CN111579935A - Power distribution network line breakdown information acquisition and mobile network intercommunication method - Google Patents
Power distribution network line breakdown information acquisition and mobile network intercommunication method Download PDFInfo
- Publication number
- CN111579935A CN111579935A CN202010527801.9A CN202010527801A CN111579935A CN 111579935 A CN111579935 A CN 111579935A CN 202010527801 A CN202010527801 A CN 202010527801A CN 111579935 A CN111579935 A CN 111579935A
- Authority
- CN
- China
- Prior art keywords
- data
- monitoring
- internet
- mobile network
- power distribution
- 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
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009826 distribution Methods 0.000 title claims abstract description 20
- 230000015556 catabolic process Effects 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims description 12
- 208000025274 Lightning injury Diseases 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000013024 troubleshooting Methods 0.000 abstract description 5
- 238000004904 shortening Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a method for collecting breakdown information of a power distribution network line and communicating with a mobile network, which comprises the following specific steps: s1: the current signals of all monitoring points are collected through the Internet of things module arranged at each monitoring point, and the current signals are sent to the data processing unit; s2: and the data processing unit receives the corresponding current signal for processing and analysis, and sends the analyzed result to the server monitoring terminal. The invention has the advantages of realizing rapid automatic fault point positioning, realizing real-time alarm through the mobile network and the monitoring server, further greatly improving the troubleshooting efficiency, shortening the power failure time and avoiding influencing the life of people.
Description
Technical Field
The invention relates to the technical field of power distribution network line fault monitoring, in particular to a method for collecting breakdown information of a power distribution network line and communicating the breakdown information with a mobile network.
Background
220KV, 35KV, 10KV and below power distribution networks are important components in power supply networks, and the operation reliability of the power distribution networks is directly related to the power consumption of thousands of households. However, as the power distribution network has the characteristics of wide area, long line length, multiple points and the like, when the power distribution network runs outdoors for a long time, tripping faults and power failure book valleys often occur under the influence of natural factors or human factors, so that the normal life and production power consumption of a large number of users are influenced, and certain economic loss is caused to power supply enterprises. Taking 7 10kV distribution lines governed by a certain power supply station in Hubei province of the national grid as an example, 17 trips of the lines occur in 1 month of 2018, the reclosing is successful only 3 times, the rest lines are powered off for 2 h-18 h/time, the power loss is 47156 kWh/time, and the power loss is 25848 yuan/time. In order to eliminate the fault and recover the power supply, the power supply station dispatches the first-aid repair personnel 59 times and moves the vehicle 33 times, and the accumulated cost is about 12000 yuan/time. The accumulated lost electric charge and the rush-repair charge reach 43848 yuan/time, which causes great economic loss and social influence. If it is considered that there are 41636 township power stations nationwide, the lost electricity charge and the rush repair charge for troubleshooting and recovering the power supply each year will be an astronomical number.
In order to quickly remove the fault and recover the power supply, firstly, a fault point needs to be quickly and accurately positioned. At present, fault positioning and fault removal mainly depend on manual inspection, the workload is large, time and labor are wasted, most faults occur at night, and the difficulty of inspection is further increased. Other fault positioning methods include an impedance method, a traveling wave method, a section method, a fault indicator detection method, unmanned aerial vehicle line patrol and other means, but the methods have various defects, and not only are the positioning accuracy low, the line patrol time long, the cost high, the labor intensity only reduced, and the method cannot be used for quick positioning and cannot be popularized and applied.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for acquiring the breakdown information of a power distribution network line and communicating the breakdown information with a mobile network, and aims to solve the technical problem.
The technical scheme for solving the technical problems is as follows:
a method for collecting breakdown information of a power distribution network line and communicating with a mobile network comprises the following specific steps:
s1: the lightning stroke current signals of each monitoring point are collected through an internet of things module arranged at each monitoring point, and the current signals are sent to a data processing unit;
s2: the data processing unit receives the corresponding current signals for processing and analysis, and sends the analyzed results to the server monitoring terminal to realize data intercommunication;
s3: the server monitoring terminal receives the result and sends the result to a data monitoring information center;
on the basis of the technical scheme, the invention can be further improved as follows.
Further, the step S1 includes the following specific steps:
s11: collecting lightning current signals of each monitoring point;
s12: sorting the current information and converting the AC signal into DC signal
S13: the moment the direct current signal passes through the electromagnetic coil, the electromagnetic coil generates magnetism,
s14, the magnetic sensor works to detect the magnetic change and transmits the detection signal to the data processing unit.
Further, the step S2 includes the following specific steps:
s21: the control unit of the data processing unit receives the detection signal by the low-power consumption control unit
S22: the control unit starts the power supply of the Internet of things module and exchanges data with the Internet of things module
S23: the module of the Internet of things starts to work and exchanges data with the control unit
S24: the Internet of things module starts and registers a mobile network, and sends lightning stroke information to the server monitoring terminal.
Further, the step S3 includes the following specific steps:
s31: receiving and storing a judgment result sent by the server monitoring terminal;
s32: sending to a data monitoring information center
Further, in step S3, the data monitoring information center processes (sends the analysis result to the user side or gives an alarm) the received analysis result.
The invention has the beneficial effects that: in the fault monitoring process, firstly, data of each monitoring point are respectively collected through a plurality of internet of things modules, and corresponding data are respectively sent to a monitoring terminal; the monitoring terminal receives corresponding data and sends the data to the data monitoring information center; and finally, the data monitoring information center receives and analyzes the data sent by the monitoring terminal, and when the internet of things module is analyzed to be out of order, the data monitoring information center reminds corresponding responsible electricians and background management personnel. The invention realizes quick and automatic fault point positioning, thereby greatly improving the troubleshooting efficiency, shortening the power failure time and avoiding influencing the life of people.
Drawings
FIG. 1 is a flow chart of a power distribution network line lightning stroke signal acquisition and monitoring method of the invention.
Detailed Description
The principles and features of this invention are described in connection with the drawings and the detailed description of the invention, which are set forth below as examples to illustrate the invention and not to limit the scope of the invention.
As shown in fig. 1, the present invention provides a method for collecting breakdown information of a power distribution network line and communicating with a mobile network, which comprises the following steps:
s1: the lightning stroke current signals of each monitoring point are collected through an internet of things module arranged at each monitoring point, and the current signals are sent to a data processing unit;
s2: the data processing unit receives the corresponding current signals for processing and analysis, and sends the analyzed results to the server monitoring terminal to realize data intercommunication;
s3: the server monitoring terminal receives the result and sends the result to a data monitoring information center;
further, the step S1 includes the following specific steps:
s11: collecting lightning current signals of each monitoring point;
s12: sorting the current information and converting the AC signal into DC signal
S13: the moment the direct current signal passes through the electromagnetic coil, the electromagnetic coil generates magnetism,
s14, the magnetic sensor works to detect the magnetic change and transmits the detection signal to the data processing unit.
Further, the step S2 includes the following specific steps:
s21: the control unit of the data processing unit receives the detection signal by the low-power consumption control unit
S22: the control unit starts the power supply of the Internet of things module and exchanges data with the Internet of things module
S23: the module of the Internet of things starts to work and exchanges data with the control unit
S24: the Internet of things module starts and registers a mobile network, and sends lightning stroke information to the server monitoring terminal.
Further, the step S3 includes the following specific steps:
s31: receiving and storing a judgment result sent by the server monitoring terminal;
s32: sending to a data monitoring information center
Further, in step S3, the data monitoring information center sends the received analysis result to the user side, so that the responsible electrician and the background manager can know the specific situation of the fault in time. The reminding information sent by the data monitoring information center is received in real time through the user terminal, so that responsibility electricians and background management personnel can know the specific condition of the fault in time, the fault can be handled in time, the power failure time is effectively shortened, and the life of people is prevented from being influenced.
Preferably, in the invention, the user terminal is a mobile phone or a tablet personal computer, which is convenient to carry, so that electricians and background management personnel can receive information at any time and know the situation in time, delay of rush repair work is avoided, and the use is convenient.
Further, in step S3, the data monitoring information center warns whether a lightning strike condition occurs through an indicator lamp, and when the lightning strike condition occurs, the indicator lamp warns.
Further, the indicator light is an acousto-optic indicator light.
The working principle of the invention is as follows:
statistics shows that the insulator flashover and the lightning arrester overcurrent are caused by severe weather conditions such as lightning weather, strong wind, rain, snow and the like. The breakdown conductor breaks and causes a single-phase earth fault of the distribution network to account for about 80% of the total number of faults. Therefore, the project adopts the lightning current acquisition unit to acquire lightning current signals and implements accurate fault positioning through the wireless Internet of things card and the data monitoring information center. Upon a lightning strike or other over-current fault, the data processing unit sends information to the data center. Under normal conditions, when no current flows through the collector, the collector is in a dormant state.
1. The method is characterized in that: and transmitting signals by adopting an internet of things network platform.
2. Composition of
Monitoring a terminal: simulation arrester counter appearance, mounting means have the thing networking to wash module circuit board, thunderbolt current detection circuitry, lithium cell, antenna, solar panel inside.
Data monitoring information center: the system comprises a machine room, a large screen display and information software. And the later stage is planned to be incorporated into a national network, a headquarter of a south network company and a provincial company monitoring platform.
3. Principle of
The front end is hardware of a lightning arrester counter (leakage current is monitored, when lightning strike occurs, impact current can act when the impact current exceeds a 400A threshold value), the rear end is additionally provided with an internet of things module, a counter action signal is sent to a monitoring center through a wireless network, and then the mobile phone is sent. Lightning current signal detection result signal
3.1 the counter kinetic energy starts the switch, adopts the moving contact, the output testing result signal.
3.2 collecting electromagnetic change of counter and outputting detection result signal
Charging and discharging lithium batteries and solar energy supplement power supply, theoretically, the standby time is 4-5 years, and the lithium batteries do not need to be replaced in the middle.
4. Mounting means
4.1 the grounding circuit is arranged on a pole with a lightning arrester and an insulator, is 4-6m in height (the 10kV pole tower is generally 4-6m in height), is connected in series, and can operate without power failure (equivalent to live working). The grounding flat iron is firstly cut to 200mm and then connected by a flexible wire or flat iron. (Can be improved to parallel mode)
4.2 is mounted on the arrester with distribution transformer.
5. System components
(1) The Internet of things module: lightning current acquisition unit, data processing unit, charging/power supply unit (lithium cell, solar panel).
(2) Monitoring a terminal: data server (lease China Mobile company server port, develop database software).
(3) Data monitoring information center: the system comprises a machine room, a large screen display and information software.
Under normal conditions, each wireless internet of things module sends a signal to the monitoring terminal every 24 hours or 48 hours, and the data monitoring information center displays that the monitoring point is a green normal bright point, which indicates that the line runs normally without faults.
Under the condition of a fault, the wireless Internet of things module captures a current signal and triggers the data processing unit, the Internet of things module sends lightning stroke detection information to the data server, and after the data server receives the lightning stroke detection information, the data monitoring information center displays a red flashing bright spot which indicates that the lightning stroke current is detected at the position and sends an alarm signal.
Under normal conditions, the time limit is generally within 3min from the occurrence of the fault to the notification of the mobile phone end of the user, the time is short, and the troubleshooting time is greatly shortened, so that an electrician can timely process the fault, normal power supply for the life of people is ensured, and the life of people is prevented from being influenced. According to the invention, through the Internet of things technology, cloud computing and big data technology, the power grids of 220KV, 35KV, 10KV and below are intelligently monitored in real time, once the power grids are abnormal due to lightning stroke, fault points can be automatically positioned within 3min of the system, and corresponding responsible electricians and power grid backstage can be reminded in real time through short messages, so that the fault troubleshooting efficiency is greatly improved, and the power failure time is shortened.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, and implementation of the network breakdown information collection and intercommunication by the internet of things technology on each telecommunication operator platform, which are within the spirit and principle of the present invention, should be included in the protection scope of the present invention.
Claims (5)
1. A method for collecting breakdown information of a power distribution network line and communicating with a mobile network is characterized by comprising the following specific steps:
s1: the lightning stroke current signals of each monitoring point are collected through an internet of things module arranged at each monitoring point, and the current signals are sent to a data processing unit;
s2: the data processing unit receives the corresponding current signals for processing and analysis, and sends the analyzed results to the server monitoring terminal to realize data intercommunication;
s3: and the server monitoring terminal receives the result and sends the result to a data monitoring information center.
2. The method for collecting breakdown information of power distribution network lines and communicating with mobile network as claimed in claim 1, wherein said step S1 includes the following steps:
s11: collecting lightning current signals of each monitoring point;
s12: sorting the current information and converting the AC signal into DC signal
S13: the moment the direct current signal passes through the electromagnetic coil, the electromagnetic coil generates magnetism,
s14, the magnetic sensor works to detect the magnetic change and transmits the detection signal to the data processing unit.
3. The method for collecting breakdown information of power distribution network lines and communicating with mobile network as claimed in claim 1, wherein said step S2 includes the following steps:
s21: the control unit of the data processing unit receives the detection signal by the low-power consumption control unit
S22: the control unit starts the power supply of the Internet of things module and exchanges data with the Internet of things module
S23: the module of the Internet of things starts to work and exchanges data with the control unit
S24: the Internet of things module starts and registers a mobile network, and sends lightning stroke information to the server monitoring terminal.
4. The method for collecting breakdown information of power distribution network lines and communicating with mobile network as claimed in claim 1, wherein said step S3 includes the following steps:
s31: receiving and storing a judgment result sent by the server monitoring terminal;
s32: and sending the data to a data monitoring information center.
5. The method for network line breakdown information collection and interworking with mobile networks according to any one of claims 1-4, wherein: in step S3, the data monitoring information center processes the received analysis result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010527801.9A CN111579935A (en) | 2020-06-11 | 2020-06-11 | Power distribution network line breakdown information acquisition and mobile network intercommunication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010527801.9A CN111579935A (en) | 2020-06-11 | 2020-06-11 | Power distribution network line breakdown information acquisition and mobile network intercommunication method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111579935A true CN111579935A (en) | 2020-08-25 |
Family
ID=72112294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010527801.9A Pending CN111579935A (en) | 2020-06-11 | 2020-06-11 | Power distribution network line breakdown information acquisition and mobile network intercommunication method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111579935A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114518550A (en) * | 2022-01-30 | 2022-05-20 | 天津市中力神盾电子科技有限公司 | Electrical appliance registration method and electrical appliance monitoring device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202014112U (en) * | 2011-03-21 | 2011-10-19 | 吕志清 | Portable digital mobile power supply |
| CN105933355A (en) * | 2016-07-07 | 2016-09-07 | 中国联合网络通信集团有限公司 | Internet of things terminal management method, internet of things server and network server |
| CN107482780A (en) * | 2017-09-22 | 2017-12-15 | 武汉微智创大科技有限公司 | A kind of wireless distributed monitoring method, equipment and system |
| CN206863161U (en) * | 2017-06-28 | 2018-01-09 | 李陶 | A kind of fault positioning system of power line based on Internet of Things and DSP |
| CN207067259U (en) * | 2017-03-30 | 2018-03-02 | 南京邮电大学 | A kind of power failure monitoring system based on cloud computing and Internet of Things |
| CN107991548A (en) * | 2017-11-09 | 2018-05-04 | 上海格蒂电力科技有限公司 | A kind of arrester on-line monitoring system and control method |
| CN108226715A (en) * | 2018-02-09 | 2018-06-29 | 北方节能股份有限公司 | A kind of indicator for monitoring power transmission distribution network failure |
| CN208046227U (en) * | 2018-05-04 | 2018-11-02 | 广东电网有限责任公司 | Trip notification device and trip notification equipment |
| CN108877176A (en) * | 2018-06-28 | 2018-11-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Internet of Things gas is wireless automatic remote transmission kilowatt meter reading-out system |
| CN109638966A (en) * | 2018-12-28 | 2019-04-16 | 广州中光电气科技有限公司 | A kind of monitoring of arrester intelligent online, data remote visualization cloud platform system |
| CN109889395A (en) * | 2019-03-19 | 2019-06-14 | 中邮科通信技术股份有限公司 | A kind of intelligent distribution system and its working method based on honeycomb Internet of Things |
| CN209913579U (en) * | 2019-07-09 | 2020-01-07 | 国网湖北省电力有限公司检修公司 | A lightning arrester action information transmission device based on the Internet of things connection of transmission lines |
| CN110794188A (en) * | 2019-11-14 | 2020-02-14 | 浙江晨泰科技股份有限公司 | Anti-theft ammeter |
| CN110809061A (en) * | 2019-11-19 | 2020-02-18 | 辽宁金华泽信息技术服务有限公司 | Internet of things health information monitoring device and method |
-
2020
- 2020-06-11 CN CN202010527801.9A patent/CN111579935A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202014112U (en) * | 2011-03-21 | 2011-10-19 | 吕志清 | Portable digital mobile power supply |
| CN105933355A (en) * | 2016-07-07 | 2016-09-07 | 中国联合网络通信集团有限公司 | Internet of things terminal management method, internet of things server and network server |
| CN207067259U (en) * | 2017-03-30 | 2018-03-02 | 南京邮电大学 | A kind of power failure monitoring system based on cloud computing and Internet of Things |
| CN206863161U (en) * | 2017-06-28 | 2018-01-09 | 李陶 | A kind of fault positioning system of power line based on Internet of Things and DSP |
| CN107482780A (en) * | 2017-09-22 | 2017-12-15 | 武汉微智创大科技有限公司 | A kind of wireless distributed monitoring method, equipment and system |
| CN107991548A (en) * | 2017-11-09 | 2018-05-04 | 上海格蒂电力科技有限公司 | A kind of arrester on-line monitoring system and control method |
| CN108226715A (en) * | 2018-02-09 | 2018-06-29 | 北方节能股份有限公司 | A kind of indicator for monitoring power transmission distribution network failure |
| CN208046227U (en) * | 2018-05-04 | 2018-11-02 | 广东电网有限责任公司 | Trip notification device and trip notification equipment |
| CN108877176A (en) * | 2018-06-28 | 2018-11-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Internet of Things gas is wireless automatic remote transmission kilowatt meter reading-out system |
| CN109638966A (en) * | 2018-12-28 | 2019-04-16 | 广州中光电气科技有限公司 | A kind of monitoring of arrester intelligent online, data remote visualization cloud platform system |
| CN109889395A (en) * | 2019-03-19 | 2019-06-14 | 中邮科通信技术股份有限公司 | A kind of intelligent distribution system and its working method based on honeycomb Internet of Things |
| CN209913579U (en) * | 2019-07-09 | 2020-01-07 | 国网湖北省电力有限公司检修公司 | A lightning arrester action information transmission device based on the Internet of things connection of transmission lines |
| CN110794188A (en) * | 2019-11-14 | 2020-02-14 | 浙江晨泰科技股份有限公司 | Anti-theft ammeter |
| CN110809061A (en) * | 2019-11-19 | 2020-02-18 | 辽宁金华泽信息技术服务有限公司 | Internet of things health information monitoring device and method |
Non-Patent Citations (1)
| Title |
|---|
| 邹安全: "《现代物流信息技术与应用》", 31 March 2017 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114518550A (en) * | 2022-01-30 | 2022-05-20 | 天津市中力神盾电子科技有限公司 | Electrical appliance registration method and electrical appliance monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110441655B (en) | Lightning grounding fault monitoring system for wind power plant current collecting line | |
| CN101738565B (en) | Adaptive fault indicator | |
| CN105527540B (en) | A kind of fault detector and the matched overhead distribution network fault positioning method of distributed intelligent terminal | |
| CN102435871A (en) | On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization | |
| CN203422438U (en) | Real-time monitoring and fault location system for overhead lines of power distribution network | |
| CN106501671A (en) | A kind of monitoring method of electric distribution network overhead wire failure | |
| CN106291260A (en) | Power distribution network outage analysis, early warning system | |
| CN205792453U (en) | A kind of distributed photovoltaic system online insulation against ground safety monitoring assembly | |
| CN207559689U (en) | A kind of low-voltage platform area intelligent monitor system | |
| CN202275131U (en) | Temperature and outlet cable fault monitoring device for switch cabinet | |
| CN204925314U (en) | Distribution network checkout system that fault locating used | |
| CN102169135A (en) | Resistive current remote online monitoring system for power transmission line arrester | |
| CN103066693A (en) | Intelligent terminal for power distribution network | |
| CN106357004A (en) | Distributed feeder line automatic monitoring device for rural power distribution network | |
| CN203414561U (en) | Lightning stroke fault point positioning device based on lead energy extraction | |
| CN202903947U (en) | Line fault indicator | |
| CN106018967B (en) | The online insulation against ground safety monitoring assembly of distributed photovoltaic system | |
| CN202676855U (en) | Long-distance positioning device for lightning stroke fault point of power transmission line | |
| CN108922134B (en) | Lightning protection insulator monitoring alarm device | |
| CN201673232U (en) | An intelligent monitoring terminal for high-voltage transmission lines | |
| CN214506661U (en) | System based on low-voltage transformer area line loss rapid positioning | |
| CN111579935A (en) | Power distribution network line breakdown information acquisition and mobile network intercommunication method | |
| CN103795052A (en) | Data signal line RS-485 intelligent anti-lighting device and method | |
| CN203760864U (en) | Automatic distribution-network pole-mounted switch cabinet capable of remote monitoring | |
| CN201993434U (en) | System for quickly positioning distribution network faults based on wireless sensor network |
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: 20200825 |