CN214796968U - Insulation enhanced protection device - Google Patents
Insulation enhanced protection device Download PDFInfo
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- CN214796968U CN214796968U CN202121324580.1U CN202121324580U CN214796968U CN 214796968 U CN214796968 U CN 214796968U CN 202121324580 U CN202121324580 U CN 202121324580U CN 214796968 U CN214796968 U CN 214796968U
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Abstract
The utility model belongs to a power line protection device, in order to solve the power line, the mode of installing the arrester with series gap is often adopted to protect the insulation safety of the line insulator, when the arrester body bears the overvoltage for too many times, or the deterioration failure occurs due to overlong operation time, the voltage of the system is directly applied to the two ends of the discharge gap, the insulation level of the discharge gap can not meet the insulation requirement between the system and the ground, easily cause the system to have the ground fault, and influence the operation safety of the power system, the insulation enhanced protection device is provided, which comprises the arrester with the series gap and a separation device, the arrester with the series gap comprises the arrester body and the discharge gap which are connected in series, the discharge gap is an insulator supporting discharge gap, a first gap electrode is arranged in the middle of the insulator, a second gap electrode is arranged at the connecting hardware fitting at any end of the insulator, one end of the separation device is electrically connected with the first gap electrode, the other end is connected with the connecting hardware fitting of the insulator or the connecting hardware fitting of the arrester body.
Description
Technical Field
The utility model belongs to power line protector, concretely relates to insulating enhancement mode protector.
Background
In an electric power line, a lightning arrester with a series gap is generally installed to protect the insulation safety of a line insulator, and the lightning arrester with the series gap is composed of a lightning arrester body (namely a gapless lightning arrester) and a discharge gap which are connected in series and then connected in parallel with the line insulator between a high voltage of the line and the ground. However, the problems of the protection method are as follows: when the lightning arrester body bears overvoltage for too many times or the running time is too long to cause deterioration failure, the insulation level of the discharge gap often cannot meet the insulation requirement of the system to the ground, and the gap continues to discharge under the normal power frequency voltage of the system, so that the ground fault of the system can be caused, and the running safety of the power system is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an among the solution power line, the mode protection line insulator's of taking series gap arrester insulating safety is installed in the adoption usually, bears the overvoltage number of times too much when the arrester body, or operating duration overlength leads to the deterioration inefficacy after, and the insulating level in discharge gap often can not satisfy the insulating requirement of system between to ground, causes system ground fault easily, seriously influences the technical problem of power system operation safety, provides an insulating enhancement mode protector.
In order to achieve the above object, the utility model provides a following technical scheme:
an insulation enhancement type protection device comprises a lightning arrester with a series gap, wherein the lightning arrester with the series gap comprises a lightning arrester body and a discharge gap which are connected in series; it is characterized in that the device also comprises a disengaging gear;
the discharge gap is an insulator supporting discharge gap, a first gap electrode of the discharge gap is arranged in the middle of the insulator, and a second gap electrode of the discharge gap is arranged at a connecting hardware fitting at any end of the insulator;
one end of the separation device is connected with the first gap electrode, and the other end of the separation device is connected with the connecting hardware fitting of the insulator or the connecting hardware fitting of the lightning arrester body.
Further, the second gap electrode is arranged on the connecting hardware fitting of the insulator, which is far away from the arrester body;
one end of the separation device is connected with the first gap electrode, and the other end of the separation device is connected with a connecting hardware fitting of the lightning arrester body, wherein the connecting hardware fitting is close to the insulator.
Further, the second gap electrode is arranged on the connecting hardware fitting of the insulator, which is far away from the arrester body;
one end of the separation device is connected with the first gap electrode, and the other end of the separation device is connected with the connecting hardware fitting of the insulator, which is close to the arrester body.
Further, the lightning arrester body is arranged right above the insulator;
the second gap electrode is arranged at the position, close to the connecting hardware fitting of the lightning arrester body, of the insulator;
one end of the separation device is connected with the first gap electrode, and the other end of the separation device is connected with the connecting hardware fitting of the insulator far away from the lightning arrester body.
Further, the insulation level of the insulator is at least 10% higher than the standard specified value of the insulation level of the insulator of the same level.
Further, the 2ms square wave impact resistant current and the 4/10 mus large current impact resistant value of the disengaging device are both larger than or equal to the lightning arrester body.
Further, the discharge gap is plate-shaped, ball-shaped, ring-shaped, or rod-shaped.
Further, the disengaging device is a thermal explosion type disengaging device or a hot melt type disengaging device.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a pair of insulation enhancement mode protector, factor such as too frequently because the action is moved or operating duration is too long when the arrester, cause arrester body degradation inefficacy, and when the withstand voltage level in discharge gap can't bear system power frequency voltage, the system discharges to ground through whole protector, the power frequency electric current that flows can make the disengaging gear constantly generate heat and break away from fast, the one end that the disengaging gear does not link to each other with first clearance electrode will throw off, the disengaging gear breaks away from the back, the part between insulator other end link fitting and the first clearance electrode is inserted, the insulating properties of the electrified part of system between to ground is strengthened, it can not take place ground fault to have ensured the system.
2. The utility model provides a multiple structural style can be different according to the structure that sets up of arrester body and insulator, selects according to on-the-spot actual demand. Especially, when the arrester body sets up directly over the insulator, the mode of setting up of disengaging gear and discharge gap can avoid when disengaging gear breaks away from, and the wire leads to other part overlap joints, causes the potential safety hazard.
3. The utility model discloses well insulator's insulation level is higher than same level insulator, has further guaranteed whole protector's safeguard function.
4. The utility model discloses well disengaging device has the impulse current endurance who matches with the arrester for normal protection action can not cause disengaging device's breaking away from, has improved whole protector's stability.
5. The utility model discloses well discharge gap and separation device all can adopt multiple structural style, make the utility model discloses protector's suitability is wider, can adapt to different installation and use scenes.
Drawings
Fig. 1 is a schematic structural view of a separation device before and after separation according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a second release device of the present invention before and after release;
fig. 3 is a schematic structural view of a third release device according to an embodiment of the present invention before and after release;
fig. 4 is a schematic structural view of the fourth release device of the embodiment of the present invention before and after release;
fig. 5 is a schematic structural view of the fifth release device of the embodiment of the present invention before and after release;
fig. 6 is a schematic structural view of the sixth release device of the embodiment of the present invention before and after release;
fig. 7 is a schematic structural view of the seventh separation device of the present invention before and after separation.
The lightning arrester comprises a lightning arrester body 1, a discharge gap 2, a first gap electrode 201, a second gap electrode 202, an insulator 3, a connecting hardware fitting 4 and a disconnecting device 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are not limitations of the present invention.
The utility model provides an insulating enhancement mode protector has mainly solved current circuit and has damaged the back with taking series gap arrester body (gapless arrester promptly), and the insulating level of discharge gap can not satisfy the insulating requirement of system between to the ground, and the clearance continues to take place discharge phenomenon under the normal power frequency voltage of system, can cause system ground fault, seriously influences the problem of electric power system operation safety.
In fig. 1 to 7, the broken line portion indicates the state and connection relationship after the disengagement of the disengagement device 5, and the corresponding solid line portion indicates the state and connection relationship before disengagement.
Example one
As shown in fig. 1, an insulation enhanced type protection device comprises a lightning arrester with a series gap and a separation device 5, the lightning arrester with the series gap is a lightning arrester body 1 and a discharge gap 2 which are connected in series, wherein the discharge gap 2 is an insulator supporting discharge gap, that is, an insulator 3 is used as a support for the discharge gap 2, the lightning arrester body 1 and the insulator 3 are arranged perpendicular to each other and connected through a connecting fitting 4, a first gap electrode 201 of the discharge gap 2 is arranged in the middle of the insulator 3, a second gap electrode 202 is arranged at the connecting fitting 4 of the insulator 3 at one end far from the lightning arrester body 1, one end of the separation device 5 is electrically connected with the first gap electrode 201 through a flexible wire, the other end is connected to the connecting fitting 4 of the lightning arrester body 1 close to the insulator 3, after the separation device 5 is separated, only one end is still electrically connected with the first gap electrode 201 and naturally hangs down, the other end is still connected to the connecting hardware 4 of the lightning arrester body 1 close to the insulator 3. In the first embodiment, the discharge gap 2 is ring-shaped, and the detaching device 5 is a thermal explosion type detacher. The insulation level of the insulator 3 is 10% higher than the standard specified value of the insulation level of the insulator of the same level, and the average of the impact current resistance values such as the 2ms square wave impact resistance current and the 4/10 mus large current impact resistance value of the disconnecting device 5 is larger than that of the arrester body 1.
Example two
As shown in fig. 2, compared with the first embodiment of the present invention, the difference lies in that in the second embodiment, one end of the separation device 5 is electrically connected to the first gap electrode 201 through the flexible conductor, the other end is connected to the link fitting 4 near one end of the lightning arrester body 1 through the insulator 3, the separation device 5 still keeps one end electrically connected to the first gap electrode 201 through the link conductor and droops naturally after separating from, and the other end is still connected to the link fitting 4 near one end of the lightning arrester body 1 through the insulator 3. The insulation level of the insulator 3 is 15% higher than the standard specified value of the insulation level of the insulator of the same level, and the surge current withstand level such as the 2ms square wave surge withstand current and the 4/10 mus large current surge withstand value of the disconnector 5 is equal to that of the arrester body 1.
EXAMPLE III
As shown in fig. 3, the difference between the third embodiment and the second embodiment is that the discharge gap 2 in the third embodiment is a rod-shaped discharge gap, the insulation level of the insulator 3 is 20% higher than the standard predetermined value of the insulation level of the same-grade insulator, and the surge current resistance level of the disconnector 5, such as the 2ms square wave surge current resistance and the 4/10 μ s large current surge resistance, is higher than that of the surge arrester main body 1.
Example four
As shown in fig. 4, the difference from the third embodiment is that the discharge gap 2 in the fourth embodiment is a spherical discharge gap, and the release device 5 is a thermal fusion type release device.
EXAMPLE five
As shown in fig. 5, the difference from the second embodiment is that since there is no difference in connection between the two ends of the disconnecting device 5, in the fifth embodiment, compared with the second embodiment, the connection direction of the disconnecting device 5 is changed, so that when the disconnecting device 5 is disconnected, one end of the disconnecting device 5 is still connected to the connecting fitting 4 of the insulator 3 close to the arrester body 1 through the connecting wire, and the other end is disconnected from the first gap electrode 201, and the disconnecting device is made to naturally droop.
EXAMPLE six
Referring to fig. 6, an insulation enhancement type protection device comprises a lightning arrester with a series gap and a separation device 5, the lightning arrester with the series gap is a lightning arrester body 1 and a discharge gap 2 connected in series, wherein the discharge gap 2 is an insulator supporting the discharge gap, that is, an insulator 3 is used as a support for the discharge gap 2, the lightning arrester body 1 and the insulator 3 are coaxially arranged, the lightning arrester body 1 is positioned right above the insulator 3 and connected through a connecting fitting 4, a first gap electrode 201 of the discharge gap 2 is arranged in the middle of the insulator 3, a second gap electrode 202 is arranged at the connecting fitting 4 of the insulator 3 near one end of the lightning arrester body 1, one end of the separation device 5 is electrically connected with the first gap electrode 201, the other end is connected to the connecting fitting 4 of the insulator 3 far from the lightning arrester body 1 through a flexible lead, only one end is still electrically connected with the first gap electrode 201 after the separation device 5 is separated, the other end of the separation device naturally hangs down, and the structure form in the embodiment can avoid the potential safety hazard caused by overlapping with other parts when the separation device 5 is separated.
EXAMPLE seven
As shown in fig. 7, the seventh embodiment is different from the fifth embodiment in that the insulator 3 is connected to the lightning arrester body 1 through the connecting hardware 4, and the insulator 3 is located right above the lightning arrester body 1, and the seventh embodiment is different from the fifth embodiment in that the setting included angle between the insulator 3 and the lightning arrester body 1 is different.
The utility model discloses an in other embodiments, the contained angle of being connected of insulator 3 and arrester body 1 can be adjusted at will, in addition, the hookup location of disengaging gear 5 also can be adjusted according to discharge gap 2, insulator 3, the mode that sets up of arrester body 1. The discharge gap 2 may also be a plate type or other discharge gap, and may be selected according to actual needs.
The utility model discloses a lightning arrester body 1 among the protector, 2 series connection in discharge gap that disconnector device 5 and insulator supported, the distance of two clearance electrodes in discharge gap 2 can require to pass through the experiment according to the clearance discharge voltage and confirm, the more ordinary insulator of insulation level of insulator 3 supports the used insulator of clearance lightning arrester height, the one end of disconnector device 5 is connected with the first clearance electrode 201 electricity that is located insulator 3 middle part through mild wire, with the insulator 3 not with the part short circuit between the link fitting 4 that disconnector device 5 is connected and the first clearance electrode 201. Under the normal condition, because the isolation of discharge gap 2, the arrester does not move, no electric current flows in arrester body 1 and the separation device 5, normal operating to the system does not have the influence, when the system takes place the overvoltage, discharge gap 2 moves, overvoltage energy flows into the ground through separation device 5 and arrester body 1, because separation device 5 has the impulse current who matches with arrester body 1 and tolerates the ability, consequently, normal protection action can not cause its separation, arrester body 1 limits the amplitude of overvoltage within the safe range that can bear by the protection equipment. When the arrester is because the action is too frequent, or operating duration is too long and so on factor, cause 1 deterioration of arrester body to become invalid, and when the withstand voltage level of discharge gap 2 can't bear system power frequency voltage, the system discharges to ground through whole arrester, the power frequency electric current that flows can make disengaging gear 5 constantly generate heat and break away from fast, disengaging gear 5 breaks away from the back, 3 other ends of insulator link fitting 4 and the part between the first gap electrode 201 are inserted, the insulating properties of the electrified part of system between to ground are strengthened, ensure that the system can not take place ground fault.
The above is only the embodiment of the present invention, and is not the limitation of the protection scope of the present invention, all the equivalent structure changes made in the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. An insulation enhancement type protection device comprises a lightning arrester with a series gap, wherein the lightning arrester with the series gap comprises a lightning arrester body (1) and a discharge gap (2) which are connected in series; the method is characterized in that: also comprises a disengaging device (5);
the discharge gap (2) is an insulator supporting discharge gap, a first gap electrode (201) of the discharge gap is arranged in the middle of the insulator (3), and a second gap electrode (202) of the discharge gap is arranged at a connecting hardware fitting (4) at any end of the insulator (3);
one end of the separation device (5) is connected with the first gap electrode (201), and the other end of the separation device is connected with the connecting fitting (4) of the insulator (3) or the connecting fitting (4) of the lightning arrester body (1).
2. An insulation-reinforced shield as recited in claim 1, wherein:
the second gap electrode (202) is arranged on the connecting hardware fitting (4) of the insulator (3) far away from the lightning arrester body (1);
one end of the separation device (5) is connected with the first gap electrode (201), and the other end of the separation device is connected with the connecting hardware fitting (4) of the lightning arrester body (1) close to the insulator (3).
3. An insulation-reinforced shield as recited in claim 1, wherein:
the second gap electrode (202) is arranged on the connecting hardware fitting (4) of the insulator (3) far away from the lightning arrester body (1);
one end of the separation device (5) is connected with the first gap electrode (201), and the other end of the separation device is connected with the connecting hardware fitting (4) of the insulator (3) close to the lightning arrester body (1).
4. An insulation-reinforced shield as recited in claim 1, wherein: the lightning arrester body (1) is arranged right above the insulator (3);
the second gap electrode (202) is arranged at the position, close to the connecting hardware fitting (4) of the lightning arrester body (1), of the insulator (3);
one end of the separation device (5) is connected with the first gap electrode (201), and the other end of the separation device is connected with the connecting hardware fitting (4) of the insulator (3) far away from the lightning arrester body (1).
5. An insulation-reinforced shield as claimed in any one of claims 1 to 4, wherein: the insulation level of the insulator (3) is at least 10% higher than the standard specified value of the insulation level of the same-level insulator.
6. An insulation-enhanced shielding device according to claim 5, wherein: the 2ms square wave impact resistant current and the 4/10 mus large current impact resistant value of the disengaging device (5) are both larger than or equal to the lightning arrester body (1).
7. An insulation-enhanced shielding device according to claim 6, wherein: the discharge gap (2) is plate-shaped, spherical, annular or rod-shaped.
8. An insulation-enhanced shielding device according to claim 7, wherein: the disengaging device (5) is a thermal explosion type disengaging device or a hot melting type disengaging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121324580.1U CN214796968U (en) | 2021-06-15 | 2021-06-15 | Insulation enhanced protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121324580.1U CN214796968U (en) | 2021-06-15 | 2021-06-15 | Insulation enhanced protection device |
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| Publication Number | Publication Date |
|---|---|
| CN214796968U true CN214796968U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121324580.1U Active CN214796968U (en) | 2021-06-15 | 2021-06-15 | Insulation enhanced protection device |
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| Country | Link |
|---|---|
| CN (1) | CN214796968U (en) |
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2021
- 2021-06-15 CN CN202121324580.1U patent/CN214796968U/en active Active
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