CN107516878B - 间歇性高阻接地保护方法和*** - Google Patents
间歇性高阻接地保护方法和*** Download PDFInfo
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- CN107516878B CN107516878B CN201710730010.4A CN201710730010A CN107516878B CN 107516878 B CN107516878 B CN 107516878B CN 201710730010 A CN201710730010 A CN 201710730010A CN 107516878 B CN107516878 B CN 107516878B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001186 cumulative effect Effects 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 23
- 230000007935 neutral effect Effects 0.000 claims description 19
- 230000005611 electricity Effects 0.000 description 7
- 210000001367 artery Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004080 punching Methods 0.000 description 6
- 210000003462 vein Anatomy 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 101100499229 Mus musculus Dhrsx gene Proteins 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
R<sub>g</sub>(Ω) | 线路1 | 线路2 | 线路3 | 线路4 |
100 | 1.33e-3 | 4.21e-4 | 2.24e-3 | 4.81 |
200 | 3.74e-4 | 1.18e-4 | 6.27e-4 | 1.35 |
400 | 9.91e-5 | 3.13e-5 | 1.66e-4 | 0.358 |
600 | 4.49e-5 | 1.42e-5 | 7.54e-5 | 0.162 |
800 | 2.55e-5 | 8.05e-6 | 4.28e-5 | 0.0921 |
1000 | 1.64e-5 | 5.18e-6 | 2.76e-5 | 0.0592 |
R<sub>g</sub>(Ω) | 线路1 | 线路2 | 线路3 | 线路4 |
100 | 0.218 | 0.148 | 0.261 | 0.904 |
200 | 0.0610 | 0.0406 | 0.0732 | 0.253 |
400 | 0.0162 | 0.0108 | 0.0194 | 0.0672 |
600 | 7.33e-3 | 4.88e-3 | 8.81e-3 | 0.0305 |
800 | 4.16e-3 | 2.77e-3 | 5.00e-3 | 0.0173 |
1000 | 2.68e-3 | 1.78e-3 | 3.22e-3 | 0.0111 |
R<sub>g</sub>(Ω) | 线路1 | 线路2 | 线路3 | 线路4 |
100 | 0.0248 | 0.0115 | 0.0608 | 3.31 |
200 | 7.11e-3 | 3.29e-3 | 0.0175 | 0.951 |
400 | 1.91e-3 | 8.84e-4 | 4.69e-3 | 0.255 |
600 | 8.70e-4 | 4.03e-4 | 2.13e-3 | 0.116 |
800 | 4.95e-4 | 2.29e-4 | 1.22e-3 | 0.0662 |
1000 | 3.19e-4 | 1.48e-4 | 7.83e-4 | 0.0427 |
Claims (9)
Priority Applications (1)
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CN201710730010.4A CN107516878B (zh) | 2017-08-23 | 2017-08-23 | 间歇性高阻接地保护方法和*** |
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CN201710730010.4A CN107516878B (zh) | 2017-08-23 | 2017-08-23 | 间歇性高阻接地保护方法和*** |
Publications (2)
Publication Number | Publication Date |
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CN107516878A CN107516878A (zh) | 2017-12-26 |
CN107516878B true CN107516878B (zh) | 2019-04-19 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109728568B (zh) * | 2018-12-17 | 2020-11-27 | 广东电网有限责任公司广州供电局 | 小电阻接地***高阻接地保护的启动方法和装置 |
CN110601157B (zh) * | 2019-09-30 | 2021-07-30 | 南京国电南自电网自动化有限公司 | 一种间歇性单相接地故障保护方法及装置 |
CN111474494B (zh) * | 2020-03-20 | 2022-08-26 | 南京南瑞继保工程技术有限公司 | 一种小电阻接地***的高阻接地故障检测方法、装置 |
CN113746069B (zh) * | 2020-05-28 | 2024-06-18 | 中国南方电网有限责任公司 | 一种接地变压器接地故障的保护方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103529358B (zh) * | 2013-08-15 | 2016-10-05 | 国家电网公司 | 用电流信息检测中压配电***持续性高阻接地故障的方法 |
CN103529344B (zh) * | 2013-08-15 | 2017-02-15 | 国家电网公司 | 采用“间歇性检测”来检测间歇性高阻接地故障的方法 |
CN103529316B (zh) * | 2013-08-15 | 2016-09-21 | 国家电网公司 | 一种电力***高阻接地故障的综合检测方法 |
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Effective date of registration: 20190111 Address after: 510620 No. 2 Tianhe two road, Tianhe District, Guangzhou, Guangdong Applicant after: GUANGZHOU POWER SUPPLY Co.,Ltd. Applicant after: NR ENGINEERING Co.,Ltd. Address before: 510620 No. 2 Tianhe two road, Tianhe District, Guangzhou, Guangdong Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. Applicant before: NR ELECTRIC Co.,Ltd. |
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Effective date of registration: 20231024 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee after: NR ENGINEERING Co.,Ltd. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. Patentee before: NR ENGINEERING Co.,Ltd. |