Intelligent electric meter phase identification method based on wireless communication

Abstract

The invention provides an intelligent electric meter phase identification method based on wireless communication, and relates to the technical field of electric power systems, and the method comprises the steps: collecting time data when a concentrator module detects that an A phase passes through a zero point, converting the time data into binary data, and transmitting the binary data to a server; meanwhile, the concentrator module transmits the converted binary data to the analysis module, the intelligent electric meter module is installed on a certain phase of three-phase power of a power grid, and when the intelligent electric meter module detects a zero-crossing signal of the phase where the intelligent electric meter module is located, the intelligent electric meter module collects time data of the phase, converts the time data into the binary data and sends the binary data to the analysis module; and meanwhile, the intelligent electric meter module transmits binary data to the analysis module, and time data is converted into binary data for data transmission, so that error detection can be improved, the reliability and efficiency of data transmission can be effectively improved, the data processing process can be simplified, and the complexity of data processing can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a smart meter phase identification method based on wireless communication. Background Art

[0002] With the rise of smart grids, smart meters are becoming more and more common as core components of advanced metering infrastructure. Compared with traditional mechanical or electronic meters, smart meters have more functions and significant advantages. They can automatically record and transmit users' electricity usage without manual meter reading, reducing labor costs and meter reading errors. Smart meter phase identification is an important part of smart grid management. It is crucial to ensure the stable operation of the power system and improve energy efficiency.

[0003] Existing power workers need that the phase detection method of the existing smart meter is basically carried out through the voltage detection method. The phase is determined by measuring the voltage of each phase. In a three-phase AC circuit, the smart meter uses a voltage transformer or a voltage sensor to measure the voltage of each phase, and records the peak value and phase angle of the voltage, and transmits it to the worker's computer. The calculation module and processing center in the computer calculate the transmitted data to determine the installation phase of the smart meter. However, the existing data transmission is basically transmitted using coded data. The original data is edited into multi-bit letters for transmission to facilitate subsequent data accuracy judgment. However, the use of coded data for transmission reduces transmission efficiency due to its complex coding. At the same time, the coded data is more susceptible to interference during the transmission process, which makes it more likely to cause errors in the transmitted data.

[0004] Therefore, it is necessary to provide a new smart meter phase identification method based on wireless communication to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a smart meter phase identification method based on wireless communication.

[0006] The smart meter phase identification method based on wireless communication provided by the present invention includes:

[0007] Step 1, data acquisition, the concentrator module is connected to the A phase, B phase and C phase of the three-phase electricity respectively, when the concentrator module detects that the A phase passes through the zero point, its time data is collected, and its time data is converted into binary data, and the concentrator module transmits the converted binary data to the analysis module, and the smart meter module is installed on a phase of the three-phase electricity of the power grid, when the smart meter module detects the zero-crossing signal of the phase, its time data is collected, and its time data is converted into binary data, and the smart meter module transmits the binary data to the analysis module;

[0008] Step 2: Data processing: the analysis module receives the binary data transmitted by the concentrator module and the smart meter module, performs calculation and analysis on the two sets of binary data, and transmits the two sets of calculation results to the processing center;

[0009] Step 3: Data determination: After the processing center receives the two sets of calculation results transmitted by the analysis module, if both sets of data results are zero, the determination is passed. The processing center issues a transmission instruction to the concentrator module and the smart meter module, so that the concentrator module and the smart meter module transmit the binary data to the calculation module respectively.

[0010] Step 4, phase determination, after the calculation module receives the binary data transmitted by the concentrator module and the smart meter module, the calculation module converts the two sets of binary data, converts the binary data into time data, and calculates the two sets of time data. The calculation module calculates the three-phase electrical phase of the smart meter module installed according to the calculation results based on the internally set determination conditions.

[0011] Preferably, when the concentrator module detects that phase A passes through zero, the concentrator module refers to the time when phase A passes through zero as time data, and the concentrator module converts the time data into data B through binary, and imports data B into C=B 17 +B 2 +1, the concentrator module then appends the calculated data C to the end of data B, so that E=B+C, and then the concentrator module transmits data E and data C to the analysis module.

[0012] Preferably, after the smart meter module detects the zero-crossing signal of the phase, the smart meter module transmits the time when it detects the zero-crossing signal of the phase as time data, and the smart meter module converts the time data into data G through binary, and imports G into H=G 17 +G 2 +1, the smart meter module then appends the calculated data H to the end of the data G, so that K=G+H, and then the concentrator module transmits the data K and the data H to the analysis module.

[0013] Preferably, after the analysis module receives data E and data C sent by the calculator module, the analysis module calculates E / C and transmits the calculation result to the processing center. At the same time, after the analysis module receives data K and data H sent by the smart meter module, the analysis module calculates K / H and transmits the calculation result to the processing center.

[0014] Preferably, the processing center receives the results of E / C and K / H transmitted by the analysis module. If the results of the two sets of data are both zero, the judgment is passed. The processing center issues a transmission instruction to the concentrator module and the smart meter module, so that the concentrator module and the smart meter module transmit data E, data C, data K and data H to the calculation module. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data. If all or one of the results of E / C and K / H is not zero, the processing center causes the module corresponding to the non-zero data to re-convert the identified zero-bit time point into binary, and import the calculation again, and transmit the result to the analysis module for another judgment. The analysis module then transmits the result of the second judgment to the processing center. If the judgment is passed, the processing center issues an instruction so that the concentrator module and the smart meter module transmit data E, data C, data K and H to the calculation module. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data. If the judgment is not passed again, the processing center sends a message to the staff so that the staff can maintain the corresponding module that has not passed the judgment.

[0015] Preferably, after the calculation module receives data E and data C transmitted by the concentrator module, the calculation module obtains data X by subtracting the mantissa of data E from data C, and the calculation module converts data X into the time of identifying the phase zero point transmitted by the concentrator module through binary system. After the calculation module receives data K and data H transmitted by the smart meter module, the calculation module obtains data Y by subtracting the mantissa of data K from data H, and the calculation module converts data Y into the time of identifying the phase zero point transmitted by the smart meter module through binary system.

[0016] Preferably, the calculation module calculates the time of identifying the phase zero point of the concentrator module and the time of identifying the phase zero point of the smart meter module. If the time of identifying the phase zero point of the concentrator module is equal to the time of identifying the phase zero point of the smart meter module, it is determined that the smart meter module is installed in phase A. If the time of identifying the phase zero point of the smart meter module is delayed by T / 3 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase B. If the time of identifying the phase zero point of the smart meter module is delayed by T / 6 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase C. The calculation module transmits the determination result to the processing center.

[0017] Compared with the related art, the smart meter phase identification method based on wireless communication provided by the present invention has the following beneficial effects:

[0018] 1. The present invention detects that when the A phase passes through the zero point through the concentrator module, the time data is collected and converted into binary data. At the same time, the concentrator module transmits the converted binary data to the analysis module. At the same time, the smart meter module is installed on a phase of the three-phase power grid. When the smart meter module detects the zero-crossing signal of the phase, the time data is collected and converted into binary data. At the same time, the smart meter module transmits the binary data to the analysis module. The analysis module receives the binary data transmitted by the concentrator module and the smart meter module. The analysis module calculates and analyzes the two sets of binary data and transmits the two sets of calculation results to the processing center. After the processing center receives the two sets of calculation results transmitted by the analysis module, if both sets of data results are zero, it is judged as passed. By converting the time data into binary data for data transmission, the error detection efficiency can be improved, the interference of transmission on binary data can be reduced, and the reliability and efficiency of data transmission can be effectively improved. At the same time, the data processing process can be simplified and the complexity of data processing can be reduced. At the same time, the analysis module is used to calculate and analyze the data transmitted by the concentrator module and the smart meter module, instead of digitally comparing the data transmitted by the concentrator module and the smart meter module, which simplifies the data processing process and improves the processing efficiency of the data transmitted by the concentrator module and the smart meter module.

[0019] 2. The present invention converts the time data into data B through binary through the concentrator module, imports data B into C=B17+B2+1, and then the concentrator module adds the calculated data C to the end of data B, so that E=B+C, and then the concentrator module transmits data E and data C to the analysis module. At the same time, the smart meter module converts the time data into data G through binary, and imports G into H=G 17 +G 2 +1, then the smart meter module appends the calculated data H to the end of the data G, so that K=G+H, then the concentrator module transmits the data K and data H to the analysis module, after the analysis module receives the data E and data C sent by the calculator module, the analysis module calculates E / C, and transmits the calculation result to the processing center, at the same time, after the analysis module receives the data K and data H sent by the smart meter module, the analysis module calculates K / H, and transmits the calculation result to the processing center, the analysis module does not need to perform digital comparison on the data, which effectively simplifies the data processing process, reduces the system complexity, and also speeds up the data processing.

[0020] 3. The present invention calculates the time of identifying the phase zero point of the concentrator module and the time of identifying the phase zero point of the smart meter module through a calculation module. If the time of identifying the phase zero point of the concentrator module is equal to the time of identifying the phase zero point of the smart meter module, it is determined that the smart meter module is installed in phase A. If the time of identifying the phase zero point of the smart meter module is delayed by T / 3 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase B. If the time of identifying the phase zero point of the smart meter module is delayed by T / 6 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase C. The calculation mechanism effectively ensures the accuracy of phase determination, effectively prevents data processing problems caused by phase errors, improves the stability and reliability of the system, simplifies the process of phase determination, improves the intelligence level of the smart grid system to a certain extent, and provides strong technical support for the operation of the smart grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A flowchart of a smart meter phase identification method based on wireless communication provided by the present invention;

[0022] Figure 2 A system block diagram of a smart meter phase identification method based on wireless communication provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the operation principle of the smart meter phase identification method based on wireless communication provided by the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Please refer to Figure 1 , Figure 2 as well as Figure 3 ,in, Figure 1 A flowchart of a smart meter phase identification method based on wireless communication provided by the present invention; Figure 2 A system block diagram of a smart meter phase identification method based on wireless communication provided by the present invention; Figure 3 This is a schematic diagram of the operation principle of the smart meter phase identification method based on wireless communication provided by the present invention.

[0026] In the specific implementation process, Figure 1 , Figure 2 as well as Figure 3 As shown, a smart meter phase identification method based on wireless communication includes:

[0027] Step 1, data acquisition, the concentrator module is installed on the three-phase electricity of the power grid, and the concentrator module is connected to the A phase, B phase and C phase of the three-phase electricity respectively. When the concentrator module detects that the A phase passes through the zero point, it collects its time data and converts its time data into binary data B. The concentrator module calculates and encodes the binary data B to calculate data E and data C. The concentrator module transmits data E and data C to the analysis module. At the same time, a smart meter module is installed on a phase of the three-phase electricity of the power grid. When the smart meter module detects the zero-crossing signal of the phase, it collects its time data and converts its time data into binary data G. The smart meter module calculates and encodes the binary data G to calculate data K and data H. The smart meter module transmits data K and data H to the analysis module.

[0028] Step 2, data processing, after the analysis module receives the data E and data C sent by the calculator module, the analysis module calculates the data E and data C, and transmits its calculation structure to the processing center. At the same time, after the analysis module receives the data K and data H sent by the smart meter module, the analysis module calculates the data K and data H, and transmits its calculation results to the processing center;

[0029] Step 3: Data determination: After the processing center receives the calculation results of data E and data C and the calculation results of data K and data H transmitted by the analysis module, if the two sets of data results are both zero, the determination is passed. The processing center issues a transmission instruction to the concentrator module and the smart meter module, so that the concentrator module and the smart meter module transmit data E, data C, data K and data H to the calculation module respectively. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data.

[0030] If all or one of the results of data E and data C and the results of data K and data H are not zero, the processing center causes the module corresponding to the non-zero data to re-convert the identified zero-bit time point into binary, and import the calculation again, and transmit the result to the analysis module for another determination. The analysis module then transmits the result of the second determination to the processing center. If the determination is passed, the processing center issues an instruction to cause the concentrator module and the smart meter module to transmit data E, data C, data K and data H to the calculation module. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data. If the determination is not passed again, the processing center sends a message to the staff to cause the staff to maintain the corresponding module that has not passed the determination.

[0031] Step 4, phase determination, after the calculation module receives the data E and data C transmitted by the concentrator module, the calculation module calculates data X through data E and data C, and the calculation module calculates the time of identifying the phase zero point transmitted by the concentrator module through data X. After the calculation module receives the K and H data transmitted by the smart meter module, the calculation module calculates data Y through K and H, and the calculation module calculates the time of identifying the phase zero point transmitted by the smart meter module through data Y. The calculation module calculates the time of identifying the phase zero point of the concentrator module and the time of identifying the phase zero point of the smart meter module, and the calculation module determines the phase zero point of the concentrator module according to the internally set determination conditions. The calculation result of the phase zero point identification time of the block and the phase zero point identification time of the smart meter module is used for judgment. If the phase zero point identification time of the concentrator module is equal to the phase zero point identification time of the smart meter module, it is determined that the smart meter module is installed in phase A. If the phase zero point identification time of the smart meter module is delayed by T / 3 and passes through the zero point than the phase zero point identification time of the concentrator module, it is determined that the smart meter module is installed in phase B. If the phase zero point identification time of the smart meter module is delayed by T / 6 and passes through the zero point than the phase zero point identification time of the concentrator module, it is determined that the smart meter module is installed in phase C. The calculation module transmits the judgment result to the processing center.

[0032] When the concentrator module detects that phase A passes through zero, the concentrator module calls the time when phase A passes through zero time data. The concentrator module converts the time data into data B through binary and imports data B into C=B 17 +B 2 +1, the concentrator module then appends the calculated data C to the end of data B, so that E=B+C, and then the concentrator module transmits data E and data C to the analysis module;

[0033] After the smart meter module detects the zero-crossing signal of the phase, the smart meter module transmits the time of detecting the zero-crossing signal of the phase as time data. The smart meter module converts the time data into data G through binary, and imports G into H=G 17 +G 2 +1, the smart meter module then appends the calculated data H to the end of the data G, so that K = G + H, and then the concentrator module transmits the data K and the data H to the analysis module;

[0034] Phase zero refers to a special point in the AC voltage waveform. This point marks the beginning or end of a complete cycle. Phase zero specifically refers to the point where the voltage waveform changes from negative to positive or from positive to negative. Since AC is cyclical, there are two phase zeros in each cycle: one is the zero crossing from negative to positive, and the other is the zero crossing from positive to negative.

[0035] After the analysis module receives data E and data C sent by the calculator module, the analysis module calculates E / C and transmits the calculation result to the processing center. At the same time, after the analysis module receives data K and data H sent by the smart meter module, the analysis module calculates K / H and transmits the calculation result to the processing center.

[0036] The processing center receives the results of E / C and K / H transmitted by the analysis module. If the results of the two sets of data are both zero, the judgment is passed. The processing center issues a transmission instruction to the concentrator module and the smart meter module, so that the concentrator module and the smart meter module transmit data E, data C, data K and data H to the calculation module. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data. If all or one of the results of E / C and K / H is not zero, the processing center causes the module corresponding to the non-zero data to re-convert the identified zero-bit time point into binary, and import the calculation again, and transmit the result to the analysis module for another judgment. The analysis module then transmits the result of the second judgment to the processing center. If the judgment is passed, the processing center issues an instruction to cause the concentrator module and the smart meter module to transmit data E, data C, data K and H to the calculation module. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data. If the judgment is not passed again, the processing center sends a message to the staff so that the staff can maintain the corresponding module that has not passed the judgment.

[0037] After the calculation module receives data E and data C transmitted by the concentrator module, the calculation module obtains data X by subtracting the mantissa of data E from data C, and the calculation module converts data X into the time of identifying the phase zero point transmitted by the concentrator module through binary. After the calculation module receives data K and data H transmitted by the smart meter module, the calculation module obtains data Y by subtracting the mantissa of data K from data H, and the calculation module converts data Y into the time of identifying the phase zero point transmitted by the smart meter module through binary.

[0038] The calculation module calculates the time of identifying the phase zero point of the concentrator module and the time of identifying the phase zero point of the smart meter module. If the time of identifying the phase zero point of the concentrator module is equal to the time of identifying the phase zero point of the smart meter module, it is determined that the smart meter module is installed in phase A. If the time of identifying the phase zero point of the smart meter module is delayed by T / 3 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase B. If the time of identifying the phase zero point of the smart meter module is delayed by T / 6 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase C. The calculation module transmits the determination result to the processing center.

[0039] The AC cycle in China is 50HZ, so each cycle is T=1 / 50=0.02 seconds. When phase A passes through zero, phase C will pass through zero after T / 6, and phase B will pass through zero after T / 3.

[0040] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0041] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A smart meter phase identification method based on wireless communication, characterized in that: include: Step 1, data acquisition, the concentrator module is connected to the A phase, B phase and C phase of the three-phase electricity respectively, when the concentrator module detects that the A phase passes through the zero point, its time data is collected, and its time data is converted into binary data, and the concentrator module transmits the converted binary data to the analysis module, and the smart meter module is installed on a phase of the three-phase electricity of the power grid, when the smart meter module detects the zero-crossing signal of the phase, its time data is collected, and its time data is converted into binary data, and the smart meter module transmits the binary data to the analysis module; Step 2: Data processing: the analysis module receives the binary data transmitted by the concentrator module and the smart meter module, performs calculation and analysis on the two sets of binary data, and transmits the two sets of calculation results to the processing center; Step 3: Data determination: After the processing center receives the two sets of calculation results transmitted by the analysis module, if both sets of data results are zero, the determination is passed. The processing center issues a transmission instruction to the concentrator module and the smart meter module, so that the concentrator module and the smart meter module transmit the binary data to the calculation module respectively. Step 4, phase determination, after the calculation module receives the binary data transmitted by the concentrator module and the smart meter module, the calculation module converts the two sets of binary data, converts the binary data into time data, and calculates the two sets of time data. The calculation module calculates the three-phase electrical phase of the smart meter module installed according to the calculation results based on the internally set determination conditions.

2. The smart meter phase identification method based on wireless communication according to claim 1, characterized in that: When the concentrator module detects that phase A passes through zero, the concentrator module refers to the time when phase A passes through zero as time data. The concentrator module converts the time data into data B through binary, and imports data B into C=B 17 +B 2 +1, the concentrator module then appends the calculated data C to the end of data B, so that E=B+C, and then the concentrator module transmits data E and data C to the analysis module.

3. The smart meter phase identification method based on wireless communication according to claim 2 is characterized in that: After the smart meter module detects the zero-crossing signal of the phase, the smart meter module transmits the time when it detects the zero-crossing signal of the phase as time data, and the smart meter module converts the time data into data G through binary, and imports G into H=G 17 +G 2 +1, the smart meter module then appends the calculated data H to the end of the data G, so that K=G+H, and then the concentrator module transmits the data K and the data H to the analysis module.

4. The smart meter phase identification method based on wireless communication according to claim 3 is characterized in that: After the analysis module receives data E and data C sent by the calculator module, the analysis module calculates E / C and transmits the calculation result to the processing center. At the same time, after the analysis module receives data K and data H sent by the smart meter module, the analysis module calculates K / H and transmits the calculation result to the processing center.

5. The smart meter phase identification method based on wireless communication according to claim 4 is characterized in that: The processing center receives the results of E / C and K / H transmitted by the analysis module. If the results of the two sets of data are both zero, the judgment is passed. The processing center issues a transmission instruction to the concentrator module and the smart meter module, so that the concentrator module and the smart meter module transmit data E, data C, data K and data H to the calculation module. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data. If all or one of the results of E / C and K / H is not zero, the processing center causes the module corresponding to the non-zero data to re-convert the identified zero-bit time point into binary, and import the calculation again, and transmit the result to the analysis module for another judgment. The analysis module then transmits the result of the second judgment to the processing center. If the judgment is passed, the processing center issues an instruction so that the concentrator module and the smart meter module transmit data E, data C, data K and H to the calculation module. At the same time, the processing center causes the concentrator module and the smart meter module to delete the collected data. If the judgment is not passed again, the processing center sends information to the staff so that the staff can maintain the corresponding module that has not passed the judgment.

6. The smart meter phase identification method based on wireless communication according to claim 5, characterized in that: After the calculation module receives data E and data C transmitted by the concentrator module, the calculation module obtains data X by subtracting the mantissa of data E from data C, and the calculation module converts data X into the time of identifying the phase zero point transmitted by the concentrator module through binary. After the calculation module receives data K and data H transmitted by the smart meter module, the calculation module obtains data Y by subtracting the mantissa of data K from data H, and the calculation module converts data Y into the time of identifying the phase zero point transmitted by the smart meter module through binary.

7. The smart meter phase identification method based on wireless communication according to claim 6, characterized in that: The calculation module calculates the time of identifying the phase zero point of the concentrator module and the time of identifying the phase zero point of the smart meter module. If the time of identifying the phase zero point of the concentrator module is equal to the time of identifying the phase zero point of the smart meter module, it is determined that the smart meter module is installed in phase A. If the time of identifying the phase zero point of the smart meter module is delayed by T / 3 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase B. If the time of identifying the phase zero point of the smart meter module is delayed by T / 6 and passes through the zero point than the time of identifying the phase zero point of the concentrator module, it is determined that the smart meter module is installed in phase C. The calculation module transmits the determination result to the processing center.

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