A kind of electromagnetic compatibility anti-interference test electric energy meter photoelectric acquisition device and method

Abstract

The application belongs to the technical field of electric energy meter detection, and discloses an electric energy meter photoelectric collection device and method for electromagnetic compatibility interference test, which comprises a first load battery, a first load battery switch, a pulse counter, a pulse counter switch, a light pulse collector, a light guide optical fiber, a program-controlled displacement clamp and a second load battery. The light pulse collector is connected with the pulse counter switch, the pulse counter switch is connected with the pulse counter, the first load battery is connected with the first load battery switch, the first load battery switch is connected with the power input end of the light pulse collector, the light signal input end of the light pulse collector is connected with the light guide optical fiber, the light guide optical fiber is fixed on the program-controlled displacement clamp, and the second load battery is connected with the program-controlled displacement clamp. The application only needs one collection device, and can realize automatic switching sampling of active and reactive light pulses of the electric energy meter, reduce the calibration time, improve the automatic detection level, and reduce the safety risk existing when the staff manually moves the photoelectric sampler.

Description

Technical Field

[0001] This invention belongs to the field of electricity meter testing technology, and particularly relates to an electricity meter photoelectric acquisition device and method for electromagnetic compatibility immunity testing. Background Technology

[0002] Electromagnetic compatibility (EMC) immunity testing of electricity meters is conducted according to the requirements of standard GB / T 17215.211-2021. Particularly during the power frequency magnetic field and radio frequency radiated electromagnetic field tests, testing is required under both loaded and unloaded conditions. The pass / fail criterion is that under loaded conditions, the change in the meter's error should not exceed the maximum limit required by the standard; under unloaded conditions, the change in the meter's energy consumption should not exceed the critical value required by the standard. Therefore, it is necessary to collect the output pulse signal of the electricity meter during the testing process to calculate the change in error and the change in energy consumption. One existing testing method involves directly connecting a two-core sampling line to the electricity meter's electrical pulse signal output terminal and collecting the output electrical pulse signal for testing. However, spatial electromagnetic field interference such as power frequency magnetic fields and radio frequency radiated electromagnetic fields is particularly strong. Due to the spatial coupling effect of the antenna, the electrical pulse sampling line often affects the electricity meter calibration device, causing gross errors and affecting the judgment of test results. Furthermore, some exported electricity meters are designed with only optical pulse output and no electrical pulse sampling output, requiring the testing process to rely solely on pulse signal indicator light sampling. Therefore, another commonly used detection method is to collect the optical pulse output signal of the electricity meter, convert the optical pulse signal into an electrical signal through a photoelectric acquisition device, and then analyze and detect it. Optical pulse acquisition is relatively stable, but in power frequency magnetic field and radio frequency radiation electromagnetic field tests, the sampler power supply circuit may occasionally be affected by spatial electromagnetic field interference, causing acquisition interruption, or the spatial coupling effect of the two-core transmission line of the converted electrical signal may affect the electricity meter calibration device, causing gross errors and affecting the judgment of test results. The optical pulse output signal on the electricity meter is output through indicator lights, divided into active pulse signal indicator lights and reactive pulse signal indicator lights. During sampling, the position of the photoelectric acquisition device needs to be manually switched to test the influence of active and reactive errors, requiring manual intervention, posing safety risks, and resulting in low detection efficiency. Furthermore, under no-load conditions, the change in electricity consumption of the electricity meter can only be determined by manually observing the optical pulse signal lights, and cannot be monitored using a photoelectric acquisition device. Summary of the Invention

[0003] The purpose of this invention is to provide a photoelectric data acquisition device and method for an energy meter used in electromagnetic compatibility immunity testing, so as to solve the technical problems of existing photoelectric data acquisition devices having large signal interference and being unable to automatically perform active and reactive power sampling.

[0004] To solve the above-mentioned technical problems, the specific technical solution of the photoelectric data acquisition device and method for electromagnetic compatibility immunity testing of an energy meter according to the present invention is as follows: A photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing includes a first load battery, a first load battery switch, a pulse counter, a pulse counter switch, a light pulse collector, an optical fiber, a programmable displacement fixture, and a second load battery. The light pulse collector is connected to the pulse counter switch, and the pulse counter switch is connected to a pulse counter. The first load battery is connected to the first load battery switch, and the first load battery switch is connected to the power input terminal of the light pulse collector. The optical signal input terminal of the light pulse collector is connected to the optical fiber, which is fixed to the programmable displacement fixture. The second load battery is connected to the programmable displacement fixture, providing operating power to the fixture. The optical pulse collector is used to collect optical pulse signals. The optical fiber is used to transmit the collected optical signal to the optical pulse collector. The programmable displacement fixture is used to move the optical fiber to align with the active pulse signal indicator or reactive pulse signal indicator on the energy meter to conduct active power error influence test and reactive power error influence test respectively.

[0005] Furthermore, it includes anti-interference signal lines, which include anti-interference signal line one, anti-interference signal line two, and anti-interference signal line three. The optical pulse collector has two electrical signal outputs. One output is connected to the 5-pin aviation connector of the optical pulse collector through anti-interference signal line one, and the other output is connected to the pulse counter switch through anti-interference signal line two. The first load battery switch is connected to anti-interference signal line three, and anti-interference signal line three is connected to the power input terminal of the optical pulse collector. The anti-interference signal lines are used to suppress high-frequency common-mode interference signals caused by the spatial coupling interference electromagnetic field between the optical pulse collector and the interconnection signal lines.

[0006] Furthermore, the output voltage of the first load battery and the second load battery is 5V.

[0007] Furthermore, the anti-interference signal line consists of two common-mode chokes connected in series.

[0008] Furthermore, the common-mode choke inductance is 1mH, and the core material is ferrite.

[0009] Furthermore, the programmable displacement fixture includes a clamping platform, a displacement device, and an optical fiber fixing device. The clamping platform is made of iron and has a groove in the middle. The displacement device is fixed to the platform by magnetic attraction. The front end of the displacement device has a telescopic rod, which is fixedly connected to the optical fiber fixing device. The optical fiber fixing device vertically fixes the optical fiber. The lower end of the optical fiber fixing device passes through the groove and can move horizontally along the groove under the action of the displacement device. The clamping platform has clamping arms on both sides, and suction cups are located inside the clamping arms. The clamping arms clamp the two sides of the energy meter and are fixed by the suction cups. The displacement device contains a control chip, which is communicatively connected to a remote controller. The remote controller controls the telescopic rod of the displacement device to extend and retract, thereby driving the optical fiber on the optical fiber fixing device to move horizontally along the groove, so that the port of the optical fiber is aligned with the active or reactive light pulse signal light of the energy meter, realizing automatic switching between active and reactive power measurement.

[0010] Furthermore, the displacement device is communicatively connected to a host computer, which controls the movement of the displacement device.

[0011] Furthermore, the connection between the clamping arm and the clamping platform has a long strip-shaped connector, and the connection between the clamping platform and the clamping arm has a sliding groove for the long strip-shaped connector to extend and retract. The clamping arm and the clamping platform are telescopically connected, and the two clamping arms are held together by spring tension.

[0012] This invention also discloses a photoelectric data acquisition method for an energy meter used in electromagnetic compatibility immunity testing, including detection under load conditions and detection under no-load conditions. The detection steps under load conditions are as follows: Step 1: Connect the pulse input port of the electricity meter testing device to the 5-pin aviation connector of the optical pulse collector via a 5-pin pulse cable; Step 2: Connect the voltage and current output terminals of the electricity meter testing device to the voltage and current terminals of the electricity meter via voltage and current lines; Step 3: The electricity meter testing device and electromagnetic compatibility equipment are respectively connected to the host computer for communication. Step 4: Connect the programmable displacement fixture to the remote control or host computer for communication; Step 5: The host computer program automatically tests the active power error impact quantity and records the data by controlling the electricity meter testing device and electromagnetic compatibility equipment; Step 6: After the test, use a remote control or host computer to control the programmable displacement fixture to move the optical fiber to the reactive pulse signal indicator light, and then conduct the reactive error influence test again.

[0013] Furthermore, the detection steps under no-load conditions are as follows: Step 1: Turn on the first load battery switch. The first load battery is connected to the power terminal of the optical pulse collector through the anti-interference signal line 3 to provide a stable operating voltage to the optical pulse collector. Step 2: Turn on the pulse counter switch. Connect the electrical signal output terminal of the optical pulse collector to the electrical signal input terminal of the pulse counter through the anti-interference signal line 2. Step 3: Test the voltage of the electricity meter, or connect the voltage regulator to the electricity meter via a voltage line to provide the electricity meter's operating voltage; Step 4: The electricity meter testing device and electromagnetic compatibility equipment are respectively connected to the host computer for communication. Step 5: Connect the programmable displacement fixture to the remote control or host computer for communication; Step 6: The host computer program controls the energy meter testing device and electromagnetic compatibility equipment to perform automated testing of no-load active power interference, and monitors the change in the energy meter's power consumption based on the data recorded by the pulse counter. Step 7: After the test, use a remote control or host computer to control the programmable displacement fixture to move the optical fiber to the reactive pulse signal indicator light, and then conduct the reactive interference test again.

[0014] The photoelectric data acquisition device and method for electromagnetic compatibility immunity testing of an energy meter according to the present invention have the following advantages: 1. The device of the present invention has a programmable displacement fixture. Only one acquisition device is needed to realize the automatic switching sampling of active and reactive light pulses of the energy meter. The width of the programmable displacement fixture is adjustable, which is highly versatile and can be adapted to energy meters with various appearance structures. It reduces the calibration time, improves the level of automated detection, and reduces the safety risks that exist when the original staff manually move the photoelectric sampler.

[0015] 2. This invention uses a light-guiding fiber sampling method to keep the photoelectric collector away from the surface of the electricity meter, which can reduce the influence of spatial electromagnetic fields such as power frequency magnetic fields and radio frequency radiation electromagnetic fields on the photoelectric collector. It can also be applied to the sampling of light pulse signals in other environmental tests such as alternating damp heat, high and low temperature, and waterproofing, making the signal acquisition more stable and reliable. The photoelectric acquisition device can be applied to all influence quantity tests of electricity meters.

[0016] 3. The optical pulse collector of this invention employs common-mode choke filtering between itself and its components to avoid electromagnetic interference from electrical signal transmission lines, thereby enhancing the stability of the sampling signal. In particular, for power frequency magnetic field and radio frequency radiated electromagnetic field tests, this device exhibits a certain degree of anti-interference performance against these two spatial electromagnetic field tests.

[0017] 4. The data acquisition device of the present invention can be applied to other influence quantity tests of energy meters that can only use optical pulse signal lamp sampling method.

[0018] 5. The device of the present invention can connect the load power supply and the pulse counter through a switch, which solves the problem of monitoring the change in the amount of electricity in the energy meter under no-load conditions and electromagnetic compatibility interference. It can also be applied to other influence quantity tests. Attached Figure Description

[0019] Figure 1 This is a block diagram of the photoelectric data acquisition device module for the energy meter used in the electromagnetic compatibility immunity test of the present invention. Figure 2 This is a schematic diagram of the anti-interference signal line structure of the present invention; Figure 3 This is a block diagram of the programmable displacement fixture structure of the present invention; Figure 4 This is a schematic diagram of the specific structure of the programmable displacement fixture of the present invention; Figure 5 This is a schematic diagram showing the specific connection of the photoelectric acquisition system under load conditions; Figure 6 This is a schematic diagram of the photoelectric data acquisition system connection under no-load conditions. Figure 7 This is a schematic diagram showing the specific connection of the photoelectric acquisition system under no-load conditions; The markings in the diagram are as follows: 1. Clamping platform; 11. Slide groove; 12. Clamping arm; 121. Long strip connector; 13. Suction cup; 14. Spring; 2. Displacement device; 21. Telescopic rod; 3. Fiber optic fixing device; 4. Optical fiber. Implementation

[0020] To better understand the purpose, structure, and function of this invention, the following detailed description, in conjunction with the accompanying drawings, provides an optical photoelectric data acquisition device and method for electromagnetic compatibility immunity testing of an energy meter.

[0021] like Figure 1 As shown, the photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to the present invention includes an anti-interference signal line, a first load battery, a first load battery switch, a pulse counter, a pulse counter switch, a light pulse collector, an optical fiber, a programmable displacement fixture, and a second load battery. The anti-interference signal line includes anti-interference signal line one, anti-interference signal line two, and anti-interference signal line three.

[0022] The optical pulse collector has two electrical signal outputs. One output is connected to the 5-pin aviation connector of the optical pulse collector via anti-interference signal line one, and the other is connected to a pulse counter switch via anti-interference signal line two. The pulse counter switch is connected to a pulse counter. A first load battery is connected to a first load battery switch, which is connected to anti-interference signal line three, which is connected to the power input terminal of the optical pulse collector. The optical signal input terminal of the optical pulse collector is connected to a light guide fiber, which is fixed to a programmable displacement fixture. A second load battery is connected to the programmable displacement fixture, providing power to it. The optical pulse collector is used to collect optical pulse signals. The light guide fiber is used to transmit the collected optical signals to the optical pulse collector. The programmable displacement fixture is used to move the light guide fiber to align with the active or reactive pulse signal indicator light on the energy meter for active and reactive power error influence tests, respectively. The anti-interference signal lines are used to suppress high-frequency common-mode interference signals caused by spatial coupling interference electromagnetic fields between the optical pulse collector and the interconnecting signal lines.

[0023] The output voltage of the first and second load batteries is 5V.

[0024] like Figure 2 As shown, the anti-interference signal line consists of two common-mode chokes connected in series. The optical pulse collector converts the acquired light pulse signal from the energy meter into a DC 5V square wave signal. The common-mode choke can transmit differential-mode signals, and DC differential-mode signals can pass through. However, it presents a large impedance for high-frequency common-mode noise. During the detection process, the photoelectric collector circuit and the interconnecting signal lines are also coupled to high-frequency common-mode interference signals through space. Therefore, common-mode chokes can be used to suppress common-mode interference. After experimental verification, winding two common-mode chokes with an inductance of 1mH and ferrite core material, used for connecting the optical pulse collector to the load battery, energy meter calibration device, and pulse counter, can effectively suppress common-mode interference.

[0025] like Figure 3 Figure 4As shown, the programmable displacement fixture includes a clamping platform 1, a displacement device 2, and an optical fiber fixing device 3. The clamping platform 1 is made of iron and has a groove 11 in the middle. The displacement device 2 is fixed to the platform by magnetic attraction, which can adapt to the different positions of the light pulse signal lights of different energy meters. The front end of the displacement device 2 has a telescopic rod 21, which is fixedly connected to the optical fiber fixing device 3. The optical fiber fixing device 3 vertically fixes the light guiding optical fiber 4. The lower end of the optical fiber fixing device 3 passes through the groove 11 and can move horizontally along the groove 11 under the drive of the displacement device 2. The clamping platform 1 has clamping arms 12 on both sides. The clamping arms 12 have a long strip connector 121 at the connection between the clamping platform 1 and the clamping arm 12. The connection between the clamping platform 1 and the clamping arm 12 has a sliding groove for the long strip connector 121 to extend and retract. The clamping arms 12 and the clamping platform 1 are telescopically connected. The two clamping arms 12 are held together by a spring 14. The inner side of the clamping arm 12 has a suction cup 13. The clamping arm 12 is clamped on both sides of the energy meter and fixed by the suction cup 13. The displacement device 2 contains a control chip, which communicates with a remote controller. The remote controller controls the extension and retraction of the telescopic rod 21 of the displacement device 2, thereby moving the optical fiber 4 on the optical fiber fixing device 3 horizontally along the slide groove 11. This aligns the port of the optical fiber 4 with the active or reactive light pulse signal lamp of the energy meter, achieving automatic switching between active and reactive power measurement. Preferably, the displacement device 2 has an expandable programmable interface, allowing it to connect to a host computer for communication. The host computer's program controls the movement of the displacement device 2, achieving intelligent detection.

[0026] like Figure 5 As shown, the detection steps under load conditions are as follows: Step 1: Connect the pulse input port of the electricity meter testing device to the 5-pin aviation connector of the optical pulse collector via a 5-pin pulse cable; Step 2: Connect the voltage and current output terminals of the electricity meter testing device to the voltage and current terminals of the electricity meter via voltage and current lines; Step 3: The electricity meter testing device and electromagnetic compatibility equipment are respectively connected to the host computer for communication. Step 4: Connect the programmable displacement fixture to the remote control or host computer for communication; Step 5: The host computer program automatically tests the active power error impact quantity and records the data by controlling the electricity meter testing device and electromagnetic compatibility equipment; Step 6: After the test, use a remote control or host computer to control the programmable displacement fixture to move the optical fiber to the reactive pulse signal indicator light, and then conduct the reactive error influence test again.

[0027] like Figure 6 Figure 7 As shown, under no-load conditions, the detection steps are as follows: Step 1: Turn on the first load battery switch. The first load battery is connected to the power terminal of the optical pulse collector through the anti-interference signal line 3 to provide a stable operating voltage to the optical pulse collector. Step 2: Turn on the pulse counter switch. Connect the electrical signal output terminal of the optical pulse collector to the electrical signal input terminal of the pulse counter through the anti-interference signal line 2. Step 3: Test the voltage of the electricity meter, or connect the voltage regulator to the electricity meter via a voltage line to provide the electricity meter's operating voltage; Step 4: The electricity meter testing device and electromagnetic compatibility equipment are respectively connected to the host computer for communication. Step 5: Connect the programmable displacement fixture to the remote control or host computer for communication; Step 6: The host computer program controls the energy meter testing device and electromagnetic compatibility equipment to perform automated testing of no-load active power interference, and monitors the change in the energy meter's power consumption based on the data recorded by the pulse counter. Step 7: After the test, use a remote control or host computer to control the programmable displacement fixture to move the optical fiber to the reactive pulse signal indicator light, and then conduct the reactive interference test again.

[0028] The experiment revealed that because the operating voltage of the optical pulse collector is provided by the electricity meter calibration device, and the interconnection cable between them is very long, spatial coupling interference can affect the power supply of the optical pulse collector. This leads to a decrease in the voltage of the square wave signal output by the optical pulse collector, which in turn affects the logic judgment of the electricity meter calibration device. Therefore, an external 5V load battery is introduced to provide a stable power signal for the optical pulse collector. Transmitting the optical signal through optical fiber can keep the optical pulse collector away from the surface of the electricity meter, reducing the intensity of the spatial radiated electromagnetic field. Experimenters also do not need to be close to the electricity meter for observation, thus avoiding long-term close contact with the interference field and the impact on their health.

[0029] This invention requires only a single photoelectric acquisition device to automatically switch between active and reactive light pulse sampling of electricity meters, reducing detection time, improving the level of automation, and minimizing the safety risks associated with manual movement of the photoelectric sampler. Employing a long-distance sampling method using optical fiber, the photoelectric sampler is kept away from the electricity meter surface, reducing the influence of spatial electromagnetic fields such as power frequency magnetic fields and radio frequency radiation electromagnetic fields on the sampler. It can also be applied to light pulse signal sampling in other environmental tests such as alternating damp heat, high and low temperatures, and waterproofing, making signal acquisition more stable and reliable. The photoelectric acquisition device of this invention can be applied to all influence quantity tests of electricity meters. It can also be applied to other influence quantity tests of electricity meters that can only use light pulse signal lamp sampling methods. This invention solves the problem of monitoring electricity meter power change under no-load conditions and electromagnetic compatibility interference, and can also be applied to other influence quantity tests.

[0030] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing, characterized in that, The device includes a first load battery, a first load battery switch, a pulse counter, a pulse counter switch, an optical pulse collector, an optical fiber, a programmable displacement fixture, and a second load battery. The optical pulse collector is connected to the pulse counter switch, and the pulse counter switch is connected to a pulse counter. The first load battery is connected to the first load battery switch, and the first load battery switch is connected to the power input terminal of the optical pulse collector. The optical signal input terminal of the optical pulse collector is connected to the optical fiber, which is fixed to the programmable displacement fixture. The second load battery is connected to the programmable displacement fixture and provides operating power to it. The optical pulse collector is used to collect optical pulse signals. The optical fiber is used to transmit the collected optical signal to the optical pulse collector. The programmable displacement fixture is used to move the optical fiber to align with the active pulse signal indicator or reactive pulse signal indicator on the energy meter to conduct active power error influence test and reactive power error influence test respectively.

2. The photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to claim 1, characterized in that, The system includes anti-interference signal lines, namely anti-interference signal line one, anti-interference signal line two, and anti-interference signal line three. The optical pulse collector has two electrical signal outputs. One output is connected to the 5-pin aviation connector of the optical pulse collector via anti-interference signal line one, and the other output is connected to the pulse counter switch via anti-interference signal line two. The first load battery switch is connected to anti-interference signal line three, and anti-interference signal line three is connected to the power input terminal of the optical pulse collector. The anti-interference signal lines are used to suppress high-frequency common-mode interference signals caused by the spatial coupling interference electromagnetic field between the optical pulse collector and the interconnection signal lines.

3. The photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to claim 1, characterized in that, The first and second load batteries have an output voltage of 5V.

4. The photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to claim 2, characterized in that, The anti-interference signal line consists of two common-mode chokes connected in series.

5. The photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to claim 4, characterized in that, The common-mode choke has an inductance of 1mH and a core material of ferrite.

6. The photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to claim 1, characterized in that, The programmable displacement fixture includes a clamping platform (1), a displacement device (2), and an optical fiber fixing device (3). The clamping platform (1) is made of iron and has a groove (11) in the middle. The displacement device (2) is fixed to the platform by magnetic attraction. The front end of the displacement device (2) has a telescopic rod (21), which is fixedly connected to the optical fiber fixing device (3). The optical fiber fixing device (3) vertically fixes the optical fiber (4). The lower end of the optical fiber fixing device (3) passes through the groove (11) and can move horizontally along the groove (11) under the drive of the displacement device (2). The clamping platform (1) has clamping arms (12) on both sides, and suction cups (13) are located inside the clamping arms (12). The clamping arms (12) are clamped on both sides of the energy meter and fixed by the suction cups (13). The displacement device (2) has a control chip inside. The control chip is connected to the remote controller. The remote controller controls the extension rod (21) of the displacement device (2) to extend and retract, thereby driving the optical fiber (4) on the optical fiber fixing device (3) to move horizontally along the slide groove (11), so that the port of the optical fiber (4) is aligned with the active light pulse signal lamp or the reactive light pulse signal lamp of the energy meter, thereby realizing the automatic switching of active and reactive measurement.

7. The photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to claim 6, characterized in that, The displacement device (2) is connected to the host computer for communication, and the host computer controls the movement of the displacement device (2).

8. The photoelectric data acquisition device for an energy meter used in electromagnetic compatibility immunity testing according to claim 6, characterized in that, The clamping arm (12) has a long strip connector (121) at the connection with the clamping platform (1), and the clamping platform (1) has a sliding groove for the long strip connector (121) to extend and retract at the connection with the clamping arm (12). The clamping arm (12) and the clamping platform (1) are telescopically connected, and the two clamping arms (12) are clamped together by a spring (14).

9. A method for photoelectric data acquisition using the photoelectric data acquisition device of an energy meter for electromagnetic compatibility immunity testing as described in any one of claims 1-8, characterized in that, This includes detection under load conditions and detection under no-load conditions. The detection steps under load conditions are as follows: Step 1: Connect the pulse input port of the electricity meter testing device to the 5-pin aviation connector of the optical pulse collector via a 5-pin pulse cable; Step 2: Connect the voltage and current output terminals of the electricity meter testing device to the voltage and current terminals of the electricity meter via voltage and current lines; Step 3: The electricity meter testing device and electromagnetic compatibility equipment are respectively connected to the host computer for communication. Step 4: Connect the programmable displacement fixture to the remote control or host computer for communication; Step 5: The host computer program automatically tests the active power error impact quantity and records the data by controlling the electricity meter testing device and electromagnetic compatibility equipment; Step 6: After the test, use a remote control or host computer to control the programmable displacement fixture to move the optical fiber to the reactive pulse signal indicator light, and then conduct the reactive error influence test again.

10. The method according to claim 9, characterized in that, The detection steps under no-load conditions are as follows: Step 1: Turn on the first load battery switch. The first load battery is connected to the power terminal of the optical pulse collector through the anti-interference signal line 3 to provide a stable operating voltage to the optical pulse collector. Step 2: Turn on the pulse counter switch. Connect the electrical signal output terminal of the optical pulse collector to the electrical signal input terminal of the pulse counter through the anti-interference signal line 2. Step 3: Test the voltage of the electricity meter, or connect the voltage regulator to the electricity meter via a voltage line to provide the electricity meter's operating voltage; Step 4: The electricity meter testing device and electromagnetic compatibility equipment are respectively connected to the host computer for communication. Step 5: Connect the programmable displacement fixture to the remote control or host computer for communication; Step 6: The host computer program controls the energy meter testing device and electromagnetic compatibility equipment to perform automated testing of no-load active power interference, and monitors the change in the energy meter's power consumption based on the data recorded by the pulse counter. Step 7: After the test, use a remote control or host computer to control the programmable displacement fixture to move the optical fiber to the reactive pulse signal indicator light, and then conduct the reactive interference test again.

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