Method for improving station area recognition accuracy and station area recognition performance detection device

Abstract

The present application discloses a substation identification performance detection device and method, a control module and method, and relates to the field of electricity consumption information collection. The device can solve the problem of inaccurate substation identification when HPLC communication modules from different manufacturers are mixed and networked. The detection device includes: a control module, a standard communication module, and a communication module under test; the control module is used to control the standard communication module and the communication module under test to intercept multiple groups of standard sine waves in the same time period; the standard communication module is used to collect the standard network reference time at the moment when the standard sine wave crosses zero, and the communication module under test is used to collect the measured network reference time at the moment when the standard sine wave crosses zero, and send the standard network reference time and the measured network reference time to the control module accordingly; the control module is used to calculate the absolute deviation index and the collection accuracy index based on the standard network reference time and the measured network reference time. When both are qualified, the substation identification performance of the communication module under test passes the test.

Description

Technical Field

[0001] The present application relates to the field of electricity consumption information collection, and in particular to a substation identification performance detection device and method, and a control module and method. Background Art

[0002] With the continuous construction of smart grids, the low-voltage distribution network is becoming more and more intelligent. However, during the construction and transformation of the low-voltage distribution network, there are often problems such as untimely updating of user information, incorrect updates or no updates, which lead to discrepancies between the low-voltage substation user information and the actual connected users. This will lead to various problems such as failure to collect electricity consumption information, so substation identification is needed.

[0003] Currently, high-speed power line communication (HPLC) technology is used for substation identification. This identification principle is based on the characteristic that the zero-crossing time deviations of carrier nodes in the same substation are relatively small, while the zero-crossing time deviations of carrier nodes in different substations are relatively large due to differences in load, noise, and other power line environments. Each node (including master and slave nodes) collects and compares the Network Time Base (NTB) information at the zero-crossing time. Each slave node can then identify the master node with the most similar zero-crossing time and determine that it belongs to the same substation as the master node, thus completing substation identification. However, due to differences in the performance of the main chips, component performance, circuit design, and software algorithms designed by different HPLC communication module manufacturers, HPLC communication modules from different manufacturers do not consistently determine the NTB time at the zero-crossing time. If HPLC communication modules from different manufacturers are mixed and installed, inaccurate substation identification will occur. Summary of the Invention

[0004] In view of this, the present application provides a substation identification performance detection device and method, a control module and method, which can solve the problem of inaccurate substation identification when HPLC communication modules from different manufacturers are mixed and networked.

[0005] To achieve the above-mentioned purpose, the present application provides a station area identification performance detection device, the detection device comprising: a control module, a standard communication module, and a communication module to be tested;

[0006] The control module is used to control the standard communication module and the communication module under test to intercept multiple groups of standard sine waves in the same period, wherein each group of standard sine waves in the same period includes the ones intercepted by the standard communication module and the ones intercepted by the communication module under test;

[0007] The standard communication module is used to collect the standard network reference time at the zero-crossing moment of the standard sine wave and send the standard network reference time to the control module; the tested communication module is used to collect the tested network reference time at the zero-crossing moment of the standard sine wave and send the tested network reference time to the control module;

[0008] The control module is used to calculate an absolute deviation index and an acquisition accuracy index based on the standard network reference time and the tested network reference time. When both the absolute deviation index and the acquisition accuracy index are qualified, the station area identification performance of the tested communication module passes the test.

[0009] Optionally, the control module includes: a difference sequence calculation unit, an absolute deviation index calculation unit, and an acquisition accuracy index calculation unit;

[0010] The difference sequence calculation unit is used to calculate the difference between the standard network reference time and the measured network reference time in multiple groups of the same time period, obtain a difference sequence, and send it to the absolute deviation index calculation unit and the acquisition accuracy index calculation unit;

[0011] The absolute deviation index calculation unit is used to obtain the maximum value and the minimum value of the difference sequence, and calculate the difference between the maximum value and the minimum value to obtain the absolute deviation index;

[0012] The acquisition accuracy index calculation unit is used to calculate the standard deviation of the difference sequence to obtain the acquisition accuracy index.

[0013] Optionally, the control module further includes: a judgment unit;

[0014] The judgment unit is used to receive the absolute deviation index, judge that the absolute deviation index is qualified when the absolute deviation index is less than a first preset threshold, and judge that the acquisition accuracy index is qualified when the acquisition accuracy index is less than a second preset threshold.

[0015] Optionally, the detection device further includes: a transmitter;

[0016] The transmitter is configured to receive a start instruction sent by the control module, and in response to the start instruction, send the standard sine wave to the standard communication module and the communication module under test simultaneously;

[0017] The transmitter is further configured to receive a stop instruction sent by the control module, and stop sending the standard sine wave in response to the stop instruction.

[0018] Optionally, the detection device further comprises: a shielding box;

[0019] The shielding box is used to group the standard communication module and the communication module under test into the same local area network, and isolate the local area network from the outside world.

[0020] According to another aspect of the present application, a method for detecting the performance of a substation identification is also provided. The method is applied to the above-mentioned detection device, comprising:

[0021] Obtaining the standard network reference time at the zero-crossing moment collected by the standard communication module and the measured network reference time at the zero-crossing moment collected by the measured communication module in the same period;

[0022] Calculating the difference between the standard network reference time and the measured network reference time in the same time period to obtain a difference sequence;

[0023] Calculating an absolute deviation index and an acquisition accuracy index according to the difference sequence;

[0024] When both the absolute deviation index and the acquisition accuracy index are qualified, it is determined that the station area identification performance of the module under test passes the test.

[0025] Optionally, the calculating of an absolute deviation performance index and an acquisition accuracy performance index according to the difference sequence includes:

[0026] Obtaining the maximum value and the minimum value of the difference sequence, and calculating the difference between the maximum value and the minimum value to obtain the absolute deviation index;

[0027] The standard deviation of the difference sequence is calculated to obtain the acquisition accuracy index.

[0028] According to another aspect of the present application, a control module is further provided, wherein the control module is communicatively connected with the standard communication module and the communication module under test;

[0029] The control module is used to control the standard communication module and the communication module under test to intercept multiple groups of standard sine waves in the same period, wherein each group of standard sine waves in the same period includes the ones intercepted by the standard communication module and the ones intercepted by the communication module under test;

[0030] The control module is also used to calculate the absolute deviation index and the acquisition accuracy index based on the standard network reference time and the measured network reference time. When the absolute deviation index and the acquisition accuracy index are both qualified, the station area identification performance of the measured communication module passes the test; wherein, the standard network reference time is the time when the standard communication module collects the zero-crossing moment of the standard sine wave, and the measured network reference time is the time when the measured communication module collects the zero-crossing moment of the standard sine wave.

[0031] According to another aspect of the present application, a method for detecting the performance of a substation identification is provided, which is applied to the above-mentioned control module and includes:

[0032] Controlling the standard communication module and the communication module under test to intercept multiple groups of standard sine waves in the same time period, wherein each group of standard sine waves in the same time period includes the ones intercepted by the standard communication module and the ones intercepted by the communication module under test;

[0033] The absolute deviation index and the acquisition accuracy index are calculated based on the standard network reference time and the measured network reference time. When both the absolute deviation index and the acquisition accuracy index are qualified, the station area identification performance of the measured communication module passes the test; wherein, the standard network reference time is the time when the standard communication module collects the zero-crossing moment of the standard sine wave, and the measured network reference time is the time when the measured communication module collects the zero-crossing moment of the standard sine wave.

[0034] According to another aspect of the present application, a computer storage medium is provided, on which a computer program is stored. When the computer program is executed by the control module, the steps of the above-mentioned station area identification performance detection method applied to the control module are implemented.

[0035] The present application provides a substation identification performance detection device and method, a control module and method, and the detection device includes: a control module, a standard communication module, and a communication module under test; the control module is used to control the standard communication module and the communication module under test to simultaneously intercept multiple standard sine waves; the standard communication module is used to collect the standard network reference time when the standard sine wave passes through zero, and send the standard network reference time to the control module, and the communication module under test is used to collect the tested network reference time when the standard sine wave passes through zero, and send the tested network reference time to the control module; the control module is used to calculate the absolute deviation index and the acquisition accuracy index based on the standard network reference time and the tested network reference time. When the absolute deviation index and the acquisition accuracy index are both qualified, the substation identification performance of the communication module under test passes the test.

[0036] The present application calculates whether the absolute deviation index and the acquisition accuracy index are qualified based on the tested network reference time and the standard network reference time, so as to judge whether the station performance of the tested communication module has passed the test. According to the same test method, HPLC communication modules of multiple different manufacturers can be used as tested communication modules respectively, and the HPLC communication modules of different manufacturers that have passed the test are screened out. Since the HPLC communication modules of different manufacturers that have passed the test have small deviations from the standard network reference time at the zero-crossing moment collected by the standard module (that is, the absolute deviation index and the acquisition accuracy index are both qualified), the deviations of the network reference times at the zero-crossing moment collected between the HPLC communication modules of different manufacturers that have passed the test are small. Therefore, when these HPLC communication modules of different manufacturers that have passed the test are mixed and installed (that is, the master node and the slave node are installed with HPLC communication modules of different manufacturers that have passed the test), the problem of large deviations in the network reference time at the zero-crossing moment collected due to differences in the main chip performance, the performance of the components used, the circuit design and the software algorithm designed by different HPLC communication module manufacturers is avoided, the accuracy of station identification is improved, and the HPLC station identification function is made more universal, saving a huge amount of manpower and material resources.

[0037] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0039] Figure 1 A schematic structural diagram of a device for detecting performance of a substation area identification provided by an embodiment of the present invention is shown;

[0040] Figure 2 A schematic diagram showing a flow chart of a method for detecting performance of a substation area identification provided by an embodiment of the present invention is shown;

[0041] Figure 3 A schematic structural diagram of a control module provided by an embodiment of the present invention is shown;

[0042] Figure 4 A schematic flow chart of another method for detecting performance of a substation area identification provided by an embodiment of the present invention is shown;

[0043] In the picture;

[0044] 1-control module, 11-difference sequence calculation unit, 12-absolute deviation index calculation unit, 13-acquisition accuracy index calculation unit, 14-judgment unit;

[0045] 2- Standard communication module;

[0046] 3-Communication module under test;

[0047] 4- Transmitter;

[0048] 5-Shielding box. DETAILED DESCRIPTION

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0051] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0053] It should be noted that substation identification is to determine which master node and which slave nodes belong to the same substation. Due to the characteristic that "the zero-crossing time deviation of the carrier node in the same substation is small, and the zero-crossing time deviation of the carrier nodes in different substations is large due to differences in load, noise and other power line environments in different substations", the network reference time of the zero-crossing time of the master node and the slave node is collected. If the network reference time of a slave node is very similar to that of a master node, then it can be determined that the slave node and the master node belong to the same substation, thereby completing the substation identification.

[0054] And the network reference time of the zero-crossing moment of the master node and the slave node is collected by installing HPLC communication modules on the master node and the slave node. If the master node and the slave node are all installed with the HPLC communication modules of the same manufacturer, because the circuit board design, component selection, chip performance and other aspects of the same manufacturer are all the same, the network reference time of the zero-crossing moment collected using the HPLC communication modules of the same manufacturer will not produce differences due to circuit board design, component selection, chip performance and other aspects, so the accuracy of performing station area identification is very high, almost 100% accuracy. And the present application is directed to if different manufacturers' HPLC communication modules are needed to perform station area identification, that is, different manufacturers' HPLC communication modules are installed on the master node and the slave node, because different manufacturers' HPLC communication modules have differences in circuit board design, component selection, chip performance and other aspects, therefore, the master node and the slave node that may originally belong to the same station area, but the similarity of the network reference time of the master node and the slave node collected is low, so the station area identification accuracy is not high.

[0055] The following combination Figure 1 The following describes a device for detecting performance of a station area identification according to some embodiments of the present invention.

[0056] The embodiment of the present application provides a device for detecting the performance of a station area identification, such as Figure 1As shown, the detection device includes: a control module 1, a standard communication module 2, and a tested communication module 3; the control module 1 is used to control the standard communication module 2 and the tested communication module 3 to intercept multiple groups of standard sine waves in the same period, wherein each group of standard sine waves in the same period includes the standard communication module intercepted and the tested communication module intercepted; the standard communication module 2 is used to collect the standard network reference time at the zero-crossing moment of the standard sine wave and send the standard network reference time to the control module 1; the tested communication module 3 is used to collect the tested network reference time at the zero-crossing moment of the standard sine wave and send the tested network reference time to the control module 1; the control module 1 is used to calculate the absolute deviation index and the acquisition accuracy index based on the standard network reference time and the tested network reference time. When the absolute deviation index and the acquisition accuracy index are both qualified, the tested communication module 3 has passed the test for the station area identification performance. Specifically, multiple HPLC communication modules from different manufacturers can be used as the tested communication modules 3, and the HPLC communication modules from different manufacturers that pass the test can be screened out. Then, these HPLC communication modules from different manufacturers that pass the test can be mixed and installed for station area identification. When at least one of the absolute deviation index and the acquisition accuracy index fails to meet the requirements, the area identification performance of the tested communication module 3 cannot pass the test, and the tested communication module 3 will not be used for mixed area identification with HPLC communication modules of other manufacturers (including those with passed the test and those with failed the test).

[0057] In specific application scenarios, such as Figure 1 As shown, the detection device further includes a transmitter 4. The transmitter 4 is configured to receive a start command from the control module 1. In response to the start command, the transmitter 4 simultaneously transmits a standard sine wave to the standard communication module 2 and the communication module under test 3. The transmitter 4 is also configured to receive a stop command from the control module 1. In response to the stop command, the transmitter 4 stops transmitting the standard sine wave.

[0058] Among them, after the transmitter 4 responds to the start instruction and before responding to the stop instruction, the transmitter 4 continues to send the standard sine wave to the standard communication module 2 and the communication module under test 3 at the same time, and the start time and end time of the standard communication module 2 and the communication module under test 3 intercepting the standard sine wave are controlled by the control module 1.

[0059] The zero-crossing moment refers to the time when the voltage amplitude reaches zero, and the network reference time at the zero-crossing moment refers to the network reference time when the voltage amplitude reaches zero. Control module 1 sends a start command to transmitter 4. Upon receiving the start command, transmitter 4 simultaneously transmits a standard sine wave to both standard communication module 2 and the communication module under test 3. This standard sine wave is transmitted because it provides a noise-free sine wave, i.e., the standard sine wave crosses zero at the zero-crossing moment. This simultaneous transmission of the standard sine wave to both standard communication module 2 and the communication module under test 3 is because standard communication module 2 serves as the standard basis for parameter testing of the communication module under test.

[0060] Correspondingly, such as Figure 1 As shown, the control module 1 includes: a difference sequence calculation unit 11, an absolute deviation index calculation unit 12, and an acquisition accuracy index calculation unit 13; the difference sequence calculation unit 11 is used to calculate the difference between multiple groups of standard network reference time and the measured network reference time in the same time period, obtain a difference sequence, and send it to the absolute deviation index calculation unit 12 and the acquisition accuracy index calculation unit 13; the absolute deviation index calculation unit 12 is used to obtain the maximum and minimum values ​​of the difference sequence, and calculate the difference between the maximum and minimum values ​​to obtain the absolute deviation index; the acquisition accuracy index calculation unit 13 is used to calculate the standard deviation of the difference sequence to obtain the acquisition accuracy index.

[0061] Specifically, the control module 1 controls the standard communication module 2 and the communication module under test 3 to intercept multiple groups of standard sine waves of the same time period (the control module 1 controls the start time and end time of the standard sine waves intercepted by the standard communication module 2 and the communication module under test 3). Each group of standard sine waves of the same time period includes the standard network reference time intercepted by the standard communication module 2 and the standard network reference time intercepted by the communication module under test 3. Then, in one group, the standard communication module 2 can collect the standard network reference time of at least two zero-crossing moments, wherein the standard network time of these two zero-crossing moments includes the rising edge (the zero-crossing moment during the rising process of the standard sine wave) and the falling edge (the zero-crossing moment during the falling process of the standard sine wave). The number of the tested network reference time collected by the communication module under test 3 is the same as the number of the standard network reference time collected by the standard communication module 2. Taking the standard network reference time of two zero-crossing moments collected by the standard communication module 2 in a group as an example, each group has two pairs of data, namely the standard network reference time of the rising edge and the tested network reference time, and the standard network reference time of the falling edge and the tested network reference time. The difference sequence calculation unit 11 of the control module 1 calculates the difference between the standard network reference time of the rising edge of the same group and the network reference time of the measured network, and calculates the difference between the standard network reference time of the falling edge of the same group and the network reference time of the measured network. For example, the control module 1 intercepts 150 groups of standard sine waves in the same time period, so the difference sequence calculation unit 11 can calculate 150*2=300 differences. These differences together constitute a difference sequence. The difference sequence is sent to the absolute deviation index calculation unit 12 to calculate the absolute deviation index of the module under test, and is sent to the acquisition accuracy index calculation unit 13 to calculate the acquisition accuracy index of the module under test.

[0062] Correspondingly, such as Figure 1 As shown, the control module 1 also includes: a judgment unit 14; the judgment unit 14 is used to receive an absolute deviation index, and judge that the absolute deviation index is qualified when the absolute deviation index is less than a first preset threshold, and is used to receive an acquisition accuracy index, and judge that the acquisition accuracy index is qualified when the acquisition accuracy index is less than a second preset threshold.

[0063] In specific application scenarios, such as Figure 1 As shown, the detection device further includes: a shielding box 5; the shielding box 5 is used to group the standard communication module 2 and the communication module under test 3 into the same local area network, and isolate the local area network from the outside world.

[0064] In a specific application scenario, for example, a communication module is placed in the concentrator's data acquisition device, and a communication module is placed in each energy meter. A concentrator and multiple energy meters form the same local area network, that is, the concentrator is the master node, and each energy meter is a slave node. When the standard communication module 2 and the communication module under test 3 are grouped into the same local area network, the placement is as follows:

[0065] First, when the standard communication module 2 has been placed in the collection device of the concentrator, the communication module 3 under test can no longer be placed in the collection device of the concentrator and can only be placed in any electric energy meter. Similarly, when the communication module 3 under test has been placed in the collection device of the concentrator, the standard communication module 2 can no longer be placed in the collection device of the concentrator and can only be placed in any electric energy meter.

[0066] Second, if the standard communication module 2 is already placed in one of the energy meters, then the communication module 3 under test can be placed in the concentrator's data acquisition device, or in another energy meter besides the one where the standard communication module 2 is placed. Similarly, if the communication module 3 under test is already placed in one of the energy meters, then the standard communication module 2 can be placed in the concentrator's data acquisition device, or in another energy meter besides the one where the communication module 3 under test is placed.

[0067] The present invention provides a method for detecting the performance of a station area, see Figure 2 , which may include the following steps:

[0068] 201. Obtain a standard network reference time at a zero-crossing moment collected by a standard communication module and a measured network reference time at a zero-crossing moment collected by a measured communication module in the same period.

[0069] For this embodiment, as an implementation method, the standard communication module can collect standard network reference times at at least two zero-crossing moments, wherein the standard network times at these two zero-crossing moments include a rising edge (the zero-crossing moment during the rising process of the standard sine wave) and a falling edge (the zero-crossing moment during the falling process of the standard sine wave). The number of tested network reference times collected by the tested communication module in the same time period is the same as the number of standard network reference times collected by the standard communication module. Taking the standard network reference time collected at two zero-crossing moments by the standard communication module in a group as an example, each group has two pairs of data, namely the standard network reference time of the rising edge and the tested network reference time, and the standard network reference time of the falling edge and the tested network reference time.

[0070] 202. Calculate the difference between multiple groups of standard network reference time and the measured network reference time in the same time period to obtain a difference sequence.

[0071] For this embodiment, as an implementation method, taking the example of two pairs of data in each group in step 201 of the embodiment, the difference between the standard network reference time of the rising edge and the measured network reference time of the rising edge in each group is calculated, and the difference between the standard network reference time of the falling edge and the measured network reference time of the falling edge in the group is calculated, thereby obtaining two difference values. Taking 150 groups of data as an example, the total number of difference values ​​is 150*2=300, and these 300 difference values ​​constitute a difference sequence.

[0072] 203. Calculate the absolute deviation index and acquisition accuracy index based on the difference sequence.

[0073] For this embodiment, as an implementation method, the absolute deviation index and the acquisition accuracy performance index are calculated based on the difference sequence, including: obtaining the maximum and minimum values ​​of the difference sequence, calculating the difference between the maximum and minimum values ​​to obtain the absolute deviation index, and calculating the standard deviation of the difference sequence to obtain the acquisition accuracy index.

[0074] 204. When both the absolute deviation index and the acquisition accuracy index are qualified, it is determined that the station area identification performance of the module under test has passed the test.

[0075] In this embodiment, as an implementation method, the absolute deviation index is determined to be qualified when it is less than a first preset threshold, and the acquisition accuracy index is determined to be qualified when it is less than a second preset threshold. Only when both the absolute deviation index and the acquisition accuracy index are qualified is the station area identification performance of the tested module determined to have passed the test. For example, the first preset threshold may be 100 microseconds (100us), and the second preset threshold may be 1 microsecond (1us).

[0076] According to the same test method, HPLC communication modules from multiple different manufacturers can be used as tested communication modules, and HPLC communication modules from different manufacturers that have passed the test can be screened out. Since the HPLC communication modules from different manufacturers that have passed the test have a small deviation from the standard network reference time at the zero-crossing moment collected by the standard module (that is, the absolute deviation index and the acquisition accuracy index are both qualified), the network reference time deviation at the zero-crossing moment collected between the HPLC communication modules from different manufacturers that have passed the test is small. Therefore, when these HPLC communication modules from different manufacturers that have passed the test are mixedly installed (that is, the master node and the slave node are installed with HPLC communication modules from different manufacturers that have passed the test), the problem of large deviation in the network reference time at the zero-crossing moment collected due to differences in the main chip performance, component performance, circuit design and software algorithm designed by different HPLC communication module manufacturers is avoided, the accuracy of station area identification is improved, and the HPLC station area identification function is made more universal, saving a huge amount of manpower and material resources.

[0077] The following combination Figure 3A control module according to some embodiments of the present invention is described.

[0078] The control module 1 is communicatively connected with the standard communication module 2 and the communication module under test 3; the control module 1 is used to control the standard communication module 2 and the communication module under test 3 to intercept multiple groups of standard sine waves of the same time period, wherein each group of standard sine waves of the same time period includes those intercepted by the standard communication module 2 and those intercepted by the communication module under test 3; the control module 1 is also used to calculate the absolute deviation index and the acquisition accuracy index based on the standard network reference time and the network reference time under test. When the absolute deviation index and the acquisition accuracy index are both qualified, the station area identification performance of the communication module under test 3 passes the test; wherein, the standard network reference time is the time when the standard communication module 2 collects the zero-crossing moment of the standard sine wave, and the network reference time under test is the time when the communication module under test collects the zero-crossing moment of the standard sine wave.

[0079] Among them, such as Figure 3 As shown, the control standard communication module 2 and the communication module under test 3 are grouped into the same local area network using a shielding box 5, and the local area network is isolated from the outside world. For example, a communication module is placed in the collection device of the concentrator, and a communication module is placed in each electric energy meter. A concentrator and multiple electric energy meters form the same local area network, that is, the concentrator is the master node, and each electric energy meter is a slave node. When the standard communication module 2 and the communication module under test 3 are grouped into the same local area network, the placement is as follows:

[0080] First, when the standard communication module 2 has been placed in the collection device of the concentrator, the communication module 3 under test can no longer be placed in the collection device of the concentrator and can only be placed in any electric energy meter. Similarly, when the communication module 3 under test has been placed in the collection device of the concentrator, the standard communication module 2 can no longer be placed in the collection device of the concentrator and can only be placed in any electric energy meter.

[0081] Second, if the standard communication module 2 is already placed in one of the energy meters, then the communication module 3 under test can be placed in the concentrator's data acquisition device, or in another energy meter besides the one where the standard communication module 2 is placed. Similarly, if the communication module 3 under test is already placed in one of the energy meters, then the standard communication module 2 can be placed in the concentrator's data acquisition device, or in another energy meter besides the one where the communication module 3 under test is placed.

[0082] Specifically, the control module 1 sends an interception instruction to control the standard communication module 2 and the communication module under test 3 to intercept multiple groups of standard sine waves in the same time period (the control module 1 will control the start time and end time of the standard communication module 2 and the communication module under test 3 to intercept the standard sine waves). Each group of standard sine waves in the same time period includes the standard network reference time intercepted by the standard communication module 2 and the standard network reference time intercepted by the communication module under test 3. Then, in one group, the standard communication module 2 can collect at least two standard network reference times at zero-crossing moments, wherein the standard network times at these two zero-crossing moments include the rising edge (the zero-crossing moment during the rising process of the standard sine wave) and the falling edge (the zero-crossing moment during the falling process of the standard sine wave). The number of the tested network reference times collected by the communication module under test 3 is the same as the number of the standard network reference times collected by the standard communication module 2. Taking the standard network reference time collected at two zero-crossing moments in a group as an example, each group has two pairs of data, namely the standard network reference time and the tested network reference time at the rising edge, and the standard network reference time and the tested network reference time at the falling edge.

[0083] The control module 1 receives the standard network reference time and the measured network reference time, and uses the received standard network reference time and the measured network reference time to calculate the absolute deviation index and the acquisition accuracy index. Specifically, the difference between the standard network reference time and the measured network reference time of the rising edge of the same group is calculated, and the difference between the standard network reference time and the measured network reference time of the falling edge of the same group is calculated. For example, the control module 1 intercepts 150 groups of standard sine waves in the same time period, so the difference sequence calculation unit 11 can calculate 150*2=300 differences. These differences together constitute a difference sequence, obtain the maximum and minimum values ​​of the difference sequence, calculate the difference between the maximum and minimum values ​​to obtain the absolute deviation index, and calculate the standard deviation of the difference sequence to obtain the acquisition accuracy index.

[0084] When both the absolute deviation index and the acquisition accuracy index are qualified, the control module 1 determines that the area identification performance of the tested communication module 3 has passed the test, then the tested communication module 3 that has passed the test can be mixed with other tested communication modules 3 that have passed the test and installed; when at least one of the absolute deviation index and the acquisition accuracy index is unqualified, the control module 1 determines that the area identification performance of the tested communication module 3 cannot pass the test, and the tested communication module 3 that cannot pass the test cannot be mixed with other communication modules and installed, wherein the other communication modules include the tested communication modules 3 that have passed the test and the tested communication modules 3 that cannot pass the test.

[0085] Another method for detecting the performance of a station area identification provided by the present invention is as follows: Figure 4 , which may include the following steps:

[0086] 401. Control the standard communication module and the communication module under test to intercept multiple groups of standard sine waves in the same time period, wherein each group of standard sine waves in the same time period includes those intercepted by the standard communication module and those intercepted by the communication module under test.

[0087] For this embodiment, as an implementation method, the standard communication module can collect standard network reference times at at least two zero-crossing moments, wherein the standard network times at these two zero-crossing moments include a rising edge (the zero-crossing moment during the rising process of the standard sine wave) and a falling edge (the zero-crossing moment during the falling process of the standard sine wave). The number of tested network reference times collected by the tested communication module in the same time period is the same as the number of standard network reference times collected by the standard communication module. Taking the standard network reference time collected at two zero-crossing moments by the standard communication module in a group as an example, each group has two pairs of data, namely the standard network reference time of the rising edge and the tested network reference time, and the standard network reference time of the falling edge and the tested network reference time.

[0088] 402. Calculate an absolute deviation index and an acquisition accuracy index based on the standard network reference time and the measured network reference time. When both the absolute deviation index and the acquisition accuracy index are qualified, the station area identification performance of the measured communication module passes the test.

[0089] The standard network reference time is the time when the standard communication module collects the zero-crossing moment of the standard sine wave, and the measured network reference time is the time when the measured communication module collects the zero-crossing moment of the standard sine wave.

[0090] For this embodiment, as an implementation method, taking the example of two pairs of data in each group in step 201 of the embodiment, the difference between the standard network reference time of the rising edge and the measured network reference time of the rising edge in each group is calculated, and the difference between the standard network reference time of the falling edge and the measured network reference time of the falling edge in the group is calculated, thereby obtaining two difference values. Taking 150 groups of data as an example, the total number of difference values ​​is 150*2=300, and these 300 difference values ​​constitute a difference sequence.

[0091] After obtaining the difference sequence, the maximum and minimum values ​​of the difference sequence are obtained, the difference between the maximum and minimum values ​​is calculated to obtain the absolute deviation index, and the standard deviation of the difference sequence is calculated to obtain the acquisition accuracy index.

[0092] After obtaining the absolute deviation index and the acquisition accuracy index, the absolute deviation index is determined to be qualified when the absolute deviation index is less than a first preset threshold, and the acquisition accuracy index is determined to be qualified when the acquisition accuracy index is less than a second preset threshold. Only when both the absolute deviation index and the acquisition accuracy index are qualified is the station area identification performance of the tested module determined to have passed the test. For example, the first preset threshold may be 100 microseconds (100us), and the second preset threshold may be 1 microsecond (1us).

[0093] According to the same test method, HPLC communication modules from multiple different manufacturers can be used as tested communication modules, and HPLC communication modules from different manufacturers that have passed the test can be screened out. Since the HPLC communication modules from different manufacturers that have passed the test have a small deviation from the standard network reference time at the zero-crossing moment collected by the standard module (that is, the absolute deviation index and the acquisition accuracy index are both qualified), the network reference time deviation at the zero-crossing moment collected between the HPLC communication modules from different manufacturers that have passed the test is small. Therefore, when these HPLC communication modules from different manufacturers that have passed the test are mixedly installed (that is, the master node and the slave node are installed with HPLC communication modules from different manufacturers that have passed the test), the problem of large deviation in the network reference time at the zero-crossing moment collected due to differences in the main chip performance, component performance, circuit design and software algorithm designed by different HPLC communication module manufacturers is avoided, the accuracy of station area identification is improved, and the HPLC station area identification function is made more universal, saving a huge amount of manpower and material resources.

[0094] Based on the above Figure 4 The method shown in FIG. 1 is a method for performing the above-mentioned operations. Accordingly, this embodiment further provides a storage medium, which may be volatile or non-volatile, and stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the above-mentioned operations are performed. Figure 4 The area identification performance detection method shown.

[0095] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of the present application.

[0096] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for improving the accuracy of station area identification, characterized in that: HPLC communication modules of multiple different manufacturers are respectively used as communication modules to be tested, and the area identification performance detection device is used to perform area identification performance detection on the communication modules to be tested, and the HPLC communication modules of different manufacturers that pass the test are screened out, and the master node and the slave node are installed with the HPLC communication modules of different manufacturers that pass the test for area identification; The method of using the station area identification performance detection device to perform station area identification performance detection of the communication module under test includes: The station area identification performance detection device includes: a control module, a standard communication module, and a communication module to be tested; The control module is used to control the standard communication module and the communication module under test to intercept multiple groups of standard sine waves in the same period, wherein each group of standard sine waves in the same period includes the ones intercepted by the standard communication module and the ones intercepted by the communication module under test; The standard communication module is used to collect the standard network reference time at the zero-crossing moment of the standard sine wave and send the standard network reference time to the control module; the tested communication module is used to collect the tested network reference time at the zero-crossing moment of the standard sine wave and send the tested network reference time to the control module; The control module is used to calculate an absolute deviation index and an acquisition accuracy index based on the standard network reference time and the tested network reference time. When both the absolute deviation index and the acquisition accuracy index are qualified, the station area identification performance of the tested communication module passes the test.

2. The method according to claim 1, characterized in that The control module includes: a difference sequence calculation unit, an absolute deviation index calculation unit, and an acquisition accuracy index calculation unit; The difference sequence calculation unit is used to calculate the difference between the standard network reference time and the measured network reference time in multiple groups of the same time period, obtain a difference sequence, and send it to the absolute deviation index calculation unit and the acquisition accuracy index calculation unit; The absolute deviation index calculation unit is used to obtain the maximum value and the minimum value of the difference sequence, and calculate the difference between the maximum value and the minimum value to obtain the absolute deviation index; The acquisition accuracy index calculation unit is used to calculate the standard deviation of the difference sequence to obtain the acquisition accuracy index.

3. The method according to claim 2, characterized in that The control module further includes: a judgment unit; The judgment unit is used to receive the absolute deviation index and judge that the absolute deviation index is qualified when the absolute deviation index is less than a first preset threshold, and to receive the acquisition accuracy index and judge that the acquisition accuracy index is qualified when the acquisition accuracy index is less than a second preset threshold.

4. The method according to claim 1, wherein The detection device further includes: a transmitter; The transmitter is configured to receive a start instruction sent by the control module, and in response to the start instruction, send the standard sine wave to the standard communication module and the communication module under test simultaneously; The transmitter is further configured to receive a stop instruction sent by the control module, and stop sending the standard sine wave in response to the stop instruction.

5. The method according to claim 1, wherein The detection device further comprises: a shielding box; The shielding box is used to group the standard communication module and the communication module under test into the same local area network, and isolate the local area network from the outside world.

Images