CN108963974B - 一种防止区外故障切除差动保护误动的方法及装置 - Google Patents
一种防止区外故障切除差动保护误动的方法及装置 Download PDFInfo
- Publication number
- CN108963974B CN108963974B CN201810622397.6A CN201810622397A CN108963974B CN 108963974 B CN108963974 B CN 108963974B CN 201810622397 A CN201810622397 A CN 201810622397A CN 108963974 B CN108963974 B CN 108963974B
- Authority
- CN
- China
- Prior art keywords
- differential protection
- phase
- current
- external area
- area error
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Transformers (AREA)
Abstract
Description
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810622397.6A CN108963974B (zh) | 2018-06-15 | 2018-06-15 | 一种防止区外故障切除差动保护误动的方法及装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810622397.6A CN108963974B (zh) | 2018-06-15 | 2018-06-15 | 一种防止区外故障切除差动保护误动的方法及装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108963974A CN108963974A (zh) | 2018-12-07 |
CN108963974B true CN108963974B (zh) | 2019-11-12 |
Family
ID=64489063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810622397.6A Active CN108963974B (zh) | 2018-06-15 | 2018-06-15 | 一种防止区外故障切除差动保护误动的方法及装置 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108963974B (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109672154B (zh) * | 2019-01-08 | 2020-09-22 | 许昌许继软件技术有限公司 | 一种防止非故障相饱和差动保护误动的方法及装置 |
CN110492444B (zh) * | 2019-09-10 | 2022-04-05 | 许昌许继软件技术有限公司 | 变电站母线差动保护方法与装置 |
CN111987698B (zh) * | 2020-07-30 | 2022-10-04 | 许继集团有限公司 | 不同类型电流互感器混用线路的微分电流差动保护方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103762551A (zh) * | 2014-01-27 | 2014-04-30 | 国家电网公司 | 基于断路器分闸位置加速封ta切除变压器死区故障的继电保护方法 |
CN104319736B (zh) * | 2014-10-17 | 2017-02-15 | 许继集团有限公司 | 一种特高压变压器差动保护方法 |
CN104638618B (zh) * | 2015-02-11 | 2016-03-02 | 国网山东省电力公司潍坊供电公司 | 一种gis母线设备跳闸快速恢复供电方法 |
-
2018
- 2018-06-15 CN CN201810622397.6A patent/CN108963974B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN108963974A (zh) | 2018-12-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108963974B (zh) | 一种防止区外故障切除差动保护误动的方法及装置 | |
US10236675B2 (en) | Fault detection and protection during steady state using traveling waves | |
CN106129971B (zh) | 一种母线保护装置断路器双重失灵故障隔离方法及系统 | |
CN104410042B (zh) | 一种基于双ad采样的智能变电站继电保护方法 | |
US10033176B2 (en) | Fault interrupting devices and control methods therefor | |
CN106684824B (zh) | 一种基于电流互感器断线的变压器差动保护方法及装置 | |
JP2012503960A (ja) | 電力系統における計器用変成器の二次回路を管理する方法及び装置 | |
CN107919651B (zh) | 一种抽能电抗器抽能绕组匝间零序保护方法及装置 | |
CN102664392B (zh) | 基于冗余ct绕组的差动保护方法 | |
CN105140893A (zh) | 一种差动保护ct饱和识别方法 | |
CN104466903A (zh) | 一种差动保护的电流互感器饱和识别方法 | |
CN108134372B (zh) | 电抗器电流互感器断线识别方法、差动保护方法及装置 | |
CN105429111B (zh) | 防止3/2接线单ct饱和引起光纤差动保护误动的方法 | |
CN104682360A (zh) | 一种识别电流互感器饱和的方法及装置 | |
CN105021920B (zh) | 一种主变励磁涌流多特征识别方法 | |
CN109038489A (zh) | 一种高压并联电抗器匝间故障保护方法 | |
CN109449894A (zh) | 一种有源配电网电流差动保护方法及装置 | |
CN102646957B (zh) | 适用于特高压调压变压器保护的二次谐波涌流闭锁方法 | |
CN106300284B (zh) | 双母单分防止区外故障误跳异常母联/分段的方法、装置 | |
CN106199337A (zh) | 一种基于模拟量和开关量组合判断的电网故障分析方法 | |
CN103869202A (zh) | 变压器高压侧断相的检测方法及系统 | |
CN108336717B (zh) | 一种适用于调相机变压器组启机过程全区域的启机保护方法 | |
KR101073205B1 (ko) | 비대칭 고장 전류 제거가 가능한 재폐로 차단 장치 및 그 제어방법 | |
CN107134763B (zh) | 一种故障跳闸快速返回的判别方法 | |
CN108963976A (zh) | 基于差动电流极坐标系相空间重构技术的变压器励磁涌流识别方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230103 Address after: 461100 Weiwu Avenue and Yongxing East Road Intersection, Urban Rural Integration Demonstration Zone, Xuchang City, Henan Province, 150 meters east and north Patentee after: Henan Xujijibao Electric Automation Co.,Ltd. Patentee after: XJ Group Corp. Patentee after: XJ ELECTRIC Co.,Ltd. Patentee after: XUCHANG XUJI SOFTWARE TECHNOLOGY Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XJ Group Corp. Patentee before: XJ ELECTRIC Co.,Ltd. Patentee before: XUCHANG XUJI SOFTWARE TECHNOLOGY Co.,Ltd. |
|
TR01 | Transfer of patent right |