CN113848437A - Lightning arrester breakdown protection alarm device - Google Patents
Lightning arrester breakdown protection alarm device Download PDFInfo
- Publication number
- CN113848437A CN113848437A CN202111055539.3A CN202111055539A CN113848437A CN 113848437 A CN113848437 A CN 113848437A CN 202111055539 A CN202111055539 A CN 202111055539A CN 113848437 A CN113848437 A CN 113848437A
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- lightning arrester
- alarm device
- breakdown protection
- protection alarm
- shell
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- 230000015556 catabolic process Effects 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 7
- 229910052573 porcelain Inorganic materials 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1236—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of surge arresters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a lightning arrester breakdown protection alarm device, which comprises a shell, a lightning arrester fixing seat arranged at the top of the shell and a lightning arrester fixed on the lightning arrester fixing seat, wherein a current sensor and a relay which are sequentially communicated with a lead of the lightning arrester are arranged in the shell; and an alarm electrically connected with the controller is arranged outside the shell. The lightning arrester protection device is simple in structure and good in protection effect, and can automatically warn after the lightning arrester is broken down.
Description
Technical Field
The invention relates to a lightning arrester breakdown protection alarm device.
Background
The arrester is connected between the cable and ground, usually in parallel with the equipment to be protected. The lightning arrester can effectively protect communication equipment, and once abnormal voltage appears, the lightning arrester acts to play a role in protection. When the communication cable or equipment is operated under normal operating voltage, the lightning arrester does not act and is considered as an open circuit to the ground. Once high voltage occurs and the insulation of the protected equipment is endangered, the lightning arrester acts immediately to guide high voltage impact current to the ground, thereby limiting the voltage amplitude and protecting the insulation of the communication cable and the equipment. When the overvoltage disappears, the lightning arrester is quickly restored to the original state, so that the communication line works normally.
Therefore, the lightning arrester mainly plays a role in reducing the amplitude of the invading flow wave and reducing the overvoltage value borne by the protected equipment through the action of the parallel discharge gap or the nonlinear resistor, thereby protecting the communication line and the equipment.
The lightning arrester can be used not only to protect against high voltages generated by lightning but also to protect against high operating voltages.
In daily operation, the porcelain bushing surface of the arrester should be checked for contamination, since when the porcelain bushing surface is heavily contaminated, the voltage distribution will be very uneven. In a surge arrester with parallel shunt resistance, when the voltage distribution of one of the elements increases, the current through its parallel resistance will increase significantly, possibly burning the parallel resistance and causing a fault. In addition, the arc extinguishing performance of the valve type arrester may be affected. Therefore, when the porcelain bushing surface of the lightning arrester is seriously polluted, the porcelain bushing must be cleaned in time.
The hidden defects of the lightning arrester can be found most easily by inspecting the lead of the lightning arrester and the grounding down lead, the phenomena of burn marks and strand breakage and whether the discharge recorder burns or not; whether the sealing of the upper end lead of the arrester is good or not is checked, and the arrester is poor in sealing, water can enter the arrester to be wetted and accidents are easily caused, so that whether a cement joint at the joint of the porcelain bushing and the flange is tight or not is checked, and a waterproof cover can be additionally arranged at the upper lead of the 10 kV valve type arrester to prevent rainwater from permeating; checking whether the electrical distance between the lightning arrester and the protected electrical equipment meets the requirement, wherein the lightning arrester is close to the protected electrical equipment as much as possible, and the lightning arrester is used for checking the action condition of the recorder after thunderstorm; checking leakage current, and when the power frequency discharge voltage is greater than or less than a standard value, carrying out maintenance and test; when the action times of the discharge recorder are excessive, the discharge recorder needs to be overhauled; cracks are formed at the joint of the porcelain bushing and the cement; when the flange plate and the rubber pad fall off, the maintenance is required.
The insulation resistance of the arrester should be checked regularly. During measurement, a 2500V insulation rocking meter is used, and the measured value is compared with the previous result, and the device can be continuously put into operation when no obvious change exists. When the insulation resistance is remarkably reduced, generally caused by poor sealing and damp or short circuit of spark gap, when the insulation resistance is lower than a qualified value, a characteristic test is required; when the insulation resistance is remarkably increased, it is generally caused by poor contact or breakage of the internal parallel resistor, relaxation of the spring, separation of internal components, and the like.
The lightning arrester becomes permanently grounded after being broken down due to the fact that resistance of the lightning arrester becomes small after being broken down, and no obvious mark exists after the lightning arrester is broken down, so that electric quantity loss is caused, equipment operates in a fault mode, and great hidden danger is brought to safe operation of a power grid.
Chinese patent CN113238168A discloses a leakage current sensor, which includes a current monitoring circuit and a signal detection component. The leakage current sensor is divided into an acquisition end and a measuring end, the acquisition end is provided with a wiring terminal, the measuring end is provided with a connecting structure matched with the wiring terminal, the acquisition end and the measuring end are detachably connected in a mutual combination mode, the current monitoring circuit is arranged in the acquisition end, the signal detection assembly is arranged in the measuring end, the acquisition end is of a lantern ring structure and is sleeved at the bottom of the connecting part of the grounding end of the lightning arrester before the lightning arrester is installed, and the acquisition end is normally fixed on the connecting part after the lightning arrester is installed. The current monitoring circuit of the acquisition end adopts an embedded mutual inductor which is integrated with the lightning arrester when the bottom of the connecting part of the grounding end of the lightning arrester is connected. The lightning arrester leakage current measurement and efficient maintenance replacement operation can be achieved.
Chinese patent CN213934052U discloses a lightning arrester state monitoring device, including the monitor body, the side of monitor body is equipped with fixed column, mount pad, the centre of a circle department of mount pad internal surface is equipped with fixed cylinder, be equipped with the traveller on the fixed cylinder, the tip of traveller is equipped with the plectane, the outside cover of traveller is equipped with the spring, the inside opposition of mount pad is equipped with the stabilizing block, the one end of fixed column is located the centre of a circle of monitor body and the other end is equipped with the fixed block, be equipped with first projection on the tip intermediate position that the fixed block deviates from the fixed column, all be equipped with the second projection on the both ends of fixed block. The problem that when the lightning arrester online monitor monitors the state of the lightning arrester, the installation and the disassembly of an online monitoring instrument are not simple, convenient and flexible enough is solved.
However, the above solutions are relatively complicated and not suitable for wide application.
Disclosure of Invention
The invention aims to provide a lightning arrester breakdown protection alarm device which is simple in structure, good in protection effect and capable of automatically giving out a warning after the lightning arrester is broken down.
The invention adopts the following technical scheme:
a lightning arrester breakdown protection alarm device comprises a shell, a lightning arrester fixing seat arranged at the top of the shell and a lightning arrester fixed on the lightning arrester fixing seat, wherein a current sensor and a relay which are sequentially communicated with a lightning arrester lead are arranged in the shell, and a controller used for receiving signals of the current sensor and controlling the relay to act is arranged in the shell; and an alarm electrically connected with the controller is arranged outside the shell.
Furthermore, the outlet end of the relay is connected with the bus and grounded.
Further, the lead wire of the lightning arrester penetrates through the shell and is connected with the current sensor.
Furthermore, a plurality of bird spikes are arranged on the top of the shell.
Furthermore, a plurality of the bird-proof stabs are uniformly distributed on the top surface of the shell and the height of the bird-proof stabs is smaller than that of the lightning arrester.
Furthermore, prevent that bird thorn includes the bracing piece with casing top fixed connection, set up the spring beam on bracing piece top and set up the spur on the spring beam top.
Furthermore, the lateral wall of the upper end of the shell is provided with a circumferential rainproof edge.
Furthermore, a rainwater flow channel is arranged on the rain-proof edge.
Further, the controller is a single chip microcomputer or a PLC with a wireless communication module.
Further, the bottom of the shell is provided with a wireless transmitting antenna which is communicated with the controller.
The invention has the beneficial effects that: the size and the duration of the leakage current of the arrester are measured through the controller, the arrester is judged to be broken down when a certain value is reached, the controller controls the relay to break a circuit, the fault arrester is isolated, and meanwhile, an alarm is given out to remind a patrol worker to replace the fault arrester in time. Still prevent equipment ponding and break down through setting for on the casing prevent bird thorn and rainwater runner etc..
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic top view of the structure of fig. 1.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic top view of fig. 3.
Fig. 5 is a schematic structural diagram of embodiment 3 of the present invention.
The lightning arrester comprises a shell 1, a lightning arrester fixing seat 2, a lightning arrester 3, a current sensor 4, a relay 5, a controller 6, an alarm 7, a bus 8, a supporting rod 9, a spring rod 10, a top thorn 11, a rain-proof edge 12, a rainwater flow channel 13 and a wireless transmitting antenna 14.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
Example 1
As shown in fig. 1 and 2, an arrester breakdown protection alarm device includes a housing 1, an arrester fixing base 2 disposed on a top of the housing 1, and an arrester 3 fixed on the arrester fixing base 2, wherein a current sensor 4 and a relay 5 sequentially connected to an arrester lead are disposed in the housing 1, and a controller 6 for receiving a signal of the current sensor 4 and controlling the relay 5 to operate is disposed in the housing 1; an alarm 7 electrically connected with the controller 6 is arranged outside the casing 1. The lightning arrester collects current, then the current value of the lightning arrester is measured by the current sensor through a lightning arrester lead, the controller judges the magnitude and the duration of leakage current, when the leakage current is larger than 0.2A and the duration exceeds 3s, the lightning arrester is judged to be broken down, at the moment, the controller controls a relay to act, a circuit is disconnected, a fault lightning arrester is isolated, and an alarm is controlled to give an alarm.
And the outlet end of the relay 5 is connected with the bus 8 and is grounded. The lead of the lightning arrester 3 penetrates the housing 1 and is connected to the current sensor 4.
The top of the shell 1 is provided with a plurality of bird spikes. The plurality of bird-proof thorns are uniformly distributed on the top surface of the shell 1, and the height of the bird-proof thorns is smaller than that of the lightning arrester 3. The bird-proof thorn comprises a supporting rod 9 fixedly connected with the top of the shell 1, a spring rod 10 arranged at the top end of the supporting rod 9 and a top thorn 11 arranged at the top end of the spring rod 10. Because the arrester is in the eminence, and high altitude department easily appears birds and nests the scheduling problem, influences the equipment operation, and the middle part of preventing the bird thorn adopts the spring structure, and when birds stopped here, the spring can take place to rock, and the bird can not stand, and then reaches the purpose of driving the bird.
Example 2
The difference from example 1 is only that:
the upper end side wall of the shell 1 is provided with a circumferential rainproof edge 12. The rain-proof edge 12 is provided with a rain water flow channel 13.
In order to avoid water accumulation of equipment and protection of electric elements exposed outside the shell, a rainproof edge is arranged on the periphery of the top of the shell along the circumferential direction. The rainwater runner further improves the drainage effect.
Example 3
The controller 6 is a single chip microcomputer or a PLC with a wireless communication module.
The bottom of the shell 1 is provided with a wireless transmitting antenna 14, and the wireless transmitting antenna 14 is communicated with the controller 6.
When the controller judges that the arrester is broken down, the controller controls the relay to act, the circuit is disconnected, the fault arrester is isolated, the alarm is controlled to give an alarm, and meanwhile the controller sends information through the wireless communication module to remind the control center of processing.
Claims (10)
1. A lightning arrester breakdown protection alarm device is characterized by comprising a shell, a lightning arrester fixing seat arranged at the top of the shell and a lightning arrester fixed on the lightning arrester fixing seat, wherein a current sensor and a relay which are sequentially communicated with a lightning arrester lead wire are arranged in the shell, and a controller for receiving a signal of the current sensor and controlling the action of the relay is arranged in the shell; and an alarm electrically connected with the controller is arranged outside the shell.
2. The lightning arrester breakdown protection alarm device according to claim 1, wherein the outlet terminal of the relay is connected to a bus bar and grounded.
3. A lightning arrester breakdown protection alarm device according to claim 1, wherein the lead of the lightning arrester extends through the housing and is connected to the current sensor.
4. The lightning arrester breakdown protection alarm device according to claim 1, wherein a plurality of bird spikes are arranged on the top of the housing.
5. The lightning arrester breakdown protection alarm device according to claim 4, wherein the plurality of bird spikes are uniformly distributed on the top surface of the housing and have a height smaller than that of the lightning arrester.
6. The lightning arrester breakdown protection alarm device according to claim 5, wherein the bird spike comprises a support rod fixedly connected with the top of the housing, a spring rod arranged at the top end of the support rod, and a top spike arranged at the top end of the spring rod.
7. The lightning arrester breakdown protection alarm device according to claim 1, wherein the upper end side wall of the housing is provided with a circumferential rain-proof edge.
8. The lightning arrester breakdown protection alarm device of claim 7, wherein the rain-proof edge is provided with a rain channel.
9. The lightning arrester breakdown protection alarm device according to claim 1, wherein the controller is a single chip microcomputer or a PLC with a wireless communication module.
10. A lightning arrester breakdown protection alarm device according to claim 9, wherein the bottom of the housing is provided with a wireless transmitting antenna, and the wireless transmitting antenna is communicated with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055539.3A CN113848437A (en) | 2021-09-09 | 2021-09-09 | Lightning arrester breakdown protection alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055539.3A CN113848437A (en) | 2021-09-09 | 2021-09-09 | Lightning arrester breakdown protection alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113848437A true CN113848437A (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111055539.3A Pending CN113848437A (en) | 2021-09-09 | 2021-09-09 | Lightning arrester breakdown protection alarm device |
Country Status (1)
| Country | Link |
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| CN (1) | CN113848437A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023133578A1 (en) * | 2022-01-10 | 2023-07-13 | Saudi Arabian Oil Company | System and method for controlling and monitoring parallel surge arresters and bushings of a power transformer and motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578072A (en) * | 2012-03-09 | 2012-07-18 | 江苏新澳电力技术有限公司 | Bird feces-proofing splinter used for crossarm insulator |
| CN105248408A (en) * | 2015-11-06 | 2016-01-20 | 胜利油田邦源电气有限责任公司 | Pneumatic bird-preventing stabber |
| CN105475267A (en) * | 2015-11-09 | 2016-04-13 | 国网山东招远市供电公司 | Bird repeller for electric power transmission and distribution line tower |
| CN205811279U (en) * | 2016-06-22 | 2016-12-14 | 天津市吉涛防雷电器有限公司 | A kind of bird dispelling type spark gap |
| CN206321670U (en) * | 2016-12-27 | 2017-07-11 | 中国西电电气股份有限公司 | A kind of housing of monitoring device used for lightning arrester |
| CN209675027U (en) * | 2019-04-23 | 2019-11-22 | 江苏宇诚业基电气设备有限公司 | A kind of arrester with electric shock break function |
-
2021
- 2021-09-09 CN CN202111055539.3A patent/CN113848437A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578072A (en) * | 2012-03-09 | 2012-07-18 | 江苏新澳电力技术有限公司 | Bird feces-proofing splinter used for crossarm insulator |
| CN105248408A (en) * | 2015-11-06 | 2016-01-20 | 胜利油田邦源电气有限责任公司 | Pneumatic bird-preventing stabber |
| CN105475267A (en) * | 2015-11-09 | 2016-04-13 | 国网山东招远市供电公司 | Bird repeller for electric power transmission and distribution line tower |
| CN205811279U (en) * | 2016-06-22 | 2016-12-14 | 天津市吉涛防雷电器有限公司 | A kind of bird dispelling type spark gap |
| CN206321670U (en) * | 2016-12-27 | 2017-07-11 | 中国西电电气股份有限公司 | A kind of housing of monitoring device used for lightning arrester |
| CN209675027U (en) * | 2019-04-23 | 2019-11-22 | 江苏宇诚业基电气设备有限公司 | A kind of arrester with electric shock break function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023133578A1 (en) * | 2022-01-10 | 2023-07-13 | Saudi Arabian Oil Company | System and method for controlling and monitoring parallel surge arresters and bushings of a power transformer and motor |
| US11728641B2 (en) | 2022-01-10 | 2023-08-15 | Saudi Arabian Oil Company | System and method for controlling and monitoring parallel surge arresters and bushings of a power transformer and motor |
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