Method and device for determining parameter of passive impedance adapter applicable to VSC-HVDC

US12278488B2 · kind B2 · utility

Assignee

• ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID · CN

Inventors

• Changyue Zou · Longbeilingcun, CN
• Hong Rao · 流花街道, CN
• Xiaobin ZHAO · Longbeilingcun, CN
• Shukai Xu · Longbeilingcun, CN
• Yan Li · Fairfax, US
• Jun CHEN · Beijing, CN
• Qingming Xin · Longbeilingcun, CN
• Weiwei Li · Langfang, CN
• Shuangfei Yang · Longbeilingcun, CN
• Junjie Feng · Campbell, US

Key dates

• Filing date: Aug 27, 2021
• Grant date: Apr 15, 2025
• Expiry date: Dec 30, 2043

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/60
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Method for determining parameter of a passive impedance adapter applicable to VSC-HVDC, including: S1. obtaining VSC-HVDC impedance and VSC-HVDC impedance curve X(f) based on VSC-HVDC impedance; S2. estimating upper limit value of the main capacitor in the passive impedance adapter; S3. calculating adapter parameter curve Xadapter(f); S4. determining value of the main capacitor and varying value of the main resistor until min[X(f)−Xadapter(f)] is maximized; determining whether min[X(f)−Xadapter(f)]>k holds; S5. If min[X(f)−Xadapter(f)]>k does not hold, increasing the value of the main capacitor and performing steps S2-S4 until min[X(f)−Xadapter(f)]>k holds when the value of the main capacitor is within the range of the value of the main capacitor, storing the parameters in an available parameter set; S6. reducing the value of the main capacitor, and storing the parameters when min[X(f)−Xadapter(f)]>k holds in the available parameter set; S7. selecting the available parameters from the available parameter set.