Device and method for checking wiring of secondary circuit of metering device

Abstract

The invention discloses a metering device secondary circuit wiring checking device and method, and relates to the technical field of electric power auxiliary tools, and the device comprises a test host which is used for generating a carrier wave test signal and transmitting the carrier wave test signal to a metering device secondary circuit; the test slave is used for acquiring a carrier monitoring signal of a secondary circuit of the metering device and performing wiring check; the first connecting line is used for connecting the test host and the first end of the secondary circuit; and the second connecting line is used for connecting the test slave and the second end of the secondary circuit. According to the invention, the test host generates the carrier test signal and provides the test signal for the secondary circuit of the metering device, the test slave monitors the secondary circuit of the metering device to obtain the carrier monitoring signal, and then compares the carrier monitoring signal with the carrier test signal to judge whether the wiring is correct, so that the operation is convenient, and the test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power auxiliary tools, and in particular to a secondary circuit wiring verification device and a method for a metering device. Background Art

[0002] High-voltage electric energy metering devices are indispensable measuring instruments used in the process of supply, use and power generation, involving the economic interests of both the supply and the user, so its fairness and justice are very important. In order to improve the accuracy of electric energy metering, wiring inspection is usually carried out before the electric energy metering device is put into operation.

[0003] After the installation and wiring of the newly installed energy metering device is completed, the power supply grid generally needs to go through certain procedures before it can supply power, which takes a certain amount of time, resulting in no power supply on site; even if the power supply grid is connected, in line with the principle of fair measurement, the power supply grid's electricity is generally not used for testing to avoid adding the electricity consumed in the test to the user. Therefore, the wiring correctness of the newly installed energy metering device is usually checked manually using a multimeter.

[0004] The above manual detection method is not only inefficient, but also when the connection position of the wire needs to be changed due to wiring errors, due to the large number of wires, it is easy for the wires to be poorly connected, missed, or touch adjacent conductor parts, causing short circuits, open circuits, and even easy to connect the wrong position again.

[0005] Therefore, it is necessary to design a secondary circuit wiring verification device for a metering device to solve the problems raised in the above background technology. Summary of the invention

[0006] The technical problem to be solved by the present invention is to solve the deficiencies in the prior art and to design a new secondary circuit wiring verification device and method for a metering device, which can automatically detect the accuracy of the wiring.

[0007] The solution adopted by the present invention to solve the technical problem is:

[0008] In a first aspect, the present invention provides a secondary circuit wiring verification device for a metering device, comprising:

[0009] A test host, used for generating a carrier test signal and sending the carrier test signal to a secondary circuit of a metering device;

[0010] Test slave, used to obtain the carrier monitoring signal of the secondary circuit of the metering device and perform wiring verification;

[0011] A first connecting line, used to connect the test host and the first end of the secondary circuit;

[0012] The second connecting line is used to connect the test slave and the second end of the secondary circuit.

[0013] As a further technical solution of the present invention, the test host comprises:

[0014] Host shell,

[0015] The carrier generation module is arranged inside the housing of the host and is used to provide a carrier test signal;

[0016] A host control module controls the output signal of the carrier generator according to the test circuit;

[0017] The host power supply module is arranged inside the host housing to provide working power;

[0018] A host wiring module, used for providing a carrier output port;

[0019] A host display module is used to display host status information;

[0020] The output end of the host power supply module is connected to the carrier generation module, the host control module and the host display module, the output end of the host control module is connected to the carrier generation module and the host display module, the output end of the carrier generation module is connected to the host wiring module, and the output end of the host wiring module is connected to the first connecting line.

[0021] As a further technical solution of the present invention, the carrier generation module includes:

[0022] A first carrier mode, wherein the first carrier mode is a 7-channel carrier generation signal for a three-phase three-wire line;

[0023] A second carrier mode, wherein the second carrier mode is a 10-channel carrier generation signal for a three-phase four-wire line;

[0024] A mode selection button is arranged on the housing of the host.

[0025] As a further technical solution of the present invention, the first connecting wires and the second connecting wires respectively include two groups of connecting wires, namely a three-phase three-wire connecting wire and a three-phase four-wire connecting wire.

[0026] Furthermore, both ends of the first connecting wire and the second connecting wire are alligator clips.

[0027] As a further technical solution of the present invention, the test slave includes:

[0028] From the machine housing,

[0029] A slave connection module, disposed on the slave housing, for providing a connection port for a second connection line;

[0030] A wiring detection module, disposed inside the housing of the slave device, for acquiring a carrier monitoring signal transmitted by the second connection line;

[0031] The slave control module is arranged inside the slave housing and is used to compare the acquired carrier monitoring signal to determine whether the wiring is correct;

[0032] A slave power supply module, used to provide working power to the test slave;

[0033] A slave display module is used to display the judgment result of the slave control module;

[0034] The output end of the slave power supply module is connected to the wiring detection module, the output end of the second connecting line is connected to the slave wiring module, the output end of the slave wiring module is connected to the wiring detection module, the output end of the wiring detection module is connected to the slave control module, and the output end of the slave control module is connected to the slave display module.

[0035] As a further technical solution of the present invention, the slave control module includes:

[0036] A parameter setting module, used to set the carrier signal emitted by the carrier generation module of the test host;

[0037] The comparison and judgment module compares the received carrier monitoring signal with the set carrier signal. If the comparison is consistent, the wiring is correct, otherwise it is wrong.

[0038] The alarm output module issues an alarm prompt for the comparison result of the comparison and judgment module.

[0039] As a further technical solution of the present invention, the host display module and the slave display module adopt OLED liquid crystal display screens.

[0040] As a further technical solution of the present invention, the host power supply module and the slave power supply module use rechargeable lithium batteries.

[0041] In a second aspect, the present invention also provides a method for checking the wiring of a secondary circuit of a metering device, comprising:

[0042] Connecting the test host to the first side of the secondary circuit of the metering device through a first connecting line, and connecting the test slave to the second side of the secondary circuit of the metering device through a second connecting line;

[0043] The test host selects the test mode according to the secondary circuit to be tested and outputs the carrier test signal;

[0044] The test slave obtains the carrier monitoring signal on the secondary circuit;

[0045] Compare the carrier monitoring signal with the carrier test signal, judge the secondary circuit wiring and obtain the wiring result;

[0046] The wiring results are displayed.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. The present invention provides a test signal for the secondary circuit of the metering device by setting a test host to generate a carrier test signal. The test host is connected to one end of the secondary circuit of the metering device through a first connecting line, and the second end of the secondary circuit of the metering device is connected to a test slave through a second connecting line. The test slave monitors the secondary circuit of the metering device to obtain a carrier monitoring signal, and then compares the carrier monitoring signal with the carrier test signal to determine whether the wiring is correct. The test slave pre-stores the carrier test signal of the test host. The test slave compares the monitored carrier monitoring signal with the stored carrier test signal. If all lines are consistent, it is determined that the wiring is correct; otherwise, the wiring is wrong. The test is convenient and the test efficiency is improved.

[0049] 2. The present invention adopts a lithium battery, and a charging interface is set on the host casing to facilitate connection with an external power supply. The carrier generating module is a preset carrier signal, and the host control module controls the drive circuit to output multiple carrier signals. A power on / off button and a start detection button are also set on the host casing for easy operation.

[0050] 3. In order to be applicable to the testing of three-phase three-wire circuits and three-phase four-wire circuits, the carrier generation module of the present invention includes two modes, and different wiring circuits can be switched through a mode selection button, which has a wide range of applications.

[0051] 4. Both ends of the first connecting wire and the second connecting wire are equipped with alligator clips to facilitate wiring operations.

[0052] 5. The slave housing can adopt a handheld structure, which is convenient for carrying and testing. The slave wiring module can adopt an integrated wiring port. One end of the second connecting line is set in a plug that matches the integrated wiring port. The slave wiring module can be set with a 7-way port and a 10-way port, which can be connected to different connecting lines respectively for easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a structural diagram of the secondary circuit wiring verification device of the metering device proposed by the present invention;

[0054] Figure 2 This is a flow chart of the secondary circuit wiring verification method of the metering device proposed by the present invention;

[0055] Figure 3 This is a physical diagram of the secondary circuit wiring verification device of the metering device proposed in the present invention. DETAILED DESCRIPTION

[0056] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0057] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0058] At the same time, in the description of the present invention, it should be understood that the terms "one end", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like 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 cannot be understood as a limitation on the present invention.

[0059] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0060] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0061] like Figure 1 As shown, the secondary circuit wiring verification device of the metering device proposed by the present invention comprises:

[0062] The test host 10 is used to generate a carrier test signal and send the carrier test signal to the secondary circuit of the metering device;

[0063] The test slave 20 is used to obtain the carrier monitoring signal of the secondary circuit of the metering device and to perform wiring verification;

[0064] A first connecting line 30, used to connect the test host and the first end of the secondary circuit;

[0065] The second connecting line 40 is used to connect the test slave and the second end of the secondary circuit.

[0066] In an embodiment of the present invention, a test host is set to generate a carrier test signal to provide a test signal for the secondary circuit of the metering device. The test host is connected to one end of the secondary circuit of the metering device through a first connecting line, and the second end of the secondary circuit of the metering device is connected to the test slave through a second connecting line. The test slave monitors the secondary circuit of the metering device to obtain a carrier monitoring signal, and then compares the carrier monitoring signal with the carrier test signal to determine whether the wiring is correct. The test slave pre-stores the carrier test signal of the test host, and the test slave compares the monitored carrier monitoring signal with the stored carrier test signal. If all lines are consistent, it is determined that the wiring is correct; otherwise, the wiring is incorrect.

[0067] In the embodiment of the present invention, a spare test slave can be set as needed, and the wiring test result can be displayed on the display screen of the test slave, and the wrongly wired lines can be indicated to remind the tester to adjust the wiring.

[0068] In an embodiment of the present invention, the test host includes:

[0069] The host shell supports and protects the test host;

[0070] The carrier generation module is arranged inside the main body shell and is used to provide a carrier test signal; the carrier test signal is divided into 7-channel and 10-channel test signals. The test signal is a carrier test signal for power. The frequency of each test signal is different, which is convenient for the comparison of each test signal in the later stage; the 7-channel test signal is suitable for a three-phase three-wire wiring loop, and the 10-channel test signal is suitable for a three-phase four-wire wiring loop.

[0071] The host control module controls the output signal of the carrier generator according to the test circuit; the test circuit is a three-phase three-wire circuit or a three-phase four-wire circuit;

[0072] The host power supply module is arranged inside the host housing to provide working power;

[0073] A host wiring module, used for providing a carrier output port;

[0074] A host display module is used to display host status information;

[0075] The output end of the host power supply module is connected to the carrier generation module, the host control module and the host display module, the output end of the host control module is connected to the carrier generation module and the host display module, the output end of the carrier generation module is connected to the host wiring module, and the output end of the host wiring module is connected to the first connecting line.

[0076] In an embodiment of the present invention, the host status information includes information such as test status, test time, power-on status, whether the test signal is normal, etc., which is used to display the test status of the test host. The host power supply module adopts a lithium battery, and a charging interface is provided on the host casing to facilitate connection with an external power supply. The carrier generation module is a preset carrier signal, and the host control module controls the drive circuit to output multiple carrier signals. A power on / off button and a start detection button are also provided on the host casing for easy operation.

[0077] In the embodiment of the present invention, in order to be applicable to the test of three-phase three-wire loop and three-phase four-wire loop, the carrier generation module includes two modes:

[0078] A first carrier mode, the first carrier mode is a 7-channel carrier generation signal for a three-phase three-wire line;

[0079] The second carrier mode is a 10-channel carrier generation signal for a three-phase four-wire line;

[0080] A mode selection button is arranged on the housing of the host.

[0081] Different wiring circuits can be switched through the mode selection button. When the secondary circuit of the metering device is a three-phase three-wire wiring method, the first carrier mode is selected for testing. When the secondary circuit of the metering device is a three-phase four-wire wiring method, the second carrier mode is selected for testing.

[0082] Among them, the first connecting wire and the second connecting wire respectively include two groups of connecting wires, a three-phase three-wire connecting wire and a three-phase four-wire connecting wire. Different connecting wires can be selected according to the test object. Both ends of the first connecting wire and the second connecting wire are crocodile wire clips to facilitate wiring operations.

[0083] In an embodiment of the present invention, the test slave includes:

[0084] From the machine housing,

[0085] A slave connection module, disposed on the slave housing, for providing a connection port for a second connection line;

[0086] A wiring detection module, disposed inside the housing of the slave device, for acquiring a carrier monitoring signal transmitted by the second connection line;

[0087] The slave control module is arranged inside the slave housing and is used to compare the acquired carrier monitoring signal to determine whether the wiring is correct;

[0088] A slave power supply module, used to provide working power to the test slave;

[0089] The slave display module is used to display the judgment results of the slave control module; it can also display wrong wiring to facilitate operators to correct;

[0090] The output end of the slave power supply module is connected to the wiring detection module, the output end of the second connecting line is connected to the slave wiring module, the output end of the slave wiring module is connected to the wiring detection module, the output end of the wiring detection module is connected to the slave control module, and the output end of the slave control module is connected to the slave display module.

[0091] Among them, the slave control module includes:

[0092] A parameter setting module, used to set the carrier signal emitted by the carrier generation module of the test host;

[0093] The comparison and judgment module compares the received carrier monitoring signal with the set carrier signal. If the comparison is consistent, the wiring is correct, otherwise it is wrong.

[0094] The alarm output module issues an alarm prompt for the comparison result of the comparison and judgment module.

[0095] The slave housing can adopt a handheld structure, which is convenient for carrying and testing. The slave wiring module can adopt an integrated wiring port. One end of the second connecting line is set in a plug that matches the integrated wiring port. The slave wiring module can be provided with a 7-way port and a 10-way port, which are respectively connected to different connecting lines for easy operation; the wiring detection module monitors the carrier signal of the slave wiring module to obtain a carrier monitoring signal, the slave control module compares the carrier monitoring signal and the stored carrier test signal to obtain a wiring result, and displays the wiring result through the slave display module.

[0096] In the embodiment of the present invention, the host display module and the slave display module adopt OLED liquid crystal display screens, and the host power supply module and the slave power supply module adopt rechargeable lithium batteries. The present invention facilitates wiring operation by setting a test host and a test slave, and the test is accurate, thereby improving the test efficiency.

[0097] See also Figure 2 The present invention also provides a method for checking the wiring of a secondary circuit of a metering device, comprising:

[0098] Step 201, connecting the test host to the first side of the secondary circuit of the metering device through a first connecting line, and connecting the test slave to the second side of the secondary circuit of the metering device through a second connecting line;

[0099] Step 202, the test host selects a test mode according to the secondary circuit to be tested and outputs a carrier test signal;

[0100] Step 203, the test slave obtains a carrier monitoring signal on the secondary loop;

[0101] Step 204, compare the carrier monitoring signal with the carrier test signal, determine the secondary circuit wiring and obtain the wiring result;

[0102] Step 205: Display the wiring result.

[0103] In the above-mentioned device embodiment, the method is described in detail in the form of a specific device structure. Therefore, the above-mentioned device embodiment has described the method in detail, and this embodiment will not be described in detail.

[0104] See also Figure 3 , which is a physical picture of the secondary circuit wiring verification device of the metering device proposed in the present invention, uses a test host and a test slave to verify the wiring of the secondary circuit to be measured through a terminal block.

[0105] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. Many other changes and modifications can be made without departing from the concept and scope of the present invention. It should be understood that the present invention is not limited to specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A secondary circuit wiring verification device for a metering device, characterized in that: include: A test host, used for generating a carrier test signal and sending the carrier test signal to a secondary circuit of a metering device; Test slave, used to obtain the carrier monitoring signal of the secondary circuit of the metering device and perform wiring verification; A first connecting line, used to connect the test host and the first end of the secondary circuit; The second connecting line is used to connect the test slave and the second end of the secondary circuit.

2. A secondary circuit wiring verification device for a metering device according to claim 1, characterized in that: The test host comprises: Host shell, The carrier generation module is arranged inside the housing of the host and is used to provide a carrier test signal; A host control module controls the output signal of the carrier generator according to the test circuit; A host power supply module is arranged inside the host housing to provide working power; A host wiring module, used for providing a carrier output port; A host display module is used to display host status information; The output end of the host power supply module is connected to the carrier generation module, the host control module and the host display module, the output end of the host control module is connected to the carrier generation module and the host display module, the output end of the carrier generation module is connected to the host wiring module, and the output end of the host wiring module is connected to the first connecting line.

3. A secondary circuit wiring verification device for a metering device according to claim 2, characterized in that: The carrier generation module comprises: A first carrier mode, wherein the first carrier mode is a 7-channel carrier generation signal for a three-phase three-wire line; A second carrier mode, wherein the second carrier mode is a 10-channel carrier generation signal for a three-phase four-wire line; A mode selection button is arranged on the housing of the host.

4. A secondary circuit wiring verification device for a metering device according to claim 1, characterized in that: The first connection wires and the second connection wires include two groups of connection wires, namely, three-phase three-wire connection wires and three-phase four-wire connection wires.

5. A secondary circuit wiring verification device for a metering device according to claim 4, characterized in that: Both ends of the first connecting wire and the second connecting wire are alligator clips.

6. A secondary circuit wiring verification device for a metering device according to claim 1, characterized in that: The test slave comprises: From the machine housing, A slave connection module, disposed on the slave housing, for providing a connection port for a second connection line; A wiring detection module, disposed inside the housing of the slave device, for acquiring a carrier monitoring signal transmitted by the second connection line; The slave control module is arranged inside the slave housing and is used to compare the acquired carrier monitoring signal to determine whether the wiring is correct; A slave power supply module, used to provide working power to the test slave; A slave display module is used to display the judgment result of the slave control module; The output end of the slave power supply module is connected to the wiring detection module, the output end of the second connecting line is connected to the slave wiring module, the output end of the slave wiring module is connected to the wiring detection module, the output end of the wiring detection module is connected to the slave control module, and the output end of the slave control module is connected to the slave display module.

7. A secondary circuit wiring verification device for a metering device according to claim 6, characterized in that: The slave control module comprises: A parameter setting module, used to set the carrier signal emitted by the carrier generation module of the test host; The comparison and judgment module compares the received carrier monitoring signal with the set carrier signal. If the comparison is consistent, the wiring is correct, otherwise it is wrong. The alarm output module issues an alarm prompt for the comparison result of the comparison and judgment module.

8. A secondary circuit wiring verification device for a metering device according to claim 2, characterized in that: The host display module and the slave display module adopt OLED liquid crystal display screens.

9. A secondary circuit wiring verification device for a metering device according to claim 2, characterized in that: The host power supply module and the slave power supply module use rechargeable lithium batteries.

10. A method for checking the wiring of a secondary circuit of a metering device, using a device for checking the wiring of a secondary circuit of a metering device as claimed in any one of claims 1 to 9, characterized in that: include: Connecting the test host to the first side of the secondary circuit of the metering device through a first connecting line, and connecting the test slave to the second side of the secondary circuit of the metering device through a second connecting line; The test host selects the test mode according to the secondary circuit to be tested and outputs the carrier test signal; The test slave obtains the carrier monitoring signal on the secondary circuit; Compare the carrier monitoring signal with the carrier test signal, judge the secondary circuit wiring and obtain the wiring result; The wiring results are displayed.

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