CN111464366A - Power quantity comparison and geographical positioning-based distribution room topology identification method - Google Patents

Power quantity comparison and geographical positioning-based distribution room topology identification method Download PDF

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Publication number
CN111464366A
CN111464366A CN202010316056.3A CN202010316056A CN111464366A CN 111464366 A CN111464366 A CN 111464366A CN 202010316056 A CN202010316056 A CN 202010316056A CN 111464366 A CN111464366 A CN 111464366A
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electric quantity
layer
node
devices
relationship
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CN111464366B (en
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黄良栋
吴章宪
赵红军
杜成江
王吉平
王加友
毕昊林
郑林博
王志强
李冰
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Yantai Oriental Weston Electric Power Equipment Co ltd
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Yantai Oriental Weston Electric Power Equipment Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12—Discovery or management of network topologies
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40—Display of information, e.g. of data or controls

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a station area topology identification method based on electric quantity comparison and geographical positioning, which comprises the following steps: recording information of devices contained in each node in each layer in a line on site, and recording the affiliation relationship between an incoming line device and an outgoing line device of each node and the geographical position information of each device; collecting electric quantity data of each node in a period of time; and thirdly, determining the affiliation relationship between the wire outlet device of each node in the upper layer of the adjacent layer and the wire inlet device of each node in the lower layer of the adjacent layer by comparing the electric quantity data. According to the method, an intelligent mobile terminal, intelligent metering equipment of each node of a transformer area and a system main station are combined, the topological relation of the transformer area is obtained through the geographical positioning function of the mobile terminal and a big data comparison algorithm on the premise of not adding an additional device and not injecting other signals through field data acquisition and interaction, and reliable technical support is provided for the construction of the transformer area.

Description

Power quantity comparison and geographical positioning-based distribution room topology identification method
Technical Field
The invention relates to a method for identifying a platform area topology, in particular to a method for identifying the platform area topology based on electric quantity comparison and geographical positioning.
Background
In the prior art, the following methods are used for realizing topology identification of the power distribution station electric network:
(1) a communication topology network is formed by utilizing the existing low-voltage line power line carrier communication technology including a narrow-band power line carrier or a wide-band power line carrier through the transmission form of a carrier communication relay node. The method has the characteristics of simplicity, easiness and no need of increasing equipment and cost. However, since the carrier communication topology is realized by the relay node of the carrier communication, the real topology of the distribution room cannot be accurately reflected, and the carrier communication is affected by the power load, the topology is changeable and complex, and the deep application of the power service cannot be accurately supported.
(2) Injecting a power frequency signal with higher power into a low-voltage distribution line (or a bus), injecting the power frequency signal into a platform area outgoing line and a branch node by adopting equipment, and identifying the platform area topology by acquiring the power frequency signal. The method has the advantages that the accuracy is high, but a large number of devices are required to be added on site, the manual point selection, installation, testing and other work are involved, the hardware and labor cost is increased, and the dynamic adjustment function is not supported. On the other hand, the injected power frequency signal can bring harmonic damage to the power grid, and potential safety hazards of the power grid are increased.
(3) The power utilization information of the power distribution station user acquired by the power utilization information acquisition system is utilized, and the connection relation between the power supply source of the station and the electric equipment is automatically analyzed by a voltage data similarity or correlation analysis method without increasing hardware cost. The method has the advantages of no need of increasing investment and novelty. However, the method needs to improve the accuracy of topology identification, and has poor adaptability to line overload or special voltage distribution of a line with a distributed power supply.
Disclosure of Invention
The invention provides a station area topology identification method based on electric quantity comparison and geographical positioning, which aims to: the accuracy and the real-time performance of topology identification are improved, the hardware and labor cost are reduced, and the influence on the operation of a power grid is reduced.
The technical scheme of the invention is as follows:
a method for identifying a platform area topology based on electric quantity comparison and geographical positioning comprises the following steps:
recording information of devices contained in each node in each layer in a line on site, and recording the affiliation relationship between an incoming line device and an outgoing line device of each node and the geographical position information of each device;
collecting electric quantity data of each node in a period of time;
and thirdly, determining the affiliation relationship between the wire outlet device of each node in the upper layer of the adjacent layer and the wire inlet device of each node in the lower layer of the adjacent layer by comparing the electric quantity data.
As a further improvement of the method: recording by using an intelligent mobile terminal in the step (I);
the intelligent mobile terminal comprises a flat-plate-shaped shell, wherein a CPU, a storage module, a receiving and sending circuit, a gain control module, a key circuit, a battery, a power circuit, a wireless module and a positioning module are arranged in the shell; the touch screen is arranged on the front side of the shell, the camera is arranged on the rear side of the shell, and the button is arranged on the shell;
the receiving and sending circuit is respectively connected with the camera and the touch screen and is also connected with the CPU; the camera is used for shooting a two-dimensional code on the electric quantity device;
the storage module is connected with the CPU; the storage module is used for storing the acquired information;
the button is connected with the gain control module through the key circuit, and the gain control module is connected with the CPU; the gain control module is used for carrying out gain adjustment on the signal of the key circuit and sending the signal to the CPU;
the battery is connected with the power circuit and used for supplying power to the CPU through the power circuit;
the wireless module and the positioning module are respectively connected with the CPU;
during recording, a camera is used for shooting a two-dimensional code on the electric quantity device so as to identify the information of the device, meanwhile, a positioning module is used for obtaining the geographic position information of the current device, and then the known affiliation relationship between the devices is recorded through a touch screen according to the connection condition observed on site; the obtained information and the affiliation are stored in a storage module and uploaded to the master station system.
As a further improvement of the method: the determination method of the affiliated relationship in the step (three) comprises the following steps: aiming at a certain outlet device in the upper layer, finding a set from the inlet devices of the next layer which does not establish the relationship of the outlet devices by using an exhaustion method, wherein the sum of the electric quantity of the set is equal to the electric quantity of the outlet device of the upper layer, and then judging that the inlet device contained in the set belongs to the outlet device of the upper layer.
As a further improvement of the method: collecting current signals in the step (II);
in the step (III), the current change characteristics of all the devices are extracted, then the previous layer wire outlet device and the next layer wire inlet device with the same current characteristics in the same time period are classified into the same class, and the next layer wire inlet device in the same class is judged to belong to the previous layer wire outlet device in the class; the next layer of incoming line devices which are not classified are classified into a pending set;
then, aiming at a certain outlet device in the upper layer, calculating the known electric quantity sum of the inlet devices belonging to the lower layer of the outlet device, and then calculating the difference value between the electric quantity sum and the electric quantity sum of the outlet device; then, an exhaustion method is used for finding a subset from the set to be determined, the electric quantity sum of the subset is equal to the electric quantity difference value, and then the incoming line device contained in the subset is judged to belong to the outgoing line device, and the judgment of the relationship of the outgoing line device is completed; and then removing the subset from the to-be-determined set to obtain a new to-be-determined set, and continuing to perform relationship matching judgment of other outlet devices.
As a further improvement of the method: before using an exhaustion method, eliminating the incoming line devices with the electric quantity larger than the electric quantity difference value in the set to be determined, so that the incoming line devices do not participate in exhaustion of the current previous layer outgoing line device;
when exhaustively, select an inlet wire device in the set of treating, then combine this inlet wire device with other inlet wire devices in the set of treating, ask electric quantity and respectively for every combination:
if the sum of the electric quantity of each combination is not equal to the difference value of the electric quantity, the currently selected incoming line device is removed, so that the currently selected incoming line device does not participate in exhaustion of the outgoing line device on the previous layer, and the next incoming line device is continuously selected for combination and matching judgment; and if the electric quantity of a certain combination is equal to the electric quantity difference value, matching of the affiliated relationship is completed, the combination is removed from the to-be-determined set to obtain a new to-be-determined set, and then the relationship matching judgment of other outlet devices is continued.
Compared with the prior art, the invention has the following beneficial effects: (1) according to the method, an intelligent mobile terminal, intelligent metering equipment (such as a low-voltage switch with metering, a branch monitoring unit and the like) of each node of a transformer area and a system main station are combined, through field data acquisition and interaction, under the premise of not increasing additional devices and not injecting other signals, a topological relation of the transformer area is obtained through a geographical positioning function and a big data comparison algorithm of the mobile terminal, the service scenes of line loss metering, fault positioning, active first-aid repair and the like of the transformer area can be effectively supported, a large amount of manpower and material resources are saved for power construction, the power grid operation electric energy loss is reduced, the power failure time is shortened, the power supply reliability is improved, and reliable technical support is provided for transformer area construction; (2) the method further comprises the steps of extracting features for analysis, completing partial matching work to form partial upper and lower layer corresponding relations, and then completing matching judgment through an exhaustion method, so that the calculated amount of the exhaustion method is reduced, and the accuracy and efficiency of identification are improved.
Drawings
Fig. 1 is a schematic view of a cell topology in an embodiment.
Fig. 2 is a normal waveform diagram of current.
FIG. 3 is a waveform diagram of current after the induction cooker is connected.
Fig. 4 is a waveform diagram of current after the refrigerator is connected.
Fig. 5 is a current waveform diagram after the air conditioner is switched on.
Fig. 6 is an electrical schematic diagram of the smart mobile terminal.
Fig. 7 is a schematic diagram of an external structure of the intelligent mobile terminal.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
the present embodiment performs topology identification for a station area with an architecture as shown in fig. 1. The hierarchical relationship of the platform area has certain representativeness and is basically divided into three layers: case becomes JP cabinet node, branch node and table case node. The A-layer box transformer substation/JP cabinet node mainly comprises a main station area main incoming line and a distribution room/JP cabinet outgoing line; the node of the B-layer branch box comprises a branch incoming line and a branch outgoing line; the C-layer meter box node mainly comprises a meter box incoming line and an intelligent electric energy meter.
The station area framework analysis can obtain that the station area main incoming line corresponds to all box transformer substation/JP cabinet outgoing lines; each box transformer/JP cabinet outgoing line corresponds to an incoming line of the branch box at the lower end; each branch box outlet wire corresponds to one or more meter box inlet wires at the lower end. Theoretically, the outgoing line electric quantity of the upper node is equal to the incoming line electric quantity of each lower node in the same time period. Due to the fact that the box transformer/JP cabinet is multi-faceted and wide in outgoing lines, branches and meter box points, the difficulty of platform area topology identification is mainly focused on how to identify the association of upper and lower levels of a platform area.
The method provided by the invention comprises the following steps:
and (I) recording the information of the devices contained in each node in each layer in the line on site, and recording the affiliation relationship between the incoming line device and the outgoing line device of each node and the geographical position information of each device.
Specifically, recording is carried out by using an intelligent mobile terminal; the intelligent mobile terminal has the following structure:
as shown in fig. 6 and 7, the smart mobile terminal includes a flat-plate-shaped housing, in which a CPU7, a printing circuit 2, a serial port conversion circuit 3, a storage module 4, a receiving and transmitting circuit 6, a gain control module 10, a key circuit 11, a battery 13, a power supply circuit 14, a wireless module 17, a positioning module 18, a buzzer 19, and a control circuit 20 are mounted.
The touch screen 5 is installed to the front side of casing, and camera 1 and flashlight 15 are installed to the rear side of casing. The housing is also provided with buttons 12 for performing key input operations.
Further:
the receiving and sending circuit 6 is respectively connected with the camera 1 and the touch screen 5, and is also connected with the CPU 7.
The model of the camera 1 is OV7076, which is used for scanning and shooting two-dimensional codes on the electric quantity device, so that equipment information can be further conveniently identified. The recognized information is transmitted to the CPU7 through the reception/transmission circuit 6. The camera 1 is equipped with a flash to illuminate the device at the time of shooting. The flashlight may be used as the flashlight 15 or the flashlight 15 may be separately provided on the top of the housing.
The touch screen 5 is used for displaying an operation interface and can also perform input.
The receiving and sending circuit 6 is configured to receive and transmit an operation instruction of the CPU7, transmit the instruction to the camera 1 and the touch screen 5, receive barcode information scanned by the camera 1 and an input signal of the touch screen 5, and transmit the received barcode information and the input signal to the CPU 7.
The storage module 4 is F L ASH, is connected with the CPU7 and is also connected with the printing circuit 2, the storage module 4 is used for storing collected information files edited by the CPU7, geographical positioning information and the like, and the printing circuit 2 is used for printing and outputting the information in the storage module 4 in a text form.
The control circuit 20 is connected to the serial port conversion circuit 3 and the buzzer 19, respectively, and the control circuit 20 is further connected to the CPU 7.
The control circuit 20 is used for converting the instruction received and processed by the CPU7 into a serial port output mode for output through the serial port conversion circuit 3, and is also used for controlling the buzzer 19 to emit various prompt tones, such as operation success or failure tones, power supply under-voltage signals, and the like.
And the serial port conversion circuit 3 is used for interacting with computer data. The CPU7 converts data into a serial port output mode through the serial port conversion circuit 3 by the control circuit 20, completes data interaction with an external device, and is mainly used for upgrading an intelligent mobile terminal program, exporting distribution area positioning information and files, and the like. The serial port conversion circuit 3 is based on a CP2012 chip.
The buzzer 19 is a sound output module. The CPU7 collects and analyzes various commands, and when a prompt is required, the control circuit 20 transmits the sounding command to the buzzer 19, and the buzzer 19 generates a corresponding prompt sound according to the command.
The button 12 is connected to the gain control module 10 through the key circuit 11, and the gain control module 10 is connected to the CPU 7. The gain control module 10 is used for performing gain adjustment on the signal of the key circuit 11 and sending the signal to the CPU 7. The gain control module 10 is based on an AD603 chip.
The battery 13 is connected to a power circuit 14 for powering the CPU7 and the flashlight 15 via the power circuit 14. The power supply circuit 14 is also used to implement a charging function. Further, the terminal also includes a voltage detection module 16, and the voltage detection module 16 is connected to the CPU7 and the power circuit 14, respectively. The voltage detection module 16 adopts a dual-channel voltage detector integrated chip XCM410 for detecting the stability of the power circuit 14 and having a voltage stabilization function.
The wireless module 17 and the positioning module 18 are respectively connected with the CPU 7.
The wireless module 17 comprises a 4G module and a 5G module, and can perform remote data transmission. The positioning module 18 is a GPS module, and may also be a module chip supporting other positioning systems such as the beidou system.
The CPU7 is also connected with a Bluetooth module and an infrared module.
The terminal also comprises an oscillator 8 and a clock circuit 9, wherein the oscillator 8 is connected with a gain control module 10 through the clock circuit 9; the gain control module 10 is also used to gain adjust the clock signal and send it to the CPU 7. The oscillator 8 serves to control the accuracy of the system clock.
The CPU7 is a 64-bit ARM CPU7 processor with a master frequency of 66MHz for: the instructions input by the button 12 and the touch screen 5 and the data and instructions sent by the camera 1, the wireless module 17, the serial port and the positioning module 18 are received, analyzed and processed, the data are displayed through the touch screen 5, the control circuit 20 controls the serial port conversion circuit 3 to output the data, and the buzzer 19 can be controlled to send out prompt tones and the like.
In other aspects: the casing is the plastic material, and both ends are equipped with ascending arch 21 about the top of casing, and both ends are equipped with decurrent arch 21 about the bottom for play the cushioning effect at terminal drop-out.
During recording, a camera is used for shooting a two-dimensional code on the electric quantity device so as to identify the information of the device, meanwhile, a positioning module is used for obtaining the geographic position information of the current device, and then the known affiliation relationship between the devices is recorded through a touch screen according to the connection condition observed on site; the obtained information and the affiliation are stored in a storage module and uploaded to the master station system.
The detailed steps of the step (I) are as follows:
(1.1) firstly, in the installation and maintenance process, acquiring asset file information of a device by two-dimensional code scanning aiming at a station area total incoming line current device and a box transformer substation/JP cabinet outgoing line electric quantity device through a field intelligent mobile terminal, and associating the upper and lower layer affiliated relations of the electric quantity device at the same position through a touch screen, wherein if the station area total incoming line electric quantity device and each outgoing line electric quantity device of the box transformer substation/JP cabinet are at the same position of the station area (in the box transformer substation/JP cabinet), the upper and lower layer affiliated relations can be manually associated, and the intelligent mobile terminal is subjected to image forming processing; and meanwhile, specific geographical position information of the equipment is positioned through the GPS positioning system of the intelligent mobile terminal, all the information is stored in the intelligent mobile terminal, and the information is uploaded to the master station system.
(1.2) asset information scanning is carried out on the branch total incoming line electric quantity devices and all branch outgoing line electric quantity devices in the same branch box through the intelligent mobile terminal at the branch box node, asset archive information of the devices is formed, correlation of the affiliated relation is carried out on the intelligent mobile terminal, mapping processing is carried out, meanwhile, specific geographic position information where the equipment is located through a mobile terminal GPS positioning system, all information is stored in the intelligent mobile terminal, and meanwhile, a master station system is uploaded.
(1.3) carrying out asset information scanning on the incoming line electric quantity metering device and each electric energy meter of each meter box through the intelligent mobile terminal at the meter box node, forming the belonged logic relationship, carrying out mapping processing on the mobile terminal, positioning specific geographical position information of the equipment through a mobile terminal GPS positioning system, storing all information into the intelligent mobile terminal, and uploading a master station system.
So far, the affiliation between the incoming and outgoing devices inside each node has been clarified, but the affiliation between layers has not been clarified yet, such as the affiliation between a branch node and a meter box node (i.e., the affiliation between a branch box outgoing device and a meter box incoming device).
And (II) acquiring 15-minute electric quantity data (including voltage, current and other data) of each node in a broadcasting freezing mode of the intelligent terminal.
And thirdly, determining the affiliation relationship between the wire outlet device of each node in the upper layer of the adjacent layer and the wire inlet device of each node in the lower layer of the adjacent layer by comparing the electric quantity data.
Example one
The determination method in the step (three) comprises the following steps: aiming at a certain outgoing device in the upper layer (such as the ith outgoing device Bi of the B layer of the branch box layer), an exhaustion method is used for leading in a next layer of incoming devices (meter box layer) which are not related yetC-level line-feeding device) to find a set CBiThe sum of the electric quantity of the set is equal to the electric quantity of the outgoing line device Bi at the upper layer, and then the set C is judgedBiThe included wire inlet device is subordinate to the wire outlet device on the upper layer, namely the wire inlet device and the wire outlet device are in a connection relationship.
Example two
The difference between the present embodiment and the first embodiment is in step (iii):
and (III) extracting the current change characteristics of all the devices on the basis of collecting the current signals. By using the principle that only the branch loop can identify the branch current signal by the platform area branch identification current signal, and the electric quantity devices of other branches (including adjacent branches) cannot receive the branch current signal, under the condition of not adding any injection pulse and signal, the current characteristic curve of the electric quantity devices of upper and lower layers in the same branch is analyzed by the intelligent mobile terminal by extracting the current change characteristic (the current direction is from the lower layer to the upper layer) accessed by the related electric equipment, as shown in fig. 2 to 5.
Further, the upper layer wire outlet device and the lower layer wire inlet device with the same current characteristics in the same time period are classified into the same class, and the lower layer wire inlet device in the same class is judged to belong to the upper layer wire outlet device in the class; and (4) attributing the next layer of incoming devices which are not classified to a pending set.
In this embodiment, when the upper layer is a branch box layer B and the lower layer is a surface box layer C (the same applies to other adjacent layers), it is assumed that for the ith outlet device Bi of the branch box layer B, through current characteristic analysis, a plurality of inlet devices { C in the layer C are foundBi1，……CBimThe characteristics of the devices are the same, and meanwhile, the unclassified next layer incoming line device is classified into a to-be-determined set CpIn (1).
Then, for the outgoing device Bi in the previous layer, the known next layer incoming device { C subordinate to this outgoing device is calculatedBi1，……CBimElectric quantity and Sum ofC1Then calculating the electric quantity Q of the wire outlet deviceBiWith the electric quantity and SumC1Electric quantity difference value = QBi- SumC1。
Then the pending set CpThe line incoming devices with medium electric quantity larger than the electric quantity difference are eliminated, so that the line incoming devices do not participate in the following exhaustion of the current Bi, because the line incoming devices participate in the exhaustion combination, and the electric quantity and the SumC1The added electric quantity Q of the outgoing line device is larger than that of the outgoing line device currently aimed atBiContrary to the conservation law.
Exhaustive enumeration, from undetermined set CpIn select a inlet wire device C on C layerj(the electric quantity can be in the order from large to small, and also can be in other orders), and then the incoming line device C is connectedjThe method is combined with other wire inlet devices in a set to be determined, and the electric quantity and Sum of the wire inlet devices contained in each combination are respectively obtainedC2And further judging:
if all the respective power amounts and Sum are combinedC2If the difference value is not equal to the electric quantity difference value, the current C is shownjDoes not have an affiliated relationship with Bi, and the currently selected wire inlet device CjEliminating the Bi to avoid the exhaustion, and continuously selecting the next incoming line device Cj+1And (5) carrying out combination and matching judgment. If a certain combined power and SumC2Matching of the belongingrelationship of the Bi is completed if the difference value of the electric quantity is equal to the difference value of the electric quantity (namely, the next layer of incoming line devices contained in the combination are all subordinate to the Bi), and then the combination is removed from the to-be-determined set to obtain a new to-be-determined set CpAnd then continuing to carry out the relation matching judgment of other outlet devices.
According to the embodiment, the analysis is performed by extracting features, part of matching work is completed firstly, the corresponding relation between the upper layer and the lower layer of the part is formed, and then the matching judgment is further completed through the exhaustion method.

Claims (5)

1. A method for identifying a platform area topology based on electric quantity comparison and geographical positioning is characterized by comprising the following steps:
recording information of devices contained in each node in each layer in a line on site, and recording the affiliation relationship between an incoming line device and an outgoing line device of each node and the geographical position information of each device;
collecting electric quantity data of each node in a period of time;
and thirdly, determining the affiliation relationship between the wire outlet device of each node in the upper layer of the adjacent layer and the wire inlet device of each node in the lower layer of the adjacent layer by comparing the electric quantity data.
2. The method for identifying a topology of a distribution room based on power comparison and geographical positioning as claimed in claim 1, wherein: recording by using an intelligent mobile terminal in the step (I);
the intelligent mobile terminal comprises a flat-plate-shaped shell, wherein a CPU (7), a storage module (4), a receiving and sending circuit (6), a gain control module (10), a key circuit (11), a battery (13), a power circuit (14), a wireless module (17) and a positioning module (18) are installed in the shell; the front side of the shell is provided with a touch screen (5), the rear side of the shell is provided with a camera (1), and the shell is also provided with a button (12);
the receiving and sending circuit (6) is respectively connected with the camera (1) and the touch screen (5) and is also connected with the CPU (7); the camera (1) is used for shooting a two-dimensional code on the electric quantity device;
the storage module (4) is connected with the CPU (7); the storage module (4) is used for storing the acquired information;
the button (12) is connected with the gain control module (10) through the key circuit (11), and the gain control module (10) is connected with the CPU (7); the gain control module (10) is used for carrying out gain adjustment on a signal of the key circuit (11) and sending the signal to the CPU (7);
the battery (13) is connected with the power circuit (14) and is used for supplying power to the CPU (7) through the power circuit (14);
the wireless module (17) and the positioning module (18) are respectively connected with the CPU (7);
during recording, a camera (1) is used for shooting a two-dimensional code on an electric quantity device so as to identify information of the device, meanwhile, a positioning module (18) is used for obtaining geographic position information of the current device, and then the known affiliation relationship between the devices is recorded through a touch screen (5) according to the connection condition observed on site; the obtained information and the relationship are stored in a storage module (4) and uploaded to a master station system.
3. The method for identifying a topology of a distribution room based on power comparison and geographical positioning as claimed in claim 1, wherein: the determination method of the affiliated relationship in the step (three) comprises the following steps: aiming at a certain outlet device in the upper layer, finding a set from the inlet devices of the next layer which does not establish the relationship of the outlet devices by using an exhaustion method, wherein the sum of the electric quantity of the set is equal to the electric quantity of the outlet device of the upper layer, and then judging that the inlet device contained in the set belongs to the outlet device of the upper layer.
4. The method for identifying a topology of a distribution room based on power comparison and geographical positioning as claimed in claim 1, wherein: collecting current signals in the step (II);
in the step (III), the current change characteristics of all the devices are extracted, then the previous layer wire outlet device and the next layer wire inlet device with the same current characteristics in the same time period are classified into the same class, and the next layer wire inlet device in the same class is judged to belong to the previous layer wire outlet device in the class; the next layer of incoming line devices which are not classified are classified into a pending set;
then, aiming at a certain outlet device in the upper layer, calculating the known electric quantity sum of the inlet devices belonging to the lower layer of the outlet device, and then calculating the difference value between the electric quantity sum and the electric quantity sum of the outlet device; then, an exhaustion method is used for finding a subset from the set to be determined, the electric quantity sum of the subset is equal to the electric quantity difference value, and then the incoming line device contained in the subset is judged to belong to the outgoing line device, and the judgment of the relationship of the outgoing line device is completed; and then removing the subset from the to-be-determined set to obtain a new to-be-determined set, and continuing to perform relationship matching judgment of other outlet devices.
5. The method for identifying a topology of a distribution room based on power comparison and geographical positioning as claimed in claim 4, wherein: before using an exhaustion method, eliminating the incoming line devices with the electric quantity larger than the electric quantity difference value in the set to be determined, so that the incoming line devices do not participate in exhaustion of the current previous layer outgoing line device;
when exhaustively, select an inlet wire device in the set of treating, then combine this inlet wire device with other inlet wire devices in the set of treating, ask electric quantity and respectively for every combination:
if the sum of the electric quantity of each combination is not equal to the difference value of the electric quantity, the currently selected incoming line device is removed, so that the currently selected incoming line device does not participate in exhaustion of the outgoing line device on the previous layer, and the next incoming line device is continuously selected for combination and matching judgment; and if the electric quantity of a certain combination is equal to the electric quantity difference value, matching of the affiliated relationship is completed, the combination is removed from the to-be-determined set to obtain a new to-be-determined set, and then the relationship matching judgment of other outlet devices is continued.
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