CN114019289A - Intelligent warehouse dispatching system of distribution automation terminal - Google Patents
Intelligent warehouse dispatching system of distribution automation terminal Download PDFInfo
- Publication number
- CN114019289A CN114019289A CN202111336100.8A CN202111336100A CN114019289A CN 114019289 A CN114019289 A CN 114019289A CN 202111336100 A CN202111336100 A CN 202111336100A CN 114019289 A CN114019289 A CN 114019289A
- Authority
- CN
- China
- Prior art keywords
- warehouse
- module
- terminal
- debugging
- main station
- 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
- 238000009826 distribution Methods 0.000 title claims abstract description 41
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000003745 diagnosis Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000008569 process Effects 0.000 claims abstract description 23
- 230000007547 defect Effects 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 20
- 238000004458 analytical method Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 7
- 230000011664 signaling Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 6
- 238000007726 management method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses an intelligent warehouse dispatching system of a distribution automation terminal, which comprises a distribution network automation main station part and a warehouse part, wherein the distribution network automation main station part comprises a distribution network automation main station front part and a main station server, the main station server is arranged in a main station machine room and is used for receiving a diagnosis result sent by the warehouse terminal, counting and analyzing the diagnosis result and finding out the familial defects of the terminal in time; closed-loop management in the testing process can be realized, human intervention factors in the testing process are reduced, personnel investment in the testing process is reduced, and authenticity and reliability of a testing result are improved; the test data and the test result can be transmitted to the background software for unified storage and management, and the traceability of the test data is ensured.
Description
Technical Field
The invention relates to the technical field of automation, in particular to an intelligent warehousing and dispatching system of a distribution automation terminal.
Background
In the process of large-scale development of distribution network automation construction, the on-column automation switch is subjected to large-scale construction, and the large investment of the distribution automation terminal is also implied. Reliable operation of distribution automation systems is an important basis for the health development of distribution networks. In order to ensure the operation quality of the distribution automation terminal, the debugging of the warehouse of the distribution automation terminal before network access is a very important work in the automatic construction or transformation process of the distribution network.
As shown in fig. 1, in the conventional warehouse adjustment method, a relay protection tester is used to perform analog addition on a tested terminal, and then a tester needs to communicate with a master station through contact ways such as a telephone and mutually check whether the uploading point position is correct. If the telemetry current is detected, the detection steps are as follows: 1) normally powering on the terminal; 2) linking a terminal secondary current terminal by using a relay protection instrument; 3) a relay protection instrument is used for adding a current source to a terminal to telemeter a loop; 4) reading the telemetering data of the terminal by using a computer, wherein the data deviation is +/-0.5%; 5) checking with a master station, judging whether the uploading point position of the telemetering current data is correct, judging whether the data display is consistent with a relay protection instrument and a computer, and judging whether the data display is consistent with the relay protection instrument and the computer, wherein the data display comprises the following steps: plus or minus 0.5 percent.
In the traditional warehouse adjustment method, each test item needs to operate the relay protection instrument or the terminal, and data and point location check is carried out between the relay protection instrument or the terminal and the main station. The testing process needs to be matched by multiple persons and multiple posts, so that the testing time is long, the testing efficiency is low, meanwhile, the testing is a non-closed loop testing, the manual intervention is excessive, and the factors that the testing quality is influenced by the responsibility of testing personnel exist.
Disclosure of Invention
The invention aims to provide an intelligent warehouse dispatching system of a distribution automation terminal, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a distribution automation terminal intelligent warehouse debugging system comprises a distribution automation master station part and a warehouse part, wherein the distribution automation master station part comprises a distribution automation master station preposition and a master station server, the master station server is deployed in a master station machine room and used for receiving a diagnosis result sent by the warehouse server, counting and analyzing the diagnosis result and finding out familial defects of the terminal in time, the master station server establishes an interface with a debugging process of a power supply office distribution automation master station operation management system, and each warehouse debugging result is added to the debugging process to serve as a key judgment basis for judging whether the debugging is qualified or not;
the warehouse part comprises an encryption module, a communication interface module, an encryption sending module, a warehouse debugging diagnosis module, a tested equipment communication unit, a standard source tester and a tested equipment protection measurement and control unit;
the encryption sending module is responsible for sending the diagnosis result issued by the warehouse debugging diagnosis module to a network distribution main station side server through a wireless public network to receive a program;
the communication interface module is connected between the communication unit of the tested equipment and the encryption module and can monitor protocol communication information between the communication unit of the tested equipment and the master station;
the warehouse debugging diagnosis module is responsible for controlling the coordination work of the communication interface module, the standard source tester and the encryption sending module, automatically controlling the test process, diagnosing the acquired message information and sending the diagnosis result to the master station server;
the standard source tester is interconnected with the tested equipment protection measurement and control unit, is controlled by the warehouse debugging diagnosis module, automatically adds voltage and current to the tested protection unit, realizes automatic detection of functions and performance indexes of the tested terminal, makes accuracy judgment, simulates protection faults, and detects whether the alarm of the terminal occurs and is normal or not and whether the alarm accords with the set condition or not.
As a still further scheme of the invention: the warehouse debugging diagnosis module can automatically detect the tested terminal item by item according to the signal point table of the uploading main station and can record the detection process.
As a still further scheme of the invention: the test content comprises protection action correctness, remote signaling uploading timeliness, remote signaling uploading correctness and remote sensing uploading accuracy.
As a still further scheme of the invention: the warehouse debugging diagnosis module can locate the fault reason for the items which do not pass the detection through intelligent analysis.
As a still further scheme of the invention: the warehouse debugging diagnosis module can automatically generate a test analysis report after the detection of each terminal is finished, the content of the test analysis report comprises a test problem briefing, and the problems found in the test are intensively displayed and provided with a message evidence.
As a still further scheme of the invention: the communication interface module is also connected with the front end of the distribution network automation main station through the encryption module.
As a still further scheme of the invention: the communication interface module can controllably realize the switching of a monitoring mode and a simulation master station mode.
Compared with the prior art, the invention has the beneficial effects that:
(1) the automatic test is realized, the automation level and the operability level of production units in the processes of delivery sampling inspection and field test testing can be improved, and the working efficiency of the testing process is improved;
(2) the closed-loop management of the test process is realized, the human intervention factors of the test process are reduced, the personnel investment of the test process is reduced, and the authenticity and reliability of the test result are improved;
(3) the test data and the test result are transmitted to the background software for unified storage and management, so that the traceability of the test data is ensured.
Drawings
Fig. 1 is a schematic diagram of the prior art.
FIG. 2 is a system diagram of the present invention.
Fig. 3 is a circuit diagram of a power supply module of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1: referring to fig. 2, a distribution automation terminal intelligent warehouse debugging system comprises a distribution network automation master station part and a warehouse part, wherein the distribution network automation master station part comprises a distribution network automation master station front end and a master station server, the master station server is arranged in a master station machine room and used for receiving a diagnosis result sent by the warehouse server, counting and analyzing the diagnosis result and finding out familial defects of the terminal in time, the master station server simultaneously establishes an interface with a debugging process of a distribution network automation master station operation management system of a power supply bureau, and each warehouse debugging result is added to the debugging process to serve as a key judgment basis for judging whether the debugging is qualified or not;
the warehouse part comprises an encryption module, a communication interface module, an encryption sending module, a warehouse debugging diagnosis module, a tested equipment communication unit, a standard source tester and a tested equipment protection measurement and control unit;
the encryption sending module is responsible for sending the diagnosis result issued by the warehouse debugging diagnosis module to a network distribution main station side server through a wireless public network to receive a program;
the communication interface module is connected between the communication unit of the tested device and the encryption module, can monitor protocol communication information between the communication unit of the tested device and the master station, and can controllably realize switching of a monitoring mode and a simulation master station mode.
The warehouse debugging diagnosis module is a core unit of the method and is responsible for controlling the coordination work of the communication interface module, the standard source tester and the encryption sending module, automatically controlling the test process, diagnosing the acquired message information and sending the diagnosis result to the master station server.
The warehouse debugging diagnosis module can automatically detect the tested terminal item by item according to the signal point table of the uploading main station, can record the detection process, and test contents comprise protection action correctness, remote signaling uploading timeliness, remote signaling uploading correctness, remote sensing uploading accuracy and the like.
The warehouse debugging diagnosis module can locate the fault reason for the items which do not pass the detection through intelligent analysis.
The warehouse debugging diagnosis module can automatically generate a test analysis report after the detection of each detected terminal is finished, the content of the test analysis report comprises a test problem briefing, and the problems found by the test are intensively displayed and provided with a message assistant certificate;
the standard source tester is interconnected with the tested equipment protection measurement and control unit, is controlled by the warehouse debugging diagnosis module, automatically adds voltage and current to the tested protection unit, realizes automatic detection of functions and performance indexes of the tested terminal, makes accuracy judgment, simulates protection faults, and detects whether the alarm of the terminal occurs and is normal or not and whether the alarm accords with the set condition or not.
Example 2, specific examples compare as follows:
(1) traditional open-loop storehouse transfers detection procedure:
1) the operator in the warehouse calls the master station worker to inform that remote measurement can be started;
2) operating master station system software by a worker of a master station, opening a protocol message communication page corresponding to the tested terminal equipment, finding out remote sensing corresponding point position data, and informing warehouse personnel after a telephone is prepared;
3) the warehouse personnel operate the relay protection tester, manually input voltage configuration parameters, click to start adding quantity to output 220V voltage, and inform the main station personnel of the added quantity by telephone;
4) and checking the primary voltage value 10.8530kV and the secondary voltage 238.766V of the data of the remote measuring points corresponding to the voltage by a worker at the main station, manually judging the result of the data, failing to meet the requirement of the precision range of +/-0.5% of 220V output by the tester, failing to judge the result, and informing a warehouse worker of the detection result of the item by a telephone to finish the detection.
In the traditional switch warehouse debugging detection process, warehouse personnel and master station personnel need to communicate with each other by telephone continuously, and check and detect step by step.
(2) The detection flow of the design is as follows:
1) operating a tester by an operator in the warehouse to select a remote measuring voltage item in a standard test scheme, and clicking to start testing;
2) the tester automatically adds and outputs 220V voltage, and the tested terminal automatically sends a telemetering message to the master station;
3) the warehouse debugging diagnosis module automatically captures message data between a tested terminal and a main station, automatically screens required telemetering data (a yellow mark field) from the message data (the following message data example), obtains a primary voltage value of 10.8530kV of a main station sent to the terminal through automatic conversion and analysis, obtains a secondary voltage value of 238.766V through 10000/220 transformation ratio conversion, does not meet the requirement of +/-0.5% precision range of 220V output by a tester, judges the result to be unqualified, finishes the detection, and sends the result to the main station.
In the closed-loop storehouse adjustment detection process, the warehouse personnel finish the detection independently without the participation of the master station personnel.
Example of telemetry message data in protocol communication:
short floating point telemetry:
Recv :
68 55 55 68 73 1A 14 0D 8F 14 1A 14 01 40 E3 A5 2D 41 00 23 DB 2D 41 00 E1 FA CE 42 00 CD CC AC 42 00 9A 99 A5 42 00 33 33 A3 42 00 00 00 00 00 00 8F C2 F5 3D 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7B 14 48 42 00 AA 05 BE 44 00 9A 19 B9 43 00 FE D4 78 3F 00 7E 16；
RTU-Master station;
and (3) frame analysis:
variable frame length frame-68, start station, FCB =1, FCV =1, address =26, sends the user data to be acknowledged;
type identification-13, reason code-20, public address code-5146, information body number-15;
short floating-point number (sequence number, value, quality code) ] -sequential transfer-
(0,10.8530,00)(1,10.8660,00)(2,103.4900,00)(3,86.4000,00)(4,82.8000,00)(5,81.6000,00)(6,0.0000,00)(7,0.1200,00)(8,0.0000,00)(9,0.0000,00)(10,0.0000,00)(11,50.0200,00)(12,1520.1770,00)(13,370.2000,00)(14,0.9720,00)。
Embodiment 3, on the basis of embodiment 1, further includes a power supply portion, the power supply portion is composed of a commercial power supply and a battery, as shown in fig. 3, and includes a resistor R1, a capacitor C1, a rectifier T, a capacitor C1, a battery E1, and a regulator IC1, one end of the resistor R1 is connected with ac power of capacitors C1 and 220V, the other end of the resistor R1 is connected with the other end of capacitor C92 and port 1 of the rectifier T, port 2 of the rectifier T is connected with a resistor R2 and a capacitor C1, the other end of the resistor R2 is connected with a positive electrode of the battery E1 and port 1 of the regulator IC 3684, port 2 of the regulator IC1 is connected with a negative electrode of the battery E1, the other end of the capacitor C1 and port 4 of the rectifier T, port 3 of the regulator IC1 outputs a stable dc power VCC, model of the regulator IC1 is LM7812, 220V, after voltage reduction and rectification, a part charges the battery E1, and another part outputs a stable dc power through the regulator IC 24, when power failure occurs, the voltage in the battery E1 is output and supplied by the voltage regulator IC1, and the uninterrupted operation is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a distribution automation terminal intelligence storehouse transfers system, includes distribution network automation master station part and warehouse part, its characterized in that: the distribution network automation main station part comprises a distribution network automation main station front end and a main station server end;
the main station server is deployed in a main station machine room and used for receiving the diagnosis result sent by the warehouse terminal, counting and analyzing the diagnosis result and finding out the familial defects of the terminal in time, and simultaneously establishes an interface with a debugging flow of the power supply bureau distribution network automatic main station operation management system, and adds the bin debugging result of each time in the debugging flow to serve as a key judgment basis for judging whether the debugging is qualified or not;
the warehouse part comprises an encryption module, a communication interface module, an encryption transmitting module, a warehouse debugging diagnostic module, a tested equipment communication unit, a standard source tester and a tested equipment protection measurement and control unit,
the encryption sending module is responsible for sending the diagnosis result issued by the warehouse debugging diagnosis module to a network distribution main station side server through a wireless public network to receive a program;
the communication interface module is connected between the communication unit of the tested equipment and the encryption module and monitors protocol communication information between the communication unit of the tested equipment and the master station;
the warehouse debugging diagnosis module is responsible for controlling the coordination work of the communication interface module, the standard source tester and the encryption sending module, automatically controlling the test process, diagnosing the acquired message information and sending the diagnosis result to the master station server;
the standard source tester is interconnected with the tested equipment protection measurement and control unit, is controlled by the warehouse debugging diagnosis module, automatically adds voltage and current to the tested protection unit, realizes automatic detection of functions and performance indexes of the tested terminal, makes accuracy judgment, simulates protection faults, and detects whether the alarm of the terminal occurs and is normal or not and whether the alarm accords with the set condition or not.
2. The intelligent warehouse debugging system of the power distribution automation terminal of claim 1, wherein the warehouse debugging diagnosis module automatically detects the tested terminal item by item according to the signal point table sent to the master station, and can record the detection process.
3. The power distribution automation terminal intelligent warehousing system of claim 2 wherein the content being tested includes protection action correctness, remote signaling upload timeliness, remote signaling upload correctness, telemetry upload accuracy.
4. The power distribution automation terminal intelligent warehouse system of claim 3 wherein the warehouse diagnostic module locates the cause of the failure by intelligent analysis of the items that fail detection.
5. The power distribution automation terminal intelligent warehousing system of claim 4, wherein the warehousing diagnostic module automatically generates test analysis reports after each terminal is tested, the test analysis report content includes test problem bulletins, and the problems found in the tests are collectively displayed and provided with message evidences.
6. The power distribution automation terminal intelligent warehousing system of claim 4, wherein the communication interface module is further connected with a distribution network automation master station front-end through an encryption module.
7. The power distribution automation terminal intelligent warehouse debugging system of claim 4, wherein the communication interface module is capable of controllably realizing switching between a monitoring mode and a simulation master station mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336100.8A CN114019289A (en) | 2021-11-12 | 2021-11-12 | Intelligent warehouse dispatching system of distribution automation terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336100.8A CN114019289A (en) | 2021-11-12 | 2021-11-12 | Intelligent warehouse dispatching system of distribution automation terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114019289A true CN114019289A (en) | 2022-02-08 |
Family
ID=80063558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111336100.8A Pending CN114019289A (en) | 2021-11-12 | 2021-11-12 | Intelligent warehouse dispatching system of distribution automation terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114019289A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160309352A1 (en) * | 2013-11-04 | 2016-10-20 | State Grid Corporation Of China | Intelligent power utilization communication product detecting system |
| CN106444709A (en) * | 2016-10-13 | 2017-02-22 | 珠海许继电气有限公司 | Automatic testing method and device of distribution intelligent function of power distribution terminal |
| CN109444582A (en) * | 2018-11-08 | 2019-03-08 | 积成电子股份有限公司 | The automatic adjustment method in distribution terminal side based on live mobile terminal and simulation main website |
| CN110927482A (en) * | 2019-11-08 | 2020-03-27 | 广州思泰信息技术有限公司 | Automatic hybrid test system and method for distribution automation feeder terminal equipment |
| CN111934434A (en) * | 2020-09-01 | 2020-11-13 | 国网江苏省电力有限公司电力科学研究院 | Power distribution automation operation analysis and evaluation system and method |
| CN112379197A (en) * | 2020-11-03 | 2021-02-19 | 广东电网有限责任公司佛山供电局 | Automatic debugging and detecting system and method for power distribution terminal |
| CN112557789A (en) * | 2020-11-30 | 2021-03-26 | 广东电网有限责任公司 | Self-adaptive distributed intelligent test system for distribution automation terminal |
-
2021
- 2021-11-12 CN CN202111336100.8A patent/CN114019289A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160309352A1 (en) * | 2013-11-04 | 2016-10-20 | State Grid Corporation Of China | Intelligent power utilization communication product detecting system |
| CN106444709A (en) * | 2016-10-13 | 2017-02-22 | 珠海许继电气有限公司 | Automatic testing method and device of distribution intelligent function of power distribution terminal |
| CN109444582A (en) * | 2018-11-08 | 2019-03-08 | 积成电子股份有限公司 | The automatic adjustment method in distribution terminal side based on live mobile terminal and simulation main website |
| CN110927482A (en) * | 2019-11-08 | 2020-03-27 | 广州思泰信息技术有限公司 | Automatic hybrid test system and method for distribution automation feeder terminal equipment |
| CN111934434A (en) * | 2020-09-01 | 2020-11-13 | 国网江苏省电力有限公司电力科学研究院 | Power distribution automation operation analysis and evaluation system and method |
| CN112379197A (en) * | 2020-11-03 | 2021-02-19 | 广东电网有限责任公司佛山供电局 | Automatic debugging and detecting system and method for power distribution terminal |
| CN112557789A (en) * | 2020-11-30 | 2021-03-26 | 广东电网有限责任公司 | Self-adaptive distributed intelligent test system for distribution automation terminal |
Non-Patent Citations (1)
| Title |
|---|
| 欧世锋等: "配电终端自动化测试系统的设计与实现", 《广西电力》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105203980B (en) | A kind of power quality self-checking system and its self checking method | |
| CN108769901B (en) | Laboratory equipment management system and method based on UWB technology | |
| CN202267721U (en) | Lightning arrester online monitoring device having GPRS module | |
| CN102129061A (en) | Automatic wiring detection device and method for three-phase simulation electric energy meter | |
| CN109212378A (en) | Middle and low voltage network Fault Locating Method | |
| CN114721352B (en) | State monitoring and fault diagnosis method and system of DCS (distributed control system) | |
| CN107843765A (en) | A kind of voltage monitoring instrument and its raising data report examination promptness rate percentage of head rice method | |
| CN203630318U (en) | Test system for power system switching power supply module | |
| CN113155222A (en) | NB-IoT intelligent water meter data acquisition terminal and sensor fault detection method thereof | |
| CN211148838U (en) | Air conditioner internal unit testing device | |
| CN114019289A (en) | Intelligent warehouse dispatching system of distribution automation terminal | |
| CN208984742U (en) | A kind of full production cycle automatic test device of distribution terminal | |
| CN204883855U (en) | Voltage regulator pressure automatic recording analysis appearance | |
| CN109633507A (en) | Voltage monitoring instrument with self-diagnostic function | |
| CN212845645U (en) | Charging pile electric energy data real-time acquisition and uploading system | |
| CN112858778A (en) | Information flow monitoring system of metering and collecting equipment | |
| CN115587635A (en) | Transformer area line loss analysis method and system based on neutral point deviation judgment | |
| CN108680870A (en) | A kind of removable automation calibration system and method for forming and capacity dividing test power supply | |
| CN213149201U (en) | Double-circuit power supply real-time monitoring device | |
| CN211457129U (en) | Portable electric power communication channel test terminal | |
| CN210802757U (en) | Medical gas informatization early warning platform | |
| CN210899204U (en) | Intelligent detection device for centralized meter reading communication faults | |
| WO2020038158A1 (en) | Intelligent electroscope capable of performing remote data interaction in real time | |
| CN207586327U (en) | High-voltage parallel capacitor on-line monitoring system | |
| CN112462164A (en) | Intelligent test system of well low-voltage plate cabinet |
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: 20220208 |
|
| RJ01 | Rejection of invention patent application after publication |