CN115078803A - Distributed radio parameter sampling system and method - Google Patents
Distributed radio parameter sampling system and method Download PDFInfo
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- CN115078803A CN115078803A CN202210582609.9A CN202210582609A CN115078803A CN 115078803 A CN115078803 A CN 115078803A CN 202210582609 A CN202210582609 A CN 202210582609A CN 115078803 A CN115078803 A CN 115078803A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a distributed radio parameter sampling system and a method, belonging to the technical field of radio parameter sampling; the technical problem to be solved is as follows: the improvement of the hardware structure of the distributed radio parameter sampling system is provided; the technical scheme for solving the technical problems is as follows: each wireless current clamp is communicated with the corresponding distributed inspection instrument extension through a wireless communication module, and the plurality of inspection instrument extensions are communicated with the inspection host through a networking or local area network respectively; the wireless current clamp collects current and voltage values of lines and sends the current and voltage values to the tester extensions, the test host numbers the data of the tester extensions according to the positions of distribution transformer areas, and the host server performs three-phase imbalance compensation calculation according to the current and voltage values of the lines in different transformer areas; the invention is applied to radio parameter sampling.
Description
Technical Field
The invention provides a distributed radio parameter sampling system and a distributed radio parameter sampling method, and belongs to the technical field of distributed radio parameter sampling.
Background
The traditional sampling of electric parameters such as current, voltage and the like generally adopts a current clamp and a phase voltammeter which are connected through wires to detect, the current clamp and the phase voltammeter need to be connected through a test wire, not only are a plurality of cables needed, time and energy need to be consumed in wiring, meanwhile, in the test process, the test point still needs to be limited by the length of the cable, the test point with overlong distance cannot be used for sampling current data at one time, and the collection work is repeated.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to solve the technical problems that: an improvement in the hardware architecture of a distributed radio parametric sampling system is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a distributed radio parameter sampling system comprises radio current clamps arranged in a distributed mode, tester extensions arranged in a distributed mode, a test host, a host server, a host client and a mobile client, wherein each radio current clamp is communicated with the tester extensions arranged in a corresponding distributed mode through a radio communication module;
the wireless current clamp collects current and voltage values of lines and sends the current and voltage values to the tester extensions, the test host numbers the data of the tester extensions according to the positions of power distribution transformer areas, and the host server performs three-phase imbalance compensation calculation according to the current and voltage values of the lines in different transformer areas.
The wireless current clamp comprises a shell, wherein a starting button and a jaw type opening and closing spanner are arranged on the shell;
a first current detection module, a first voltage detection module, a first analog-to-digital conversion module, a first wireless communication module and a first power module are integrated in the shell.
The extension of the tester comprises a shell, a display screen and an indicator lamp are arranged on the front face of the shell, an electric parameter calculation module, a second wireless communication module, a sub-controller, a second power module and a second analog-to-digital conversion module are integrated in the shell, a second current detection module and a second voltage detection module are further integrated in the shell, the sub-controller is respectively connected with the display screen, the indicator lamp, the second power module, the second analog-to-digital conversion module and the electric parameter calculation module through leads, and the second analog-to-digital conversion module is connected with the second current detection module and the second voltage detection module through leads.
And the shell of the tester extension is also provided with a pulse input and output interface, a voltage and current test interface and a power supply interface.
And a clock synchronization module is arranged between the wireless current clamp and the tester extension, and local clock information in a pulse or timestamp form is adopted.
A distributed radio flow sampling method, comprising the steps of:
s1: equipment installation: according to the distribution of the circuits in the transformer area, fixing wireless current clamps on a three-phase cable, arranging the extension inspection instruments in a distributed manner according to the number of users and the number of circuit measurements, arranging an inspection host, a host client and a host server on a monitoring station in a certain transformer area, and connecting corresponding circuits;
s2: starting a wireless current clamp and a tester extension, a testing host, a host client and a host server, and adjusting a synchronous clock between the wireless current clamp and the tester extension;
s3: the extension of the tester integrates the three-phase alternating current and the three-phase alternating voltage which are acquired by the current n radio current clamps and are distributed with the information of the calculated three-phase alternating power, apparent power, power frequency and phase angle into complete message information according to the line number or the erected line information and sends the complete message information to the test host;
s4: the inspection host integrates, analyzes and summarizes the data received from the m inspection instrument extensions arranged in the current transformer area according to the line erection rule, and sends the data to the host server;
s5: the host server stores the integrated original data, and then calculates the phase and amplitude of the negative sequence current and the zero sequence current at the total load side of the transformer area according to the data collected by each detector extension; and calculating the projection of each detector extension in the direction of the unbalanced component of the total load side according to the phase of the total load side and the amplitude and the phase of each detector extension detected by the detector extension, and compensating according to the projection size, the phase and the power factor.
Further comprising S6: the mobile client remotely performs wireless communication with each detector extension, and the historical data of the wireless current clamp collected by each detector extension is remotely checked or controlled on the mobile client.
The wireless current clamp and the detector extension are respectively provided with a current detection module and a voltage detection module, wherein the wireless current clamp is arranged on each branch line according to the field arrangement condition, the detector extension is arranged on the branch buses of the plurality of branch lines, and meanwhile, the detector extension is arranged on the bus at the outgoing side of the transformer in the transformer area.
Before equipment is installed, a low-voltage distribution topology of a transformer area needs to be established according to circuit arrangement of the transformer area, power consumption data and voltage-current curve data of the transformer area are obtained from a main station, low-voltage circuit loss of the transformer area is calculated, and user distribution, network side current three-phase imbalance information and reactive current data of the transformer area are analyzed.
Compared with the prior art, the invention has the beneficial effects that: the distributed radio parameter sampling system changes the method of consistently adopting the wired current clamp to collect the current signal in the industry through the wireless current clamp and the tester extension with the wireless phase volt-ampere meter function, saves the use of the test wire, ensures that the distance of the current test point is not limited by the length of the cable, ensures that the operation of a worker is simpler and more convenient, and simultaneously avoids potential safety hazards caused by winding and knotting of the test wire and damage of the insulation layer of the test wire. Meanwhile, by arranging the wireless current clamp and the wireless tester extension in the transformer area, the real-time measurement of electric parameters such as current and voltage on a wireless circuit can be realized, and the treatment of three-phase unbalance of the transformer area can be realized.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a wireless current clamp according to the present invention;
fig. 3 is a schematic structural diagram of the extension of the tester of the present invention.
Detailed Description
As shown in fig. 1 to 3, the distributed radio parameter sampling system of the present invention includes radio current clamps arranged in a distributed manner, tester extensions arranged in a distributed manner, a test host, a host server, a host client, and a mobile client, where each radio current clamp communicates with a tester extension arranged in a distributed manner through a wireless communication module, a plurality of tester extensions communicate with the test host through a network or a local area network, the test host is connected with the host server and the host client through wires, the mobile client communicates with the tester extensions and the test host through the wireless communication module, and the mobile client can switch numbers of the tester extensions to view current and voltage detection values at different detection points;
the wireless current clamp collects current and voltage values of lines and sends the current and voltage values to the tester extensions, the test host numbers the data of the tester extensions according to the positions of power distribution transformer areas, and the host server performs three-phase imbalance compensation calculation according to the current and voltage values of the lines in different transformer areas.
The wireless current clamp comprises a shell, wherein a starting button and a jaw type opening and closing spanner are arranged on the shell;
a first current detection module, a first voltage detection module, a first analog-to-digital conversion module, a first wireless communication module and a first power module are integrated in the shell.
The extension of the tester comprises a shell, a display screen and an indicator lamp are arranged on the front face of the shell, an electric parameter calculation module, a second wireless communication module, a sub-controller, a second power module and a second analog-to-digital conversion module are integrated in the shell, a second current detection module and a second voltage detection module are further integrated in the shell, the sub-controller is respectively connected with the display screen, the indicator lamp, the second power module, the second analog-to-digital conversion module and the electric parameter calculation module through leads, and the second analog-to-digital conversion module is connected with the second current detection module and the second voltage detection module through leads.
And the shell of the tester extension is also provided with a pulse input and output interface, a voltage and current test interface and a power supply interface.
And a clock synchronization module is arranged between the wireless current clamp and the tester extension, and local clock information in a pulse or timestamp form is adopted.
A distributed radio flow sampling method, comprising the steps of:
s1: equipment installation: according to the distribution of the circuits in the transformer area, fixing wireless current clamps on a three-phase cable, arranging the extension inspection instruments in a distributed manner according to the number of users and the number of circuit measurements, arranging an inspection host, a host client and a host server on a monitoring station in a certain transformer area, and connecting corresponding circuits;
s2: starting a wireless current clamp and a tester extension, a testing host, a host client and a host server, and adjusting a synchronous clock between the wireless current clamp and the tester extension;
s3: the extension of the tester integrates the three-phase alternating current and the three-phase alternating voltage which are acquired by the current n radio current clamps and are distributed with the information of the calculated three-phase alternating power, apparent power, power frequency and phase angle into complete message information according to the line number or the erected line information and sends the complete message information to the test host;
s4: the inspection host integrates, analyzes and summarizes the data received from the m inspection instrument extensions arranged in the current transformer area according to the line erection rule, and sends the data to the host server;
s5: the host server stores the integrated original data, and then calculates the phase and amplitude of the negative sequence current and the zero sequence current at the total load side of the transformer area according to the data collected by each detector extension; and calculating the projection of each detector extension in the direction of the unbalanced component on the total load side according to the phase on the total load side and the amplitude and the phase detected by each detector extension, and compensating according to the projection size, the phase and the power factor.
Further comprising S6: the mobile client remotely performs wireless communication with each detector extension, and the historical data of the wireless current clamp collected by each detector extension is remotely checked or controlled on the mobile client.
The wireless current clamp and the detector extension are respectively provided with a current detection module and a voltage detection module, wherein the wireless current clamp is arranged on each branch line according to the field arrangement condition, the detector extension is arranged on the branch buses of the plurality of branch lines, and meanwhile, the detector extension is arranged on the bus at the outgoing side of the transformer in the transformer area.
Before equipment is installed, a platform area low-voltage power distribution topology needs to be established according to platform area line arrangement, power consumption data and voltage and current curve data of a platform area are obtained from a main station, low-voltage line loss of the platform area is calculated, and user distribution, network side current three-phase imbalance information and reactive current data of the platform area are analyzed.
The invention provides a sampling system of radio parameters, which aims to solve the problems of the existing wired phase voltammeter, mainly comprehensively considers the layout among a voltage sensor, a current sensor and a computing device of the phase voltammeter from the aspects of the number of wireless modules, the data transmission quantity, the power consumption and the like.
The invention uses a plurality of wireless current clamps and a detector extension as a basic unit to sample the line electrical parameters, the detector extension and the wireless current clamps carry out signal sampling information synchronization through a wireless synchronization module, data wireless transmission is carried out through a wireless transmission module, the detector extension measures and processes the analog voltage and the current signals on the branch buses, the wireless current clamps measure and process the analog voltage and the current signals on each branch line and transmit the analog voltage and the current signals to the wireless transmission module of the detector extension through the wireless transmission module, and the electrical parameter calculation module of the detector extension calculates various electrical parameter information on each branch line and each branch bus on the basic line unit according to the current and voltage signals tested by the local machine and the voltage and current signals of the wireless current clamps received from the wireless transmission module.
The extension of the detector integrates the voltage signal and current signal acquisition modules, and the voltage signal and current acquisition and transmission on a part of branch buses of the transformer area are completed in the device, so that a test line is omitted, the delay and loss caused by signal transmission are further reduced, the wireless transmission quantity of the whole equipment is reduced by 50%, the power consumption is reduced, the volume is reduced, the layout of the extension of the detector is simpler, the complexity is reduced, the communication among the modules in the device is simpler and more efficient, and the cost of the device is reduced.
When the wireless synchronization modules of the extension and wireless current clamp of the detector adopt pulse or timestamp local clock information, the wireless synchronization modules have the characteristics that the wireless transmission jitter (jitter) of the information is within 10us and the time delay is small, and the error of the clock information received and restored at one end and the transmitted local clock information on time is not more than 20us, so that high-precision electric parameter information is obtained.
The main indexes of the invention for detecting the electrical parameters are as follows:
1) alternating-current voltage: the measurement range is 10-600V, the accuracy is 1, and the resolution is 0.01V.
2) Alternating current: the measurement range is 0.01-5A (clamp meter input), the accuracy is 1, and the resolution is 0.0001A.
3) Alternating current power: the measurement range is 0.1-3 kW (clamp meter input), the accuracy is 1, and the resolution is 0.0001 kW.
4) Apparent frequency: the measurement range is 0.1-3 kVA (clamp meter input), the accuracy is 1, and the resolution is 0.0001 kVA.
5) Power frequency: the measurement range is 45-55 Hz, the accuracy is 0.5Hz, and the resolution is 0.001 Hz.
6) Phase angle: the measuring range is 0-360 degrees, the accuracy is 0.5 degrees, and the resolution is 0.1 degrees.
The functional indexes of the tester extension of the invention are as follows:
1) wireless current and voltage sampling.
2) Full screen touch manipulation.
3) And measuring electric parameters such as alternating voltage, alternating current, active power, reactive power, apparent power, frequency, power factor, phase and the like in real time.
4) And testing the dynamic wiring phasor diagram of the tested alternating voltage and alternating current.
5) And simultaneously measuring the phase and amplitude relation between the three-way voltage and the three-way current.
6) The device has the function of measuring the on-off of the circuit.
The tester extension of the present invention comprises the functions as shown in table 1 below:
table 1 tester extension functions
The wireless current clamp and the wireless detector extension set are used as basic units to be arranged on a branch line of a power distribution area, a detection host is arranged at the same time, data of a plurality of basic units are collected and sent to the detection host, three-phase imbalance on the power distribution area line is calculated through a host server, and treatment measures are given, so that data acquisition of wireless parameters can be realized, and the three-phase imbalance of the power distribution area can be treated according to the acquired electrical parameters.
The invention also realizes the data of the on-site check meter managed by the microcomputer by matching the mobile terminal with the extension of the check meter, thereby forming a set of complete on-site check management system. The tester extension can be directly connected to carry out the operations of parameter setting, error measurement, data storage, equipment timing, shutdown and the like.
It should be noted that, regarding the specific structure of the present invention, the connection relationship between the modules adopted in the present invention is determined and can be realized, except for the specific description in the embodiment, the specific connection relationship can bring the corresponding technical effect, and the technical problem proposed by the present invention is solved on the premise of not depending on the execution of the corresponding software program.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A distributed radio parametric sampling system, comprising: the wireless current clamp system comprises wireless current clamps arranged in a distributed mode, tester extensions arranged in a distributed mode, a test host, a host server, a host client and a mobile client, wherein each wireless current clamp is communicated with the tester extensions arranged in a corresponding distributed mode through a wireless communication module;
the wireless current clamp collects current and voltage values of lines and sends the current and voltage values to the tester extensions, the test host numbers the data of the tester extensions according to the positions of power distribution transformer areas, and the host server performs three-phase imbalance compensation calculation according to the current and voltage values of the lines in different transformer areas.
2. A distributed radio parametric sampling system according to claim 1, wherein: the wireless current clamp comprises a shell, wherein a starting button and a jaw type opening and closing spanner are arranged on the shell;
a first current detection module, a first voltage detection module, a first analog-to-digital conversion module, a first wireless communication module and a first power supply module are integrated in the shell.
3. A distributed radio parametric sampling system according to claim 1, wherein: the extension of the tester comprises a shell, wherein a display screen and an indicator light are arranged on the front surface of the shell, an electric parameter calculation module, a second wireless communication module, a sub-controller, a second power module and a second analog-to-digital conversion module are integrated in the shell, a second current detection module and a second voltage detection module are further integrated in the shell, the sub-controller is respectively connected with the display screen, the indicator light, the second power module, the second analog-to-digital conversion module and the electric parameter calculation module through wires, and the second analog-to-digital conversion module is connected with the second current detection module and the second voltage detection module through wires.
4. A distributed radio parametric sampling system according to claim 3, wherein: and the shell of the tester extension is also provided with a pulse input and output interface, a voltage and current test interface and a power supply interface.
5. A distributed radio parametric sampling system according to claim 1, wherein: and a clock synchronization module is arranged between the wireless current clamp and the tester extension, and local clock information in a pulse or timestamp form is adopted.
6. A distributed radio flow sampling method employing a distributed radio parametric sampling system as defined in any of claims 1-5, wherein: the method comprises the following steps:
s1: equipment installation: according to the distribution of the circuits in the transformer area, fixing wireless current clamps on a three-phase cable, arranging the extension inspection instruments in a distributed manner according to the number of users and the number of circuit measurements, arranging an inspection host, a host client and a host server on a monitoring station in a certain transformer area, and connecting corresponding circuits;
s2: starting a wireless current clamp and a tester extension, a testing host, a host client and a host server, and adjusting a synchronous clock between the wireless current clamp and the tester extension;
s3: the extension of the tester integrates the three-phase alternating current and the three-phase alternating voltage which are acquired by the current n radio current clamps and are distributed with the information of the calculated three-phase alternating power, apparent power, power frequency and phase angle into complete message information according to the line number or the erected line information and sends the complete message information to the test host;
s4: the inspection host integrates, analyzes and summarizes the data received from the m inspection instrument extensions arranged in the current transformer area according to the line erection rule, and sends the data to the host server;
s5: the host server stores the integrated original data, and then calculates the phases and amplitudes of the negative sequence current and the zero sequence current of the total load side of the transformer area according to the data collected by each detector extension; and calculating the projection of each detector extension in the direction of the unbalanced component on the total load side according to the phase on the total load side and the amplitude and the phase detected by each detector extension, and compensating according to the projection size, the phase and the power factor.
7. A distributed radio stream sampling method as claimed in claim 6, wherein: further comprising S6: the mobile client remotely performs wireless communication with each detector extension, and the historical data of the wireless current clamp collected by each detector extension is remotely checked or controlled on the mobile client.
8. A distributed radio flow sampling method according to claim 7, characterized by: the wireless current clamp and the detector extension are respectively provided with a current detection module and a voltage detection module, wherein the wireless current clamp is arranged on each branch line according to the field arrangement condition, the detector extension is arranged on the branch buses of the plurality of branch lines, and meanwhile, the detector extension is arranged on the bus at the outgoing side of the transformer in the transformer area.
9. A distributed radio flow sampling method according to claim 7, characterized by: before equipment is installed, a low-voltage distribution topology of a transformer area needs to be established according to circuit arrangement of the transformer area, power consumption data and voltage-current curve data of the transformer area are obtained from a main station, low-voltage circuit loss of the transformer area is calculated, and user distribution, network side current three-phase imbalance information and reactive current data of the transformer area are analyzed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210582609.9A CN115078803A (en) | 2022-05-26 | 2022-05-26 | Distributed radio parameter sampling system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317170A (en) * | 2023-05-18 | 2023-06-23 | 北京智芯微电子科技有限公司 | Power supply system, power consumption information measuring method and device thereof and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317170A (en) * | 2023-05-18 | 2023-06-23 | 北京智芯微电子科技有限公司 | Power supply system, power consumption information measuring method and device thereof and storage medium |
| CN116317170B (en) * | 2023-05-18 | 2023-08-18 | 北京智芯微电子科技有限公司 | Power supply system, power consumption information measuring method and device thereof and storage medium |
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