CN111654311B - Power line carrier simulation operation test system and method thereof - Google Patents
Power line carrier simulation operation test system and method thereof Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/48—Testing attenuation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/487—Testing crosstalk effects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B3/00—Line transmission systems
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Abstract
The invention relates to a power line carrier simulation operation test system and a method thereof, wherein the system comprises a communication module supporting unit, a channel parameter simulation unit, a carrier signal sampling unit, a radio frequency performance detection unit, a measurement and control man-machine interaction unit and a direct current power supply unit, wherein the communication module supporting unit and the channel parameter simulation unit are respectively connected with a communication module to be tested, the communication module to be tested is distributed and arranged at a master node and a plurality of slave nodes, the channel parameter simulation unit is connected with the radio frequency performance detection unit through the carrier signal sampling unit, and the measurement and control man-machine interaction unit and the direct current power supply unit are respectively connected with the radio frequency performance detection unit. Compared with the prior art, the invention provides a simulation system capable of providing different power line noise, access impedance and analog signal attenuation, and the power line carrier dynamic test can be reliably performed.
Description
Technical Field
The invention relates to the technical field of power line carrier testing, in particular to a power line carrier simulation operation testing system and a method thereof.
Background
The power line carrier communication is one of the main local communication modes of the low-voltage transformer area of the power consumption information acquisition system, and is widely applied to the construction of the power consumption information acquisition system by virtue of the characteristics of mature technology, simple construction, convenient operation and maintenance and the like, and the power line carrier simulation experiment is often needed to detect whether the performance of the power line carrier meets the index requirement or not in consideration of the fact that the actual use environment is very complex.
The existing simulation experiment mainly uses narrow-band carrier waves, as shown in fig. 1, the change condition of each module is considered and a hardware circuit is built for implementation, and then each module is injected into a purified simulation power grid, so that the simulation of the low-voltage power line carrier communication system is realized. The experimental system structure comprises: the system comprises a carrier wave transmitting module, a purifying power supply, a power grid topological structure, a load network, a noise interference source, a coupler, a carrier wave receiving module and other devices. The system transmits signals through the carrier module, the signals are transmitted in a purified power grid environment, and after the noise signals, the power grid topological structure and loads with different impedance values are artificially selected, the signal change condition is detected through the receiving module, so that noise interference and impedance transformation experiments are carried out.
The simulation experiment system is mainly used for detecting the radio frequency receiving and transmitting performance of the carrier communication module, can only statically reflect the technical indexes of the carrier communication module, lacks a laboratory carrier station environment simulation system, and is difficult to reflect the actual communication capability of the carrier communication module in a complex environment. When the actual environment adaptability test is carried out at the present stage, a certain actual platform area environment is mostly selected, and different types of carrier modules are used for actual data acquisition in turn. However, the state of the real area is complex and changeable, and many situations are difficult to repeatedly generate and have strong randomness. The power line has the characteristics of non-communication specificity and openness, noise signals with various characteristics are introduced simultaneously when a large number of electric devices are connected, and the electric devices are connected with certain randomness, so that the time-varying changes of impedance and attenuation are easy to cause. These problems increase the uncertainty of the power carrier communication and reduce the operational reliability. In general, a power line carrier channel has the following features:
(1) Interference signals encountered in a wide range, such as various electrical equipment of the user, particularly old and defective electrical appliances, can cause catastrophic interference with the signals transmitted over the power line.
(2) The access of the electric equipment has randomness, the impedance on the power network can be changed greatly along with the change of the load, and the electric equipment has strong time variability.
(3) The performance exhibited by each node on the power line is also not the same due to the strong attenuation characteristics.
In view of the above problems of the power line carrier channel and difficulty in ensuring the authenticity of the area environment, there is a strong need for a simulation system capable of performing channel environment parameters such as power line noise, access impedance, transmission characteristics (signal attenuation) and the like, so as to truly simulate various operating environments, and thus dynamically reflect the power line carrier performance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a power line carrier simulation operation test system and a method thereof.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a power line carrier emulation operation test system, includes communication module supporting element, channel parameter analog element, carrier signal sampling unit, radio frequency performance detecting element, observes and controls and man-machine interaction unit and direct current power supply unit, communication module supporting element and channel parameter analog element are respectively with the communication module interconnect that awaits measuring, the communication module distribution that awaits measuring sets up at master node and a plurality of slave node, be equipped with the district coupling degree adjustment unit between master node and a plurality of slave node, channel parameter analog element passes through carrier signal sampling unit and radio frequency performance detecting element interconnect, observe and control and interpersonal interaction unit, direct current power supply unit are connected to radio frequency performance detecting element respectively.
Further, the district coupling degree adjusting unit is respectively connected with the master node and the plurality of slave nodes through the channel parameter simulation unit.
Further, the channel parameter simulation unit includes a noise generator, a variable electrical load, and a signal attenuator.
Further, the noise output from the noise generator includes background noise, periodic noise, and bursty noise.
Further, the carrier signal sampling unit comprises a power frequency signal isolation module and a carrier signal sampling module which are sequentially connected.
Further, the radio frequency performance detection unit is specifically a standard instrument.
Further, the standard instrument comprises a spectrum analyzer, a digital oscilloscope and a noise signal acquisition and playback device.
Further, the spectrum analyzer is HP8594E, the digital oscilloscope is TDS520B, and the noise signal acquisition and playback device is WS-RPS101.
A power line carrier simulation operation test method comprises the following steps:
s1, power line noise interference test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
the channel parameter simulation unit outputs different noise signals to the power line channel;
the module supporting unit outputs meter reading instructions to the communication module to be tested which is positioned at the master node and the slave node;
the carrier signal sampling unit extracts carrier signals from the master node and the slave node from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal so as to complete power line noise interference test;
s2, impedance change interference test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
the channel parameter simulation unit outputs different impedance signals in a mode of transmitting sweep frequency signals and loads the different impedance signals on a power line channel;
the module supporting unit outputs meter reading instructions to the communication module to be tested which is positioned at the master node and the slave node;
the carrier signal sampling unit extracts carrier signals from the master node and the slave node from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal so as to complete impedance change interference test;
s3, signal attenuation test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
the channel parameter simulation unit outputs different signal attenuation values in a mode of transmitting sweep frequency signals, and the different signal attenuation values are loaded on a power line channel through the station area coupling degree adjusting unit;
the module supporting unit outputs meter reading instructions to the communication module to be tested which is positioned at the master node and the slave node;
the carrier signal sampling unit extracts carrier signals from the master node and the slave node from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal to finish signal attenuation test;
s4, crosstalk test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
selecting two adjacent nodes with overlapping areas as crosstalk test table areas;
the channel parameter simulation unit outputs a signal attenuation value in a mode of transmitting a sweep frequency signal, and the signal attenuation value is loaded to a power line channel of one node in the crosstalk test platform area through the platform area coupling degree adjusting unit;
the module supporting unit outputs a meter reading instruction to a communication module to be tested, wherein the communication module to be tested is positioned at the other node of the crosstalk test platform area;
the carrier signal sampling unit extracts a carrier signal from another node of the crosstalk test station area from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signal to obtain a carrier sampling signal;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal to complete crosstalk testing.
The working principle of the invention is as follows: setting a virtual master node and a plurality of corresponding slave nodes to simulate a real platform area environment, and respectively arranging communication modules to be tested on the master node and the slave nodes;
the measurement and control and man-machine interaction unit provides an operation interface and system control input, the communication module support unit provides working power supply, control signals and interaction data for the communication module to be tested, and the channel parameter simulation unit simulates power line noise, impedance change or signal attenuation according to the setting;
the carrier signals between the master node and the slave nodes are transmitted through the platform area coupling degree adjusting unit;
the carrier signal sampling unit extracts a transmitted carrier signal from the channel parameter simulation unit, sequentially performs power frequency signal isolation and carrier signal sampling processing on the carrier signal, and outputs a carrier sampling signal to the radio frequency performance detection unit;
the direct current power supply unit provides a direct current working power supply for the radio frequency performance detection unit, and the radio frequency performance detection unit respectively performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signals to complete the power line carrier simulation test process.
Compared with the prior art, the invention has the following advantages:
1. in addition, by using the platform area coupling degree adjusting unit, the running conditions of strong signals of the master node and weak signals of the slave nodes in the platform area environment can be further and truly simulated, so that the real data transmission capacity of the communication module can be conveniently tested.
2. The invention can simulate channel parameters comprising different power line noise, impedance variation and signal attenuation by arranging the channel parameter simulation unit, so that the invention can provide a simulation operation environment consistent with an actual operation environment and realize the purpose of dynamic test.
Drawings
FIG. 1 is a schematic diagram of a conventional narrow-band carrier simulation experiment system;
FIG. 2 is a schematic diagram of the structure of the present invention;
fig. 3 is a schematic physical structure diagram of a power line carrier simulation system in an embodiment;
the figure indicates: 1. a communication module supporting unit, 2, a channel parameter simulation unit, 3, a carrier signal sampling unit, 4, a radio frequency performance detection unit, 5, a measurement and control and man-machine interaction unit, and 6, a direct current power supply unit, 7, a communication module to be tested, 80, a master node, 81, a slave node, 9 and a platform area coupling degree adjusting unit.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Examples
As shown in fig. 2, a power line carrier simulation operation test system comprises a communication module supporting unit 1, a channel parameter simulation unit 2, a carrier signal sampling unit 3, a radio frequency performance detection unit 4, a measurement and control and man-machine interaction unit 5 and a direct current power supply unit 6, wherein the communication module supporting unit 1 and the channel parameter simulation unit 2 are respectively connected with a to-be-tested communication module 7, the communication module supporting unit 1 generates supporting conditions such as a power supply, a control signal, interaction data and the like of the normal operation of the to-be-tested communication module 7, and the channel parameter simulation unit 2 generates channel parameters such as different power line noise, impedance variation, signal attenuation and the like;
in low-voltage power carrier communication, the low-voltage power carrier communication is divided into a carrier master node and a carrier slave node, wherein the carrier master node is a master control end in a carrier channel, and the functions of overall coordination, meter reading, routing, control and the like of the whole carrier communication are realized, and the carrier slave node is passively managed and meter-read by the master node, so that the to-be-detected communication modules 7 are distributed and arranged on the master node 80 and the slave node 81, and the master node 80 and the slave node 81 are respectively connected with a station area coupling degree adjusting unit 9 through a channel parameter simulation unit 2 in a one-master-multiple-slave mode, and the station area coupling degree adjusting unit 9 is utilized for transmitting carrier signals;
the channel parameter simulation unit 2 is also connected with the radio frequency performance detection unit 4 through the carrier signal sampling unit 3, the carrier signal sampling unit 3 mainly performs power frequency signal isolation and carrier signal sampling, and the sampled signals are sent to the radio frequency performance detection unit 4 to perform radio frequency performance detection, and mainly comprises the operations of spectrum analysis, waveform detection, noise signal playback and the like;
the measurement and control and man-machine interaction unit 5 and the direct current power supply unit 6 are respectively connected to the radio frequency performance detection unit 4, the measurement and control and man-machine interaction unit 5 mainly provides functions of an operation interface, system control and the like, and the direct current power supply unit 6 is mainly used for supplying direct current power to the simulation system.
Specifically, the channel parameter simulation unit 2 includes a noise generator (for generating background noise, periodic noise and bursty noise), a variable electronic load and a signal attenuator, the carrier signal sampling unit 3 includes a power frequency signal isolation module and a carrier signal sampling module which are sequentially connected, the radio frequency performance detection unit 4 adopts a standard instrument form, and mainly includes a spectrum analyzer, a digital oscilloscope and a noise signal acquisition and playback device, in this embodiment, the spectrum analyzer selects HP8594E, the digital oscilloscope selects TDS520B, and the noise signal acquisition and playback device selects WS-RPS101.
The simulation operation test system is applied to practice, and the simulation test process comprises a power line noise interference test, an impedance change interference test, a signal attenuation test and a crosstalk test, and specifically comprises the following steps:
s1, power line noise interference test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
the channel parameter simulation unit outputs different noise signals to the power line channel;
the module supporting unit outputs meter reading instructions to the communication module to be tested which is positioned at the master node and the slave node;
the carrier signal sampling unit extracts carrier signals from the master node and the slave node from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal so as to complete power line noise interference test;
s2, impedance change interference test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
the channel parameter simulation unit outputs different impedance signals in a mode of transmitting sweep frequency signals and loads the different impedance signals on a power line channel;
the module supporting unit outputs meter reading instructions to the communication module to be tested which is positioned at the master node and the slave node;
the carrier signal sampling unit extracts carrier signals from the master node and the slave node from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal so as to complete impedance change interference test;
s3, signal attenuation test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
the channel parameter simulation unit outputs different signal attenuation values in a mode of transmitting sweep frequency signals, and the different signal attenuation values are loaded on a power line channel through the station area coupling degree adjusting unit;
the module supporting unit outputs meter reading instructions to the communication module to be tested which is positioned at the master node and the slave node;
the carrier signal sampling unit extracts carrier signals from the master node and the slave node from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal to finish signal attenuation test;
s4, crosstalk test: the module supporting unit respectively provides working power supplies for the communication module to be tested, the measurement and control and man-machine interaction unit, which are positioned at the master node and the slave node, and outputs control signals to the radio frequency performance detection unit and the direct current power supply unit to provide working power supplies for the radio frequency performance detection unit;
selecting two adjacent nodes with overlapping areas as crosstalk test table areas;
the channel parameter simulation unit outputs a signal attenuation value in a mode of transmitting a sweep frequency signal, and the signal attenuation value is loaded to a power line channel of one node in the crosstalk test platform area through the platform area coupling degree adjusting unit;
the module supporting unit outputs a meter reading instruction to a communication module to be tested, wherein the communication module to be tested is positioned at the other node of the crosstalk test platform area;
the carrier signal sampling unit extracts a carrier signal from another node of the crosstalk test station area from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signal to obtain a carrier sampling signal;
the radio frequency performance detection unit performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal to complete crosstalk testing.
In this embodiment, two master nodes and a plurality of corresponding slave nodes are provided in a multi-branch and multi-relay structure, as shown in fig. 3, a channel parameter simulation unit is configured between each master node and a plurality of corresponding slave nodes, and a carrier signal sampling unit is led out from one of the channel parameter simulation units connected with the master nodes, so that a simulation environment can be expanded, the complexity of simulation operation is increased, a more realistic actual operation environment can be simulated, and performance and environmental adaptability detection on power line carrier communication can be enhanced.
Claims (8)
1. The power line carrier simulation operation test method is applied to a power line carrier simulation operation test system and is characterized by comprising a communication module supporting unit (1), a channel parameter simulation unit (2), a carrier signal sampling unit (3), a radio frequency performance detection unit (4), a measurement and control and man-machine interaction unit (5) and a direct current power supply unit (6), wherein the communication module supporting unit (1) and the channel parameter simulation unit (2) are respectively connected with a to-be-tested communication module (7), the to-be-tested communication module (7) is distributed and arranged at a master node (80) and a plurality of slave nodes (81), a platform area coupling degree adjusting unit (9) is arranged between the master node (80) and the plurality of slave nodes (81), the channel parameter simulation unit (2) is connected with the radio frequency performance detection unit (4) through the carrier signal sampling unit (3), and the measurement and control and man-machine interaction unit and the direct current power supply unit (6) are respectively connected with the radio frequency performance detection unit (4);
the method comprises the following steps:
s1, power line noise interference test: the module support unit respectively provides working power supplies for the communication module (7) to be tested, the measurement and control and man-machine interaction unit (5) which are positioned at the master node (80) and the slave node (81), outputs control signals for the radio frequency performance detection unit (4), and the direct current power supply unit (6) provides working power supplies for the radio frequency performance detection unit (4);
the channel parameter simulation unit (2) outputs different noise signals to the power line channel;
the module support unit outputs meter reading instructions to the communication module (7) to be tested which is positioned at the master node (80) and the slave node (81);
the carrier signal sampling unit (3) extracts carrier signals from the master node (80) and the slave node (81) from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit (4) performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal so as to complete power line noise interference test;
s2, impedance change interference test: the module support unit respectively provides working power supplies for the communication module (7) to be tested, the measurement and control and man-machine interaction unit (5) which are positioned at the master node (80) and the slave node (81), outputs control signals for the radio frequency performance detection unit (4), and the direct current power supply unit (6) provides working power supplies for the radio frequency performance detection unit (4);
the channel parameter simulation unit (2) outputs different impedance signals in a mode of transmitting sweep frequency signals and loads the different impedance signals on a power line channel;
the module support unit outputs meter reading instructions to the communication module (7) to be tested which is positioned at the master node (80) and the slave node (81);
the carrier signal sampling unit (3) extracts carrier signals from the master node (80) and the slave node (81) from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit (4) performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal so as to complete impedance change interference test;
s3, signal attenuation test: the module support unit respectively provides working power supplies for the communication module (7) to be tested, the measurement and control and man-machine interaction unit (5) which are positioned at the master node (80) and the slave node (81), outputs control signals for the radio frequency performance detection unit (4), and the direct current power supply unit (6) provides working power supplies for the radio frequency performance detection unit (4);
the channel parameter simulation unit (2) outputs different signal attenuation values in a mode of transmitting sweep frequency signals, and the different signal attenuation values are loaded on a power line channel through the station area coupling degree adjusting unit (9);
the module support unit outputs meter reading instructions to the communication module (7) to be tested which is positioned at the master node (80) and the slave node (81);
the carrier signal sampling unit (3) extracts carrier signals from the master node (80) and the slave node (81) from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signals to obtain carrier sampling signals;
the radio frequency performance detection unit (4) performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal to complete signal attenuation test;
s4, crosstalk test: the module support unit respectively provides working power supplies for the communication module (7) to be tested, the measurement and control and man-machine interaction unit (5) which are positioned at the master node (80) and the slave node (81), outputs control signals for the radio frequency performance detection unit (4), and the direct current power supply unit (6) provides working power supplies for the radio frequency performance detection unit (4);
selecting two adjacent nodes with overlapping areas as crosstalk test table areas;
the channel parameter simulation unit (2) outputs a signal attenuation value in a mode of transmitting a sweep frequency signal, and the signal attenuation value is loaded to a power line channel of a node in a crosstalk test platform area through the platform area coupling degree adjusting unit (9);
the module supporting unit outputs a meter reading instruction to a communication module (7) to be tested, wherein the communication module is positioned at the other node of the crosstalk test platform area;
the carrier signal sampling unit (3) extracts a carrier signal from another node of the crosstalk test station area from the power line channel, and performs power frequency isolation and carrier sampling on the carrier signal to obtain a carrier sampling signal;
the radio frequency performance detection unit (4) performs spectrum analysis, waveform detection and noise signal playback on the carrier sampling signal to complete crosstalk test.
2. The power line carrier simulation running test method according to claim 1, wherein the station area coupling degree adjusting unit (9) is respectively connected with the master node (80) and the plurality of slave nodes (81) through the channel parameter simulation unit (2).
3. The power line carrier simulation run test method according to claim 1, wherein the channel parameter simulation unit (2) includes a noise generator, a variable electronic load, and a signal attenuator.
4. A power line carrier simulation run test method according to claim 3, wherein the noise output by the noise generator includes background noise, periodic noise and bursty noise.
5. The power line carrier simulation operation test method according to claim 1, wherein the carrier signal sampling unit (3) comprises a power frequency signal isolation module and a carrier signal sampling module which are sequentially connected.
6. The power line carrier simulation running test method according to claim 1, wherein the radio frequency performance detection unit (4) is specifically a standard instrument.
7. The method for power line carrier simulation run test according to claim 6, wherein the standard instrument comprises a spectrum analyzer, a digital oscilloscope and a noise signal acquisition and playback device.
8. The method for power line carrier simulation run test according to claim 7, wherein the spectrum analyzer is HP8594E, the digital oscilloscope is TDS520B, and the noise signal acquisition and playback device is WS-RPS101.
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| CN113114302B (en) * | 2021-03-08 | 2022-10-14 | 中国空间技术研究院 | Power line communication channel detection system and detection method |
| CN113630154A (en) * | 2021-07-01 | 2021-11-09 | 国网青海省电力公司营销服务中心 | Power line carrier communication test simulation system and method |
| CN114050847A (en) * | 2021-11-09 | 2022-02-15 | 国网四川省电力公司营销服务中心 | High-speed carrier-based communication performance test system and method for information acquisition system |
| CN114374409A (en) * | 2021-12-09 | 2022-04-19 | 国网江苏省电力有限公司苏州供电分公司 | Power line carrier communication experiment platform and experiment method |
| CN116667882B (en) * | 2023-07-28 | 2023-12-15 | 北京智芯微电子科技有限公司 | Physical topology simulation device and networking test system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011234161A (en) * | 2010-04-28 | 2011-11-17 | Nissan Motor Co Ltd | Power line communication apparatus |
| CN206313767U (en) * | 2016-12-09 | 2017-07-07 | 湖北华中电力科技开发有限责任公司 | A kind of power information gathers power line carrier site environment analogue means |
| CN107294563A (en) * | 2017-06-06 | 2017-10-24 | 中国电力科学研究院 | A kind of low-voltage powerline carrier communication interconnects performance test methods and system |
| CN110429991A (en) * | 2019-07-16 | 2019-11-08 | 国网江苏省电力有限公司电力科学研究院 | A kind of electrical energy data acquiring emulation test system |
| CN110518938A (en) * | 2019-08-01 | 2019-11-29 | 国网上海市电力公司 | A kind of low-voltage network power line carrier communication performance test simulation system |
-
2020
- 2020-04-29 CN CN202010356007.2A patent/CN111654311B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011234161A (en) * | 2010-04-28 | 2011-11-17 | Nissan Motor Co Ltd | Power line communication apparatus |
| CN206313767U (en) * | 2016-12-09 | 2017-07-07 | 湖北华中电力科技开发有限责任公司 | A kind of power information gathers power line carrier site environment analogue means |
| CN107294563A (en) * | 2017-06-06 | 2017-10-24 | 中国电力科学研究院 | A kind of low-voltage powerline carrier communication interconnects performance test methods and system |
| CN110429991A (en) * | 2019-07-16 | 2019-11-08 | 国网江苏省电力有限公司电力科学研究院 | A kind of electrical energy data acquiring emulation test system |
| CN110518938A (en) * | 2019-08-01 | 2019-11-29 | 国网上海市电力公司 | A kind of low-voltage network power line carrier communication performance test simulation system |
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