Huanzhang LIU

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Direct-current transmission line protection method and system based...
- Patent number 11,973,340
- Issue date Apr 30, 2024
- China Electric Power Research Institute
- Zexin Zhou
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and device for starting direct-current (DC) transmission lin...
- Patent number 11,742,652
- Issue date Aug 29, 2023
- China Electric Power Research Institute
- Hong Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current differential protection method for self-adaptive half-wavel...
- Patent number 10,985,547
- Issue date Apr 20, 2021
- CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED
- Xuming Liang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of free wave energy protection for half-wavelength line base...
- Patent number 10,778,003
- Issue date Sep 15, 2020
- CHINA ELECTRIC POWER RESEARCH INST. CO. LIMITED
- Huanzhang Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Concomitant impedance protection method for half-wavelength transmi...
- Patent number 10,605,852
- Issue date Mar 31, 2020
- CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED
- Dingxiang Du
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
LINE DOUBLE-END STEADY-STATE QUANTITY DISTANCE MEASURING METHOD AND...
- Publication number 20220413031
- Publication date Dec 29, 2022
- STATE GRID CORPORATION OF CHINA
- Yarong GUO
- G01 - MEASURING TESTING
Information Patent Application
DIRECT-CURRENT TRANSMISSION LINE PROTECTION METHOD AND SYSTEM BASED...
- Publication number 20220285931
- Publication date Sep 8, 2022
- CHINA ELECTRIC POWER RESEARCH INSTITUTE
- Zexin ZHOU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND DEVICE FOR STARTING DIRECT-CURRENT (DC) TRANSMISSION LIN...
- Publication number 20220131367
- Publication date Apr 28, 2022
- CHINA ELECTRIC POWER RESEARCH INSTITUTE
- Hong CAO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD OF FREE WAVE ENERGY PROTECTION FOR HALF-WAVELENGTH LINE BASE...
- Publication number 20190013667
- Publication date Jan 10, 2019
- China Electric Power Research Institute Company Limited
- Huanzhang Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CURRENT DIFFERENTIAL PROTECTION METHOD FOR SELF-ADAPTIVE HALF-WAVEL...
- Publication number 20180375322
- Publication date Dec 27, 2018
- STATE GRID CORPORATION OF CHINA
- Xuming LIANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONCOMITANT IMPEDANCE PROTECTION METHOD FOR HALF-WAVELENGTH TRANSMI...
- Publication number 20180364292
- Publication date Dec 20, 2018
- China Electric Power Research Institute Company Limited
- Dingxiang Du
- G01 - MEASURING TESTING
Information Patent Application
Method For Overcoming Influence Of Out-Flowing Current On Bus Diffe...
- Publication number 20170317489
- Publication date Nov 2, 2017
- STATE GRID CORPORATION OF CHINA
- Dingxiang DU
- G01 - MEASURING TESTING

Huanzhang LIU

Person

Patents Grantslast 30 patents

Direct-current transmission line protection method and system based...

Method and device for starting direct-current (DC) transmission lin...

Current differential protection method for self-adaptive half-wavel...

Method of free wave energy protection for half-wavelength line base...

Concomitant impedance protection method for half-wavelength transmi...

Patents Applicationslast 30 patents

LINE DOUBLE-END STEADY-STATE QUANTITY DISTANCE MEASURING METHOD AND...

DIRECT-CURRENT TRANSMISSION LINE PROTECTION METHOD AND SYSTEM BASED...

METHOD AND DEVICE FOR STARTING DIRECT-CURRENT (DC) TRANSMISSION LIN...

METHOD OF FREE WAVE ENERGY PROTECTION FOR HALF-WAVELENGTH LINE BASE...

CURRENT DIFFERENTIAL PROTECTION METHOD FOR SELF-ADAPTIVE HALF-WAVEL...

CONCOMITANT IMPEDANCE PROTECTION METHOD FOR HALF-WAVELENGTH TRANSMI...

Method For Overcoming Influence Of Out-Flowing Current On Bus Diffe...