CN203398533U - Integrated grounding system - Google Patents
Integrated grounding system Download PDFInfo
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- CN203398533U CN203398533U CN201320400859.2U CN201320400859U CN203398533U CN 203398533 U CN203398533 U CN 203398533U CN 201320400859 U CN201320400859 U CN 201320400859U CN 203398533 U CN203398533 U CN 203398533U
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Abstract
The utility model discloses an integrated grounding system which includes a power plant and an integrated grounding grid, wherein the power plant is connected with the integrated grounding grid, and a grounding electrode is connected with the integrated grounding grid. The power plant includes an anti-interference device and an interference-prone device, and the interference-prone device is influenced by a magnetic field, a ground potential difference and mutual interference among large grounding systems; the anti-interference device is directly connected with the integrated grounding grid for grounding; and the interference-prone device is connected with the integrated grounding grid for grounding through a grounding transfer box. The simple structure is used to eliminate the interference; the workload of eliminating the interference is avoided; the grounding grid is not provided additionally, and the grounding electrode of the large grounding grid is directly used to access the interference-prone source; and the mutual interference in the large grounding grid is avoided.
Description
Technical field
The utility model relates to Gas Turbine Generating Units power station technology field, especially, relates to a kind of joint grounding system.
Background technology
The grounding system adopting in Gas Turbine Generating Units power station is joint grounding system, i.e. working earthing, protective earthing and lightning protection are merged into a grounding system.The metal shell of the signal circuit in power station, screen, intrinsic safety ground connection, electric device, neutral ground, direct current ground and lightning rod etc. connect into large ground network nearby.This area is often divided into earthing device and is disturbed device and means for anti-jamming two classes.Wherein signal circuit, screen, intrinsic safety ground connection and direct current ground are easily subject to impact and the interference each other of people's grounding system of magnetic field, epd, cause in power station and control and the very difficult assurance of certainty of measurement, belong to and are disturbed earthing device.
At present, grounding connection in power station, near ground network equipment end accesses nearby.There is just to disturb mobile grounding position targetedly, until disturb, eliminate.Special circumstances, also need again to beat earth electrode, again make ground network and eliminate interference.Be vulnerable to disturb signal circuit, screen, intrinsic safety ground connection and direct current, affect control and measurement precision, after disturb in a certain loop, for this, disturb loop to change ground connection access point, repeatedly, iterative earthing, until find, do not have noisy earth point, simultaneously in the situation that really not getting rid of interference, in the situation that condition allows again, then do an earth electrode meeting the demands and carry out ground connection, reach and get rid of the object of disturbing.The mode that solves like this magnetic field, epd impact is quite loaded down with trivial details, gets rid of this interferences difficulty, workload is large, complete in ceaselessly trying to reach the object of ELIMINATION OF ITS INTERFERENCE.In serious situation, also need separately to do earth electrode and meet the demands, and bring great damage for circuit, and security incident easily occurs.
Therefore, developing a kind of novel joint grounding system has been technical problem urgently to be resolved hurrily.
Utility model content
The utility model object is to provide a kind of joint grounding system, to solve impact and the interference each other of large grounding system of magnetic field, epd, causes the technical problem of control and certainty of measurement etc. in power station.
For achieving the above object, according to Yi Ge of the present utility model aspect, a kind of joint grounding system is provided, comprise power station and union ground grid, in power station access union ground grid, joint grounding is connected to earth electrode on the net, power station comprises and the impact of means for anti-jamming He Shou magnetic field, epd and the device that is disturbed that is subject to phase mutual interference between large grounding system, means for anti-jamming is directly linked into union ground grid and carries out ground connection, is disturbed device and by ground connection transfer box, is linked into union ground grid and carries out ground connection.Ground connection very imbeds the earth so that the combination of the conductor being connected with the earth or several conductors.This area is often divided into earthing device and is disturbed device and means for anti-jamming two classes.Being disturbed device is the device that is easily subject to magnetic field and epd impact and the interference each other of joint grounding system.Means for anti-jamming is the device of the impact of Bu Shou magnetic field and epd and the interference each other of joint grounding system with respect to being disturbed device, or does not affect the device of control and certainty of measurement data in the power station in.Ground connection transfer box is the device that collects the ground path that is disturbed device, the ground path that directly these is disturbed to device imports to the intermediate transit device of the earth, the ground path that is disturbed device is no longer linked in union ground grid, eliminates the possibility that produces interference potential.
Further, ground connection transfer box is directly connected on earth electrode.
Further, be disturbed device and comprise at least one in signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path or direct current ground ground path.Signal circuit ground path refers to that signal relay or operating mechanism are to central signal (signal such as sound, light, board) Pan loop.Signal shielding layer ground path is for the protective layer ground path of radiation proof, anti-electronic jamming in cable circuit, machine room, power station.Intrinsic safety ground path is the energy in electric loop coordinate the structural design of electric equipment by restriction, make in loop, all can not produce the ground path of the point that reaches ignition source requirement under normal and accident conditions, in place of safety, guard grating is set, guard grating loop is below intrinsic safety equipment.The ground path of the common reference zero potential that direct current ground ground path is Digital Logical Circuits, i.e. ground path logically, logical circuit general work level is low, and signal amplitude is little, is easily subject to epd and external magnetic field and disturbs.
Further, at least one in signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path or direct current ground ground path is connected on ground connection transfer box by cable respectively, by ground connection transfer box, carries out ground connection.
Further, ground connection transfer box is arranged at least one the earth electrode with regard near point in signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path or direct current ground ground path.
Further, means for anti-jamming comprises at least one in metal shell ground path, lightning rod ground path or the unit stand ground path of neutral ground circuit, electric device.In the winding of generator, have a bit with outside each terminals between the point that equates of absolute value of voltage be called central point, neutral ground circuit is each step voltage neutral ground circuit circuit of transformer in electric substation.The metal shell ground path of electric device is shell safety ground circuit; Lightning rod ground path is for avoiding the protective earthing device being struck by lightning in protection power station; Unit stand ground path is stand safety ground circuit
Further, at least one in the metal shell ground path of neutral ground circuit, electric device, lightning rod ground path or unit stand ground path is directly connected to union ground grid by cable respectively and carries out ground connection.
Further, in ground connection transfer box, be provided with and adjust unsymmetrical current power factor compensation device or filter, on a plurality of ground paths in ground connection transfer box, be respectively arranged with and adjust unsymmetrical current power factor compensation device or filter, or collecting on circuit of a plurality of ground paths be provided with and adjust unsymmetrical current power factor compensation device or filter in ground connection transfer box.
The utlity model has following beneficial effect
By simple structure setting, just eliminate interference, exempted because eliminating and disturbed the workload of bringing, without separately doing ground network, directly utilized the large Grounding utmost point to access easy interference source, avoided phase mutual interference in large ground network.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings
Fig. 1 is one of the structural representation of the joint grounding system of the utility model preferred embodiment;
Fig. 2 be the utility model preferred embodiment joint grounding system structural representation two.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Fig. 1 is one of the structural representation of the joint grounding system of the utility model preferred embodiment, as shown in Figure 1, joint grounding system, comprise power station and union ground grid, in power station access union ground grid, joint grounding is connected to earth electrode on the net, and power station comprises and is disturbed device and means for anti-jamming, means for anti-jamming is directly linked into union ground grid and carries out ground connection, is disturbed device and by ground connection transfer box, is linked into union ground grid and carries out ground connection.By simple structure setting, just eliminate interference, exempted because eliminating and disturbed the workload of bringing, without separately doing ground network, directly utilized the large Grounding utmost point to access easy interference source, avoided phase mutual interference in large ground network.
Preferably, ground connection transfer box is directly connected on earth electrode.Be disturbed device and can comprise signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path and direct current ground ground path.Signal circuit ground path refers to that signal relay or operating mechanism are to the loop ground path of central signaling panel; Signal shielding layer ground path is for the protective layer ground path of radiation proof, anti-electronic jamming in power station; Intrinsic safety ground path is the energy in electric loop coordinate the structural design of electric equipment by restriction, makes in loop, all can not produce the ground path of the point that reaches ignition source requirement under normal and accident conditions; The ground path of the common reference zero potential that direct current ground ground path is Digital Logical Circuits, i.e. ground path logically.
Preferably, signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path and direct current ground ground path are connected on ground connection transfer box by cable respectively, by ground connection transfer box, carry out ground connection.Ground connection transfer box is arranged on the common earth electrode with regard near point of signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path and direct current ground ground path.Means for anti-jamming can comprise metal shell ground path, lightning rod ground path and the unit stand ground path of neutral ground circuit, electric device, and neutral ground circuit is each step voltage neutral ground circuit circuit of transformer in electric substation; The metal shell ground path of electric device is shell safety ground circuit; Lightning rod ground path is for avoiding the protective earthing device being struck by lightning in protection power station; Unit stand ground path is stand safety ground circuit.The metal shell ground path of neutral ground circuit, electric device, lightning rod ground path and unit stand ground path are directly connected to union ground grid by cable respectively and carry out ground connection.In ground connection transfer box, be provided with and adjust unsymmetrical current power factor compensation device or filter, on a plurality of ground paths in ground connection transfer box, be respectively arranged with and adjust unsymmetrical current power factor compensation device or filter, or collecting on circuit of a plurality of ground paths be provided with and adjust unsymmetrical current power factor compensation device or filter in ground connection transfer box.Be disturbed device by directly directly accessing the earth by ground connection transfer box with regard near point, exempted electric current and sneaked into and in union ground grid, form interference potential, eliminate electric current and in union ground grid, flow and form interference potential possibility; Grounding plate is directly accessed in the source that is disturbed, and has avoided the impact of epd, has avoided mutual formation loop, thereby has effectively got rid of interference; In ground connection transfer box, be provided with and adjust unsymmetrical current power factor compensation device or filter, can effectively eliminate and disturb being disturbed the information of device.
Fig. 2 be the utility model preferred embodiment joint grounding system structural representation two; as shown in Figure 2; joint grounding system comprises power station and union ground grid; in power station access union ground grid; joint grounding is connected to earth electrode on the net; power station comprises: the impact of means for anti-jamming He Shou magnetic field, epd and the device that is disturbed that is subject to phase mutual interference between large grounding system; means for anti-jamming is directly linked into union ground grid and carries out ground connection, is disturbed device and by ground connection transfer box, is linked into union ground grid and carries out ground connection; Ground connection transfer box is directly connected on earth electrode; Being disturbed device comprises: signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path and direct current ground ground path, and signal circuit ground path refers to that signal relay or operating mechanism are to the loop ground path of central signaling panel; Signal shielding layer ground path is for the protective layer ground path of radiation proof, anti-electronic jamming in power station; Intrinsic safety ground path is the energy in electric loop coordinate the structural design of electric equipment to make can not produce in the middle part of loop to reach the ground path of the point that ignition source requires under normal and accident conditions by restriction; The ground path of the common reference zero potential that direct current ground ground path is Digital Logical Circuits, i.e. ground path logically; At least one in signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path, direct current ground ground path is connected on ground connection transfer box by cable, by ground connection transfer box, carries out ground connection; Ground connection transfer box is arranged at least one the earth electrode with regard near point in signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path, direct current ground ground path; Means for anti-jamming comprises metal shell ground path, lightning rod ground path and the unit stand ground path of neutral ground circuit, electric device, and neutral ground circuit is each step voltage neutral ground circuit circuit of transformer in electric substation; The metal shell ground path of electric device is shell safety ground circuit; Lightning rod ground path is for avoiding the protective earthing device being struck by lightning in protection power station; Unit stand ground path is stand safety ground circuit; The metal shell ground path of neutral ground circuit, electric device, lightning rod ground path and unit stand ground path are directly connected to union ground grid by cable and carry out ground connection.
Preferably; during enforcement; in ground network, an earth electrode is selected in appropriate location, by this earth electrode, directly draws a ground connection transfer box, and signal circuit ground path ground connection, intrinsic safety ground path, bonding and the DC earthing easily disturbed access this ground connection transfer box by cable respectively and carry out ground connection; Other equipment grounds directly just enter earth electrode and carry out ground connection.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a joint grounding system, comprises power station and union ground grid,
Described power station is accessed in described union ground grid,
Described joint grounding is connected to earth electrode on the net,
It is characterized in that,
The device that is disturbed that described power station comprises the impact of means for anti-jamming He Shou magnetic field, epd and is subject to phase mutual interference between large grounding system,
Described means for anti-jamming is directly linked into described union ground grid and carries out ground connection,
The described device that is disturbed is linked into union ground grid by ground connection transfer box and carries out ground connection.
2. joint grounding system according to claim 1, is characterized in that, described ground connection transfer box is directly connected on described earth electrode.
3. joint grounding system according to claim 2, is characterized in that,
The described device that is disturbed comprises: at least one in signal circuit ground path, signal shielding layer ground path, intrinsic safety ground path, direct current ground ground path,
Described signal circuit ground path refers to that signal relay or operating mechanism are to the loop ground path of central signaling panel;
Described signal shielding layer ground path is for the protective layer ground path of radiation proof, anti-electronic jamming in power station;
Described intrinsic safety ground path is the energy in electric loop coordinate the structural design of electric equipment all can not produce in making to go the same way to reach the ground path of the point that ignition source requires under normal and accident conditions by restriction;
The ground path of the common reference zero potential that described direct current ground ground path is Digital Logical Circuits, i.e. ground path logically.
4. joint grounding system according to claim 3, it is characterized in that, at least one in described signal circuit ground path, described signal shielding layer ground path, described intrinsic safety ground path, described direct current ground ground path is connected on described ground connection transfer box by cable, by described ground connection transfer box, carries out ground connection.
5. joint grounding system according to claim 4, it is characterized in that, described ground connection transfer box is arranged at least one the described earth electrode with regard near point in described signal circuit ground path, described signal shielding layer ground path, described intrinsic safety ground path, described direct current ground ground path.
6. according to the joint grounding system described in any one in claim 1 to 5, it is characterized in that,
Described means for anti-jamming comprises at least one in the metal shell ground path, lightning rod ground path, unit stand ground path of neutral ground circuit, electric device,
Described neutral ground circuit is each step voltage neutral ground circuit circuit of transformer in electric substation;
The metal shell ground path of described electric device is shell safety ground circuit;
Described lightning rod ground path is for avoiding the protective earthing device being struck by lightning in protection power station;
Described unit stand ground path is stand safety ground circuit.
7. joint grounding system according to claim 6, it is characterized in that, at least one in the metal shell ground path of described neutral ground circuit, described electric device, described lightning rod ground path, described unit stand ground path is directly connected to described union ground grid by cable and carries out ground connection.
8. according to the joint grounding system described in any one in claim 1 to 5, it is characterized in that,
In described ground connection transfer box, be provided with and adjust unsymmetrical current power factor compensation device or filter,
On a plurality of ground paths in described ground connection transfer box, be respectively arranged with described adjustment unsymmetrical current power factor compensation device or described filter,
Or collecting of a plurality of ground paths is provided with described adjustment unsymmetrical current power factor compensation device or described filter on circuit in described ground connection transfer box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320400859.2U CN203398533U (en) | 2013-07-05 | 2013-07-05 | Integrated grounding system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320400859.2U CN203398533U (en) | 2013-07-05 | 2013-07-05 | Integrated grounding system |
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| CN203398533U true CN203398533U (en) | 2014-01-15 |
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| CN201320400859.2U Expired - Fee Related CN203398533U (en) | 2013-07-05 | 2013-07-05 | Integrated grounding system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275078A (en) * | 2019-07-16 | 2019-09-24 | 国网江苏省电力有限公司电力科学研究院 | Substation secondary cable earth-return harasses differentiating method, system and storage medium |
| CN114673957A (en) * | 2022-04-11 | 2022-06-28 | 扬德电气集团有限公司 | Lightning protection intelligent street lamp with quick-release assembly and implementation method thereof |
-
2013
- 2013-07-05 CN CN201320400859.2U patent/CN203398533U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275078A (en) * | 2019-07-16 | 2019-09-24 | 国网江苏省电力有限公司电力科学研究院 | Substation secondary cable earth-return harasses differentiating method, system and storage medium |
| CN110275078B (en) * | 2019-07-16 | 2021-10-15 | 国网江苏省电力有限公司电力科学研究院 | Method and system for distinguishing secondary cable ground loop disturbance of transformer substation and storage medium |
| CN114673957A (en) * | 2022-04-11 | 2022-06-28 | 扬德电气集团有限公司 | Lightning protection intelligent street lamp with quick-release assembly and implementation method thereof |
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| Date | Code | Title | Description |
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| 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: 20140115 Termination date: 20180705 |
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| CF01 | Termination of patent right due to non-payment of annual fee |