CN212083646U - Online checking system for electric energy meter checking assembly line - Google Patents

Abstract

The utility model belongs to the technical field of on-line verification systems, and in particular relates to an on-line verification system for an electric energy meter calibration pipeline, comprising an electric energy meter simulator, an electric energy meter automatic verification device, and an online verification instrument. The on-line verification instrument is wirelessly connected with the electric energy meter simulator, the electric energy meter simulator is connected with the electric energy meter automatic verification device, and the electric energy meter automatic verification device is connected with the online verification instrument. The utility model cooperates with the electric energy meter simulator and the online checking instrument, and can quickly and accurately determine whether the indicators, functions and performance states of the electric energy meter automatic verification device during long-term operation of the assembly line after being loaded are normal. The new test steps are simplified, the verification results are highly reliable, labor costs are reduced, and work efficiency is improved. The utility model is used for the on-line inspection of an automatic verification device of an electric energy meter.

Description

An on-line verification system for electric energy meter verification pipeline

technical field

The utility model belongs to the technical field of on-line verification systems, in particular to an on-line verification system for a verification line of an electric energy meter.

Background technique

Due to the comprehensive replacement of smart energy meters in the construction of a smart grid, the automatic calibration line of electric energy meters with a daily inspection capacity of tens of thousands of meters came into being. Due to the huge amount of daily inspection of the assembly line and the extremely fast inspection process, according to the original verification method no-load sampling, the inspection department spends a lot of manpower and material resources each time, using common standard meters such as RD33 to stop the no-load and inspect the epitops one by one. method, it is impossible to accurately detect the real status of these epitopes after loading, and it is impossible to accurately judge whether the working status of each epitope is normal after the pipeline is filled with the table. When the automatic verification of the electric energy meter is carried out, it is affected by factors such as the load capacity of the isolation transformers at different positions in the pipeline, the state of the short-circuit relay, the contact resistance of the pressing mechanism, and the pipeline environment does not fully meet the reference conditions. The pipeline is affected by various factors such as accuracy and reliability, and it is impossible to ensure whether the indicators, functions and performance status of the automatic verification pipeline of the electric energy meter are normal when running for a long time.

Utility model content

Aiming at the question of whether the indicators, functions and performance states of the pipeline during long-term operation of the electric energy meter automatic verification device are normal after being loaded, the utility model provides an electric energy meter verification pipeline online verification system with high work efficiency and stable performance. .

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

An on-line verification system for an electric energy meter calibration pipeline, comprising an electric energy meter simulator, an electric energy meter automatic verification device, and an online verification instrument, wherein the electric energy meter simulator has at least one, and the online verification instrument communicates with the electric energy meter simulator wirelessly. The connection is used to wirelessly set the electric energy error, functional failure and performance failure of the electric energy meter simulator, and at the same time configure the electric energy meter automatic verification device and read the detection results of the electric energy meter automatic verification device. The electric energy meter automatic verification device is connected to simulate the electric energy error, functional failure and performance failure of the electric energy meter simulator. , functional failure and performance failure, through the comparison between the preset value and the actual detection value, it is determined whether the indicators, functions and performance status of the automatic verification device of the electric energy meter when the pipeline is running for a long time after being loaded is normal.

The electric energy meter simulator includes a main control module, an A/D conversion module, a first wireless module, a voltage wiring hole and a current wiring hole, and the main control module is respectively connected with the A/D conversion module and the first wireless module through wires. , the A/D conversion module is respectively connected with the voltage wiring hole and the current wiring hole through wires.

The online verification instrument includes a host computer, a USB communication module, and a second wireless module. The host computer is connected to the USB communication module. The USB communication module is connected to the communication module of the electric energy meter automatic verification device through a wire. The host computer is connected to the second wireless communication module. The wireless module is connected, the second wireless module is wirelessly connected to the first wireless module of the electric energy meter simulator, and the host is respectively connected to the power supply, the hard disk and the display screen through wires.

The electric energy meter automatic verification device supports electric energy meter simulators with 6 epitopes, 12 epitopes or 24 epitopes.

The electric energy meter automatic verification device includes a high-precision voltage source, a high-precision current source, a main control computer and a communication module. The electric energy meter simulator is respectively connected with a high-precision voltage source and a high-precision current source. The high-precision voltage source Both the high-precision current source and the main control computer are connected to the main control computer, and the main control computer is connected to the communication module, and the communication module is connected to the online verification instrument.

The voltage wiring hole and the current wiring hole of the electric energy meter simulator are respectively connected with the high-precision voltage source and the high-precision current source.

The multiple electric energy meter simulators are connected in a current series and a voltage parallel connection.

Compared with the prior art, the utility model has the following beneficial effects:

The online verification system of the electric energy meter verification line works together with the electric energy meter simulator and the online verification instrument. The online verification instrument wirelessly sets the electric energy error, functional failure and performance failure of the electric energy meter simulator, and the electric energy meter automatic verification device detects the simulated electric energy. The actual electric energy error, functional failure and performance failure of the meter are compared with the preset value and the actual detection value to determine whether the indicators, functions and performance status of the automatic verification device of the electric energy meter when the pipeline runs for a long time after being loaded is normal. The system test indicators are complete, the test steps are simplified, and the verification results are highly credible, while reducing labor costs and improving work efficiency.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the structural representation of the utility model electric energy meter simulator;

Fig. 3 is the structural representation of the utility model online verification instrument;

Fig. 4 is the working flow chart of the utility model.

Among them: 1 is the electric energy meter simulator, 2 is the electric energy meter automatic verification device, 3 is the online verification instrument, 101 is the main control module, 102 is the A/D conversion module, 103 is the first wireless module, 104 is the voltage wiring hole, 105 is the current wiring hole, 201 is the high-precision voltage source, 202 is the high-precision current source, 203 is the main control computer, 204 is the communication module, 301 is the host, 302 is the USB communication module, 303 is the second wireless module, 304 is the The power supply, 305 is the hard disk, and 306 is the display screen.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

An electric energy meter calibration pipeline online verification system, as shown in Figure 1, includes an electric energy meter simulator 1, an electric energy meter automatic verification device 2, an online verification instrument 3, at least one electric energy meter simulator 1, and an electric energy meter simulator 1. It is connected with the electric energy meter automatic verification device 2, the electric energy meter automatic verification device 2 is connected with the online verification instrument 3, and the electric energy meter simulator 1 is connected with the online verification instrument 3 by wireless means. Insert the electric energy meter simulator 1 corresponding to the pin position of the meter socket of the electric energy meter automatic verification device, and the electric energy meter automatic verification device 2 inputs the voltage and current signals into the electric energy meter simulator 1, and at the same time, the electric energy meter simulator 1 is subjected to pressure value, Contact temperature detection. The measured pressure and temperature analog signals are converted into electrical signals through the electric energy meter simulator 1 and transmitted to the online verification instrument 3 by wireless means.

Further, the electric energy meter automatic verification device supports electric energy meter simulators with 6 epitopes, 12 epitopes or 24 epitopes.

Further, as shown in FIG. 2, the electric energy meter simulator 1 includes a main control module 101, an A/D conversion module 102, a first wireless module 103, a voltage wiring hole 104 and a current wiring hole 105. The main control module 101 is connected to the The A/D conversion module 102 and the first wireless module 103 are connected, and the A/D conversion module 102 is respectively connected to the voltage wiring hole 104 and the current wiring hole 105 through wires. Corresponding the voltage wiring hole 104 and the current wiring hole 105 with the position of the meter socket pin of the electric energy meter automatic verification device assembly line one-to-one to detect the pressure value and contact temperature, and pass the measured pressure and temperature analog signals through the internal A/D conversion module 102 is converted, and the obtained pressure value and contact temperature value are sent to the main control module 101 inside the electric energy meter simulator 1 , and the main control module 101 controls the first wireless module 103 to transmit to the online verification instrument 3 .

Further, the online verification instrument 3 includes a host 301, a USB communication module 302, and a second wireless module 303. The host 301 is connected to the USB communication module 302, and the USB communication module 302 is connected to the communication module 204 of the electric energy meter automatic verification device 2 through a wire. It is used to configure the automatic verification device of the electric energy meter and read the detection results of the automatic verification device of the electric energy meter. The host 301 is connected to the second wireless module 303, the second wireless module 303 is connected to the first wireless module 103 of the electric energy meter simulator 1 wirelessly, and the electric energy error, functional failure, pressure and temperature threshold. The host 301 is connected to the power supply 304 , the hard disk 305 and the display screen 306 respectively through wires.

Further, the electric energy meter automatic verification device 2 includes a high-precision voltage source 201, a high-precision current source 202, a main control computer 203 and a communication module 204, and the electric energy meter simulator 1 is respectively connected to the high-precision voltage source 201 and the high-precision current source 202. Both the high-precision voltage source 201 and the high-precision current source 202 are connected to the main control computer 203 , the main control computer 203 is connected to the communication module 204 , and the communication module 204 is connected to the online checker 3 .

Further, the voltage connection hole 104 and the current connection hole 105 of the electric energy meter simulator 1 are respectively connected to the high-precision voltage source 201 and the high-precision current source 202 .

Further, preferably, a plurality of electric energy meter simulators 1 are connected in series in current and in parallel in voltage.

The work flow of the utility model is as follows: as shown in Figure 4, it includes the following steps: S1, hanging the meter, hooking the electric energy meter simulator to the measured electric energy meter table position of the electric energy meter automatic verification device; S2, formulating a verification scheme, According to the testing requirements, the full-position on-load online checker of the electric energy meter verification line formulates the index detection scheme, function detection scheme, and performance detection scheme, and presets the accuracy level of the electric energy meter to be inspected; S3, set the electric energy meter simulator, according to the The developed testing plan, the full meter position on-load online checker of the electric energy meter verification line, and the electric energy meter simulator wirelessly set the electric energy error, functional failure, pressure value and temperature value threshold of the electric energy meter simulator through the matching communication protocol. ;S4. The electric energy meter simulator is powered on, and the electric energy meter verification line full-position on-line verifier sends the verification plan to the electric energy meter automatic verification device through the communication module, so that the electric energy meter automatic verification device outputs the matching data to the electric energy meter simulator. Voltage source and current source; S5, data acquisition, electric energy meter verification line full-scale on-line checker with load to read the voltage, current, power, phase, voltage, current, power, phase, Electrical parameters and performance index parameters such as power pulse signal and power error; S6, fault check, calculate the error of the power meter simulator according to the collected data, and compare the collected data with the internal expert knowledge base to find the corresponding fault attributes and performance Attribute, the comparison result is compared with the preset value. If the comparison result is consistent with the preset value, the electric energy meter automatic verification device is qualified; if the comparison result is inconsistent with the preset value, the electric energy meter automatic verification device is unqualified and Compare the comparison result with the previous test results in the expert knowledge base, predict the time of failure, and recommend the next time to test the automatic verification device of the electric energy meter; S7, complete the test of the automatic verification device of the electric energy meter. Among them, S6, fault verification, is further divided into an index verification module, a functional fault verification module and a performance verification module. The index verification module calculates the error of the electric energy meter simulator with the received data, compares it with the error of the electric energy meter simulator set before the test, and issues a data alarm to the table position with out-of-tolerance error, and then according to common problems or individual characteristics If there is a problem, carry out fault location analysis; the function fault verification module compares the received collected data with the fault phenomenon set before the detection, and judges whether it is consistent. The performance fault checking module compares the received temperature value and pressure value data with the set threshold value. If the threshold value is within the normal range, it will alarm when the threshold value is exceeded, and conduct fault location analysis.

The online verification system of the electric energy meter verification line works together with the electric energy meter simulator and the online verification instrument. The online verification instrument wirelessly sets the electric energy error, functional failure and performance failure of the electric energy meter simulator, and the electric energy meter automatic verification device detects the simulated electric energy. The actual electric energy error, functional failure and performance failure of the meter are compared with the preset value and the actual detection value to determine whether the indicators, functions and performance status of the automatic verification device of the electric energy meter when the pipeline runs for a long time after being loaded is normal. The system test indicators are complete, the test steps are simplified, and the verification results are highly credible, while reducing labor costs and improving work efficiency.

Only the preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by those of ordinary skill in the art, it is also possible to do so without departing from the purpose of the present utility model. Various changes are made below, and all changes should be included within the protection scope of the present invention.

Claims (7)

1. An electric energy meter calibration pipeline online verification system, characterized in that: comprising an electric energy meter simulator (1), an electric energy meter automatic verification device (2), an online verification instrument (3), the electric energy meter simulator (1) ) at least one, the online verification instrument (3) is wirelessly connected to the electric energy meter simulator (1), the electric energy meter simulator (1) is connected to the electric energy meter automatic verification device (2), the electric energy meter The automatic verification device (2) is connected with the online verification instrument (3). 2. An on-line verification system for an electric energy meter verification line according to claim 1, characterized in that: the electric energy meter simulator (1) comprises a main control module (101), an A/D conversion module (102), A first wireless module (103), a voltage wiring hole (104) and a current wiring hole (105), the main control module (101) is connected to the A/D conversion module (102) and the first wireless module (103) through wires respectively connection, the A/D conversion module (102) is respectively connected to the voltage wiring hole (104) and the current wiring hole (105) through wires. 3. An on-line verification system for an electric energy meter verification pipeline according to claim 2, characterized in that: the on-line verification instrument (3) comprises a host (301), a USB communication module (302), a second wireless module ( 303), the host (301) is connected to a USB communication module (302), and the USB communication module (302) is connected to the communication module (204) of the electric energy meter automatic verification device (2) through a wire, and the host (301) ) is connected to the second wireless module (303), the second wireless module (303) is wirelessly connected to the first wireless module (103) of the electric energy meter simulator (1), and the host (301) is respectively connected by wires Connect to the power supply (304), hard disk (305), and display screen (306). 4. An on-line verification system for an electric energy meter verification line according to claim 2, characterized in that: the electric energy meter automatic verification device (2) supports the simulation of electric energy meters with 6 epitopes, 12 epitopes or 24 epitopes device (1). 5. An on-line verification system for an electric energy meter calibration pipeline according to claim 1, characterized in that: the electric energy meter automatic calibration device (2) comprises a high-precision voltage source (201) and a high-precision current source (202) , a main control computer (203) and a communication module (204), the electric energy meter simulator (1) is respectively connected with a high-precision voltage source (201) and a high-precision current source (202), the high-precision voltage source (201) ) and the high-precision current source (202) are connected to the main control computer (203), the main control computer (203) is connected to the communication module (204), and the communication module (204) is connected to the online checker (3) connect. 6. An on-line verification system for an electric energy meter calibration pipeline according to claim 1 or 2, characterized in that: the voltage wiring hole (104) and the current wiring hole (105) of the electric energy meter simulator (1) are respectively It is connected with a high-precision voltage source (201) and a high-precision current source (202). 7 . The on-line verification system for an electric energy meter verification line according to claim 1 , wherein a plurality of electric energy meter simulators ( 1 ) are connected in current series and voltage parallel connection. 8 .

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