CN103384062A - Isolation control system of grid power distribution fault detection - Google Patents
Isolation control system of grid power distribution fault detection Download PDFInfo
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- CN103384062A CN103384062A CN2013102883989A CN201310288398A CN103384062A CN 103384062 A CN103384062 A CN 103384062A CN 2013102883989 A CN2013102883989 A CN 2013102883989A CN 201310288398 A CN201310288398 A CN 201310288398A CN 103384062 A CN103384062 A CN 103384062A
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Abstract
The invention discloses an isolation control system of grid power distribution fault detection. The isolation control system of the grid power distribution fault detection comprises a switch, a voltage detection module, a zero sequence voltage collection module, a fault current collection module and a controller. The zero sequence voltage collection module arranged inside every grid power distribution section detects the zero sequence voltage inside the section; the condition of single-phase grounding in the section can be shown when a zero sequence voltage exceeding a limit value exists, and the controller can switch off the switch of the section according to the zero sequence voltage data accurately, accordingly the isolation of the section with the single-phase grounding can be achieved; further, according to the isolation method of the grid power distribution fault detection, a fault current is introduced as a criterion, when the fault current is not detected in a grid power distribution section, the section can be determined as a section without faults, so that a substation does not need switch-on delay determination during reswitching on the switch but directly switches on or off the switch, further power-out time duration in non-fault sections can be shortened.
Description
Technical field
The present invention relates to the power distribution network technology, relate in particular to feeder automation Fault Isolation technology.
Background technology
Existing Distribution Network Failure detection method is all generally take voltage as failure criterion.Certain in three-phase voltage occurs mutually being judged as distribution when abnormal and breaks down, transformer station's tripping operation this moment, and after transformer station's reclosing, terminal is passed through time-delay closing step by step, pricks when again tripping when power transformation, can judge that this distribution section is fault section.Such scheme can not be realized Fault Isolation for the section that single phase ground fault occurs; For the section that does not break down, need to pass through time-delay closing during the substation secondary reclosing, increase the interruption duration of non-fault section.Therefore there is the problem of protection blind area and the non-fault section interruption duration of increase in prior art.
Summary of the invention
For the problems referred to above, the invention provides a kind of Distribution Network Failure detection isolation control system that can realize the single phase ground fault isolation features, effectively reduce non-fault section interruption duration.
The present invention is that the technical scheme that its technical problem of solution adopts is:
Distribution Network Failure detects isolation control system, comprising: be arranged on the on-off switch that each distribution section is used for controlling this distribution section divide-shut brake; Be arranged in each distribution section the voltage detection module for detection of the three-phase voltage size; Be arranged on the residual voltage acquisition module that is used for gathering the residual voltage data in each distribution section; Be arranged on the fault current acquisition module that is used for gathering the fault current data in each distribution section; And, being used for controlling the controller that on-off switch moves, the output of voltage detection module, residual voltage acquisition module, fault current acquisition module is connected with controller, and the control end of on-off switch is connected with controller; When the on-off switch in the distribution section was in "on" position, after the residual voltage acquisition module detected residual voltage greater than the preset value size, controller was controlled the on-off switch separating brake of this distribution section, realizes the isolation of this distribution section; When the on-off switch in the distribution section was in "on" position, the fault current acquisition module did not detect fault current, and the on-off switch for this distribution section during distribution secondary reclosing does not need through delay confirmation, directly controlled its on-off switch and closed a floodgate.
Described residual voltage acquisition module is voltage transformer or the electronic voltage transducer with zero sequence voltage detection function.
The invention has the beneficial effects as follows: the present invention detects the residual voltage in section in the set residual voltage acquisition module of each distribution section, when having the residual voltage that surpasses limit value, show that there is the situation of single-phase earthing in this section, controller can carry out separating brake to the on-off switch of this section exactly based on these residual voltage data, thereby realizes the isolation of single phase ground fault section; It is criterion that the present invention further introduces fault current, when the distribution section does not detect fault current, can determine that this section does not break down, transformer station does not need through the combined floodgate delay confirmation during reclosing, directly control switch closes a floodgate, to reduce the interruption duration of non-fault section.
Description of drawings
Be further detailed below in conjunction with the drawings and specific embodiments:
Fig. 1 is that system of the present invention forms schematic diagram.
Embodiment
Distribution Network Failure detection isolation control system of the present invention is used for the divide-shut brake situation of the different sections of distribution is controlled, and realizes Fault Isolation.
As shown in Figure 1, control system comprises the on-off switch 1 that is arranged on each distribution barrier section and is used for controlling this distribution section divide-shut brake, be arranged on each distribution section for detection of the voltage detection module 2 of three-phase voltage size, be arranged on the residual voltage acquisition module 3 that is used for gathering the residual voltage data in each distribution section, be arranged on each distribution section be used for gathering the fault current data fault current acquisition module 4 and, be used for controlling the controller 5 of on-off switch action.The output of voltage detection module 2, residual voltage acquisition module 3, fault current acquisition module 4 is connected with controller 5, and the control end of on-off switch 1 is connected with controller 5.Above-mentioned voltage detection module 2, residual voltage acquisition module 3, fault current acquisition module 4 and on-off switch 1 are generally positioned in single distribution terminal, exist in integrally-built mode.This distribution terminal can be realized the mutual of data by different communication modes and controller 5.Preferred voltage transformer SPS or the electronic voltage transducer EVT with zero sequence voltage detection function of adopting of residual voltage acquisition module 3 in the present invention realizes.
Operation principle of the present invention is as follows: when the on-off switch in the distribution section is in "on" position, after the residual voltage acquisition module detects residual voltage greater than the preset value size, controller is controlled the on-off switch separating brake of this distribution section, realizes the isolation of this distribution section; When the on-off switch in the distribution section is in "on" position, the fault current acquisition module does not detect fault current, on-off switch for this distribution section during distribution secondary reclosing does not need through delay confirmation, directly control its on-off switch and close a floodgate, to reduce the interruption duration of non-fault section.
Embodiments of the present invention are not restricted to the described embodiments, as long as it reaches technique effect of the present invention with essentially identical means, all should belong to protection scope of the present invention.
Claims (2)
1. Distribution Network Failure detects isolation control system, it is characterized in that comprising:
Be arranged on the on-off switch that each distribution section is used for controlling this distribution section divide-shut brake;
Be arranged in each distribution section the voltage detection module for detection of the three-phase voltage size;
Be arranged on the residual voltage acquisition module that is used for gathering the residual voltage data in each distribution section;
Be arranged on the fault current acquisition module that is used for gathering the fault current data in each distribution section; And,
Be used for controlling the controller of on-off switch action, the output of voltage detection module, residual voltage acquisition module, fault current acquisition module is connected with controller, and the control end of on-off switch is connected with controller;
When the on-off switch in the distribution section was in "on" position, after the residual voltage acquisition module detected residual voltage greater than the preset value size, controller was controlled the on-off switch separating brake of this distribution section, realizes the isolation of this distribution section;
When the on-off switch in the distribution section was in "on" position, the fault current acquisition module did not detect fault current, and the on-off switch for this distribution section during distribution secondary reclosing does not need through delay confirmation, directly controlled its on-off switch and closed a floodgate.
2. Distribution Network Failure according to claim 1 detects isolation control system, it is characterized in that described residual voltage acquisition module is voltage transformer or the electronic voltage transducer with zero sequence voltage detection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310288398.9A CN103384062B (en) | 2013-07-10 | 2013-07-10 | Isolation control system of grid power distribution fault detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310288398.9A CN103384062B (en) | 2013-07-10 | 2013-07-10 | Isolation control system of grid power distribution fault detection |
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| CN103384062A true CN103384062A (en) | 2013-11-06 |
| CN103384062B CN103384062B (en) | 2016-04-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698647A (en) * | 2013-12-23 | 2014-04-02 | 广东电网公司茂名供电局 | Automatic detection method of electrical power system single-phase earth fault |
| CN108628215A (en) * | 2018-05-19 | 2018-10-09 | 安徽国电京润电力科技有限公司 | A kind of Distribution Network Failure detection isolation automatic control system |
| CN108899862A (en) * | 2018-06-21 | 2018-11-27 | 江苏中房电力安装工程有限公司 | A kind of substation's Distribution Network Failure detection isolation automatic control system |
| CN112540322A (en) * | 2020-12-29 | 2021-03-23 | 广东电网有限责任公司电力科学研究院 | Line selection method, device and equipment for single-phase earth fault line of feeder line of transformer substation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3433616A1 (en) * | 1984-08-08 | 1986-02-20 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | PROTECTIVE DEVICE FOR AN ELECTRICAL NET |
| CN2472395Y (en) * | 2001-02-28 | 2002-01-16 | 西安前进电器实业有限公司 | Automatic fault monitoring terminals for power distribution |
| CN201398071Y (en) * | 2009-02-25 | 2010-02-03 | 北京盛华宏业科技有限公司 | Low current ground fault automatic isolation device based on line recloser |
| CN102487217A (en) * | 2010-12-02 | 2012-06-06 | 北京水木源华电气有限公司 | Automated remote terminal of power distribution line |
-
2013
- 2013-07-10 CN CN201310288398.9A patent/CN103384062B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3433616A1 (en) * | 1984-08-08 | 1986-02-20 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | PROTECTIVE DEVICE FOR AN ELECTRICAL NET |
| CN2472395Y (en) * | 2001-02-28 | 2002-01-16 | 西安前进电器实业有限公司 | Automatic fault monitoring terminals for power distribution |
| CN201398071Y (en) * | 2009-02-25 | 2010-02-03 | 北京盛华宏业科技有限公司 | Low current ground fault automatic isolation device based on line recloser |
| CN102487217A (en) * | 2010-12-02 | 2012-06-06 | 北京水木源华电气有限公司 | Automated remote terminal of power distribution line |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698647A (en) * | 2013-12-23 | 2014-04-02 | 广东电网公司茂名供电局 | Automatic detection method of electrical power system single-phase earth fault |
| CN103698647B (en) * | 2013-12-23 | 2016-06-22 | 广东电网公司茂名供电局 | A kind of automatic testing method of Single-phase Earth Fault of Power System |
| CN108628215A (en) * | 2018-05-19 | 2018-10-09 | 安徽国电京润电力科技有限公司 | A kind of Distribution Network Failure detection isolation automatic control system |
| CN108899862A (en) * | 2018-06-21 | 2018-11-27 | 江苏中房电力安装工程有限公司 | A kind of substation's Distribution Network Failure detection isolation automatic control system |
| CN112540322A (en) * | 2020-12-29 | 2021-03-23 | 广东电网有限责任公司电力科学研究院 | Line selection method, device and equipment for single-phase earth fault line of feeder line of transformer substation |
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| Publication number | Publication date |
|---|---|
| CN103384062B (en) | 2016-04-27 |
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