CN1447124A - Method for detecting ground fault in DC system - Google Patents
Method for detecting ground fault in DC system Download PDFInfo
- Publication number
- CN1447124A CN1447124A CN 02108801 CN02108801A CN1447124A CN 1447124 A CN1447124 A CN 1447124A CN 02108801 CN02108801 CN 02108801 CN 02108801 A CN02108801 A CN 02108801A CN 1447124 A CN1447124 A CN 1447124A
- Authority
- CN
- China
- Prior art keywords
- signal
- detection method
- capacitance
- harmonic
- branch road
- 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.)
- Granted
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB021088012A CN1327235C (en) | 2002-03-24 | 2002-04-01 | Method for detecting ground fault in DC system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN02213571.5 | 2002-03-24 | ||
CN02213571 | 2002-03-24 | ||
CNB021088012A CN1327235C (en) | 2002-03-24 | 2002-04-01 | Method for detecting ground fault in DC system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1447124A true CN1447124A (en) | 2003-10-08 |
CN1327235C CN1327235C (en) | 2007-07-18 |
Family
ID=28455400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB021088012A Expired - Fee Related CN1327235C (en) | 2002-03-24 | 2002-04-01 | Method for detecting ground fault in DC system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1327235C (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101981774A (en) * | 2008-04-03 | 2011-02-23 | 西门子公司 | Method and arrangement for generating an error signal |
CN102483436A (en) * | 2009-09-24 | 2012-05-30 | 日产自动车株式会社 | Apparatus and method for detecting abnormality of high voltage circuit |
CN103091606A (en) * | 2013-02-28 | 2013-05-08 | 绥化电业局 | Grounding fault detecting method for direct current system with high anti-interference capacity |
CN104569729A (en) * | 2015-01-29 | 2015-04-29 | 深圳市科陆电子科技股份有限公司 | Fault indicator based power distribution network single-phase earth fault detection method and fault indicator based power distribution network single-phase earth fault detection system |
CN105372555A (en) * | 2015-11-05 | 2016-03-02 | 国网山西省电力公司大同供电公司 | Electric power monitoring system having fault position detection function |
CN109239441A (en) * | 2018-11-08 | 2019-01-18 | 广东电网有限责任公司 | Split-core type meter loop switch device and split-core type meter |
CN109490688A (en) * | 2018-11-12 | 2019-03-19 | 国网河南省电力公司修武县供电公司 | A kind of auxiliary device of direct current system |
CN112816829A (en) * | 2020-07-01 | 2021-05-18 | 广东电网有限责任公司揭阳供电局 | Fault positioning analysis device and method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86103090A (en) * | 1986-05-12 | 1987-02-25 | 宁景云 | The monitoring method of failure point of DC grounding and device |
CA1287884C (en) * | 1987-01-15 | 1991-08-20 | Donald I. Jeerings | High impedance fault analyzer in electric power |
JPS6412652A (en) * | 1987-07-06 | 1989-01-17 | Tokyo Gas Co Ltd | Terminal equipment for automatic meter reading |
JPH01153977A (en) * | 1987-12-11 | 1989-06-16 | Toko Denki Kk | Investigating method for accident point of multiple earth distribution line |
CN1023621C (en) * | 1992-06-22 | 1994-01-26 | 华北电力学院 | Detecting method and apparatus for earth-fault of direct-current system |
CN2228236Y (en) * | 1994-12-31 | 1996-05-29 | 戴祖明 | DC systems insulation fault in-line monitoring alarm and fault locating device |
JPH09145759A (en) * | 1995-11-28 | 1997-06-06 | Mitsubishi Electric Corp | Leakage current detector for zinc oxide type arrester |
JPH10197593A (en) * | 1997-01-07 | 1998-07-31 | Furukawa Electric Co Ltd:The | Power cable degradation judging method |
-
2002
- 2002-04-01 CN CNB021088012A patent/CN1327235C/en not_active Expired - Fee Related
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8462004B2 (en) | 2008-04-03 | 2013-06-11 | Siemens Aktiengesellschaft | Method and arrangement for generating an error signal |
CN101981774B (en) * | 2008-04-03 | 2014-06-25 | 西门子公司 | Method and arrangement for generating an error signal |
CN101981774A (en) * | 2008-04-03 | 2011-02-23 | 西门子公司 | Method and arrangement for generating an error signal |
CN102483436A (en) * | 2009-09-24 | 2012-05-30 | 日产自动车株式会社 | Apparatus and method for detecting abnormality of high voltage circuit |
US8749247B2 (en) | 2009-09-24 | 2014-06-10 | Nissan Motor Co., Ltd. | Apparatus and method for detecting abnormality of high voltage circuit |
CN102483436B (en) * | 2009-09-24 | 2015-05-20 | 日产自动车株式会社 | Apparatus and method for detecting abnormality of high voltage circuit |
CN103091606B (en) * | 2013-02-28 | 2015-05-20 | 绥化电业局 | Grounding fault detecting method for direct current system with high anti-interference capacity |
CN103091606A (en) * | 2013-02-28 | 2013-05-08 | 绥化电业局 | Grounding fault detecting method for direct current system with high anti-interference capacity |
CN104569729A (en) * | 2015-01-29 | 2015-04-29 | 深圳市科陆电子科技股份有限公司 | Fault indicator based power distribution network single-phase earth fault detection method and fault indicator based power distribution network single-phase earth fault detection system |
CN105372555A (en) * | 2015-11-05 | 2016-03-02 | 国网山西省电力公司大同供电公司 | Electric power monitoring system having fault position detection function |
CN105372555B (en) * | 2015-11-05 | 2018-04-06 | 国网山西省电力公司大同供电公司 | A kind of electric power monitoring system with abort situation detection function |
CN109239441A (en) * | 2018-11-08 | 2019-01-18 | 广东电网有限责任公司 | Split-core type meter loop switch device and split-core type meter |
CN109490688A (en) * | 2018-11-12 | 2019-03-19 | 国网河南省电力公司修武县供电公司 | A kind of auxiliary device of direct current system |
CN112816829A (en) * | 2020-07-01 | 2021-05-18 | 广东电网有限责任公司揭阳供电局 | Fault positioning analysis device and method |
CN112816829B (en) * | 2020-07-01 | 2023-07-14 | 广东电网有限责任公司揭阳供电局 | Analysis device and analysis method for fault positioning |
Also Published As
Publication number | Publication date |
---|---|
CN1327235C (en) | 2007-07-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8598887B2 (en) | Fault wave arrival determination | |
RU2739966C1 (en) | Method for determination of damage point of insulation of raking rail in tunnel/coal mine and transient resistance | |
CN104090214B (en) | A kind of Cable fault examination and aging analysis method | |
US5977773A (en) | Non-intrusive impedance-based cable tester | |
CN105223530B (en) | High-frequency partial discharge detector calibration system and calibration method thereof | |
CN101782621B (en) | Method and device for judging fault point locations in cable protective layer fault detection | |
CN105891681B (en) | A kind of cable line fault independent positioning method of the compound triggering of multiple threshold values | |
KR102117208B1 (en) | Apparatus for detecting fault location of underground cable and method thereof | |
CN1327235C (en) | Method for detecting ground fault in DC system | |
CN102768304B (en) | Method for detecting internal resistance of storage battery in energy storage system on line | |
CN1207176A (en) | Method of detecting and locating a high-resistance earth fault in an electric power network | |
CN103675623A (en) | Method and system for detecting partial discharging of GIS under impulse voltage | |
CN105301281A (en) | Monitoring method and device for flowing speed of transformer oil flow | |
CN1687799A (en) | Combined detector and combined detecting method for switch state of DC ground resistance | |
CN111175610B (en) | Fault positioning system and method for distribution line | |
CN100430743C (en) | Directional and positioning testing device for fault of direct application type cable sheath | |
US4348635A (en) | Detecting and measuring the position of a break in solid formations by measuring the capacitance of an enlongated element embedded therein | |
CN104111367B (en) | A kind of extra-high voltage direct-current voltage transformer | |
RU2703195C1 (en) | Method of determining distance to a point of reflection in an electrical conductor | |
CN1831493A (en) | Liquid nitrogen liquid level measuring device for high voltage surperconducting power equipment | |
CN203405561U (en) | Direct current power source grounding fault searching device | |
CN1687717A (en) | Material level sensor in radio frequency medium measure type | |
CN1797014A (en) | Detection method for testing current in resistance property of lightning arrester | |
CN103926468A (en) | Ground capacitance detection circuit for DC power system | |
CN1023621C (en) | Detecting method and apparatus for earth-fault of direct-current system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: SHANDONG KEHUI POWER AUTOMATION CO., LTD. Free format text: FORMER NAME: ZIBO KEHUI ELECTRIC CO., LTD. |
|
CP03 | Change of name, title or address |
Address after: 255087 Shandong Province, Zibo city Zhangdian District Fang Zhen win Road No. 16 Patentee after: Shandong Kehui Electric Co., Ltd. Address before: 255031 Shandong Province, Zibo city Zhangdian District No. 4 lane two Willow Road West Patentee before: Kehui Electrics Co., Ltd., Zibo |
|
ASS | Succession or assignment of patent right |
Owner name: LIU HONGGANG Free format text: FORMER OWNER: SHANDONG KEHUI ELECTRIC CO., LTD. Effective date: 20100921 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 255087 TO: 266707 |
|
TR01 | Transfer of patent right |
Effective date of registration: 20100921 Address after: 266707 Shandong Province Pingdu City Garden Office No. 493 Lanzhou Road No. 20 building 2 unit 503 Patentee after: Liu Honggang Address before: 255087 Shandong Province, Zibo city Zhangdian District Fang Zhen win Road No. 16 Patentee before: Shandong Kehui Electric Co., Ltd. |
|
ASS | Succession or assignment of patent right |
Owner name: SHANDONG SUN YOUTH ELECTRIC POWER TECHNOLOGY CO., Free format text: FORMER OWNER: LIU HONGGANG Effective date: 20110714 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 266707 ROOM 503, UNIT 2, BUILDING 20, NO. 493, LANZHOU ROAD, LIYUAN OFFICE, PINGDU CITY, SHANDONG PROVINCE TO: 250101 ROOM 101, NO. 192, BOLE ROAD, HIGH-TECH. ZONE, JI'NAN CITY, SHANDONG PROVINCE |
|
TR01 | Transfer of patent right |
Effective date of registration: 20110714 Address after: 101, room 192, 250101 Bole Road, hi tech Zone, Shandong, Ji'nan Patentee after: Shandong Shun Shun Power Technology Co., Ltd. Address before: 266707 Shandong Province Pingdu City Garden Office No. 493 Lanzhou Road No. 20 building 2 unit 503 Patentee before: Liu Honggang |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20160401 |
|
CF01 | Termination of patent right due to non-payment of annual fee |