CN108775929A - A kind of vacuum circuit breaker on-line monitoring system - Google Patents
A kind of vacuum circuit breaker on-line monitoring system Download PDFInfo
- Publication number
- CN108775929A CN108775929A CN201810903764.XA CN201810903764A CN108775929A CN 108775929 A CN108775929 A CN 108775929A CN 201810903764 A CN201810903764 A CN 201810903764A CN 108775929 A CN108775929 A CN 108775929A
- Authority
- CN
- China
- Prior art keywords
- breaker
- pressure
- unit
- temperature
- humidity
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention discloses a kind of vacuum circuit breaker on-line monitoring system, including data acquisition module, processor and display module, processor is connect with data acquisition module and display module respectively, data acquisition module includes temperature and humidity collection unit, pressure sensing cell, angle detection unit, pull force calculation unit, counting unit, control unit, wireless communication unit, and control unit is connect with temperature and humidity collection unit, pressure sensing cell, angle detection unit, pull force calculation unit, counting unit and wireless communication unit respectively.The present invention is acquired and is analyzed to humiture, pressure, pulling force and the stroke etc. in breaker by each unit in data acquisition module, convenient for counting the security evaluation coefficient of breaker, and realize multi-faceted detection to breaker, it realizes on-line monitoring, substantially increases real-time, accuracy and reliability during breaker is monitored on-line.
Description
Technical field
The invention belongs to breaker technical fields, are related to a kind of vacuum circuit breaker on-line monitoring system.
Background technology
Vacuum circuit breaker is a kind of breaker of contact division in the vacuum bubbles of high vacuum, in system for distribution network of power
Play control and protection in operation, operation, maintenance and maintenance situation and whole system are closely related.With voltage class
Raising and installed capacity increase, requirement of the system to power equipment operational reliability is higher and higher, this give power equipment inspection
More stringent requirements are proposed with diagnostic techniques for survey.
In recent years, there is defect and the number of accident occurs being increased in vacuum circuit breaker, as vacuum circuit breaker is in electricity
A wide range of utilization in Force system especially medium voltage network, implementing the necessity of on-line monitoring to vacuum circuit breaker seems more prominent
Go out, existing breaker the parameter of monitoring breaker and can not effectively can not judge the security performance of breaker in real time, deposit
In poor reliability, the problem of accuracy difference and real-time difference.
Invention content
The purpose of the present invention is to provide a kind of vacuum circuit breaker on-line monitoring system, solve existing breaker, nothing
Method is monitored the parameter of breaker, there is a problem of safety is poor, accuracy difference and real-time difference.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of vacuum circuit breaker on-line monitoring system, including data acquisition module, processor and display module, processor point
It is not connect with data acquisition module and display module；
Data acquisition module includes temperature and humidity collection unit, pressure sensing cell, angle detection unit, pull force calculation list
Member, counting unit, control unit, wireless communication unit, control unit respectively with temperature and humidity collection unit, pressure sensing cell,
Angle detection unit, pull force calculation unit, counting unit are connected with wireless communication unit；
Temperature and humidity collection unit is used to acquire the humiture of circuit breaker static contact, and the humiture of detection is sent to control
Unit；
Pressure sensing cell includes pressure sensor and analog-digital converter, and pressure sensor is mounted on the insulator of breaker
In, for detecting when breaker divides/closes a floodgate, spring applies pressure on the insulator, and the pressure of detection is turned through modulus
Parallel operation is converted into digital quantity pressure information, and the pressure information of conversion is sent to control unit；
Angle detection unit is angular transducer, is mounted on contact of breaker, for detecting contact of breaker row in real time
The angle of journey, and the angle of the contact travel of detection is sent to control unit；
Pull force calculation unit is pulling force sensor, is mounted on breaker spring, for detecting breaker spring in real time
Pulling force information, and the pulling force information of detection is sent to control unit；
Counting unit is counter, the number for counting spring elongation, and the number of stretching is sent to control unit；
Control unit is microprocessor, the temperature and humidity information for receiving temperature and humidity collection unit transmission, and will be connect
The temperature and humidity of receipts is compared with preset temperature threshold and humidity threshold one by one respectively, obtains temperature difference and psychrometric difference；
The pressure information suffered by the breaker insulator that pressure sensing cell is sent is received, by the insulation of the pressure information of reception and setting
Son bears pressure threshold value and is compared, and obtains pressure difference；The angle for the contact travel that receiving angle detection unit is sent, to receiving
Angle and several angular values of setting compared one by one, obtain the corresponding stroke of the angle, and control unit is received and drawn
The pulling force information that power detection unit is sent, and the spring tension threshold values of the pulling force information of reception and setting is compared, it obtains
Pulling force difference, wherein spring tension threshold values=0.8* spring maximum pulls.
Control unit counts breaker according to temperature difference, psychrometric difference, pressure difference, pulling force difference and spring elongation number
Security evaluation coefficient W, control unit is by the humiture of reception, pressure, contact travel, pressure and spring elongation number and statistics
Breaker safe metewand be sent to processor through wireless communication unit；
Humiture, pressure, contact travel, pressure and the spring that processor receives the breaker that wireless communication unit is sent are drawn
Stretch number and the breaker safe metewand of statistics, and by the humiture of breaker, pressure, contact travel, pressure and bullet
Spring drawing numbers and the breaker safe metewand of statistics are sent to display terminal, meanwhile, open circuit of the processor to reception
Device security evaluation coefficient and the breaker safe metewand of setting are compared, once breaker safe metewand is more than to set
Fixed breaker safe metewand, then processor send prompting message to display terminal；
Display terminal is used to receive breaker real time humiture, pressure, contact travel, pressure and the spring of processor transmission
Drawing numbers and the breaker safe metewand of statistics are simultaneously shown and are reminded.
Further, the calculation formula of the security evaluation coefficient of breaker isΔ w is expressed as
Difference between the temperature of detection and preset temperature threshold, Δ s are expressed as the difference between the humidity and preset humidity threshold of detection
Value, Δ y are expressed as the difference that the pressure detected bears pressure threshold value with insulator, and Δ l is expressed as detection spring pressure and setting
Spring tension threshold values between difference, n is expressed as spring elongation number.
Further, the temperature and humidity collection unit includes Temperature Humidity Sensor and analog-digital converter, Temperature Humidity Sensor
At the static contact of breaker, the temperature and humidity for detecting circuit breaker static contact in real time, and by the temperature of detection and
Humidity carries out analog-digital converter and is converted into digital quantity temperature and humidity information.
Beneficial effects of the present invention：
Vacuum circuit breaker on-line monitoring system provided by the invention, by each unit in data acquisition module to breaker
In humiture, pressure, pulling force and stroke etc. be acquired and analyze, convenient for the security evaluation coefficient of statistics breaker, and real
The multi-faceted detection to breaker is showed, has realized on-line monitoring, has substantially increased real-time during breaker is monitored on-line
Property, accuracy and reliability.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is a kind of schematic diagram of vacuum circuit breaker on-line monitoring system in the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Refering to Figure 1, a kind of vacuum circuit breaker on-line monitoring system, including data acquisition module, processor and aobvious
Show that module, processor are connect with data acquisition module and display module respectively；
Data acquisition module includes temperature and humidity collection unit, pressure sensing cell, angle detection unit, pull force calculation list
Member, counting unit, control unit, wireless communication unit, control unit respectively with temperature and humidity collection unit, pressure sensing cell,
Angle detection unit, pull force calculation unit, counting unit are connected with wireless communication unit；
Temperature and humidity collection unit includes Temperature Humidity Sensor and analog-digital converter, and Temperature Humidity Sensor is mounted on breaker
At static contact, the temperature and humidity for detecting circuit breaker static contact in real time, and the temperature and humidity of detection is subjected to modulus and is turned
Parallel operation is converted into digital quantity temperature and humidity information, and the temperature and humidity information of conversion is sent to control unit；
Pressure sensing cell includes pressure sensor and analog-digital converter, and pressure sensor is mounted on the insulator of breaker
In, for detecting when breaker divides/closes a floodgate, spring applies pressure on the insulator, and the pressure of detection is turned through modulus
Parallel operation is converted into digital quantity pressure information, and the pressure information of conversion is sent to control unit；
Angle detection unit is angular transducer, is mounted on contact of breaker, for detecting contact of breaker row in real time
The angle of journey, and the angle of the contact travel of detection is sent to control unit；
Pull force calculation unit is pulling force sensor, is mounted on breaker spring, for detecting breaker spring in real time
Pulling force information, and the pulling force information of detection is sent to control unit；
Counting unit is counter, the number for counting spring elongation, and the number of stretching is sent to control unit；
Control unit is microprocessor, the temperature and humidity information for receiving temperature and humidity collection unit transmission, and will be connect
The temperature and humidity of receipts is compared with preset temperature threshold and humidity threshold one by one respectively, obtains temperature difference and psychrometric difference；
The pressure information suffered by the breaker insulator that pressure sensing cell is sent is received, by the insulation of the pressure information of reception and setting
Son bears pressure threshold value and is compared, and obtains pressure difference；The angle for the contact travel that receiving angle detection unit is sent, to receiving
Angle and several angular values of setting compared one by one, obtain the corresponding stroke of the angle, and control unit is received and drawn
The pulling force information that power detection unit is sent, and the spring tension threshold values of the pulling force information of reception and setting is compared, it obtains
Pulling force difference, wherein spring tension threshold values=0.8* spring maximum pulls.
Control unit counts breaker according to temperature difference, psychrometric difference, pressure difference, pulling force difference and spring elongation number
Security evaluation coefficientΔ w is expressed as the difference between the temperature and preset temperature threshold of detection, Δ
S is expressed as the difference between the humidity and preset humidity threshold of detection, and Δ y is expressed as the pressure of detection and insulator bears pressure
The difference of threshold values, Δ l are expressed as the difference between detection spring pressure and the spring tension threshold values of setting, and n is expressed as spring elongation
Number.
Meanwhile control unit is by the humiture of reception, pressure, contact travel, pressure and spring elongation number and statistics
Breaker safe metewand be sent to processor through wireless communication unit；
Humiture, pressure, contact travel, pressure and the spring that processor receives the breaker that wireless communication unit is sent are drawn
Stretch number and the breaker safe metewand of statistics, and by the humiture of breaker, pressure, contact travel, pressure and bullet
Spring drawing numbers and the breaker safe metewand of statistics are sent to display terminal, meanwhile, open circuit of the processor to reception
Device security evaluation coefficient and the breaker safe metewand of setting are compared, once breaker safe metewand is more than to set
Fixed breaker safe metewand, then processor send prompting message to display terminal.
Display terminal is used to receive breaker real time humiture, pressure, contact travel, pressure and the spring of processor transmission
Drawing numbers and the breaker safe metewand of statistics are simultaneously shown.
Vacuum circuit breaker on-line monitoring system provided by the invention, by each unit in data acquisition module to breaker
In humiture, pressure, pulling force and stroke etc. be acquired and analyze, convenient for the security evaluation coefficient of statistics breaker, and real
The multi-faceted detection to breaker is showed, has realized on-line monitoring, has substantially increased real-time during breaker is monitored on-line
Property, accuracy and reliability.
The above content is just an example and description of the concept of the present invention, affiliated those skilled in the art
It makes various modifications or additions to the described embodiments or substitutes by a similar method, without departing from invention
Design or beyond the scope defined by this claim, be within the scope of protection of the invention.
Claims (3)
1. a kind of vacuum circuit breaker on-line monitoring system, it is characterised in that：Including data acquisition module, processor, communications
Module and display module, processor are connect with data acquisition module and communication transmission module respectively；
It includes temperature and humidity collection unit, pressure sensing cell, angle that communication transmission module, which connect data acquisition module with display module,
Detection unit, pull force calculation unit, counting unit, control unit, wireless communication unit are spent, control unit is adopted with humiture respectively
Collection unit, pressure sensing cell, angle detection unit, pull force calculation unit, counting unit are connected with wireless communication unit；
Temperature and humidity collection unit is used to acquire the humiture of circuit breaker static contact, and the humiture of detection is sent to control list
Member；
Pressure sensing cell includes pressure sensor and analog-digital converter, and pressure sensor is mounted in the insulator of breaker,
For detecting when breaker divides/closes a floodgate, spring applies pressure on the insulator, and by the pressure of detection through analog-digital converter
It is converted into digital quantity pressure information, the pressure information of conversion is sent to control unit；
Angle detection unit is angular transducer, is mounted on contact of breaker, for detecting contact of breaker stroke in real time
Angle, and the angle of the contact travel of detection is sent to control unit；
Pull force calculation unit is pulling force sensor, is mounted on breaker spring, for detecting the drawing on breaker spring in real time
Force information, and the pulling force information of detection is sent to control unit；
Counting unit is counter, the number for counting spring elongation, and the number of stretching is sent to control unit；
Control unit is microprocessor, the temperature and humidity information for receiving temperature and humidity collection unit transmission, and by reception
Temperature and humidity is compared with preset temperature threshold and humidity threshold one by one respectively, obtains temperature difference and psychrometric difference；It receives
The pressure information suffered by breaker insulator that pressure sensing cell is sent, the insulator of the pressure information of reception and setting is held
It is compared by pressure threshold value, obtains pressure difference；The angle for the contact travel that receiving angle detection unit is sent, to the angle of reception
It spends and is compared one by one with several angular values of setting, obtain the corresponding stroke of the angle, and control unit receives pulling force inspection
The pulling force information that unit is sent is surveyed, and the spring tension threshold values of the pulling force information of reception and setting is compared, obtains pulling force
Difference, wherein spring tension threshold values=0.8* spring maximum pulls.
Control unit counts the safety of breaker according to temperature difference, psychrometric difference, pressure difference, pulling force difference and spring elongation number
Metewand W, control unit is by the disconnected of the humiture of reception, pressure, contact travel, pressure and spring elongation number and statistics
Road device security evaluation coefficient is sent to processor through wireless communication unit；
Processor receives humiture, pressure, contact travel, pressure and the spring elongation time for the breaker that wireless communication unit is sent
The breaker safe metewand of number and statistics, and the humiture of breaker, pressure, contact travel, pressure and spring are drawn
The breaker safe metewand for stretching number and statistics is sent to display terminal, meanwhile, processor pacifies the breaker of reception
Full metewand and the breaker safe metewand of setting are compared, once breaker safe metewand is more than setting
Breaker safe metewand, then processor send prompting message to display terminal；
Display terminal is used to receive breaker real time humiture, pressure, contact travel, pressure and the spring elongation of processor transmission
Number and the breaker safe metewand of statistics are simultaneously shown and are reminded.
2. a kind of vacuum circuit breaker on-line monitoring system according to claim 1, it is characterised in that：The safety of breaker is commented
The calculation formula for estimating coefficient isΔ w is expressed as the difference between the temperature and preset temperature threshold of detection
Value, Δ s are expressed as the difference between the humidity and preset humidity threshold of detection, and the pressure that Δ y is expressed as detection is held with insulator
By the difference of pressure threshold value, Δ l is expressed as the difference between detection spring pressure and the spring tension threshold values of setting, and n is expressed as bullet
Spring drawing numbers.
3. a kind of vacuum circuit breaker on-line monitoring system according to claim 1, it is characterised in that：The humiture collection
Unit includes Temperature Humidity Sensor and analog-digital converter, and Temperature Humidity Sensor is mounted at the static contact of breaker, for real-time
The temperature and humidity of circuit breaker static contact is detected, and the temperature and humidity of detection progress analog-digital converter is converted into digital quantity temperature
Degree and humidity information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903764.XA CN108775929B (en) | 2018-08-09 | 2018-08-09 | Vacuum circuit breaker on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903764.XA CN108775929B (en) | 2018-08-09 | 2018-08-09 | Vacuum circuit breaker on-line monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775929A true CN108775929A (en) | 2018-11-09 |
| CN108775929B CN108775929B (en) | 2020-11-10 |
Family
ID=64028520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810903764.XA Active CN108775929B (en) | 2018-08-09 | 2018-08-09 | Vacuum circuit breaker on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108775929B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613380A (en) * | 2019-02-19 | 2019-04-12 | 广东电网有限责任公司 | On-pole switch complete set of equipments method for evaluating state, device, system and server |
| CN110103133A (en) * | 2019-06-25 | 2019-08-09 | 吉姆西半导体科技（无锡）有限公司 | The micro- missing inspection examining system of grinding head |
| CN116317138A (en) * | 2023-03-15 | 2023-06-23 | 国家电投集团云南国际电力投资有限公司 | Circuit breaker control system |
| CN117393375A (en) * | 2023-12-08 | 2024-01-12 | 陕西四方华能电气设备有限公司 | High-voltage vacuum circuit breaker |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201846138U (en) * | 2010-11-17 | 2011-05-25 | 国电南瑞科技股份有限公司 | Breaker intelligent assembly based on unified section data acquisition |
| CN201993374U (en) * | 2011-02-24 | 2011-09-28 | 常州市明及电气技术开发有限公司 | Intelligent on-line speed monitoring device for vacuum circuit breaker |
| CN202676874U (en) * | 2012-06-29 | 2013-01-16 | 沈阳工业大学 | Breaker insulating coefficient prediction device |
| EP2584366A2 (en) * | 2011-10-21 | 2013-04-24 | Schneider Electric Industries SAS | A relay with an intermediate alert mechanism |
| KR20150043162A (en) * | 2013-10-14 | 2015-04-22 | 한국전력공사 | Apparatus and method for real time monitoring of sulfur hexaflouride gas |
| CN204462331U (en) * | 2015-02-26 | 2015-07-08 | 厦门华电开关有限公司 | Vacuum breaker mechanical features on-line monitoring system |
| CN104819744A (en) * | 2015-05-08 | 2015-08-05 | 陕西西高开关有限责任公司 | High-voltage circuit breaker on-line monitoring method |
| CN105629164A (en) * | 2016-02-16 | 2016-06-01 | 云南电网有限责任公司昆明供电局 | Device and method for monitoring state of energy storage spring of circuit breaker |
| CN205404752U (en) * | 2016-02-16 | 2016-07-27 | 云南电网有限责任公司昆明供电局 | Circuit breaker energy storage spring state monitoring facilities |
| CN107015145A (en) * | 2017-06-01 | 2017-08-04 | 湖州知维技术服务有限公司 | Primary cut-out is monitored on-line and state evaluation system |
| CN107102261A (en) * | 2017-06-19 | 2017-08-29 | 贵州电网有限责任公司电力科学研究院 | A kind of SF6 breaker micro-water content on-line monitoring systems based on radio communication |
-
2018
- 2018-08-09 CN CN201810903764.XA patent/CN108775929B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201846138U (en) * | 2010-11-17 | 2011-05-25 | 国电南瑞科技股份有限公司 | Breaker intelligent assembly based on unified section data acquisition |
| CN201993374U (en) * | 2011-02-24 | 2011-09-28 | 常州市明及电气技术开发有限公司 | Intelligent on-line speed monitoring device for vacuum circuit breaker |
| EP2584366A2 (en) * | 2011-10-21 | 2013-04-24 | Schneider Electric Industries SAS | A relay with an intermediate alert mechanism |
| CN202676874U (en) * | 2012-06-29 | 2013-01-16 | 沈阳工业大学 | Breaker insulating coefficient prediction device |
| KR20150043162A (en) * | 2013-10-14 | 2015-04-22 | 한국전력공사 | Apparatus and method for real time monitoring of sulfur hexaflouride gas |
| CN204462331U (en) * | 2015-02-26 | 2015-07-08 | 厦门华电开关有限公司 | Vacuum breaker mechanical features on-line monitoring system |
| CN104819744A (en) * | 2015-05-08 | 2015-08-05 | 陕西西高开关有限责任公司 | High-voltage circuit breaker on-line monitoring method |
| CN105629164A (en) * | 2016-02-16 | 2016-06-01 | 云南电网有限责任公司昆明供电局 | Device and method for monitoring state of energy storage spring of circuit breaker |
| CN205404752U (en) * | 2016-02-16 | 2016-07-27 | 云南电网有限责任公司昆明供电局 | Circuit breaker energy storage spring state monitoring facilities |
| CN107015145A (en) * | 2017-06-01 | 2017-08-04 | 湖州知维技术服务有限公司 | Primary cut-out is monitored on-line and state evaluation system |
| CN107102261A (en) * | 2017-06-19 | 2017-08-29 | 贵州电网有限责任公司电力科学研究院 | A kind of SF6 breaker micro-water content on-line monitoring systems based on radio communication |
Non-Patent Citations (1)
| Title |
|---|
| 易慧 等: "基于DSP 的高压断路器综合在线监测装置", 《高压电器》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613380A (en) * | 2019-02-19 | 2019-04-12 | 广东电网有限责任公司 | On-pole switch complete set of equipments method for evaluating state, device, system and server |
| CN109613380B (en) * | 2019-02-19 | 2020-11-06 | 广东电网有限责任公司 | State evaluation method, device and system for pole-mounted switch complete equipment and server |
| CN110103133A (en) * | 2019-06-25 | 2019-08-09 | 吉姆西半导体科技（无锡）有限公司 | The micro- missing inspection examining system of grinding head |
| CN116317138A (en) * | 2023-03-15 | 2023-06-23 | 国家电投集团云南国际电力投资有限公司 | Circuit breaker control system |
| CN116317138B (en) * | 2023-03-15 | 2024-03-26 | 国家电投集团云南国际电力投资有限公司 | Circuit breaker control system |
| CN117393375A (en) * | 2023-12-08 | 2024-01-12 | 陕西四方华能电气设备有限公司 | High-voltage vacuum circuit breaker |
| CN117393375B (en) * | 2023-12-08 | 2024-02-02 | 陕西四方华能电气设备有限公司 | High-voltage vacuum circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108775929B (en) | 2020-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108775929A (en) | A kind of vacuum circuit breaker on-line monitoring system | |
| CN201307148Y (en) | Power transmission line pole and tower ground fault monitoring and positioning device | |
| CN103499774A (en) | Electricity transmission insulator arc-over on-line monitoring and safety early-warning device | |
| CN107064735A (en) | A kind of transmission line malfunction Visualized Monitoring System and method | |
| CN101666851A (en) | Insulation, voltage, grounding test and grounding finding device and use method thereof | |
| CN110780227A (en) | Online monitoring device and method for leakage current of lightning arrester of power transmission line | |
| CN107270970A (en) | Towering power equipment vibration monitoring device and its method for carrying out fault diagnosis | |
| CN107490769B (en) | A kind of fuel cell water distribution visualization on-line detecting system | |
| CN200975900Y (en) | Online early-warning device for icing and galloping of transmission line | |
| CN108172870A (en) | It is a kind of for the deficency detection device of fuel cell and deficency detection method | |
| CN201233385Y (en) | Insulator dirt on-line detecting instrument | |
| CN105680909A (en) | Monitoring equipment used for broadband power line carrier communication network | |
| CN107884675A (en) | Monitoring device with transmission line lightning stroke fault location | |
| CN114384371A (en) | Service center, monitoring terminal and system for power line fault detection | |
| CN203149066U (en) | Distributed on-line insulation monitoring device for electrical network operation equipment | |
| CN202393833U (en) | SiC resistance property detector | |
| CN209803973U (en) | Online range finding ice condition early warning device of transmission line icing | |
| CN104049286A (en) | Tipping-bucket rain gauge | |
| CN103630800A (en) | Live insulator detecting system, live insulator detector and handheld receiving terminal | |
| CN203616426U (en) | Insulator electrified detection system, insulator electrified detector and handheld receiving terminal | |
| CN114280430B (en) | Insulator flashover on-line monitoring system of high-voltage transmission line | |
| CN109738765A (en) | A kind of non-intrusion type transmission open acess system | |
| CN115508653A (en) | Power transmission and transformation arrester state on-line monitoring system | |
| CN109658678A (en) | A kind of smart city data acquisition device based on 5G wireless communication | |
| CN208999545U (en) | A kind of wireless battery management system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |