CN113064004A - Automatic identification system and method for power circuit - Google Patents
Automatic identification system and method for power circuit Download PDFInfo
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- CN113064004A CN113064004A CN202110299871.8A CN202110299871A CN113064004A CN 113064004 A CN113064004 A CN 113064004A CN 202110299871 A CN202110299871 A CN 202110299871A CN 113064004 A CN113064004 A CN 113064004A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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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
- H02J13/00007—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- 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
- Y04S40/121—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 the power network as support for the transmission
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Abstract
The invention belongs to the technical field of power line identification, and discloses a power line automatic identification system and a power line automatic identification method, wherein at least one supply and demand area is formed in a power line, and each supply and demand area comprises an upper power supply node and a plurality of lower power utilization nodes correspondingly connected with the upper power supply node; in an automatic identification system comprising: the metering device is arranged at each node in the power utilization line and is used for metering power utilization information at each node; the identification device is matched with the metering device and is used for identifying the corresponding relation between the upper power supply node and the lower power supply node; the cloud server is in communication connection with the metering device and the recognition device and performs data processing according to the corresponding relation recognized by the recognition device and the electricity utilization information metered by the metering device; in summary, the present invention can realize the automatic identification of the whole used electric line when the upper power supply node is switched.
Description
Technical Field
The invention belongs to the technical field of power circuit identification, and particularly relates to a power circuit automatic identification system and a power circuit automatic identification method.
Background
Along with city construction and smart power grids's continuous development for whole city electric wire netting forms the structural condition of subregion formula mostly, and whole electric wire netting includes a plurality of power supply platform districts promptly, and a power supply platform district includes a platform district power supply end and a plurality of power consumption node.
However, in the actual operation process of the power grid, the actual power supply transformer area is often changed due to the switching of the power supply end transformer, and the change is difficult to be recognized by the power supply enterprise in time, so that the problem of inaccurate area division of the power utilization line in the power grid exists, and the accurate collection of the power utilization data in each area and the accurate analysis of the power utilization loss of the power supply enterprise are further influenced.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide an automatic power line identification system and method.
In order to achieve the purpose, the invention provides the following technical scheme:
an automatic identification system for power utilization circuits is characterized in that at least one supply and demand area is formed in a power utilization circuit, and each supply and demand area comprises a higher-level power supply node and a plurality of lower-level power utilization nodes correspondingly connected with the higher-level power supply node; in an automatic identification system comprising:
the metering device is arranged at each node in the power utilization line and is used for metering power utilization information at each node;
the identification device is matched with the metering device and is used for identifying the corresponding relation between the upper power supply node and the lower power utilization node;
the cloud server is in communication connection with the metering device and the recognition device and performs data processing according to the corresponding relation recognized by the recognition device and the electricity utilization information metered by the metering device;
wherein:
the identification device comprises an identification module arranged at a superior power supply node and an identification module arranged at a subordinate power utilization node; and the identification module in the same supply and demand area can execute communication connection, and the identification device identifies the corresponding upper and lower level correspondence between the corresponding upper power supply node and the lower power utilization node according to the communication connection.
Preferably, each of the metering devices comprises:
the information acquisition module is used for acquiring the power utilization information at each node;
and the master control metering module is used for metering the power consumption or the power supply quantity of each node according to the power consumption information acquired by the information acquisition module.
Preferably, the cloud server includes:
the storage module is used for storing supply and demand areas in the power utilization line and upper-level power supply nodes and lower-level power utilization nodes in each supply and demand area;
the updating metering module is used for executing the updating of the supply and demand area in the storage module according to the corresponding relation identified by the identification device; and the difference between the power supply amount of the upper-level power supply node in the area and the sum of the power consumption amounts of the corresponding plurality of lower-level power consumption nodes is measured according to the updated supply and demand area.
Preferably, the information acquisition module includes:
the current acquisition unit is used for acquiring current information at the corresponding node;
the voltage acquisition unit is used for acquiring voltage information at the corresponding node;
and the signal processing unit is used for converting the acquired current information and voltage information into digital signals and transmitting the digital signals to the main control metering module.
Preferably, the metering device adopts a single-item metering device or a three-item metering device, and: in the single metering device, the information acquisition module comprises a group of current acquisition units, voltage acquisition units and signal processing units which are matched with each other; in the three metering devices, the information acquisition module comprises three groups of current acquisition units, voltage acquisition units and signal processing units which are matched with each other.
Preferably, in the identification device: and the identification module are in communication connection through broadband carrier signals.
Preferably, the identification module includes:
the broadband carrier communication unit is used for sequentially transmitting broadband carrier command signals to all the identification modules in the power utilization line; the broadband carrier feedback module is also used for receiving a returned broadband carrier feedback signal from the part identification module;
and the master control identification unit is used for identifying the lower-level electricity utilization node corresponding to the identification module returning the broadband carrier feedback signal and forming the upper-level and lower-level corresponding relation between the current upper-level power supply node and the identified lower-level electricity utilization node.
Preferably, the identification module includes: and the broadband carrier response unit is used for generating and returning a broadband carrier feedback signal in the original path when receiving the broadband carrier instruction signal.
An automatic identification method for power utilization circuits is characterized in that at least one supply and demand area is formed in a power utilization circuit, and each supply and demand area comprises a higher-level power supply node and a plurality of lower-level power utilization nodes correspondingly connected with the higher-level power supply node; the automatic identification method comprises the following steps:
in the power utilization line, a target upper power supply node sequentially sends command signals to all lower power utilization nodes;
the lower-level power utilization node which can be in communication connection with the target upper-level power supply node receives the instruction signal and returns a feedback signal to the target upper-level power supply node;
constructing a target supply and demand area according to the feedback signal, wherein the target supply and demand area comprises a target upper-level power supply node and a lower-level power utilization node corresponding to the feedback signal;
measuring the power supply amount of a target upper-level power supply node in a target supply and demand area and the total power consumption amount of a corresponding lower-level power consumption node in the target supply and demand area;
and calculating the difference between the power supply amount and the total power consumption amount.
Preferably, the instruction signal is a broadband carrier instruction signal, and the feedback signal is a broadband carrier feedback signal.
Compared with the prior art, the invention has the following beneficial effects:
according to the automatic identification system for the power circuit, provided by the invention, the identification module is arranged at the upper-level power supply node (power supply end transformer), the identification module is arranged at the lower-level power utilization node, the identification module and the identification module are in communication connection through a broadband carrier technology, and broadband carrier signals can be transmitted only on the same line, so that the upper-level power supply node and the lower-level power utilization node which are in a mutually connected state can be effectively identified, and further, when the upper-level power supply node (power supply end transformer) is switched, the automatic identification of the whole power circuit can be effectively realized.
In conclusion, the accuracy of the division of the power utilization station areas in the power grid is ensured; and each node of the power circuit is also correspondingly provided with a power consumption metering device, so that accurate collection of the power consumption of each distribution area is realized, and accurate analysis of the power consumption loss in each distribution area is also realized.
Drawings
FIG. 1 is a schematic diagram of an automatic identification system according to the present invention;
FIG. 2 is a schematic structural diagram of a metering device in the automatic identification system according to the present invention;
FIG. 3 is a schematic structural diagram of a recognition device in the automatic recognition system according to the present invention;
fig. 4 is a schematic structural diagram of a cloud server in the automatic identification system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The embodiment of the invention provides an automatic power line identification system;
at least one supply and demand area is formed in a power utilization circuit, and each supply and demand area comprises an upper power supply node and a plurality of lower power utilization nodes correspondingly connected with the upper power supply node. Specifically, referring to fig. 1, an upper power supply node a and a lower power utilization node B in a supply and demand area are shown in the figure. The upper-level power supply node is applied to an actual power grid and is a power supply end transformer.
Which in an automatic identification system comprises:
the metering device 10 is installed at each node in the electric line, and the metering device 10 is used for metering the electricity utilization information at each node;
the identification device 20 is matched with the metering device 10, and the identification device 20 is used for identifying the corresponding relation between the upper power supply node and the lower power supply node;
and a cloud server 30 connected to the metering device 10 and the recognition device 20 in a communication manner, wherein the cloud server 30 performs data processing based on the correspondence relationship recognized by the recognition device 20 and the electricity consumption information metered by the metering device 10.
Specifically, referring to the above-mentioned metering devices 10 and continuing to refer to fig. 2, each of the metering devices 10 includes:
the information acquisition module 11 is used for acquiring power utilization information at each node;
and the main control metering module 12 is used for metering the electricity consumption or the power supply quantity at each node according to the electricity consumption information acquired by the information acquisition module 11.
Further, as can be seen from the figure, the information acquisition module 11 includes:
a current collecting unit 111 for collecting current information at the corresponding node;
a voltage collecting unit 112 for collecting voltage information at the corresponding node;
and the signal processing unit 113 is configured to convert the acquired current information and voltage information into digital signals, and transmit the digital signals to the main control metering module 12.
Specifically, referring to the above-mentioned identification apparatus 20, please refer to fig. 3, wherein the identification apparatus 20 includes:
an identification module 21 installed at a higher power supply node and an identification module 22 installed at a lower power utilization node; wherein: the identification module 21 and the identification module 22 in the same supply and demand area can perform communication connection, and the identification device 20 identifies the superior and inferior correspondence between the corresponding superior power supply node and the inferior power utilization node according to the communication connection.
Further, the identification module 21 and the identification module 22 are connected in communication through a broadband carrier signal.
Furthermore, as can be seen from the figure, the identification module 21 includes a broadband carrier communication unit 211 and a master identification unit 212; the identification module 22 includes a broadband carrier response unit 221; wherein:
the broadband carrier communication unit 211 is configured to sequentially transmit a broadband carrier instruction signal to all the identification modules 22 in the power consumption line; and is also used for receiving a returned broadband carrier feedback signal from the part identification module 22;
the main control identification unit 212 is configured to identify a lower-level power utilization node corresponding to the identification module 22 that returns the broadband carrier feedback signal, and form a superior-inferior correspondence between a current superior power supply node and the identified lower-level power utilization node;
the wideband carrier response unit 221 is configured to generate and return a wideband carrier feedback signal in the original path when receiving the wideband carrier instruction signal.
Specifically, as to the cloud server 30, please refer to fig. 4, the cloud server 30 includes:
a storage module 31 for storing supply and demand areas in the power consumption line, and an upper power supply node and a lower power supply node in each supply and demand area;
an update metering module 32, configured to perform an update of the supply and demand area in the storage module 31 according to the correspondence identified by the identification device 20; and the difference between the power supply amount of the upper-level power supply node in the area and the sum of the power consumption amounts of the corresponding plurality of lower-level power consumption nodes is measured according to the updated supply and demand area.
In addition, the metering device 10 is a single-item metering device or a three-item metering device, specifically:
in the single metering device, the information acquisition module 11 comprises a group of current acquisition unit 111, voltage acquisition unit 112 and signal processing unit 113 which are matched with each other;
in the three metering devices, the information acquisition module 11 includes three sets of current acquisition units 111, voltage acquisition units 112 and signal processing units 113 which are matched with each other.
Therefore, the invention can be effectively applied to single-term circuits or three-term single-way circuits.
Example two
Based on the automatic power line identification system provided in the first embodiment, the embodiment of the present invention further provides an automatic power line identification method, which specifically includes the following steps:
s1, automatically identifying the superior and inferior structure relationship of the power line, and accurately dividing supply and demand areas based on the superior and inferior structure relationship:
on the basis of a target upper power supply node A, in the power consumption line, sequentially transmitting broadband carrier command signals to all the identification modules 22 in the power consumption line on the basis of the broadband carrier communication unit 211 in the upper power supply node A;
the broadband carrier response unit 221 in the lower-level power utilization node connected with the upper-level power supply node a receives the broadband carrier command signal, generates a broadband carrier feedback signal based on the corresponding broadband carrier response unit 221, and returns the broadband carrier feedback signal to the upper-level power supply node a;
the upper power supply node a receives the broadband carrier feedback signal, and identifies a lower power utilization node corresponding to the broadband carrier feedback signal based on the master control identification unit 212, so that correspondence between the upper power supply node a and the identified lower power utilization node is realized, and a suitable supply and demand area is accurately divided.
For example, if the upper power supply node a is connected to the lower power node B/C/D, the broadband carrier command signal is received by the broadband carrier response unit 221 corresponding to the B/C/D, and the corresponding finally divided supply and demand area includes the upper power supply node a and the lower power node B/C/D.
For another example, if the upper power supply node a is switched and then connected to the lower power node B/C/E, the wideband carrier command signal is received by the wideband carrier response unit 221 corresponding to B/C/E, the wideband carrier response unit 221 corresponding to D cannot receive the wideband carrier command signal, and the corresponding finally divided supply and demand area includes the upper power supply node a and the lower power node B/C/E.
To sum up, the present invention realizes the identification of the switching of the superior power supply node (power supply end transformer) by the broadband carrier technology, and the specific principle is as follows: the wideband carrier signal can only be transmitted on the same line, and therefore, after the wideband carrier communication unit 211 transmits the wideband carrier command signal, it can only be received by the wideband carrier response unit 221 connected thereto. Therefore, after the upper power supply node is switched, the lower power utilization node connected with the upper power supply node is correspondingly changed, so that the connection structure between the identification module 21 and the identification module 22 is changed, and the connection state of each upper power supply node and each lower power utilization node in the current power utilization line can be accurately known based on the connection state according to the broadband carrier feedback signal returned by the identification module 22, so that the accurate identification effect is achieved.
S2, automatically identifying the power utilization information in each supply and demand area:
in a supply and demand area established as described above
Collecting power supply current through a current collecting unit 111 at a higher power supply node, and collecting power utilization current through a current collecting unit 111 at a lower power utilization node;
collecting power supply voltage through a voltage collecting unit 112 at a higher power supply node, and collecting power consumption voltage through a voltage collecting unit 112 at a lower power consumption node;
the acquired current information and voltage information are converted into digital signals through the corresponding signal processing unit 113 and transmitted to the corresponding main control metering module 12;
the main control metering module 12 meters power supply quantity at a superior power supply node; the master control metering module 12 at each lower-level power utilization node meters the power consumption of each node;
in the update metering module 32 of the cloud server 30, the sum of the power consumptions at all the lower-level power consumption nodes in the supply and demand area is calculated, and then the difference between the sum of the power consumptions and the power supply and demand amount is calculated, so that the power loss in the supply and demand area can be accurately identified.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An automatic identification system for power utilization circuits is characterized in that at least one supply and demand area is formed in a power utilization circuit, and each supply and demand area comprises a superior power supply node and a plurality of subordinate power utilization nodes correspondingly connected with the superior power supply node; in an automatic identification system comprising:
the metering device is arranged at each node in the power utilization line and is used for metering power utilization information at each node;
the identification device is matched with the metering device and is used for identifying the corresponding relation between the upper power supply node and the lower power utilization node;
the cloud server is in communication connection with the metering device and the recognition device and performs data processing according to the corresponding relation recognized by the recognition device and the electricity utilization information metered by the metering device;
wherein:
the identification device comprises an identification module arranged at a superior power supply node and an identification module arranged at a subordinate power utilization node; and the identification module in the same supply and demand area can execute communication connection, and the identification device identifies the corresponding upper and lower level correspondence between the corresponding upper power supply node and the lower power utilization node according to the communication connection.
2. The system for automatically identifying a power line as claimed in claim 1, wherein each of said metering devices comprises:
the information acquisition module is used for acquiring the power utilization information at each node;
and the master control metering module is used for metering the power consumption or the power supply quantity of each node according to the power consumption information acquired by the information acquisition module.
3. The system for automatically recognizing a power utilization circuit according to claim 2, wherein the cloud server comprises:
the storage module is used for storing supply and demand areas in the power utilization line and upper-level power supply nodes and lower-level power utilization nodes in each supply and demand area;
the updating metering module is used for executing the updating of the supply and demand area in the storage module according to the corresponding relation identified by the identification device; and the difference between the power supply amount of the upper-level power supply node in the area and the sum of the power consumption amounts of the corresponding plurality of lower-level power consumption nodes is measured according to the updated supply and demand area.
4. The system for automatically identifying power lines as claimed in claim 2, wherein the information collection module comprises:
the current acquisition unit is used for acquiring current information at the corresponding node;
the voltage acquisition unit is used for acquiring voltage information at the corresponding node;
and the signal processing unit is used for converting the acquired current information and voltage information into digital signals and transmitting the digital signals to the main control metering module.
5. The system as claimed in claim 4, wherein the metering device is a single metering device or a triple metering device, and
in the single metering device, the information acquisition module comprises a group of current acquisition units, voltage acquisition units and signal processing units which are matched with each other;
in the three metering devices, the information acquisition module comprises three groups of current acquisition units, voltage acquisition units and signal processing units which are matched with each other.
6. An automatic power line identification system as claimed in claim 1, wherein in said identification means: and the identification module are in communication connection through broadband carrier signals.
7. The system of claim 6, wherein the identification module comprises:
the broadband carrier communication unit is used for sequentially transmitting broadband carrier command signals to all the identification modules in the power utilization line; the broadband carrier feedback module is also used for receiving a returned broadband carrier feedback signal from the part identification module;
and the master control identification unit is used for identifying the lower-level electricity utilization node corresponding to the identification module returning the broadband carrier feedback signal and forming the upper-level and lower-level corresponding relation between the current upper-level power supply node and the identified lower-level electricity utilization node.
8. The system of claim 7, wherein the identification module comprises:
and the broadband carrier response unit is used for generating and returning a broadband carrier feedback signal in the original path when receiving the broadband carrier instruction signal.
9. The method for automatically identifying the power utilization circuit is characterized in that at least one supply and demand area is formed in the power utilization circuit, and each supply and demand area comprises a higher power supply node and a plurality of lower power utilization nodes correspondingly connected with the higher power supply node; the automatic identification method comprises the following steps:
in the power utilization line, a target upper power supply node sequentially sends command signals to all lower power utilization nodes;
the lower-level power utilization node which can be in communication connection with the target upper-level power supply node receives the instruction signal and returns a feedback signal to the target upper-level power supply node;
constructing a target supply and demand area according to the feedback signal, wherein the target supply and demand area comprises a target upper-level power supply node and a lower-level power utilization node corresponding to the feedback signal;
measuring the power supply amount of a target upper-level power supply node in a target supply and demand area and the total power consumption amount of a corresponding lower-level power consumption node in the target supply and demand area;
and calculating the difference between the power supply amount and the total power consumption amount.
10. The method as claimed in claim 9, wherein the command signal is a wideband carrier command signal and the feedback signal is a wideband carrier feedback signal.
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| CN111462470A (en) * | 2020-05-19 | 2020-07-28 | 广州穗华能源科技有限公司 | Low-voltage distribution area topology identification method based on power line carrier attenuation characteristics |
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