CN107966220A - A kind of remote monitoring method based on thermometric wire clamp - Google Patents
A kind of remote monitoring method based on thermometric wire clamp Download PDFInfo
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- CN107966220A CN107966220A CN201711017463.9A CN201711017463A CN107966220A CN 107966220 A CN107966220 A CN 107966220A CN 201711017463 A CN201711017463 A CN 201711017463A CN 107966220 A CN107966220 A CN 107966220A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000013499 data model Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 35
- 238000005070 sampling Methods 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- XKJMBINCVNINCA-UHFFFAOYSA-N Alfalone Chemical compound CON(C)C(=O)NC1=CC=C(Cl)C(Cl)=C1 XKJMBINCVNINCA-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- H02J13/0075—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The present invention is suitable for electric power monitoring technical field, a kind of remote monitoring method based on thermometric wire clamp is provided, the thermometric wire clamp is divided into level-one wire clamp and two level wire clamp, multiple level-one wire clamps and a two level wire clamp form a monitoring group, the wire clamp monitored in group is arranged in a straight line, and two level wire clamp is located at least significant end arranged in a straight line, all wire clamps are both provided with radio receiving transmitting module, so that can be with transceiving data and instruction between adjacent wire clamp, the two level wire clamp further includes network data model, the two level wire clamp and background server network connection.For the present invention only with a flow card is safeguarded, cost is relatively low；And it is special, when arranging net, level-one wire clamp is arranged in the region of dtr signal, in the preferable region arrangement two level wire clamp of signal, accordingly even when there are the region of subnetwork dtr signal, can also realize that data acquisition covers.Furthermore it is preferred that in scheme, rational sample frequency is set for wire clamp always according to actual line electricity flow valuve and ambient temperature situations at background server end, even if to achieve the purpose that to save flow, pinpoint the problems.
Description
Technical field
The invention belongs to electric power monitoring technical field, more particularly to a kind of remote monitoring method based on thermometric wire clamp.
Background technology
High pressure electric line is really formed by connecting by a section power transmission line, and wire clamp plays connection function in joint；This
A little tie points generally all have contact resistance, and the bigger pressure drop of electric current passed through is higher, and the power of consumption is more, so that heating up
Higher, the time, which has been grown, to blow power transmission line, this is just by loose contact fault progression to grid power blackout accident.So will be to defeated
Power lug thermometric, finds temperature rise, timely alert process, avoids breaking down and accident in time.
It is a kind of effective manner to carry out monitoring temperature to power transmission line using thermometric wire clamp.Thermometric wire clamp is all built-in with present
Network data model, i.e. GPRS module, 3G module or 4G modules, thermometric wire clamp are real by the temperature data of the power transmission line collected
When be uploaded to background server, background server provides alarm when finding that temperature data exceedes expected.This mode exists such as
Lower drawback：
1st, each thermometric wire clamp will set network data model, i.e., each thermometric wire clamp will install operator's flow
Card, excessive flow card maintenance cost are very high；
2nd, the covering of some regional network is bad, and transfer efficiency is very low in data connection, suspension state easily occurs；
3rd, the sample frequency of thermometric wire clamp immobilizes, it is impossible to adapts to actual conditions and makes adjustment.
The content of the invention
In view of the above problems, it is an object of the invention to provide a kind of remote monitoring method based on thermometric wire clamp, with solution
Certainly above-mentioned drawback problem.
The present invention adopts the following technical scheme that：
The thermometric wire clamp is divided into level-one wire clamp and two level wire clamp, and multiple level-one wire clamps and a two level wire clamp form one
Group is monitored, the wire clamp monitored in group is arranged in a straight line, and two level wire clamp is located at least significant end arranged in a straight line, and all wire clamps are all provided with
It is equipped with radio receiving transmitting module so that network number can be further included with transceiving data and instruction, the two level wire clamp between adjacent wire clamp
According to module, the two level wire clamp and background server network connection, the remote monitoring method comprise the following steps：
For each monitoring group, each wire clamp carries out power transmission line data sampling generation data packet, the data packet bag
Include circuit number, group number, wire clamp ID, sampling time stamp and sampled data, the sampled data and include at least power transmission line
Temperature data；
Data packet is sent to downstream wire clamp, line downstream clamping connection by radio receiving transmitting module after the wire clamp generation data packet of upstream
Continue downstream to send in the lump together with the data packet oneself generated after receiving data packet, until receiving positioned at end secondary wire clamp
The data packet of all level-one wire clamps；
Two level wire clamp sends the data packet and the data packet of all level-one wire clamps that oneself is generated by network data model
To background server；
After background server receives data packet, sorted out according to circuit number, group number and wire clamp ID, obtained defeated
The temperature variations for the power transmission line that all wire clamps under electric line in all monitoring groups detect；
Alarm is sent when background server monitors that temperature data therein exceedes expected.
Further, for the data packet of wire clamp sampling generation, it is assumed that wire clamp ID is IDx, sampled data therein
Temperature data t including current power transmission line, further includes the present current value I of power transmission linex, ambient temperature value tx, in background server
End, each circuit number correspond to the reference current value I of a transmission line of electricity0, it is assumed that default nominal temperature is t0, then dynamic threshold
Valueα is regulation coefficient, and value range is 1 to 1.5, F (tx,t0) be temperature funtion, when -10 DEG C≤
tx-t0At≤10 DEG C, F (tx,t0)=1, works as tx-t0>At 10 DEG C, F (tx,t0)=2, work as t0-tx>10 DEG C, F (tx,t0)=0.5,
Background server generates the sample frequency f of the wire clamp according to the corresponding dynamic threshold k of current wire clamp IDx, as k≤0.5, f=
f0, when 0.5<During k≤0.8, f=1.5f0, when 0.8<During k≤2, f=3f0, work as k>When 2, f=6f0, wherein f0For default sample
Frequency, background server find purpose two level wire clamp according to the circuit number and group number that receive in data packet, then will
Obtained sample frequency f and IDx is sent to purpose two level wire clamp, and purpose two level wire clamp compares itself wire clamp ID and IDx, if not
Together, then IDx, sample frequency f are sent to the level-one wire clamp of upstream, level-one wire clamp continues identical comparison, until finding wire clamp ID
For the wire clamp of IDx, which performs data sampling according to sample frequency f.
Further, when the temperature data of continuous three sampling times is all higher than desired temperature, then in background server
Display terminal on provide alarm prompt.
The beneficial effects of the invention are as follows：The present invention is first grouped thermometric wire clamp, and a group includes multiple level-ones
Wire clamp and a two level wire clamp, data relay center of the two level wire clamp as level-one wire clamp, is only used in two level wire clamp and sets flow
Card, the data packet of other level-one wire clamps generation is transmitted to two level wire clamp step by step, and is uploaded to backstage by two level wire clamp and takes
Business device, therefore only with a flow card is safeguarded, cost is relatively low；And it is special, when arranging net, in the region of dtr signal
Arrange level-one wire clamp, in signal preferable region arrangement two level wire clamp, accordingly even when there are the region of subnetwork dtr signal,
It can also realize that data acquisition covers.Furthermore it is preferred that in scheme, background server end always according to actual line electricity flow valuve and
Ambient temperature situations set rational sample frequency for wire clamp, even if to achieve the purpose that to save flow, pinpoint the problems.
Brief description of the drawings
Fig. 1 is the structure chart of a monitoring group；
Fig. 2 is the flow chart of the remote monitoring method provided in an embodiment of the present invention based on thermometric wire clamp.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Fig. 1 shows the structure chart of a monitoring group, as shown in Figure 1, the thermometric wire clamp is divided into level-one wire clamp and two
Level wire clamp, multiple level-one wire clamps and a two level wire clamp form a monitoring group, and the wire clamp monitored in group is arranged in a straight line, and
Two level wire clamp is located at least significant end arranged in a straight line, and all wire clamps are both provided with radio receiving transmitting module so that can between adjacent wire clamp
With transceiving data and instruction, the two level wire clamp further includes network data model, the two level wire clamp and background server network
Connection.
Based on said structure, as shown in Fig. 2, the remote monitoring method bag provided in an embodiment of the present invention based on thermometric wire clamp
Include following step：
Step S1, for each monitoring group, each wire clamp carries out power transmission line data sampling generation data packet, the number
Include at least defeated according to circuit number, group number, wire clamp ID, sampling time stamp and sampled data, the sampled data is included
The temperature data of electric wire.
All monitoring groups are managed collectively by background server.Division for monitoring group, monitors in group first
All wire clamps belong to same transmission line of electricity, and an only two level wire clamp in a monitoring group, other are all level-one wire clamps, and
Level-one wire clamp and two level wire clamp are positioned at same arranged in a straight line.In view of cost problem, the wireless receiving and dispatching distance of level-one wire clamp can not
Can be far, otherwise the price of this radio receiving transmitting module is very high.
Since power transmission line is all substantially straight line, wire clamp is also arranged in a straight line on power transmission line.The nothing of one wire clamp
Beta radiation scope can only cover next wire clamp, can not cover lower two wire clamps, this design is more cost-effective.
Each wire clamp collection one data packet of generation, when data packet includes circuit number, group number, wire clamp ID, sampling
Between stamp and sampled data, the sampled data include at least power transmission line temperature data.The circuit number is defeated where wire clamp
The numbering of electric wire, the group number are the monitoring group is which group on power transmission line, and the wire clamp ID exists for wire clamp
Monitor the numbering in group, the temperature data of the sampled data at least bag power transmission line.
Step S2, data packet is sent to downstream wire clamp by radio receiving transmitting module after upstream wire clamp generation data packet, under
Trip wire clamp continues downstream to send in the lump after receiving data packet together with the data packet oneself generated, until being located at end secondary line
Clamping connection receives the data packet of all level-one wire clamps.
Step S3, the data packet of the data packet oneself generated and all level-one wire clamps is passed through network data mould by two level wire clamp
Block is sent to background server.
Wire clamp in monitoring group all gathered data and can generate data packet, for level-one wire clamp, the generation of upstream wire clamp
Data packet is sent to downstream wire clamp, transmits send successively.As shown in Figure 1, it is illustrated that in have 3 level-one wire clamps, from a left side to there is data
The beginning is unwrapped to transmit send successively, the first from left wire clamp sends data packets to the second from left wire clamp, the second from left wire clamp together with the data packet of oneself and
The data packet of the first from left wire clamp is sent to left three wire clamps, and left three wire clamps are together with the data packet of oneself and the data packet of the first from left the second from left wire clamp
Send to two level wire clamp, two level elder generation wire clamp and send the data packet of the data packet of oneself and three level-one wire clamps to background service
Device.
Step S4, after background server receives data packet, returned according to circuit number, group number and wire clamp ID
Class, obtains the temperature variations for the power transmission line that all wire clamps under transmission line of electricity in all monitoring groups detect.
Background server establishes database, and subregion deposits the gathered data of each wire clamp, with circuit number, group number and
Wire clamp ID carries out subregion.For example the change of each wire clamp gathered data can also be shown on the display terminal of background server
Curve.
Step S5, alarm is sent when background server monitors that temperature data therein exceedes expected.
Background server finds to send alarm when line temperature exceeds expected.
The embodiment of the present invention is only with the network data model for safeguarding two level wire clamp, i.e. two level wire clamp flow card.For using
The flow of identical quantity, the expense that a flow card produces is to be far below multiple flow cards.And now without limit flow card
Slowly popularize, the cost-effective effect of the present invention can become apparent from.
In such scheme, the sample frequency of each wire clamp is constant, and this sample mode is not intelligent enough, as a kind of excellent
Mode is selected, the embodiment of the present invention can also carry out that sampling frequency is adjusted flexibly according to the current conditions and ambient temperature situations of power transmission line
Rate.
Assuming that background server receives the data packet of a wire clamp, it is assumed that wherein wire clamp ID is IDx, hits therein
According to the temperature data t including current power transmission line, the present current value I of power transmission line is further includedx, ambient temperature value tx, in background service
Device end, each circuit number correspond to the reference current value I of a transmission line of electricity0.Due to effect of the different power transmission lines in power grid
May be different, therefore the reference current value of different power transmission lines may be different, the one of reference current value historical statistics described here
Current average in the section time (generally 1 year).If the electric current for the power transmission line that current wire clamp detects is higher, illustrate at this time
Power transmission line is in high load condition, it is easier to high temperature failure occurs.Therefore need to increase sample frequency in this case, otherwise in electricity
Flow it is small in the case of, sample frequency can be reduced.
Assuming that default nominal temperature is t0, nominal temperature here is normal environment temperature, generally 25 DEG C.Order is dynamic
State threshold valueα is regulation coefficient, and value range is 1≤α≤1.5, F (tx,t0) it is temperature funtion,
As -10 DEG C≤tx-t0At≤10 DEG C, F (tx,t0)=1, works as tx-t0>At 10 DEG C, F (tx,t0)=2, work as t0-tx>10 DEG C, F (tx,
t0)=0.5.Assuming that α=1, t0=25 DEG C, then environment temperature is in 15-35 DEG C of temperature range, and temperature funtion value is 1, if ring
Border temperature is more than 35 DEG C, and temperature funtion value is 2, if environment temperature is less than 15 DEG C, temperature funtion value is 0.5.In the present invention, move
State threshold value k has reacted the sample frequency situation of wire clamp, when power line current it is higher and or environment temperature it is higher, explain the situation down should
The sample frequency of the raising wire clamp, therefore the temperature data of this period should more cause concern, even if higher sample frequency higher
It was found that the temperature problem of power transmission line.When electric current is relatively low or environment temperature is relatively low, it may be not easy temperature problem occur at this time, because
This can reduce sample frequency.For this reason, the present embodiment provides dynamic thresholdIt can be seen that dynamic threshold k with
Current value Ix, ambient temperature value txFor proportional relationship, tally with the actual situation.
Background server receives the data packet of wire clamp IDx uploads, after calculating dynamic threshold k, then generates the wire clamp
Sample frequency f, in the present embodiment, as k≤0.5, f=f0, when 0.5<During k≤0.8, f=1.5f0, when 0.8<During k≤2, f
=3f0, work as k>When 2, f=6f0, wherein f0For default sample frequency.Assuming that the environment temperature that current wire clamp detects is 25 DEG C,
So F (tx,t0)=1, it is assumed that α=1, if the power line current I detectedx=2I0, then k=1.41, f=3f0, illustrate needs
Pay attention to temperature conditions at this time, sample frequency is improved to 3 times.If Ix=0.2I0, then k=0.44, f=f0, keep original relatively low
Sample frequency.If Ix=5I0, then k=2.24, f=6f0, more close supervision temperature change is needed at this time, it is necessary to will adopt
Sample frequency upgrading is to 6 times.After sample frequency is calculated, background server is according to the circuit number and group received in data packet
Group # finds purpose two level wire clamp, then sends obtained sample frequency f and IDx to purpose two level wire clamp, purpose two level
Wire clamp compares itself wire clamp ID and IDx, if identical, purpose two level wire clamp is directly according to f=6f0Sampled, if it is different,
Then purpose two level wire clamp sends IDx, sample frequency f to the level-one wire clamp of upstream, and level-one wire clamp continues identical comparison, if different
Forwarded upstream is then carried out, until finding the wire clamp that wire clamp ID is IDx, which performs data sampling according to sample frequency f.When
When the temperature data of continuous three sampling times is all higher than desired temperature, then alarm is provided on the display terminal of background server
Prompting.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of remote monitoring method based on thermometric wire clamp, it is characterised in that the thermometric wire clamp is divided into level-one wire clamp and two
Level wire clamp, multiple level-one wire clamps and a two level wire clamp form a monitoring group, and the wire clamp monitored in group is arranged in a straight line, and
Two level wire clamp is located at least significant end arranged in a straight line, and all wire clamps are both provided with radio receiving transmitting module so that can between adjacent wire clamp
With transceiving data and instruction, the two level wire clamp further includes network data model, the two level wire clamp and background server network
Connection, the remote monitoring method comprise the following steps：
For each monitoring group, each wire clamp carries out power transmission line data sampling generation data packet, and the data packet includes line
Road numbering, group number, wire clamp ID, sampling time stamp and sampled data, the sampled data include at least the temperature of power transmission line
Data；
Data packet is sent to downstream wire clamp, line downstream clamping connection by radio receiving transmitting module after the wire clamp generation data packet of upstream and is received
Data packet after data packet together with oneself generation continues downstream to send in the lump, until being received positioned at end secondary wire clamp all
The data packet of level-one wire clamp；
Two level wire clamp sends the data packet and the data packet of all level-one wire clamps that oneself is generated to rear by network data model
Platform server；
After background server receives data packet, sorted out according to circuit number, group number and wire clamp ID, obtain power transmission line
The temperature variations for the power transmission line that all wire clamps under road in all monitoring groups detect；
Alarm is sent when background server monitors that temperature data therein exceedes expected.
2. the remote monitoring method as claimed in claim 1 based on thermometric wire clamp, it is characterised in that for a wire clamp sampling life
Into data packet, it is assumed that wire clamp ID is IDx, and sampled data therein includes the temperature data t of current power transmission line, further includes transmission of electricity
The present current value I of linex, ambient temperature value tx, at background server end, each circuit number corresponds to the base of a transmission line of electricity
Quasi- current value I0, it is assumed that default nominal temperature is t0, then dynamic thresholdα is regulation coefficient, is taken
Value scope is 1 to 1.5, F (tx,t0) it is temperature funtion, as -10 DEG C≤tx-t0At≤10 DEG C, F (tx,t0)=1, works as tx-t0>10
DEG C when, F (tx,t0)=2, work as t0-tx>10 DEG C, F (tx,t0)=0.5, background server is according to the corresponding dynamics of current wire clamp IDx
Threshold value k generates the sample frequency f of the wire clamp, as k≤0.5, f=f0, when 0.5<During k≤0.8, f=1.5f0, when 0.8<k≤2
When, f=3f0, work as k>When 2, f=6f0, wherein f0For default sample frequency, background server is according to the line received in data packet
Road is numbered and group number finds purpose two level wire clamp, then sends obtained sample frequency f and IDx to purpose two level line
Folder, purpose two level wire clamp compares itself wire clamp ID and IDx, if it is different, then sending IDx, sample frequency f to the level-one of upstream
Wire clamp, level-one wire clamp continue identical comparison, until finding the wire clamp that wire clamp ID is IDx, which performs number according to sample frequency f
According to sampling.
3. the remote monitoring method as claimed in claim 2 based on thermometric wire clamp, it is characterised in that when continuous three sampling times
Temperature data when being all higher than desired temperature, then provide alarm prompt on the display terminal of background server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017463.9A CN107966220B (en) | 2017-10-26 | 2017-10-26 | A kind of remote monitoring method based on thermometric wire clamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017463.9A CN107966220B (en) | 2017-10-26 | 2017-10-26 | A kind of remote monitoring method based on thermometric wire clamp |
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| CN107966220A true CN107966220A (en) | 2018-04-27 |
| CN107966220B CN107966220B (en) | 2019-08-16 |
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| CN201711017463.9A Active CN107966220B (en) | 2017-10-26 | 2017-10-26 | A kind of remote monitoring method based on thermometric wire clamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109186776A (en) * | 2018-09-10 | 2019-01-11 | 广州供电局有限公司 | Detection method, device and the detection device of transmission line of electricity wire clamp fever |
| CN109186804A (en) * | 2018-08-06 | 2019-01-11 | 南瑞集团有限公司 | A kind of excess temperature operation risk warning device of overhead transmission line parallel groove clamp |
| CN112415269A (en) * | 2020-10-20 | 2021-02-26 | 国网辽宁省电力有限公司 | Loop impedance calculation method based on high-frequency acquisition of HPLC module |
| CN112564282A (en) * | 2020-12-02 | 2021-03-26 | 广东电网有限责任公司江门供电局 | Integrated monitoring alarm device and monitoring method for relay protection device |
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| CN202631128U (en) * | 2012-06-07 | 2012-12-26 | 宁夏电力公司吴忠供电局 | Wireless temperature measuring system for equipment wire clamp of power transformer substation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186804A (en) * | 2018-08-06 | 2019-01-11 | 南瑞集团有限公司 | A kind of excess temperature operation risk warning device of overhead transmission line parallel groove clamp |
| CN109186776A (en) * | 2018-09-10 | 2019-01-11 | 广州供电局有限公司 | Detection method, device and the detection device of transmission line of electricity wire clamp fever |
| CN112415269A (en) * | 2020-10-20 | 2021-02-26 | 国网辽宁省电力有限公司 | Loop impedance calculation method based on high-frequency acquisition of HPLC module |
| CN112564282A (en) * | 2020-12-02 | 2021-03-26 | 广东电网有限责任公司江门供电局 | Integrated monitoring alarm device and monitoring method for relay protection device |
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| Publication number | Publication date |
|---|---|
| CN107966220B (en) | 2019-08-16 |
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