Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11223203 | System and method of predicting the presence of an out-of-step condition in a power system | Hengxu Ha, Shiming Fang | 2022-01-11 |
| 11081879 | Direct current distance protection controllers | Hengxu Ha | 2021-08-03 |
| 11073547 | Method of locating a fault in a power transmission scheme | Hengxu Ha, Gajendiran Balakrishnan | 2021-07-27 |
| 10884048 | Systems and methods for determining a time delay in electrical power systems | Hengxu Ha | 2021-01-05 |
| 10746779 | Fault location detection and distance protection apparatus and associated method | Hengxu Ha | 2020-08-18 |
| 10742016 | Circuit interruption apparatuses | Botong Li, Wentao Huang, Hengxu Ha | 2020-08-11 |
| 10734802 | Direct current distance protection schemes | Hengxu Ha | 2020-08-04 |
| 10727666 | Relating to direct current protection schemes | Hengxu Ha | 2020-07-28 |
| 10700508 | Protection apparatus | Hengxu Ha | 2020-06-30 |
| 10527659 | Apparatus for determination of the frequency of an electrical signal and associated methods | Hengxu Ha, Xianwu ZENG | 2020-01-07 |
| 9893873 | Electrical power networks | Hengxu Ha | 2018-02-13 |