CN112953001A - Distributed transformer area substation device based on 4G - Google Patents
Distributed transformer area substation device based on 4G Download PDFInfo
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- CN112953001A CN112953001A CN202110105206.0A CN202110105206A CN112953001A CN 112953001 A CN112953001 A CN 112953001A CN 202110105206 A CN202110105206 A CN 202110105206A CN 112953001 A CN112953001 A CN 112953001A
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- 238000007710 freezing Methods 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 claims description 6
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a 4G-based distributed transformer substation device, which comprises: the local communication module receives the task data of the data processing module through the data exchange module, acquires user electricity utilization acquisition information according to the task data, and sends the user electricity utilization acquisition information to the data processing module; the data processing module receives task data of the master station system in a 4G communication mode, wherein the task data comprise: the data processing module is used for carrying out data processing on the user power utilization acquisition information and sending the data-processed user power utilization acquisition information to the master station system; the storage module is electrically connected with the data exchange module and used for receiving and storing the task data and the user electricity utilization acquisition information. By adopting the modular structure, the data interaction between the transformer substation and the main station system and the collection of the power utilization information of the users are realized, the independent service processing of the transformer substation is realized, the localized processing of the main station function is completed, and the stability of the system operation is improved.
Description
Technical Field
The invention relates to the field of information acquisition of electric equipment, in particular to a 4G-based distributed transformer area substation device.
Background
Related technical specifications of the power utilization information acquisition system of the power consumer are released by the national grid company in 2009, and the series of technical specifications provide detailed and clear requirements for technical functions, type specifications and communication protocols of products. The concentrator becomes the main equipment for collecting the electricity utilization information, and replaces the collection mode mainly based on manual meter reading. Through the development of more than ten years, the coverage rate of the concentrator in China reaches 95%, and the functions of automatic acquisition of power utilization information, settlement of power utilization data, remote fee control and the like are basically realized.
With the development of new technologies such as internet of things, cloud computing and edge computing, the concentrator serving as single-function power utilization information acquisition equipment cannot meet the development of the power internet of things. The concentrator is installed on the secondary side of the transformer in the transformer area and mainly comprises a local communication module, a remote communication module and a concentrator body. The concentrator body is a data processing unit of the whole device and is communicated with the local and remote communication modules through serial ports. The collection of the power utilization information of the user is completed through the local communication module; the body stores the collected electricity utilization information; the remote communication module is used for completing uploading of the power utilization information to the master station; the main station processes the electricity utilization information and completes other high-level application functions such as electricity charge calculation and the like.
The concentrator has the problems of limited computing capability, low communication speed, single function, fixed type and the like, and can not meet the requirements of high-level business application implementation of interaction, real-time communication, video monitoring, station area detection, high-frequency acquisition, accurate line loss calculation, accurate time setting and the like between the power internet of things and users.
Disclosure of Invention
The embodiment of the invention aims to provide a 4G-based distributed transformer area substation device, which realizes data interaction between the distributed transformer area substation device and a main station system and acquisition of user power consumption information by adopting a modular structure, realizes independent service processing of the transformer area substation, completes local processing of the main station function and improves the stability of system operation.
In order to solve the above technical problem, an embodiment of the present invention provides a 4G-based distributed substation device, including: the system comprises a data exchange module, a data processing module, a storage module and a local communication module;
the local communication module receives the task data of the data processing module through the data exchange module, acquires user electricity utilization acquisition information according to the task data, and sends the user electricity utilization acquisition information to the data processing module;
the data processing module receives task data of a master station system in a 4G communication mode, wherein the task data comprises: the data processing module is used for processing the user electricity utilization acquisition information and sending the user electricity utilization acquisition information after data processing to the master station system;
the storage module is electrically connected with the data exchange module and used for receiving and storing the task data and the user electricity utilization acquisition information.
Furthermore, the data processing module receives subscription information of a user in the 4G communication mode, and sends the user electricity utilization acquisition information after data processing to the user according to the subscription information.
Further, the data processing includes: the method comprises the following steps of electricity consumption information and electricity charge settlement, local charge control, acquisition success rate statistical analysis, user data curve statistical pushing and/or accurate real-time line loss analysis.
Further, the data processing module sends out a transient freezing instruction;
and the local communication module sends the instantaneous freezing instruction to the electric meter of the user, acquires instantaneous freezing electricity utilization information, and performs reference line loss analysis and line loss real-time analysis based on time synchronization.
Furthermore, the data processing module can also perform self-timing, positioning, distribution area fault analysis and/or intelligent operation and maintenance.
Further, the local communication module includes: HPLC chips and/or wireless chips.
Further, the 4G-based distributed platform area substation device further comprises: a platform area detection module;
the transformer area detection module acquires environmental information and/or video monitoring information of a transformer area power distribution room and sends the environmental information and/or the video monitoring information to the master station system through the data processing module;
the platform district detection module includes: the system comprises a video monitoring chip, a wireless camera, an ambient temperature smoke detection sensor and/or an entrance guard state detection circuit.
Further, the 4G-based distributed substation area substation device further includes: a power supply module;
and the power supply module supplies power to the data processing module, the local communication module and the distribution room detection module through the data exchange module.
Further, the 4G-based distributed substation area substation device further includes: a device housing;
the device shell is a pluggable structure.
Furthermore, the data exchange module provides an ethernet-form data bus exchange interface for the data exchange module, the data processing module, the storage module and the local communication module through an ethernet exchange chip and a phy chip.
The technical scheme of the embodiment of the invention has the following beneficial technical effects:
by adopting the modular structure, the data interaction between the distributed substation device and the main station system and the collection of the user power consumption information are realized, the independent service processing of the substation is realized, the localized processing of the main station function is completed, the construction and maintenance cost of the main station system is reduced, the real-time response capability of data is improved, the data is directly pushed to the user, and the stability of the system operation is improved.
Drawings
Fig. 1 is a schematic diagram of a 4G distributed-station-based substation device provided in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Fig. 1 is a schematic diagram of a 4G distributed-station-based substation device provided in an embodiment of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a 4G-based distributed substation device, including: the device comprises a data exchange module, a data processing module, a storage module and a local communication module. The local communication module receives the task data of the data processing module through the data exchange module, acquires user electricity utilization acquisition information according to the task data, and sends the user electricity utilization acquisition information to the data processing module; the data processing module receives task data of the master station system in a 4G communication mode, wherein the task data comprise: the data processing module is used for carrying out data processing on the user power utilization acquisition information and sending the data-processed user power utilization acquisition information to the master station system; the storage module is electrically connected with the data exchange module and used for receiving and storing the task data and the user electricity utilization acquisition information.
According to the technical scheme, the modular structure is adopted, data interaction between the distributed transformer area substation device and the main station system and collection of user power utilization information are achieved, independent service processing of the transformer area substation is achieved, localized processing of the main station function is completed, and stability of system operation is improved.
In a specific implementation manner of the embodiment of the invention, the data processing module has a user direct interaction function, receives subscription information of a user in a 4G communication mode, and sends the user electricity utilization acquisition information after data processing to the user according to the subscription information.
The user direct interaction function means that a user can directly inquire real-time data of the intelligent electric meter through the device without passing through a master station, can directly operate the intelligent electric meter to realize switching-off and switching-on functions, and can directly customize various service functions such as power accounting and load energy consumption analysis.
Specifically, the data processing includes: the method comprises the following steps of electricity consumption information and electricity charge settlement, local charge control, acquisition success rate statistical analysis, user data curve statistical pushing and/or accurate real-time line loss analysis.
Further, accurate real-time line loss analysis includes: the data processing module sends out an instantaneous freezing instruction; and the local communication module sends the instantaneous freezing instruction to an ammeter of a user, acquires instantaneous freezing electricity utilization information, and performs reference line loss analysis and line loss real-time analysis based on time synchronization on the instantaneous freezing electricity utilization information.
In addition, the data processing module can also perform self-timing, positioning, distribution room fault analysis and/or intelligent operation and maintenance.
It can be known that the data processing module is a computing processing heart of the whole device, which has a high-performance CPU and a large-capacity memory, and is externally connected with 4G wireless communication through a high-speed USB/PCIe interface. And receiving user profile information and user acquisition task information of the master station system through 4G communication, and directly receiving user subscription information. And the information is converted and processed and is transmitted to the local communication module, the transformer area detection module and other service modules through the data exchange module. And meanwhile, receiving the returned data of each service module, and transmitting the data to the storage module through the data exchange module to store the data. The localization of the master station function is mainly completed through calculation and processing of the data processing module, the electricity charge settlement is carried out on daily electricity consumption and minute electricity consumption charge calculation and settlement according to user file information electricity price information and electricity consumption data acquired by the local communication module, and related information is pushed to the user and the master station; the remote charge control of the master station is realized as local charge control, and the operations of power failure alarm, user switching on and switching off and the like are performed according to the power utilization information and the power charge information of the user. And counting the acquisition success rate of the acquired data, counting the corresponding acquisition success rate according to the power utilization information data returned by the local communication module, reporting the acquisition success rate to the master station, and reporting the corresponding data acquisition curve to the master station. And (3) accurate line loss analysis, wherein instantaneous freezing is initiated by the data processing module in the function, the local communication module sends the command to the user ammeter, and then the instantaneous frozen electricity utilization information is read to perform accurate line loss analysis and line loss real-time calculation analysis based on time synchronization.
The data processing module supports positioning and time service to have Beidou and GPS positioning, and self-timing of the device can be realized through the time service module.
The data processing module realizes local calculation, user direct interaction and main station function localization by adopting a high-performance CPU and a memory as a main processing unit, supports positioning and time service, integrates 4G communication support and main station real-time communication in the module, supports video and audio image file transmission, and supports a 4G network to realize time service.
Specifically, the local communication module includes: and the HPLC chip and/or the wireless chip receives the task data of the data processing module through the data exchange module, acquires the user power utilization information according to the task requirement, and transmits the acquired data to the data processing module to perform high-level data application processing.
Optionally, the 4G-based distributed platform area substation device further includes: and a platform area detection module. The transformer area detection module acquires environmental information and/or video monitoring information of the transformer area power distribution room and sends the environmental information and/or the video monitoring information to the main station system through the data processing module. Specifically, the platform district detection module includes: the system comprises a video monitoring chip, a wireless camera, an ambient temperature smoke detection sensor and/or an entrance guard state detection circuit.
The platform area detection module supports video and audio picture file transmission, and video or picture information of power distribution room video monitoring information and a service module with a video monitoring function can be accessed to the main station.
Optionally, the 4G-based distributed platform area substation device further includes: a power supply module; and the power supply module supplies power to the data processing module, the local communication module and the transformer area detection module through the data exchange module.
Specifically, the power supply module is externally connected with 220V/100V and 57.7V power supplies, and performs rectification, filtering and voltage stabilization through the switching power supply module to provide stable +12V, -12V, +5V, + 3.3V; the power supplies respectively provide complete power supplies for the service modules through the power supply wiring of the data exchange module.
Specifically, the 4G-based distributed platform area substation device further includes: a device housing; the device casing is a pluggable structure, supports random plugging of multiple modules, improves the processing speed of the functional module in the device casing when the functional module fails, and improves the processing efficiency.
In addition, the device shell can be provided with a plurality of redundant slots for performing functional expansion according to the field service requirement.
Specifically, the data exchange module provides an ethernet-type data bus exchange interface for the data exchange module, the data processing module, the storage module and the local communication module through an ethernet exchange chip and a phy chip.
Further, the switching interface includes: european style pin sockets, regular pin sockets, and/or rj45 interfaces.
Optionally, the memory module integrates a plurality of memory chips, and optionally, the memory chip is an eMMC type memory chip; the storage module supports database technologies, which include mainstream database technologies such as MySQL, SQL Server, and MongoDB.
Optionally, the data exchange module implements data exchange by using a 10M/100M/1000M ethernet.
Optionally, the 4G communication mode is that the data processing module implements external 4G communication processing through a USB interface.
The embodiment of the invention aims to protect a substation device based on a 4G distributed substation, which comprises the following steps: the system comprises a data exchange module, a data processing module, a storage module and a local communication module; the local communication module receives the task data of the data processing module through the data exchange module, acquires user electricity utilization acquisition information according to the task data, and sends the user electricity utilization acquisition information to the data processing module; the data processing module receives task data of the master station system in a 4G communication mode, wherein the task data comprise: the data processing module is used for carrying out data processing on the user power utilization acquisition information and sending the data-processed user power utilization acquisition information to the master station system; the storage module is electrically connected with the data exchange module and used for receiving and storing the task data and the user electricity utilization acquisition information. The technical scheme has the following effects:
by adopting the modular structure, the data interaction between the distributed substation device and the main station system and the collection of the user power consumption information are realized, the independent service processing of the substation is realized, the localized processing of the main station function is completed, the construction and maintenance cost of the main station system is reduced, the real-time response capability of data is improved, the data is directly pushed to the user, and the stability of the system operation is improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A4G-based distributed platform area substation device is characterized by comprising: the system comprises a data exchange module, a data processing module, a storage module and a local communication module;
the local communication module receives the task data of the data processing module through the data exchange module, acquires user electricity utilization acquisition information according to the task data, and sends the user electricity utilization acquisition information to the data processing module;
the data processing module receives task data of a master station system in a 4G communication mode, wherein the task data comprises: the data processing module is used for processing the user electricity utilization acquisition information and sending the user electricity utilization acquisition information after data processing to the master station system;
the storage module is electrically connected with the data exchange module and used for receiving and storing the task data and the user electricity utilization acquisition information.
2. The 4G-based distributed stage sub-station apparatus according to claim 1,
the data processing module also receives subscription information of a user in the 4G communication mode, and sends the user electricity utilization acquisition information after data processing to the user according to the subscription information.
3. The 4G-based distributed stage sub-station apparatus according to claim 1,
the data processing comprises: the method comprises the following steps of electricity consumption information and electricity charge settlement, local charge control, acquisition success rate statistical analysis, user data curve statistical pushing and/or accurate real-time line loss analysis.
4. The 4G-based distributed stage sub-station apparatus according to claim 3,
the data processing module sends out an instantaneous freezing instruction;
and the local communication module sends the instantaneous freezing instruction to the electric meter of the user, acquires instantaneous freezing electricity utilization information, and performs reference line loss analysis and line loss real-time analysis based on time synchronization.
5. The 4G-based distributed stage sub-station apparatus according to claim 3,
the data processing module can also perform self-timing, positioning, distribution room fault analysis and/or intelligent operation and maintenance.
6. The 4G-based distributed stage sub-station apparatus according to claim 1,
the local communication module includes: HPLC chips and/or wireless chips.
7. The 4G-based distributed substation area substation device according to claim 1, further comprising: a platform area detection module;
the transformer area detection module acquires environmental information and/or video monitoring information of a transformer area power distribution room and sends the environmental information and/or the video monitoring information to the master station system through the data processing module;
the platform district detection module includes: the system comprises a video monitoring chip, a wireless camera, an ambient temperature smoke detection sensor and/or an entrance guard state detection circuit.
8. The 4G-based distributed substation area substation device according to claim 1, further comprising: a power supply module;
and the power supply module supplies power to the data processing module, the local communication module and the distribution room detection module through the data exchange module.
9. The 4G-based distributed substation area substation device according to claim 1, further comprising: a device housing;
the device shell is a pluggable structure.
10. The 4G-based distributed stage sub-station apparatus according to claim 1,
the data exchange module provides an Ethernet-type data bus exchange interface for the data exchange module, the data processing module, the storage module and the local communication module through an Ethernet exchange chip and a phy chip.
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| CN113991875A (en) * | 2021-12-27 | 2022-01-28 | 江苏驷源电力有限公司 | Low-voltage distribution network terminal equipment and message interaction method thereof |
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| CN101951027A (en) * | 2010-09-01 | 2011-01-19 | 中国电力科学研究院 | Uniform data acquisition and monitoring system of low-medium voltage power distribution network |
| CN103595816A (en) * | 2013-11-25 | 2014-02-19 | 国家电网公司 | Integrated electric marketing charge-reminding platform system |
| CN106291094A (en) * | 2016-08-06 | 2017-01-04 | 房璐华 | A kind of method and device pushing its electricity consumption data from electric energy meter to user |
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| CN111313551A (en) * | 2020-03-05 | 2020-06-19 | 广东电网有限责任公司计量中心 | Multi-user-friendly interactive power utilization system based on intelligent power utilization network |
| CN111371185A (en) * | 2020-04-17 | 2020-07-03 | 南京大全自动化科技有限公司 | Line loss monitoring system and method based on distribution transformer terminal |
| CN112164181A (en) * | 2020-09-04 | 2021-01-01 | 国网思极紫光(青岛)微电子科技有限公司 | Power consumption control method and power consumption control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113991875A (en) * | 2021-12-27 | 2022-01-28 | 江苏驷源电力有限公司 | Low-voltage distribution network terminal equipment and message interaction method thereof |
| CN113991875B (en) * | 2021-12-27 | 2022-03-15 | 江苏驷源电力有限公司 | Low-voltage distribution network terminal equipment and message interaction method thereof |
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Application publication date: 20210611 |