CN104076249A - Three-phase three-winding transformer one-phase ground fault coverage diagnostic method - Google Patents
Three-phase three-winding transformer one-phase ground fault coverage diagnostic method Download PDFInfo
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- CN104076249A CN104076249A CN201410336710.1A CN201410336710A CN104076249A CN 104076249 A CN104076249 A CN 104076249A CN 201410336710 A CN201410336710 A CN 201410336710A CN 104076249 A CN104076249 A CN 104076249A
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CN201410336710.1A CN104076249A (en) | 2014-07-15 | 2014-07-15 | Three-phase three-winding transformer one-phase ground fault coverage diagnostic method |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106990318A (en) * | 2017-06-07 | 2017-07-28 | 国网山西省电力公司电力科学研究院 | Three-phase three-winding transformer medium voltage side earth fault alerts method of discrimination and its device |
CN111273194A (en) * | 2020-04-01 | 2020-06-12 | 李晓明 | Extraction method, line selection method and system for small current ground fault quantity of transformer |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008241668A (en) * | 2007-03-29 | 2008-10-09 | Daihen Corp | Ground fault detector |
JP2009247140A (en) * | 2008-03-31 | 2009-10-22 | Daihen Corp | Ground detecting apparatus |
CN101615784A (en) * | 2009-07-31 | 2009-12-30 | 西安交通大学 | Transmission line zero sequence longitudinal protection method based on the transformer neutral point zero-sequence current |
CN102508098A (en) * | 2011-10-31 | 2012-06-20 | 许继电气股份有限公司 | Quick distinguishing method for zero-sequence directional elements of alternating-current and direct-current serial-parallel power grid |
JP5020508B2 (en) * | 2005-12-07 | 2012-09-05 | 北陸電力株式会社 | Ground fault direction detector |
CN102788934A (en) * | 2012-07-25 | 2012-11-21 | 深圳市普禄科智能检测设备有限公司 | Method and device for finding line ground fault point |
CN102928739A (en) * | 2012-11-02 | 2013-02-13 | 华北电力大学(保定) | Method and system used for locating power grid single-phase ground faults and based on wireless sensor network |
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2014
- 2014-07-15 CN CN201410336710.1A patent/CN104076249A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5020508B2 (en) * | 2005-12-07 | 2012-09-05 | 北陸電力株式会社 | Ground fault direction detector |
JP2008241668A (en) * | 2007-03-29 | 2008-10-09 | Daihen Corp | Ground fault detector |
JP2009247140A (en) * | 2008-03-31 | 2009-10-22 | Daihen Corp | Ground detecting apparatus |
CN101615784A (en) * | 2009-07-31 | 2009-12-30 | 西安交通大学 | Transmission line zero sequence longitudinal protection method based on the transformer neutral point zero-sequence current |
CN102508098A (en) * | 2011-10-31 | 2012-06-20 | 许继电气股份有限公司 | Quick distinguishing method for zero-sequence directional elements of alternating-current and direct-current serial-parallel power grid |
CN102788934A (en) * | 2012-07-25 | 2012-11-21 | 深圳市普禄科智能检测设备有限公司 | Method and device for finding line ground fault point |
CN102928739A (en) * | 2012-11-02 | 2013-02-13 | 华北电力大学(保定) | Method and system used for locating power grid single-phase ground faults and based on wireless sensor network |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106990318A (en) * | 2017-06-07 | 2017-07-28 | 国网山西省电力公司电力科学研究院 | Three-phase three-winding transformer medium voltage side earth fault alerts method of discrimination and its device |
CN106990318B (en) * | 2017-06-07 | 2019-04-16 | 国网山西省电力公司电力科学研究院 | Three-phase three-winding transformer medium voltage side ground fault alerts method of discrimination and its device |
CN111273194A (en) * | 2020-04-01 | 2020-06-12 | 李晓明 | Extraction method, line selection method and system for small current ground fault quantity of transformer |
CN111273194B (en) * | 2020-04-01 | 2022-02-11 | 李晓明 | Extraction method, line selection method and system for small current ground fault quantity of transformer |
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C06 | Publication | ||
PB01 | Publication | ||
ASS | Succession or assignment of patent right |
Owner name: STATE GRID FUJIAN ELECTRIC POWER CO., LTD. MAINTEN Free format text: FORMER OWNER: STATE GRID FUJIAN ELECTRIC POWER CO., LTD. MAINTENANCE BRANCH COMPANY OF STATE GRID FUJIAN ELECTRIC POWER COMPANY Effective date: 20140928 |
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C41 | Transfer of patent application or patent right or utility model | ||
C53 | Correction of patent of invention or patent application | ||
CB03 | Change of inventor or designer information |
Inventor after: Zeng Huimin Inventor after: Lin Fuhong Inventor before: Zeng Huimin |
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COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CENG HUIMIN TO: CENG HUIMIN LIN FUHONG |
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TA01 | Transfer of patent application right |
Effective date of registration: 20140928 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: State Grid Fujian Electric Power Co., Ltd. Applicant after: Maintenance branch company of State Grid Fujian Electric Power Co., Ltd. Applicant after: PUTIAN POWER SUPPLY COMPANY, STATE GRID FUJIAN ELECTRIC POWER CO., LTD. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: State Grid Fujian Electric Power Co., Ltd. Applicant before: Maintenance branch company of State Grid Fujian Electric Power Co., Ltd. |
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RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141001 |