CN201828632U - Transformer substation grounded screen intelligent diagnostic apparatus - Google Patents
Transformer substation grounded screen intelligent diagnostic apparatus Download PDFInfo
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- CN201828632U CN201828632U CN2010205770310U CN201020577031U CN201828632U CN 201828632 U CN201828632 U CN 201828632U CN 2010205770310 U CN2010205770310 U CN 2010205770310U CN 201020577031 U CN201020577031 U CN 201020577031U CN 201828632 U CN201828632 U CN 201828632U
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- channel selector
- voltage
- selector switch
- transformer substation
- grounded screen
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Abstract
The utility model relates to a transformer substation grounded screen which belongs to the safety field of a transformer substation power grid. A transformer substation grounded screen intelligent diagnostic apparatus is characterized by comprising a data collector (1) used for collecting voltage or current signals of all the monitoring points of the grounded screen, wherein the data collector (1) consists of a current channel selector (11), a voltage channel selector (12) and an acquisition card (13); the acquisition card (13) is connected with the current channel selector (11) and the voltage channel selector (12) respectively and is connected with a control host (2); the acquisition card (13) receives the signals of from the control host (2) and selects a corresponding voltage channel or a current channel to carry out data acquisition; and the current channel selector (11) and the voltage channel selector (12) are connected with all the related monitoring points respectively. The diagnostic apparatus enables the monitoring on the whole grounded screen to be digitized through once wiring by the data collector matched with the control host, therefore, the labor intensity of the testing personnel is reduced.
Description
Technical field
The utility model relates to the grounded screen of transformer station, relates in particular to a kind of grounded screen intelligent diagnosing instrument of transformer station.
Background technology
Grounded screen is the unified network of working earthing in the systems such as generating plant, transformer station, protective ground, lightning protection, anti static grounding; be the visual plant that guarantees electric system electrical equipment safe operation and personal safety, must regularly test by relevant regulations the various parameters of grounding net of transformer substation.
The test of stake resistance mainly contains big electric current of power frequency and the little current method of frequency conversion at present.The big current method of power frequency does not generally use because the equipment heaviness is tested inconvenience.The little current method of frequency conversion is owing to can avoid the power frequency interference, and injection current is little, and equipment is easy to carry, and the measuring accuracy height becomes main method of testing at present.
Existing earth resistance tester is spot measurement, and the Grounding Grid of Large Substation area is big, equipment is more, needs repeatedly to measure when carrying out parameter testing such as earth mat potential measurement, touch voltage, step voltage, and tester's labour intensity is very big.When the grounded screen copper bar has the burn into loose contact, be difficult to carry out malfunction elimination.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of grounding net of transformer substation intelligent diagnosing instrument, and it is big to solve existing spot measurement instrument labour intensity, the length that expends time in, and be difficult to carry out the defective of malfunction elimination.
Technical scheme
A kind of grounding net of transformer substation intelligent diagnosing instrument, it is characterized in that: comprise the voltage of each monitoring point of collection grounded screen or the data acquisition unit of current signal, described data acquisition unit is made up of current channel selector switch and voltage channel selector switch and capture card, described capture card is connected with the voltage channel selector switch with the current channel selector switch respectively, and be connected with main control system, described capture card receives the signal of main control system, select relevant voltage passage or current channel to carry out data acquisition, described current channel selector switch links to each other with relevant each monitoring point respectively with the voltage channel selector switch.
Described current channel selector switch and voltage channel selector switch are made up of relay and logic decoder, and logic decoder receives the passage gating signal that capture card sends, and pilot relay is connected the passage of selecting.
Be wireless connections between described capture card and the main control system.
Described current channel selector switch is connected with 4 electric current input channels.
Described voltage channel selector switch is connected with 120 voltage input channels.
Beneficial effect
Grounded screen intelligent diagnosing instrument of the present utility model, adopt data acquisition unit to cooperate the monitoring digitizing of main control system by once connecting up with whole grounded screen, not only can ensure the reliable and secure operation of grounding net of transformer substation, and reduce tester's labour intensity greatly, and can the base area network operation period earth mat be detected, thereby accurately locate the grounded screen fault point, and then the assessment grounded screen life-span, estimate grounded screen loaded current valley degree, even information can be kept, set up the life cycle database of grounded screen, be the reconstruction of grounded screen, enlarging, design provides the data support of science.
Description of drawings
Fig. 1 is the utility model synoptic diagram.
Wherein: 1-data acquisition unit, 2-main control system, 11-current channel selector switch, 12-voltage channel selector switch, 13-capture card.
Embodiment
Below in conjunction with specific embodiments and the drawings, further set forth the utility model.
A kind of grounding net of transformer substation intelligent diagnosing instrument, comprise the voltage of each monitoring point of collection grounded screen or the data acquisition unit 1 of current signal, described data acquisition unit 1 is made up of current channel selector switch 11 and voltage channel selector switch 12 and capture card 13, described capture card 13 is connected with voltage channel selector switch 12 with current channel selector switch 11 respectively, and be connected with main control system 2, described capture card 13 receives the signal of main control system 2, select relevant voltage passage or current channel to carry out data acquisition, described current channel selector switch 11 links to each other with relevant each monitoring point respectively with voltage channel selector switch 12.
Described current channel selector switch 11 and voltage channel selector switch 12 are made up of relay and logic decoder, and logic decoder receives the passage gating signal that capture card 13 sends, and pilot relay is connected the passage of selecting.
Be wireless connections between described capture card 13 and the main control system 2.During test, main control system 2 sends instruction by wireless signal and gives capture card 13, and capture card 13 receives that instruction back selection relevant voltage passage and current channel carry out data acquisition.
Described current channel selector switch 11 is connected with 4 electric current input channels, and described voltage channel selector switch 12 is connected with 120 voltage input channels, 120 of corresponding voltage measurement points, 4 of current measurement point.Because measurement point is numerous, can take per 5 voltage signals to be connected to the aviation socket of one 7 core on data acquisition unit 1 panel, totally 24 voltage input sockets are economized line and easy for installation, 4 current signals are connected to aviation socket on data acquisition unit 1 panel, totally 1 electric current input socket.
According to coiling and interface difference, the connecting line selection has voltage signal drum, ground connection drum, electric current to inject three kinds of signal drums.Power supply can be selected the multifrequency constant current source for use.
This grounded screen intelligent diagnosing instrument just can carry out parameter measurements such as earth mat electromotive force, stake resistance, touch voltage, step voltage, electrically conducting by computer control by once connecting up, and can carry out repeatedly repeated measurement.When grounded screen had fault, selectivity was injected the frequency conversion electric current, according to the earth mat potential energy diagram, just can judge abort situation, reduces tester's labour intensity greatly.But and the base area network operation period earth mat is detected.Can also accurately locate grounded screen fault point, assessment grounded screen life-span, estimate grounded screen loaded current valley degree.Set up the life cycle database of grounded screen, can carry out digital management to the grounding net of transformer substation in a certain area after the networking.
Claims (5)
1. grounding net of transformer substation intelligent diagnosing instrument, it is characterized in that: comprise the voltage of each monitoring point of collection grounded screen or the data acquisition unit (1) of current signal, described data acquisition unit (1) is made up of current channel selector switch (11) and voltage channel selector switch (12) and capture card (13), described capture card (13) is connected with voltage channel selector switch (12) with current channel selector switch (11) respectively, and be connected with main control system (2), described capture card (13) receives the signal of main control system (2), select relevant voltage passage or current channel to carry out data acquisition, described current channel selector switch (11) links to each other with relevant each monitoring point respectively with voltage channel selector switch (12).
2. grounding net of transformer substation intelligent diagnosing instrument as claimed in claim 1, it is characterized in that: described current channel selector switch (11) and voltage channel selector switch (12) are made up of relay and logic decoder, logic decoder receives the passage gating signal that capture card (13) sends, and pilot relay is connected the passage of selecting.
3. grounding net of transformer substation intelligent diagnosing instrument as claimed in claim 1 is characterized in that: be wireless connections between described capture card (13) and the main control system (2).
4. as claim 1 or 2 or 3 described grounding net of transformer substation intelligent diagnosing instruments, it is characterized in that: described current channel selector switch (11) is connected with 4 electric current input channels.
5. as claim 1 or 2 or 3 described grounding net of transformer substation intelligent diagnosing instruments, it is characterized in that: described voltage channel selector switch (12) is connected with 120 voltage input channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205770310U CN201828632U (en) | 2010-10-26 | 2010-10-26 | Transformer substation grounded screen intelligent diagnostic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205770310U CN201828632U (en) | 2010-10-26 | 2010-10-26 | Transformer substation grounded screen intelligent diagnostic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201828632U true CN201828632U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205770310U Expired - Fee Related CN201828632U (en) | 2010-10-26 | 2010-10-26 | Transformer substation grounded screen intelligent diagnostic apparatus |
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| Country | Link |
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| CN (1) | CN201828632U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680820A (en) * | 2012-05-08 | 2012-09-19 | 湖州电力局 | Automatic testing and diagnosing system for corrosion fault points of grounding grid of substation |
| CN104777368A (en) * | 2015-05-05 | 2015-07-15 | 成都电兴科技有限责任公司 | On-line monitoring instrument and detection method of alternating current variable-frequency ground resistor |
| CN110082633A (en) * | 2019-04-23 | 2019-08-02 | 史磊 | A kind of grounding net of transformer substation on-line monitoring system and method |
| CN112816905A (en) * | 2020-12-12 | 2021-05-18 | 天津市中力防雷技术有限公司 | Logic method for selecting test point location to carry out grounding information detection |
-
2010
- 2010-10-26 CN CN2010205770310U patent/CN201828632U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680820A (en) * | 2012-05-08 | 2012-09-19 | 湖州电力局 | Automatic testing and diagnosing system for corrosion fault points of grounding grid of substation |
| CN104777368A (en) * | 2015-05-05 | 2015-07-15 | 成都电兴科技有限责任公司 | On-line monitoring instrument and detection method of alternating current variable-frequency ground resistor |
| CN104777368B (en) * | 2015-05-05 | 2016-03-02 | 成都电兴科技有限责任公司 | AC frequency conversion stake resistance on-line computing model and detection method |
| CN110082633A (en) * | 2019-04-23 | 2019-08-02 | 史磊 | A kind of grounding net of transformer substation on-line monitoring system and method |
| CN112816905A (en) * | 2020-12-12 | 2021-05-18 | 天津市中力防雷技术有限公司 | Logic method for selecting test point location to carry out grounding information detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20161026 |
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| CF01 | Termination of patent right due to non-payment of annual fee |