CN108008233A - A kind of the arrester on-Line Monitor Device and method of suitable cold operation - Google Patents
A kind of the arrester on-Line Monitor Device and method of suitable cold operation Download PDFInfo
- Publication number
- CN108008233A CN108008233A CN201711043850.XA CN201711043850A CN108008233A CN 108008233 A CN108008233 A CN 108008233A CN 201711043850 A CN201711043850 A CN 201711043850A CN 108008233 A CN108008233 A CN 108008233A
- Authority
- CN
- China
- Prior art keywords
- circuit
- arrester
- housing
- incubator
- cold operation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention relates to arrester on-line monitoring technique field, more particularly to a kind of for gapless metal-oxide lighting arrester, the arrester on-Line Monitor Device and measuring method of suitable cold operation.The present invention includes incubator, housing and circuit board, and wherein incubator is in outermost layer, and housing is in secondary outer layer, and circuit board is in innermost layer；Circuit board is connected on the support column of housing bottom；Housing is directly built in incubator, and incubator is fitted closely with housing.Apparatus of the present invention have good heat insulating ability and leakproofness, and suitable cold operation, can accurately measure under extreme natural environment, reliable communication, stablize display and and alarm, improve reliability, failure rate is reduced, mitigates the workload of maintenance personnel, realizes in low temperature site safety, stable operation.The present invention is also equipped with arrester status data transporting function, and note abnormalities to upload in time, allows failure arrester to obtain timely processing, avoids the generation of electric power accident, has larger economic benefit and social effect.
Description
Technical field
The present invention relates to arrester on-line monitoring technique field, more particularly to one kind to take shelter from the thunder for gapless metal-oxide
Device, the arrester on-Line Monitor Device and measuring method of suitable cold operation.
Background technology
Country is greatly developing intelligent power network at present, and arrester on-Line Monitor Device is to form intelligent power network
Important component.Arrester on-Line Monitor Device, being capable of accurate judgement arrester by the monitoring to leakage current of an arrester
Working condition so that primary equipment failure before safeguarded in time.
In northern China, the application environment of arrester on-Line Monitor Device is complex, 40 ° of north latitude to border winter temperature
It is extremely low, it is usually -25 DEG C~-55 DEG C, such rugged environment serious threat arrester on-Line Monitor Device is safely and steadly
Operation.And universal equipment at this stage（It is not suitable for the equipment of cold operation）Generally misapplied at low ambient temperatures, cause product
The problems such as appearance component damage, cannot be started up, and measurement error is big, and interface display is smudgy or even can not show.
At low ambient temperatures, there may be problems with for the operation of existing arrester on-Line Monitor Device：
(1) under low temperature environment, the insulation of device encapsulation and sealing effect be not good enough, insulating materials, metal material hydraulic performance decline etc.；
(2) under low temperature environment, power supply autophage increase, efficiency drastically declines, and causes the supply of power supply electric energy unstable, goes out
Existing monitoring device operation irregularity, or even crash；
(3) under low temperature environment, the change of electronic device physical attribute causes the hardware circuit of monitoring device not work；
(4) under low temperature environment, technical requirement cannot be fully achieved in transformer precision, cause front-end collection data unreliable.
How solving monitoring device, reliability service is a very urgent problems at low ambient temperatures.This is solved to ask
Topic needs to start with from thermal insulation material, components selection, technical solution, processing technology and installation and debugging etc..
In conclusion the present invention have studied a kind of the arrester on-Line Monitor Device and method of suitable cold operation, it is both full
Foot is safely and steadly run at low ambient temperatures, and can meet the intelligence of transformer substation arrester state of insulation on-line monitoring
Demand.
The content of the invention
The present invention is directed to above-mentioned problems of the prior art, there is provided a kind of arrester on-line monitoring of suitable cold operation
Device and method.Purpose be in order to realize arrester on-Line Monitor Device can under severe natural environment especially low temperature ring
Safely and steadly run under border, new method is provided for arrester on-line monitoring.
In order to realize foregoing invention purpose, the present invention is achieved by the following technical solutions：
A kind of arrester on-Line Monitor Device of suitable cold operation, including incubator, housing and circuit board, wherein incubator exist
Outermost layer, housing is in secondary outer layer, and circuit board is in innermost layer；Circuit board is connected on the support column of housing bottom；Housing is directly interior
It is placed in incubator, incubator is fitted closely with housing.
The circuit board includes：Mutual inductor, leakage current signal modulate circuit, lightning strike signals modulate circuit, central processing
Device circuit, storage circuit, clock circuit, communication and protection circuit, display circuit and power supply and protection circuit；Wherein, mutual inductance
Device is connected with leakage current signal modulate circuit, and leakage current signal modulate circuit is connected with central processor circuit, mutual inductor
The other end be connected with lightning strike signals modulate circuit, lightning strike signals modulate circuit is connected with central processor circuit, central processing
Device circuit is connected with storage circuit respectively, clock circuit connects and is communicated and protection circuit is connected, and central processor circuit 7 is also
It is connected with display circuit, power supply and protection circuit provide power supply for all circuits.
The incubator includes babinet and case lid two parts, is equipped with insulating layer on babinet and case lid, in the liner of babinet
It is sealed with socket；Fixed between case lid and babinet using hasp lock, case lid and babinet are pressed together tightly, and can opened repeatedly
Close.
The material of the insulating layer is silica nano-pore heat-insulating material.
The housing is divided into two parts up and down, is provided with window on upper shell and is sealed by tempered glass；The top of lower housing shell
Hole is provided with, for punch current transfomer lead, is afterwards sealed tapping；Lower housing shell bottom is equipped with socket, is respectively used to connection electricity
Source line and order wire, lower housing shell are equipped with mounting hole, and installation for device is fixed.
The upper shell is equipped with the high elastic rubber pad of insulation and sealing with lower housing shell junction.
Fixed between the upper shell and lower housing shell using some evenly arranged screws.
The material of the housing is cast aluminium.
A kind of lightning arrestor on-line monitoring methods of suitable cold operation, including：Leakage current of an arrester and lightning stroke action letter
Number it is coupled to by mutual inductor on circuit board, the leakage current to come from mutual inductor coupling passes to leakage current signal conditioning
Circuit, carries out signal conversion, filtering and enhanced processing, signal conversion is that current signal is changed into voltage signal herein；It
After pass to central processor circuit, carry out analog-to-digital conversion herein, software filtering calculates and analysis, and then it is complete to obtain arrester
Current value and arrester resistance current value parameter, these parameters will be capped timestamp, at the time of acquisition with recording parameters；Centre
Device circuit is managed by the analysis to above-mentioned parameter, judges arrester operating mode, if you have questions, immediately pass through communication and protection circuit to
Alarm on backstage；The lightning stroke action signal to come from mutual inductor coupling passes to lightning strike signals modulate circuit, lightning strike signals conditioning electricity
Road can accurately extract lightning strike signals, and produce trigger signal, triggering central processor circuit record once lightning stroke action and
At the time of lightning stroke occurs；Clock circuit provides the time for package unit, supports capping timestamp；Storage circuit is used for scheduled store
The measurement result and analysis result of device；Display circuit is used for the measurement result and analysis result of display device；Communication and protection
Circuit is used for data remote；Power supply and protection circuit are powered to package unit.
The invention has the advantages that and beneficial effect：
The present invention has done for this environmental factor of low temperature in the prior art and has been directed to Journal of Sex Research：
(1) at low ambient temperatures, apparatus of the present invention encapsulation has good heat insulating ability and leakproofness.By to adiabatic heat-insulation technology
Studied, it is found that at low temperature, the heat-insulating property of Nanometer-porous is fairly obvious.Therefore by silica nano-pore
Heat-insulating material is applied in the INSULATION DESIGN of monitoring device, designs a kind of new monitoring device incubator, effectively alleviates low
Equipment produced problem under warm environment.Work well as the haybox cooking of thermal insulation material；It is of the invention in incubator
Housing, housing use cast aluminium material, and opening is sealed using high elastic rubber, and sealing effect is good.
(2) at low ambient temperatures, apparatus of the present invention power supply being capable of reliable power supply.Power supply easily opens at low ambient temperatures
Dynamic difficult the problem of can not even running, triggering the concrete reason of failure mainly has following several respects：First, low temperature lower switch pipe
Characteristic changing；Second, electrolytic capacitor loses capacity effect under low temperature；Third, optocoupler can not work normally under low temperature；It is fourth, low
Pressure-sensitive resistance becomes larger under temperature.The solution route of the above problem is mainly to start with from the device of selection good temp characteristic, because
This, the wide technical grade electronic device of present invention selection operating temperature range, ensures in the environment of -40 DEG C~105 DEG C degrees Celsius,
It is capable of the work of normal table.If technical grade optocoupler can not still meet application requirement, magnetic coupling can be used to substitute optocoupler；Such as
Fruit technical grade electrolytic capacitor can not still meet application requirement, solid capacitor can be used to substitute electrolytic capacitor, or select low
The electrolytic capacitor of pressure voltage is used in series.
(3) at low ambient temperatures, hardware circuit of the invention being capable of reliability service.For hardware circuit scheme, press completely
According to reliability design flow, from links such as parts selection, design of Reducing Rating, Redundancy Design, EMC Designs, to system electricity
Road is combed, is calculated, is verified, and finds and solve the design hidden danger that may be gone wrong under critical or extreme condition.Wherein
Circuit system carries out type selecting and design in addition to particular device according to level-one drop volume；Devise and be totally independent of master control system
Monitoring module, when exception and crash state occurs in master control system, can trigger power-off restoration；The mutual inductance that part is easily gone wrong
Device and circuit employ backup design, and in the case where single part goes wrong, guarantee system can work normally；According to level Four
Degree of protection carries out circuit protection Design, adds lightning-protection module, at utmost improves the barrier propterty of product.
(4) at low ambient temperatures, mutual inductor of the invention has high accuracy and high linearity.Permalloy is selected as mutual
Sensor magnetic material, still has the good linearity at low ambient temperatures；According to the size of equipment under test leakage current, determine
The turn ratio and rated value of mutual inductor, at utmost reduce the error of mutual inductor；Using circle compensation, differential compensation is subtracted, software is mended
The precision and the linearity of mutual inductor compensation method lifting mutual inductor such as repay.Mutual inductor is to seal in formula in arrester on-Line Monitor Device
Current transformer, primary equipment flow through that the electric current of mutual inductor is very faint in the case of normal work, and the noise at scene is done
To disturb but very serious, then the current signal that mutual inductor obtains includes many higher hamonic waves, thus to detecting the essence of mutual inductor
The performance requirements such as exactness, angle error, stability, signal-to-noise ratio are higher.The northern area of China, since winter temperature is very low, when minimum
Temperature reaches -40 DEG C, and measurement error can significantly increase at this time.For this reason, the present invention ensures mutual inductor from the following aspects
High accuracy and high linearity：First, in the development process of mutual inductor, the measured core material of matter is selected, it is operated in magnetic
Change curve and the preferable region of loss angle curve linear degree, learn that permalloy is relatively adapted to be produced on northern area by research
The high-precision mutual inductor used, the indices of transformer test are more stable, meet actual motion requirement；Second, according to
The size of equipment under test leakage current, selects the mutual inductor of different turn ratios；Third, mutual inductor is set to be operated in rated current as far as possible
Near, it is to reduce error, improve the effective way of stability；Fourth, reduce transformer error except above-mentioned material, technological measure
Outside, compensation method can be also used, adoptable compensation method has, and subtracts circle compensation, differential compensation, software compensation etc..
The present invention is designed for extreme natural environment especially low temperature environment, and device can supervise online at low ambient temperatures
The parameter such as survey at the time of arrester total current, current in resistance property, number of lightning strokes and lightning stroke occur；Device has telecommunication work(
Energy；Device can be locally stored and show monitoring data；Device has the function of electric current overload alarm.Device uses intelligent substation I0
Communication protocol uses RS485 circuits as telecommunication protocol, physical layer communication link.Monitoring data can deposit in portion in the device
Storage more than 1 year.When arrester current value exceedes the default threshold value of device, device is by output alarm signal.
The special research and design the present invention be directed to extreme natural environment especially low temperature environment, therefore the present invention's is excellent
Putting is：Suitable cold operation, device can be especially accurately measured under low temperature environment under extreme natural environment, reliable communication,
Stablize display and and alarm, improve the reliability of device at low ambient temperatures, reduce plant failure rate, alleviate maintenance
The workload of personnel, final realization device is in low temperature site safety, stably run.In addition the present invention possesses arrester status number
According to transporting function, note abnormalities to upload in time, allow failure arrester to obtain timely processing, avoid the generation of electric power accident.
Apparatus of the present invention can also monitor the parameters such as arrester total current, current in resistance property, action frequency on-line, and with this
The functions such as ground is shown, telecommunication, data storage, suitable for the on-line monitoring of each voltage class arrester under low temperature environment, its
Have a extensive future, the effect reached is：1. suitably apply at low ambient temperatures；2. improve low temp area arrester operating mode to sentence
Disconnected reliability and stability；3. save the maintenance cost of low temp area monitoring device；4. it is pre- with failure to realize remotely monitor
Survey.Apparatus of the present invention will have larger economic benefit and social effect once implementation.
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further detail and explanation.
Brief description of the drawings
Fig. 1 is the device of the invention structure diagram；
Fig. 2 is the schematic block circuit diagram of the present invention.
In figure：Incubator 1, housing 2, circuit board 3, leakage current signal modulate circuit 4, mutual inductor 5, lightning strike signals conditioning
Circuit 6, central processor circuit 7, storage circuit 8, clock circuit 9, communication and protection circuit 10, display circuit 11, power supply and
Protect circuit 12.
Embodiment
The present invention is a kind of arrester on-Line Monitor Device and method of suitable cold operation, wherein suitable cold operation
Arrester on-Line Monitor Device includes incubator 1, housing 2 and circuit board 3.Wherein incubator 1 is in outermost layer, and housing 2 is secondary outer
Layer, circuit board 3 is in innermost layer.Circuit board 3 is screwed on the support column of 2 bottom of housing；Housing 2 is directly built in guarantor
In incubator 1, incubator 1 is fitted closely with housing 2.
The circuit board 3 includes：Mutual inductor 5, leakage current signal modulate circuit 4, lightning strike signals modulate circuit 6, in
Central processor circuit 7, storage circuit 8, clock circuit 9, communication and protection circuit 10, display circuit 11 and power supply and protection electricity
Road 12.Wherein, mutual inductor 5 is connected with leakage current signal modulate circuit 4, leakage current signal modulate circuit 4 and central processing
Device circuit 7 connects, and the other end of mutual inductor 5 is connected with lightning strike signals modulate circuit 6, lightning strike signals modulate circuit 6 and centre
Reason device circuit 7 connects, and central processor circuit 7 is connected with storage circuit 8 respectively, clock circuit 9 connects and communicates and protects electricity
Road 10 is connected, and central processor circuit 7 is also connected with display circuit 11, and power supply and protection circuit 12 carry for all circuits
Power supply source.
The incubator 1 includes babinet and case lid two parts.Insulating layer, the liner of babinet are equipped with babinet and case lid
In be sealed with socket.The material of insulating layer is silica nano-pore heat-insulating material.Some technical grade hasps are used between case lid and babinet
Lock is fixed, and can be pressed together tightly case lid and babinet, and convenient operation, can switch repeatedly.
The material of the housing 2 is cast aluminium, is divided into two parts up and down, and window and close by tempered glass is provided with upper shell
Envelope.The top of lower housing shell is provided with hole, for punch current transfomer lead, afterwards seals tapping；Lower housing shell bottom is equipped with two
Aviation socket, is respectively used to connection power cord and order wire, four angles of lower housing shell are respectively equipped with a mounting hole, for device
Installation is fixed.Fixed between upper shell and lower housing shell using some evenly arranged screws, upper shell has with lower housing shell junction
High elastic rubber pad, heat insulating ability and leakproofness are good.
A kind of lightning arrestor on-line monitoring methods of suitable cold operation of the present invention, including：
Leakage current of an arrester and lightning stroke action signal are coupled on circuit board by mutual inductor, are come from mutual inductor coupling
Leakage current passes to leakage current signal modulate circuit 4, carries out signal conversion, filtering and enhanced processing, signal conversion herein
It is that current signal is changed into voltage signal.Central processor circuit 7 is passed to afterwards, carries out analog-to-digital conversion, software herein
Filtering, calculates and analyzes, and then obtains the parameter such as arrester total current value and arrester resistance current value, these parameters will be capped
Timestamp, at the time of acquisition with recording parameters.Central processor circuit 7 judges arrester work by the analysis to above-mentioned parameter
Condition, if you have questions, can immediately pass through communication and protection circuit 10 is alarmed to backstage.The lightning stroke to come from mutual inductor coupling acts letter
Number lightning strike signals modulate circuit 6 is passed to, lightning strike signals modulate circuit 6 can accurately extract lightning strike signals, and produce triggering
Signal, at the time of triggering central processor circuit 7 records once lightning stroke action and lightning stroke generation.Clock circuit 9 is package unit
Time is provided, supports capping timestamp.Storage circuit 8 is used for the measurement result and analysis result of scheduled store device.Display electricity
Road 11 is used for the measurement result and analysis result of display device.Communication and protection circuit 10 are used for data remote.Power supply and protection
Circuit 12 is powered to package unit.
As described above, the embodiment of the present invention is described in detail, as long as but essentially without this hair of disengaging
Bright inventive point and effect can have many deformations, this will be readily apparent to persons skilled in the art.Therefore, this
The variation of sample is also integrally incorporated within protection scope of the present invention.
Claims (9)
1. a kind of arrester on-Line Monitor Device of suitable cold operation, it is characterized in that：Including incubator（1）, housing（2）And electricity
Road plate, wherein incubator（1）In outermost layer, housing（2）In secondary outer layer, circuit board（3）In innermost layer；Circuit board（3）It is connected to
Housing（2）On the support column of bottom；Housing（2）Directly it is built in incubator（1）In, incubator（1）With housing（2）Close patch
Close.
2. a kind of arrester on-Line Monitor Device of suitable cold operation according to claim 1, it is characterized in that：The electricity
Road plate（3）Including：Mutual inductor（5）, leakage current signal modulate circuit（4）, lightning strike signals modulate circuit（6）, central processing unit
Circuit（7）, storage circuit（8）, clock circuit（9）, communication and protection circuit（10）, display circuit（11）And power supply and protection
Circuit（12）；Wherein, mutual inductor（5）With leakage current signal modulate circuit（4）Connection, leakage current signal modulate circuit（4）
With central processor circuit（7）Connection, mutual inductor（5）The other end and lightning strike signals modulate circuit（6）Connection, lightning strike signals tune
Manage circuit（6）With central processor circuit（7）Connection, central processor circuit（7）Respectively with storage circuit（8）Connection, clock
Circuit（9）Connection and communication and protection circuit（10）It is connected, central processor circuit（7）Also with display circuit（11）It is connected
Connect, power supply and protection circuit（12）Power supply is provided for all circuits.
3. a kind of arrester on-Line Monitor Device of suitable cold operation according to claim 1, it is characterized in that：The guarantor
Incubator（1）Including babinet and case lid two parts, insulating layer is equipped with babinet and case lid, socket is sealed with the liner of babinet；
Fixed between case lid and babinet using hasp lock, case lid and babinet are pressed together tightly, and can switched repeatedly.
4. a kind of arrester on-Line Monitor Device of suitable cold operation according to claim 3, it is characterized in that：The guarantor
The material of warm layer is silica nano-pore heat-insulating material.
5. a kind of arrester on-Line Monitor Device of suitable cold operation according to claim 1, it is characterized in that：The shell
Body（2）It is divided into two parts up and down, is provided with window on upper shell and is sealed by tempered glass；The top of lower housing shell is provided with hole, is used for
Punch current transfomer lead, afterwards seals tapping；Lower housing shell bottom is equipped with socket, is respectively used to connection power cord and communication
Line, lower housing shell are equipped with mounting hole, and installation for device is fixed.
6. a kind of arrester on-Line Monitor Device of suitable cold operation according to claim 5, it is characterized in that：On described
Housing is equipped with the high elastic rubber pad of insulation and sealing with lower housing shell junction.
7. a kind of arrester on-Line Monitor Device of suitable cold operation according to claim 5, it is characterized in that：On described
Fixed between housing and lower housing shell using some evenly arranged screws.
8. a kind of arrester on-Line Monitor Device of suitable cold operation according to claim 1, it is characterized in that：The shell
Body（2）Material be cast aluminium.
9. a kind of lightning arrestor on-line monitoring methods of suitable cold operation, it is characterized in that：Including：
Leakage current of an arrester and lightning stroke action signal are coupled on circuit board by mutual inductor, are come from mutual inductor coupling
Leakage current passes to leakage current signal modulate circuit, carries out signal conversion, filtering and enhanced processing herein, and signal conversion is
It is that current signal is changed into voltage signal；Central processor circuit is passed to afterwards, carries out analog-to-digital conversion, software filter herein
Ripple, calculates and analyzes, and then obtains arrester total current value and arrester resistance current value parameter, these parameters will be capped the time
Stamp, at the time of acquisition with recording parameters；Central processor circuit judges arrester operating mode, such as by the analysis to above-mentioned parameter
It is problematic, immediately pass through communication and protection circuit is alarmed to backstage；The lightning stroke action signal to come from mutual inductor coupling passes to
Lightning strike signals modulate circuit, lightning strike signals modulate circuit can accurately extract lightning strike signals, and produce trigger signal, in triggering
At the time of central processor circuit records once lightning stroke action and lightning stroke generation；Clock circuit provides the time for package unit, supports
It is capped timestamp；Storage circuit is used for the measurement result and analysis result of scheduled store device；Display circuit is used for display device
Measurement result and analysis result；Communication and protection circuit are used for data remote；Power supply and protection circuit are powered to package unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043850.XA CN108008233A (en) | 2017-10-31 | 2017-10-31 | A kind of the arrester on-Line Monitor Device and method of suitable cold operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711043850.XA CN108008233A (en) | 2017-10-31 | 2017-10-31 | A kind of the arrester on-Line Monitor Device and method of suitable cold operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108008233A true CN108008233A (en) | 2018-05-08 |
Family
ID=62052073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711043850.XA Pending CN108008233A (en) | 2017-10-31 | 2017-10-31 | A kind of the arrester on-Line Monitor Device and method of suitable cold operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108008233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802483A (en) * | 2018-05-22 | 2018-11-13 | 国网辽宁省电力有限公司电力科学研究院 | A kind of the transformer iron core grounding current on-Line Monitor Device and method of suitable cold operation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2516483Y (en) * | 2002-01-18 | 2002-10-16 | 烟台镇泰滚塑厂 | Box with thermal insulation |
| CN201373895Y (en) * | 2009-03-09 | 2009-12-30 | 浙江纪元电气集团有限公司 | Online monitoring device of zinc oxide arrester (MOA) |
| CN202854247U (en) * | 2012-09-18 | 2013-04-03 | 辽宁省电力有限公司电力科学研究院 | Gapless metal oxide surge lightning arrester no residual voltage monitoring device |
| CN204313825U (en) * | 2014-11-25 | 2015-05-06 | 哈尔滨工程大学 | A kind of plate strain meter of monitoring of structures distortion and the monitoring device of iced areas gate structure distortion |
| CN105467197A (en) * | 2015-12-29 | 2016-04-06 | 国家电网公司 | Online monitoring device of integrated lightning arrester |
| CN105807161A (en) * | 2016-03-17 | 2016-07-27 | 国家电网公司 | Heat preservation box for electric power online monitoring device |
| CN106932675A (en) * | 2017-04-14 | 2017-07-07 | 南京世都科技有限公司 | For the monitoring device of arrester |
-
2017
- 2017-10-31 CN CN201711043850.XA patent/CN108008233A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2516483Y (en) * | 2002-01-18 | 2002-10-16 | 烟台镇泰滚塑厂 | Box with thermal insulation |
| CN201373895Y (en) * | 2009-03-09 | 2009-12-30 | 浙江纪元电气集团有限公司 | Online monitoring device of zinc oxide arrester (MOA) |
| CN202854247U (en) * | 2012-09-18 | 2013-04-03 | 辽宁省电力有限公司电力科学研究院 | Gapless metal oxide surge lightning arrester no residual voltage monitoring device |
| CN204313825U (en) * | 2014-11-25 | 2015-05-06 | 哈尔滨工程大学 | A kind of plate strain meter of monitoring of structures distortion and the monitoring device of iced areas gate structure distortion |
| CN105467197A (en) * | 2015-12-29 | 2016-04-06 | 国家电网公司 | Online monitoring device of integrated lightning arrester |
| CN105807161A (en) * | 2016-03-17 | 2016-07-27 | 国家电网公司 | Heat preservation box for electric power online monitoring device |
| CN106932675A (en) * | 2017-04-14 | 2017-07-07 | 南京世都科技有限公司 | For the monitoring device of arrester |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802483A (en) * | 2018-05-22 | 2018-11-13 | 国网辽宁省电力有限公司电力科学研究院 | A kind of the transformer iron core grounding current on-Line Monitor Device and method of suitable cold operation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202772673U (en) | Intelligent transformer substation inspection system | |
| CN201532416U (en) | Intelligent cable monitor | |
| CN102801216B (en) | A kind of intelligent substation inspection system | |
| CN203241817U (en) | On-line intelligent analysis and control system for operation parameters of oil pumping machine | |
| CN109683117A (en) | Flexible direct current electronic type voltage transformer transient state step response test macro | |
| CN201845069U (en) | On-line detection device of insulation stage of capacitive equipment of distributed transformer substation | |
| CN207132874U (en) | The microcosmic displacement detecting instrument of GIS Bellows expansion joints | |
| CN110553801B (en) | Multifunctional gas density monitor and system based on edge calculation | |
| CN104422834A (en) | Power grid safety supervision detection device based on intelligent electric meter | |
| CN106932675A (en) | For the monitoring device of arrester | |
| CN207924054U (en) | A kind of fault detector | |
| CN108008233A (en) | A kind of the arrester on-Line Monitor Device and method of suitable cold operation | |
| CN207851142U (en) | A kind of acquisition of power information is long-range and local communication device | |
| CN102445578A (en) | Electricity stealing prevention inspecting and monitoring detector | |
| CN105303799A (en) | Wireless data collector | |
| CN203164360U (en) | Transformer device insulation online monitoring system | |
| CN113075447A (en) | Intelligent detection device and method for 400V low-voltage distribution network | |
| CN110411894B (en) | Gas density monitoring system | |
| CN207488361U (en) | Integrated arrester resistance current on-Line Monitor Device based on wireless synchronization technology | |
| CN204807308U (en) | Measure wireless device of steam turbine extraction check valve shut -in time | |
| CN208209624U (en) | A kind of conductor galloping monitoring device | |
| CN111044830A (en) | Zinc oxide arrester operating characteristic live monitoring device | |
| CN205427026U (en) | Hindering nature of metal oxide varistor leakage current on -line monitoring ware and intelligent metal oxide varistor arrester | |
| CN204694753U (en) | A kind of high-precision transmission line of electricity electric current on-Line Monitor Device | |
| CN203825111U (en) | Zinc oxide lightning arrester on-line monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180508 |