CN116581875A - Distributed power supply power quality monitoring method and device - Google Patents
Distributed power supply power quality monitoring method and device Download PDFInfo
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- CN116581875A CN116581875A CN202310445862.4A CN202310445862A CN116581875A CN 116581875 A CN116581875 A CN 116581875A CN 202310445862 A CN202310445862 A CN 202310445862A CN 116581875 A CN116581875 A CN 116581875A
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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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Abstract
The invention provides a distributed power supply power quality monitoring method and device, comprising the following steps: s1: collecting and storing electric energy data information on a distributed power supply; s2: dividing the electric energy data information according to the electric energy data information on the distributed power supply, and counting the electric energy data information on different lines; s3: marking the abnormal line according to the electric energy data information on the different lines; s4: dividing the line into a plurality of areas according to the abnormal line; s5: and comparing the electric energy data in any two areas according to the electric energy data of the areas, and determining an abnormal area. The invention is electrically connected with the data acquisition and storage module, the data statistics module, the line marking module, the area positioning module and the data comparison module, so that when the data acquisition module monitors that the data is abnormal, the abnormal data and the abnormal area can be accurately positioned and traced to be maintained or replaced in a short time, and the electricity consumption of residents and equipment is ensured.
Description
Technical Field
The invention relates to the technical field of power quality monitoring of power systems, in particular to a method and a device for monitoring the power quality of a distributed power supply.
Background
In order to improve the energy utilization rate, a large number of distributed power supplies are connected into a power grid, and the distributed power supplies have randomness and fluctuation, influence the power quality of power supply and have a certain influence on the normal operation of power equipment. The power quality monitoring system can establish data required by power quality control of a power grid, and provides a basis and a foundation for research of a power quality comprehensive control technology.
In the prior art, many researches are carried out on a method and a device for monitoring the power quality of a distributed power supply, for example, application publication number CN107607814A, and the method and the device for monitoring the power quality of the distributed power supply can deal with the more complex and variable power quality problems caused by the incorporation of the distributed power supply into a power grid by carrying out on-line monitoring and analysis on the power quality of the grid connection of the distributed power supply; the method has the advantages that the high-efficiency management of mass monitoring data is realized, the original monitoring data is stored in the sub-data servers of all monitoring terminals after being compressed, only a small amount of characteristic data is stored in the main data server, the unified management is carried out on data resources, the storage space and the network bandwidth of all servers are fully utilized, the storage space is saved, the access efficiency is improved, and the high reliability and the high expandability are realized; the calibration of the data source is realized, the accuracy of the data is ensured, the data temporary storage module is arranged at the monitoring terminal, and the data is temporarily stored when the communication condition is poor; meanwhile, a data calibration module is arranged to calibrate and correct the acquired data.
However, as can be seen from the above description, since a large amount of distributed power sources are connected in parallel in the power grid, the acquisition terminal acquires a large amount of data every day, and the distributed power sources have the characteristics of randomness and volatility, when the acquisition terminal monitors that the data are abnormal, the data are huge, the abnormal data and the abnormal area cannot be accurately positioned in a short time, so that the hidden danger area cannot be quickly traced, and the maintenance or replacement of the hidden danger area is not found, thereby affecting the electricity consumption of residents and equipment.
Disclosure of Invention
The invention aims to provide a distributed power supply power quality monitoring method and device, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a distributed power supply power quality monitoring method comprises the following steps:
s1: collecting and storing electric energy data information on a distributed power supply;
s2: dividing the electric energy data information according to the electric energy data information on the distributed power supply, and counting the electric energy data information on different lines;
s3: marking the abnormal line according to the electric energy data information on the different lines;
s4: dividing the line into a plurality of areas according to the abnormal line;
s5: and comparing the electric energy data in any two areas according to the electric energy data of the areas, and determining an abnormal area.
Preferably, when the data in step S1 is transmitted from the data acquisition module to the data storage module, the communication condition is judged first, and when the communication condition is not good, the data transmission is stopped, the data is temporarily stored in the data temporary storage module, and the data is transmitted again until the communication condition is recovered.
Preferably, the line area includes line location and number and voltage class of the distributed power supply.
Preferably, the information collected by the data collection module includes power quality data, distributed power output, installation position, manufacturer and model and specifications.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the device based on the distributed power supply power quality monitoring method in any of the above comprises:
the data acquisition and storage module is used for acquiring and storing electric energy information on the distributed power supply;
the data statistics module is used for separating the electric energy information according to the electric energy information on the distributed power supply and counting the electric energy data on different lines;
the circuit marking module is used for marking the abnormal circuit according to the electric energy data on the different circuits;
the area positioning module is used for dividing the circuit into a plurality of areas according to the abnormal circuit;
and the data comparison module is used for comparing the electric energy data in any two areas according to the electric energy data of the areas and determining an abnormal area.
Preferably, the data acquisition and storage module comprises an electric energy quality acquisition unit and a distributed power supply monitoring unit, wherein the electric energy quality acquisition unit is used for acquiring electric energy quality data, and the distributed power supply monitoring unit is used for acquiring data information of a distributed power supply.
Preferably, the data acquisition and storage module further comprises a data temporary storage unit, and temporary storage is performed on the data information acquired by the data acquisition and storage module when the signal is poor.
Preferably, the data acquisition and storage module further comprises a standby data acquisition unit, and the standby data acquisition unit adopts portable acquisition equipment.
Compared with the prior art, the invention has the beneficial effects that:
the data acquisition and storage module, the data statistics module, the line marking module, the area positioning module and the data comparison module are electrically connected, data of different lines can be counted, the line marking module is utilized to mark out the abnormal line which belongs to the data acquisition and storage module, the area positioning module is utilized to divide the area of the abnormal line marked by the line marking module into a plurality of areas, positioning tracing is carried out in the areas, the data comparison module is utilized to compare the statistical data in any two areas, the abnormal area is determined, and finally the abnormal range is determined, so that when the data acquisition and storage module monitors that the data is abnormal, the abnormal data and the abnormal area can be accurately positioned and traced to for maintenance or replacement in a short time, and the electricity consumption of residents and equipment is ensured.
Drawings
FIG. 1 is a flow chart of the steps of the overall structure of the present invention;
FIG. 2 is a block diagram showing the overall structure of the present invention.
FIG. 3 is a block diagram of a data acquisition and storage module according to the present invention.
In the figure: the system comprises a data acquisition and storage module 1, a data statistics module 2, a line marking module 3, a region positioning module 4, a data comparison module 5, a server module 6 and a mobile terminal 7.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
referring to fig. 1 to 2, the present invention provides a technical solution:
a distributed power supply power quality monitoring method, as shown in figure 1, comprises the following steps:
s1: collecting and storing electric energy data information on a distributed power supply;
s2: dividing the electric energy data information according to the electric energy data information on the distributed power supply, and counting the electric energy data information on different lines;
s3: marking the abnormal line according to the electric energy data information on the different lines;
s4: dividing the line into a plurality of areas according to the abnormal line;
s5: and comparing the electric energy data in any two areas according to the electric energy data of the areas, and determining an abnormal area.
The abnormal region confirmation process is specifically as follows: comparing the statistical data in any two areas, if the statistical data in the two areas are equivalent, the lines of the two areas are normal, the abnormal line area is the other area, then comparing the statistical data in the other areas, if the result is greatly different, determining one area as the abnormal line area, then comparing the statistical data in one area of the two areas with the other statistical data, and if the statistical data in the two areas are equivalent, the abnormal area is the other area; if the statistical data results in the two areas are very different, one area of the two areas is an abnormal area, the statistical data in any one area of the two areas is compared with the statistical data in any other area, if the statistical data results in the two areas are equivalent, the other area is an abnormal area, and if the statistical data results in the two areas are very different, the area compared with the other area is an abnormal area.
As one preferred, the line area includes the line location and number and voltage level of the distributed power supply.
Preferably, the information collected by the data collection and storage module 1 includes power quality data, distributed power output, installation location, manufacturer and model, and specifications.
The power quality monitoring device of the distributed power supply, as shown in fig. 2, comprises a data acquisition and storage module 1, which is used for acquiring and storing power data information on the distributed power supply; the data statistics module 2 is used for separating the electric energy data information according to the electric energy data information on the distributed power supply and counting the electric energy data information on different lines; the circuit marking module 3 is used for marking the abnormal circuit according to the electric energy data information on the different circuits; the area positioning module 4 is used for dividing the line into a plurality of areas according to the abnormal line; and the data comparison module 5 is used for comparing the electric energy data in any two areas according to the electric energy data of the areas and determining an abnormal area.
As a preferred embodiment, as shown in fig. 3, the data collecting and storing module 1 further includes a data temporary storage unit, and temporarily stores the information collected by the data collecting and storing module 1 when the wireless signal is poor, and automatically transmits the information collected by the data collecting and storing module 1 to the data temporary storage unit for storage when the wireless signal is good, so as to prevent incomplete and inaccurate data in the data collecting and storing module 1 caused by that part of the data is not transmitted to the data collecting and storing module 1 in time.
As a preference, as shown in fig. 3, the data acquisition and storage module 1 includes a power quality acquisition unit for acquiring power quality data, a distributed power monitoring unit for acquiring data information of the distributed power, and a standby data acquisition unit that can serve as a standby when the data acquisition and storage module 1 is not powered or damaged, the standby data acquisition unit adopting a portable acquisition device.
As a preferred embodiment, as shown in fig. 2, the monitoring device further includes a server module 6 and a mobile terminal 7, where the monitoring device is communicatively connected to the server module 6 and the mobile terminal 7, and the mobile terminal 7 adopts a mobile phone or a tablet.
In this embodiment, through the data acquisition and storage module 1 and the data statistics module 2, the line marking module 3 and the area positioning module 4 and the data comparison module 5, the data of different lines can be counted, the line marking module 3 is utilized to mark out the abnormal line to which the data belongs, the area of the abnormal line marked by the line marking module 3 is divided into a plurality of areas through the area positioning module 4, positioning tracing is performed in the areas, the statistical data in any two areas are compared by the data comparison module 5, the abnormal area is determined, the abnormal area is gradually reduced, and finally the abnormal range is determined, so that when the data acquisition and storage module 1 monitors that the data is abnormal, the abnormal data and the abnormal area can be accurately positioned and traced to for maintenance or replacement in a short time, and the electricity consumption of residents and equipment is ensured.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The method for monitoring the power quality of the distributed power supply is characterized by comprising the following steps of:
s1: collecting and storing electric energy data information on a distributed power supply;
s2: dividing the electric energy data information according to the electric energy data information on the distributed power supply, and counting the electric energy data information on different lines;
s3: marking the abnormal line according to the electric energy data information on the different lines;
s4: dividing the line into a plurality of areas according to the abnormal line; and
s5: and comparing the electric energy data in any two areas according to the electric energy data of the areas, and determining an abnormal area.
2. The method for monitoring the power quality of a distributed power supply according to claim 1, wherein when the collected power information on the distributed power supply is stored, the communication condition is judged first, when the communication condition is not good, the transmission of the power data information is stopped, the power data information is temporarily stored, and the transmission is carried out again until the communication condition is recovered.
3. The method of claim 1, wherein the line area includes line location and number and voltage level of the distributed power supply.
4. The method of claim 1, wherein the information collected by the data collection module includes power quality data, distributed power output, installation location, manufacturer and model, and specifications.
5. An apparatus for a distributed power supply power quality monitoring method according to any of the preceding claims 1-4, comprising:
the data acquisition and storage module is used for acquiring and storing electric energy data information on the distributed power supply;
the data statistics module is used for separating the electric energy data information according to the electric energy data information on the distributed power supply and counting the electric energy data information on different lines;
the circuit marking module is used for marking the abnormal circuit according to the electric energy data information on the different circuits;
the area positioning module is used for dividing the circuit into a plurality of areas according to the abnormal circuit; and
and the data comparison module is used for comparing the electric energy data in any two areas according to the electric energy data of the areas and determining an abnormal area.
6. The device for monitoring the power quality of a distributed power access according to claim 5, wherein the data acquisition and storage module further comprises a data temporary storage unit for temporarily storing data information acquired by the data acquisition and storage module when the signal is poor.
7. The power quality monitoring device for distributed power access of claim 5, wherein the data acquisition and storage module comprises a power quality acquisition unit and a distributed power monitoring unit, the power quality acquisition unit is configured to acquire power quality data, and the distributed power monitoring unit is configured to acquire data information of the distributed power.
8. The distributed power-accessed power quality monitoring device of claim 5, wherein the data acquisition and storage module further comprises a backup data acquisition unit, the backup data acquisition unit employing a portable acquisition device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310445862.4A CN116581875A (en) | 2023-04-24 | 2023-04-24 | Distributed power supply power quality monitoring method and device |
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| CN202310445862.4A CN116581875A (en) | 2023-04-24 | 2023-04-24 | Distributed power supply power quality monitoring method and device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621411A (en) * | 2012-03-02 | 2012-08-01 | 中国电力科学研究院 | Remote diagnosis method for distributed quality of electric energy |
| CN103217621A (en) * | 2012-01-20 | 2013-07-24 | 北京特域科技有限公司 | Power quality monitoring method and power quality monitoring system |
| CN107607814A (en) * | 2017-09-11 | 2018-01-19 | 广东电网有限责任公司云浮供电局 | A kind of electric energy quality monitoring system and its monitoring method of distributed power source access |
| CN115811079A (en) * | 2022-11-14 | 2023-03-17 | 国网河北省电力有限公司营销服务中心 | Distributed power distribution network electric energy quality control method, device, terminal and storage medium |
| CN115940416A (en) * | 2022-12-06 | 2023-04-07 | 广西电网有限责任公司电力科学研究院 | Distributed power quality diagnosis method and system |
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- 2023-04-24 CN CN202310445862.4A patent/CN116581875A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217621A (en) * | 2012-01-20 | 2013-07-24 | 北京特域科技有限公司 | Power quality monitoring method and power quality monitoring system |
| CN102621411A (en) * | 2012-03-02 | 2012-08-01 | 中国电力科学研究院 | Remote diagnosis method for distributed quality of electric energy |
| CN107607814A (en) * | 2017-09-11 | 2018-01-19 | 广东电网有限责任公司云浮供电局 | A kind of electric energy quality monitoring system and its monitoring method of distributed power source access |
| CN115811079A (en) * | 2022-11-14 | 2023-03-17 | 国网河北省电力有限公司营销服务中心 | Distributed power distribution network electric energy quality control method, device, terminal and storage medium |
| CN115940416A (en) * | 2022-12-06 | 2023-04-07 | 广西电网有限责任公司电力科学研究院 | Distributed power quality diagnosis method and system |
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