CN213462349U - Test system for networking performance of power consumption information acquisition equipment - Google Patents
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- CN213462349U CN213462349U CN202023189734.9U CN202023189734U CN213462349U CN 213462349 U CN213462349 U CN 213462349U CN 202023189734 U CN202023189734 U CN 202023189734U CN 213462349 U CN213462349 U CN 213462349U
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Abstract
The application discloses test system of power consumption information acquisition equipment networking performance includes: n detection platforms, wherein N is more than or equal to 2; the device comprises a noise signal generating device, a signal channel selecting device and a frequency spectrograph; each detection platform is sequentially connected and is provided with a collector mounting position, an ammeter mounting position and an attenuator; the first detection table is also provided with a concentrator installation position; the attenuator is used for performing attenuation processing on the signals; the noise signal generating device is connected with each detection platform and used for generating and outputting noise signals; the signal channel selection device is connected with each detection station and the frequency spectrograph and is used for gating the detection stations so as to access the gated signals in the detection stations to the frequency spectrograph. The test system can simulate the networking of the distribution room to carry out networking performance test.
Description
Technical Field
The application relates to the technical field of electric power, in particular to a test system for networking performance of power consumption information acquisition equipment.
Background
The broadband carrier communication technology is gradually widely applied, and the electricity consumption information acquisition system enables equipment such as a concentrator, an acquisition device, a single-phase intelligent meter and a three-phase intelligent meter to form a large-scale networking network through broadband carriers. The various devices are individually detected before being accessed to the network, and after networking, because the matching between the devices is not enough, faults which affect the communication performance, such as device access failure or unreliable networking, can occur during field operation.
At present, the existing simulation test system mainly aims at the test of a carrier communication module monomer, cannot completely simulate the networking equipment of the entity equipment in a transformer area, and cannot well test the matching of the networking system; or the test cannot be carried out aiming at the broadband carrier, the influence of signal space radiation on communication stability in the module communication process cannot be eliminated, and the test of the relay forwarding function caused by field impedance, noise interference and the like cannot be simulated.
In view of the above, how to solve the above technical defects has become an urgent technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is to provide a test system of power consumption information acquisition equipment network deployment performance, can simulate the district network deployment and carry out network deployment performance test, can more fit the reality and evaluate the equipment quality, effectively reduce because of the matching nature problem causes the uncontrollable problem of site communication between the equipment, reduce site quality maintenance cost, have important meaning to reliability and the stability that improves power consumption information acquisition system carrier communication.
In order to solve the above technical problem, the present application provides a test system for networking performance of power consumption information acquisition equipment, including:
n detection platforms, wherein N is more than or equal to 2; the device comprises a noise signal generating device, a signal channel selecting device and a frequency spectrograph; each detection platform is sequentially connected and is provided with a collector mounting position, an ammeter mounting position and an attenuator; the first detection table is also provided with a concentrator installation position;
the attenuator is used for performing attenuation processing on the signals;
the noise signal generating device is connected with each detection platform and used for generating and outputting noise signals;
the signal channel selection device is connected with each detection station and the frequency spectrograph and is used for gating the detection stations so as to access the gated signals in the detection stations to the frequency spectrograph.
Optionally, the attenuator in each detection station is connected to a signal synthesizing and averaging device in the detection station; in two adjacent detection stations, the signal synthesis and averaging device in the former detection station is connected with the attenuator in the latter detection station;
the signal synthesizing and equally dividing device is also connected with a coupling and isolating device in the detection platform; the coupling and isolating device is also connected with a collector in the collector mounting position in the detection table and an ammeter in the ammeter mounting position;
the noise signal generating device is connected with a signal averaging device in a first detection station, and the signal averaging device is connected with the signal synthesizing and averaging devices in the detection stations;
the signal channel selection device is connected with the frequency spectrograph and the signal synthesis and averaging device in each detection station.
Optionally, the first detection table is provided with a shielding box, the concentrator installation position is arranged in the shielding box, and a coupling and isolating device is arranged in the shielding box.
Optionally, the noise signal generating device, the signal channel switching device and the spectrometer are disposed in a first of the detection stations.
Optionally, each detection platform is provided with a plurality of collector installation positions and a plurality of ammeter installation positions, and the ammeter installation positions include a three-phase ammeter installation position and a single-phase ammeter installation position.
Optionally, the method further includes:
detecting and controlling an industrial personal computer and a man-machine interaction operation platform; the detection control industrial personal computer and the man-machine interaction operation platform are connected with the attenuator, the noise signal generating device, the signal channel switching equipment and the frequency spectrograph in each detection platform.
Optionally, the detection control industrial personal computer and the man-machine interaction platform are both arranged in the first detection platform.
Optionally, each of the detection stations is provided with a power supply.
Optionally, the power supply is a programmable power supply.
The application provides a test system of power consumption information acquisition equipment networking performance includes: n detection platforms, wherein N is more than or equal to 2; the device comprises a noise signal generating device, a signal channel selecting device and a frequency spectrograph; each detection platform is sequentially connected and is provided with a collector mounting position, an ammeter mounting position and an attenuator; the first detection table is also provided with a concentrator installation position; the attenuator is used for performing attenuation processing on the signals; the noise signal generating device is connected with each detection platform and used for generating and outputting noise signals; the signal channel selection device is connected with each detection station and the frequency spectrograph and is used for gating the detection stations so as to access the gated signals in the detection stations to the frequency spectrograph.
It can be seen that the test system of power consumption information acquisition equipment network deployment performance that this application provided can install collector, ammeter and concentrator in detecting the platform, and each detects the platform and concatenates and to form multistage network deployment, utilizes the attenuator can simulate the channel attenuation in the platform district, utilizes noise signal generating device can simulate the power consumption equipment noise in the platform district to can simulate the platform district in the laboratory through this test system, carry out network deployment performance test.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a system for testing networking performance of power consumption information acquisition equipment according to an embodiment of the present application;
fig. 2 is a schematic diagram of another testing system for networking performance of power consumption information acquisition equipment according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a coupling and isolation circuit according to an embodiment of the present application;
fig. 4 is a schematic diagram of a collector and an electric meter grouping provided in an embodiment of the present application.
Detailed Description
Can emulation platform district network deployment carry out network deployment capability test, can more fit the reality and evaluate equipment quality, effectively reduce because of the uncontrollable problem of field communication is caused to the matching nature problem between the equipment, reduce field quality maintenance cost, have important meaning to improving power consumption information acquisition system carrier communication's reliability and stability.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of a system for testing networking performance of power consumption information collecting equipment according to an embodiment of the present application, and referring to fig. 1, the system includes:
an attenuator 103 for performing an attenuation process on the signal;
the noise signal generating device 20 is connected with each detection station 10 and used for generating and outputting noise signals;
the signal path selection device 30 is connected to each test station 10 and the spectrometer 40, and is configured to gate the test station 10, so as to access the gated signal in the test station 10 to the spectrometer 40.
Specifically, the station area generally consists of a concentrator, a certain number of collectors, a single-phase electric meter and a three-phase electric meter. Signal attenuation occurs in the area under the influence of transformers, lines, etc. In addition, the electric equipment generates noise, the generated various noises affect the communication quality, and the multi-stage relay networking between the equipment is triggered under the condition of poor communication quality. Therefore, in order to simulate the transformer area and truly reflect the field application scene of the transformer area, the test system provided by the application is provided with N detection platforms 10, wherein N is more than or equal to 2. The specific number of the detection stations 10 can be set according to the application requirements, for example, 15 detection stations 10 can be set.
Each test station 10 is provided with a collector mounting location 101, an electric meter mounting location 102 and an attenuator 103, and a concentrator mounting location 104 is further provided on the first test station 10. Thus, the first inspection station 10 can be equipped with the concentrator, collector and electricity meter to be inspected. Other test stations 10 can be equipped with collectors and meters to be tested. The detection stations 10 are connected in series to form a multi-stage network.
To simulate the channel attenuation in the station area, each test station 10 is provided with an attenuator 103. The attenuator 103 in the first test station 10 may attenuate the signal from the concentrator, the attenuator 103 in the second test station 10 may attenuate the signal from the first test station 10, and so on, and the attenuator 103 in the nth test station 10 may attenuate the signal from the (N-1) th test station 10. By setting the attenuation value of the attenuator 103, a plurality of relay forwarding schemes can be triggered. The attenuator 103 can be a program-controlled attenuator, the type of which can be GKTS2, and the settable range is 0-127 dB.
In order to simulate the noise of the electric equipment in the platform area, the test system is also provided with a noise signal generating device 20. The noise signal generator 20 is connected to each test stage 10, and can generate and output a noise signal to each test stage 10. The model of the noise signal generator 20 may be DG952, which may output colored background noise, narrow-band noise, periodic impulse noise, transient impulse noise, and the like.
The signal path selection device 30 is connected to each test station 10 and the spectrometer 40, and is configured to gate the test station requiring signal analysis, so as to connect the gated signal in the test station 10 to the spectrometer 40. After the signal is accessed to the spectrometer 40, the spectrometer 40 analyzes the signal, including frequency bandwidth, total transmission power, spectral density, signal-to-noise ratio, etc., to obtain a signal spectral curve for analysis by a tester. The signal path selecting device 30 may use the chip STM8S003F3 as a controller. The model of the spectrometer 40 may be DSA 815.
As a specific embodiment, the noise signal generating device 20, the signal channel switching device, and the spectrometer 40 are disposed in the first testing station 10.
In addition, referring to fig. 2, as a specific embodiment, the attenuator 103 in each detection station 10 is connected to the signal synthesizing and averaging device in the detection station 10; in two adjacent detection stations 10, the signal synthesis and averaging device in the previous detection station 10 is connected with the attenuator 103 in the next detection station 10;
the signal synthesizing and equally dividing device is also connected with a coupling and isolating device in the detection platform 10; the coupling and isolating device is also connected with a collector in the collector mounting position 101 in the detection table 10 and an electric meter in the electric meter mounting position 102;
the noise signal generating device 20 is connected with a signal averaging device in the first detection station 10, and the signal averaging device is connected with the signal synthesizing and averaging devices in the detection stations 10;
the signal channel selection device 30 is connected with the frequency spectrograph 40 and the signal synthesizing and averaging device in each detection station 10.
Specifically, the first detecting station 10 is provided with a signal equalizing device having a signal equalizing function, a signal synthesizing and equalizing device having a signal synthesizing and equalizing function, and a coupling and isolating device, in addition to the concentrator mounting position 104, the collector mounting position 101, the electricity meter mounting position 102, and the attenuator 103. Each of the other detection stations 10 is provided with a signal synthesizing and averaging device and a coupling and isolating device in addition to the collector mounting position 101, the electricity meter mounting position 102 and the attenuator 103.
The signal synthesizing and averaging device is used for mixing the noise signal output by the noise generating device and the weak current carrier signal and outputting the mixed signal, and can also be used for inverse averaging. The signal synthesizing and dividing device is a branch node for signal transmission, can synthesize multiple input signals or divide the synthesized signal into multiple outputs, and the input and output characteristics of each branch port are identical. The insertion loss is less than 12dB, the working frequency DC-1 GHz, and the current is shunted through a resistance component.
The coupling and isolating device is in two-way communication, plays a role in signal coupling and decoupling, isolates a signal end from a power supply end, prevents a power grid signal from entering a test system, and prevents the test system signal from interfering with the power supply. Referring to the circuit shown in fig. 3: and the L _ in and the N _ in are power supply inputs, the L _ out and the N _ out are power supply isolated outputs, the power supply isolated outputs supply power for the detected concentrator, collector and electric meter, and the power carrier signal is input/output from the interfaces and is separated into a carrier signal and a 220V alternating current signal through C5, C7 and L6. For the specific principles of coupling and isolation, detailed description is omitted here, and reference may be made to the prior art.
Therefore, for the first detection station 10, the carrier signal modulated on the strong current 220V of the concentrator sending frame is decoupled through the coupling and isolation device, the weak current carrier signal is extracted, the attenuator 103 is used for carrying out signal attenuation on the weak current carrier signal, the signal synthesis and averaging device is used for mixing the attenuated weak current carrier signal with the noise signal output by the noise generator, the mixed weak current carrier signal is coupled to the strong current signal and output to the collector and the ammeter, and the communication response information frame is reversely returned to complete carrier communication.
For the other detecting stations 10, after the signal from the signal synthesizing and averaging device in the previous detecting station 10 is attenuated by the attenuator 103 in the detecting station 10, the attenuated weak current carrier signal is mixed with the noise signal output by the noise generator by the signal synthesizing and averaging device in the detecting station 10, and the mixed weak current carrier signal is coupled to the strong current signal by the coupling and isolating device in the detecting station 10 and output to the collector and the ammeter installed in the detecting station 10.
That is, the signal flow direction of the whole test system is that the concentrator initiates a meter reading command, the signal is transmitted through the power line carrier, the signal is decoupled into a weak current carrier signal through the processing of the coupling/isolation module, the weak current carrier signal is attenuated by the attenuator 103 and then mixed with the noise signal sent by the noise signal generating device 20 through the signal synthesizing and dividing device, the mixed signal is coupled to the 220V alternating current voltage signal through the coupling and isolation device and is transmitted to the carrier module of the collector and the ammeter to be tested through the power line, and the collector and the ammeter reversely return after receiving the meter reading command. If the attenuation is multi-stage attenuation, the mixed signal is further attenuated by times, mixed with the noise emitted by the noise signal generating device 20, and coupled to the 220V alternating voltage signal through the coupling and isolating device.
Further, on the basis of the above embodiment, in order to shield the spatial radiation of the broadband carrier signal and ensure the stable detection effect of the test system and the effective test of the attenuation resistance, as a preferred embodiment, the first detection station 10 is provided with a shielding box, the concentrator installation site 104 is arranged in the shielding box, and the shielding box is provided with a coupling and isolating device.
Further, in addition to the above-mentioned embodiments, as a preferred implementation manner, each inspection station 10 is provided with a plurality of collector installation sites 101 and a plurality of electric meter installation sites 102, and the electric meter installation sites 102 include a three-phase electric meter installation site 102 and a single-phase electric meter installation site 102.
Specifically, by providing a plurality of collector mounting sites 101 and a plurality of meter mounting sites 102, the inspection station 10 can group the inspected apparatuses. For example, referring to fig. 4, the detected devices in the detection station 10 are divided into 3 groups, each group includes 2 i-type collectors or i-type collectors, and at least 1 three-phase electric meter and 1 single-phase electric meter are connected below each collector. Therefore, the power-on and power-off of the detected equipment can be flexibly controlled in a grouping manner, and the relay routing, the route repair and the network access test of the free node are carried out.
Further, on the basis of the above-mentioned embodiment, as a preferred implementation, the method further includes:
detecting and controlling an industrial personal computer and a man-machine interaction operation platform; the detection control industrial personal computer and the man-machine interaction operation platform are connected with an attenuator 103, a noise signal generating device 20, signal channel switching equipment and a frequency spectrograph 40 in each detection platform 10.
Therefore, the attenuation value of the attenuator 103 can be set and monitored by detecting and controlling the industrial personal computer and the man-machine interaction operation platform, the noise signal generating device 20 is controlled to output different types of noise, the frequency range, the amplitude and the like of the noise are set, and the signal of the inspection bench to be tested is selected by the control signal selecting device.
Wherein, the detection control industrial personal computer and the man-machine interaction platform can be arranged in the first detection platform 10.
Further, as shown in fig. 2, each of the inspection stages 10 is provided with a power supply. That is, each test station 10 is provided with an independent power supply. The multi-stage non-common source detection table 10 is connected through a radio frequency signal wire. The power supply can be a program control power supply, and each program control power supply can also be connected with a detection control industrial personal computer and a human-computer interaction operation platform and is controlled by the detection control industrial personal computer and the human-computer interaction operation platform.
In summary, the test system for networking performance of power consumption information acquisition equipment provided by the application comprises: n detection platforms, wherein N is more than or equal to 2; the device comprises a noise signal generating device, a signal channel selecting device and a frequency spectrograph; each detection platform is sequentially connected and is provided with a collector mounting position, an ammeter mounting position and an attenuator; the first detection table is also provided with a concentrator installation position; the attenuator is used for performing attenuation processing on the signals; the noise signal generating device is connected with each detection platform and used for generating and outputting noise signals; the signal channel selection device is connected with each detection station and the frequency spectrograph and is used for gating the detection stations so as to access the gated signals in the detection stations to the frequency spectrograph. This test system, but the mountable collector, ammeter and concentrator in detecting the platform, each detects the platform and concatenates and to form multistage network deployment, utilizes the attenuator can simulate the channel attenuation in the platform district, utilizes noise signal generating device can simulate the consumer noise in the platform district to can simulate the platform district in the laboratory through this test system, carry out network deployment capability test, include testing the monomer equipment reliability and the network deployment matching nature of network deployment.
The test system provided by the application can be used for testing the networking performance of the power utilization information acquisition equipment. Of course, the tester can set up the test as required for the specific test item and test procedure. For example, to test the route repair capability, the corresponding procedure may be as follows:
the first detection platform is connected with the second detection platform through a radio frequency line, and the function test of the second detection platform is stopped;
the first detection platform and the second detection platform are electrified;
and controlling all the collectors and the electric meters in the first detection platform to be powered off, and setting the attenuation value of the attenuator in the first detection platform to be 10db and the attenuation value of the attenuator in the second detection platform to be more than 30db so as to prevent the second detection platform from normally communicating.
And electrifying the 1 st group of collector and the ammeter in the first detection table, so that the detected equipment in the second detection table is relayed with the ammeter through the 1 st group of collector in the first detection table, and the ammeter data in the second detection table can be copied and read.
And switching to electrifying the 2 nd group of collectors and the electric meter in the first detection platform, so that the detected equipment in the second detection platform is relayed with the electric meter through the 2 nd group of collectors in the first detection platform. And starting timing until the data of the detected equipment in the second detection platform is read successfully, and recording the elapsed time, wherein the time is the route repair time. Therefore, the relay route repair capability of the routing module can be verified, and the route repair cycle and the repair capability thereof can be tested.
Because the situation is complicated and cannot be illustrated by a list, those skilled in the art can appreciate that there can be many examples in combination with the actual situation under the basic principle of the embodiments provided in the present application and that it is within the scope of the present application without sufficient inventive effort.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The test system for networking performance of the power utilization information acquisition equipment provided by the application is introduced in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (9)
1. The utility model provides a test system of power consumption information acquisition equipment networking performance which characterized in that includes:
n detection platforms, wherein N is more than or equal to 2; the device comprises a noise signal generating device, a signal channel selecting device and a frequency spectrograph; each detection platform is sequentially connected and is provided with a collector mounting position, an ammeter mounting position and an attenuator; the first detection table is also provided with a concentrator installation position;
the attenuator is used for performing attenuation processing on the signals;
the noise signal generating device is connected with each detection platform and used for generating and outputting noise signals;
the signal channel selection device is connected with each detection station and the frequency spectrograph and is used for gating the detection stations so as to access the gated signals in the detection stations to the frequency spectrograph.
2. The test system according to claim 1, wherein said attenuator in each of said test stations is connected to a signal combining and averaging device in the test station in which it is located; in two adjacent detection stations, the signal synthesis and averaging device in the former detection station is connected with the attenuator in the latter detection station;
the signal synthesizing and equally dividing device is also connected with a coupling and isolating device in the detection platform; the coupling and isolating device is also connected with a collector in the collector mounting position in the detection table and an ammeter in the ammeter mounting position;
the noise signal generating device is connected with a signal averaging device in a first detection station, and the signal averaging device is connected with the signal synthesizing and averaging devices in the detection stations;
the signal channel selection device is connected with the frequency spectrograph and the signal synthesis and averaging device in each detection station.
3. The test system according to claim 2, wherein a first of the test stations is provided with a shielded box in which the concentrator mounting sites are provided and in which coupling and isolation means are provided.
4. A test system according to claim 3, wherein the noise signal generating means, the signal path switching apparatus and the spectrometer are provided in a first of the test stations.
5. The test system according to claim 4, wherein a plurality of the collector mounting positions and a plurality of the electric meter mounting positions are arranged in each test platform, and the electric meter mounting positions comprise three-phase electric meter mounting positions and single-phase electric meter mounting positions.
6. The test system of claim 5, further comprising:
detecting and controlling an industrial personal computer and a man-machine interaction operation platform; the detection control industrial personal computer and the man-machine interaction operation platform are connected with the attenuator, the noise signal generating device, the signal channel switching equipment and the frequency spectrograph in each detection platform.
7. The test system according to claim 6, wherein the detection control industrial personal computer and the human-computer interaction platform are both arranged in the first detection platform.
8. The test system of claim 7, wherein each of the test stations is provided with a power source.
9. The test system of claim 8, wherein the power source is a programmed power source.
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