DC distribution network; resonance suppression effectiveness evaluation; node impedance; active damper; control parameter design (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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