CN113311257A - Comprehensive monitoring device for electric equipment - Google Patents
Comprehensive monitoring device for electric equipment Download PDFInfo
- Publication number
- CN113311257A CN113311257A CN202110465519.7A CN202110465519A CN113311257A CN 113311257 A CN113311257 A CN 113311257A CN 202110465519 A CN202110465519 A CN 202110465519A CN 113311257 A CN113311257 A CN 113311257A
- Authority
- CN
- China
- Prior art keywords
- module
- monitoring device
- circuit
- acquisition module
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims description 28
- 230000008859 change Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a comprehensive monitoring device for electric equipment, which comprises a circuit monitoring device, wherein the circuit monitoring device is used for being installed on a circuit where the electric equipment is located, and the circuit monitoring device comprises: the power supply module is used for supplying power; the working information acquisition module is used for acquiring the working information of the circuit where the electric equipment comprehensive monitoring device is located; the processing module is used for extracting the working information acquired by the working information acquisition module, analyzing and processing the working information and forming processed data; the data display module is used for displaying the processed data; the communication module is used for sending data to the outside; and the time synchronization module is used for automatically synchronizing time. Compared with the prior art, the invention is formed by modularized splicing, has adjustable functions and is convenient to overhaul and replace.
Description
Technical Field
The invention relates to a monitoring device, in particular to a comprehensive monitoring device for electric equipment.
Background
The comprehensive monitoring device for power utilization is an important device in a power generation, transformation and distribution system, is usually used for monitoring various power parameters of a line, including main parameters such as current, voltage, power, frequency and electric energy, and can visually see the change of current power load and power parameters. In the actual use process, due to the change of the power grid and the field load or the switching value, the sudden change of the current or the voltage and the power can be directly caused, so that the change of the power quality is caused, and certain economic loss is caused. The current electricity utilization monitoring equipment on the market only has the most basic functions of measurement and data transmission of 485 interfaces, the wiring mode is single, the wiring mode cannot be adjusted according to the actual field, and the electricity utilization monitoring equipment does not have the functions of memory and fault prejudgment, after an accident happens, the reason of the accident can be only manually checked and found, the workload of checking and maintenance is increased, and the risk of maintenance personnel can be increased under uncertain factors. Therefore, the multifunctional electricity utilization monitoring equipment is an effective means for online monitoring and preventing accidents of the type.
Disclosure of Invention
The invention provides a comprehensive monitoring device for electric equipment, which is used for realizing intelligent monitoring on a circuit where the electric equipment is located.
The invention provides a comprehensive monitoring device for electric equipment, which comprises a circuit monitoring device, wherein the circuit monitoring device is used for being installed on a circuit where the electric equipment is located, and the circuit monitoring device comprises:
the power supply module is used for supplying power;
the working information acquisition module is used for acquiring the working information of the circuit where the electric equipment comprehensive monitoring device is located;
the processing module is used for extracting the working information acquired by the working information acquisition module, analyzing and processing the working information and forming processed data;
the data display module is used for displaying the processed data;
the communication module is used for sending data to the outside;
the time synchronization module is used for automatically synchronizing time;
the operation process of the circuit monitoring device comprises the following steps:
s101, a working information acquisition module acquires working information of a circuit where the electric equipment comprehensive monitoring device is located and adds a timestamp;
s102, the processing module acquires and processes the working information to obtain processed data;
s103: the communication module sends the processed data to the outside, and the data display module displays the processed data.
Further, the working information acquisition module comprises one or more of a voltage acquisition module, a current acquisition module, a temperature acquisition module and a switching value acquisition module;
the voltage acquisition module is used for acquiring voltage change information of the circuit;
the current acquisition module is used for acquiring current change information in the circuit;
the temperature acquisition module is used for acquiring temperature change information of the circuit;
and the switching value acquisition module is used for acquiring the on-off signal change of the circuit.
Further, the communication module includes: one or more of an RS485 communication interface module, an RJ45 network communication interface module and a 4G network transmission module.
Furthermore, the comprehensive monitoring device for the electric equipment further comprises a monitoring system host, and the monitoring system host is in communication connection with the communication modules of the circuit monitoring devices.
Furthermore, the time synchronization module is used for acquiring the time of the monitoring system host and adjusting the time of the circuit monitoring device to be consistent with that of the monitoring system host.
Furthermore, the processing module comprises an A/D conversion module and a CPU, the A/D conversion module is used for extracting the working information acquired by the working information acquisition module, converting the information and then sending the converted information to the CPU, and the CPU analyzes and processes the working information.
Furthermore, the circuit monitoring device further comprises an upgrade dump module, wherein the upgrade dump module comprises an upgrade unit, and the upgrade unit is used for acquiring upgrade information and performing system upgrade on the circuit monitoring device.
Furthermore, the upgrade dump module further comprises an information export unit, and the information export unit is used for extracting and exporting the data information in the circuit monitoring device.
Further, the processed data includes a waveform map.
Compared with the prior art, the invention is formed by modularized splicing, has adjustable functions, is convenient to overhaul and replace, can effectively monitor the electric energy quality and various electric power parameters of an equipment loop, reduces the use cost of a user, improves the pre-judging capability of field faults, also provides powerful data support for the user to trace back the faults in the later period, and can reduce the construction cost and the maintenance cost in the later period by adopting a 4G module, thereby having stable data transmission, simple and convenient operation, control and use and high performance.
Drawings
Fig. 1 is a block diagram of the structure of the embodiment of the present invention.
1. A power supply module; 2. a voltage acquisition module; 3. a current collection module; 4. a temperature acquisition module; 5. a switching value acquisition module; 6. an A/D conversion module; 7. a CPU processor; 8. a data display module; 9. an upgrade and dump module; 10. an RS485 communication interface module; 11. an RJ45 network communication interface module; 12. a 4G network transmission module; 13. a time synchronization module; 14. and monitoring the system host.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
The embodiment of the invention discloses a comprehensive monitoring device for electric equipment, which comprises a circuit monitoring device as shown in figure 1, wherein the circuit monitoring device is used for being installed on a circuit where the electric equipment is located, and the circuit monitoring device comprises:
the power supply module is used for supplying power;
the working information acquisition module is used for acquiring the working information of the circuit where the electric equipment comprehensive monitoring device is located;
the processing module is used for extracting the working information acquired by the working information acquisition module, analyzing and processing the working information and forming processed data;
wherein the processed data comprises a waveform map;
the data display module is used for displaying the processed data;
the communication module is used for sending data to the outside;
the time synchronization module is used for automatically synchronizing time;
the operation process of the circuit monitoring device comprises the following steps:
s101, a working information acquisition module acquires working information of a circuit where the electric equipment comprehensive monitoring device is located and adds a timestamp;
s102, the processing module acquires and processes the working information to obtain processed data;
s103: the communication module sends the processed data to the outside, and the data display module displays the processed data.
Examples of the invention
Optionally, as shown in fig. 1, the working information collecting module includes a voltage collecting module, a current collecting module, a temperature collecting module, and a switching value collecting module;
the voltage acquisition module is used for acquiring voltage change information of the circuit;
the voltage acquisition module is mainly used for measuring the voltage value in a line, the voltage value below 380V can be directly acquired at a power supply end, and the voltage above 380V needs to be matched with a voltage transformer for sampling;
the current acquisition module is used for acquiring current change information in the circuit;
wherein, the current collecting module is mainly used for collecting the current value in the line, the maximum secondary bearing current of the current collecting module of the embodiment of the invention is designed to be 5A, the module is matched with the current transformer for use,
the temperature acquisition module is used for acquiring temperature change information of the circuit;
the temperature acquisition module is used for measuring a real-time temperature value of the position of the temperature probe;
and the switching value acquisition module is used for acquiring the on-off signal change of the circuit.
The switching value collector module in the embodiment of the invention designs three connecting terminals at this time, wherein one of the three connecting terminals is active, the other one of the three connecting terminals is passive, and three different switching values are collected, so that the I/O state of the switch can be reflected;
according to the embodiment of the invention, the voltage acquisition module, the current acquisition module, the temperature acquisition module and the switching value acquisition module are adopted, so that the circuit information can be effectively detected, and the working condition of the power utilization circuit can be obtained.
Optionally, as shown in fig. 1, the communication module includes: an RS485 communication interface module, an RJ45 network communication interface module and a 4G network transmission module.
Optionally, as shown in fig. 1, the electrical equipment comprehensive monitoring device further includes a monitoring system host, and the monitoring system host is in communication connection with the communication modules of the plurality of circuit monitoring devices.
The embodiment of the invention is provided with the 4G network transmission module, can realize self-organizing network, reduces the workload of construction wiring, and directly transmits data to a monitoring system host or pushes messages to a mobile phone of a manager in a wireless network mode. All data can be uploaded to a monitoring system host through a reserved RS485 communication interface module and a reserved RJ45 communication module.
In particular, the time synchronization module is used for acquiring the time of the monitoring system host and adjusting the time of the circuit monitoring device to be consistent with that of the monitoring system host.
In the operation process, the time synchronization module can automatically synchronize with the monitoring system host, and the consistency of data and time is ensured, so that the accuracy and traceability of the timestamp are ensured.
Optionally, as shown in fig. 1, the processing module includes an a/D conversion module and a CPU processor, where the a/D conversion module is configured to extract the working information acquired by the working information acquisition module, convert the information, and send the converted information to the CPU processor, and the CPU processor analyzes and processes the working information.
When the CPU processor is out of limit or suddenly changed, the CPU processor can carry out prejudgment and event comparison and record current information, and effective data support is provided for users and managers when the users and the managers handle faults. The A/D conversion module can convert the collected voltage and current and the switching value and transmit the converted voltage and current and the switching value to the CPU processor, and parameters such as voltage, current, electric degree, frequency, curve oscillogram, harmonic rate and the like can be completely displayed through the data display module after processing.
Optionally, as shown in fig. 1, the circuit monitoring apparatus further includes an upgrade dump module, where the upgrade dump module includes an upgrade unit, and the upgrade unit is configured to obtain upgrade information and perform system upgrade on the circuit monitoring apparatus.
In particular, the upgrade dump module further comprises an information export unit, and the information export unit is used for extracting and exporting data information in the circuit monitoring device.
When the product program needs to be upgraded or some files need to be downloaded, the rapid operation can be carried out through the reserved upgrading and dumping module.
The embodiment of the invention can be used in cooperation with a power distribution cabinet and a power distribution box, one device can be installed in a power utilization loop under the power distribution cabinet and the power distribution box, the device supports various communication protocol protocols, an own RS485 communication module can be selected for networking communication, a 4G network transmission module can also be used for self-networking communication, all data can be uploaded to a monitoring system host, and the time synchronization module can automatically calibrate the time with a computer while sending and receiving the data, so that the time consistency of the two parties is ensured. Meanwhile, the electricity utilization monitoring equipment provided by the embodiment of the invention can detect parameters such as three-phase voltage, three-phase current, power, frequency, temperature, switching state and electric energy demand, and monitor the electric energy quality: voltage deviation rate, flicker, frequency deviation, harmonic detection, fundamental detection, transient capture, event recording and the like; judging the abnormality, the phase loss and the overload of the voltage and the current according to the detected signals, recording the abnormality, the phase loss and the overload of the voltage and the current into a CPU, converting the abnormality, the phase loss and the overload into a curve oscillogram and an event alarm SOE record for multiple times, and outputting a control signal to control the opening of a breaker; two RS485 communication interfaces and one network communication interface are configured, various acquired data and information can be quickly transmitted to the data acquisition module, the data acquisition module uploads the data to the monitoring system in an RS485, Ethernet or wireless network mode, and the monitoring system sends alarm information to inform operators on duty to process faults under abnormal conditions; in addition, a 4G transmission interface is configured, so that the direct association of the equipment body with the network can be realized, signals can be wirelessly transmitted, and when an accident occurs, information can be timely pushed to management personnel so as to take effective measures to reduce loss, early discovery, early warning, early judgment and traceability are realized, and a strong and powerful guarantee is provided for realizing power network intelligentization.
Finally, it should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the modifications and equivalents of the specific embodiments of the present invention can be made by those skilled in the art after reading the present specification, but these modifications and variations do not depart from the scope of the claims of the present application.
Claims (9)
1. Monitoring devices is synthesized to consumer, its characterized in that, consumer synthesizes monitoring devices and includes circuit monitoring devices, circuit monitoring devices is used for installing on consumer place circuit, circuit monitoring devices includes:
the power supply module is used for supplying power;
the working information acquisition module is used for acquiring the working information of the circuit where the electric equipment comprehensive monitoring device is located;
the processing module is used for extracting the working information acquired by the working information acquisition module, analyzing and processing the working information and forming processed data;
the data display module is used for displaying the processed data;
the communication module is used for sending data to the outside;
the time synchronization module is used for automatically synchronizing time;
the operation process of the circuit monitoring device comprises the following steps:
s101, a working information acquisition module acquires working information of a circuit where the electric equipment comprehensive monitoring device is located and adds a timestamp;
s102, the processing module acquires and processes the working information to obtain processed data;
s103: the communication module sends the processed data to the outside, and the data display module displays the processed data.
2. The comprehensive monitoring device for the electric equipment according to claim 1, wherein the working information acquisition module comprises one or more of a voltage acquisition module, a current acquisition module, a temperature acquisition module and a switching value acquisition module;
the voltage acquisition module is used for acquiring voltage change information of the circuit;
the current acquisition module is used for acquiring current change information in the circuit;
the temperature acquisition module is used for acquiring temperature change information of the circuit;
and the switching value acquisition module is used for acquiring the on-off signal change of the circuit.
3. The integrated monitoring device for electric equipment according to claim 1, wherein the communication module comprises: one or more of an RS485 communication interface module, an RJ45 network communication interface module and a 4G network transmission module.
4. The integrated monitoring device for electric equipment according to claim 1, further comprising a monitoring system host, wherein the monitoring system host is communicatively connected to the communication modules of the plurality of circuit monitoring devices.
5. The electrical equipment comprehensive monitoring device according to claim 4, wherein the time synchronization module is configured to obtain a time of the monitoring system host, and adjust the time of the circuit monitoring device to be consistent with the time of the monitoring system host.
6. The comprehensive monitoring device for the electric equipment according to claim 1, wherein the processing module comprises an A/D conversion module and a CPU processor, the A/D conversion module is used for extracting the working information acquired by the working information acquisition module, converting the information and then sending the converted information to the CPU processor, and the CPU processor analyzes and processes the working information.
7. The electrical equipment integrated monitoring device according to claim 1, wherein the circuit monitoring device further comprises an upgrade dump module, the upgrade dump module comprises an upgrade unit, and the upgrade unit is configured to obtain upgrade information and perform system upgrade on the circuit monitoring device.
8. The integrated monitoring device for electric equipment according to claim 7, wherein the upgrade dump module further comprises an information export unit, and the information export unit is configured to extract and export data information in the circuit monitoring device.
9. The integrated monitoring device for electric equipment according to claim 1, wherein the processed data comprises a waveform diagram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465519.7A CN113311257A (en) | 2021-04-28 | 2021-04-28 | Comprehensive monitoring device for electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465519.7A CN113311257A (en) | 2021-04-28 | 2021-04-28 | Comprehensive monitoring device for electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113311257A true CN113311257A (en) | 2021-08-27 |
Family
ID=77371125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110465519.7A Pending CN113311257A (en) | 2021-04-28 | 2021-04-28 | Comprehensive monitoring device for electric equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113311257A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010048375A1 (en) * | 2000-05-23 | 2001-12-06 | Kabushiki Kaisha Toshiba | Apparatus monitoring system and apparatus monitoring method |
| CN201270432Y (en) * | 2008-08-21 | 2009-07-08 | 杭州大有科技发展有限公司 | Synthetic electricity distribution box apparatus |
| CN202256441U (en) * | 2011-08-15 | 2012-05-30 | 南通林洋电气有限公司 | Novel comprehensive electric power monitor |
| CN102928716A (en) * | 2012-11-06 | 2013-02-13 | 江苏正佰电气股份有限公司 | Intelligent power quality monitoring system |
| CN107121645A (en) * | 2017-03-23 | 2017-09-01 | 国家电网公司 | A kind of high-tension switch gear and electrical power monitoring device |
| CN207069689U (en) * | 2017-06-20 | 2018-03-02 | 郑州林高电气有限公司 | Multifunctional electric meter |
| CN207114664U (en) * | 2017-08-31 | 2018-03-16 | 国网辽宁省电力有限公司 | A kind of electric energy quality monitoring system |
| CN110398648A (en) * | 2019-07-09 | 2019-11-01 | 成都府河电力自动化成套设备有限责任公司 | A kind of substation's composite monitoring device |
| CN110672971A (en) * | 2019-07-04 | 2020-01-10 | 广州供电局有限公司 | Built-in fault recording device of power distribution terminal |
| CN110672962A (en) * | 2019-10-22 | 2020-01-10 | 东莞市鸿茂物联网科技有限公司 | State monitoring system for electric equipment |
| CN110958327A (en) * | 2019-12-16 | 2020-04-03 | 国网湖北省电力有限公司电力科学研究院 | Intelligent substation remote testing system and method |
| CN111355300A (en) * | 2020-02-26 | 2020-06-30 | 国网上海市电力公司 | NB-IoT box-type substation state online monitoring device |
| CN211018405U (en) * | 2019-12-05 | 2020-07-14 | 广东电网有限责任公司 | Ring main unit monitoring device |
| CN212435433U (en) * | 2020-04-16 | 2021-01-29 | 武汉光谷电气有限公司 | Intelligent electricity utilization monitoring device |
| CN112701791A (en) * | 2020-12-30 | 2021-04-23 | 江苏镇安电力设备有限公司 | Data online monitoring system of intelligent power distribution cabinet |
-
2021
- 2021-04-28 CN CN202110465519.7A patent/CN113311257A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010048375A1 (en) * | 2000-05-23 | 2001-12-06 | Kabushiki Kaisha Toshiba | Apparatus monitoring system and apparatus monitoring method |
| CN201270432Y (en) * | 2008-08-21 | 2009-07-08 | 杭州大有科技发展有限公司 | Synthetic electricity distribution box apparatus |
| CN202256441U (en) * | 2011-08-15 | 2012-05-30 | 南通林洋电气有限公司 | Novel comprehensive electric power monitor |
| CN102928716A (en) * | 2012-11-06 | 2013-02-13 | 江苏正佰电气股份有限公司 | Intelligent power quality monitoring system |
| CN107121645A (en) * | 2017-03-23 | 2017-09-01 | 国家电网公司 | A kind of high-tension switch gear and electrical power monitoring device |
| CN207069689U (en) * | 2017-06-20 | 2018-03-02 | 郑州林高电气有限公司 | Multifunctional electric meter |
| CN207114664U (en) * | 2017-08-31 | 2018-03-16 | 国网辽宁省电力有限公司 | A kind of electric energy quality monitoring system |
| CN110672971A (en) * | 2019-07-04 | 2020-01-10 | 广州供电局有限公司 | Built-in fault recording device of power distribution terminal |
| CN110398648A (en) * | 2019-07-09 | 2019-11-01 | 成都府河电力自动化成套设备有限责任公司 | A kind of substation's composite monitoring device |
| CN110672962A (en) * | 2019-10-22 | 2020-01-10 | 东莞市鸿茂物联网科技有限公司 | State monitoring system for electric equipment |
| CN211018405U (en) * | 2019-12-05 | 2020-07-14 | 广东电网有限责任公司 | Ring main unit monitoring device |
| CN110958327A (en) * | 2019-12-16 | 2020-04-03 | 国网湖北省电力有限公司电力科学研究院 | Intelligent substation remote testing system and method |
| CN111355300A (en) * | 2020-02-26 | 2020-06-30 | 国网上海市电力公司 | NB-IoT box-type substation state online monitoring device |
| CN212435433U (en) * | 2020-04-16 | 2021-01-29 | 武汉光谷电气有限公司 | Intelligent electricity utilization monitoring device |
| CN112701791A (en) * | 2020-12-30 | 2021-04-23 | 江苏镇安电力设备有限公司 | Data online monitoring system of intelligent power distribution cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104597398A (en) | Intelligent pluggable circuit breaker and monitoring and pre-warning system thereof | |
| CN103840552B (en) | Power distribution room monitoring method and system | |
| CN103674292A (en) | Temperature detecting method and apparatus for devices of transformer station | |
| CN108233531A (en) | A kind of packaged type low-voltage electric energy mass monitoring system and method | |
| CN208984136U (en) | Substation parameters acquisition device and system | |
| CN201541098U (en) | Intelligent energy consumption monitoring and measuring single-phase distribution box | |
| CN110658451A (en) | Transformer area low-voltage switch tripping monitoring system and method thereof | |
| CN102116811B (en) | Harmonic source judgment method in double bus transmission and electric energy quality monitoring system | |
| CN211429330U (en) | Voltage monitoring device with fault self-diagnosis function based on NB-lot technology | |
| CN113311257A (en) | Comprehensive monitoring device for electric equipment | |
| CN110995155A (en) | Photovoltaic module real-time monitoring system | |
| CN203929246U (en) | Substation equipment temperature-detecting device | |
| CN206819531U (en) | A kind of cloud electricity takes data acquisition device | |
| CN114172266A (en) | Universal intelligent component cabinet for power transformation equipment and multi-state quantity monitoring method for power transformation equipment | |
| CN109613354A (en) | A kind of power quality wireless monitor system and its monitoring method | |
| CN110086261B (en) | Industrial feeder line distribution terminal | |
| CN101750985A (en) | Remote temperature sensing and monitoring system and method for 0.4kV low voltage switch | |
| CN210863905U (en) | Outdoor intelligent low-voltage fault diagnosis device | |
| CN112071684A (en) | Disconnecting link switch state monitoring system | |
| CN109193926B (en) | Transformer substation monitoring system | |
| CN212627965U (en) | Intelligent storage battery monitoring terminal based on webpage server function | |
| CN220473871U (en) | Wisdom power consumption data acquisition device | |
| CN212989468U (en) | Current transformer with communication function | |
| CN220207754U (en) | Electric wire netting equipment overhauls handheld machine | |
| CN217639981U (en) | Power distribution room power platform monitoring 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210827 |
|
| RJ01 | Rejection of invention patent application after publication |