CN113013993A - Digital primary and secondary fusion ring net cage complete system - Google Patents
Digital primary and secondary fusion ring net cage complete system Download PDFInfo
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- CN113013993A CN113013993A CN202110449222.1A CN202110449222A CN113013993A CN 113013993 A CN113013993 A CN 113013993A CN 202110449222 A CN202110449222 A CN 202110449222A CN 113013993 A CN113013993 A CN 113013993A
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- cabinet
- net cage
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- voltage transformer
- switch
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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
- H02J13/00016—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
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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
- H02J13/00016—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
- H02J13/00017—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 using optical fiber
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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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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y04S40/124—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 wired telecommunication networks or data transmission busses
-
- 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
Abstract
The invention discloses a digital primary and secondary fusion ring net cage complete system, which comprises a ring net cage, a terminal cabinet of a power distribution station, a voltage transformer cabinet and a plurality of switch cabinets, wherein the terminal cabinet, the voltage transformer cabinet and the switch cabinets are arranged in the ring net cage; a digital substation terminal, a power supply module and a communication box are arranged in a substation terminal cabinet; the digital power distribution station terminal is in communication connection with the master station through a communication box; a voltage transformer and a sensor digitalization unit are arranged in the voltage transformer cabinet; a switch unit, a current transformer, a sensor unit and a sensor digitization unit are arranged in the switch cabinet; the sensor digitization unit converts analog signals of the sensor in the cabinet body into digital signals and uploads the signals to a digital substation terminal through communication connection; the power supply module is electrically connected with the digital power distribution station terminal, the sensor digitization unit and the switch unit. The invention can simplify wiring, save cost and improve the digitization level of the looped network box complete system.
Description
Technical Field
The invention relates to a digital primary and secondary fusion ring network box complete system, and belongs to the technical field of power distribution stations.
Background
The ring net cage is an electric device which is formed by installing high-voltage equipment in a metal or nonmetal insulating cabinet body and manufacturing an assembled interval ring net power supply unit. The core components of the transformer are a voltage transformer, a current transformer, a breaker or a load switch and the like.
The distribution substation terminal (DTU) is a distribution terminal device arranged at the ring net cage, and is used for collecting and calculating position signals, voltage, current, power, line loss and other data of the switch device, completing the opening and closing operation of the switch, identifying faults of a feeder switch and the like.
The existing one-time and two-time fusion ring net cage complete technology is that a ring net cage transmits signal quantities such as voltage, current, remote signaling, remote control and the like to a station terminal through an aerial plug cable. The standardized aerial plug connection mode is adopted, so that one-time wiring is simplified, but the following defects are overcome:
1. with the increase of the number of the feeder lines, secondary wiring is more and more complex, and the cost of aerial plug cables is higher and higher;
2. the existing ring main unit needs to be configured with an operation unit and an interval gateway, so that the system is complex and repeated, and the cost is high;
3. the hard wiring is adopted, so that the electronic transformer is easily influenced by an external electromagnetic environment, and particularly when secondary small signals of the electronic transformer are transmitted;
4. when a dehumidifier or a humiture device needs to be externally connected inside the ring main unit, the terminal of the station needs to be independently connected to the inside of the ring main unit, so that wiring in the ring main unit is disordered;
5. the hardware performance of the core controller of the terminal of the station is limited, and the new requirements of new functions which are increasing day by day cannot be met.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a digital one-time and two-time fusion ring net cage complete system which can simplify wiring and save cost.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a digital one-time and two-time fusion ring net cage complete system comprises a ring net cage, a distribution station terminal cabinet, a voltage transformer cabinet and a plurality of switch cabinets, wherein the distribution station terminal cabinet, the voltage transformer cabinet and the switch cabinets are arranged in the ring net cage;
a DDTU, a power supply module and a communication box are arranged in a terminal cabinet of the power distribution station; the DDTU is in communication connection with the master station through a communication box;
a first SDU and a voltage transformer which is in communication connection with the DDTU through the first SDU are configured in the voltage transformer cabinet;
a second SDU, a switch unit, a current transformer and a sensor unit which are in communication connection with the DDTU through the second SDU are arranged in the switch cabinet;
the power module is electrically connected with the DDTU, the first SDU, the second SDU and the switch unit.
Further, the first SDU and the second SDU have the same structure, and each of the first SDU and the second SDU comprises a first FPGA, a signal conditioning unit, an AD conversion unit, a switching power supply, and an interface circuit for receiving and/or transmitting a signal; the voltage transformer and the current transformer are connected to the first FPGA through the signal conditioning unit and the AD conversion unit; the input end of the switch power supply is electrically connected with the power supply module, one path of the output end of the switch power supply is electrically connected with the first FPGA, and the other path of the output end of the switch power supply is electrically connected with the switch unit through the outgoing loop.
Further, the interface circuit is one or more of an optical fiber, an RS485 and an RS 232.
Further, the DDTU comprises a second FPGA, a real-time controller and a communication controller; and the real-time controller is in bidirectional communication connection with the second FPGA and the communication controller respectively.
Furthermore, the real-time controller is in bidirectional communication connection with the second FPGA through a bus and in bidirectional communication connection with the communication controller through a USB.
Furthermore, the communication controller is connected with the optical communication module through a NET module and connected with the power supply module and the wireless module through a UART module; the communication controller is in signal connection with the main station through the optical communication module and the wireless module.
Furthermore, the communication controller is connected with a maintenance terminal through a UART module and used for body debugging and maintenance.
Furthermore, the sensor unit comprises a temperature and humidity sensor, a switch unit position information sensor, a switch unit control information sensor and a local release sensor.
Further, the voltage transformer comprises a power supply voltage transformer, a phase sequence voltage transformer and a zero sequence voltage transformer; the phase sequence voltage transformer and the zero sequence voltage transformer are electromagnetic voltage transformers or electronic voltage transformers.
Further, the current transformer comprises a phase sequence current transformer and a zero sequence current transformer, and the phase sequence current transformer and the zero sequence current transformer are electronic current transformers or electromagnetic current transformers.
Compared with the prior art, the invention has the following beneficial effects:
according to the digital one-time and two-time fusion ring net cage complete system, only the communication line and the power supply line are needed to be connected between the switch cabinet and the terminal cabinet of the power distribution station, compared with the existing standard aerial plug, wiring is greatly simplified, and cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of a digital once-and-twice fusion cage complete system provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of the electrical connections of a digital once-and-twice fusion cage complete system provided by an embodiment of the invention;
fig. 3 is a functional block diagram of a first SDU provided by an embodiment of the present invention;
fig. 4 is a schematic block diagram of a DDTU provided by an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1, the digital primary and secondary fusion ring net cage complete system provided by the embodiment of the present invention mainly includes a ring net cage, a terminal cabinet of a distribution substation, a voltage transformer cabinet (PT cabinet) and a plurality of switch cabinets, which are arranged in the ring net cage.
The following further explains the terminal cabinet, the voltage transformer cabinet and the switch cabinet of the power distribution station with reference to the electrical connection diagram shown in fig. 2:
a DDTU (Digital Distribution Terminal Unit), a power module and a communication box are arranged in the Terminal cabinet of the Distribution substation. An Optical communication module (Optical Network Unit, abbreviated as ONU) is installed in the communication box to provide an Optical fiber channel for the communication between the power distribution terminal and the main station; the DDTU collects external sensor data, comprises a power module, a voltage transformer (PT), a Current Transformer (CT), switch information, a temperature and humidity sensor and the like, and completes measurement and control, protection and remote transmission functions; the power module provides a working power supply for the DDTU, manages the function of a lead-acid storage battery or a super capacitor backup power supply, and simultaneously communicates with a first SDU (Sensor Digital Unit) to realize remote measurement, remote signaling and remote control of relevant information and states of the backup power supply.
The voltage transformer cabinet is internally provided with power supply, phase and zero sequence voltage transformers, wherein the phase and zero sequence voltage transformers can be electromagnetic 10KV/100V or electronic (10kV/√ 3)/(6.5V/3).
A phase sequence current transformer, a zero sequence current transformer, a switch unit, other sensor units and a second SDU are arranged in the switch cabinet, wherein the phase sequence current transformer and the zero sequence current transformer can be electromagnetic 600A/1A or electronic 600A/1V; the switch unit may be a circuit breaker or a load switch; other sensor units comprise partial discharge sensors, temperature and humidity sensors and the like; and the second SDU completes information acquisition of all sensors in the switch cabinet, transmits the information to the DDTU after information digitization, and simultaneously receives communication information of the DDTU.
As shown in fig. 3, which is a schematic block diagram of a first SDU provided in this embodiment of the present invention, since the structures and the operating principles of the first SDU and the second SDU adopted in this embodiment are completely consistent, the first SDU is taken as an example to explain:
the first SDU uses a first FPGA (Field Programmable Gate Array) as a control core, and implements a corresponding control function in a hardware programming manner, which is specifically as follows: the voltage transformer enters an AD conversion unit after being conditioned by the signal conditioning unit, the AD conversion unit converts an analog signal into a digital signal and enters a first FPGA, the first FPGA packages input information into an FT3 format (a transmission frame format of a link layer), then codes and sends the input information, and receives and decodes DDTU data; the transmitting and receiving interfaces adopt optical fibers or RS 485. The input power supply of the first SDU is provided by a power supply module in a terminal cabinet of the power distribution station, after passing through a switch power supply, one path of power supply enters the first FPGA to be used as a working power supply of the first FPGA chip, and the other path of power supply enters an open loop (DO) to be used as a control power supply of the switch unit.
Fig. 4 is a schematic block diagram of a terminal of a distribution substation provided in an embodiment of the present invention;
the DDTU mainly comprises a second FPGA, a real-time controller and a communication controller. Wherein the content of the first and second substances,
the second FPGA completes communication work with the first SDU and each second SDU, and performs data interaction with the real-time controller through a bus;
the real-time controller selects an ARM Cortex-M series processor. The real-time controller and the second FPGA carry out data interaction through a bus and carry out grouping processing on the data, wherein measurement calculation, wave recording storage and protection actions are carried out on the sampled data, if the protection outlet condition is reached, the remote control data is issued to the corresponding SDU, the remote signaling data is subjected to deflection acquisition, and the serial port data is processed; the real-time controller collects data of each sensor, uploads the data to the communication controller through the USB bus, and receives control information sent by the USB bus;
the communication controller selects an ARM Cortex-A series processor. The communication controller and the real-time controller perform data interaction through a USB bus, acquire data of each sensor, such as voltage and current effective values, switch positions, event sequence records, temperature and humidity in a cabinet, perform information interaction with a master station through an optical communication module, and provide services such as three-remote, file transmission, terminal program upgrading, terminal state monitoring and management, one-time state monitoring, peripheral equipment access, edge calculation and the like by adopting a face-to-the-Internet protocol such as MQTT (lightweight agent-based publish/subscribe message transmission protocol) and the like; the UART of the communication controller can be connected with a wireless module and is connected with the master station by utilizing a 4G/5G network; the system can also communicate with a power supply module, collect the state of a backup power supply and maintain and manage the backup power supply; and the system can be connected with a maintenance terminal, so that local debugging and maintenance of workers are facilitated.
1. The sampling and coding transmission of analog signals in the annular net cage are realized by FPGA control, and the characteristics of abundant FPGA port resources, high hardware stability and the like are fully utilized;
2. wiring is simplified, each switch cabinet is connected with a terminal cabinet of a power distribution station, only a communication line and a power supply line are needed, and compared with the existing standard aerial plug, wiring is greatly simplified, and cost is saved;
3. the communication signals are digitized, the data transmission quantity is large, the speed is high, and the environment interference is not easy to occur;
4. the real-time core and the communication core on the terminal hardware of the power distribution station are combined, the real-time data processing requirement and the information interaction function of the edge node and the main station are met, the regional autonomy is realized, the calculation burden of the main station is reduced, and a technical foundation is laid for realizing the power distribution internet of things with large-scale data access as the characteristic.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A digital one-time and two-time fusion ring net cage complete system is characterized by comprising a ring net cage, a terminal cabinet of a power distribution station, a voltage transformer cabinet and a plurality of switch cabinets, wherein the terminal cabinet, the voltage transformer cabinet and the switch cabinets are arranged in the ring net cage;
a DDTU, a power supply module and a communication box are arranged in a terminal cabinet of the power distribution station; the DDTU is in communication connection with the master station through a communication box;
a first SDU and a voltage transformer which is in communication connection with the DDTU through the first SDU are configured in the voltage transformer cabinet;
a second SDU, a switch unit, a current transformer and a sensor unit which are in communication connection with the DDTU through the second SDU are arranged in the switch cabinet;
the power module is electrically connected with the DDTU, the first SDU, the second SDU and the switch unit.
2. The digital once-and-twice fusion ring net cage complete system set according to claim 1, wherein the first SDU and the second SDU have the same structure and each comprise a first FPGA, a signal conditioning unit, an AD conversion unit, a switching power supply and an interface circuit for receiving and/or transmitting signals; the voltage transformer and the current transformer are connected to the first FPGA through the signal conditioning unit and the AD conversion unit; the input end of the switch power supply is electrically connected with the power supply module, one path of the output end of the switch power supply is electrically connected with the first FPGA, and the other path of the output end of the switch power supply is electrically connected with the switch unit through the outgoing loop.
3. The digital once-and-twice fusion loop net cage complete system set as claimed in claim 2, wherein the interface circuit is one or more of optical fiber, RS485 and RS 232.
4. The digital once-and-twice fusion ring net cage complete system set system according to claim 1, wherein the DDTU comprises a second FPGA, a real-time controller and a communication controller; and the real-time controller is in bidirectional communication connection with the second FPGA and the communication controller respectively.
5. The digital primary and secondary fusion ring net cage complete system as claimed in claim 4, wherein the real-time controller is in bidirectional communication connection with the second FPGA through a bus, and is in bidirectional communication connection with the communication controller through a USB.
6. The digital primary and secondary fusion ring NET cage complete system as claimed in claim 4, wherein the communication controller is connected with the optical communication module through a NET module, and is connected with the power supply module and the wireless module through a UART module; the communication controller is in signal connection with the main station through the optical communication module and the wireless module.
7. The digital once-and-twice fusion ring net cage complete system as set forth in claim 6, characterized in that the communication controller is further connected with a maintenance terminal through a UART module for body debugging and maintenance.
8. The digital once-and-twice fusion ring net cage complete system set according to claim 1, characterized in that the sensor unit comprises a temperature and humidity sensor, a switch unit position information sensor, a switch unit control information sensor and a local release sensor.
9. The digital once-and-twice fusion ring network box set system according to claim 1, wherein the voltage transformers comprise a supply voltage transformer, a phase sequence voltage transformer and a zero sequence voltage transformer; the phase sequence voltage transformer and the zero sequence voltage transformer are electromagnetic voltage transformers or electronic voltage transformers.
10. The digital once-and-twice fusion ring network box set system as claimed in claim 1, wherein the current transformers comprise phase sequence current transformers and zero sequence current transformers, and the phase sequence current transformers and the zero sequence current transformers are electronic current transformers or electromagnetic current transformers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110449222.1A CN113013993A (en) | 2021-04-25 | 2021-04-25 | Digital primary and secondary fusion ring net cage complete system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110449222.1A CN113013993A (en) | 2021-04-25 | 2021-04-25 | Digital primary and secondary fusion ring net cage complete system |
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| Publication Number | Publication Date |
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| CN113013993A true CN113013993A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110449222.1A Withdrawn CN113013993A (en) | 2021-04-25 | 2021-04-25 | Digital primary and secondary fusion ring net cage complete system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115914885A (en) * | 2022-11-30 | 2023-04-04 | 江苏易立电气股份有限公司 | Digital power distribution station terminal based on Manchester coding communication |
| CN116032005A (en) * | 2022-12-19 | 2023-04-28 | 东方电子股份有限公司 | Station terminal with digital architecture and fault discrimination method |
-
2021
- 2021-04-25 CN CN202110449222.1A patent/CN113013993A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115914885A (en) * | 2022-11-30 | 2023-04-04 | 江苏易立电气股份有限公司 | Digital power distribution station terminal based on Manchester coding communication |
| CN116032005A (en) * | 2022-12-19 | 2023-04-28 | 东方电子股份有限公司 | Station terminal with digital architecture and fault discrimination method |
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Application publication date: 20210622 |