CN218939421U - Saturation reactor - Google Patents
Saturation reactor Download PDFInfo
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- CN218939421U CN218939421U CN202223403248.1U CN202223403248U CN218939421U CN 218939421 U CN218939421 U CN 218939421U CN 202223403248 U CN202223403248 U CN 202223403248U CN 218939421 U CN218939421 U CN 218939421U
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- fixing bolt
- support plate
- insulating support
- reactor
- electric field
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- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000005684 electric field Effects 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application discloses a saturation resistor includes: the reactor body comprises a metal clamping piece and an insulating support plate, wherein the insulating support plate is arranged on the metal clamping piece through a fixing bolt, and an equalizing ring for improving electric field distribution of the end face of the fixing bolt is arranged on the outer side of the insulating support plate. The utility model effectively solves the problem of abnormal discharge of the saturation reactor by improving the electric field distribution of the existing saturation reactor.
Description
Technical Field
The application relates to the technical field of reactors, in particular to a saturation reactor.
Background
Along with the gradual development of global energy Internet construction, the construction of a resource-saving and environment-friendly society becomes one of important targets of development and construction of China. The domestic land resources are wide, the energy distribution is unbalanced, and the distance between the power generation side and the power load center is far, so that the extra-high voltage direct current transmission project with the characteristics of long-distance and large-capacity power transmission becomes necessary to develop.
The converter valve is core equipment in extra-high voltage direct current transmission, the saturation reactor is one of key current equipment of the converter valve, the main function of the converter valve is to perform alternating current-direct current power conversion, and the di/dt tolerance of the thyristor is limited when the thyristor is switched on, so that the current rising rate di/dt of the thyristor is limited through the reactor when the thyristor is switched on, the current rising rate of the thyristor is restrained when the thyristor is switched on, and the aim of protecting the thyristor is achieved.
In the long-term operation of engineering, the problem of partial abnormal discharge of individual reactors seriously threatens the safe and stable operation of a converter valve, and therefore, the utility model provides a saturation reactor.
Disclosure of Invention
The embodiment of the application provides a saturable reactor, which can effectively solve the problem of abnormal discharge of the saturable reactor.
In view of this, the present application provides a saturable reactor including: a reactor body;
the reactor body comprises a metal clamping piece and an insulating support plate;
the insulating support plate is mounted on the metal clamping piece through a fixing bolt;
and the outer side of the insulating support plate is provided with a grading ring for improving the electric field distribution of the end face of the fixing bolt.
Optionally, the grading ring is sleeved on the fixing bolt, and the grading ring is fixedly connected with the insulating support plate through the fixing bolt.
Optionally, the number of equalizing rings is one.
Optionally, the number of equalizing rings is a plurality.
From the above technical solutions, the embodiments of the present application have the following advantages: according to the saturation reactor, the equalizing ring used for improving the electric field distribution of the end face of the fixing bolt is arranged on the outer side of the insulating support plate, so that the abnormal discharge phenomenon of the saturation reactor can be effectively solved, and the operation of the converter valve is safer and more reliable.
Drawings
Fig. 1 is a schematic structural diagram of a saturable reactor according to an embodiment of the present application;
wherein, the reference numerals are as follows:
1-metal clamp, 2-insulating support plate, 3-equalizing ring and 4-fixing bolt.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The inventors found that: the corona onset voltage of a metal part is related to its structural shape, air density, humidity, and the degree of contamination. The electric field of the surface of the end part of the metal clamp fixing bolt of the existing saturation resistor protrudes out of the reactor body, dust is easy to adsorb due to the fact that the electric field is concentrated at the end part of the bolt along with the growth of the service life, meanwhile, dust is not easy to remove due to the fact that the metal clamp fixing bolt is arranged inside the insulating support plate, the surface roughness of the metal clamp fixing bolt is obviously increased due to dust particles accumulated on the surface of the bolt, the surface roughness is increased due to the fact that the surface roughness of the metal clamp fixing bolt is increased due to the fact that the surface roughness of the stainless steel bolt is increased, and a discharge phenomenon occurs at the fixing bolt of the insulating support plate and the metal clamp.
An embodiment of a saturable reactor is provided, and refer specifically to fig. 1.
The saturable reactor in this embodiment includes: the reactor body, the reactor body includes metal folder 1 and insulating extension board 2, and insulating extension board 2 passes through fixing bolt 4 to be installed on metal folder 1, and insulating extension board 2 outside is provided with and is used for improving fixing bolt 4 terminal surface electric field distribution's grading ring 3.
It should be noted that: the saturation reactor can effectively solve the abnormal discharge phenomenon of the saturation reactor by arranging the equalizing ring 3 for improving the electric field distribution of the end face of the fixing bolt 4 outside the insulating support plate 2, so that the operation of the converter valve is safer and more reliable.
The first embodiment of the saturable reactor provided in the embodiments of the present application is described above, and the second embodiment of the saturable reactor provided in the embodiments of the present application is described below, with reference to fig. 1.
The saturable reactor in this embodiment includes: the reactor body, the reactor body includes metal folder 1 and insulating extension board 2, and insulating extension board 2 passes through fixing bolt 4 to be installed on metal folder 1, and insulating extension board 2 outside is provided with and is used for improving fixing bolt 4 terminal surface electric field distribution's grading ring 3.
The equalizing ring 3 is sleeved on the fixing bolt 4, and the equalizing ring 3 is fixedly connected with the insulating support plate 2 through the fixing bolt 4.
The number of the equalizing rings 3 may be one or more, and the number of the equalizing rings 3 may be increased or decreased according to the dust accumulation condition of the fixing bolts 4, which is not limited herein.
According to the saturation reactor, the equalizing ring 3 is added at the fixing bolt 4 of the insulating support plate 2 and the metal clamping piece 1, so that electric field distribution at the position can be effectively improved, the problem of abnormal discharge of the saturation reactor is solved, and the operation reliability of the converter valve is improved. And simulation analysis shows that the grading ring 3 effectively improves the problem of electric field concentration of the end face of the fixing bolt 4, and the highest field intensity of the surface of the grading ring 3 of the fixing bolt 4 is reduced to 1.3kV/mm, which is about 30% lower than the field intensity (1.9 kV/mm) of the surface before the mounting.
The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (4)
1. A saturable reactor, comprising: a reactor body;
the reactor body comprises a metal clamping piece and an insulating support plate;
the insulating support plate is mounted on the metal clamping piece through a fixing bolt;
and the outer side of the insulating support plate is provided with a grading ring for improving the electric field distribution of the end face of the fixing bolt.
2. The saturable reactor of claim 1, wherein the equalizing ring is sleeved on the fixing bolt, and the equalizing ring is fixedly connected with the insulating support plate through the fixing bolt.
3. A saturable reactor according to claim 1, wherein the number of grading rings is one.
4. A saturable reactor according to claim 1, wherein the number of grading rings is a plurality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223403248.1U CN218939421U (en) | 2022-12-19 | 2022-12-19 | Saturation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223403248.1U CN218939421U (en) | 2022-12-19 | 2022-12-19 | Saturation reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218939421U true CN218939421U (en) | 2023-04-28 |
Family
ID=86082741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223403248.1U Active CN218939421U (en) | 2022-12-19 | 2022-12-19 | Saturation reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218939421U (en) |
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2022
- 2022-12-19 CN CN202223403248.1U patent/CN218939421U/en active Active
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