CN105527600A - Current transformer state monitoring system and method - Google Patents
Current transformer state monitoring system and method Download PDFInfo
- Publication number
- CN105527600A CN105527600A CN201610019965.4A CN201610019965A CN105527600A CN 105527600 A CN105527600 A CN 105527600A CN 201610019965 A CN201610019965 A CN 201610019965A CN 105527600 A CN105527600 A CN 105527600A
- Authority
- CN
- China
- Prior art keywords
- unit
- monitoring
- current transformer
- wireless communication
- 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
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Abstract
The invention provides a current transformer state monitoring system and method. The current transformer state monitoring system is characterized in that the system comprises a controller unit, a current transformer monitoring unit, a temperature monitoring unit, a humidity monitoring unit, a wireless communication unit, a monitoring processing unit, a status display unit, a voice alarm unit and a power supply unit. The system and method can monitor the running state of a current transformer online, can collect the operation parameters of the current transformer in real time, can realize wireless in-station transmission of monitoring data of the current transformer, can carry out identification and diagnosis on operation troubles of the current transformer, realize state monitoring and fault early warning of the current transformer, carry out voice alarm on fault information of the current transformer and send the fault alarm information to working personnel wirelessly for timely processing, thereby ensuring normal operation of the current transformer.
Description
Technical field
The invention belongs to POWER SYSTEM STATE monitoring field, relate to a kind of condition monitoring system and method for power equipment, particularly a kind of current transformer condition monitoring system and method.
Background technology
Mutual inductor is one of indispensable major equipments such as power network normally runs, monitors, measures, protects, control.Its existence, makes high voltage, big current information is applied.Mutual inductor running status is good and bad, directly has influence on the reliability of power system measuring, the accuracy of metering and relay protection, aut.eq., on safe operation of power system impact greatly.
At present, in electric system, the use of current transformer is extensive, and does not well study for the status monitoring problem of current transformer itself and solve.Current transformer itself also exists performance issue and failure problems, once current transformer generation running status is abnormal and fault will have a strong impact on the safe operation of electric system.Therefore, need a kind of current transformer condition monitoring system and method can the state of on-line real time monitoring current transformer, to the diagnosing malfunction of current transformer, find and solve the fault that current transformer exists early, ensure the normal operation of current transformer.
Summary of the invention
The present invention is directed to prior art and cannot solve above-mentioned current transformer Problems existing, provide a kind of current transformer condition monitoring system and method.Current transformer condition monitoring system carries out on-line monitoring to the running status of current transformer, the operational factor of Real-time Collection current transformer, can be realized standing the wireless transmission of interior current transformer Monitoring Data, complete the identification to current transformer operation troubles, in real time to current transformer status monitoring and fault pre-alarming, audio alert is carried out to current mulual inductor malfunction information, fault alarm information is wirelessly sent to staff and processes in time, ensure the normal operation of current transformer.
In order to complete above-mentioned purpose, the present invention by the following technical solutions.
A kind of current transformer condition monitoring system, it is characterized in that, described current transformer condition monitoring system comprises: controller unit, current transformer monitoring means, temperature monitoring unit, humidity-monitoring unit, wireless communication unit, monitoring processing unit, status display unit, audio alert unit, power supply unit.Described controller unit is connected with current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, power supply unit respectively.Described power supply unit is connected with controller unit, current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit respectively.Described temperature monitoring unit, monitoring processing unit are connected with wireless communication unit.
Described controller unit respectively with current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, power supply unit connects, receive process current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, the information that power supply unit transmission comes and data, and to current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, power supply unit transmission command information and data, control corresponding units and complete corresponding function.
Described current transformer monitoring means is connected with controller unit, for realizing the monitoring of Current Transformer Secondary side electric current.Current transformer monitoring means comprises power pack, low-pass filter, polarity switch, analog to digital converter.
Described temperature monitoring unit is connected with wireless communication unit, the temperature in the running temperature of Real-Time Monitoring current transformer and the bus of mutual inductor inlet wire.Temperature monitoring unit comprises fiber-optic grating sensor, light box, seal flange, fiber optic closure, fiber Bragg grating (FBG) demodulator along separate routes.
Described humidity-monitoring unit is connected with controller unit, for the humidity of the running environment of Real-Time Monitoring current transformer.Humidity-monitoring unit comprises humidity sensor.
Described wireless communication unit is used for controller unit, temperature monitoring unit carries out real-time exchanges data with monitoring processing unit and transmits and data processing, for the current mulual inductor malfunction information of monitoring processing unit processes is sent SMS prompting to staff.Wireless communication unit comprises ZigBee communication module, SMS transmission module.Described ZigBee communication module is arranged on controller unit, temperature monitoring unit, monitoring processing unit respectively, the radio communication realizing controller unit, temperature monitoring unit and monitor between processing unit.Described SMS transmission module is arranged on monitoring processing unit, realizes monitoring processing unit and sends SMS prompting current mulual inductor malfunction information to staff.
Described monitoring processing unit is used for received current mutual inductor and runs the Monitoring Data of field controller cell processing and the temperature data of temperature monitoring unit, realize being connected with the data communication of controller unit and temperature monitoring unit by wireless communication unit, complete the data processing to condition monitoring system, fault diagnosis and process and human-computer interaction function.Monitoring processing unit comprises server, host computer.
Described status display unit is connected with controller unit, the Monitoring Data that the current transformer for display controller cell processing runs and the temperature data monitored after processing unit processes analysis and fault diagnosis data.Status display unit comprises display.
Described audio alert unit is connected with controller unit, for carrying out speech play and warning by voice to current flow mutual inductor running status and failure condition.Audio alert unit comprises: audio alert chip, audio amplifier.
Described power supply unit realizes providing suitable electric energy to power to controller unit, current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit.Power supply unit comprises Switching Power Supply.
Described temperature monitoring unit and monitoring processing unit are powered by mains-supplied in Control Room.
A kind of current transformer state monitoring method, it is characterized in that, current transformer state monitoring method comprises the following steps: current transformer monitoring means carries out Real-Time Monitoring to the secondary side current of current transformer, the humidity of the running environment of humidity-monitoring unit Real-Time Monitoring current transformer.The Monitoring Data of controller unit to current transformer monitoring means, humidity-monitoring unit processes, and carries out data communication by wireless communication unit and monitoring processing unit.
Temperature monitoring unit on the inlet wire bus of current transformer, the secondary side outlet joint place of current transformer, temperature on current transformer monitor, and carries out data communication by wireless communication unit and monitoring processing unit.
Monitoring processing unit completes storage and the moving calculation of data, and completes data processing to condition monitoring system, fault diagnosis and process and human-computer interaction function.Monitoring processing unit carries out data communication by wireless communication unit and controller unit, and data processing, fault diagnosis result are fed back to controller unit, and controller unit controls the result output display on display in status display unit monitoring processed.
Audio alert unit carries out speech play and warning by voice to current flow mutual inductor running status and failure condition.
The invention has the beneficial effects as follows: a kind of current transformer condition monitoring system of the present invention and method, can the running status of on-line monitoring leakage current mutual inductor, can the operational factor of Real-time Collection current transformer, can be realized standing the wireless transmission of interior current transformer Monitoring Data, identifying and diagnosing can be carried out to the operation troubles of current transformer, realize the monitoring to current transformer state and fault pre-alarming, audio alert is carried out to current mulual inductor malfunction information, fault alarm information is wirelessly sent to staff process in time, ensure the normal operation of current transformer.
Accompanying drawing explanation
Fig. 1 is current transformer condition monitoring system one-piece construction functional schematic of the present invention.
In figure 1, controller unit, 2, current transformer monitoring means, 3, temperature monitoring unit, 4, humidity-monitoring unit, 5, wireless communication unit, 6, monitoring processing unit, 7, status display unit, 8, audio alert unit, 9, power supply unit.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, specifically to set forth technical scheme of the present invention.
As shown in Figure 1, a kind of current transformer condition monitoring system of the present invention, it is characterized in that, described current transformer condition monitoring system comprises: controller unit 1, current transformer monitoring means 2, temperature monitoring unit 3, humidity-monitoring unit 4, wireless communication unit 5, monitoring processing unit 6, status display unit 7, audio alert unit 8, power supply unit 9.Described controller unit 1 is connected with current transformer monitoring means 2, humidity-monitoring unit 4, wireless communication unit 5, status display unit 7, audio alert unit 8, power supply unit 9 respectively.Described power supply unit 9 is connected with controller unit 1, current transformer monitoring means 2, humidity-monitoring unit 4, wireless communication unit 5, status display unit 7, audio alert unit 8 respectively.Described temperature monitoring unit 3, monitoring processing unit 6 are connected with wireless communication unit 5.
Described controller unit 1 adopts TMS320F2812 data processor as the processor controlling and process data.
Described current transformer monitoring means 2 comprises power pack, low-pass filter, polarity switch, analog to digital converter.Power pack is arranged on the secondary side of current transformer, through low-pass filter, polarity switch, analog to digital converter process obtains signal that in controller unit 1 TMS320F2812 processor can process after converting to Current Transformer Secondary side electric current.
Described temperature monitoring unit 3 comprises fiber-optic grating sensor, light box, seal flange, fiber optic closure, fiber Bragg grating (FBG) demodulator along separate routes.Fiber-optic grating sensor is arranged on the inlet wire bus of current transformer, the secondary side outlet joint place of current transformer, on current transformer.Fiber-optic grating sensor connects light box, seal flange, fiber optic closure, fiber Bragg grating (FBG) demodulator along separate routes successively, and temperature data, to the detection of temperature, is transferred to host computer and server in monitoring processing unit 6 by wireless communication unit 5 by completion system.
Described humidity-monitoring unit 4 comprises humidity sensor.Humidity sensor is arranged near current transformer, the running environment humidity of Real-Time Monitoring current transformer.
Described wireless communication unit 5 comprises ZigBee communication module, SMS transmission module, realize controller unit 1, temperature monitoring unit 3 carries out real-time exchanges data with monitoring processing unit 6 and transmit and data processing, the current mulual inductor malfunction information realizing monitoring processing unit 6 to process sends SMS to staff and points out.
Described monitoring processing unit 6 comprises server, host computer.Server completes storage and the moving calculation of data; Host computer completes data processing to condition monitoring system, fault diagnosis and process and human-computer interaction function.
Described status display unit 7 comprises display.Display is connected with controller unit 1, completes the temperature data after the Condition Monitoring Data and monitoring processing unit 6 Treatment Analysis that the current mutual inductor on site that processes controller unit 1 runs and fault diagnosis data shows.
Described audio alert unit 8 comprises audio alert chip, audio amplifier.Audio alert chip is connected with controller unit 1, and audio alert chip is connected with audio amplifier, completes and carries out speech play and warning by voice to current flow mutual inductor running status and failure condition.
Described power supply unit 9 comprises Switching Power Supply, runs on-the-spot low-voltage electric energy convert the voltage and current obtaining applicable condition monitoring system scene and run by Switching Power Supply to current transformer.
The power supply of described temperature monitoring unit 3 and monitoring processing unit 6 is by mains-supplied in Control Room.
A kind of current transformer condition monitoring system principle of work is as follows: the secondary side current of current transformer monitoring means 2 pairs of current transformers carries out Real-Time Monitoring, the humidity of the running environment of humidity-monitoring unit 4 Real-Time Monitoring current transformer.The Monitoring Data of controller unit 1 pair of current transformer monitoring means 2, humidity-monitoring unit 4 processes, and carries out data communication by wireless communication unit 5 and monitoring processing unit 6.
On the inlet wire bus of temperature monitoring unit 3 pairs of current transformers, the secondary side outlet joint place of current transformer, temperature on current transformer monitor, and carries out data communication by wireless communication unit 5 and monitoring processing unit 6.
Monitoring processing unit 6 completes storage and the moving calculation of data, and completes data processing to condition monitoring system, fault diagnosis and process and human-computer interaction function.Monitoring processing unit 6 carries out data communication by wireless communication unit 5 and controller unit 1, data processing, fault diagnosis result are fed back to controller unit 1, and controller unit 1 controls result output display on display in status display unit 7 of monitoring process.
Audio alert unit 8 carries out speech play and warning by voice to current flow mutual inductor running status and failure condition.
Through above current transformer condition monitoring system of the present invention and the embodiment of the method course of work, complete the running status of on-line monitoring leakage current mutual inductor, can the operational factor of Real-time Collection current transformer, can be realized standing the wireless transmission of interior current transformer Monitoring Data, identifying and diagnosing can be carried out to the operation troubles of current transformer, realize the monitoring to current transformer state and fault pre-alarming, audio alert is carried out to current mulual inductor malfunction information, fault alarm information is wirelessly sent to staff process in time, ensure the normal operation of current transformer.
Claims (2)
1. a current transformer condition monitoring system, it is characterized in that, described current transformer condition monitoring system comprises: controller unit, current transformer monitoring means, temperature monitoring unit, humidity-monitoring unit, wireless communication unit, monitoring processing unit, status display unit, audio alert unit, power supply unit; Described controller unit is connected with current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, power supply unit respectively; Described power supply unit is connected with controller unit, current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit respectively; Described temperature monitoring unit, monitoring processing unit are connected with wireless communication unit;
Described controller unit respectively with current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, power supply unit connects, receive process current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, the information that power supply unit transmission comes and data, and to current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit, power supply unit transmission command information and data, control corresponding units and complete corresponding function,
Described current transformer monitoring means is connected with controller unit, for realizing the monitoring of Current Transformer Secondary side electric current; Current transformer monitoring means comprises power pack, low-pass filter, polarity switch, analog to digital converter;
Described temperature monitoring unit is connected with wireless communication unit, the temperature in the running temperature of Real-Time Monitoring current transformer and the bus of mutual inductor inlet wire; Temperature monitoring unit comprises fiber-optic grating sensor, light box, seal flange, fiber optic closure, fiber Bragg grating (FBG) demodulator along separate routes;
Described humidity-monitoring unit is connected with controller unit, for the humidity of the running environment of Real-Time Monitoring current transformer; Humidity-monitoring unit comprises humidity sensor;
Described wireless communication unit is used for controller unit, temperature monitoring unit carries out real-time exchanges data with monitoring processing unit and transmits and data processing, for the current mulual inductor malfunction information of monitoring processing unit processes is sent SMS prompting to staff; Wireless communication unit comprises ZigBee communication module, SMS transmission module; Described ZigBee communication module is arranged on controller unit, temperature monitoring unit, monitoring processing unit respectively, the radio communication realizing controller unit, temperature monitoring unit and monitor between processing unit; Described SMS transmission module is arranged on monitoring processing unit, realizes monitoring processing unit and sends SMS prompting current mulual inductor malfunction information to staff;
Described monitoring processing unit is used for received current mutual inductor and runs the Monitoring Data of field controller cell processing and the temperature data of temperature monitoring unit, realize being connected with the data communication of controller unit and temperature monitoring unit by wireless communication unit, complete the data processing to condition monitoring system, fault diagnosis and process and human-computer interaction function; Monitoring processing unit comprises server, host computer;
Described status display unit is connected with controller unit, the Monitoring Data that the current transformer for display controller cell processing runs and the temperature data monitored after processing unit processes analysis and fault diagnosis data; Status display unit comprises display;
Described audio alert unit is connected with controller unit, for carrying out speech play and warning by voice to current flow mutual inductor running status and failure condition; Audio alert unit comprises: audio alert chip, audio amplifier;
Described power supply unit realizes providing suitable electric energy to power to controller unit, current transformer monitoring means, humidity-monitoring unit, wireless communication unit, status display unit, audio alert unit; Power supply unit comprises Switching Power Supply.
2. a current transformer state monitoring method, it is characterized in that, current transformer state monitoring method comprises the following steps: current transformer monitoring means carries out Real-Time Monitoring to the secondary side current of current transformer, the humidity of the running environment of humidity-monitoring unit Real-Time Monitoring current transformer; The Monitoring Data of controller unit to current transformer monitoring means, humidity-monitoring unit processes, and carries out data communication by wireless communication unit and monitoring processing unit;
Temperature monitoring unit on the inlet wire bus of current transformer, the secondary side outlet joint place of current transformer, temperature on current transformer monitor, and carries out data communication by wireless communication unit and monitoring processing unit;
Monitoring processing unit completes storage and the moving calculation of data, and completes data processing to condition monitoring system, fault diagnosis and process and human-computer interaction function; Monitoring processing unit carries out data communication by wireless communication unit and controller unit, and data processing, fault diagnosis result are fed back to controller unit, and controller unit controls the result output display on display in status display unit monitoring processed;
Audio alert unit carries out speech play and warning by voice to current flow mutual inductor running status and failure condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019965.4A CN105527600B (en) | 2016-01-13 | 2016-01-13 | A kind of current transformer condition monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019965.4A CN105527600B (en) | 2016-01-13 | 2016-01-13 | A kind of current transformer condition monitoring system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105527600A true CN105527600A (en) | 2016-04-27 |
| CN105527600B CN105527600B (en) | 2018-07-13 |
Family
ID=55769938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610019965.4A Expired - Fee Related CN105527600B (en) | 2016-01-13 | 2016-01-13 | A kind of current transformer condition monitoring system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105527600B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040475A (en) * | 2019-04-30 | 2019-07-23 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of Quality Monitoring Control System and method of current transformer test assembly line |
| CN110196082A (en) * | 2019-07-11 | 2019-09-03 | 谢明仿 | A kind of environment monitoring device and method of electronic mutual inductor |
| CN110687493A (en) * | 2019-09-30 | 2020-01-14 | 国网江苏省电力有限公司盐城供电分公司 | Current transformer on-line measuring system based on multiple signal acquisition |
| CN110702964A (en) * | 2018-12-07 | 2020-01-17 | 上海产业技术研究院 | Instrument monitoring device, monitor and storage medium based on NB-IOT communication technology |
| CN112557991A (en) * | 2020-11-12 | 2021-03-26 | 珠海一多监测科技有限公司 | Current transformer fault diagnosis method based on mole number and temperature |
| CN112630506A (en) * | 2020-11-30 | 2021-04-09 | 众源科技(广东)股份有限公司 | Wireless transmission current temperature transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60152964A (en) * | 1984-01-23 | 1985-08-12 | Toshiba Corp | Tester for through type current transformer |
| JP2009025055A (en) * | 2007-07-18 | 2009-02-05 | Kawamura Electric Inc | Output converting circuit for current transformer |
| CN104330759A (en) * | 2014-11-06 | 2015-02-04 | 国家电网公司 | Value traceability and monitoring method for low-voltage current transformer automation verification system |
| CN204241588U (en) * | 2014-11-11 | 2015-04-01 | 国家电网公司 | Current transformer operating state monitoring system |
| CN104698311A (en) * | 2015-02-25 | 2015-06-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | System and method for electrically detecting DC arrester of DC circuit |
| CN205353340U (en) * | 2016-01-13 | 2016-06-29 | 济南大学 | Current transformer state monitoring system |
-
2016
- 2016-01-13 CN CN201610019965.4A patent/CN105527600B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60152964A (en) * | 1984-01-23 | 1985-08-12 | Toshiba Corp | Tester for through type current transformer |
| JP2009025055A (en) * | 2007-07-18 | 2009-02-05 | Kawamura Electric Inc | Output converting circuit for current transformer |
| CN104330759A (en) * | 2014-11-06 | 2015-02-04 | 国家电网公司 | Value traceability and monitoring method for low-voltage current transformer automation verification system |
| CN204241588U (en) * | 2014-11-11 | 2015-04-01 | 国家电网公司 | Current transformer operating state monitoring system |
| CN104698311A (en) * | 2015-02-25 | 2015-06-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | System and method for electrically detecting DC arrester of DC circuit |
| CN205353340U (en) * | 2016-01-13 | 2016-06-29 | 济南大学 | Current transformer state monitoring system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702964A (en) * | 2018-12-07 | 2020-01-17 | 上海产业技术研究院 | Instrument monitoring device, monitor and storage medium based on NB-IOT communication technology |
| CN110040475A (en) * | 2019-04-30 | 2019-07-23 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of Quality Monitoring Control System and method of current transformer test assembly line |
| CN110196082A (en) * | 2019-07-11 | 2019-09-03 | 谢明仿 | A kind of environment monitoring device and method of electronic mutual inductor |
| CN110687493A (en) * | 2019-09-30 | 2020-01-14 | 国网江苏省电力有限公司盐城供电分公司 | Current transformer on-line measuring system based on multiple signal acquisition |
| CN112557991A (en) * | 2020-11-12 | 2021-03-26 | 珠海一多监测科技有限公司 | Current transformer fault diagnosis method based on mole number and temperature |
| CN112630506A (en) * | 2020-11-30 | 2021-04-09 | 众源科技(广东)股份有限公司 | Wireless transmission current temperature transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105527600B (en) | 2018-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105527600A (en) | Current transformer state monitoring system and method | |
| CN103116331A (en) | Intelligent substation safety monitoring and pre-warning system | |
| CN105510862A (en) | Voltage transformer state monitoring system and method | |
| CN105049282A (en) | Intelligent relay protection device control overhauling method based on on-line monitoring information | |
| CN204761154U (en) | New forms of energy power station failure recognition and state monitoring system | |
| CN205353340U (en) | Current transformer state monitoring system | |
| CN205389136U (en) | Cable branch case standard management system | |
| CN205317922U (en) | Voltage transformer state monitoring system | |
| CN204243909U (en) | A kind of SF 6primary cut-out Leakage Gas remote monitoring device | |
| CN104682566A (en) | Fault recognition and condition monitoring system for new energy source power station | |
| CN111157838A (en) | Intelligent management system for big data of running state of railway power distribution network | |
| CN203520111U (en) | Intelligent and concentrated cable trench monitoring system | |
| CN105137954A (en) | Real-time on-line temperature and humidity monitoring system of transformer substation | |
| CN203056683U (en) | Box-type transformer station intelligent monitoring system | |
| CN205374718U (en) | Tradition mutual -inductor state monitoring system | |
| CN203054143U (en) | Indoor transformer station busbar voltage abnormity alarm indicating device | |
| CN103199626A (en) | Switch cabinet integrated monitoring terminal | |
| CN105487038A (en) | Traditional transformer state monitoring system and method | |
| CN206378569U (en) | A kind of voltage relay abnormal detector | |
| CN205355956U (en) | Telemetering measurement remote control intelligence low pressure pull -out type cubical switchboard | |
| CN204945734U (en) | For the long distance control system of secondary water-supply equipment | |
| CN210668213U (en) | Gas density relay and monitoring system with insulation performance self-testing function | |
| CN203800701U (en) | Intelligent power distribution control system | |
| CN202197149U (en) | Transformer station safety early warning system | |
| CN107065724A (en) | A kind of intelligent attended computer device people system of switchgear house and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 Termination date: 20200113 |