CN207964994U - Grounding net of transformer substation health status detection device - Google Patents
Grounding net of transformer substation health status detection device Download PDFInfo
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- CN207964994U CN207964994U CN201820428328.7U CN201820428328U CN207964994U CN 207964994 U CN207964994 U CN 207964994U CN 201820428328 U CN201820428328 U CN 201820428328U CN 207964994 U CN207964994 U CN 207964994U
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Abstract
The utility model is related to a kind of grounding net of transformer substation health status detection devices, the device includes step current signal source module (1), grounded screen module (2), data acquisition module (3) and computer (4), the step current signal source module (1) is connect with grounded screen module (2), the data acquisition module (3) is connect with step current signal source module (1) and grounded screen module (2) respectively, the data acquisition module (3) and computer (4) connection.Compared with prior art, the utility model has the advantages that simple, accurate and is not limited by live service condition.
Description
Technical field
The utility model is related to grounding net of transformer substation detection techniques, more particularly, to a kind of grounding net of transformer substation health status
Detection device.
Background technology
The ground connection of substation is the important measures for ensureing power system security reliability service, and general method is laying ground connection
Net, the only not various electrical equipments of grounded screen with providing a common reference, and can be drained rapidly in electric power system fault
Fault current, and reduce the raising of ground potential.Thus the quality of Grounding performance is directly related to work of electric power system people
The safety and normal operation of the personal safety and various electrical equipments of member.In recent years, with the rapid growth of power demand, electric power
System scale and capacity expand rapidly, and earth short circuit current is increasing, are proposed to the security reliability of grounded screen higher
It is required that.Lay the main band steel of material used in grounded screen, failure welding when construction, soil corrosion, earth short circuit current it is electronic
The reasons such as force effect cause the burn into of band steel and grounding flat steel to be broken, and ground connection performance is made to decline.When ground short circuit occurs for system
When, ground potential exception may be caused or be unevenly distributed, the offset and the danger in machine shell of electric equipment of neutral point in electric power system
Voltage.Therefore, " health " state for understanding grounded screen in time, avoids the generation of accident, greatly reduces and stops using as a servant time and excavation
The workload of repair saves the expense for excavating repair, has important economic implications and social effect.
Utility model content
The purpose of this utility model is exactly to provide a kind of substation in order to overcome the problems of the above-mentioned prior art and connect
Earth mat health status detection device.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of grounding net of transformer substation health status detection device, the device include step current signal source module (1), ground connection
Net module (2), data acquisition module (3) and computer (4), the step current signal source module (1) and grounded screen module
(2) it connecting, the data acquisition module (3) is connect with step current signal source module (1) and grounded screen module (2) respectively,
The data acquisition module (3) and computer (4) connection.
Preferably, the step current signal source module (1) is step wave current signal generator.
Preferably, the step current signal source module (1) is the step wave current signal generator of Parameter adjustable.
Preferably, the step current signal source module (1) is connect with grounded screen module (2) respectively by Rogowski coil
Ground lead-out wire connection.
Preferably, the data acquisition module (3) is used for by Rogowski coil and step current signal source module (1)
Obtain the input quantity of step current signal source module (1)；The ground connection of the data acquisition module (3) and grounded screen module (2)
Lead-out wire connects, the output quantity for obtaining grounded screen module (2).
Preferably, the data acquisition module (3) includes that processor and the input quantity being connect respectively with processor are adopted
Storage, output quantity collector, data storage and data transmission unit, the input quantity collector pass through Rogowski coil and rank
The current signal source module (1) that jumps connects, and the output quantity collector is connect with the ground outlet of grounded screen module (2), institute
The data transmission unit stated is connect with computer (4).
Preferably, the data acquisition module (3) is connect by wireless telecommunications with computer (4).
Preferably, the computer (4) includes parameter display circuit and grounded screen health degree decision circuitry.
Compared with prior art, the utility model has the following advantages：
1, the utility model, which provides one kind, carrying out large area excavation to grounded screen, need not carry out grounded screen and connect
Earthed conductor samples and soil sample, greatly reduces the workload of grounding net of transformer substation corrosion sampling and measuring, significantly easy
A kind of advanced technology that grounded screen operating status is assessed.
2, the utility model provides a kind of ground state measurement that can represent grounded screen different location down conductor
Technology, than the true operating status that traditional power-frequency earthing impedance is better able to reflection grounded screen.
3, the utility model provides one kind and is not limited by live service condition, and the current signal of certain amplitude is used to survey
Amount, can carry out in the case where not having a power failure, and be full frequency band driving source, not interfered by substation's power frequency electromagnetic field.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is a part of the embodiment of the utility model, rather than whole embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work should all belong to this
The range of utility model protection.
As shown in Figure 1, grounding net of transformer substation health status detection device, the device include step current signal source module 1,
Grounded screen module 2, data acquisition module 3 and computer 4, the step current signal source module 1 connect with grounded screen module 2
It connects, the data acquisition module 3 is connect with step current signal source module 1 and grounded screen module 2 respectively, and the data are adopted
Collect module 3 and computer 4 connects.
The step current signal source module 1 is step wave current signal generator.More preferably, the step current
Signal source module 1 is the step wave current signal generator of Parameter adjustable.
The step current signal source module 1 is connected with the ground outlet of grounded screen module 2 respectively by Rogowski coil 5
It connects.
The data acquisition module 3 is by Rogowski coil 5 and step current signal source module 1, for obtaining step electricity
Flow the input quantity of signal source module 1；The data acquisition module 3 is connect with the ground outlet of grounded screen module 2, for obtaining
Take the output quantity of grounded screen module 2.
The data acquisition module 3 includes processor and the input quantity collector being connect respectively with processor, output
Collector, data storage and data transmission unit are measured, the input quantity collector is believed by Rogowski coil and step current
Number source module 1 connects, and the output quantity collector is connect with the ground outlet of grounded screen module 2, data transmission
Unit is connect with computer 4, and wherein processor is CPU.
The data acquisition module 3 is connect by wireless telecommunications 6 with computer 4.The computer 4 is aobvious including parameter
Show circuit and grounded screen health degree decision circuitry.
The utility model measures directive/guide according to live country and professional standard earthing or grounding means characterisitic parameter and arranges electric loop,
Based on down conductor test obtain input current and output voltage signal data to grounded screen equivalent linear discrete model into
Row parameter identifies, understands ground connection by the relative changing value compared between historical models parameter and current measured data calculating parameter
The actual motion state of net, judges whether grounded screen occurs corrosion or conductor break, and to its operating status, whether " health " carries out
Judgement, to ensure the safe and reliable operation of electric system.The test method meets the existing intelligence fortune specimen system carried out energetically
Intelligent testing technology growth requirement in construction has many advantages, such as simple, accurate and is not limited by live service condition.
The utility model use site step wave signal code generator export certain amplitude current test signal (>
10A is typically chosen 20A), it is applied on evaluated grounding net of transformer substation down conductor, measures chosen input grounding and draw
Offline current test signal (logical Regular History Frequency Rogowski coil is converted to voltage signal) and the synchronous recording selected grounding lead
Offline response output voltage signal, using parameter display circuit in portable computer to test input current and output voltage
Data are handled, and the two parameters i.e. equivalent resistance components R and equivalent inductance point of grounded screen equivalent linear discrete model are obtained
Measure L, and the equivalent resistance component for the grounding net of transformer substation same position down conductor analyzed with history survey calculation
Analysis comparison is carried out with equivalent inductance component, based on relative variation come to assess the grounding net of transformer substation be in health, sub- strong
Health still operating status in spite of illness.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality
Novel protection domain should be subject to the protection scope in claims.
Claims (8)
1. a kind of grounding net of transformer substation health status detection device, which is characterized in that the device includes step current signal source mould
Block (1), grounded screen module (2), data acquisition module (3) and computer (4), the step current signal source module (1) with
Grounded screen module (2) connect, the data acquisition module (3) respectively with step current signal source module (1) and grounded screen mould
Block (2) connects, the data acquisition module (3) and computer (4) connection.
2. the apparatus according to claim 1, it is characterised in that：The step current signal source module (1) is step wave
Current signal generator.
3. the apparatus of claim 2, it is characterised in that：The step current signal source module (1) is that parameter can
The step wave current signal generator of tune.
4. the apparatus according to claim 1, it is characterised in that：The step current signal source module (1) passes through Roche
Coil is connect with the ground outlet of grounded screen module (2) respectively.
5. the apparatus according to claim 1, it is characterised in that：The data acquisition module (3) by Rogowski coil with
Step current signal source module (1), the input quantity for obtaining step current signal source module (1)；The data acquisition module
Block (3) is connect with the ground outlet of grounded screen module (2), the output quantity for obtaining grounded screen module (2).
6. device according to claim 5, it is characterised in that：The data acquisition module (3) include processor and
Input quantity collector, output quantity collector, data storage and the data transmission unit being connect respectively with processor, described is defeated
Enter amount collector to connect with step current signal source module (1) by Rogowski coil, the output quantity collector and grounded screen
The ground outlet of module (2) connects, and the data transmission unit is connect with computer (4).
7. the apparatus according to claim 1, it is characterised in that：The data acquisition module (3) by wireless telecommunications with
Computer (4) connects.
8. the apparatus according to claim 1, it is characterised in that：The computer (4) includes parameter display circuit and connects
Earth mat health degree decision circuitry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820428328.7U CN207964994U (en) | 2018-03-28 | 2018-03-28 | Grounding net of transformer substation health status detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820428328.7U CN207964994U (en) | 2018-03-28 | 2018-03-28 | Grounding net of transformer substation health status detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207964994U true CN207964994U (en) | 2018-10-12 |
Family
ID=63726505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820428328.7U Active CN207964994U (en) | 2018-03-28 | 2018-03-28 | Grounding net of transformer substation health status detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207964994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111025024A (en) * | 2019-12-20 | 2020-04-17 | 三峡大学 | Method and device for measuring grounding impedance of transformer substation grounding grid based on actual measurement and simulation |
| WO2020164322A1 (en) * | 2019-02-12 | 2020-08-20 | 江苏智臻能源科技有限公司 | Unigram model-based low-voltage user loop impedance estimation method |
-
2018
- 2018-03-28 CN CN201820428328.7U patent/CN207964994U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164322A1 (en) * | 2019-02-12 | 2020-08-20 | 江苏智臻能源科技有限公司 | Unigram model-based low-voltage user loop impedance estimation method |
| CN111025024A (en) * | 2019-12-20 | 2020-04-17 | 三峡大学 | Method and device for measuring grounding impedance of transformer substation grounding grid based on actual measurement and simulation |
| CN111025024B (en) * | 2019-12-20 | 2021-09-28 | 三峡大学 | Method and device for measuring grounding impedance of transformer substation grounding grid based on actual measurement and simulation |
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