CN115528815B - Photovoltaic inverter converter and communication proxy method - Google Patents
Photovoltaic inverter converter and communication proxy method Download PDFInfo
- Publication number
- CN115528815B CN115528815B CN202211294527.0A CN202211294527A CN115528815B CN 115528815 B CN115528815 B CN 115528815B CN 202211294527 A CN202211294527 A CN 202211294527A CN 115528815 B CN115528815 B CN 115528815B
- Authority
- CN
- China
- Prior art keywords
- interface
- photovoltaic inverter
- communication
- data
- configuration
- 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
- 238000004891 communication Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000012423 maintenance Methods 0.000 claims abstract description 19
- 238000004128 high performance liquid chromatography Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H02J13/00007—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 the power network as support for the transmission
-
- 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
-
- 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
- H02J13/00016—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 a wired telecommunication network or a data transmission bus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Inverter Devices (AREA)
Abstract
The application discloses a photovoltaic inverter and a communication proxy method, wherein the photovoltaic inverter comprises a shell and a main controller arranged in the shell; an interface connected with the main controller is arranged on the shell; the interface comprises a power interface, a Usb configuration interface, an RS485/RS232 interface and a communication interface; wherein: the power interface comprises a live wire and a zero wire and is used for supplying power and carrying out HPLC carrier communication; the Usb configuration interface is used for configuration of an opening; the RS485/RS232 interface is used for being connected with the photovoltaic inverter; the communication interface is used for being externally connected with an LTE communication rod. Through set up each interface of being connected with main control unit on photovoltaic contravariant converter casing, can carry out data interaction with producer and power supply company respectively to satisfy the maintenance demand of producer to present net operation equipment and power supply company to the control demand of equipment simultaneously.
Description
Technical Field
The application belongs to the technical field of power electronics, and particularly relates to a photovoltaic inverter converter and a communication proxy method.
Background
At present, as shown in fig. 1, the management of a photovoltaic inverter is mainly that data of the photovoltaic inverter is sent to a data background of an inverter manufacturer through an RS485/RS232 interface and an LTE communication rod provided by the inverter manufacturer, and a power supply company cannot directly manage the inverter. If the communication interface of the LTE communication bar is occupied, the interface is accessed to a power grid related management network, and a manufacturer cannot monitor the operation data of the inverter, so that inconvenience is caused to equipment maintenance and fault positioning.
Therefore, the conventional photovoltaic inverter has a problem that the use is inconvenient and only the requirements of a manufacturer or a power supply company can be satisfied.
Disclosure of Invention
In order to solve the above problems, it is necessary to provide a photovoltaic inverter and a communication proxy method which are convenient to use and have high practicability and can meet the requirements of manufacturers and power supply companies.
A photovoltaic inverter comprises a shell and a main controller arranged inside the shell; an interface connected with the main controller is arranged on the shell; the interface comprises a power interface, a Usb configuration interface, an RS485/RS232 interface and a communication interface; wherein:
the power interface comprises a live wire and a zero wire and is used for supplying power and carrying out HPLC carrier communication;
the Usb configuration interface is used for configuration of an opening;
the RS485/RS232 interface is used for being connected with the photovoltaic inverter;
the communication interface is used for being externally connected with an LTE communication rod.
In one embodiment, the housing is further provided with an indicator light, and the indicator light is connected with the main controller and is used for indicating the interface state.
In one embodiment, the indicator light comprises a power indicator light and an interface indicator light.
In one embodiment, two or more than two RS485/RS232 interfaces are arranged.
In one embodiment, the main controller is further configured to store maintenance data of the photovoltaic inverter through the RS485/RS232 interface.
In one embodiment, the configuration of the switch includes a port protocol configuration, a rate configuration, an inverter model configuration.
In one embodiment, the communication interface is further connected with an LTU, and the operation management is performed on the photovoltaic inverter through the RS485/RS232 interface.
In one embodiment, the communication interface is also connected with a public network, and the monitoring and debugging are carried out on the photovoltaic inverter through the RS485/RS232 interface.
A communication proxy method applied to a photovoltaic inverter converter, the method comprising:
the photovoltaic inverter is in communication connection with the photovoltaic inverter through an RS485/RS232 interface, and the photovoltaic inverter is connected with the LTU and the public network through a communication interface;
performing switching configuration through a Usb configuration interface on the photovoltaic inverter converter;
a main controller in the photovoltaic inverter receives and stores data of the photovoltaic inverter through the RS485/RS232 interface; and receiving maintenance data of the photovoltaic inverter through the communication interface, and transmitting the maintenance data to the photovoltaic inverter through the RS485/RS232 interface.
The photovoltaic inverter converter comprises a shell and a main controller arranged in the shell; an interface connected with the main controller is arranged on the shell; the interface comprises a power interface, a Usb configuration interface, an RS485/RS232 interface and a communication interface; wherein: the power interface comprises a live wire and a zero wire and is used for supplying power and carrying out HPLC carrier communication; the Usb configuration interface is used for configuration of an opening; the RS485/RS232 interface is used for being connected with the photovoltaic inverter; the communication interface is used for being externally connected with an LTE communication rod. Through set up each interface of being connected with main control unit on photovoltaic contravariant converter casing, can carry out data interaction with producer and power supply company respectively to satisfy the maintenance demand of producer to present net operation equipment and power supply company to the control demand of equipment simultaneously.
Drawings
Fig. 1 is a connection structure diagram using a photovoltaic inverter in the background art;
FIG. 2 is a block diagram of a photovoltaic inverter converter in one embodiment;
fig. 3 is a connection structure diagram of a photovoltaic inverter in one embodiment.
Detailed Description
For a better understanding of the present application, the content of the present application will be further elucidated with reference to the drawings and examples, but the application is not limited to the examples described below.
In one embodiment, as shown in fig. 2, the photovoltaic inverter provided by the present application mainly includes: a housing 100 and a main controller 200 disposed inside the housing 100; the housing 100 is provided with an interface connected with the main controller 200; the interfaces comprise a power interface 110, a Usb configuration interface 120, an RS485/RS232 interface 130 and a communication interface 140; wherein: the power interface 110 includes a live wire and a neutral wire for power supply and HPLC carrier communication; the Usb configuration interface 120 is used for configuration of the opening; the RS485/RS232 interface 130 is used for being connected with the photovoltaic inverter; the communication interface 140 is used to external the LTE communication stick.
As shown in fig. 2, the case 100 may be rectangular parallelepiped in shape with one end protruding outward. The inside of the case 100 may be provided with a main controller 200 for realizing control of the entire photovoltaic inverter.
Each interface may be provided on the outer surface of the housing 100 and each interface is connected with the main controller 200. The interfaces may include a power interface 110, a Usb configuration interface 120, an RS485/RS232 interface 130, and a communication interface 140, among others.
In this embodiment, the power interface 110 is provided with a live wire and a zero wire, which can be connected with an external power supply, so as to provide electric energy for the whole photovoltaic inverter; meanwhile, the power interface 110 may also be used for HPLC carrier communication.
The Usb configuration interface 120 may be used for an open configuration. Before the photovoltaic inverter provided by the application is used, the on-site switching configuration can be performed through the Usb configuration interface 120 according to the use requirement.
The RS485/RS232 interface 130 can be used for being connected with a photovoltaic inverter, and data in the photovoltaic inverter can be transmitted to the main controller 200 through the RS485/RS232 interface 130 and then transmitted to other places such as factories, power companies and the like through the main controller 200; likewise, monitoring maintenance data of manufacturers and power companies can be transmitted to the photovoltaic inverter through the main controller 200 and the RS485/RS232 interface 130.
The communication interface 140 may be used to external an LTE communication stick. The data of the photovoltaic inverter can be sent to the data background of the inverter manufacturer through the RS485/RS232 interface 130 and an LTE communication rod provided by the inverter manufacturer for subsequent processing.
In this embodiment, by setting each interface connected to the main controller on the photovoltaic inverter housing, data interaction can be performed with the manufacturer and the power supply company, so as to meet the maintenance requirement of the manufacturer on the current network operation device and the monitoring requirement of the power supply company on the device at the same time.
In one embodiment, as shown in fig. 2, an indicator light 150 is further disposed on the housing 100, where the indicator light 150 is connected to the main controller 200 for indicating the interface status.
In one embodiment, the indicator light may include a power indicator light, an interface indicator light. Wherein, the power indicator light can be used for showing whether the power is connected, and the interface pilot light can be used for showing whether the interface handles the connection state. Specifically, the number of interface indicator lamps may be identical to the number of interfaces, i.e. one interface corresponds to one interface indicator lamp.
In the embodiment, the states of the photovoltaic inverter converter and each interface can be clearly and intuitively seen by arranging the power indicator lamp and the interface indicator lamp.
As shown in FIG. 2, in one embodiment, the RS485/RS232 interface 130 is provided with two or more. In this embodiment, three RS485/RS232 interfaces 130 may be provided, and which RS485/RS232 interface 130 is specifically used may be configured through the Usb configuration interface 120.
In one embodiment, the master controller is further configured to store maintenance data for the photovoltaic inverter via an RS485/RS232 interface. The maintenance data of the photovoltaic inverter can be transmitted to the main controller for storage through the RS485/RS232 interface, so that the main controller can conveniently transmit the maintenance data to a manufacturer, and equipment maintenance of the photovoltaic inverter can be conveniently carried out.
In one embodiment, the configuration of the switch may include a port protocol configuration, a rate configuration, an inverter model configuration.
In one embodiment, as shown in fig. 3, the communication interface is also connected with the LTU, and performs operation management on the photovoltaic inverter through an RS485/RS232 interface. Specifically, the grid-connected switch and the like are connected to the background of the power company through the interface, and operations such as operation monitoring, remote upgrading and the like are provided.
As shown in fig. 3, in one embodiment, the communication interface is further connected to a public network, and the monitoring and debugging of the photovoltaic inverter are performed through an RS485/RS232 interface. Specifically, the photovoltaic inverter converter can be connected to an inverter manufacturer through a public network to provide equipment for remote monitoring, debugging and the like.
In one embodiment, the photovoltaic inverter may be directly accessed to the background of the utility company via HPLC protocols, providing operational monitoring, remote upgrades, and the like.
The photovoltaic inverter converter is communicated with the photovoltaic inverter through the modbus, and as different private protocols exist among the families, the private protocols of a plurality of brands of the current main stream are required to be distinguished in software, the specific use of the photovoltaic inverter converter is configured when the engineering construction is carried out, after the photovoltaic inverter converter is communicated with the photovoltaic inverter, all maintenance data of the photovoltaic inverter are stored locally, the photovoltaic inverter converter is disguised as the photovoltaic inverter, and the communication is carried out with the relevant background.
In one embodiment, the application method of the photovoltaic inverter provided by the application is as follows:
the photovoltaic inverter is in communication connection with the photovoltaic inverter through an RS485/RS232 interface, and the photovoltaic inverter is connected with the LTU and the public network through a communication interface;
performing switching configuration through a Usb configuration interface on the photovoltaic inverter converter;
a main controller in the photovoltaic inverter receives and stores data of the photovoltaic inverter through an RS485/RS232 interface; maintenance data of the photovoltaic inverter is received through the communication interface and is transmitted to the photovoltaic inverter through the RS485/RS232 interface.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The photovoltaic inverter converter is characterized by comprising a shell and a main controller arranged inside the shell; an interface connected with the main controller is arranged on the shell; the interface comprises a power interface, a Usb configuration interface, an RS485/RS232 interface and a communication interface; wherein:
the power interface comprises a live wire and a zero wire and is used for receiving external power supply and HPLC carrier communication;
the Usb configuration interface is used for configuration of an opening office, including port protocol configuration, rate configuration and inverter model configuration;
the RS485/RS232 interface is used for being connected with the photovoltaic inverter;
the communication interface is used for externally connecting an LTE communication rod;
the main controller receives and stores the data of the photovoltaic inverter through the RS485/RS232 interface and uploads the data to a manufacturer and a power supply company through the communication interface; and receiving maintenance data, operation management data and monitoring and debugging data of the photovoltaic inverter through the communication interface, and transmitting the maintenance data, the operation management data and the monitoring and debugging data to the photovoltaic inverter through the RS485/RS232 interface.
2. The photovoltaic inverter of claim 1, wherein an indicator light is further provided on the housing, the indicator light being connected to the main controller for indicating an interface status.
3. The photovoltaic inverter of claim 2 wherein the indicator light comprises a power indicator light, an interface indicator light.
4. The photovoltaic inverter of claim 1 wherein the RS485/RS232 interface is provided with two or more.
5. The photovoltaic inverter of claim 1 wherein the master controller is further configured to store maintenance data for the photovoltaic inverter via the RS485/RS232 interface.
6. The photovoltaic inverter of claim 1 wherein the communication interface is further coupled to an LTU and the photovoltaic inverter is operational managed via the RS485/RS232 interface.
7. The photovoltaic inverter of claim 1 wherein the communication interface is further connected to a public network and the photovoltaic inverter is monitored and commissioned via the RS485/RS232 interface.
8. A communication proxy method applied to the photovoltaic inverter converter of any one of claims 1 to 7, the method comprising:
the photovoltaic inverter is in communication connection with the photovoltaic inverter through an RS485/RS232 interface, and the photovoltaic inverter is connected with the LTU and the public network through a communication interface;
performing switching configuration through a Usb configuration interface on the photovoltaic inverter converter;
the main controller in the photovoltaic inverter receives and stores the data of the photovoltaic inverter through the RS485/RS232 interface and uploads the data to a manufacturer and a power supply company through a communication interface; and receiving maintenance data, operation management data and monitoring and debugging data of the photovoltaic inverter through the communication interface, and transmitting the maintenance data, the operation management data and the monitoring and debugging data to the photovoltaic inverter through the RS485/RS232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294527.0A CN115528815B (en) | 2022-10-21 | 2022-10-21 | Photovoltaic inverter converter and communication proxy method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294527.0A CN115528815B (en) | 2022-10-21 | 2022-10-21 | Photovoltaic inverter converter and communication proxy method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115528815A CN115528815A (en) | 2022-12-27 |
| CN115528815B true CN115528815B (en) | 2023-08-15 |
Family
ID=84702887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211294527.0A Active CN115528815B (en) | 2022-10-21 | 2022-10-21 | Photovoltaic inverter converter and communication proxy method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115528815B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203858746U (en) * | 2014-05-15 | 2014-10-01 | 常州新智源电子科技有限公司 | Running data acquisition system based on mobile communication public network for photovoltaic power stations |
| CN205490416U (en) * | 2016-01-15 | 2016-08-17 | 深圳市英威腾电气股份有限公司 | Dc -to -ac converter and external mutual equipment thereof |
| CN209248754U (en) * | 2018-09-13 | 2019-08-13 | 深圳益邦物联科技有限公司 | Data collector based on the communication of networking module |
| CN110417914A (en) * | 2019-08-14 | 2019-11-05 | 东莞市钜大电子有限公司 | A kind of photovoltaic power generation data acquisition gateway device |
| CN110854997A (en) * | 2019-10-23 | 2020-02-28 | 南京南瑞继保电气有限公司 | Remote online maintenance method and device for photovoltaic inverter |
| CN216981918U (en) * | 2022-03-29 | 2022-07-15 | 上海电力新能源发展有限公司 | Photovoltaic power station inverter side power control interface device |
-
2022
- 2022-10-21 CN CN202211294527.0A patent/CN115528815B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203858746U (en) * | 2014-05-15 | 2014-10-01 | 常州新智源电子科技有限公司 | Running data acquisition system based on mobile communication public network for photovoltaic power stations |
| CN205490416U (en) * | 2016-01-15 | 2016-08-17 | 深圳市英威腾电气股份有限公司 | Dc -to -ac converter and external mutual equipment thereof |
| CN209248754U (en) * | 2018-09-13 | 2019-08-13 | 深圳益邦物联科技有限公司 | Data collector based on the communication of networking module |
| CN110417914A (en) * | 2019-08-14 | 2019-11-05 | 东莞市钜大电子有限公司 | A kind of photovoltaic power generation data acquisition gateway device |
| CN110854997A (en) * | 2019-10-23 | 2020-02-28 | 南京南瑞继保电气有限公司 | Remote online maintenance method and device for photovoltaic inverter |
| CN216981918U (en) * | 2022-03-29 | 2022-07-15 | 上海电力新能源发展有限公司 | Photovoltaic power station inverter side power control interface device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115528815A (en) | 2022-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2696293C2 (en) | Telecontrol modular equipment | |
| RU2680591C2 (en) | Power supply module for modular telecontrol equipment and equipment comprising same | |
| EP3748810B1 (en) | Intelligent power distribution system and method | |
| CN103269125B (en) | Multifunctional integrated configuration platform system of secondary equipment of intelligent substation | |
| CN201029023Y (en) | Intelligent switch power source communication protocol converter | |
| CN110061318B (en) | Storage battery cabinet and control method thereof | |
| CN109633345B (en) | Secondary equipment on-line monitoring and analyzing device | |
| CN115528815B (en) | Photovoltaic inverter converter and communication proxy method | |
| CN205240980U (en) | Small -size elevator remote monitering system and failure alarm system | |
| CN211456802U (en) | Distributed protection measurement and control device | |
| CN201821164U (en) | Automatic intelligent terminal device for distribution network | |
| CN201464907U (en) | PLC control system GIS of optical fiber ring network | |
| CN203896367U (en) | Power distribution and communication integrated management system | |
| CN206422791U (en) | A kind of pattern fast switch over type network switch | |
| CN215866875U (en) | Transformer core grounding current monitoring on-site module | |
| CN212623704U (en) | Intelligent power supply control system based on mobile phone APP | |
| CN208126135U (en) | Electric power apparatus monitoring device and remote power equipment monitoring system | |
| CN203350710U (en) | Intelligent monitoring system of converter station auxiliary equipment | |
| CN208385846U (en) | Integrated ring network cabinet with DTU | |
| CN202134957U (en) | Distribution automation remote terminal | |
| CN110602656A (en) | Wireless communication device | |
| CN218514524U (en) | Multifunctional wireless gateway device | |
| CN107887982A (en) | A kind of automatic intelligent terminal device for distribution network | |
| CN211089131U (en) | Integrated power distribution system | |
| CN204243913U (en) | Distributed line feed terminals and network thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |