CN102175597A - On-line monitoring method of metro stray current corrosion on-line monitoring system - Google Patents
On-line monitoring method of metro stray current corrosion on-line monitoring system Download PDFInfo
- Publication number
- CN102175597A CN102175597A CN 201110027687 CN201110027687A CN102175597A CN 102175597 A CN102175597 A CN 102175597A CN 201110027687 CN201110027687 CN 201110027687 CN 201110027687 A CN201110027687 A CN 201110027687A CN 102175597 A CN102175597 A CN 102175597A
- Authority
- CN
- China
- Prior art keywords
- line monitoring
- information
- stray current
- signals collecting
- communication transmission
- 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
- 238000012544 monitoring process Methods 0.000 title claims abstract description 55
- 238000005260 corrosion Methods 0.000 title claims abstract description 40
- 230000007797 corrosion Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 238000004891 communication Methods 0.000 claims abstract description 52
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 230000010365 information processing Effects 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 27
- 230000007704 transition Effects 0.000 claims abstract description 24
- 230000010287 polarization Effects 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 claims description 28
- 238000012360 testing method Methods 0.000 claims description 22
- 238000005070 sampling Methods 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 238000013341 scale-up Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention relates to an on-line monitoring method of a metro stray current corrosion on-line monitoring system, belonging to the field of protection of metro metal structures. The metro stray current corrosion on-line monitoring system comprises an information acquisition terminal, an information communication transmission system and an information processing terminal, wherein the information acquisition terminal is connected with the information communication transmission system in a field bus way; and the information communication transmission system is connected with the information processing terminal through a network interface and a USB (Universal Serial Bus) or a serial port. The stray current corrosion on-line monitoring method comprises methods for monitoring various parameters, i.e. polarization potentials of an underground metal structure, track voltages, concrete resistivity, rail longitudinal resistance and track and ground transition resistance. The metro stray current corrosion on-line monitoring system can be used for measuring and analyzing the potential distribution of steel racks and ground metal structures on line; in addition, the stray current corrosion on-line monitoring method is effectively combined with the metro stray current corrosion on-line monitoring system into a whole; and the on-line monitoring method disclosed by the invention has the advantages of overall monitoring parameters, high instantaneity of the metro stray current corrosion on-line monitoring system and stability and reliability of information transmission and can be widely used for a metro stray current corrosion monitoring and protecting system.
Description
Technical field
The present invention relates to the monitoring and the protection field of metro stray current corrosion, relate in particular to a kind of on-line monitoring metro stray current corrosion condition and the method for corrosion influence factor and the realization of system, mainly apply to subway, light rail aspect.
Background technology
Direct current supply is adopted in the power supply of subway or light rail systems usually, utilize rail as the line of return, if rail insulation over the ground descends, the electric current that then flows through rail is very easy to leak into the earth, near the buried metal works thereby formation stray current, stray electrical fail to be convened for lack of a quorum and cause is as the corrosion of running water pipe, gas pipe, cable and reinforced concrete metal construction, cause serious consequence, so should reduce stray current corrosion as far as possible.At the subway construction initial stage, because every safeguard procedures such as insulation are relatively good, the stray current corrosion situation can be too not serious, but As time goes on, the influence of rugged surroundings such as the interior humidity of subway tunnel, the stray current corrosion situation can be more and more serious, and therefore monitoring stray current causes the metal erosion situation, is the problem that must consider in the subway construction.Metro stray current corrosion at present be by measure the metal construction or the polarized potential of pipeline, the track current potential analysis-by-synthesis of rail obtains.Usually the monitoring of subway stray current corrosion, the measuring method of instrument, field wiring is carried in many employings temporarily.This method mainly contains following drawback:
1, stray current mainly is the result that the electrochemical reaction long term produces to the corrosion of tunnel agent structure steel and metal pipe line.And on-the-spot haywire wiring is measured, and can not reflect the subway stray current corrosion situation of whole working times, and measurement result has certain randomness, and confidence level is not high;
2, owing to be local measurement, measurement result can not reflect whole subway line stray current distribution situation;
3, the condition of work of in-site measurement and tunnel space restriction is made troubles and danger to measurement;
4, cause stray current distribution reason excessive and the corrosion aggravation to be not easy to differentiate.
Summary of the invention
Technical matters: the object of the invention provides a kind of when subway is normally runed, the on-line monitoring method of metro stray current corrosion on-line monitoring system, can monitor the buried metal structure stray current corrosion situation and the corrosion influence factor of subway tunnel in real time, personnel provide foundation for the subway operation maintenance, guarantee the safe operation of subway system.
Technical scheme: technical scheme of the present invention is: this monitoring method is based on an on-line monitoring system, this on-line monitoring system be linked in sequence information acquisition terminal, information communication transmission system and the information processing terminal; Wherein information acquisition terminal comprises polarized potential signals collecting, railway voltage signals collecting, concrete resistivity signals collecting, track longitudinal electrical resistance and rail ground transition resistance signals collecting and signal analysis and processing system; The information communication transmission system is made up of fieldbus or fieldbus and subway system LAN (Local Area Network); The information processing terminal comprises computing machine, print out equipment and movable storage device;
Wherein information acquisition terminal links to each other by the information communication transmission system with the information processing terminal, the information acquisition terminal is connected with the mode of information communication transmission system by fieldbus, and the information processing terminal is connected by network interface, USB or serial ports with the information communication transmission system;
Choose buried metal mws polarization current potential, railway voltage, concrete resistivity and track longitudinal electrical resistance and rail ground transition resistance are as monitoring parameter, finish on-line measurement by the information acquisition terminal to each parameter, data after the measurement are passed to the information processing terminal by the information communication transmission system, the information processing terminal receives in real time the information that transmitted by the information communication transmission system and with the information typing Relational database that receives, and, provide the statistics of subway metal construction corrosion related data to the data based requirement of the input database processing of classifying, inquiry, chart shows and printout; This information processing terminal is transferred to the information acquisition terminal with information by the information communication transmission system as required.
Described polarized potential signals collecting comprises the extraction and the polarized potential signals collecting of polarized potential signal; Wherein the polarized potential signal sampling is the potential difference (PD) between near the test buried metal structure leading-out terminal contrast electrode leading-out terminal with being embedded in this leading-out terminal, and the polarized potential signal pickup assembly is used to realize the on-line measurement of polarized potential.
Described railway voltage signals collecting comprises railway voltage signals sampling and railway voltage signals collecting, wherein the railway voltage signal sampling is the potential difference (PD) between test tracks and near its buried metal structure leading-out terminal, and the railway voltage signal pickup assembly is used to realize the on-line measurement of railway voltage signal.
Described concrete resistivity signals collecting comprises test concrete resistivity signals sampling and concrete resistivity signals collecting, wherein the concrete resistivity signal sampling is that signal pickup assembly according to Wenner four-electrode method principle arrangement carries out signal extraction, and the concrete resistivity signal pickup assembly is used to realize the on-line measurement of concrete resistivity.
Track longitudinal electrical resistance and rail ground transition resistance signals collecting comprise track longitudinal electrical resistance and rail ground transition resistance signals sampling and track longitudinal electrical resistance and rail ground transition resistance signals collecting; Track longitudinal electrical resistance and rail ground transition resistance signals collecting are the theoretical formulas that distributes according to metro stray current, and in the interval of train and electric substation's distance L, railway voltage and the electric current of any point x are respectively
Wherein, Rg is a track rail ground transition resistance, and R is the track longitudinal electrical resistance, and a is a scale-up factor, and its value is
The total current that I records for the point that refluxes, L is for to the distance of level sensor to the point that refluxes, when known measurement point apart from x=l
1Situation under, promptly the monitoring point is l apart from the distance of electric substation
1, the track current potential u (x) and the track current i (x) of monitoring point can measure, and arrange along the line at track and measure the sensor that train puts in place, and train passes through to level sensor can record distance L, and the solving equation group can obtain R and Rg.
Beneficial effect: the invention has the beneficial effects as follows, native system has been abandoned traditional stray current corrosion fully and has been monitored the data that the method for testing that is adopted does not need to use each test point of manual measurement, system designs based on the principle of communication network, and networking is simple and convenient.The scene installs testing apparatus, and communication network is communicated with functions such as back whole test process, data recording, storage, analyzing and processing and demonstration printout to be finished by monitoring system fully, easy to operate.
Description of drawings
Fig. 1 is that system of the present invention constitutes block diagram;
Fig. 2 is that information acquisition terminal of the present invention constitutes block diagram;
Fig. 3 is the group network system figure of acquisition system of the present invention;
Fig. 4 is information transmission process figure of the present invention;
Fig. 5 is the implementing procedure block scheme of application process of the present invention.
Embodiment
Among Fig. 1, information acquisition terminal, information communication transmission system connect by the fieldbus mode, and the information communication transmission system and the information processing terminal carry out the information transmission by USB, network interface or serial mode.
Among Fig. 2, the information acquisition terminal comprises the signal that the needs of intelligence sensor are gathered, and acquired signal has the signal of polarized potential signal, track electric potential signal, test tracks longitudinal electrical resistance and rail ground transition resistance and the signal of test concrete resistivity.The leading-out terminal of all signals links to each other with the corresponding signal connection terminal of intelligent sensing respectively.
Among Fig. 3, the information acquisition terminal links to each other by connection with the information communication transmission system, and the information communication transmission system links to each other with the information acquisition terminal by fieldbus, and the quantity of information acquisition terminal is determined according to field condition.
Among Fig. 4, the information processing terminal sends information to the information communication transmission system, the information communication transmission system information of receiving judges that if require the information communication transmission system to give the information processing terminal with information transmission, then the information communication transmission system is given the information processing terminal with related information transmission; If require information communication system to give the information acquisition acquisition terminal, then give the information acquisition terminal with related information transmission with information transmission.When receiving information communication transmission system signal transmitted, the information acquisition terminal judges, give the information communication transmission system if require the information acquisition terminal with information transmission, then relevant information is transmitted, if require the information acquisition terminal to carry out a certain instruction, then information acquisition terminal is made corresponding processing.
A kind of distribution of on-line monitoring metro stray current and the method for corrosion situation are provided, and stray current disturbance state and the situation that stray current corrosion takes place can be synthetically analyzed in the distribution of on-line measurement and analysis rail, the earth metal construction current potential.The measurement of subway buried metal structure above earth potential need use long effective reference electrode as survey sensor.Under the situation that does not have the stray current disturbance, measure natural ontology current potential U
0, when having the situation of stray current disturbance, measure current potential and natural ontology current potential U occurs departing from
0Situation, the current potential of surveying is U
1, its off-set value is Δ U.Because corrosion is the result of a long term, and moment stray current variation be chaotic, so measure the moment metal construction to the direct corrosion situation of reflected measurement point stray current of the voltage of contrast electrode, be offset natural ontology current potential U within a certain period of time so should measure calculating
0Forward mean value Ua (+) and negative sense mean value Ua (-), the meter evaluation time was generally 30 minutes.And the leakage of subway system stray current is subjected to the influence of track current potential very big, therefore also should measure monitoring to the track current potential, wherein adopts rail that the voltage of buried metal structure is represented the track current potential.The transient change of track current potential is very big, except measuring the instantaneous orbit current potential, calculates the maximal value V of the time inner orbit current potential of metal pair earth potential mean value in measurement in the actual measurement process
Max
Wherein said natural ontology current potential U
0, transient potential U
1, forward mean value Ua (+) and negative sense mean value Ua (-), track transient potential V
1, the maximal value V in the Measuring Time
MaxOn-line measurement calculate.Be to choose measurement point at the subway construction initial stage, this measurement point is imbedded a long effective reference electrode on solid concrete roabed, is used to measure the voltage of current drainage net and solid concrete roabed contrast electrode; Also imbed a long effective reference electrode at the sidewall in tunnel, be used for the voltage of measurement structure steel and sidewall contrast electrode.The track current potential is the voltage of measuring between track and the side wall construction steel.Installation has the intelligent monitoring device of measuring computing function, above parameter is measured calculating, this intelligent monitoring device has the standard computer communication interface, can become monitoring network in subway tunnel layout along the line, and finally all Monitoring Data show at central control room.
Technical scheme of the present invention provides the on-line monitoring method of a kind of track rail ground transition resistance and longitudinal electrical resistance, and according to the theoretical formula that metro stray current distributes, in the interval of train and electric substation's distance L, railway voltage and the electric current of any point x are respectively:
Wherein, Rg is a track rail ground transition resistance, and R is the track longitudinal electrical resistance, the total current that I records for the point that refluxes, and L is for arriving the distance of level sensor to the point that refluxes.When known measurement point apart from x=l
1Situation under, promptly the monitoring point is l apart from the distance of electric substation
1, the track current potential u (x) and the track current i (x) of monitoring point can measure, and arrange along the line at track and measure the sensor that train puts in place, and train passes through to the distance L that level sensor can be surveyed, and the group of solving an equation can obtain R and Rg.
Technical scheme of the present invention provides a kind of on-line monitoring method of concrete resistivity, bury four used electrodes of test underground according to Wenner four-electrode method principle, adjacent two equidistant arrangements of electrode point-blank, suppose that adjacent two interelectrode distances are S, then the electrode place of burying underground concrete resistivity is:
Wherein V and I are can be by measuring its size.
Technical scheme of the present invention provides a kind of metro stray current corrosion monitoring system, and this system comprises information acquisition terminal, information communication transmission system and the information processing terminal.The information acquisition terminal is connected by fieldbus with the information communication transmission system carries out message exchange, and the information communication transmission system and the information processing terminal carry out message exchange by transmission line of information.
The wherein said information processing terminal comprises computing machine, print out equipment and movable storage device, connects by data line therebetween; Be connected by USB, serial ports or network interface mode between this information processing terminal and the information communication transmission system and carry out information transmission.The information that the information communication transmission system that this information processing terminal can receive in real time transmits also will receive information typing Relational database, to the data based requirement of the input database processing of classifying, can provide statistics, inquiry, the chart of metro stray current corrosion related data to show and printout; This information processing terminal can be given the information communication transmission system with information transmission as required.
Wherein said information communication transmission system is made up of fieldbus or fieldbus and subway system LAN (Local Area Network), and the fieldbus mode comprises RS485, CAN net or RS422 mode.
Wherein said information acquisition terminal comprises polarized potential signals collecting, railway voltage signals collecting, concrete resistivity signals collecting, track longitudinal electrical resistance and rail ground transition resistance signals collecting and signal analysis and processing system.
Wherein said polarized potential signals collecting comprises polarized potential signals sampling and polarized potential signal pickup assembly.Wherein the polarized potential signal sampling is the potential difference (PD) between near the test buried metal structure leading-out terminal contrast electrode leading-out terminal with being embedded in buried metal structure leading-out terminal.
Wherein said railway voltage signals collecting comprises railway voltage signals sampling and railway voltage signal pickup assembly.Wherein the railway voltage signal sampling is the potential difference (PD) between test tracks and near its buried metal structure leading-out terminal.
Wherein said concrete resistivity signals collecting is characterized in that: the concrete resistivity signals collecting comprises test concrete resistivity signals sampling and concrete resistivity signal pickup assembly.Wherein the concrete resistivity signal sampling is that signal pickup assembly according to Wenner four-electrode method principle arrangement carries out signal extraction.
Wherein said track longitudinal electrical resistance and rail ground transition resistance signals collecting comprise track longitudinal electrical resistance and rail ground transition resistance signals sampling and track longitudinal electrical resistance and rail ground transition resistance signal pickup assembly.Track longitudinal electrical resistance and rail ground transition resistance signal are to take a sample according to the signal of the required test of theoretical formula of metro stray current distribution.
Technical scheme of the present invention also provides a kind of a kind of application process of metro stray current corrosion on-line monitoring,
(1) buries contrast electrode at a certain distance underground in subway solid concrete roabed and tunnel-side along the line, bury underground contrast electrode near buried metal on the welding signal leading-out terminal, the signal between the signal leading-out terminal of this signal leading-out terminal and contrast electrode is used as measuring polarized potential;
(2) bury underground contrast electrode near rail on the welding signal exit, this signal exit and buried metal signal leading-out terminal are used as measuring the track current potential;
(3) bury underground contrast electrode near require to bury underground the electrode of concrete resistance test usefulness according to the Wenner four-electrode method, draw four signal testing terminals;
(4) bury underground contrast electrode near the signal terminal of extraction orbit longitudinal electrical resistance and rail ground transition resistance test usefulness on the rail.
(5) leading-out terminal with all signals links to each other with corresponding signal pickup assembly input signal connection terminal in the information acquisition terminal.
(6) the information acquisition terminal is connected with the method for information communication transmission system by fieldbus, is connected by connection between information communication transmission system and the information processing terminal.
(7) useful signal of each test point all is kept in the computing machine of the information processing terminal, by the information processing terminal can add up the information of each test point, inquiry, printout.
Examples of implementation
The information communication transmission system is selected the RS485 bus mode for use, and information communication transmission system and information acquisition terminal adopt RS232 serial communication mode.As shown in Figure 5, the information communication transmission system comprises communication converter and signal adapter, adopt the RS232 serial communication between the information processing terminal and the communication converter, gather the RS485 communication modes between signal adapter and the communication converter, signal changes breakout box and the information acquisition terminal adopts the RS485 communication modes.Each signal converting breath acquisition terminal of taking a message generally is no more than 32.
Claims (5)
1. the on-line monitoring method of metro stray current corrosion on-line monitoring system, it is characterized in that: this monitoring method is based on an on-line monitoring system, this on-line monitoring system be linked in sequence information acquisition terminal, information communication transmission system and the information processing terminal; Wherein information acquisition terminal comprises polarized potential signals collecting, railway voltage signals collecting, concrete resistivity signals collecting, track longitudinal electrical resistance and rail ground transition resistance signals collecting and signal analysis and processing system; The information communication transmission system is made up of fieldbus or fieldbus and subway system LAN (Local Area Network); The information processing terminal comprises computing machine, print out equipment and movable storage device;
Wherein information acquisition terminal links to each other by the information communication transmission system with the information processing terminal, the information acquisition terminal is connected with the mode of information communication transmission system by fieldbus, and the information processing terminal is connected by network interface, USB or serial ports with the information communication transmission system;
Choose buried metal mws polarization current potential, railway voltage, concrete resistivity and track longitudinal electrical resistance and rail ground transition resistance are as monitoring parameter, finish on-line measurement by the information acquisition terminal to each parameter, data after the measurement are passed to the information processing terminal by the information communication transmission system, the information processing terminal receives in real time the information that transmitted by the information communication transmission system and with the information typing Relational database that receives, and, provide the statistics of subway metal construction corrosion related data to the data based requirement of the input database processing of classifying, inquiry, chart shows and printout; This information processing terminal is transferred to the information acquisition terminal with information by the information communication transmission system as required.
2. according to the on-line monitoring method of the described metro stray current corrosion of claim 1 on-line monitoring system, it is characterized in that described polarized potential signals collecting comprises the extraction and the polarized potential signals collecting of polarized potential signal; Wherein the polarized potential signal sampling is the potential difference (PD) between near the test buried metal structure leading-out terminal contrast electrode leading-out terminal with being embedded in this leading-out terminal, and the polarized potential signal pickup assembly is used to realize the on-line measurement of polarized potential.
3. according to the on-line monitoring method of the described metro stray current of claim 1 corrosion on-line monitoring system, it is characterized in that described railway voltage signals collecting comprises railway voltage signals sampling and railway voltage signals collecting, wherein the railway voltage signal sampling is the potential difference (PD) between test tracks and near its buried metal structure leading-out terminal, and the railway voltage signal pickup assembly is used to realize the on-line measurement of railway voltage signal.
4. according to the on-line monitoring method of the described metro stray current of claim 1 corrosion on-line monitoring system, it is characterized in that described concrete resistivity signals collecting comprises test concrete resistivity signals sampling and concrete resistivity signals collecting, wherein the concrete resistivity signal sampling is that signal pickup assembly according to Wenner four-electrode method principle arrangement carries out signal extraction, and the concrete resistivity signal pickup assembly is used to realize the on-line measurement of concrete resistivity.
5. according to the on-line monitoring method of the described metro stray current corrosion of claim 1 on-line monitoring system, it is characterized in that: track longitudinal electrical resistance and rail ground transition resistance signals collecting comprise track longitudinal electrical resistance and rail ground transition resistance signals sampling and track longitudinal electrical resistance and rail ground transition resistance signals collecting; Track longitudinal electrical resistance and rail ground transition resistance signals collecting are the theoretical formulas that distributes according to metro stray current, and in the interval of train and electric substation's distance L, railway voltage and the electric current of any point x are respectively
Wherein, Rg is a track rail ground transition resistance, and R is the track longitudinal electrical resistance, and a is a scale-up factor, and its value is
The total current that I records for the point that refluxes, L is for to the distance of level sensor to the point that refluxes, when known measurement point apart from x=l
1Situation under, promptly the monitoring point is l apart from the distance of electric substation
1, the track current potential u (x) and the track current i (x) of monitoring point can measure, and arrange along the line at track and measure the sensor that train puts in place, and train passes through to level sensor can record distance L, and the solving equation group can obtain R and Rg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110027687 CN102175597A (en) | 2011-01-21 | 2011-01-21 | On-line monitoring method of metro stray current corrosion on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110027687 CN102175597A (en) | 2011-01-21 | 2011-01-21 | On-line monitoring method of metro stray current corrosion on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102175597A true CN102175597A (en) | 2011-09-07 |
Family
ID=44518804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110027687 Pending CN102175597A (en) | 2011-01-21 | 2011-01-21 | On-line monitoring method of metro stray current corrosion on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102175597A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419558A (en) * | 2011-11-15 | 2012-04-18 | 深圳市华力特电气股份有限公司 | Metro stray current one-way conduction control method, and device for the same |
| CN102590600A (en) * | 2012-01-06 | 2012-07-18 | 徐州润泽电气有限公司 | Stray current sensor of subway reflux system |
| CN102692885A (en) * | 2012-05-15 | 2012-09-26 | 西安理工大学 | Monitoring drainage control method of stray current |
| CN103260263A (en) * | 2013-04-15 | 2013-08-21 | 暨南大学 | Metro stray current wireless monitoring system and method |
| CN106199201A (en) * | 2016-09-20 | 2016-12-07 | 中铁第勘察设计院集团有限公司 | Urban track traffic rail ground transition resistance test system and method |
| CN106771636A (en) * | 2017-03-09 | 2017-05-31 | 成都瑞尔维轨道交通技术有限公司 | Rail transition resistance detecting system and method |
| CN106841807A (en) * | 2016-12-12 | 2017-06-13 | 深圳市华力特电气有限公司 | A kind of method and system of real-time measurement subway rail and ground transition resistance |
| CN107632521A (en) * | 2017-08-30 | 2018-01-26 | 中国矿业大学 | A kind of potentiostat control strategy based on decision tree and neutral net |
| CN107884636A (en) * | 2017-09-27 | 2018-04-06 | 北京交通大学 | Track resistance dynamic simulator system |
| CN108562782A (en) * | 2018-07-17 | 2018-09-21 | 国网湖南省电力有限公司 | A kind of acquisition methods of stray electrical current and the detecting system of stray electrical current |
| CN108646079A (en) * | 2018-06-29 | 2018-10-12 | 苏州大学 | Lower stray electrical current non-contact detection method coexists in a kind of different buried depth pipeline |
| CN110836922A (en) * | 2019-11-18 | 2020-02-25 | 上海地铁维护保障有限公司供电分公司 | Device for detecting working state of reference electrode and working method thereof |
| WO2020103394A1 (en) * | 2018-11-19 | 2020-05-28 | 中国矿业大学 | Method for monitoring location of insulation damage of subway/coal-mine return track and transition resistance thereof |
| CN112230040A (en) * | 2020-10-13 | 2021-01-15 | 广州市扬新技术研究有限责任公司 | Stray current evaluation method for calculating direct current traction power supply system |
| CN112379301A (en) * | 2020-09-15 | 2021-02-19 | 中国测试技术研究院机械研究所 | Track stray current and transition resistance online monitoring method and system thereof |
| CN114154414A (en) * | 2021-11-30 | 2022-03-08 | 徐州中矿传动轨道科技有限公司 | Cloud computing-based subway stray current leakage high-risk interval identification method and system and storage medium |
| CN114325472A (en) * | 2021-12-23 | 2022-04-12 | 徐州和纬信电科技有限公司 | Stray current monitoring system based on dynamic and static automatic switching measurement function |
| CN114778984A (en) * | 2022-04-28 | 2022-07-22 | 西南交通大学 | Method for detecting stray current of transformer substation based on earth surface potential change |
| CN115096806A (en) * | 2022-06-21 | 2022-09-23 | 徐州中矿传动轨道科技有限公司 | Method and system for identifying stray current corrosion high-risk area of tunnel steel-concrete structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2418488Y (en) * | 2000-04-12 | 2001-02-07 | 王志宏 | Automatic monitoring device for stray current of subway |
| CN2614347Y (en) * | 2003-04-11 | 2004-05-05 | 中国矿业大学 | On-line monitoring device for stray current of subway |
| KR20090047279A (en) * | 2007-11-07 | 2009-05-12 | 한국전기연구원 | Distributed electric corrosion protection system and the method for mitigating stray current near the subway |
-
2011
- 2011-01-21 CN CN 201110027687 patent/CN102175597A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2418488Y (en) * | 2000-04-12 | 2001-02-07 | 王志宏 | Automatic monitoring device for stray current of subway |
| CN2614347Y (en) * | 2003-04-11 | 2004-05-05 | 中国矿业大学 | On-line monitoring device for stray current of subway |
| KR20090047279A (en) * | 2007-11-07 | 2009-05-12 | 한국전기연구원 | Distributed electric corrosion protection system and the method for mitigating stray current near the subway |
Non-Patent Citations (1)
| Title |
|---|
| 《腐蚀科学与防护技术》 20070531 李威，等 地铁杂散电流腐蚀的模糊综合评价方法研究 221－223 1－5 第19卷, 第3期 * |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419558A (en) * | 2011-11-15 | 2012-04-18 | 深圳市华力特电气股份有限公司 | Metro stray current one-way conduction control method, and device for the same |
| CN102590600A (en) * | 2012-01-06 | 2012-07-18 | 徐州润泽电气有限公司 | Stray current sensor of subway reflux system |
| CN102692885A (en) * | 2012-05-15 | 2012-09-26 | 西安理工大学 | Monitoring drainage control method of stray current |
| CN103260263A (en) * | 2013-04-15 | 2013-08-21 | 暨南大学 | Metro stray current wireless monitoring system and method |
| CN106199201B (en) * | 2016-09-20 | 2023-06-27 | 中铁第一勘察设计院集团有限公司 | Urban rail transit rail-ground transition resistance test system and method thereof |
| CN106199201A (en) * | 2016-09-20 | 2016-12-07 | 中铁第勘察设计院集团有限公司 | Urban track traffic rail ground transition resistance test system and method |
| CN106841807A (en) * | 2016-12-12 | 2017-06-13 | 深圳市华力特电气有限公司 | A kind of method and system of real-time measurement subway rail and ground transition resistance |
| CN106841807B (en) * | 2016-12-12 | 2019-12-24 | 深圳市华力特电气有限公司 | Method and system for measuring transition resistance between subway running rail and ground in real time |
| CN106771636A (en) * | 2017-03-09 | 2017-05-31 | 成都瑞尔维轨道交通技术有限公司 | Rail transition resistance detecting system and method |
| CN107632521A (en) * | 2017-08-30 | 2018-01-26 | 中国矿业大学 | A kind of potentiostat control strategy based on decision tree and neutral net |
| CN107632521B (en) * | 2017-08-30 | 2020-09-29 | 中国矿业大学 | Constant potential rectifier control method based on decision tree and neural network |
| CN107884636A (en) * | 2017-09-27 | 2018-04-06 | 北京交通大学 | Track resistance dynamic simulator system |
| CN107884636B (en) * | 2017-09-27 | 2019-12-20 | 北京交通大学 | Track resistance dynamic simulation system |
| CN108646079A (en) * | 2018-06-29 | 2018-10-12 | 苏州大学 | Lower stray electrical current non-contact detection method coexists in a kind of different buried depth pipeline |
| CN108646079B (en) * | 2018-06-29 | 2019-06-28 | 苏州大学 | Lower stray electrical current non-contact detection method coexists in a kind of different buried depth pipeline |
| CN108562782B (en) * | 2018-07-17 | 2020-06-16 | 国网湖南省电力有限公司 | Stray current acquisition method and stray current detection system |
| CN108562782A (en) * | 2018-07-17 | 2018-09-21 | 国网湖南省电力有限公司 | A kind of acquisition methods of stray electrical current and the detecting system of stray electrical current |
| AU2019299873B2 (en) * | 2018-11-19 | 2020-10-01 | China University Of Mining And Technology | Method for detecting insulation damage location in reflux rail of subway/coal mine and transition resistance thereof |
| WO2020103394A1 (en) * | 2018-11-19 | 2020-05-28 | 中国矿业大学 | Method for monitoring location of insulation damage of subway/coal-mine return track and transition resistance thereof |
| US10962605B2 (en) * | 2018-11-19 | 2021-03-30 | China University Of Mining And Technology | Method for detecting insulation damage location in reflux rail of subway/coal mine and transition resistance thereof |
| CN110836922B (en) * | 2019-11-18 | 2022-03-15 | 上海地铁维护保障有限公司供电分公司 | Device for detecting working state of reference electrode and working method thereof |
| CN110836922A (en) * | 2019-11-18 | 2020-02-25 | 上海地铁维护保障有限公司供电分公司 | Device for detecting working state of reference electrode and working method thereof |
| CN112379301A (en) * | 2020-09-15 | 2021-02-19 | 中国测试技术研究院机械研究所 | Track stray current and transition resistance online monitoring method and system thereof |
| CN112379301B (en) * | 2020-09-15 | 2023-09-05 | 中国测试技术研究院机械研究所 | Track stray current and transition resistance online monitoring method and system thereof |
| CN112230040A (en) * | 2020-10-13 | 2021-01-15 | 广州市扬新技术研究有限责任公司 | Stray current evaluation method for calculating direct current traction power supply system |
| CN114154414A (en) * | 2021-11-30 | 2022-03-08 | 徐州中矿传动轨道科技有限公司 | Cloud computing-based subway stray current leakage high-risk interval identification method and system and storage medium |
| CN114154414B (en) * | 2021-11-30 | 2024-04-16 | 徐州中矿传动轨道科技有限公司 | Subway stray current leakage high-risk interval identification method, system and storage medium based on cloud computing |
| CN114325472A (en) * | 2021-12-23 | 2022-04-12 | 徐州和纬信电科技有限公司 | Stray current monitoring system based on dynamic and static automatic switching measurement function |
| CN114778984A (en) * | 2022-04-28 | 2022-07-22 | 西南交通大学 | Method for detecting stray current of transformer substation based on earth surface potential change |
| CN114778984B (en) * | 2022-04-28 | 2023-05-30 | 西南交通大学 | Transformer substation stray current detection method based on earth surface potential change |
| CN115096806A (en) * | 2022-06-21 | 2022-09-23 | 徐州中矿传动轨道科技有限公司 | Method and system for identifying stray current corrosion high-risk area of tunnel steel-concrete structure |
| CN115096806B (en) * | 2022-06-21 | 2024-04-12 | 徐州中矿传动轨道科技有限公司 | Method and system for identifying high-risk area of stray current corrosion of tunnel steel-concrete structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102175597A (en) | On-line monitoring method of metro stray current corrosion on-line monitoring system | |
| CN106768736B (en) | A kind of subway tunnel monitoring of leakage and method for early warning | |
| CN106761931B (en) | Coal rock dynamic disaster acoustic-electric gas real-time automatic monitoring system and method | |
| CN106597555B (en) | Grounding grid corrosion degree evaluation method based on transient electromagnetic method | |
| CN203350392U (en) | Fault locating system for high tension transmission line | |
| CN104678229B (en) | A kind of grounding net of transformer substation corrosion monitoring system | |
| CN105258765A (en) | Dam body hydrostatic level in situ automatic monitoring system and method | |
| CN202230595U (en) | Multichannel data acquisition system used for vibrating wire transducers | |
| CN203299983U (en) | Optical fiber sensing technology-based fiber monitoring system in coal mined-out area | |
| CN103332208A (en) | Steel rail longitudinal displacement on-line monitoring device | |
| CN105158643A (en) | Remote control detecting device for corrosion state of grounding grid horizontal voltage-sharing conductor of substation | |
| CN206514881U (en) | Soil and underground water detection device | |
| CN103941071A (en) | High-speed rail traction network power supply system earth induction current monitoring method and device | |
| AU2022301223B2 (en) | Power transmission line fault positioning method, recording medium, and data processing apparatus | |
| CN109001997A (en) | A kind of anti-tampering environment information acquisition system | |
| CN105182183A (en) | Method for remotely detecting corrosion state of horizontal voltage equalizing conductor of transformer substation grounding grid | |
| CN206833669U (en) | A kind of slope geological monitoring and warning system | |
| Dong et al. | A diagnosis of grounding grid corrosion defects based on branch voltage disturbance | |
| CN203024763U (en) | Construction beam posture monitoring system | |
| CN109459467B (en) | Internet of things system for remotely monitoring soil environment and corrosivity in situ | |
| CN211206615U (en) | Monitoring device for stray current | |
| CN202066903U (en) | Intelligent device suitable for static dynamic potential real-time test | |
| CN211147738U (en) | Distributed optical fiber cave depot fracture water monitoring and early warning system | |
| CN110858006A (en) | Underground pipe network geophysical prospecting system and method based on GIS | |
| CN102645616A (en) | Fault addressing method for transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110907 |