CN211626561U - Lightning arrester monitoring system for electric power system - Google Patents
Lightning arrester monitoring system for electric power system Download PDFInfo
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- CN211626561U CN211626561U CN202020589870.8U CN202020589870U CN211626561U CN 211626561 U CN211626561 U CN 211626561U CN 202020589870 U CN202020589870 U CN 202020589870U CN 211626561 U CN211626561 U CN 211626561U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 81
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 238000009434 installation Methods 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000008054 signal transmission Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
The utility model discloses an arrester monitoring system for electric power system for the arrester monitoring, include: the lightning arrester comprises a lightning arrester body, wherein gas is pre-filled in the lightning arrester body, so that the pressure in the lightning arrester body is greater than the pressure outside the lightning arrester body; the pressure monitoring unit is connected with the lightning arrester body in a sealing mode through a self-sealing valve; the lightning arrester body is supported by the lightning arrester support; the current monitoring unit is fixed through the lightning arrester bracket and is grounded through the lightning arrester bracket; the current monitoring unit is electrically connected with the bottom of the lightning arrester body. The utility model discloses make full use of arrester's structure for the monitoring unit can be installed steadily.
Description
Technical Field
The utility model relates to an arrester monitoring system for electric power system specifically is used for the performance monitoring of arrester.
Background
The zinc oxide arrester is an important protective electrical appliance for limiting overvoltage, is known for its excellent nonlinear characteristic and large current capacity, and compared with the traditional arrester, it has the advantages of low residual voltage after overvoltage, no follow current, good steep wave response characteristic and large current capacity, so that its application in modern power systems is gradually increased.
Through carrying out statistical analysis to the condition that breaks down in the past arrester, the sealing performance that most be the arrester descends, makes inside outside moisture invade the arrester, causes the inside resistance card of arrester to wet gradually, and leakage current increases, causes the arrester trouble.
At present, the online monitoring method for the lightning arrester mainly focuses on measuring the electrical parameters and the heating condition of the lightning arrester. The on-line monitoring of the lightning arrester is additionally provided with a monitoring device with counting and leakage current measurement functions. However, in actual operation, considering that the phenomenon of the reduction of the sealing performance always precedes the phenomenon of the increase of the leakage current, the performance reduction of the lightning arrester cannot be found in advance through the leakage current, the performance of the lightning arrester cannot be completely judged only through the leakage current, and other electrical parameters need to be measured through infrared temperature measurement or power failure to be comprehensively judged.
The detection of the air pressure is mainly that an air pressure meter is installed on site for detection under the condition of power failure. This way there is a possibility to break the sealing properties of the arrester. Meanwhile, in the prior art, when the lightning arrester is monitored, the measuring equipment is directly placed on the ground without fixed installation, and on one hand, the measuring equipment is not easy to place for the lightning arrester with a higher erection position; on the other hand, when the environment is severe, the performance parameters of the lightning arrester are difficult to detect in place.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to among the above-mentioned prior art discloses an arrester monitoring system for electric power system, its monitoring that can realize the arrester to and monitoring facilities's fixed mounting.
The utility model provides a technical scheme that its technical problem adopted is:
an arrester monitoring system for an electrical power system, comprising:
the lightning arrester comprises a lightning arrester body, wherein gas is pre-filled in the lightning arrester body, so that the pressure in the lightning arrester body is greater than the pressure outside the lightning arrester body;
the pressure monitoring unit is connected with the lightning arrester body in a sealing mode through a self-sealing valve;
the lightning arrester body is supported by the lightning arrester support;
the current monitoring unit is fixed through the lightning arrester bracket and is grounded through the lightning arrester bracket;
the current monitoring unit is electrically connected with the bottom of the lightning arrester body.
As a preferred embodiment of the utility model, be equipped with equipment gas pocket and installation gas pocket on the self-sealing valve respectively, arrester body and pressure monitoring unit respectively through equipment gas pocket and installation gas pocket with from sealing valve sealing connection.
As a preferred embodiment of the utility model, arrester body lateral part is equipped with the gas charging connection, through equipment gas pocket and gas charging connection perpendicular connection between self-sealing valve and the arrester body.
As a preferred embodiment of the present invention, follow the installation direction of the self-sealing valve, the equipment air hole and the installation air hole are respectively arranged at both ends of the self-sealing valve.
As an embodiment of the present invention, the self-sealing valve is further provided with an inflation hole perpendicular to the mounting direction of the self-sealing valve, and the inflation hole is blocked by the plug in the normal state.
As a preferred embodiment of the utility model, still include signal transmission device, signal transmission device includes photoelectric conversion unit, transmission unit and host computer, pressure monitoring unit and current monitoring unit respectively with photoelectric conversion unit connects, photoelectric conversion unit pass through transmission unit with the host computer is connected.
As a preferred embodiment of the present invention, the intelligent electronic device further comprises an IED cabinet, wherein the photoelectric conversion unit is fixed in the IED cabinet through a fixing and installing member.
As a preferred embodiment of the present invention, the transmission unit is one of a light transmission unit, a serial communication unit or a parallel communication unit.
As a preferred embodiment of the utility model, the arrester body lateral part outwards extends, forms the mount, the current monitoring unit pass through the fixed back of mount, with arrester body bottom electrical connection.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses in, do not confine to the sealed and gas filled effect of realization arrester body among the prior art from the sealing valve, but in use further extends, realizes through self-sealing valve for the effect of pressure monitoring unit seal on the arrester body makes electrical equipment's pressure monitoring unit can install, and entire system structure is succinct more, compact structure.
The utility model discloses in, when the arrester is prefabricated, can carry out prefabricated installation in advance with pressure detection unit through proclaiming oneself the valve, during the field usage, the assembling process is faster, and efficiency is higher.
The utility model discloses in, in order to realize the further installation of arrester, add the arrester support, simultaneously, install the current monitoring unit on the arrester support, improved the stability of current monitoring unit. If the lightning arrester is directly placed on the ground, the current monitoring unit is easily disconnected with the lightning arrester or even damaged when the weather is bad or the system moves; when the current monitoring device is used, the stability is poor, the sensitivity and the like of the current monitoring unit are easily influenced, and the monitored data are directly influenced.
The utility model discloses in, with the monitoring facilities of electric pressure and electric current, install through the structure of arrester body, need not to increase too much mounting structure, practiced thrift the cost, improved installation availability factor.
Drawings
Fig. 1 is a schematic structural diagram of an arrester monitoring system for an electric power system according to the present invention;
fig. 2 is a cross-sectional view of an arrester monitoring system for an electric power system according to the present invention;
fig. 3 is a schematic structural diagram of the self-sealing valve provided by the present invention;
fig. 4 is a left side view of the self-sealing valve provided by the present invention;
fig. 5 is the utility model provides a working principle diagram of an arrester monitoring system for electric power system.
Description of reference numerals:
1. a lightning arrester body; 101. a lightning arrester group; 2. a connecting pipe; 3. a self-sealing valve; 301. an equipment air hole; 302. installing an air hole; 303. inflating the air holes; 304. a plug; 4. a pressure monitoring unit; 5. connecting a lead; 6. a current monitoring unit; 7. a fixed mount; 8. a lightning arrester support; 9. a lightning arrester housing; 10. resistance cards; 11. an IED cabinet; 12. a transmission unit; 13. a photoelectric conversion unit; 14. and (4) an upper computer.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
Example 1
In this embodiment, a main component structure of an arrester monitoring system for an electric power system is mainly described.
Referring to fig. 1-2, in the present embodiment, an arrester monitoring system for an electric power system includes:
the lightning arrester comprises a lightning arrester body 1, wherein gas is pre-charged in the lightning arrester body 1, so that the pressure in the lightning arrester body 1 is greater than the pressure outside the lightning arrester body 1;
the pressure monitoring unit 4 is connected with the lightning arrester body 1 in a sealing mode through a self-sealing valve 3;
the lightning arrester comprises a lightning arrester support 8, wherein the lightning arrester body 1 is supported by the lightning arrester support 8;
the current monitoring unit 6 is fixed through the lightning arrester support 8, and is grounded through the lightning arrester support 8;
the current monitoring unit 6 is electrically connected with the bottom of the lightning arrester body 1.
Specifically, in this embodiment, the arrester body 1 includes a plurality of arrester groups 101, and the arrester groups 101 are connected by the connecting pipe 2; and the circulation of the gas inside the arrester group 101 is realized through the connecting pipes 2 among the arrester groups 101.
Referring to fig. 2, each arrester group 101 includes an arrester casing 9 and a plurality of resistor discs 10, the resistor discs 10 are sequentially arranged in parallel to form a resistor disc group, and the arrester casing 9 is sleeved outside the resistor disc group.
In the embodiment, when the lightning arrester body 1 is produced, the lightning arrester body is filled with gas with certain pressure; during installation, the lightning arrester body 1 is installed on the lightning arrester support 8, the self-sealing valve 3 is arranged at the lower end of the lightning arrester body in advance, and the pressure monitoring unit 4 is connected with the self-sealing valve 3, so that a complete sealing system is formed, and sealing damage caused by field operation is avoided. The current monitoring unit 6 is arranged on the lightning arrester support 8, and the upper end of the current monitoring unit is connected with the lower end of the lightning arrester body 1.
In this embodiment, from the sealing valve not being restricted to realize that the arrester body is sealed and aerify the effect among the prior art, but through sealing the valve certainly for the pressure monitoring unit seals on the arrester body, makes the pressure monitoring unit of electrical equipment to install, and entire system structure is succinct more, compact structure.
In this embodiment, when the arrester is prefabricated, can carry out the prefabrication installation in advance with pressure measurement unit through proclaiming oneself the valve, during the field usage, the assembling process is faster, and efficiency is higher.
In this embodiment, in order to realize the further installation of arrester, add the arrester support, simultaneously, install the current monitoring unit on the arrester support, improved the stability of current monitoring unit. If the lightning arrester is directly placed on the ground, the current monitoring unit is easily disconnected with the lightning arrester or even damaged when the weather is bad or the system moves; when the current monitoring device is used, the stability is poor, the sensitivity and the like of the current monitoring unit are easily influenced, and the monitored data are directly influenced.
The utility model discloses in, with the monitoring facilities of electric pressure and electric current, install through the structure of arrester body, need not to increase too much mounting structure, practiced thrift the cost, improved installation availability factor. The utility model discloses in, the gas purpose that is filled with certain pressure inside in advance when the production equipment at arrester body 1 is convenient to the monitoring to arrester sealing performance.
Example 2
In this embodiment, the structure of the self-sealing valve will be described.
Referring to fig. 3-4, the self-sealing valve 3 in this embodiment is provided with an equipment air hole 301 and an installation air hole 302, and the lightning arrester body 1 and the pressure monitoring unit 4 are hermetically connected to the self-sealing valve 3 through the equipment air hole 301 and the installation air hole 302, respectively. Compared with the prior art, in the embodiment, through the increased equipment air hole and the installation air hole, the installation of the lightning arrester body 1 and the pressure monitoring unit 4 is realized, namely, through the improvement of the structure, the effects of convenient installation and component saving are realized.
In this embodiment, the pressure monitoring unit 4 is preferably a pressure sensor, which has a function of converting a measured value into an electric quantity value, and a digital display panel and a 485 interface are disposed on the pressure sensor. In the embodiment, the pressure sensor is preferably manufactured by Shanghai Xiangshu industry development Co., Ltd, and the model of the pressure sensor is GF-D-02A-4-B-SM.
In this embodiment, the pressure sensor may also be a standard industrial control pressure sensor model PT 124G-210.
In the present embodiment, the selection, model, and the like of the pressure sensor can be selected by those skilled in the art based on common general knowledge.
Referring to fig. 3, in this embodiment, in order to achieve the effect that the self-sealing valve 3 is used as a gas charging port for field pressure compensation and a sealing test of the lightning arrester in the prior art, in addition to the equipment air hole 301, a gas charging connector (not shown in the figure) is further disposed on a side portion of the lightning arrester body 1, and the self-sealing valve 3 and the lightning arrester body 1 are vertically connected through the equipment air hole 301 and the gas charging connector. Compare with will sealing valve 3 directly in the upper end of arrester body 1 or lower extreme, seal valve 3 and set up perpendicularly in the lateral part of arrester body 1 from sealing valve 3 for the length of arrester body 1 shortens, because arrester body 1 just is longer originally, if increase again from sealing valve 3, then length is longer, and long and thin structural installation back poor stability, and the lateral part installation has then avoided this problem.
Referring to fig. 3 to 4, in the present embodiment, the device air hole 301 and the installation air hole 302 are respectively disposed at both ends of the self-sealing valve 3 along the installation direction of the self-sealing valve 3. Because among the electric power system, pressure sensor commonly used is lighter, so with its mode of directly pegging graft through the gas pocket set up in the tip of self-sealing valve 3, it is more appropriate some, be equivalent to the vertical direction of arrester body 1, equipment is a bit more, and the horizontal direction is more steady.
In actual use, the lightning arrester body 1 may need to be inflated, at this time, the lightning arrester body 1 is further provided with an inflation air hole 303 perpendicular to the installation direction of the self-sealing valve 3, and in a normal state, the inflation air hole 303 is blocked by a plug 304.
Example 3
In order to realize remote monitoring, the system further includes a signal transmission device in this embodiment.
Referring to fig. 5, the signal transmission device includes a photoelectric conversion unit 13, a transmission unit 12 and an upper computer 14, the pressure monitoring unit 4 and the current monitoring unit 6 are respectively connected to the photoelectric conversion unit 13, and the photoelectric conversion unit 13 is connected to the upper computer 14 through the transmission unit 12.
In the substation, an IED cabinet 11 is generally further included, and in the present embodiment, the photoelectric conversion unit 13 is fixed in the IED cabinet 11 by a fixing device. In particular, the fixing mount may be a bolted connection.
During signal transmission, the transmission unit in this embodiment is one of a light transmission unit, a serial communication unit, or a parallel communication unit. Specifically, the worker may select the transmission mode according to a usage scenario or the like. In the prior art, more optical fiber transmission units are adopted.
Referring to fig. 1, in the embodiment, the side portion of the arrester body 1 extends outward to form a fixing frame 7, and the current monitoring unit 6 is fixed by the fixing frame 7 and then electrically connected to the bottom of the arrester body 1 through the connecting wire 5.
In this embodiment, the MOA2020 current sensor manufactured by Ningbo workers on-line monitoring manufacturers is adopted as the current sensor, and data is transmitted to the IED and finally transmitted to the upper computer 14.
In this embodiment, the fixing frame 7 may be an L-shaped connecting rod directly connected to the side of the lightning arrester support 8, and the vertical portion of the L-shaped connecting rod is fixed to the current monitoring unit 6 by a bolt.
The utility model discloses in, through the arrester component, set up in advance in pressure sensor, current sensor and the transmission system of arrester component lower part, constitute remote monitoring system. Meanwhile, the inside of the lightning arrester body is pre-filled with gas with certain pressure, the sealing condition of the lightning arrester and the damp condition of the resistance card are comprehensively judged by monitoring the gas pressure change and combining the monitoring of leakage current, meanwhile, the running state of the lightning arrester can be monitored in real time by carrying out centralized remote transmission on data, problems are found in time, faults are processed, and the stability and the safety of the operation of a power grid are guaranteed.
In a specific embodiment, the electrical signals are transmitted to the IED cabinet through 485 interfaces on the pressure sensor and the current sensor. A photoelectric conversion device is arranged in the IED cabinet, and after the electric signals are converted into optical signals in the IED cabinet, the optical signals are uploaded to an upper computer through light rays.
The utility model discloses in the arrester monitoring system that provides not only simple structure, have that discovery fault time is early, analysis fault reliability is high, monitoring work load is little, characteristics such as the real-time is good.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An arrester monitoring system for an electrical power system, comprising:
the lightning arrester comprises a lightning arrester body, wherein gas is pre-filled in the lightning arrester body, so that the pressure in the lightning arrester body is greater than the pressure outside the lightning arrester body;
the pressure monitoring unit is connected with the lightning arrester body in a sealing mode through a self-sealing valve;
the lightning arrester body is supported by the lightning arrester support;
the current monitoring unit is fixed through the lightning arrester bracket and is grounded through the lightning arrester bracket;
the current monitoring unit is electrically connected with the bottom of the lightning arrester body.
2. The lightning arrester monitoring system for the power system as claimed in claim 1, wherein the self-sealing valve is provided with an equipment air hole and an installation air hole, and the lightning arrester body and the pressure monitoring unit are hermetically connected with the self-sealing valve through the equipment air hole and the installation air hole.
3. The lightning arrester monitoring system for the power system as claimed in claim 2, wherein the side part of the lightning arrester body is provided with an air charging connector, and the self-sealing valve is vertically connected with the air charging connector through an equipment air hole.
4. A surge arrester monitoring system for an electric power system according to claim 3 wherein the equipment air hole and the installation air hole are respectively provided at both ends of the self-sealing valve in an installation direction of the self-sealing valve.
5. A lightning arrester monitoring system for an electric power system according to claim 4, characterized in that the self-sealing valve is further provided with an air inflation hole perpendicular to the installation direction of the self-sealing valve, and the air inflation hole is normally blocked by a plug.
6. The lightning arrester monitoring system for the electric power system according to claim 1, further comprising a signal transmission device, wherein the signal transmission device comprises a photoelectric conversion unit, a transmission unit and an upper computer, the pressure monitoring unit and the current monitoring unit are respectively connected with the photoelectric conversion unit, and the photoelectric conversion unit is connected with the upper computer through the transmission unit.
7. A lightning arrester monitoring system for a power system according to claim 6 further comprising an IED cabinet, the photoelectric conversion unit being secured within the IED cabinet by a fixing mount.
8. An arrester monitoring system for an electrical power system as claimed in claim 6 wherein the transmission unit is one of a light transmission unit, a serial communication unit or a parallel communication unit.
9. An arrester monitoring system for an electric power system according to any of claims 1-8, characterized in that the arrester body side extends outwards to form a fixing frame, and the current monitoring unit is electrically connected with the arrester body bottom after being fixed by the fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020589870.8U CN211626561U (en) | 2020-04-20 | 2020-04-20 | Lightning arrester monitoring system for electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020589870.8U CN211626561U (en) | 2020-04-20 | 2020-04-20 | Lightning arrester monitoring system for electric power system |
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| Publication Number | Publication Date |
|---|---|
| CN211626561U true CN211626561U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020589870.8U Active CN211626561U (en) | 2020-04-20 | 2020-04-20 | Lightning arrester monitoring system for electric power system |
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| Country | Link |
|---|---|
| CN (1) | CN211626561U (en) |
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2020
- 2020-04-20 CN CN202020589870.8U patent/CN211626561U/en active Active
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