A Dynamic Nonlinear VDCOL Control Strategy Based on the Taylor Expansion of DC Voltages for Suppressing the Subsequent Commutation Failure in HVDC Transmission

Hongzheng Li, Kunlun Han (), Shuhao Liu, Hailin Chen, Xiongfeng Zhang and Kangtai Zou
Additional contact information
Hongzheng Li: Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 540000, China
Kunlun Han: Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 540000, China
Shuhao Liu: Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 540000, China
Hailin Chen: Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 540000, China
Xiongfeng Zhang: Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 540000, China
Kangtai Zou: Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 540000, China

Energies, 2023, vol. 16, issue 21, 1-21

Abstract: Subsequent commutation failure in high-voltage DC transmission systems seriously emphasizes the safe and stable operation of power systems. Via analyzing the mechanism of commutation failure and the principle of voltage-dependent current order limiter (VDCOL), this paper proposes a dynamic nonlinear VDCOL control strategy based on the Taylor expansion of DC voltage for suppressing subsequent commutation failure. To solve the problem of fluctuating DC current command value caused by a large drop in DC voltage, this paper constructs a nonlinear VDCOL control that can be dynamically adjusted according to the AC bus voltage level, and Taylor expansion of DC voltage is used to obtain its first-order and second-order differential components. Different scales of differential elements are chosen to predict the DC voltage compensation value while balancing sensitivity and accuracy. The compensated DC voltage, used as the starting voltage of VDCOL, is input to the VDCOL control constructed in this paper to suppress the subsequent commutation failure of the transmission system by reducing the fluctuation of the current command value. Finally, the standard test model of HVDC is established based on the actual parameters, and the simulation results show that the Method proposed in this paper has an effective suppressing effect in the case of single-phase or three-phase faults of different severity and is conducive to the restoration of the system power transmission.

Keywords: HVDC transmission; subsequent commutation failure; VDCOL; starting voltage optimization; Taylor expansion (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: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/21/7342/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/21/7342/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:21:p:7342-:d:1270591

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().