CN209860668U - Intelligent operation and maintenance power distribution and utilization system based on active service management mode - Google Patents
Intelligent operation and maintenance power distribution and utilization system based on active service management mode Download PDFInfo
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- CN209860668U CN209860668U CN201920461911.2U CN201920461911U CN209860668U CN 209860668 U CN209860668 U CN 209860668U CN 201920461911 U CN201920461911 U CN 201920461911U CN 209860668 U CN209860668 U CN 209860668U
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Abstract
An intelligent operation and maintenance power distribution and utilization system based on an active service management mode comprises: the system comprises an information concentrator (1), a total residual current protection circuit breaker (2), a middle-level residual current protection circuit breaker (4), an intelligent electric meter (6) and a final-level residual current protection circuit breaker (8), wherein the total residual current protection circuit breaker (2) can be embedded into an HPLC (high performance liquid chromatography) single-phase carrier module, the HPLC single-phase carrier module can be used in a plug-and-play mode and is used as a sub-node of an HPLC network, the hierarchical relation of the HPLC single-phase carrier module in the whole HPLC network can be sensed by a route, and therefore the network topology of the whole HPLC can be; the medium-level residual current protection circuit breaker (4) comprises a wireless and carrier dual-mode communication module (5), data information from the medium-level residual current protection circuit breaker (4) to the information concentrator (1) is transmitted by carrier communication, and data information from the final-level residual current protection circuit breaker (8) to the medium-level residual current protection circuit breaker (4) is transmitted by wireless communication.
Description
Technical Field
The utility model relates to a power equipment technical field, specifically speaking relate to an intelligence fortune dimension adapted electric system based on initiative service management mode.
Background
When traditional adapted electric technical equipment breaks down, generally manual inspection and trouble back passive mode maintenance are, and this kind of problem solution mode response is slower, inefficiency, waste time and energy, and has the condition of wrong report, failing to report easily. Even the distribution mode of the novel circuit breaker that possesses communication function with 485 communication network deployment has appeared on the market, nevertheless often need a large amount of loaded down with trivial details wirings in a table case, is difficult for the investigation when the problem appears, the later maintenance of also being not convenient for.
Disclosure of Invention
Based on the above background, the utility model provides an intelligent operation and maintenance distribution system based on an active service management mode, which can effectively solve the above problems,
the above object of the present invention can be achieved by the following technical solutions:
an intelligent operation and maintenance power distribution and utilization system based on an active service management mode comprises: the system comprises an information concentrator, a total residual current protection circuit breaker, a middle-level residual current protection circuit breaker, a smart meter and a last-level residual current protection circuit breaker, wherein the total residual current protection circuit breaker comprises an HPLC (high performance liquid chromatography) single-phase carrier module which can be used as a sub-node of an HPLC (high performance liquid chromatography) network, and the concentrator can acquire the hierarchical relation of the HPLC single-phase carrier module in the HPLC network and draw the network topology of the HPLC network;
the medium-level residual current protection circuit breaker comprises a wireless and carrier dual-mode communication module, data information between the medium-level residual current protection circuit breaker and the information concentrator is transmitted in a carrier communication mode in the wireless and carrier dual-mode communication module, and data information between the final-level residual current protection circuit breaker and the medium-level residual current protection circuit breaker is transmitted in a wireless communication mode in the wireless and carrier dual-mode communication module;
the last-stage residual current protection circuit breaker collects and processes residual current information of a user side, and the residual current information is transmitted to the information concentrator through the middle-stage residual current protection circuit breaker in sequence through wireless communication and carrier communication;
the information concentrator can transmit the received information to an external control center, and can transmit an instruction from the external control center to the final-stage residual current protection circuit breaker to set a residual current protection threshold value of the final-stage residual current protection circuit breaker.
Preferably, the HPLC single-phase carrier module may be disposed inside the total residual current protection circuit breaker, or may be disposed outside the total residual current protection circuit breaker, and is connected to the total residual current protection circuit breaker through a port disposed on the total residual current protection circuit breaker.
Preferably, the external control center can remotely upgrade the final-stage residual current protection circuit breaker.
Preferably, the information transmission between the final-stage residual current protection circuit breaker and the middle-stage residual current protection circuit breaker can be realized by any wireless communication mode of bluetooth, WiFi, 2.4G, 433M, GPRS, LORA and Zigbee.
Preferably, the total residual current protection circuit breaker performs information transmission with the medium-level residual current protection circuit breaker and the information concentrator respectively in a carrier communication mode.
Preferably, the information concentrator includes a power line carrier communication chip, and the information concentrator is connected with the total residual current protection circuit breaker through the power line carrier communication chip and communicates with the total residual current protection circuit breaker.
Preferably, the smart electric meter comprises a power line carrier communication chip, and the smart electric meter is connected with the total residual current protection circuit breaker through the power line carrier communication chip and communicates with the total residual current protection circuit breaker.
Preferably, the final-stage residual current protection circuit breaker comprises a wireless slave module, and the final-stage residual current protection circuit breaker can acquire data of load current and residual current and perform information transmission and return with a wireless and carrier dual-mode communication module in the intermediate-stage residual current protection circuit breaker in a wireless communication manner through the wireless slave module.
Preferably, the wireless slave module may be one of bluetooth, WiFi, 2.4G, 433M, GPRS, LORA, and Zigbee modules.
Preferably, the external control center can remotely read or modify the parameter value of the final residual current protection circuit breaker.
Preferably, the last-stage residual current protection circuit breaker comprises a timer, and the timer can realize perpetual calendar soft timing and record fault timestamp information.
Preferably, the last-stage residual current protection circuit breaker can record two periods before and after a wave fault point and transmit the two periods to the external control center, and the external control center can judge whether a fault occurs and analyze the fault reason according to the data of the periodic waveform.
Preferably, the final-stage residual current protection circuit breaker is provided with a temperature chip or a temperature sensor.
Preferably, the final residual current protection circuit breaker can automatically trip when the residual current in the line exceeds a threshold value, is overloaded or is short-circuited.
Preferably, the medium-level residual current protection circuit breaker performs current and residual current detection, and wireless networking is realized through the wireless and carrier dual-mode communication module.
Preferably, the information concentrator may sequentially transmit the broadcast timing or parameter modification command sent by the external control center to the final-stage residual current protection circuit breaker for broadcast timing or parameter modification through the total residual current protection circuit breaker and the intermediate-stage residual current protection circuit breaker.
Preferably, the final-stage residual current protection circuit breaker is in non-active protection and active service, and intelligent control is realized by the information concentrator.
Preferably, the medium-level residual current protection circuit breaker is in non-active protection and active service, and intelligent control is realized by the information concentrator.
Preferably, the utility model also provides a method for initiatively obtaining operating parameters such as residual current and load current and reporting external control center and carrying out data analysis, include:
step S1: the wireless and carrier dual-mode communication module contained in the middle-level residual current protection circuit breaker sequentially reads residual current and load current related operation parameters of the last-level residual current protection circuit breaker or the middle-level residual current protection circuit breaker in a supported wireless communication or serial polling mode;
step S2: the corresponding final-stage residual current protection circuit breaker or the middle-stage residual current protection circuit breaker adopts a hardware detection circuit and software sampling and algorithm to measure and obtain the parameters;
step S3: the last-stage residual current protection circuit breaker or the middle-stage residual current protection circuit breaker transmits the parameters back to the dual-mode communication module in a wireless or serial mode;
step S4: the dual-mode communication module is transmitted to an HPLC single-phase carrier module of a total residual current protection circuit breaker in the transformer area voltage distribution box in a high-speed power carrier (HPLC) mode, and then transmitted to the concentrator, and further transmitted to an external control center;
step S5: and the external control center intelligently analyzes the background software according to the reported parameter data and remotely controls the running state of the residual current protection circuit breaker.
The faults can be found in time and processed immediately through the steps, a large amount of manpower and material resources are saved, and the intelligent and efficient effects are achieved; in addition, the wireless networking mode is used, so that complicated wiring and later maintenance difficulty are avoided.
The utility model has the advantages as follows:
the intelligent operation and maintenance power distribution and utilization system based on the active service management mode solves the problems, the active service management mode is characterized in that all devices in a low-voltage distribution area are interconnected, data man-machine interaction is realized, the state is comprehensively sensed, information is efficiently processed, and a ubiquitous Internet of things which is convenient and flexible to use is realized. And meanwhile, load monitoring is carried out, and household electricity utilization intellectualization is realized.
Simultaneously, install the middle-level residual current protection circuit breaker who contains bimodulus communication module in this distribution system's the table case, bimodulus communication module realizes the wireless communication function who changes the power carrier through master control MCU and power carrier chip, bimodulus communication module passes through 15 last-level residual current protection circuit breakers at most of bluetooth connection, connect 1 middle-level residual current protection circuit breaker through serial ports UART, the circuit breaker that corresponds passes back to bimodulus communication module with above-mentioned parameter through wireless or serial ports mode, bimodulus communication module passes through total residual current protection circuit breaker in the power carrier HPLC mode reaches platform district voltage distribution box again, and then passes back external control center, supply background software to carry out intelligent analysis, thereby the puzzlement of loaded down with trivial details wiring has been avoided, and the system power consumption is lower, and the maintenance is convenient.
The active first-aid repair service can integrate service flow and data flow of power customers, realize real-time online monitoring of low-voltage fault information of each level, quickly position a power failure range, actively report the power failure information before customer perception, support rapid first-aid repair and reliability analysis of low-voltage faults, shorten the time for power restoration, and improve the active service capability of power supply.
The active first-aid repair service can simultaneously carry out load monitoring, control the power load, carry out remote reminding and automatic power-off protection on overloaded users, and realize household power consumption intellectualization.
The customized APP push service applies an HPLC high-speed carrier data acquisition technology, acquires voltage, current and power data of low-voltage electricity utilization customers at high density, carries out big data comprehensive analysis, analyzes electricity utilization characteristics of the low-voltage users, provides safe electricity utilization reminding for overload electricity utilization customers, provides economic electricity utilization suggestions for peak-valley electricity price customers, provides electricity utilization habit analysis for customers with doubts of useful electricity, provides personalized service for different electricity utilization customer groups, and meets the requirements of more customer application scenes.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is the utility model discloses a distribution component system block diagram of intelligence fortune dimension distribution power distribution system.
Fig. 2 is the utility model discloses a user side distribution component system flow of intelligence fortune dimension distribution power distribution system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, as an exemplary embodiment, the power distribution system includes: the system comprises an information concentrator 1, a total residual current protection circuit breaker 2, a middle-level residual current protection circuit breaker 4, a smart meter 6 and a last-level residual current protection circuit breaker 8, wherein the total residual current protection circuit breaker 2 comprises an HPLC (high performance liquid chromatography) single-phase carrier module 3, the HPLC single-phase carrier module 3 can be used as a child node of an HPLC (high performance liquid chromatography) network, and the concentrator 1 can acquire the hierarchical relation of the HPLC single-phase carrier module 3 in the HPLC network and draw the network topology of the HPLC network; the HPLC single-phase carrier module 3 can be directly arranged inside the total residual current protection circuit breaker 2, and also can be arranged outside the total residual current protection circuit breaker 2, and a connection port is arranged on the total residual current protection circuit breaker 2, so that the HPLC single-phase carrier module 3 can be embedded into the total residual current protection circuit breaker 2 through the connection port, and can be used in a plug-and-play manner, and is convenient to replace. The total residual current protection circuit breaker 2 is in information transmission with the medium-level residual current protection circuit breaker 4 and the information concentrator 1 through the HPLC single-phase carrier module 3 in a carrier communication mode.
The medium-level residual current protection circuit breaker 4 comprises a wireless and carrier dual-mode communication module 5, data information between the medium-level residual current protection circuit breaker 4 and the information concentrator 1 is transmitted in a carrier communication mode in the wireless and carrier dual-mode communication module 5, the wireless and carrier dual-mode communication module 5 has two communication modes of wireless communication and carrier communication at the same time, and data information between the final-level residual current protection circuit breaker 8 and the medium-level residual current protection circuit breaker 4 is transmitted in a wireless communication mode in the wireless and carrier dual-mode communication module 5; the wireless communication mode comprises any one of the modes of Bluetooth, WiFi, 2.4G, 433M, GPRS, LORA, Zigbee and the like, one wireless and carrier dual-mode communication module 5 can be correspondingly connected with 1 middle-stage residual current protection circuit breaker and a plurality of final-stage residual current protection circuit breakers, and preferably, the number of the final-stage residual current protection circuit breakers is not more than 15. The medium-level residual current protection circuit breaker 4 can detect current and residual current, and wireless networking is realized through the wireless and carrier dual-mode communication module 5.
The final-stage residual current protection circuit breaker (8) comprises a master control MCU and hardware functional sub-modules, wherein the master control MCU is a core device of the circuit breaker and is connected with the hardware sub-modules through IO (input output), so that basic hardware functions and upper-layer software functions are realized. The last-stage residual current protection circuit breaker 4 collects and processes residual current information of a user side, the residual current information is transmitted to the information concentrator 1 through the middle-stage residual current protection circuit breaker 4 through wireless communication and carrier communication in sequence, the information concentrator 1 can transmit the received information to an external control center and can send an instruction from the external control center to the last-stage residual current protection circuit breaker 8, and the threshold value and the delay time of residual current protection of the last-stage residual current protection circuit breaker 8 are set. Specifically, the information concentrator 1 includes a power line carrier communication chip, and the information concentrator 1 is connected with the total residual current protection circuit breaker 2 through the power line carrier communication chip and communicates with the total residual current protection circuit breaker.
The external control center can perform intelligent analysis on the received data, including the state of the circuit breaker, residual current analysis, whether the circuit is in fault, fault reasons and the like, and judge whether an instruction needs to be sent according to the analysis result, and in addition, the external control center can also perform remote upgrade on the final-stage residual current protection circuit breaker 8.
The intelligent electric meter 6 is respectively connected with the middle-stage residual current protection circuit breaker 4 and the last-stage residual current protection circuit breaker 8, the intelligent electric meter 6 comprises a power carrier communication chip, and the intelligent electric meter 6 is connected with the total residual current protection circuit breaker and communicates with the power carrier communication chip.
In a preferred embodiment, the last-stage residual current protection circuit breaker 8 includes a wireless slave module 7, the last-stage residual current protection circuit breaker 8 can obtain data of load current and residual current, and send and return information to and from the wireless and carrier dual-mode communication module 5 in the middle-stage residual current protection circuit breaker 4 in a wireless communication manner through the wireless slave module 7, and the wireless slave module 7 may be bluetooth, WiFi, 2.4G, 433M, GPRS, LORA, Zigbee
One of the modules, the external control centre can remotely read or modify the parameter values of the final residual current circuit breaker 8.
In a preferred embodiment, a timer is further disposed in the last-stage residual current protection circuit breaker 8, a perpetual calendar soft timer can be implemented through the timer, and fault timestamp information can be recorded, and the information concentrator 1 can transmit a broadcast timing or parameter modification instruction sent by the external control center to the last-stage residual current protection circuit breaker 8 through the total residual current protection circuit breaker 2 and the middle-stage residual current protection circuit breaker 4 in sequence for broadcast timing or parameter modification, so as to ensure that the system time of the last-stage residual current protection circuit breaker 8 is consistent with the standard time of the external control center.
In a preferred embodiment, when a fault occurs in the line, the final stage residual current protection circuit breaker 8 may record waveforms of two periods before and after the fault, and transmit the waveforms to the external control center, the external control center may analyze the periodic waveforms, and determine whether the fault occurs and the reason for the fault is analyzed, and in addition, when the residual current in the line exceeds a threshold, is overloaded, or is short-circuited, the final stage residual current protection circuit breaker 8 may automatically trip, thereby implementing active service.
In a preferred embodiment, a temperature chip or a temperature sensor is further disposed in the final-stage residual current protection circuit breaker 8, so that real-time collection of the internal temperature of the circuit breaker can be achieved, collected internal temperature data of the circuit breaker can be transmitted back to an external control center, and the external control center can analyze the internal temperature data and the loop current data of the circuit breaker to determine whether a fault that the internal temperature of the circuit breaker is too high due to the virtual connection of a main loop circuit and a mechanical fault on the site and then the circuit breaker is damaged exists.
The external control center can decide whether to turn on or turn off the residual current protection function according to the requirement, when the residual current protection function is turned on, if the residual current appears in the circuit at the moment, the final-stage residual current protection circuit breaker 8 can turn on the protection function to trip; however, when the residual current protection function is turned off, even if the final-stage residual current protection circuit breaker 8 detects that a residual current occurs in the current line, the protection function cannot be started, so that the final-stage residual current protection circuit breaker 8 is inactive protection, and similarly, the intermediate-stage residual current protection circuit breaker 4 is inactive protection and active service, and the information concentrator 1 realizes intelligent control.
The utility model also provides a method of initiatively acquireing operating parameter such as residual current and load current and reporting control center and carrying out data analysis, include:
step S1: the wireless and carrier dual-mode communication module contained in the middle-level residual current protection circuit breaker sequentially reads residual current and load current related operation parameters of the last-level residual current protection circuit breaker or the middle-level residual current protection circuit breaker in a supported wireless communication or serial polling mode;
step S2: the corresponding final-stage residual current protection circuit breaker or the middle-stage residual current protection circuit breaker adopts a hardware detection circuit and software sampling and algorithm to measure and obtain the parameters;
step S3: the last-stage residual current protection circuit breaker or the middle-stage residual current protection circuit breaker transmits the parameters back to the dual-mode communication module in a wireless or serial mode;
step S4: the dual-mode communication module is transmitted to an HPLC single-phase carrier module of a total residual current protection circuit breaker in the transformer area voltage distribution box in a high-speed power carrier (HPLC) mode, and then transmitted to the concentrator, and further transmitted to an external control center;
step S5: and the external control center intelligently analyzes the background software according to the reported parameter data and remotely controls the running state of the residual current protection circuit breaker.
The faults can be found in time and processed immediately through the steps, a large amount of manpower and material resources are saved, and the intelligent and efficient effects are achieved; in addition, the wireless networking mode is used, so that complicated wiring and later maintenance difficulty are avoided.
The above is merely a preferred embodiment of the present invention, and those skilled in the art can make various changes or modifications to the embodiment of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.
Claims (18)
1. An intelligent operation and maintenance power distribution and utilization system based on an active service management mode comprises: an information concentrator (1), a total residual current protection circuit breaker (2), a middle-level residual current protection circuit breaker (4), an intelligent ammeter (6) and a final-level residual current protection circuit breaker (8),
the total residual current protection circuit breaker (2) comprises an HPLC single-phase carrier module (3), the HPLC single-phase carrier module (3) can be used as a sub-node of an HPLC network, and the concentrator (1) can acquire the hierarchical relation of the HPLC single-phase carrier module (3) in the HPLC network and draw the network topology of the HPLC network;
the medium-level residual current protection circuit breaker (4) comprises a wireless and carrier dual-mode communication module (5), data information between the medium-level residual current protection circuit breaker (4) and the information concentrator (1) is transmitted in a carrier communication mode in the wireless and carrier dual-mode communication module (5), and data information between the final-level residual current protection circuit breaker (8) and the medium-level residual current protection circuit breaker (4) is transmitted in a wireless communication mode in the wireless and carrier dual-mode communication module (5);
the last-stage residual current protection circuit breaker (8) collects and processes residual current information of a user side, and the residual current information is transmitted to the information concentrator (1) through the middle-stage residual current protection circuit breaker (4) through wireless communication and carrier communication in sequence;
the information concentrator (1) can transmit the received information to an external control center, and can transmit an instruction from the external control center to the final-stage residual current protection circuit breaker (8), and sets the residual current protection threshold value and the delay time of the final-stage residual current protection circuit breaker (8).
2. The intelligent operation and maintenance distribution and power utilization system based on the active service management mode as claimed in claim 1, wherein the HPLC single-phase carrier module can be disposed inside the total residual current protection circuit breaker (2), or can be disposed outside the total residual current protection circuit breaker (2), and is connected to the total residual current protection circuit breaker (2) through a port disposed on the total residual current protection circuit breaker (2).
3. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode as claimed in claim 1, wherein the external control center can remotely upgrade the final stage residual current protection circuit breaker (8).
4. The intelligent operation and maintenance power distribution and utilization system based on the active service management mode as claimed in claim 1, wherein the information transmission between the final stage residual current protection circuit breaker (8) and the middle stage residual current protection circuit breaker (4) can be implemented by any one of bluetooth, WiFi, 2.4G, 433M, GPRS, LORA, and Zigbee wireless communication.
5. The intelligent operation and maintenance power distribution and utilization system based on the active service management mode as claimed in claim 1, wherein the total residual current protection circuit breaker (2) performs information transmission with the medium-level residual current protection circuit breaker (4) and the information concentrator (1) respectively through a carrier communication mode.
6. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode according to claim 1, wherein the information concentrator (1) comprises a power carrier communication chip, and the information concentrator (1) is connected with the total residual current protection circuit breaker (2) through the power carrier communication chip and communicates with the total residual current protection circuit breaker.
7. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode as claimed in claim 1, wherein the intelligent electric meter (6) comprises a power carrier communication chip, and the intelligent electric meter (6) is connected with the total residual current protection circuit breaker (2) through the power carrier communication chip and communicates with the total residual current protection circuit breaker.
8. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode according to claim 1, wherein the final stage residual current protection circuit breaker (8) comprises a wireless slave module (7), and the final stage residual current protection circuit breaker (8) can obtain data of load current and residual current and send and return information to and from the wireless and carrier dual-mode communication module (5) in the intermediate stage residual current protection circuit breaker (4) in a wireless communication manner through the wireless slave module (7).
9. The intelligent operation and maintenance power distribution and distribution system based on active service management mode according to claim 8, wherein the wireless slave module (7) can be one of bluetooth, WiFi, 2.4G, 433M, GPRS, LORA, Zigbee modules.
10. The intelligent operation and maintenance distribution system based on active service management mode according to claim 8, characterized in that the external control center can remotely read or modify the parameter values of the final stage residual current protection circuit breaker (8).
11. The intelligent operation and maintenance distribution system based on active service management mode according to claim 8, characterized in that the final residual current protection circuit breaker (8) comprises a timer, through which perpetual calendar soft timing can be realized and fault timestamp information can be recorded.
12. The intelligent operation and maintenance power distribution and distribution system based on the active service management mode as claimed in claim 8, wherein the final-stage residual current protection circuit breaker (8) can record waveforms of two periods before and after a fault point and transmit the waveforms to the external control center, and the external control center can judge whether a fault occurs and analyze the cause of the fault according to the data of the waveforms of the periods.
13. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode according to claim 8, characterized in that the final stage residual current protection circuit breaker (8) is provided with a temperature chip or a temperature sensor.
14. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode according to claim 8, characterized in that the final stage residual current protection circuit breaker (8) can trip automatically when the residual current in the line exceeds a threshold value, overload or short circuit.
15. The intelligent operation and maintenance distribution system based on the active service management mode according to claim 1, wherein the medium-level residual current protection circuit breaker (4) performs current and residual current detection, and realizes wireless networking through the wireless and carrier dual-mode communication module (5).
16. The intelligent operation and maintenance power distribution and utilization system based on the active service management mode as claimed in claim 1, wherein the information concentrator (1) can transmit the broadcast timing or parameter modification command sent by the external control center to the final residual current protection circuit breaker (8) for broadcast timing or parameter modification through the total residual current protection circuit breaker (2) and the intermediate residual current protection circuit breaker (4) in sequence.
17. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode according to claim 7, wherein the final-stage residual current protection circuit breaker (8) is an inactive protection, active service, and intelligent control is realized by the information concentrator (1).
18. The intelligent operation and maintenance distribution and power distribution system based on the active service management mode as claimed in claim 15, wherein the medium-level residual current protection circuit breaker (4) is an inactive protection, active service, and intelligent control is realized by the information concentrator (1).
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| CN109818423A (en) * | 2019-04-08 | 2019-05-28 | 国网福建省电力有限公司 | A kind of intelligent O&M distribution system based on management mode of taking the initiative in offering a hand |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109818423A (en) * | 2019-04-08 | 2019-05-28 | 国网福建省电力有限公司 | A kind of intelligent O&M distribution system based on management mode of taking the initiative in offering a hand |
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