Xu Li

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Xuchang, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for preventing differential protection maloperation of optic...
- Patent number 10,622,804
- Issue date Apr 14, 2020
- XJ GROUP CORPORATION
- Baowei Li
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Prevention method of abnormal action protection of UHV regulating c...
- Patent number 10,090,670
- Issue date Oct 2, 2018
- XJ Group Corporation
- Jirui Chen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Sampling implementation method and device based on conventional sam...
- Patent number 9,985,428
- Issue date May 29, 2018
- XJ Group Corporation
- Jirui Chen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PREVENTING DIFFERENTIAL PROTECTION MALOPERATION OF OPTIC...
- Publication number 20170163024
- Publication date Jun 8, 2017
- XJ GROUP CORPORATION
- Baowei Li
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SAMPLING IMPLEMENTATION METHOD AND DEVICE BASED ON CONVENTIONAL SAM...
- Publication number 20170070336
- Publication date Mar 9, 2017
- XJ GROUP CORPORATION
- Jirui Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PREVENTION METHOD OF ABNORMAL ACTION PROTECTION OF UHV REGULATING C...
- Publication number 20170018919
- Publication date Jan 19, 2017
- XJ GROUP CORPROATION
- Jirui Chen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Frequency Measuring Method and Measuring Device For Electricity System
- Publication number 20160320437
- Publication date Nov 3, 2016
- XJ GROUP CORPORATION
- Li Wang
- G01 - MEASURING TESTING