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name:-0.075198888778687
name:-0.071162939071655
name:-0.064681053161621
NR ENGINEERING CO., LTD. Patent Filings

NR ENGINEERING CO., LTD.

Patent Applications and Registrations

Patent applications and USPTO patent grants for NR ENGINEERING CO., LTD..The latest application filed is for "valve tower reinforcing structure and reinforcing method".

Company Profile
66.115.63
  • NR ENGINEERING CO., LTD. - Jiangsu N/A CN
  • NR ENGINEERING CO., LTD - Jiangsu N/A CN
  • NR ENGINEERING CO., LTD - Nanjing CN
  • NR ENGINEERING CO., LTD - N/A
  • NR ENGINEERING CO., LTD. - Nanjing, Jiangsu CN
  • NR ENGINEERING CO., LTD. - Nanjing CN
  • NR ENGINEERING CO., LTD - NANJING, JIANGSU CN
  • NR Engineering Co., Ltd - Jiangning Nanjing, Jiangsu CN
  • NR Engineering Co., Ltd. - Jiangning, Nanjing N/A CN
  • NR Engineering Co., Ltd. - No. 69 Suyuan Avenue, Jiangning Nanjing CN
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Method for detecting open phase of startup/standby transformer based on optical CT
Grant 11,422,204 - Chen , et al. August 23, 2
2022-08-23
Converter control method and device
Grant 11,374,411 - Wang , et al. June 28, 2
2022-06-28
Control system and control method for parallel converter system
Grant 11,355,932 - Wang , et al. June 7, 2
2022-06-07
Multi-voltage level direct current grid system and control protection method
Grant 11,342,744 - Xie , et al. May 24, 2
2022-05-24
Method for initiating flexible DC transmission system under isolated island condition
Grant 11,329,486 - Wang , et al. May 10, 2
2022-05-10
Voltage and current control method and device for direct-current power transmission system
Grant 11,289,905 - Lu , et al. March 29, 2
2022-03-29
Method and device for quickly eliminating ferromagnetic resonance of voltage transformer
Grant 11,264,793 - Wang , et al. March 1, 2
2022-03-01
Redundant energy acquisition circuit of power module, and control method thereof
Grant 11,264,891 - Xie , et al. March 1, 2
2022-03-01
Series compensator and control method
Grant 11,264,794 - Pan , et al. March 1, 2
2022-03-01
Valve Tower Reinforcing Structure And Reinforcing Method
App 20220010576 - YU; Haibo ;   et al.
2022-01-13
Bipolar bidirectional DC converter, and control method and control device therefor
Grant 11,223,291 - Xie , et al. January 11, 2
2022-01-11
Direct current voltage coordination control method
Grant 11,190,020 - Wang , et al. November 30, 2
2021-11-30
Coordinated control method and device for series voltage source converter valve group
Grant 11,146,071 - Lu , et al. October 12, 2
2021-10-12
Multi-voltage Level Direct Current Grid System And Control Protection Method
App 20210265835 - XIE; YEYUAN ;   et al.
2021-08-26
Bipolar Bidirectional Dc Converter, And Control Method And Control Device Therefor
App 20210242792 - XIE; Chen ;   et al.
2021-08-05
Unidirectional Dc Voltage Conversion Device And System And Method For Controlling Same
App 20210242787 - XIE; Yeyuan ;   et al.
2021-08-05
Converter Control Method And Device
App 20210222673 - Wang; Jiacheng ;   et al.
2021-07-22
Compensator, Control Method and Device Therefor
App 20210226449 - Dong; Yunlong ;   et al.
2021-07-22
Adaptive protection method for impedance of parallel capacitors
Grant 11,063,424 - Song , et al. July 13, 2
2021-07-13
Longitudinal Differential Protection Method Of Transformer
App 20210203147 - Gu; Qiaogen ;   et al.
2021-07-01
Bypass Thyristor Valve Group Inspection Method And Control Apparatus
App 20210165034 - LU; Dongbin ;   et al.
2021-06-03
Thyristor valve test system based on cooperation of logical functions of software
Grant 11,009,542 - Yang , et al. May 18, 2
2021-05-18
Coordinated Control Method And Device For Series Voltage Source Converter Valve Group
App 20210126462 - LU; Jiang ;   et al.
2021-04-29
Method and apparatus for suppressing impact of compensator on line distance protection
Grant 10,965,114 - Pan , et al. March 30, 2
2021-03-30
Development of embedded type devices and running method for embedded type virtual device and system
Grant 10,949,242 - Chen , et al. March 16, 2
2021-03-16
Closing control method for high-voltage direct-current circuit breaker
Grant 10,944,254 - Shi , et al. March 9, 2
2021-03-09
Fault switch configuration and clearing method in flexible DC converter station
Grant 10,923,906 - Lu , et al. February 16, 2
2021-02-16
Redundant Energy Acquisition Circuit Of Power Module, And Control Method Thereof
App 20210036600 - XIE; Yeyuan ;   et al.
2021-02-04
Converter valve fault warning method and system
Grant 10,877,082 - Gao , et al. December 29, 2
2020-12-29
Method For Detecting Open Phase Of Startup/standby Transformer Based On Optical Ct
App 20200363479 - Chen; Jiasheng ;   et al.
2020-11-19
Direct Current Voltage Coordination Control Method
App 20200366096 - WANG; Nannan ;   et al.
2020-11-19
Direct current power grid voltage control method
Grant 10,840,702 - Ding , et al. November 17, 2
2020-11-17
On-line input control method, on-line input and quit device for voltage-source converter unit
Grant 10,797,487 - Lu , et al. October 6, 2
2020-10-06
Series Compensator And Control Method
App 20200295561 - PAN; Lei ;   et al.
2020-09-17
Voltage And Current Control Method And Device For Direct-current Power Transmission System
App 20200295563 - LU; Jiang ;   et al.
2020-09-17
Method And Device For Quickly Eliminating Ferromagnetic Resonance Of Voltage Transformer
App 20200287379 - WANG; Honglin ;   et al.
2020-09-10
Charging method for sub-module based hybrid converter
Grant 10,763,761 - Ding , et al. Sep
2020-09-01
Fault Switch Configuration And Clearing Method In Flexible Dc Converter Station
App 20200220349A1 -
2020-07-09
Chained Multi-port Grid-connected Interface Apparatus And Control Method
App 20200220355A1 -
2020-07-09
Control System And Control Method For Parallel Converter System
App 20200212674A1 -
2020-07-02
Method and apparatus for controlling hybrid direct-current transmission system
Grant 10,700,525 - Zhao , et al.
2020-06-30
Method For Initiating Flexible Dc Transmission System Under Isolated Island Condition
App 20200195013A1 -
2020-06-18
Method And Apparatus For Suppressing Impact Of Compensator On Line Distance Protection
App 20200185901A1 -
2020-06-11
Assembly method for DC converter valve
Grant 10,632,578 - Zhang , et al.
2020-04-28
Apparatus and method for ensuring reliability of trip protection of intelligent substation
Grant 10,637,287 - Xu , et al.
2020-04-28
Housing structure of planar resistor
Grant 10,636,548 - Zhang , et al.
2020-04-28
Charging Method For Sub-module Based Hybrid Converter
App 20200076321 - DING; Jiudong ;   et al.
2020-03-05
An Adaptive Protection Method For Impedance Of Parallel Capacitors
App 20200021104 - SONG; Zhongpeng ;   et al.
2020-01-16
Reactive power overexcitation regulation technology for synchronous generator
Grant 10,535,997 - Wu , et al. Ja
2020-01-14
Thyristor Valve Test System Based On Cooperation Of Logical Functions Of Software
App 20200011923 - YANG; Fan ;   et al.
2020-01-09
Reconfigurable MMC sub-module unit and control unit thereof
Grant 10,523,131 - Li , et al. Dec
2019-12-31
Charging method for sub-module based hybrid converter
Grant 10,483,788 - Ding , et al. Nov
2019-11-19
Method and system for fault positioning and recovery of voltage source converter
Grant 10,476,261 - Li , et al. Nov
2019-11-12
Direct Current Power Grid Voltage Control Method
App 20190341777 - DING; Jiudong ;   et al.
2019-11-07
Novel Reactive Power Overexcitation Regulation Technology For Synchronous Generator
App 20190334348 - WU; Long ;   et al.
2019-10-31
Fault current limiting control and protection coordination method for converter of flexible direct current power transmission system operating in islanding state
Grant 10,461,525 - Hu , et al. Oc
2019-10-29
Starting method and stopping method for a static synchronous series compensator
Grant 10,461,534 - Pan , et al. Oc
2019-10-29
Charging Method For Sub-module Based Hybrid Converter
App 20190326770 - DING; Jiudong ;   et al.
2019-10-24
Bridge-type circuit, and direct current breaking device and control method thereof
Grant 10,454,265 - Cao , et al. Oc
2019-10-22
Running Method For Embedded Type Virtual Device And System
App 20190317791 - CHEN; Hongjun ;   et al.
2019-10-17
Passive islanding-to-grid-connected switch method
Grant 10,418,816 - Dong , et al. Sept
2019-09-17
Direct current switch-off device and control method thereof
Grant 10,418,803 - Cao , et al. Sept
2019-09-17
Coordination control method of multi-terminal VSC-HVDC transmission system
Grant 10,396,561 - Dong , et al. A
2019-08-27
Series compensation device applicable to double-circuit line
Grant 10,396,562 - Huang , et al. A
2019-08-27
Fault Current Limiting Control And Protection Coordination Method For Converter Of Flexible Direct Current Power Transmission Sy
App 20190260201 - HU; Zhaoqing ;   et al.
2019-08-22
Housing Structure of Planar Resistor
App 20190259513 - Zhang; Xiang ;   et al.
2019-08-22
On-Line Input and Quit Control Method and Device for Voltage-Source Converter Unit
App 20190252885 - Lu; Jiang ;   et al.
2019-08-15
Resistor, a heat dissipater and a combinatory device of resistor and heat dissipater
Grant 10,381,138 - Fang , et al. A
2019-08-13
Apparatus And Method For Ensuring Reliability Of Protection Trip Of Intelligent Substation
App 20190190315 - XU; Zongguang ;   et al.
2019-06-20
Closing Control Method For High-Voltage Direct-Current Circuit Breaker
App 20190190258 - SHI; Wei ;   et al.
2019-06-20
Method for controlling zero sequence voltage of voltage source converter
Grant 10,326,275 - Wang , et al.
2019-06-18
Reconfigurable Mmc Sub-module Unit And Control Unit Thereof
App 20190173392 - LI; Gang ;   et al.
2019-06-06
Series Compensation Device Applicable To Double-Circuit Line
App 20190157871 - HUANG; Ruhai ;   et al.
2019-05-23
Method And System For Fault Positioning And Recovery Of Voltage Source Converter
App 20190140441 - LI; Gang ;   et al.
2019-05-09
Method for incorporating non-operating station into operating system in multi-terminal flexible DC transmission system
Grant 10,283,965 - Dong , et al.
2019-05-07
Locomotive regenerative electric energy feedback system with ice melting function and control method
Grant 10,279,686 - Yang , et al.
2019-05-07
Overload current limiting method for voltage source converter
Grant 10,270,332 - Hu , et al.
2019-04-23
Method and apparatus for identifying open phase of circuit breaker on basis of voltage
Grant 10,267,859 - Chen , et al.
2019-04-23
Method For Controlling Zero Sequence Voltage Of Voltage Source Converter
App 20190109459 - WANG; Ke ;   et al.
2019-04-11
Bridge-type Circuit, And Direct Current Breaking Device And Control Method Thereof
App 20190097411 - CAO; Dongming ;   et al.
2019-03-28
Shell structure for thyristor trigger unit
Grant 10,237,986 - Chen , et al.
2019-03-19
Overload Current Limiting Method For Voltage Source Converter
App 20190081551 - HU; Zhaoqing ;   et al.
2019-03-14
Locomotive Regenerative Electric Energy Feedback System With Ice Melting Function And Control Method
App 20190070964 - YANG; Hao ;   et al.
2019-03-07
Drive signal modulation method of modular multilevel converter and fault isolation method
Grant 10,224,833 - Xie , et al.
2019-03-05
Method for inhibiting multiple inverter stations from entering passive control mode in island state
Grant 10,218,184 - Dong , et al. Feb
2019-02-26
Method And Apparatus For Controlling Hybrid Direct-Current Transmission System
App 20190052087 - ZHAO; Wenqiang ;   et al.
2019-02-14
Direct Current Switch-Off Device And Control Method Thereof
App 20190020193 - CAO; Dongming ;   et al.
2019-01-17
Hybrid back-to-back direct current transmission system and power flow reversal control method
Grant 10,181,799 - Wang , et al. Ja
2019-01-15
Voltage-source multi-level converter, DC power transmission system, and fault processing method and device
Grant 10,164,428 - Shen , et al. Dec
2018-12-25
Fault current-suppressing damper topology circuit and control method thereof and converter
Grant 10,148,083 - Xie , et al. De
2018-12-04
High voltage direct current power transmission series valve group control device
Grant 10,148,091 - Lu , et al. De
2018-12-04
Thyristor assembly radiator for DC converter valve
Grant 10,141,243 - Zhang , et al. Nov
2018-11-27
Converter valve
Grant 10,122,292 - Zhang , et al. November 6, 2
2018-11-06
Shell Structure For Thyristor Trigger Unit
App 20180302993 - CHEN; Chihan ;   et al.
2018-10-18
Converter Valve
App 20180262120 - ZHANG; Xiang ;   et al.
2018-09-13
Drive Signal Modulation Method Of Modular Multilevel Converter And Fault Isolation Method
App 20180226900 - XIE; Yeyuan ;   et al.
2018-08-09
Assembly Method For Dc Converter Valve
App 20180214997 - ZHANG; Xiang ;   et al.
2018-08-02
Passive Islanding-to-grid-connected Switch Method
App 20180219380 - Dong; Yunlong ;   et al.
2018-08-02
Thyristor Assembly Radiator For Dc Converter Valve
App 20180218965 - ZHANG; Xiang ;   et al.
2018-08-02
Converter Valve Fault Warning Method And System
App 20180196099 - GAO; Shengfu ;   et al.
2018-07-12
Fault Current-suppressing Damper Topology Circuit And Control Method Thereof And Converter
App 20180183231 - XIE; YEYUAN ;   et al.
2018-06-28
Hybrid Back-to-back Direct Current Transmission System And Power Flow Reversal Control Method
App 20180175739 - WANG; Nannan ;   et al.
2018-06-21
Method And Apparatus For Identifying Open Phase Of Circuit Breaker On Basis Of Voltage
App 20180149699 - CHEN; Jun ;   et al.
2018-05-31
Sub-module distributed control method, device and system
Grant 9,876,420 - Ding , et al. January 23, 2
2018-01-23
Direct current (DC) voltage control method and apparatus
Grant 9,876,393 - Dong , et al. January 23, 2
2018-01-23
High Voltage Direct Current Power Transmission Series Valve Group Control Device
App 20180006462 - Lu; Dongbin ;   et al.
2018-01-04
Method For Inhibiting Multiple Inverter Stations From Entering Passive Control Mode In Island State
App 20170331297 - Dong; Yunlong ;   et al.
2017-11-16
Sub-module Distributed Control Method, Device And System
App 20170317574 - DING; Jiudong ;   et al.
2017-11-02
A Resistor, A Heat Dissipater And A Combinatory Device Of Resistor And Heat Dissipater
App 20170278599 - FANG; Taixun ;   et al.
2017-09-28
A Starting Method And Stopping Method For A Static Synchronous Series Compensator
App 20170229865 - PAN; Lei ;   et al.
2017-08-10
Method For Incorporating Non-operating Station Into Operating System In Multi-terminal Flexible Dc Transmission System
App 20170207630 - DONG; Yunlong ;   et al.
2017-07-20
Apparatus For Breaking Line Bidirectional Current And Control Method Thereof
App 20170133835 - CAO; Dongming ;   et al.
2017-05-11
Apparatus for breaking line bidirectional current and control method thereof
Grant 9,634,476 - Cao , et al. April 25, 2
2017-04-25
Method for charging modular multilevel converter
Grant 9,608,511 - Wang , et al. March 28, 2
2017-03-28
Voltage-source Multi-level Converter, Dc Power Transmission System, And Fault Processing Method And Device
App 20170070047 - SHEN; Guorong ;   et al.
2017-03-09
Current source converter differential protection method and relay protection device
Grant 9,584,007 - Zhang , et al. February 28, 2
2017-02-28
Direct-current Power Transmission Protection Device, Converter And Protection Method
App 20170047727 - Cao; Dongming ;   et al.
2017-02-16
Method For Charging Modular Multilevel Converter
App 20170040885 - WANG; Nannan ;   et al.
2017-02-09
Coordination control method of multi-terminal VSC-HVDC transmission system
App 20160308359 - DONG; Yunlong ;   et al.
2016-10-20
Direct Current (dc) Voltage Control Method And Apparatus
App 20160226306 - DONG; Yunlong ;   et al.
2016-08-04
Apparatus for limiting current of line or breaking current, and control method thereof
Grant 9,362,734 - Wang , et al. June 7, 2
2016-06-07
Sub-module, Protection Unit, Converter, And Control Method Thereof
App 20160126827 - DONG; Yunlong ;   et al.
2016-05-05
Current Source Converter Differential Protection Method And Relay Protection Device
App 20160118877 - ZHANG; Qixue ;   et al.
2016-04-28
Apparatus For Limiting Current Of Line Or Breaking Current, And Control Method Thereof
App 20150372473 - WANG; Yu ;   et al.
2015-12-24
Frequency-conversion Differential Protection Method For Output Transformer Of Static Frequency Converter System
App 20150255978 - Chen; Jun ;   et al.
2015-09-10

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