CN110108988A - A kind of substation's type insulation monitoring system and method based on EMTC - Google Patents

A kind of substation's type insulation monitoring system and method based on EMTC Download PDF

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Publication number
CN110108988A
CN110108988A CN201910378970.8A CN201910378970A CN110108988A CN 110108988 A CN110108988 A CN 110108988A CN 201910378970 A CN201910378970 A CN 201910378970A CN 110108988 A CN110108988 A CN 110108988A
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CN
China
Prior art keywords
substation
emtc
communication terminal
terminal
cloud server
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
Application number
CN201910378970.8A
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Chinese (zh)
Inventor
罗博文
刘军君
骆健
徐康
吕晓飞
韩忠修
周亚东
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Nari Technology Co Ltd
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Nari Technology Co Ltd
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Publication date
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Priority to CN201910378970.8A priority Critical patent/CN110108988A/en
Publication of CN110108988A publication Critical patent/CN110108988A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1218Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423Input/output
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/21Pc I-O input output
    • G05B2219/21137Analog to digital conversion, ADC, DAC
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/25Pc structure of the system
    • G05B2219/25187Transmission of signals, medium, ultrasonic, radio
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/25Pc structure of the system
    • G05B2219/25257Microcontroller

Abstract

The invention discloses a kind of substation's type insulation monitoring system and method based on EMTC, the information collection connect substation's mainboard with communication terminal device, and acquires the pictorial information of substation's casting insulation part inside and insulating surface and be sent to cloud server management platform;Cloud server manages platform and receives simultaneously collating sort substation real-time running data and fault message;Mobile APP terminal receives to manage the image data that platform is sent from cloud server by carrier network, and judge inside the casting insulation part in picture with the presence or absence of cavity or impurity, insulating surface whether there is tip protrusion, if detected, maintenance staff are reminded to go the equipment in maintenance substation by the end APP.The present invention system can notify maintenance personal, personnel easy to repair to implement timely to overhaul in time, greatly shortening repair process.

Description

A kind of substation's type insulation monitoring system and method based on EMTC
Technical field
The present invention relates to a kind of substation's type insulation monitoring system and method based on EMTC belongs to wireless communication technique neck Domain.
Background technique
Currently, due to the influence of the factors such as electric field force, running environment temperature and humidity, corrosive gas, insulation of electrical installation May can constantly it weaken, while in actual production operational process, certain unfavorable factors may be influenced to some extent The insulation performance of equipment shortens the nominal operation service life of electrical equipment, so the insulation of electrical installation for substation is supervised online Examining system comes into being.
An emerging technology of the EMTC as all things on earth interconnection field, low-power consumption, wide covering, large capacity, low cost etc. are excellent Gesture allows to be widely used in a variety of vertical technologies.The in-door covering of EMTC is very capable, has higher gain compared with GSM, especially It is suitble to the communication scenes of transformer substation remote monitoring.
Based on this, a kind of substation's type insulation monitoring system and method based on EMTC is devised herein, has while monitoring 100,000 The ability of the substation of the above quantity of platform.It uses EMTC technology to realize low-power consumption, extensively cover, the remote monitoring data of low rate Substation operation status information is sent to cloud server by transmission, is recorded and more tracking substation operation situation, based on being remembered The data of record realize effectively fault location and analysis, which can notify maintenance personal in time, personnel easy to repair implement and When maintenance, greatly shortening repair process.Therefore had a power failure for the prior art by scene and check equipment running status, lack effective Trouble measure produced not in full conformity with operation, it is really necessary to propose a kind of technical solution to solve prior art presence The technical issues of.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the present invention provides a kind of substation's insulation based on EMTC System and method is monitored, by working as detection inside the casting insulation part to substation and insulating surface carries out realtime graphic monitoring To Substation Electric Equipment insulation status exception when, can notify maintenance personal in time, personnel easy to repair implement timely to examine It repairs, greatly shortening repair process.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of substation's type insulation monitoring system based on EMTC, comprising: information collection and communication terminal device, cloud server pipe Platform, mobile APP terminal, the information collection connect substation's mainboard with communication terminal device, and acquire substation's casting The pictorial information of insulating part inside and insulating surface is simultaneously sent to cloud server management platform;Cloud server management platform connects Receive simultaneously collating sort substation real-time running data and fault message;Mobile APP terminal is received by carrier network from cloud The image data that server admin platform is sent, and judge to whether there is cavity or impurity inside the casting insulation part in picture, Insulating surface whether there is tip protrusion, if detected, remind maintenance staff to go setting in maintenance substation by the end APP It is standby.
As a preferred solution: the main control chip of the information collection and communication terminal device uses STM32F103C8T6 core Piece.
As a preferred solution: the cmos image sensor of the information collection and communication terminal device uses HV7141D.
As a preferred solution: the EMTC wireless communication module of the information collection and communication terminal device uses BC36MA- 128-SGN。
As a preferred solution: the power module of the information collection and communication terminal device uses MIC29302WU.
As a preferred solution: the crystal oscillator of the information collection and communication terminal device uses the crystal oscillating circuit of 12M.
A kind of substation's insulated monitoring method based on EMTC, includes the following steps:
Step 1: the imaging sensor of information collection and communication terminal device is adopted by carrying out picture signal to Substation Insulator Collect and be sent into STM32 processor module after carrying out A/D conversion, then is transmitted through EMTC wireless communication module;
Step 2: information collection and communication terminal device and cloud server management platform being communicatively coupled, imaging sensor Start starting to take pictures, then line synchronising signal is judged, carries out reading a byte in next step if effectively, if nothing Effect then continues waiting for, until line synchronising signal is effectively operated again;Need to judge whether after having read a byte by A line is run through, and is finished if do not read, and continues to read, and until finishing until reading a line, judges whether to run through a frame, Continue to read if not reading and finishing, otherwise waits for the weight that is effective and carrying out next step of line synchronising signal next time Multiple operation, constantly transfers data to cloud;Mobile APP terminal and cloud are attached by carrier network, cloud Data can be transferred to mobile APP terminal by base station;
Step 3: IP and terminal device position are set to the electronic tag of each information collection and communication terminal device Corresponding relationship;
Step 4: the datagram of safety being deposited into mobile APP terminal, sets certain alarm threshold value, when user's handheld terminal is received When to image data, image data is compared with threshold value, when the characteristic value of insulator is higher than threshold value, the interface APP can go out The page is now reminded, and shows substation position.
The utility model has the advantages that a kind of substation's type insulation monitoring system and method based on EMTC provided by the invention, the system energy Maintenance personal, personnel easy to repair is notified to implement timely to overhaul in time, greatly shortening repair process.
Detailed description of the invention
Fig. 1 is system structure of the invention figure;
Fig. 2 is the structural schematic diagram of device end;
Fig. 3 is the work flow diagram of this method;
Fig. 4 is the flow chart of insulated monitoring method.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, a kind of substation's type insulation monitoring system based on EMTC, comprising: information collection is set with communication terminal Standby, cloud server management platform, mobile APP terminal.Information collection connect substation's mainboard with communication terminal device, and acquires The pictorial information of substation's casting insulation part inside and insulating surface is simultaneously sent to cloud server management platform;Cloud server It manages platform and receives simultaneously collating sort substation real-time running data and fault message;Mobile APP terminal passes through carrier network Receive the image data sent from cloud server management platform, if there is cavity or miscellaneous inside the casting insulation part in picture There are tip protrusions will be automatically recognized detected by algorithm for matter or insulating surface, then reminds maintenance staff by the end APP Go the equipment in maintenance substation.
As shown in Fig. 2, the information collection and communication terminal device hardware structure: main control chip using STM32F103C8T6 chip, it is a 32 microcontrollers based on ARM Cortex-M kernel STM32 series.Image Sensor is the critical component of frequency image monitoring system.Cmos image sensor of this system using Hynix company, model HV7141D, the imaging sensor have 8 ADC.The EMTC wireless communication module of this system mainly moves using Shanghai remote public The BC36MA-128-SGN product of department, the module support 3.3V-4.3V power supply, and super with 22.5mm*26.5mm*2.3mm Small size is able to satisfy Internet of Things application demand convenient for being embedded into consumer product application.Power module uses MIC29302WU pairs Module carries out the supply voltage of output 3.8V, and main control chip is desirable for the crystal oscillating circuit that crystal oscillator is 12M.Information acquisition module: Picture signal acquisition is carried out to substation by imaging sensor, sensor enabled first is taken pictures to start, and is then synchronized to row Signal is judged, is carried out reading a byte in next step if effectively, be continued waiting for if invalid, until the synchronous letter of row It number is effectively operated again.Wireless communication module: EMTC equipment can be in consumption compared with the normal fortune for maintaining monitoring device under low battery Make, transformer substation remote monitoring system long-term communication can be perfectly suitable for;Meanwhile EMTC technology signal cover is high, penetrates Power is strong, can cover the unapproachable place of the common radio networks signal such as underground garage, basement, underground corridor.In addition, because EMTC technology is insensitive to service delay, can connect more users, great amount of terminals in a dormant state, once have data hair It send, connection status can be quickly entered, large-scale Internet of Things can be suitable for well and communicated.
Embodiment:
As shown in Figure 3: substation's type insulation monitoring system is in use, be initially mounted on the information collection of substation and communication terminal is set It is standby, picture signal acquisition is carried out to substation by imaging sensor, sensor enabled first is taken pictures to start, then same to row Step signal is judged, is carried out reading a byte in next step if effectively, be continued waiting for if invalid, until row synchronizes Signal is effectively operated again.It needs to judge whether to run through a line after having read a byte, if do not read Finish, then continues to read, until being finished until reading a line, judge whether to run through a frame, continue if not reading and finishing It reads, otherwise waits for the repetitive operation that is effective and carrying out next step of line synchronising signal next time.Information collection with communicate Terminal equipment units transmit the data that substation acquires to cloud, and then the image data in cloud can pass through operator Network transmission is compared the value of information passed back with threshold value to the mobile APP terminal of user, when the impurity height of insulating surface When size is higher than threshold value, the interface APP will appear the prompting page, and user is notified maintenance personal should to be notified in time to go to scene, right Substation carries out searching place of problems, and then rapid-maintenance guarantees that power supply is not a greater impact.
As shown in Figure 4: a kind of substation's insulated monitoring method based on EMTC includes the following steps:
Step 1: multiple information collections and communication terminal device being installed near the insulator of substation, the image of terminal device passes Sensor is by carrying out picture signal acquisition to Substation Insulator and carry out being sent into STM32 processor module after A/D conversion, then passes through EMTC wireless communication module is transmitted;Power module mainly carries out electric energy supply, EMTC wireless communication module to other modules Technology signal cover is high, and penetration power is strong, can be perfectly suitable for transformer substation remote monitoring system long-term communication;
Step 2: information collection and communication terminal device and cloud server management platform being communicatively coupled, imaging sensor Start starting to take pictures, then line synchronising signal is judged, carries out reading a byte in next step if effectively, if nothing Effect then continues waiting for, until line synchronising signal is effectively operated again;Need to judge whether after having read a byte by A line is run through, and is finished if do not read, and continues to read, and until finishing until reading a line, judges whether to run through a frame, Continue to read if not reading and finishing, otherwise waits for the weight that is effective and carrying out next step of line synchronising signal next time Multiple operation, constantly transfers data to cloud;Mobile APP terminal and cloud are attached by carrier network, cloud Data can be transferred to mobile APP terminal by base station;
Step 3: IP and terminal device position are set to the electronic tag of each information collection and communication terminal device Corresponding relationship;
Step 4: the datagram of safety being deposited into mobile APP terminal, sets certain alarm threshold value, when user's handheld terminal is received When to image data, image data is compared with threshold value, when the characteristic value of insulator is higher than threshold value, the interface APP can go out The page is now reminded, and shows substation position;
Step 5: operator on duty notifies maintenance personal to go to scene after receiving warning message, search existing to substation and ask The place of topic, then rapid-maintenance guarantees that power supply is not a greater impact.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (7)

1. a kind of substation's type insulation monitoring system based on EMTC, comprising: information collection and communication terminal device, cloud server Manage platform, mobile APP terminal, it is characterised in that: the information collection connect substation's mainboard with communication terminal device, and adopts The pictorial information of collection substation's casting insulation part inside and insulating surface is simultaneously sent to cloud server management platform;Cloud service Device manages platform and receives simultaneously collating sort substation real-time running data and fault message;Mobile APP terminal passes through operator's net Network receives the image data sent from cloud server management platform, and judges to whether there is inside the casting insulation part in picture Cavity or impurity, insulating surface whether there is tip protrusion, if detected, remind maintenance staff that maintenance is gone to become by the end APP Equipment in power station.
2. a kind of substation's type insulation monitoring system based on EMTC according to claim 1, it is characterised in that: the information Acquisition and the main control chip of communication terminal device use STM32F103C8T6 chip.
3. a kind of substation's type insulation monitoring system based on EMTC according to claim 1, it is characterised in that: the information Acquisition and the cmos image sensor of communication terminal device use HV7141D.
4. a kind of substation's type insulation monitoring system based on EMTC according to claim 1, it is characterised in that: the information Acquisition and the EMTC wireless communication module of communication terminal device use BC36MA-128-SGN.
5. a kind of substation's type insulation monitoring system based on EMTC according to claim 1, it is characterised in that: the information Acquisition and the power module of communication terminal device use MIC29302WU.
6. a kind of substation's type insulation monitoring system based on EMTC according to claim 1, it is characterised in that: the information Acquisition uses the crystal oscillating circuit of 12M with the crystal oscillator of communication terminal device.
7. a kind of substation's insulated monitoring method based on EMTC, characterized by the following steps:
Step 1: the imaging sensor of information collection and communication terminal device is adopted by carrying out picture signal to Substation Insulator Collect and be sent into STM32 processor module after carrying out A/D conversion, then is transmitted through EMTC wireless communication module;
Step 2: information collection and communication terminal device and cloud server management platform being communicatively coupled, imaging sensor Start starting to take pictures, then line synchronising signal is judged, carries out reading a byte in next step if effectively, if nothing Effect then continues waiting for, until line synchronising signal is effectively operated again;Need to judge whether after having read a byte by A line is run through, and is finished if do not read, and continues to read, and until finishing until reading a line, judges whether to run through a frame, Continue to read if not reading and finishing, otherwise waits for the weight that is effective and carrying out next step of line synchronising signal next time Multiple operation, constantly transfers data to cloud;Mobile APP terminal and cloud are attached by carrier network, cloud Data can be transferred to mobile APP terminal by base station;
Step 3: IP and terminal device position are set to the electronic tag of each information collection and communication terminal device Corresponding relationship;
Step 4: the datagram of safety being deposited into mobile APP terminal, sets certain alarm threshold value, when user's handheld terminal is received When to image data, image data is compared with threshold value, when the characteristic value of insulator is higher than threshold value, the interface APP can go out The page is now reminded, and shows substation position.
CN201910378970.8A 2019-05-08 2019-05-08 A kind of substation's type insulation monitoring system and method based on EMTC Pending CN110108988A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201167215Y (en) * 2008-03-03 2008-12-17 河南省电力公司洛阳供电公司 Visualizer for appearance of transformer substation power equipment
CN101609053A (en) * 2009-07-24 2009-12-23 国网电力科学研究院武汉南瑞有限责任公司 A kind of intelligent insulator on-line monitoring device and method thereof
CN101644736A (en) * 2009-09-08 2010-02-10 河南省电力公司平顶山供电公司 Internal operation image real-time monitoring system for high-voltage electric apparatus
CN102158691A (en) * 2011-05-31 2011-08-17 中国电子科技集团公司第三十研究所 System and method for monitoring by combining radio frequency identification with video shooting
CN102932628A (en) * 2012-09-29 2013-02-13 上海市电力公司 Remote digital video monitoring system of transformer substation
CN102938540A (en) * 2012-11-27 2013-02-20 宁波市鄞州供电局 Substation equipment detection system
CN103472374A (en) * 2013-08-28 2013-12-25 国网浙江省电力公司嘉兴供电公司 Online GIS (gas insulated switchgear) partial discharge monitoring device
CN204203734U (en) * 2014-09-11 2015-03-11 广西电网公司电力科学研究院 Based on the information acquisition of power transformation main equipment and the management system of electric power Internet of Things
CN107063379A (en) * 2017-04-18 2017-08-18 福建强闽信息科技有限公司 A kind of intelligent telemetering water meter device and monitoring system based on eMTC

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201167215Y (en) * 2008-03-03 2008-12-17 河南省电力公司洛阳供电公司 Visualizer for appearance of transformer substation power equipment
CN101609053A (en) * 2009-07-24 2009-12-23 国网电力科学研究院武汉南瑞有限责任公司 A kind of intelligent insulator on-line monitoring device and method thereof
CN101644736A (en) * 2009-09-08 2010-02-10 河南省电力公司平顶山供电公司 Internal operation image real-time monitoring system for high-voltage electric apparatus
CN102158691A (en) * 2011-05-31 2011-08-17 中国电子科技集团公司第三十研究所 System and method for monitoring by combining radio frequency identification with video shooting
CN102932628A (en) * 2012-09-29 2013-02-13 上海市电力公司 Remote digital video monitoring system of transformer substation
CN102938540A (en) * 2012-11-27 2013-02-20 宁波市鄞州供电局 Substation equipment detection system
CN103472374A (en) * 2013-08-28 2013-12-25 国网浙江省电力公司嘉兴供电公司 Online GIS (gas insulated switchgear) partial discharge monitoring device
CN204203734U (en) * 2014-09-11 2015-03-11 广西电网公司电力科学研究院 Based on the information acquisition of power transformation main equipment and the management system of electric power Internet of Things
CN107063379A (en) * 2017-04-18 2017-08-18 福建强闽信息科技有限公司 A kind of intelligent telemetering water meter device and monitoring system based on eMTC

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘伟 等: "5G时代物联网技术在电力系统中的采用", 《数字通信世界》 *

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