CN117129791B - Distribution network side power quality monitoring device - Google Patents
Distribution network side power quality monitoring device Download PDFInfo
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- CN117129791B CN117129791B CN202311402744.1A CN202311402744A CN117129791B CN 117129791 B CN117129791 B CN 117129791B CN 202311402744 A CN202311402744 A CN 202311402744A CN 117129791 B CN117129791 B CN 117129791B
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- 238000013441 quality evaluation Methods 0.000 description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/25—Integrating or interfacing systems involving database management systems
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Data Mining & Analysis (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Computing Systems (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a distribution network side power quality monitoring device applied to the field of measuring electric variables, which comprises a power quality processing unit carried in a monitoring device body, wherein the distribution transformer data acquisition unit, an initial parameter acquisition unit, a load data acquisition unit and a load acquisition unit are adopted to assist the monitoring device body to acquire various data of a distribution transformer and a load, and then the distribution transformer data compensation unit and the load data compensation unit are used for analyzing and processing the data of the monitored distribution network side, so that the monitoring device body can be effectively promoted to perform data compensation and calibration on the monitored data of the distribution network side, the monitoring accuracy of the monitoring device body is improved, the accuracy and the reliability of an evaluation result of the monitoring device body are also effectively improved, the self-adaptation performance of the monitoring device body is effectively improved, the application of the monitoring device body on different distribution network sides is promoted, and the application range of the monitoring device body is enlarged.
Description
Technical Field
The invention relates to a monitoring device, in particular to a distribution network side electric energy quality monitoring device applied to the field of electric variable measurement.
Background
The distribution network side electric energy refers to a process of adjusting and transmitting electric energy through a distribution transformer in a process of supplying power to users from a main transformer in an electric power system. In the aspect of power distribution network, a power grid company aims at improving the power supply quality and reliability of a power grid, promotes the construction of an intelligent distribution network side, improves the energy utilization efficiency, and reduces the energy consumption and loss.
In order to ensure the quality of the power distribution network, a power grid public will set a power maintenance platform and a power quality monitoring platform for maintaining and monitoring the power grid. The electric energy quality monitoring device mainly monitors electric energy quality data including voltage, current, frequency, harmonic wave, fluctuation, flicker, power and the like, and measures and analyzes the influence of various electric equipment on electric energy quality of a public power grid under different running states.
When the power quality monitoring device is installed and used, the monitoring precision of the power quality monitoring device can be directly influenced due to different performances of distribution network side distribution transformers at the installation positions and the influence of the change and unbalance factors of the distribution network side loads, but the existing distribution network side power quality monitoring device cannot effectively compensate and calibrate the data, so that the precision of the power quality evaluation is reduced, and the reliability is reduced.
Disclosure of Invention
Aiming at the prior art, the invention aims to solve the technical problem of how to further improve the monitoring precision of the power quality monitoring device at the distribution network side.
In order to solve the problems, the invention provides a distribution network side power quality monitoring device which comprises a power quality processing unit carried in a monitoring device body, wherein the input end of the power quality processing unit is connected with a distribution network side data acquisition unit, a load data acquisition unit, a distribution transformer data acquisition unit, an initial parameter acquisition unit, a load acquisition unit, a distribution transformer data compensation unit and a load data compensation unit;
the input end of the distribution transformer data compensation unit is respectively connected with the distribution transformer data acquisition unit and the initial parameter acquisition unit in a signal manner, and the input end of the load data compensation unit is respectively connected with the load data acquisition unit and the load capacity acquisition unit in a signal manner;
the output end of the power quality processing unit is connected with an evaluation data output unit and an alarm unit;
the input end of the distribution network side data acquisition unit is in signal connection with the power output end of the distribution network side, the input end of the load data acquisition unit is in signal connection with the load power consumption statistical end, the input end of the distribution transformer data acquisition unit is in signal connection with a distribution transformer arranged on the distribution network side, the input end of the initial parameter acquisition unit is in signal connection with a maintenance platform on the distribution network side, and the input end of the load amount acquisition unit is in signal connection with a load connection end arranged on the distribution network side;
the output end of the evaluation data output unit is respectively connected with a display arranged at the front end of the monitoring device body and the distribution network side maintenance platform in a signal manner, and the output end of the alarm unit is connected with an alarm arranged on the monitoring device body and the distribution network side maintenance platform in a signal manner.
In the distribution network side power quality monitoring device, the distribution transformer data compensation unit and the load data compensation unit are used for analyzing and processing, so that the monitoring device body can effectively conduct data compensation and calibration on the monitored distribution network side data.
As a further improvement of the application, the electric energy quality processing unit comprises a quality analysis processing module and an abnormal channel verification module, wherein the output end of the quality analysis processing module is connected with a two-channel starting module, and the output end of the two-channel starting module is in signal connection with the abnormal channel verification module;
the input end of the quality analysis processing module is respectively connected with the distribution network side data acquisition unit, the load data acquisition unit, the distribution transformer data acquisition unit, the initial parameter acquisition unit, the load acquisition unit, the distribution transformer data compensation unit and the load data compensation unit through signals;
the input end of the abnormal channel verification module is respectively connected with the distribution network side data acquisition unit, the load data acquisition unit, the distribution transformer data compensation unit and the load data compensation unit through signals;
the output ends of the quality analysis processing module and the abnormal channel verification module are respectively connected with the evaluation data output unit and the alarm unit in a signal way.
As a still further improvement of the method, the evaluation data output unit comprises an evaluation data receiving module which is respectively connected with the output ends of the quality analysis processing module and the abnormal channel verification module in a signal mode, the output end of the evaluation data receiving module is connected with a two-channel data judging module, the output end of the two-channel data judging module is connected with an iteration data output module, and the output end of the iteration data output module is respectively connected with a display arranged at the front end of the monitoring device body and a distribution network side maintenance platform in a signal mode.
As a further improvement of the method, the output end of the dual-channel data judging module is also connected with a full data storage log module and a data marking module, the output end of the data marking module is in signal connection with the full data storage log module, and the output end of the full data storage log module is in signal connection with a memory arranged in a server at the distribution network side.
As a further improvement of the application, the output end of the power quality processing unit is also connected with a sampling frequency regulating unit, and the output end of the sampling frequency regulating unit is respectively connected with the distribution network side data acquisition unit, the load data acquisition unit and the distribution transformer data acquisition unit through signals.
In addition, the output end of the power quality processing unit is also connected with a data storage learning unit, the output end of the data storage learning unit is connected with a cloud database, and the output end of the cloud database is in signal connection with the power quality processing unit.
In addition, the input end of the power quality processing unit is also connected with a load trend prediction unit, the input end of the load trend prediction unit is respectively connected with the load data acquisition unit and the load amount acquisition unit in a signal way, and the output end of the load trend prediction unit is also connected with the load data compensation unit in a signal way.
As the supplement of this application, the input of electric energy quality processing unit still is connected with and joins in marriage net side environment collection unit, joins in marriage net side environment collection unit's input and is connected with environmental monitor, joins in marriage net side environment collection unit's output still respectively with distribution transformer data compensation unit and load data compensation unit signal connection.
In sum, through distribution transformer data acquisition unit, initial parameter acquisition unit, load data acquisition unit and load capacity acquisition unit's setting, can assist monitoring device body to gather distribution transformer and each item data of load, then through distribution transformer data compensation unit and load data compensation unit analysis and processing, can effectively promote monitoring device body to carrying out data compensation and calibration to the distribution network side data of monitoring, in improving monitoring device body monitoring precision, can also effectively improve the precision and the reliability of its evaluation result, effectively improve the self-adaptation performance of monitoring device body, promote the application of monitoring device body in the side of different distribution networks, enlarge the range of application of monitoring device body.
Drawings
FIG. 1 is a block diagram showing the cooperation of units in a monitoring device body according to embodiments 1 and 2 of the present application;
fig. 2 is a topology diagram of an application of the monitoring device body of the 1 st and 2 nd embodiments of the present application in a distribution network side;
FIG. 3 is a logic diagram of the cooperation of units in the body of the monitoring device according to embodiments 1 and 2 of the present application;
fig. 4 is a logic diagram of evaluation of the monitoring data collected by the monitoring device body according to the 1 st and 2 nd embodiments of the present application when the monitoring data is normal;
fig. 5 is a logic diagram of evaluation of abnormal monitoring data collected by the monitoring device body according to the 1 st and 2 nd embodiments of the present application.
The reference numerals in the figures illustrate:
1 monitoring device body, 2 distribution network side server.
Detailed Description
The following describes 2 embodiments of the present application in detail with reference to the accompanying drawings.
Embodiment 1:
fig. 1 to 5 show a power quality processing unit carried in a monitoring device body 1, wherein the input end of the power quality processing unit is connected with a distribution network side data acquisition unit, a load data acquisition unit, a distribution transformer data acquisition unit, an initial parameter acquisition unit, a load acquisition unit, a distribution transformer data compensation unit and a load data compensation unit;
the input end of the distribution transformer data compensation unit is respectively connected with the distribution transformer data acquisition unit and the initial parameter acquisition unit in a signal manner, and the input end of the load data compensation unit is respectively connected with the load data acquisition unit and the load capacity acquisition unit in a signal manner;
the output end of the power quality processing unit is connected with an evaluation data output unit and an alarm unit;
the input end of the distribution network side data acquisition unit is in signal connection with the power output end of the distribution network side, the input end of the load data acquisition unit is in signal connection with the load power consumption statistical end, the input end of the distribution transformer data acquisition unit is in signal connection with a distribution transformer arranged on the distribution network side, the input end of the initial parameter acquisition unit is in signal connection with a maintenance platform on the distribution network side, and the input end of the load amount acquisition unit is in signal connection with a load connection end arranged on the distribution network side;
the output end of the evaluation data output unit is respectively connected with a display arranged at the front end of the monitoring device body 1 and a distribution network side maintenance platform in a signal manner, the output end of the alarm unit is connected with an alarm arranged on the monitoring device body 1 and the distribution network side maintenance platform in a signal manner, through the arrangement of the distribution transformer data acquisition unit, the initial parameter acquisition unit, the load data acquisition unit and the load acquisition unit, the monitoring device body 1 can be assisted to acquire various data of the distribution transformer and the load, then the distribution transformer data compensation unit and the load data compensation unit are used for analyzing and processing, the monitoring device body 1 can be effectively promoted to perform data compensation and calibration on the monitored distribution network side data, the monitoring accuracy of the monitoring device body 1 can be improved, the accuracy and the reliability of the evaluation result of the monitoring device body 1 can be effectively improved, the self-adaptation performance of the monitoring device body 1 can be promoted to be applied to different distribution network sides, and the application range of the monitoring device body 1 can be expanded.
Fig. 1-5 show that the output end of the power quality processing unit is further connected with a sampling frequency regulation unit, the output end of the sampling frequency regulation unit is respectively connected with a distribution network side data acquisition unit, a load data acquisition unit and a distribution transformer data acquisition unit, abnormal data can be monitored by the monitoring device body 1 for regulation and control of sampling frequency through the arrangement of the sampling frequency regulation unit, the monitoring error of the monitoring device body 1 is reduced through the mode of increasing sampling data samples, the monitoring device body 1 is assisted to judge the abnormal cause, the evaluation precision of the monitoring device body is improved, the processing rate of the monitoring device body 1 to the acquired data can be effectively promoted through the arrangement of the sampling frequency regulation unit, the operation burden of the monitoring device body 1 is reasonably adapted, and the intelligence of the monitoring device body 1 is improved.
Fig. 1-5 show that the output end of the power quality processing unit is also connected with a data storage learning unit, the output end of the data storage learning unit is connected with a cloud database, the output end of the cloud database is connected with the power quality processing unit through signals, and the reference sample for data analysis and compensation processing of the monitoring device body 1 can be effectively increased through the arrangement of the data storage learning unit and the cloud database, so that the monitoring device body 1 has the functions of autonomous learning and continuous updating, the reliability and the accuracy of the monitoring device body 1 on power quality evaluation are improved, and the maintenance accuracy of a power grid by an auxiliary distribution network side maintenance platform is improved.
Fig. 1-5 show that the input end of the power quality processing unit is further connected with a load trend prediction unit, the input end of the load trend prediction unit is respectively connected with a load data acquisition unit and a load capacity acquisition unit in a signal manner, the output end of the load trend prediction unit is further connected with a load data compensation unit in a signal manner, the setting of the load trend prediction unit can effectively assist the monitoring device body 1 to analyze and process the load application period, the strain of the monitoring device body 1 in the monitoring process can be effectively improved, the data processing precision of the load data compensation unit can be effectively increased, and the data compensation and calibration precision can be improved.
Fig. 1-5 show that the input end of the power quality processing unit is further connected with a distribution network side environment acquisition unit, the input end of the distribution network side environment acquisition unit is connected with an environment monitor, the environment monitor comprises a temperature monitor, a humidity monitor and other environment monitors, the output end of the distribution network side environment acquisition unit is further connected with a distribution transformer data compensation unit and a load data compensation unit in a signal mode, the basis of data analysis of the distribution transformer data compensation unit and the load data compensation unit is further increased through the arrangement of the distribution network side environment acquisition unit, data errors caused by environmental changes are reduced, and the monitoring precision of the monitoring device body 1 is further improved.
Fig. 1 to 5 show a process of using the monitoring device body 1, firstly, inputting original parameters of distribution transformation at the installation place of the monitoring device body 1 to an initial parameter acquisition unit through a distribution network side maintenance platform, wherein the original parameters include, but are not limited to, related original parameters such as distribution network side load data, rated load data, distribution transformer rated data, distribution transformer stability data and maintenance data, and then the initial parameter acquisition unit outputs the data to an electric energy quality processing unit, and the electric energy quality processing unit stores the data for standby; the distribution transformer data acquisition unit acquires real-time data of the distribution transformer, including but not limited to voltage, current, temperature and the like, and then the distribution transformer data acquisition unit transmits the real-time data to the distribution transformer data compensation unit and the power quality processing unit respectively;
the distribution network side environment acquisition unit acquires environment data including but not limited to temperature, humidity and the like of the monitoring device body 1 through an environment monitor, and transmits the environment data to the distribution transformer data compensation unit, the load data compensation unit and the power quality processing unit respectively;
at this time, the distribution transformer data compensation unit analyzes and calculates the error influence generated by the distribution transformer at this time according to the received data and environmental data of the distribution transformer, and transmits the error compensation data after analysis and calculation to the power quality processing unit;
the load data acquisition unit acquires load electricity consumption data through a load electricity consumption statistical end at the distribution network side, and then respectively transmits the data to the load data compensation unit, the load trend prediction unit and the electric energy quality processing unit; the load capacity acquisition unit acquires the circuit load data and load power of the monitoring end of the monitoring device body 1 through the load connection end of the distribution network side, then respectively transmits the acquired load data to the load data compensation unit, the load trend prediction unit and the power quality processing unit, the load trend prediction unit analyzes and predicts the power consumption trend of the load according to the change data of the load power consumption in each period, and respectively transmits trend data to the load data compensation unit and the power quality processing unit, and the load data compensation unit analyzes and calculates the influence errors generated by the load according to the received load related data and then transmits the analyzed and calculated error compensation data to the power quality processing unit;
the distribution network side data acquisition unit monitors electric energy data of an electric energy output end of the distribution network side, including but not limited to data such as voltage waveforms, current waveforms, frequency deviation, harmonic content, voltage flicker, transient overvoltage and the like, the distribution network side data acquisition unit transmits the data acquired by monitoring to the electric energy quality processing unit, the electric energy quality processing unit analyzes, calibrates and evaluates the electric energy quality of the distribution network side according to the monitored electric energy data, environment data and error compensation data, judges whether the electric energy quality of the distribution network side is normal or not, then transmits evaluation data to the evaluation data output unit, the evaluation data output unit respectively displays the data on a display of the monitoring device body 1, the display can only display data of whether the electric energy of the distribution network side is normal or not, and transmits the data to the distribution network side maintenance platform, and meanwhile, the electric energy quality processing unit transmits the monitored data and the evaluation data to the data storage learning unit, so that the data storage learning unit transmits the data to the cloud database, thereby facilitating the follow-up formation of a reference database of the monitoring device body 1 and the follow-up intelligent development and application of the monitoring device body 1;
when the power quality of the distribution network side is judged to be normal, after the data is processed by the evaluation data output unit and the data storage learning unit, the monitoring device body 1 keeps continuous monitoring action;
when judging that the power quality of the distribution network side is abnormal, the power quality processing unit also sends an abnormal signal to the alarm unit, so that the alarm unit controls the alarm on the monitoring device body 1 to start, transmits the abnormal signal to the distribution network side maintenance platform, and the evaluation data output unit respectively transmits the abnormal data to the display of the monitoring device body 1 and the inside of the distribution network side maintenance platform, then the power quality processing unit sends a multi-sampling verification instruction to the sampling frequency regulation unit, so that the sampling frequency regulation unit respectively regulates the sampling frequency of the distribution network side data acquisition unit, the load data acquisition unit and the distribution transformer data acquisition unit, the sampling data of the stage is increased, and then the power quality processing unit carries out re-analysis, calibration and evaluation on the data monitored subsequently to verify the abnormal data;
if the data is verified to be abnormal, the data is transmitted to the evaluation data output unit again, abnormal data and a continuous alarm are transmitted to the maintenance platform at the distribution network side, and the maintenance platform at the distribution network side and related maintenance personnel are prompted to process the abnormality; if the abnormal disappearance or abnormal misjudgment is verified, transmitting the subsequent data to an evaluation data output unit, transmitting the data of the iterative subsequent evaluation result to a maintenance platform at the distribution network side, and simultaneously canceling the transmission of an alarm signal;
after the abnormal data processing is completed, the electric energy quality processing unit sends a completion instruction to the sampling frequency regulation unit, so that the sampling frequency regulation unit controls the sampling frequency of the distribution network side data acquisition unit, the load data acquisition unit and the distribution transformer data acquisition unit to restore to a preset value, and meanwhile, the electric energy quality processing unit transmits the abnormal data processed by the sampling frequency regulation unit to the data storage learning unit, so that the data storage learning unit processes and classifies the data and transmits the data to the cloud database for storage.
Embodiment 2:
1-5 show that the power quality processing unit comprises a quality analysis processing module and an abnormal channel verification module, wherein the output end of the quality analysis processing module is connected with a two-channel starting module, and the output end of the two-channel starting module is in signal connection with the abnormal channel verification module;
the input end of the quality analysis processing module is respectively connected with the distribution network side data acquisition unit, the load data acquisition unit, the distribution transformer data acquisition unit, the initial parameter acquisition unit, the load acquisition unit, the distribution transformer data compensation unit and the load data compensation unit through signals;
the input end of the abnormal channel verification module is respectively connected with the distribution network side data acquisition unit, the load data acquisition unit, the distribution transformer data compensation unit and the load data compensation unit through signals;
the output ends of the quality analysis processing module and the abnormal channel verification module are connected with the evaluation data output unit and the alarm unit in a signal manner, a double-channel data processing passage can be formed through the quality analysis processing module and the abnormal channel verification module, when the data is abnormal and needs multi-sampling verification, the abnormal channel verification module of the independent verification channel is utilized to judge and verify the data reliability, the effect that the abnormal response and the data transmission are not influenced is effectively achieved, the response measures can be adjusted through the independent abnormal verification function, the operation difficulty of the quality analysis processing module can be reduced, the load of the monitoring device body 1 on data processing is reduced, and the stability of the data monitoring and the electric energy quality evaluation of the monitoring device body 1 is improved.
Fig. 1 to 5 show that the evaluation data output unit includes an evaluation data receiving module which is respectively connected with the output ends of the quality analysis processing module and the abnormal channel verification module in a signal manner, the output end of the evaluation data receiving module is connected with a two-channel data judging module, the output end of the two-channel data judging module is connected with an iteration data output module, the output end of the iteration data output module is respectively connected with a display arranged at the front end of the monitoring device body 1 and a distribution network side maintenance platform in a signal manner, and the evaluation data receiving module, the two-channel data judging module and the iteration data output module are respectively arranged.
Fig. 1-5 show that the output end of the dual-channel data judging module is further connected with a full data storage log module and a data marking module, the output end of the data marking module is in signal connection with the full data storage log module, the output end of the full data storage log module is in signal connection with a memory arranged in the distribution network side server 2, the full data storage log module and the data marking module are arranged, so that the whole process data of the verification data of the monitoring device body 1 can be effectively stored and marked, the inquiry and the downloading of subsequent related technicians are facilitated, the regulation and the guarantee of the data on the distribution network side are convenient to follow-up, the storage of the application data of the monitoring device body 1 can be assisted, and the development and the improvement of the subsequent monitoring device body 1 are promoted.
Fig. 1 to 5 show that in the process of using the monitoring device body 1, the quality analysis processing module analyzes, calibrates and evaluates data collected and monitored by the distribution network side data collection unit, the load data collection unit, the distribution transformer data collection unit, the initial parameter collection unit, the load collection unit, the distribution transformer data compensation unit and the load data compensation unit;
when the quality analysis processing module judges that the power quality of the distribution network side is normal, data in the evaluation data output unit is directly transmitted to the evaluation data receiving module, the evaluation data receiving module transmits single evaluation data received by the evaluation data receiving module to the double-channel data judging module, when judging that the evaluation data is single data, the double-channel data judging module judges that the evaluation result is normal data at the moment, the data are respectively transmitted to the iteration data output module and the full data storage log module, so that the iteration data output module displays the evaluation result data on a display of the monitoring device body 1 and transmits the evaluation result data to the distribution network side maintenance platform, the full data storage log module stores data and results evaluated and detected by the quality analysis processing module into a memory of the distribution network side server 2, the downloading and the reading of follow-up related technicians are facilitated, the data stored by the full data storage log module has certain timeliness, the old data are deleted in the set timeliness, the data validity in the memory is effectively ensured, the memory burden is reduced, and if the data are required, and related data can be queried through the database;
when the quality analysis processing module judges that the power quality of the distribution network side is abnormal, the quality analysis processing module transmits abnormal data to the two-channel enabling module, so that the two-channel enabling module is communicated with the abnormal channel verification module and synchronizes the abnormal data to the abnormal channel verification module, at the moment, the quality analysis processing module controls the sampling frequency regulating unit to regulate the sampling frequency of the distribution network side data acquisition unit, the load data acquisition unit and the distribution transformer data acquisition unit, then the data of the distribution network side data acquisition unit, the load data acquisition unit and the data of the distribution transformer data acquisition unit after frequency regulation and the error compensation data of the distribution transformer data compensation unit and the load data compensation unit after frequency regulation are directly transmitted to the abnormal channel verification module, the abnormal channel verification module processes, analyzes, calibrates and evaluates the data, and then transmits the evaluated data after verification to the evaluation data receiving module, and meanwhile, the quality analysis processing module transmits the evaluated data of the evaluation data to the evaluation data receiving module;
the evaluation data receiving module is used for transmitting the electric energy quality evaluation result transmitted by the quality analysis processing module and the double evaluation result data of the evaluation data after verification by the abnormal channel verification module to the double-channel data judging module after receiving the double evaluation result data of the evaluation data, and the double-channel data judging module is used for comparing the two evaluation data;
when the comparison data is not different or the difference is within a set range, judging that the electric energy at the distribution network side is in an abnormal state, then transmitting the data to an iteration data output module, directly outputting the verification result of the quality analysis processing module without generating iteration action, transmitting abnormal data and a continuous alarm to a maintenance platform at the distribution network side, and prompting the maintenance platform at the distribution network side and related maintenance personnel to process the abnormality;
when the comparison data are different and the difference exceeds a set range, judging that the power on the distribution network side is normal at the moment, transmitting the data to an iteration data output module, generating an iteration action by the iteration data output module, outputting a verification result of the verified evaluation data iteration quality analysis processing module, transmitting data of an iteration follow-up evaluation result to a distribution network side maintenance platform, and canceling transmission of an alarm signal;
after receiving the double data, the double-channel data judging module outputs the evaluation result of the double data and the relevant monitoring data to the all-data storage log module at the same time, and outputs the data segment with abnormality to the data marking module, so that the data marking module marks the same data segment in the all-data storage log module, and then the all-data storage log module outputs the marked data to a memory of the distribution network side server 2 for storage, thereby facilitating the downloading and application of subsequent relevant maintenance personnel and technicians and being beneficial to the continuous improvement and development of the monitoring device body 1.
The scope of protection of the above-described embodiments employed in the present application is not limited to the above-described embodiments, and various changes made by those skilled in the art without departing from the spirit of the present application are still within the scope of protection of the present invention.
Claims (4)
1. The utility model provides a join in marriage net side electric energy quality monitoring devices which characterized in that: the monitoring device comprises an electric energy quality processing unit carried in a monitoring device body (1), wherein the input end of the electric energy quality processing unit is connected with a distribution network side data acquisition unit, a load data acquisition unit, a distribution transformer data acquisition unit, an initial parameter acquisition unit, a load amount acquisition unit, a distribution transformer data compensation unit and a load data compensation unit;
the input end of the distribution transformer data compensation unit is respectively connected with the distribution transformer data acquisition unit and the initial parameter acquisition unit in a signal manner, and the input end of the load data compensation unit is respectively connected with the load data acquisition unit and the load capacity acquisition unit in a signal manner;
the input end of the power quality processing unit is also connected with a load trend prediction unit, the input end of the load trend prediction unit is respectively connected with the load data acquisition unit and the load amount acquisition unit in a signal way, and the output end of the load trend prediction unit is also connected with the load data compensation unit in a signal way;
the output end of the power quality processing unit is connected with an evaluation data output unit and an alarm unit;
the input end of the distribution network side data acquisition unit is in signal connection with the distribution network side electric energy output end, the input end of the load data acquisition unit is in signal connection with the load power consumption statistical end, the input end of the distribution transformer data acquisition unit is in signal connection with a distribution transformer arranged on the distribution network side, the input end of the initial parameter acquisition unit is in signal connection with a distribution network side maintenance platform, and the input end of the load amount acquisition unit is in signal connection with a load connecting end arranged on the distribution network side;
the output end of the evaluation data output unit is respectively connected with a display arranged at the front end of the monitoring device body (1) and a distribution network side maintenance platform in a signal manner, and the output end of the alarm unit is connected with an alarm arranged on the monitoring device body (1) and the distribution network side maintenance platform in a signal manner;
the output end of the power quality processing unit is also connected with a data storage learning unit, the output end of the data storage learning unit is connected with a cloud database, and the output end of the cloud database is in signal connection with the power quality processing unit;
the input end of the power quality processing unit is also connected with a distribution network side environment acquisition unit, the input end of the distribution network side environment acquisition unit is connected with an environment monitor, and the output end of the distribution network side environment acquisition unit is also respectively connected with a distribution transformer data compensation unit and a load data compensation unit through signals;
the output end of the power quality processing unit is also connected with a sampling frequency regulating unit, and the output end of the sampling frequency regulating unit is respectively connected with a distribution network side data acquisition unit, a load data acquisition unit and a distribution transformer data acquisition unit in a signal manner;
the method comprises the steps that original parameters of distribution transformation at the installation position of a monitoring device body (1) are input to an initial parameter acquisition unit through a distribution network side maintenance platform, wherein the original parameters comprise distribution network side load data, rated load data, distribution transformer rated data, distribution transformer stability data and original parameters related to maintenance data, then the initial parameter acquisition unit outputs the data to an electric energy quality processing unit, and the electric energy quality processing unit stores the data for standby; the distribution transformer data acquisition unit acquires real-time data of the distribution transformer, including voltage, current and temperature data of the distribution transformer, and then the distribution transformer data acquisition unit transmits the real-time data to the distribution transformer data compensation unit and the power quality processing unit respectively;
the distribution network side environment acquisition unit acquires environment data of the monitoring device body (1) through the environment monitor, the distribution network side environment acquisition unit respectively transmits the environment data to the distribution transformer data compensation unit, the load data compensation unit and the power quality processing unit, and the distribution transformer data compensation unit analyzes and calculates error influence generated by the distribution transformer at the moment according to the received data of the distribution transformer and the environment data and transmits the error compensation data after analysis and calculation to the power quality processing unit;
the load data acquisition unit acquires load electricity consumption data through a load electricity consumption statistical end at the distribution network side, and then respectively transmits the data to the load data compensation unit, the load trend prediction unit and the electric energy quality processing unit; the load capacity acquisition unit acquires the circuit load data quantity and load power of the monitoring end of the monitoring device body (1) through the load connection end of the distribution network side, then respectively transmits the acquired load data to the load data compensation unit, the load trend prediction unit and the power quality processing unit, the load trend prediction unit analyzes and predicts the power consumption trend of the load according to the change data of the load power consumption of each period, and respectively transmits the trend data to the load data compensation unit and the power quality processing unit, and the load data compensation unit analyzes and calculates the influence errors of the load according to the received load related data, and then transmits the analyzed and calculated error compensation data to the power quality processing unit;
and the power quality processing unit judges whether the power quality of the distribution network side is normal or not according to the monitored power data, environment data and error compensation data.
2. The power quality monitoring device on the distribution network side according to claim 1, wherein: the power quality processing unit comprises a quality analysis processing module and an abnormal channel verification module, wherein the output end of the quality analysis processing module is connected with a two-channel starting module, and the output end of the two-channel starting module is in signal connection with the abnormal channel verification module;
the input end of the quality analysis processing module is respectively connected with the distribution network side data acquisition unit, the load data acquisition unit, the distribution transformer data acquisition unit, the initial parameter acquisition unit, the load acquisition unit, the distribution transformer data compensation unit and the load data compensation unit through signals;
the input end of the abnormal channel verification module is respectively connected with the distribution network side data acquisition unit, the load data acquisition unit, the distribution transformer data compensation unit and the load data compensation unit in a signal manner;
the output ends of the quality analysis processing module and the abnormal channel verification module are respectively connected with the evaluation data output unit and the alarm unit in a signal mode.
3. The power quality monitoring device on the distribution network side according to claim 2, wherein: the evaluation data output unit comprises an evaluation data receiving module which is respectively connected with the output ends of the quality analysis processing module and the abnormal channel verification module in a signal way, the output end of the evaluation data receiving module is connected with a two-channel data judging module, the output end of the two-channel data judging module is connected with an iteration data output module, and the output end of the iteration data output module is respectively connected with a display arranged at the front end of the monitoring device body (1) and a distribution network side maintenance platform in a signal way.
4. A distribution network side power quality monitoring device according to claim 3, wherein: the output end of the dual-channel data judging module is also connected with a full data storage log module and a data marking module, the output end of the data marking module is in signal connection with the full data storage log module, and the output end of the full data storage log module is in signal connection with a memory arranged in the distribution network side server (2).
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Effective date of registration: 20240516 Address after: 244000 No. 58 nanhu road, 5 Song Town, Yi An District, Tongling, Anhui Patentee after: TONGLING YIAN POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER Co. Country or region after: China Patentee after: STATE GRID ANHUI ELECTRIC POWER CO., LTD. TONGLING POWER SUPPLY Co. Address before: Room 512 and 513, A3 / F, Hefei Innovation Industrial Park, 800 Wangjiang West Road, high tech Zone, Hefei, Anhui 230000 Patentee before: Anhui Xinjie Intelligent Technology Co.,Ltd. Country or region before: China |