Rapid Prediction Method for Commutation Failure in HVDC Systems

ChangeBridge: Patent Apps - Power Supply (H02J)

Detected March 26th, 2026

Summary

The USPTO has published a patent application (US20260086151A1) for a rapid prediction method and system for commutation failure in high voltage direct current (HVDC) transmission systems. The invention, assigned to Shandong University, aims to improve prediction speed by integrating conventional and advanced commutation area information.

View original document View source feed page

What changed

This document is a publication of a patent application filed by Shandong University with the USPTO. The application, US20260086151A1, describes a method and system for rapidly predicting commutation failure in high voltage direct current (HVDC) transmission systems. The invention utilizes a commutation failure risk factor, calculated by integrating conventional and advanced commutation areas, to improve prediction speed by considering both present and future information of characteristic quantities.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on entities. However, it represents a new technological development in the field of power systems engineering. Companies involved in HVDC transmission technology, particularly those focused on LCC-HVDC systems, may find this patent relevant for potential licensing or as a basis for further research and development in commutation failure prevention and prediction.

Source document (simplified)

← USPTO Patent Applications

RAPID PREDICTION METHOD AND SYSTEM FOR COMMUTATION FAILURE IN HVDC BASED ON COMMUTATION FAILURE RISK FACTOR

Application US20260086151A1 Kind: A1 Mar 26, 2026

Assignee

SHANDONG UNIVERSITY

Inventors

Zhijie Liu, Kejun Li, Miao Guo, Zhonglin Guo, Baihe Su, Canyu Cui, Yuanyuan Sun, Kaiqi Sun, Shuang Li

Abstract

Disclosed are a rapid prediction method and system for a commutation failure in a high voltage direct current transmission system (HVDC) based on a commutation failure risk factor, belonging to the technical field of commutation failure prevention in the high voltage direct current transmission system. The method can rapidly predict whether the commutation failure occurs after a fault occurs in a line-commutated converter-HVDC (LCC-HVDC) system, thereby supporting the subsequent prevention of the commutation failure. During the implementation, the method defines a conventional commutation area and an advanced commutation area, and calculates a commutation failure risk factor by integrating the conventional commutation area and the advanced commutation area, thereby predicting the commutation failure. In the method, the present-instant information and the future-instant information of characteristic quantities are comprehensively considered during a prediction process, thereby improving the commutation failure prediction speed.