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:
Mar. 05, 2019
Filed:
Jun. 30, 2017
State Grid Jiangsu Economic Research Institute, Nanjing, CN;
Hui Cai, Nanjing, CN;
Zhenjian Xie, Nanjing, CN;
Zheng Xu, Nanjing, CN;
Jian Yang, Nanjing, CN;
Wanchun Qi, Nanjing, CN;
Wenjia Zhang, Nanjing, CN;
Chen Li, Nanjing, CN;
Quanquan Wang, Nanjing, CN;
Chen Wu, Nanjing, CN;
STATE GRID JIANGSU ECONOMIC RESEARCH INSTITUTE, Nanjing, CN;
Abstract
A general load flow calculation method for power systems with unified power flow controller (UPFC). On the premise of satisfying the control objectives of UPFC, the calculation method combines the power injection model with the Newton-Raphson algorithm to solve the load flow of the power systems by iteration. It is applicable not only to a conventional UPFC structure, but also to a novel UPFC structure wherein the series and shunt transformers of a UPFC are connected to different AC buses or there are more than one series branch connected to a UPFC. The present invention provides the detailed process for performing a load flow evaluation, and it shows that it is unnecessary to add new state variables when solving the load flow by this method, the dimension of the Jacobian matrix will not increase during the iteration.