CN211860117U - Communication test experiment platform for electric energy metering equipment - Google Patents
Communication test experiment platform for electric energy metering equipment Download PDFInfo
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- CN211860117U CN211860117U CN202020688532.XU CN202020688532U CN211860117U CN 211860117 U CN211860117 U CN 211860117U CN 202020688532 U CN202020688532 U CN 202020688532U CN 211860117 U CN211860117 U CN 211860117U
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Abstract
The utility model relates to a communication test experimental platform for electric energy metering equipment, which comprises an industrial personal computer, the industrial personal computer is connected with the program-controlled simulator, the spectrum analyzer, the program-controlled signal attenuator and the oscilloscope, the platform also comprises a first artificial power supply network and a second artificial power supply network, wherein one end of the first artificial power supply network is respectively connected with the spectrum analyzer and the oscilloscope, the other end of the first artificial power supply network is respectively connected with the program control signal attenuator and the carrier wave transmitter to be detected, one end of the second artificial power supply network is respectively connected with the spectrum analyzer and the oscilloscope, the other end of the second artificial power supply network is respectively connected with the program-controlled signal attenuator and the carrier wave receiver to be detected, and the first artificial power supply network and the second artificial power supply network are connected with a voltage-stabilized power supply. Compared with the prior art, the utility model has the advantages of can carry out to electric energy metering device multiple type experiment etc.
Description
Technical Field
The utility model belongs to the technical field of the communication test technique and specifically relates to a communication test experiment platform for electric energy metering equipment is related to.
Background
The electric energy metering device is a metering instrument used for measuring and recording generated energy, supplied (mutually supplied) electric quantity, station service electric quantity, line loss electric quantity and user electric quantity. The electric energy metering device is an overall body composed of an electric energy meter (an active electric energy meter, a reactive electric energy meter, a maximum demand meter, a multi-rate electric energy meter and the like), a metering mutual inductor (comprising a voltage mutual inductor and a current mutual inductor) and a secondary connecting wire.
Aiming at the electric energy metering equipment, various simulation experiment tests are required, wherein one test is an acquisition terminal simulation experiment, the acquisition terminal operation simulation experiment is used for carrying out simulation real-time control on the operation condition of the acquisition equipment, acquiring information whether the acquisition equipment can normally work or not, combining data such as electric energy called by a main station and the like and electric energy meter memory data, verifying that the acquisition terminal can accurately acquire various data and events, and the acquisition success rate meets the standard requirement.
Therefore, for the simulation experiment of the acquisition terminal of the electric energy metering device, a targeted single-class communication test platform is needed to be developed urgently to test the signal transmission characteristics of the electric energy metering device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a communication test experiment platform for electric energy metering equipment in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
a communication test experiment platform for electric energy metering equipment comprises an industrial personal computer connected with a program-controlled simulator, a spectrum analyzer, a program-controlled signal attenuator and an oscilloscope, the platform also comprises a first artificial power supply network and a second artificial power supply network, wherein one end of the first artificial power supply network is respectively connected with the spectrum analyzer and the oscilloscope, the other end of the first artificial power supply network is respectively connected with the program control signal attenuator and the carrier wave transmitter to be detected, one end of the second artificial power supply network is respectively connected with the spectrum analyzer and the oscilloscope, the other end of the second artificial power supply network is respectively connected with the program-controlled signal attenuator and the carrier wave receiver to be detected, and the first artificial power supply network and the second artificial power supply network are connected with a voltage-stabilized power supply.
Further, the programmable simulator comprises a programmable noise simulator and a programmable impedance simulator.
Further, the oscilloscope adopts a digital oscilloscope.
Furthermore, the stabilized voltage power supply adopts an alternating current stabilized voltage power supply.
Furthermore, the tested carrier wave receiver is also connected with the program-controlled simulator.
Further, the first artificial power supply network adopts a V-shaped artificial power supply network.
Further, the second artificial power supply network adopts a V-shaped artificial power supply network.
Further, the platform is also connected with the tested carrier wave transmitter through a computer alone.
Furthermore, the measurement bandwidth of the spectrum analyzer is 100 Hz-9000 Hz.
Furthermore, the working frequency of the spectrum analyzer is 3 kHz-5 MHz.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the platform is with strong points, the utility model discloses the platform includes the industrial computer, the industrial computer is with programme-controlled simulator, the spectrum analyzer, programme-controlled signal attenuator and oscilloscope are connected, this platform still includes first artificial power supply network and second artificial power supply network, first artificial power supply network's one end is connected with spectrum analyzer and oscilloscope respectively, first artificial power supply network's the other end is connected with programme-controlled signal attenuator respectively and surveyed the carrier wave and send the ware to be connected, the one end of second artificial power supply network is connected with spectrum analyzer and oscilloscope respectively, the other end of second artificial power supply network is connected with programme-controlled signal attenuator respectively and surveyed the carrier wave receiver, first artificial power supply network and second artificial power supply network all are connected with constant voltage power supply, this platform can be applicable to electric energy metering equipment's communication test.
(2) Application scope is wide, the utility model discloses the platform can be used for the test of electric energy metering equipment's carrier signal frequency and level, the test of the carrier signal maximum output level and outband interference level, the test of receiving sensitivity, interference immunity test and impedance adaptability test.
Drawings
FIG. 1 is a structural diagram of a test experiment platform of the present invention;
fig. 2 is an application diagram of the practical test of the frequency and level of the carrier signal of the test experiment platform of the utility model;
fig. 3 is an actual experimental application diagram of the carrier receiving sensitivity and anti-interference test of the test experiment platform of the utility model;
fig. 4 is the utility model discloses the actual test application of test experiment platform impedance adaptability test is illustrated.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
If fig. 1 does the utility model discloses test experiment platform's structural schematic diagram, this platform includes the industrial computer, the industrial computer and programme-controlled simulator, the spectrum analyzer, programme-controlled signal attenuator and oscilloscope are connected, this platform still includes first artificial power supply network and second artificial power supply network, first artificial power supply network's one end is connected with spectrum analyzer and oscilloscope respectively, first artificial power supply network's the other end is connected with programme-controlled signal attenuator and surveyed the carrier wave transmitter respectively, the one end of second artificial power supply network is connected with spectrum analyzer and oscilloscope respectively, the other end of second artificial power supply network is connected with programme-controlled signal attenuator and surveyed the carrier wave receiver respectively, first artificial power supply network and second artificial power supply network all are connected with constant voltage power supply, it still is connected with programme-controlled simulator to be surveyed the carrier wave receiver.
In the embodiment, the program-controlled simulator comprises a program-controlled noise simulator and a program-controlled impedance simulator, the oscilloscope adopts a digital oscilloscope, the voltage-stabilized power supply adopts an alternating current voltage-stabilized power supply, the first artificial power supply network and the second artificial power supply network both adopt V-shaped artificial power supply networks, the platform is also independently connected with a carrier transmitter to be tested through a computer, the measurement bandwidth of the spectrum analyzer is 100 Hz-9000 Hz, and the working frequency is 3 kHz-5 MHz.
The utility model discloses an actual test is used as follows:
(1) testing of carrier signal frequency and level
The test circuit for the carrier signal frequency and level is shown in fig. 2. And (3) carrying out carrier signal frequency and level test on the equipment on the tested simulation platform by using the spectrum analyzer and the artificial power supply network specified in the figure. The carrier signal frequency and level limits should meet the requirements of table 1.
Table 1: success rate index of one time reading under test condition (DL/T698)
| Terminal downlink channel type | Success rate of one-time reading |
| Wired | >98 |
| Wireless | >90 |
| Power line carrier | >80 |
(2) Carrier signal maximum output level and out-of-band interference level test
The electric energy metering equipment is in a continuous sending state, the highest point of the output level is found out in the carrier frequency band by using the frequency spectrograph, and the level value at the moment is recorded as V1. The highest output level is found out of the carrier frequency band, and the level value at this time is denoted as V2. The values of V1 and V2 should meet the following requirements:
table 2: output signal level limit
Table 3: out-of-band disturbance level limit
(3) Test of receiving sensitivity
The receiving sensitivity test structure is as shown in fig. 3, and tests whether the carrier receiver can normally receive the signal of the carrier transmitter under a certain attenuation. The program-controlled signal attenuator effectively attenuates the carrier signal, and the attenuation range can meet the requirement of minimum level of sensitivity measurement. The reception sensitivity is a minimum level requirement when the communication success rate is not less than 50%.
(4) Test for interference resistance
The high-speed D/A inside the anti-interference test noise simulator can effectively recover various noise signals, including the noise signals recorded from the site, and the effective bandwidth and the output amplitude of the noise signals directly reflect the size of site noise. The anti-interference level is the signal-to-noise ratio when the communication success rate is not less than 50%.
(5) Impedance suitability test
The impedance adaptability test structure is shown in fig. 4, different types of impedance topological structures are combined in different modes according to the parallel connection and series connection models of unit impedance, corresponding impedance characteristics on a test loop can be changed, and various impedance levels under different carrier frequencies are preset by a test system.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A communication test experiment platform for electric energy metering equipment is characterized by comprising an industrial personal computer, the industrial personal computer is connected with the program-controlled simulator, the spectrum analyzer, the program-controlled signal attenuator and the oscilloscope, the platform also comprises a first artificial power supply network and a second artificial power supply network, wherein one end of the first artificial power supply network is respectively connected with the spectrum analyzer and the oscilloscope, the other end of the first artificial power supply network is respectively connected with the program control signal attenuator and the carrier wave transmitter to be detected, one end of the second artificial power supply network is respectively connected with the spectrum analyzer and the oscilloscope, the other end of the second artificial power supply network is respectively connected with the program-controlled signal attenuator and the carrier wave receiver to be detected, and the first artificial power supply network and the second artificial power supply network are connected with a voltage-stabilized power supply.
2. The communication test experiment platform for the electric energy metering device as claimed in claim 1, wherein the programmable simulator comprises a programmable noise simulator and a programmable impedance simulator.
3. The communication test experiment platform for the electric energy metering equipment as claimed in claim 1, wherein the oscilloscope is a digital oscilloscope.
4. The communication test experiment platform for the electric energy metering equipment as claimed in claim 1, wherein the stabilized voltage power supply is an alternating current stabilized voltage power supply.
5. The communication test experiment platform for the electric energy metering device as claimed in claim 1, wherein the tested carrier receiver is further connected with the program-controlled simulator.
6. The communication test experiment platform for the electric energy metering equipment as claimed in claim 1, wherein the first artificial power supply network is a V-shaped artificial power supply network.
7. The communication test experiment platform for the electric energy metering equipment as claimed in claim 1, wherein the second artificial power supply network is a V-shaped artificial power supply network.
8. The communication test experiment platform for the electric energy metering equipment is characterized in that the platform is also connected with the tested carrier wave transmitter through a computer alone.
9. The communication test experiment platform for the electric energy metering equipment as claimed in claim 1, wherein the measurement bandwidth of the spectrum analyzer is 100 Hz-9000 Hz.
10. The communication test experiment platform for the electric energy metering equipment as claimed in claim 1, wherein the operating frequency of the spectrum analyzer is 3 kHz-5 MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020688532.XU CN211860117U (en) | 2020-04-29 | 2020-04-29 | Communication test experiment platform for electric energy metering equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020688532.XU CN211860117U (en) | 2020-04-29 | 2020-04-29 | Communication test experiment platform for electric energy metering equipment |
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| CN211860117U true CN211860117U (en) | 2020-11-03 |
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| CN202020688532.XU Active CN211860117U (en) | 2020-04-29 | 2020-04-29 | Communication test experiment platform for electric energy metering equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691283A (en) * | 2021-09-18 | 2021-11-23 | 广东电网有限责任公司 | Carrier communication equipment performance test platform |
| CN113890566A (en) * | 2021-10-26 | 2022-01-04 | 广东电网有限责任公司 | Platform and method for testing conventional performance indexes of power line carrier communication equipment |
-
2020
- 2020-04-29 CN CN202020688532.XU patent/CN211860117U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691283A (en) * | 2021-09-18 | 2021-11-23 | 广东电网有限责任公司 | Carrier communication equipment performance test platform |
| CN113890566A (en) * | 2021-10-26 | 2022-01-04 | 广东电网有限责任公司 | Platform and method for testing conventional performance indexes of power line carrier communication equipment |
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