CN210982601U - Direct current concentrator based on time synchronization measurement - Google Patents
Direct current concentrator based on time synchronization measurement Download PDFInfo
- Publication number
- CN210982601U CN210982601U CN201921365761.1U CN201921365761U CN210982601U CN 210982601 U CN210982601 U CN 210982601U CN 201921365761 U CN201921365761 U CN 201921365761U CN 210982601 U CN210982601 U CN 210982601U
- Authority
- CN
- China
- Prior art keywords
- module
- direct current
- electric energy
- synchronous
- electric
- 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.)
- Active
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 44
- 230000006854 communication Effects 0.000 claims abstract description 65
- 238000004891 communication Methods 0.000 claims abstract description 63
- 230000001360 synchronised effect Effects 0.000 claims abstract description 60
- 238000005070 sampling Methods 0.000 claims abstract description 46
- 238000012545 processing Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 7
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model provides a direct current concentrator based on time synchronization measurement, including synchronous measurement module, management module, serial peripheral hardware interface, binding post, power supply and shell, synchronous measurement module includes multichannel DC voltage, the synchronous sampling module of electric current high accuracy, big dipper GPS synchronous clock module, electric energy calculation module, measurement processing module, memory 1, real-time clock module, clock battery, super capacitor, the management module includes management processing module, communication module, memory 2, display, embedded safety control module, input/output interface, pulse output interface, the utility model discloses a multichannel DC voltage, the synchronous sampling module of electric current high accuracy have higher voltage, current measurement precision and electric energy meter crowd detection function; the Beidou/GPS synchronous clock module is adopted to provide high-precision synchronous clock signals for voltage and current signal acquisition, and the electric energy metering device has higher electric energy metering accuracy and thinner electric quantity resolution.
Description
Technical Field
The utility model relates to an electric power system electric energy measurement technical field specifically is a direct current concentrator based on time synchronization measurement.
Background
The concentrator is mainly a central management device and a control device of a remote centralized meter reading system and is responsible for regularly reading terminal data, command transmission of the system, data communication, network management, event recording, transverse transmission of data and other functions. In the power system, the concentrator is an important component of the electricity consumption information acquisition system, and is used for collecting data of each collector or electric energy meter of a low-voltage user, processing and storing the data, and exchanging the data with a master station or handheld equipment. The concentrator can be divided into an alternating current concentrator and a direct current concentrator according to the difference of alternating current and direct current of a power grid system. Because the current low-voltage direct current distribution network is less, the direct current concentrator is less.
The current direct current supply network mainly is a charging station direct current charging network and the like, charging information of a direct current electric energy meter in a charging station direct current charging facility is collected and uploaded through a distribution transformer side acquisition terminal, the state of the direct current electric energy meter cannot be monitored in real time, and the accuracy of charging parameters cannot be detected in real time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a direct current concentrator based on time synchronization measurement for collect the direct current machine that charges measurement information, and can regard as the etalon that the direct current machine that charges measurement on-line measuring.
In order to achieve the above object, the utility model provides a following technical scheme: a direct current concentrator based on time synchronization measurement comprises a synchronization measurement module, a management module, a serial peripheral interface, a wiring terminal, a power supply and a shell.
The synchronous metering module comprises a multi-path direct current high-precision synchronous sampling module, a Beidou/GPS synchronous clock module, an electric energy calculating module, a metering processing module, a storage 1, a real-time clock module, a clock battery and a super capacitor, and is mainly used for direct current circuit electric parameter synchronous measurement, electric energy synchronous metering and electric energy meter on-line detection.
The management module comprises a management processing module, a communication module, a memory 2, a display, an embedded safety control module, an input/output interface and a pulse output interface, and is used for reading positive and negative active electric quantity, four-quadrant reactive electric quantity, voltage, current, active power and reactive power, frozen electric quantity and fault event information of the direct current electric energy meter in the direct current line, and uploading related data of the electric energy meter and data collected by the concentrator to the master station through the communication module.
Furthermore, the multi-path direct current high-precision synchronous sampling module comprises a plurality of voltage sampling links for synchronous measurement of voltage signals of a direct current line, each voltage sampling link comprises a direct current voltage sensor, a program control filter amplifier and an A/D conversion circuit, the multi-path direct current high-precision synchronous sampling module comprises a plurality of current sampling links for synchronous measurement of current signals of the direct current line, each current sampling link comprises a direct current sensor, a program control filter amplifier and an A/D conversion circuit, the Beidou/GPS synchronous clock module provides accurate second pulses for synchronous sampling of the multi-path direct current voltage and current high-precision synchronous sampling module, provides accurate B codes for the electric energy calculating module, and the metering processing module is used for analyzing and processing electric parameters and electric quantity related information, meanwhile, the management processing module is used for calling the electric parameters and the electric quantity information of the electric energy meter in the same direct-current line for online comparison, the memory 1 is used for storing electric measurement data, electric quantity data and measurement related data of the direct-current line, the real-time clock module is used for providing a real-time clock, a calendar and timing for an internal circuit of the concentrator, the clock battery is used for supplying power to the real-time clock module for a long time, and the super capacitor is used for temporarily supplying power to the clock battery when the clock battery is not electrified.
Further, the communication module comprises an RS485 interface, an RS232 interface, a public network communication module, a small wireless module, a WiFi module, an infrared module and a Bluetooth module, the public network communication module is used for communication between the concentrator and the main station, the small wireless module, the WiFi module and the RS485 interface are used for communication between the concentrator and the electric energy meter, the RS232 interface, the infrared module and the Bluetooth module are used for communication between the concentrator and field detection equipment, the memory 2 is used for storing electric measurement data, electric quantity data, measurement related data and various fault and event data of a direct current line, the display is used for digitally displaying electric parameters, power, electric quantity and electric energy constant information, the embedded safety control module is used for controlling safety recording, modification and transmission of user accounts and electric charge information, the input and output interface is used for inputting switching value, and the pulse output interface is used for outputting electric energy pulses.
Furthermore, binding post, including synchronous sampling binding post, communication binding post, output binding post, power binding post, provide the terminal for the physics wiring.
Further, the serial peripheral interface is used for data interaction and communication between the metering processing module and the management processing module.
Further, the power supply comprises a full-wave rectification/filtering circuit, a voltage stabilizing circuit, a direct current voltage adjusting circuit and a standby rechargeable battery, and the input of the full-wave rectification/filtering circuit is alternating current power frequency three-phase four-wire voltage 220V/380V or direct current voltage 220V.
Further, the shell comprises a bottom shell, a face shell, a terminal box, an RS232 communication box, a public network communication box, a small wireless communication box and a WiFi communication box, and the shell is provided with a power supply, a working state and a communication state indication.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model provides a direct current concentrator scheme adopts big dipper GPS synchronous clock module to provide high accuracy synchronous clock signal for voltage, current signal collection, compares with traditional concentrator, has higher electric energy measurement degree of accuracy and less electric quantity resolution ratio.
(2) The utility model discloses a multichannel voltage, the synchronous sampling module of electric current high accuracy gather same circuit multi-branch circuit voltage, current signal in step, compare with traditional concentrator, have more electric parameter collection passageways, practiced thrift the cost greatly, improved concentrator availability factor.
(3) The utility model provides a direct current concentrator has the online crowd detection function of electric energy meter that traditional concentrator can't realize, has improved electric energy meter state monitoring ability greatly, provides quickest, the most instant, the most effectual response for electric energy meter trouble early warning.
Drawings
FIG. 1 is a structural diagram of a DC concentrator of the present invention;
fig. 2 is the schematic diagram of the on-line group detection for the dc electric energy meter.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides a technical scheme: a direct current concentrator based on time synchronization measurement is shown in figure 1 and comprises a synchronization measurement module, a management module, a serial peripheral interface, a wiring terminal, a power supply and a shell.
The synchronous metering module comprises a multi-path direct current high-precision synchronous sampling module, a Beidou/GPS synchronous clock module, an electric energy calculating module, a metering processing module, a memory 1, a real-time clock module, a clock battery and a super capacitor, and is mainly used for direct current circuit electric parameter synchronous measurement, electric energy synchronous metering and electric energy meter on-line detection.
The management module comprises a management processing module, a communication module, a memory 2, a display, an embedded safety control module, an input/output interface and a pulse output interface, and is used for reading information of positive and negative active electric quantity, four-quadrant reactive electric quantity, voltage, current, active power and reactive power, frozen electric quantity, fault events and the like of the direct current electric energy meter in the direct current line, and uploading related data of the electric energy meter and data collected by the concentrator to the master station through the communication module.
Furthermore, the multi-path direct current high-precision synchronous sampling module comprises a plurality of voltage sampling links for synchronous measurement of voltage signals of the direct current lines, each voltage sampling link comprises a direct current voltage sensor, a program control filter amplifier and an A/D conversion circuit, and the number of the voltage sampling links can be 2, 4, 6, 8 and the like. The multi-path direct current high-precision synchronous sampling module comprises a plurality of current sampling links for synchronous measurement of current signals of a direct current line, each current sampling link comprises a direct current sensor, a program control filter amplifier and an A/D conversion circuit, and the number of the current sampling links can be 2, 4, 6, 8 and the like. The Beidou/GPS synchronous clock module provides accurate pulse per second for synchronous sampling of the multi-path direct-current voltage and current high-precision synchronous sampling module, provides accurate B code for the electric energy calculating module, the metering processing module is used for analyzing and processing related information such as electric parameters and electric quantity, meanwhile, the electric energy meter electric parameters and the electric quantity information in the same direct-current line are taken from the management processing module to be compared on line, the memory 1 is used for storing metering related data such as electric measurement data and electric quantity data of the direct-current line, the real-time clock module provides a real-time clock, a calendar, timing and the like for an internal circuit of the concentrator, and the clock battery is used for supplying power to the real-time clock module for a long time and supplying power to the super capacitor and temporarily supplying power to the clock battery without power.
Further, the communication module comprises an RS485 interface, an RS232 interface, a public network communication module, a small wireless module, a WiFi module, an infrared module and a Bluetooth module, the public network communication module is used for communication between the concentrator and the main station, the public network communication module can select a 4G communication module and a 5G communication module, the small wireless module, the WiFi module and the RS485 interface are used for communication between the concentrator and the electric energy meter, the RS232 interface, the infrared module and the Bluetooth module are used for communication between the concentrator and the field detection equipment, the memory 2 is used for storing metering related data such as direct current line electric metering data, electric quantity data and the like and various fault and event data, the display is used for digitally displaying information such as electric parameters, power, electric quantity, electric energy constants and the like, the embedded safety control module is used for controlling safety recording, modification, transmission and the like of information such as user accounts, electric charges and the like, the input and output interface is used for inputting switching values, and the pulse output interface is used for outputting electric energy pulses.
Furthermore, the wiring terminal comprises a synchronous sampling wiring terminal, a communication wiring terminal, an output wiring terminal and a power supply wiring terminal, and provides a terminal for physical wiring.
And further, the serial peripheral interface is used for data interaction and communication between the metering processing module and the management processing module.
Furthermore, the power supply comprises a full-wave rectifying/filtering circuit, a voltage stabilizing circuit, a direct-current voltage adjusting circuit and a standby rechargeable battery, and the input of the full-wave rectifying/filtering circuit is alternating-current power-frequency three-phase four-wire voltage 220V/380V or direct-current voltage 220V.
Further, the shell comprises a bottom shell, a face shell, a terminal box, an RS232 communication box, a public network communication box, a small wireless communication box and a WiFi communication box, and has indications of a power supply, a working state, a communication state and the like.
The utility model discloses each function theory of operation:
(1) electric parameter synchronous measurement and electric energy metering function of multi-path direct current line
When the concentrator is connected into a plurality of direct current lines through the synchronous sampling connecting terminal, the multi-path direct current voltage and current high-precision synchronous sampling module in the synchronous metering module carries out precise voltage and current parameter synchronous sampling on each connected direct current line and marks time marks under the trigger of pulse per second sent by the Beidou/GPS synchronous clock module. The multi-path voltage and current sampling data with time scales are input into the electric energy calculation module for electric energy calculation, and the electric energy calculation result and the voltage and current sampling data are input into the metering processing module for analysis and processing. All the voltage/current sampling data, the electric energy data and other electric parameters are stored in the memory 1, and the electric parameter measurement data and the electric energy data can be transmitted to the management module through the serial peripheral interface and can also be independently transmitted to the outside through the RS485 serial port.
(2) On-line group detection function for metering of direct current electric energy meter
For the on-line group detection of the dc electric energy meters, as shown in fig. 2, the dc concentrator is used as a standard device, the metering data of all the dc electric energy meters in the line to which the dc concentrator belongs is compared with the metering data collected by the dc concentrator on line, and the metering errors of all the dc electric energy meters are calculated in real time, so that the on-line group detection of the dc electric energy meters is realized. Firstly, a direct current concentrator acquires a plurality of direct current branch voltage and current signals under the same direct current line through a multi-path direct current voltage and current high-precision synchronous sampling module, and transmits the acquired data to an electric energy calculating module for calculation to obtain each direct current branch voltage, current and electric energy data; secondly, the direct current concentrator reads voltage, current and electric energy data collected by electric energy meters of all subordinate direct current branches through a communication module; and finally, the metering processing module compares the direct current concentrator with the voltage, current and electric energy data of each direct current branch acquired by the direct current electric energy meter to obtain the metering error of the direct current electric energy meter.
(3) Communication function
Uplink communication: the communication between the direct current concentrator and the main station is realized by 4G and 5G public networks. In the process of uplink communication, the direct current concentrator uploads information such as metering data, faults and events of the direct current electric energy meter periodically and temporarily according to instructions of the master station or modifies system settings such as data acquisition period and rate.
Downlink communication: the direct current concentrator and the direct current electric energy meter are realized through a WiFi module, a small wireless module and an RS485 interface. In the downlink communication process, in order to determine the communication mode with different direct current electric energy meters, the direct current concentrator successively sends a handshake instruction to a target direct current electric energy meter through the WiFi module, the small wireless module and the RS485 interface, stops sending the instruction when receiving a corresponding instruction response, and determines that the current communication mode is the downlink communication mode. And then, numbering and identifying the direct current electric energy meter, and reading the electric parameter data, the electric energy data and various event data stored in the direct current electric energy meter.
Local communication: the direct current concentrator and the field detection equipment interact with each other through an RS232 interface, a Bluetooth module and an infrared module. In the local communication process, the direct current concentrator firstly determines a communication mode by reading data received by an RS232 interface, a Bluetooth module and an infrared module; and secondly, performing temporary work according to the requirements of data reading, sampling and the like of the field detection equipment. The infrared module can output electric energy pulses in real time.
The online group detection of the direct current electric energy meter is realized:
(1) the direct current concentrator is arranged at a branch of a direct current line, and a plurality of paths of direct current voltage and current high-precision synchronous sampling modules are connected to each branch of the direct current line through a synchronous sampling wiring terminal of the direct current concentrator;
(2) the multi-path direct current voltage and current high-precision synchronous sampling module respectively synchronously acquires voltage and current signals of each direct current branch circuit;
(3) transmitting the collected voltage and current data to an electric energy calculation module for calculation to obtain electric energy data of each direct current branch;
(4) the direct current concentrator reads corresponding voltage, current and electric energy data of each direct current branch direct current electric energy meter in a downlink communication mode;
(5) the direct current concentrator metering processing module calculates the metering error of each branch direct current electric energy meter under the same direct current line by taking the body collected data as a standard value and the direct current electric energy meter data as a measured value, and uploads the metering error to the main station in an uplink communication mode.
The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. A direct current concentrator based on time synchronization measurement is characterized in that: the system comprises a synchronous metering module, a management module, a serial peripheral interface, a wiring terminal, a power supply and a shell;
the synchronous metering module comprises a multi-path direct current high-precision synchronous sampling module, a Beidou/GPS synchronous clock module, an electric energy calculating module, a metering processing module, a memory 1, a real-time clock module, a clock battery and a super capacitor, and is mainly used for synchronous measurement of direct current line electric parameters, synchronous metering of electric energy and online detection of an electric energy meter;
the management module comprises a management processing module, a communication module, a memory 2, a display, an embedded safety control module, an input/output interface and a pulse output interface, and is used for reading positive and negative active electric quantity, four-quadrant reactive electric quantity, voltage, current, active power and reactive power, frozen electric quantity and fault event information of the direct current electric energy meter in the direct current line, and uploading related data of the electric energy meter and data collected by the concentrator to the master station through the communication module.
2. The direct current concentrator based on time synchronization measurement according to claim 1, wherein: the multi-path direct current high-precision synchronous sampling module comprises a plurality of voltage sampling links, is used for synchronous measurement of voltage signals of a direct current line, each voltage sampling link comprises a direct current voltage sensor, a program control filter amplifier and an A/D conversion circuit, the multi-path direct current high-precision synchronous sampling module comprises a plurality of current sampling links, is used for synchronous measurement of current signals of the direct current line, each current sampling link comprises a direct current sensor, a program control filter amplifier and an A/D conversion circuit, the Beidou/GPS synchronous clock module provides accurate second pulses for synchronous sampling of the multi-path direct current voltage and current high-precision synchronous sampling module, provides accurate B codes for the electric energy calculation module, the metering processing module is used for analyzing and processing electric parameters and electric quantity related information, and simultaneously calls electric energy meter electric parameters and electric quantity information in the same direct current line from the management processing module for on-line comparison, the storage 1 is used for storing direct-current line electric measurement data, electric quantity data and measurement related data, the real-time clock module provides a real-time clock, a calendar and timing for an internal circuit of the concentrator, the clock battery is used for supplying power to the real-time clock module for a long time, and the super capacitor is used for temporarily supplying power to the clock battery without power to the real-time clock module.
3. The direct current concentrator based on time synchronization measurement according to claim 1, wherein: the communication module comprises an RS485 interface, an RS232 interface, a public network communication module, a small wireless module, a WiFi module, an infrared module and a Bluetooth module, the public network communication module is used for communication between the concentrator and the master station, the small wireless module, the WiFi module and the RS485 interface are used for communication between the concentrator and the electric energy meter, the RS232 interface, the infrared module and the Bluetooth module are used for communication between the concentrator and field detection equipment, the memory 2 is used for storing direct-current line electric measurement data, electric quantity data, measurement related data and various fault and event data, the display is used for digitally displaying electric parameters, power, electric quantity and electric energy constant information, the embedded safety control module is used for controlling safety recording, modification and transmission of user accounts and electric charge information, the input and output interface is used for inputting switching quantity and outputting clock signals, and the pulse output interface is used for outputting electric energy pulses.
4. The direct current concentrator based on time synchronization measurement according to claim 1, wherein: the wiring terminal comprises a synchronous sampling wiring terminal, a communication wiring terminal, an output wiring terminal and a power supply wiring terminal and provides terminals for physical wiring.
5. The direct current concentrator based on time synchronization measurement according to claim 1, wherein: and the serial peripheral interface is used for data interaction and communication between the metering processing module and the management processing module.
6. The direct current concentrator based on time synchronization measurement according to claim 1, wherein: the power supply comprises a full-wave rectifying/filtering circuit, a voltage stabilizing circuit, a direct-current voltage adjusting circuit and a standby rechargeable battery, and the input of the power supply is alternating-current power-frequency three-phase four-wire voltage 220V/380V or direct-current voltage 220V.
7. The direct current concentrator based on time synchronization measurement according to claim 1, wherein: the shell comprises a bottom shell, a face shell, a terminal box, an RS232 communication box, a public network communication box, a small wireless communication box and a WiFi communication box, and is provided with a power supply, a working state and a communication state indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921365761.1U CN210982601U (en) | 2019-08-21 | 2019-08-21 | Direct current concentrator based on time synchronization measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921365761.1U CN210982601U (en) | 2019-08-21 | 2019-08-21 | Direct current concentrator based on time synchronization measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210982601U true CN210982601U (en) | 2020-07-10 |
Family
ID=71438283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921365761.1U Active CN210982601U (en) | 2019-08-21 | 2019-08-21 | Direct current concentrator based on time synchronization measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210982601U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441596A (en) * | 2019-08-21 | 2019-11-12 | 国网江西省电力有限公司电力科学研究院 | A kind of direct current concentrator based on time synchronization metering |
| CN112798860A (en) * | 2020-12-28 | 2021-05-14 | 珠海格力电器股份有限公司 | Electric quantity calculation method and device and multi-split system |
| CN113075609A (en) * | 2021-04-13 | 2021-07-06 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Wave recording metering system |
-
2019
- 2019-08-21 CN CN201921365761.1U patent/CN210982601U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441596A (en) * | 2019-08-21 | 2019-11-12 | 国网江西省电力有限公司电力科学研究院 | A kind of direct current concentrator based on time synchronization metering |
| CN112798860A (en) * | 2020-12-28 | 2021-05-14 | 珠海格力电器股份有限公司 | Electric quantity calculation method and device and multi-split system |
| CN112798860B (en) * | 2020-12-28 | 2022-02-01 | 珠海格力电器股份有限公司 | Electric quantity calculation method and device and multi-split system |
| CN113075609A (en) * | 2021-04-13 | 2021-07-06 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Wave recording metering system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210982601U (en) | Direct current concentrator based on time synchronization measurement | |
| CN202210151U (en) | System for remote checking and monitoring for electric energy metering device | |
| CN104267374B (en) | Metering device on-line checking and status assessing system | |
| CN102879661B (en) | A kind of distribution automation terminal detection method and system | |
| CN110441596A (en) | A kind of direct current concentrator based on time synchronization metering | |
| CN103038971B (en) | Method for controlling PV installations in an electrical grid | |
| CN108490382B (en) | Remote online verification method and system for high-voltage electric energy meter measuring plate | |
| CN104267373A (en) | Gateway meter assessment device | |
| CN112255584A (en) | Remote online calibration method for intelligent electric energy meter | |
| CN110187193B (en) | Dielectric loss monitoring system and method based on total-station voltage transformer stability judgment | |
| CN113949947B (en) | Wireless multifunctional data acquisition unit for energy-saving monitoring | |
| CN110736957B (en) | Online detection system and method for electric energy metering device based on clock synchronization | |
| CN212301736U (en) | Line loss detection equipment based on edge calculation | |
| CN213072726U (en) | Power distribution network architecture system based on intelligent concentrator | |
| CN108021117A (en) | Energy management system based on cloud platform | |
| CN205139355U (en) | Leading collection system suitable for system is compared to total mark electric quantity | |
| CN101452638B (en) | Electrical energy meter or power load administrative terminal verifying device | |
| CN110940854B (en) | Alternating current synchronous electric energy metering system based on Beidou/GPS clock | |
| CN210323193U (en) | Intelligent electric energy remote metering system | |
| CN109613354A (en) | A kind of power quality wireless monitor system and its monitoring method | |
| CN103513221B (en) | Secondary voltage drop/secondary load on-Line Monitor Device and system and monitoring method thereof | |
| CN206945867U (en) | A kind of line loss real time monitoring apparatus | |
| CN111090003B (en) | Synchronous direct current electric energy metering system based on Beidou/GPS clock | |
| CN114966521A (en) | Metering device analysis system based on simulation cloud ammeter | |
| CN203825127U (en) | Multi-purpose inspection terminal for single phase and three phase power consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |