The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2021
Filed:
May. 07, 2018
Nr Electric Co., Ltd, Nanjing, CN;
Nr Engineering Co., Ltd, Nanjing, CN;
Nannan Wang, Nanjing, CN;
Yu Lu, Nanjing, CN;
Yunlong Dong, Nanjing, CN;
Jie Tian, Nanjing, CN;
Dongming Cao, Nanjing, CN;
Haiying Li, Nanjing, CN;
Chongxue Jiang, Nanjing, CN;
Jiacheng Wang, Nanjing, CN;
NR ELECTRIC CO., LTD, Nanjing, CN;
NR ENGINEERING CO., LTD, Nanjing, CN;
Abstract
A DC voltage coordination control method is applied to a multi-terminal VSC-HVDC power transmission system or a VSC-HVDC power grid system. When a lower-level control is used in the active power control mode, the active power reference value of the converter is generated according to the converter DC voltage and the converter DC voltage active power curve; it also includes an upper-level control to adjust the control mode and active power setting value of the lower-level control to ensure the steady-state performance of the system. This method has low dependence on communication, avoids the problem that the fixed slope and margin cannot meet all operating conditions, and is suitable for large-scale VSC-HVDC systems, and has scalability.