CN111880121B - Low-voltage transformer area topology system based on operation disturbance data analysis and topology identification method - Google Patents
Low-voltage transformer area topology system based on operation disturbance data analysis and topology identification method Download PDFInfo
- Publication number
- CN111880121B CN111880121B CN202010627712.1A CN202010627712A CN111880121B CN 111880121 B CN111880121 B CN 111880121B CN 202010627712 A CN202010627712 A CN 202010627712A CN 111880121 B CN111880121 B CN 111880121B
- Authority
- CN
- China
- Prior art keywords
- cabinet
- low
- optical power
- box
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007405 data analysis Methods 0.000 title claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 73
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000008014 freezing Effects 0.000 claims description 9
- 238000007710 freezing Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000004422 calculation algorithm Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to the field of power system automation, relates to the technical field of power distribution automation, in particular to a low-voltage transformer area topology system based on operation disturbance data analysis and a topology identification method, and comprises a three-phase power supply, wherein a distribution transformer is arranged in a main circuit of the three-phase power supply, a low-voltage end of the distribution transformer is connected with a bus of a low-voltage outlet cabinet, and three stages below the low-voltage outlet cabinet are respectively a branch box, a light power cabinet and an electric meter box, and the method is characterized in that: and the low-voltage outlet cabinet, the branch box, the optical power cabinet and the ammeter box are respectively provided with a plurality of acquisition terminals, the acquisition terminals can acquire electric data and current disturbance curves of corresponding devices to be tested in real time, the signal output end of each acquisition terminal is connected with a processing terminal, topology identification software is arranged in the processing terminal, and the power supply membership and the line inlet and outlet connection relation between each level can be determined according to the information output by the acquisition terminal.
Description
Technical Field
The invention belongs to the field of power system automation, relates to the technical field of power distribution automation, and particularly relates to a low-voltage transformer area topology system based on operation disturbance data analysis and a topology identification method.
Background
The low-voltage transformer area topology of the power distribution network refers to a connection relationship from low-voltage side outgoing lines of a distribution transformer to each user access point, and is generally divided into four levels at most: low voltage outlet cabinet (JP cabinet) -branch box-optical power cabinet-meter box. The outlet end of the distribution transformer (simply called distribution transformer) is connected with the inlet end of the JP cabinet, the outlet end of the JP cabinet is connected with the inlet end of the branch box, the outlet end of the branch box is connected with the inlet end of the optical cabinet/force cabinet, and the outlet end of the optical cabinet/force cabinet is connected with the inlet end of the ammeter box.
Due to the continuous development of urban construction, the electricity consumption of residents is increased increasingly, and the original connection relation is often required to be broken due to the power supply capability or due to convenience and other reasons, for example, a branch box which is originally powered by an A JP cabinet is switched to a B JP cabinet, and the power supply membership is gradually blurred after long-time accumulation.
Disclosure of Invention
The invention aims to make up the defects of the prior art and provides a low-voltage transformer area topology system and a topology identification method based on operation disturbance data analysis, wherein the low-voltage transformer area topology system can determine the membership of an JP cabinet, a branch box, a light power cabinet and an ammeter box and the connection relationship of an adjacent level access line under the same power supply path.
The technical scheme adopted by the invention is as follows:
The utility model provides a low-voltage transformer area topological system based on operation disturbance data analysis, includes three-phase power, install distribution transformer in three-phase power's the main road, the low pressure end and the busbar connection of low pressure outlet cabinet of this distribution transformer, establish tertiary branch box, optical power cabinet and ammeter case respectively under the low pressure outlet cabinet, its characterized in that: and the low-voltage outlet cabinet, the branch box, the optical power cabinet and the ammeter box are respectively provided with a plurality of acquisition terminals, the acquisition terminals can acquire electric data and current disturbance curves of corresponding devices to be tested in real time, the signal output end of each acquisition terminal is connected with a processing terminal, topology identification software is arranged in the processing terminal, and the power supply membership and the metal wire connection relation between each level can be determined according to the information output by the acquisition terminal.
Further, the processing terminal adopts a computer.
The topology identification method of the low-voltage area topology system based on the operation disturbance data analysis comprises the following steps:
step 1: the method comprises the steps that electric data of the local line quantity is monitored in real time by measuring terminals arranged in a low-voltage outgoing line cabinet, a branch box, a light power cabinet and a meter box, and the measuring terminals mainly comprise A, B, C three-phase current amounts and collected current disturbance curves;
Step2: the current disturbance curve refers to a current curve acquired by a measuring terminal in real time, the acquisition frequency is 128 points/cycle, and the latest 1 minute data is reserved in a memory;
Step 3: the measuring terminals are communicated with a computer, and the detection data are uploaded;
step 4: the detection data are collected to topology identification software arranged in the computer;
step 5: the computer synchronizes the clocks of the measuring terminals and can acquire real-time data of all the terminals in real time according to the needs;
Step 6: the computer can send a command for obtaining a current disturbance curve of corresponding time to a specific measurement terminal, and the measurement terminal sends the curve of corresponding time to the computer according to the command;
step 7: and the topology software arranged in the computer calculates according to the collected electrical data.
Further, in the step 7, the calculation method of the topology software includes the following steps:
step 7.1, determining power supply membership relations among the low-voltage outlet cabinet, the branch box, the optical power cabinet and the ammeter box;
step 7.2, determining the connection relation between the outlet wire of the low-voltage outlet wire cabinet and the inlet wire and outlet wire of the branch box;
Step 7.3, determining the connection relation between the outlet line of the branch box and the inlet and outlet lines of the optical power cabinet;
and 7.4, determining the connection relation between outgoing lines of the optical power cabinet and incoming lines and outgoing lines of the electric meter box.
Further, in the step 7.1, the power supply membership relationship between the low-voltage outlet cabinet, the branch box, the optical power cabinet and the electric meter box includes the following steps:
step 7.1.1, the computer sends a command for taking a current disturbance curve to a certain terminal of the electric meter box with undetermined topology at regular time to obtain a current disturbance curve;
step 7.1.2, judging whether each circuit of the ammeter box is disturbed or not, wherein the disturbance is defined as that the effective value of 20 ms time of one cycle is more than 5 times of the effective value of the previous cycle;
Step 7.1.3, if disturbance exists, recording a disturbance curve y of the electric meter box line with the disturbance and a time T10 seconds before the disturbance exists;
Step 7.1.4, the computer sends a command of receiving a T-moment disturbance curve to the optical power cabinet, the branch box and the low-voltage outlet cabinet to obtain the curves;
Step 7.1.5 calculates the Euclidean distance between these curves x and y, the calculation algorithm is D (x, y) can represent the similarity of the curve x and y, the smaller the value, the greater the similarity;
step 7.1.6, obtaining Euclidean distances between all outgoing line disturbance curves of the optical power cabinet and y, and selecting the smallest data as the Euclidean distance between the optical power cabinet and the electric meter box;
Step 7.1.7, obtaining Euclidean distances between all the optical power cabinets and the electric meter box, and obtaining an optical power cabinet with the minimum Euclidean distance dmin, wherein if dmin is smaller than the lower threshold limit, the optical power cabinet and the electric meter box are considered to be powered by the same low-voltage outlet cabinet;
step 7.1.8 is similar to the step of obtaining a branch box and a low-voltage outlet cabinet corresponding to the power supply of the same low-voltage outlet cabinet with the electric meter box;
if the power supply membership determination is not completed in step 7.1.9, the process starts again with step 7.1.1.
Further, in the step 7.2, the method includes the following steps:
7.2.1 the computer sends a command of freezing the current value at a specific moment to the low-voltage outlet cabinet terminal and the branch box terminal;
7.2.2 reading real-time current values of the terminals at specific moments;
7.2.3 obtaining the outlet current value IJ of the low-voltage outlet cabinet and the current values Ii (I1, I2, I3, …) of each line of the branch box;
7.2.4 if IJ is greater than the upper threshold limit and IJ is equal to Ii, namely |IJ-Ii| is smaller than the lower threshold limit, the branch box line corresponding to Ii is considered to be the inlet line of the branch box, and is connected with the outlet line of the low-voltage outlet cabinet corresponding to IJ, and other branch box lines are the outlet lines of the branch box, so that the connection relation between the outlet line of the low-voltage outlet cabinet and the inlet and outlet lines of the branch box is determined;
7.2.5 after a1 hour interval, the topology is redetermined back to step 7.2.1.
Further, in the step 7.3, the method includes the following steps:
7.3.1, the computer sends a command of freezing the current value at a specific moment to the branch box and the optical power cabinet terminal;
7.3.2 reading real-time current values of the terminals at specific moments;
7.3.3 obtaining a branch box outlet current value IJ and current values Ii (I1, I2, I3, …) of each line of the optical power cabinet;
7.3.4 if IJ is greater than the upper threshold limit and IJ is equal to Ii, i.e., i j-Ii is less than the lower threshold limit, the optical power cabinet line corresponding to Ii is considered to be an incoming line of the optical power cabinet, and the other optical power cabinet lines are outgoing lines of the optical power cabinet, so that the determination of the connection relationship between the outgoing lines of the optical power cabinets and the incoming and outgoing lines of the optical power cabinets is completed;
7.3.5 after 1 hour interval, go back to step 7.3.1 to redetermine the topology.
Further, in the step 7.3, the method includes the following steps:
7.4.1, the computer sends a command of freezing a current value at a specific moment to the terminal of the optical power cabinet and the electric meter box;
7.4.2 reads the real-time current values of the terminals at specific moments;
7.4.3 obtaining a power cabinet outlet current value IJ, and using current values Ii (I1, I2, I3, …) of each circuit of the electric meter box;
7.4.4 if IJ is greater than the upper threshold, and IJ is equal to Ii, i.e., i j-Ii is less than the lower threshold, the electric meter box line corresponding to Ii is considered to be the incoming line of the electric meter box, and is connected with the outgoing line of the optical power cabinet corresponding to IJ, and the other electric meter box lines are the outgoing lines of the electric meter box, so that the connection relation between the outgoing line of the optical power cabinet and the incoming and outgoing lines of the electric meter box is determined;
7.4.5 after a1 hour interval, the topology is redetermined back to step 7.3.1.
The invention has the advantages and positive effects that:
According to the invention, acquisition terminals for acquiring electrical data in real time are installed in each level of architecture, signal output ends of the acquisition terminals are collected into a computer, and then identification and processing are carried out according to corresponding steps and calculation methods according to software built in the computer, so that membership relations of the JP cabinets, the branch cabinets, the optical power cabinets and the electric meter boxes under the same power supply path are confirmed, the upper optical power cabinet of each electric meter box, the upper branch cabinet of each optical power cabinet, the upper JP cabinet of each branch cabinet and the incoming and outgoing line connection relation from the JP cabinets to the meter boxes can be determined. The problem that the power supply membership of the low-voltage transformer area is gradually fuzzy after long-time accumulation can be effectively solved, and the operation maintenance lean level of the low-voltage power distribution network is remarkably improved.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
Fig. 2 is a schematic diagram of the identification of the JP cabinet, the branch box, the optical power cabinet and the electric meter box under the same power supply path in the present invention.
Detailed Description
The invention will now be further illustrated by reference to the following examples, which are intended to be illustrative, not limiting, and are not intended to limit the scope of the invention.
The invention discloses a low-voltage transformer area topology system based on operation disturbance data analysis, which comprises a three-phase power supply, wherein a distribution transformer is installed in a main circuit of the three-phase power supply, a low-voltage end of the distribution transformer is connected with a bus of a low-voltage outlet cabinet, three stages of branch boxes, a light power cabinet and an ammeter box are respectively arranged below the low-voltage outlet cabinet.
In this embodiment, the processing terminal uses a computer.
The topology identification method of the low-voltage area topology system based on the operation disturbance data analysis comprises the following steps:
step 1: the method comprises the steps that electric data of the local line quantity is monitored in real time by measuring terminals arranged in a low-voltage outgoing line cabinet, a branch box, a light power cabinet and a meter box, and the measuring terminals mainly comprise A, B, C three-phase current amounts and collected current disturbance curves;
Step2: the current disturbance curve refers to a current curve acquired by a measuring terminal in real time, the acquisition frequency is 128 points/cycle, and the latest 1 minute data is reserved in a memory;
Step 3: the measuring terminals are communicated with a computer, and the detection data are uploaded;
step 4: the detection data are collected to topology identification software arranged in the computer;
step 5: the computer synchronizes the clocks of the measuring terminals and can acquire real-time data of all the terminals in real time according to the needs;
Step 6: the computer can send a command for obtaining a current disturbance curve of corresponding time to a specific measurement terminal, and the measurement terminal sends the curve of corresponding time to the computer according to the command;
step 7: and the topology software arranged in the computer calculates according to the collected electrical data.
Step 7.1, determining power supply membership relations among the low-voltage outlet cabinet, the branch box, the optical power cabinet and the ammeter box;
step 7.1.1, the computer sends a command for taking a current disturbance curve to a certain terminal of the electric meter box with undetermined topology at regular time to obtain a current disturbance curve;
step 7.1.2, judging whether each circuit of the ammeter box is disturbed or not, wherein the disturbance is defined as that the effective value (the square sum of 128 points and the open root number) of the time of 20 milliseconds in one cycle is more than 5 times of the effective value of the previous cycle;
Step 7.1.3, if disturbance exists, recording a disturbance curve y of the electric meter box line with the disturbance and a time T10 seconds before the disturbance exists;
Step 7.1.4, the computer sends a command of receiving a T-moment disturbance curve to the optical power cabinet, the branch box and the low-voltage outlet cabinet to obtain the curves;
Step 7.1.5 calculates the Euclidean distance between these curves x and y, the calculation algorithm is D (x, y) can represent the similarity of the curve x and y, the smaller the value, the greater the similarity;
step 7.1.6, obtaining Euclidean distances between all outgoing line disturbance curves of the optical power cabinet and y, and selecting the smallest data as the Euclidean distance between the optical power cabinet and the electric meter box;
step 7.1.7, obtaining Euclidean distances between all the optical power cabinets and the electric meter box, and obtaining an optical power cabinet with the minimum Euclidean distance dmin, wherein if dmin is smaller than a lower threshold limit (such as 0.002), the optical power cabinet and the electric meter box are considered to be powered by the same low-voltage outlet cabinet;
step 7.1.8 is similar to the step of obtaining a branch box and a low-voltage outlet cabinet corresponding to the power supply of the same low-voltage outlet cabinet with the electric meter box;
if the power supply membership determination is not completed in step 7.1.9, the process starts again with step 7.1.1.
Step 7.2, determining the connection relation between the outlet wire of the low-voltage outlet wire cabinet and the inlet wire and outlet wire of the branch box;
7.2.1 the computer sends a command of freezing the current value at a specific moment to the low-voltage outlet cabinet terminal and the branch box terminal;
7.2.2 reading real-time current values of the terminals at specific moments;
7.2.3 obtaining the outlet current value IJ of the low-voltage outlet cabinet and the current values Ii (I1, I2, I3, …) of each line of the branch box;
7.2.4 if IJ is greater than the upper threshold (e.g. 300A) and IJ is equal to IJ, i.e. i j-Ii is less than the lower threshold (e.g. 0.5A), the branch box line corresponding to Ii is considered to be the inlet line of the branch box, and the low-voltage outlet cabinet corresponding to IJ is connected with the outlet line of the branch box, and the other branch box lines are the outlet lines of the branch box, so that the connection relation between the outlet line of the low-voltage outlet cabinet and the inlet and outlet lines of the branch box is determined;
7.2.5 after a1 hour interval, the topology is redetermined back to step 7.2.1.
Step 7.3, determining the connection relation between the outlet line of the branch box and the inlet and outlet lines of the optical power cabinet;
7.3.1, the computer sends a command of freezing the current value at a specific moment to the branch box and the optical power cabinet terminal;
7.3.2 reading real-time current values of the terminals at specific moments;
7.3.3 obtaining a branch box outlet current value IJ and current values Ii (I1, I2, I3, …) of each line of the optical power cabinet;
7.3.4 if IJ is greater than the upper threshold limit and IJ is equal to Ii, i.e., i j-Ii is less than the lower threshold limit, the optical power cabinet line corresponding to Ii is considered to be an incoming line of the optical power cabinet, and the other optical power cabinet lines are outgoing lines of the optical power cabinet, so that the determination of the connection relationship between the outgoing lines of the optical power cabinets and the incoming and outgoing lines of the optical power cabinets is completed;
7.3.5 after 1 hour interval, go back to step 7.3.1 to redetermine the topology.
Step 7.4, determining the connection relation between outgoing lines of the optical power cabinet and incoming lines and outgoing lines of the ammeter box;
7.4.1, the computer sends a command of freezing a current value at a specific moment to the terminal of the optical power cabinet and the electric meter box;
7.4.2 reads the real-time current values of the terminals at specific moments;
7.4.3 obtaining a power cabinet outlet current value IJ, and using current values Ii (I1, I2, I3, …) of each circuit of the electric meter box;
7.4.4 if IJ is greater than the upper threshold, and IJ is equal to Ii, i.e., i j-Ii is less than the lower threshold, the electric meter box line corresponding to Ii is considered to be the incoming line of the electric meter box, and is connected with the outgoing line of the optical power cabinet corresponding to IJ, and the other electric meter box lines are the outgoing lines of the electric meter box, so that the connection relation between the outgoing line of the optical power cabinet and the incoming and outgoing lines of the electric meter box is determined;
7.4.5 after a1 hour interval, the topology is redetermined back to step 7.3.1.
Claims (5)
1. The utility model provides a topology identification method of low-voltage district topology system based on operation disturbance data analysis, the low-voltage district topology system who adopts includes three-phase power, install distribution transformer in three-phase power's the main road, the low-voltage end and the busbar connection of low-voltage outlet cabinet of this distribution transformer, establish the tertiary branch box, optical power cabinet and ammeter case respectively under the low-voltage outlet cabinet, its characterized in that: the low-voltage outlet cabinet, the branch box, the optical power cabinet and the ammeter box are respectively provided with a plurality of acquisition terminals, the acquisition terminals can acquire electric data and current disturbance curves of corresponding devices to be tested in real time, the signal output end of each acquisition terminal is connected with a processing terminal, topology identification software is arranged in the processing terminal, and the power supply membership and the line inlet and outlet connection relation between all levels can be determined according to information output by the acquisition terminals;
the topology identification method of the low-voltage station topology system comprises the following steps:
Step 1: the method comprises the steps that electric data of a local line are monitored in real time by measuring terminals arranged in a low-voltage outgoing line cabinet, a branch box, a light power cabinet and a meter box, wherein the electric data comprise A, B, C three-phase current amounts and collected current disturbance curves;
Step2: the current disturbance curve refers to a current curve acquired by a measuring terminal in real time, the acquisition frequency is 128 points/cycle, and the latest 1 minute data is reserved in a memory;
Step 3: the measuring terminals are communicated with a computer, and the detection data are uploaded;
step 4: the detection data are collected to topology identification software arranged in the computer;
step 5: the computer synchronizes the clocks of the measuring terminals and acquires real-time data of all the terminals in real time according to the needs;
Step 6: the computer sends a command for obtaining a current disturbance curve of corresponding time to a specific measurement terminal, and the measurement terminal sends the curve of corresponding time to the computer according to the command;
Step 7: topology software built in the computer calculates according to the collected electrical data;
in the step 7, the calculation method of the topology software comprises the following steps:
step 7.1, determining power supply membership relations among the low-voltage outlet cabinet, the branch box, the optical power cabinet and the ammeter box;
step 7.2, determining the connection relation between the outlet wire of the low-voltage outlet wire cabinet and the inlet wire and outlet wire of the branch box;
Step 7.3, determining the connection relation between the outlet line of the branch box and the inlet and outlet lines of the optical power cabinet;
step 7.4, determining the connection relation between outgoing lines of the optical power cabinet and incoming lines and outgoing lines of the ammeter box;
in the step 7.1, the power supply membership relationship among the low-voltage outlet cabinet, the branch box, the optical power cabinet and the ammeter box comprises the following steps:
step 7.1.1, the computer sends a command for acquiring a current disturbance curve to a certain undetermined topological ammeter box terminal at regular time to acquire a current disturbance curve;
step 7.1.2, judging whether each circuit of the ammeter box is disturbed or not, wherein the disturbance is defined as that the effective value of 20ms time of one cycle is more than 5 times of the effective value of the previous cycle;
Step 7.1.3, if disturbance exists, recording a disturbance curve y of the electric meter box line with the disturbance and a time T10 seconds before the disturbance exists;
Step 7.1.4, the computer sends a disturbance curve command at the moment T to the optical power cabinet, the branch box and the low-voltage outlet cabinet to obtain curves x;
Step 7.1.5 calculates the Euclidean distance between these curves x and y, the calculation algorithm is D (x, y) represents the similarity between the x curve and the y curve, and the smaller the numerical value is, the larger the similarity is;
step 7.1.6, obtaining Euclidean distances between all outgoing line disturbance curves of the optical power cabinet and y, and selecting the smallest data as the Euclidean distance between the optical power cabinet and the electric meter box;
Step 7.1.7, obtaining Euclidean distances between all the optical power cabinets and the electric meter box to obtain an optical power cabinet with the minimum Euclidean distance dmin, and if dmin is smaller than a threshold lower limit, considering that the optical power cabinet and the electric meter box are powered by the same low-voltage outlet cabinet;
Step 7.1.8 is similar to the step of obtaining a branch box and a low-voltage outlet cabinet corresponding to the electricity meter box supplied by the same low-voltage outlet cabinet;
if the power supply membership determination is not completed in step 7.1.9, the process starts again with step 7.1.1.
2. The topology identification method of a low-voltage district topology system based on operation disturbance data analysis according to claim 1, wherein: the processing terminal adopts a computer.
3. The topology identification method of a low-voltage district topology system based on operation disturbance data analysis according to claim 1, wherein: the step 7.2 includes the following steps:
7.2.1 the computer sends a command of freezing the current value at a specific moment to the low-voltage outlet cabinet terminal and the branch box terminal;
7.2.2 reading real-time current values of the terminals at specific moments;
7.2.3 obtaining the outlet current value IJ of the low-voltage outlet cabinet and the current value Ii of each line of the branch box;
7.2.4 if IJ is greater than the upper threshold limit and IJ is equal to Ii, namely |IJ-Ii| is smaller than the lower threshold limit, the branch box line corresponding to Ii is considered to be the inlet line of the branch box, and is connected with the outlet line of the low-voltage outlet cabinet corresponding to IJ, and other branch box lines are the outlet lines of the branch box, so that the connection relation between the outlet line of the low-voltage outlet cabinet and the inlet and outlet lines of the branch box is determined;
7.2.5 after a1 hour interval, the topology is redetermined back to step 7.2.1.
4. A topology identification method of a low voltage site topology system based on operational disturbance data analysis as recited in claim 3, wherein: the step 7.3 includes the following steps:
7.3.1, the computer sends a command of freezing the current value at a specific moment to the branch box and the optical power cabinet terminal;
7.3.2 reading real-time current values of the terminals at specific moments;
7.3.3 obtaining a branch box outlet current value IJ and current values Ii of all lines of the optical power cabinet;
7.3.4 if IJ is greater than the upper threshold limit and IJ is equal to Ii, i.e., i j-Ii is less than the lower threshold limit, the optical power cabinet line corresponding to Ii is considered to be an incoming line of the optical power cabinet, and the other optical power cabinet lines are outgoing lines of the optical power cabinet, so that the determination of the connection relationship between the outgoing lines of the optical power cabinets and the incoming and outgoing lines of the optical power cabinets is completed;
7.3.5 after 1 hour interval, go back to step 7.3.1 to redetermine the topology.
5. A topology identification method of a low voltage site topology system based on operational disturbance data analysis as recited in claim 3, wherein: the step 7.4 includes the following steps:
7.4.1, the computer sends a command of freezing a current value at a specific moment to the terminal of the optical power cabinet and the electric meter box;
7.4.2 reads the real-time current values of the terminals at specific moments;
7.4.3 obtaining a power cabinet outlet current value IJ, and using the current value Ii of each circuit of the electric meter box;
7.4.4 if IJ is greater than the upper threshold, and IJ is equal to Ii, i.e., i j-Ii is less than the lower threshold, the electric meter box line corresponding to Ii is considered to be the incoming line of the electric meter box, and is connected with the outgoing line of the optical power cabinet corresponding to IJ, and the other electric meter box lines are the outgoing lines of the electric meter box, so that the connection relation between the outgoing line of the optical power cabinet and the incoming and outgoing lines of the electric meter box is determined;
7.4.5 after a1 hour interval, the topology is redetermined back to step 7.4.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627712.1A CN111880121B (en) | 2020-07-02 | 2020-07-02 | Low-voltage transformer area topology system based on operation disturbance data analysis and topology identification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627712.1A CN111880121B (en) | 2020-07-02 | 2020-07-02 | Low-voltage transformer area topology system based on operation disturbance data analysis and topology identification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111880121A CN111880121A (en) | 2020-11-03 |
| CN111880121B true CN111880121B (en) | 2024-06-21 |
Family
ID=73149909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010627712.1A Active CN111880121B (en) | 2020-07-02 | 2020-07-02 | Low-voltage transformer area topology system based on operation disturbance data analysis and topology identification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111880121B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162033B (en) * | 2021-04-07 | 2023-04-28 | 国网山东省电力公司营销服务中心(计量中心) | Automatic identification method and system for topological relation of distribution network station based on frozen current |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120668A (en) * | 2019-05-08 | 2019-08-13 | 许昌许继软件技术有限公司 | A kind of area's topology automatic identification method and system |
| CN111162608A (en) * | 2020-01-08 | 2020-05-15 | 国网湖北省电力有限公司电力科学研究院 | Distribution transformer area topology identification and verification method based on correlation analysis |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10571493B2 (en) * | 2014-02-25 | 2020-02-25 | Itron, Inc. | Smart grid topology estimator |
| CN106253270B (en) * | 2016-08-18 | 2018-12-25 | 西南交通大学 | Electric system vulnerable line identifying method and system |
| US10739396B2 (en) * | 2016-10-03 | 2020-08-11 | General Electric Technology Gmbh | Enhanced disturbance management of a power grid system |
| CN108173263B (en) * | 2017-12-29 | 2022-02-22 | 国网天津市电力公司电力科学研究院 | Distribution network topology error identification algorithm based on AMI measurement information |
| CN109285087A (en) * | 2018-07-17 | 2019-01-29 | 国网四川省电力公司电力科学研究院 | A kind of platform area topology identification method accelerated based on NB-IoT and GPU |
| CN109034666B (en) * | 2018-09-04 | 2021-06-22 | 国家电网有限公司 | Low-voltage power grid topology big data identification system and method based on load sudden change |
| CN109217478B (en) * | 2018-11-19 | 2021-03-12 | 深圳市均方根科技有限公司 | Low-voltage distribution area topological relation identification method, concentrator and storage medium |
| CN110350528B (en) * | 2019-07-22 | 2020-08-21 | 石家庄科林电气股份有限公司 | Low-voltage distribution area topology automatic identification method |
| CN110729724A (en) * | 2019-10-25 | 2020-01-24 | 山东电工电气集团有限公司 | Automatic low-voltage distribution area topology identification method |
-
2020
- 2020-07-02 CN CN202010627712.1A patent/CN111880121B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120668A (en) * | 2019-05-08 | 2019-08-13 | 许昌许继软件技术有限公司 | A kind of area's topology automatic identification method and system |
| CN111162608A (en) * | 2020-01-08 | 2020-05-15 | 国网湖北省电力有限公司电力科学研究院 | Distribution transformer area topology identification and verification method based on correlation analysis |
Non-Patent Citations (1)
| Title |
|---|
| AMI数据分析方法;栾文鹏 等;中国电机工程学报;第35卷(第1期);第29-36页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111880121A (en) | 2020-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110350528B (en) | Low-voltage distribution area topology automatic identification method | |
| CN111864771A (en) | Low-voltage distribution area topology automatic identification method | |
| CN109799474B (en) | Multi-epitope meter box electric energy meter phase identification method and system based on data correlation | |
| CN111650431B (en) | Ammeter region identification method | |
| CN112034260B (en) | Accurate analysis and anti-electricity-stealing accurate positioning method for low-voltage line loss of distribution transformer area | |
| CN113113911A (en) | Intelligent measurement switch with topology identification function and topology identification method | |
| CN111242391A (en) | Machine learning model training method and system for power load identification | |
| CN114565779B (en) | Low-voltage transformer area household change topology identification method and system | |
| CN112366690B (en) | Low-voltage area transverse node relation identification method based on strong synchronous voltage characteristic matching | |
| CN113162033A (en) | Automatic identification method and system for distribution network district topological relation based on frozen current | |
| CN111880121B (en) | Low-voltage transformer area topology system based on operation disturbance data analysis and topology identification method | |
| CN105958474B (en) | Dynamic capacity increasing method and system for power transmission line for power grid regulation and control system | |
| CN116170283B (en) | Processing method based on network communication fault system | |
| CN110108983B (en) | Intelligent cable state online measurement and control management method | |
| CN108510164B (en) | Online generation method for external network equivalent model of designated area in power system | |
| CN115639423A (en) | Internet-based intelligent distribution box monitoring control method and system | |
| CN116319350A (en) | Low-voltage distribution network topology identification method for electric meter measurement data and power line communication | |
| CN116154968A (en) | Power parameter monitoring system based on IEC104 protocol sensor | |
| CN113868821B (en) | Distribution network loss reduction method based on marketing and distribution big data fusion and terminal | |
| CN112202248B (en) | Low-voltage distribution network topology branch refining identification method | |
| CN114596171A (en) | Power failure event intelligent analysis method based on multi-source data fusion | |
| CN114168662A (en) | Power distribution network problem combing and analyzing method and system based on multiple data sources | |
| CN113406405A (en) | Line loss calculation method | |
| CN114172541B (en) | Energy consumption balance control method, device and system for power line communication network | |
| CN220543018U (en) | Power plant settlement gateway metering system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |