CN112394222A - Load comparison method and system for line loss monitoring - Google Patents
Load comparison method and system for line loss monitoring Download PDFInfo
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- CN112394222A CN112394222A CN202011307033.2A CN202011307033A CN112394222A CN 112394222 A CN112394222 A CN 112394222A CN 202011307033 A CN202011307033 A CN 202011307033A CN 112394222 A CN112394222 A CN 112394222A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/066—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
Abstract
The invention relates to the technical field of intelligent electricity stealing prevention, in particular to a load comparison method and a system for line loss monitoring.A passive data acquisition unit is arranged at a primary side incoming line of a transformer or an overhead line or a drop-out switch, acquires primary side three-phase current load data, and transmits the three-phase current data to a load monitoring system master station through a wireless network; a data acquisition terminal is arranged to acquire three-phase current load data of the electric meter through electric energy meter regulation, and the three-phase current data is transmitted to a load monitoring system main station by using a wireless network; and finally, comparing the load curve through the load monitoring system, and screening the generated electricity utilization abnormity. The invention provides technical support and data record for judging the transformer loss and the abnormal power utilization information of users. The hidden danger of electricity stealing behavior of the power system electricity utilization households is comprehensively eliminated, and the benefit of power supply enterprises is improved.
Description
Technical Field
The invention relates to the technical field of intelligent electricity stealing prevention, in particular to a load comparison method and system for line loss monitoring.
Background
With the continuous development of scientific and technological technology, various high-tech electricity stealing methods are diversified, diversified and concealed, but the related power supply departments lack practical and effective technical means, and electricity stealing behaviors are eradicated, so that the electricity stealing amount in China is continuously increased every year, great economic loss is brought to power enterprises, and great risks are brought to power supply and utilization management order and power safety production. Energy conservation, loss reduction, benefit improvement and electricity stealing prevention become an important task for power enterprises. The traditional electric larceny prevention equipment and means are incapable of doing without power in the presence of a plurality of novel electric larceny modes and cannot meet the requirements of the development of the era.
Therefore, it is urgently needed to develop a method and a device which are comprehensive in investigation and treatment types and can discover various electricity stealing types and abnormal metering, discover the abnormal electric energy metering and electricity stealing behaviors of users in time, reduce the economic loss of power supply enterprises, ensure the normal electricity utilization of people, create a safe and orderly electricity utilization environment, and promote the sustainable and healthy development of national economy.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses a load comparison method and a load comparison system for line loss monitoring, which realize remote real-time monitoring and comparison analysis through a master station system, generate reports and power consumption abnormity early warning functions, thereby achieving the purposes of searching line loss reasons for auxiliary analysis, preventing power stealing behaviors, reducing power enterprise losses, comprehensively eliminating the hidden danger of the power stealing behaviors of power consumption households of a power system and improving the benefits of power supply enterprises.
The invention is realized by the following technical scheme:
the invention discloses a load comparison system for line loss monitoring, wherein a passive data acquisition unit is arranged at a primary side incoming line of a transformer or an overhead line or a drop-out switch of the system, primary side three-phase current load data are acquired, and three-phase current data are transmitted to a load monitoring system master station through a wireless network;
a data acquisition terminal is arranged to acquire three-phase current load data of the electric meter through electric energy meter regulation, and the three-phase current data is transmitted to a load monitoring system main station by using a wireless network; and finally, comparing the load curve through the load monitoring system, and screening the generated electricity utilization abnormity.
Furthermore, the load monitoring system main station simultaneously acquires primary side data and secondary side data of the corresponding user.
Furthermore, the load monitoring system main station is set to compare the load curves of the statistics of the primary data of the special transformer and the secondary data of the corresponding user, screen the abnormal power utilization and realize the real-time monitoring of the power utilization state of the user.
Furthermore, the hardware of the passive data acquisition unit comprises a microprocessor, an I/O interface, a man-machine interface and a communication interface; wherein the software part consists of a monitoring program and a function execution program.
Furthermore, the passive data acquisition device comprises two data acquisition modes of acquisition according to a data center command and active timing acquisition, and when data is processed, additional information such as energy consumption type and time is added into a data packet according to a remote transmission data packet format, the data packet is transmitted by using an XML format, and data is remotely transmitted by a TCP protocol.
Furthermore, the load monitoring system master station is provided with a presentation layer, an application layer, a service layer and a data layer, collects, calculates and converts data, and comprehensively analyzes the primary side power and the secondary side power of the user-specific transformer from the user power utilization management system by utilizing the presentation layer to find the loss of the user transformer and the abnormal power utilization of the user in real time and all-around manner.
Furthermore, the presentation layer is a B/S end of a subscriber line loss monitoring and analyzing system, the application layer comprises a service sublayer and an external interface, and the functions of the service sublayer comprise data files, alarm processing, stealing power analysis and task correspondence; the service layer comprises data access, message service, report service and other services, and the data layer is a database.
Furthermore, the data acquisition terminal acquires and stores three-phase current data of the secondary side electric energy meter through an RS-485 line, performs data transmission through a wireless network, and uploads the data to a master station of the load monitoring system.
In a second aspect, the present invention discloses a load comparison method for line loss monitoring, where the method is executed using the load comparison system for line loss monitoring of the first aspect, and the method includes the following steps:
s1, collecting and processing the electricity utilization information of the high-voltage side of the electricity utilization user by using a wireless data collector, storing the three-phase current value of the primary side, transmitting the data by using a wireless network, and uploading the data to a main station of a load monitoring system;
s2, acquiring and storing three-phase current data of the secondary side electric energy meter by using the data acquisition terminal through an RS-485 line, transmitting the data by using a wireless network, and uploading the data to a master station of the load monitoring system;
s3, analyzing and comparing the load monitoring system master station with the high-voltage side primary side data uploaded by the collector according to the corresponding logical relationship;
s4 is finally displayed in the form of curve, report form, etc., to find the electricity stealing event and phenomenon in time and send out alarm.
Furthermore, in the method, the load monitoring system master station acquires the data on the high-voltage side uploaded by the collector, and simultaneously acquires the user power utilization information on the low-voltage side uploaded by the data acquisition terminal.
The invention has the beneficial effects that:
the load monitoring system master station collects, calculates and converts data, and a subscriber line loss monitoring and analyzing system B/S end detects the primary and secondary side power of a subscriber-dedicated transformer from a subscriber power utilization management system in real time and all-around manner through comprehensive analysis, thereby providing technical support and data record for judging the transformer loss and subscriber power utilization information abnormity. The hidden danger of electricity stealing behavior of the power system electricity utilization households is comprehensively eliminated, and the benefit of power supply enterprises is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of a load contrast system for line loss monitoring;
FIG. 2 is a schematic diagram of a load monitoring system master station;
fig. 3 is a hardware diagram of a master station of a load monitoring system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment discloses a load comparison system for line loss monitoring as shown in fig. 1, wherein a passive data acquisition unit is arranged at a primary side incoming line of a transformer or an overhead line or a drop-out switch of the system, acquires primary side three-phase current load data, and transmits the three-phase current data to a load monitoring system master station through a wireless network;
a data acquisition terminal is arranged to acquire three-phase current load data of the electric meter through electric energy meter regulation, and the three-phase current data is transmitted to a load monitoring system main station by using a wireless network; and finally, comparing the load curve through the load monitoring system, and screening the generated electricity utilization abnormity.
In this embodiment, the hardware of the passive data collector includes a microprocessor, an I/O interface, a man-machine interface, and a communication interface; wherein the software part consists of a monitoring program and a function execution program.
The passive data acquisition device comprises two data acquisition modes of acquisition according to a data center command and active timing acquisition, and when data is processed, additional information such as energy consumption type, time and the like is added into a data packet according to a remote transmission data packet format, the data is transmitted by using an XML format, and data is remotely transmitted through a TCP protocol.
In this embodiment, the data acquisition terminal acquires and stores three-phase current data of the secondary side electric energy meter through an RS-485 line, performs data transmission through a wireless network, and uploads the data to the master station of the load monitoring system.
Example 2
The embodiment discloses that a load monitoring system main station shown in fig. 2 is provided with a presentation layer, an application layer, a service layer and a data layer, data are collected, calculated and converted, and the presentation layer is used for comprehensively analyzing the primary side power and the secondary side power of a user-specific transformer from a user power utilization management system to find the loss of the user transformer and the abnormal power utilization of the user in real time and all-around manner.
In this embodiment, the presentation layer is a B/S end of a subscriber line loss monitoring and analyzing system, the application layer includes a service sublayer and an external interface, and the service sublayer functions include data archive, alarm processing, analysis of electricity stealing and task correspondence; the service layer comprises data access, message service, report service and other services, and the data layer is a database. The hardware of which is shown in fig. 3.
In this embodiment, the load monitoring system master station simultaneously obtains primary side data and secondary side data of a corresponding user. And setting a load curve for comparing the primary side data of the special transformer with the secondary side data statistics of the corresponding user, screening the generated power utilization abnormity, and realizing the real-time monitoring of the power utilization state of the user.
Example 3
The embodiment discloses a load comparison method for line loss monitoring, which comprises the following steps:
s1, collecting and processing the electricity utilization information of the high-voltage side of the electricity utilization user by using a wireless data collector, storing the three-phase current value of the primary side, transmitting the data by using a wireless network, and uploading the data to a main station of a load monitoring system;
s2, acquiring and storing three-phase current data of the secondary side electric energy meter by using the data acquisition terminal through an RS-485 line, transmitting the data by using a wireless network, and uploading the data to a master station of the load monitoring system;
s3, analyzing and comparing the load monitoring system master station with the high-voltage side primary side data uploaded by the collector according to the corresponding logical relationship;
s4 is finally displayed in the form of curve, report form, etc., to find the electricity stealing event and phenomenon in time and send out alarm.
In this embodiment, the load monitoring system master station acquires the high-voltage side data uploaded by the collector, and simultaneously acquires the user power consumption information uploaded by the data acquisition terminal to the low-voltage side.
Example 4
This embodiment discloses an anti-electricity-theft monitoring system main website is by: the system comprises a power consumption user line loss monitoring device (a wireless data acquisition device and a multifunctional meter reading terminal), a multifunctional electric energy meter for recording user power consumption information and a load monitoring system main station.
A wireless data acquisition unit in the power consumer line loss monitoring device acquires, processes and stores the three-phase current value of the primary side of the power consumer on the high-voltage side, and the data is transmitted by a wireless network and uploaded to a monitoring system main station. The multifunctional meter reading terminal collects and stores three-phase current data of the secondary side electric energy meter through the RS-485 line, performs data transmission through a wireless network, and uploads the data to a monitoring system main station.
The power consumption user load monitoring system master station acquires data on a high-voltage side (primary side) uploaded by a collector and acquires power consumption information of a user on a low-voltage side (secondary side) uploaded by a multifunctional meter reading terminal. And analyzing and comparing the corresponding logic relation with the high-voltage side (primary side) data uploaded by the collector, displaying in the form of curves, reports and the like, finding electricity stealing events and phenomena in time and giving an alarm.
In summary, the load monitoring system master station collects, calculates and converts data, and the subscriber line loss monitoring and analyzing system B/S end detects the subscriber transformer loss and subscriber power utilization abnormity in real time and all-round manner through comprehensive analysis on the primary side and the secondary side power of the subscriber special transformer from the subscriber power utilization management system, thereby providing technical support and data record for the judgment of the transformer loss and the subscriber power utilization information abnormity. The hidden danger of electricity stealing behavior of the power system electricity utilization households is comprehensively eliminated, and the benefit of power supply enterprises is improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A load comparison system for line loss monitoring is characterized in that a passive data acquisition unit is arranged at an inlet wire of a primary side of a transformer or an overhead line or a drop-out switch of the system, primary side three-phase current load data are acquired, and three-phase current data are transmitted to a load monitoring system main station through a wireless network;
a data acquisition terminal is arranged to acquire three-phase current load data of the electric meter through electric energy meter regulation, and the three-phase current data is transmitted to a load monitoring system main station by using a wireless network; and finally, comparing the load curve through the load monitoring system, and screening the generated electricity utilization abnormity.
2. The line loss monitoring load comparison system of claim 1, wherein the load monitoring system master station obtains primary side data and secondary side data of the corresponding user simultaneously.
3. The line loss monitoring load comparison system according to claim 1, wherein the load monitoring system master station is configured to compare load curves of statistics of primary data of the specific transformer and secondary data of corresponding users, screen power consumption anomalies, and realize real-time monitoring of power consumption states of the users.
4. The line loss monitoring load contrast system of claim 1, wherein the passive data collector hardware comprises a microprocessor, an I/O interface, a man-machine interface, and a communication interface; wherein the software part consists of a monitoring program and a function execution program.
5. The line loss monitoring load comparison system according to claim 4, wherein the passive data collector comprises two data collection modes of collection according to a data center command and active timing collection, and when data is processed, additional information such as energy consumption type and time is added to a data packet according to a remote transmission data packet format, and the data is transmitted by using an XML format and is remotely transmitted by a TCP protocol.
6. The line loss monitoring load comparison system according to claim 1, wherein the load monitoring system master station is provided with a presentation layer, an application layer, a service layer and a data layer, collects, calculates and converts data, and comprehensively analyzes the primary and secondary side powers of the user-specific transformer from the user power management system by using the presentation layer to find the transformer loss and the abnormal power consumption of the user in real time and all-around.
7. The load comparison system for line loss monitoring according to claim 1, wherein the presentation layer is a B/S terminal of a subscriber line loss monitoring and analyzing system, the application layer includes a service sublayer and an external interface, and the service sublayer functions include data archive, alarm processing, analysis of stolen electricity and task correspondence; the service layer comprises data access, message service, report service and other services, and the data layer is a database.
8. The line loss monitoring load comparison system according to claim 1, wherein the data acquisition terminal acquires and stores three-phase current data of the secondary side electric energy meter through an RS-485 line, performs data transmission through a wireless network, and uploads the data to a main station of the load monitoring system.
9. A load comparison method for line loss monitoring, when executed using a load comparison system for line loss monitoring according to any one of claims 1 to 8, the method comprising the steps of:
s1, collecting and processing the electricity utilization information of the high-voltage side of the electricity utilization user by using a wireless data collector, storing the three-phase current value of the primary side, transmitting the data by using a wireless network, and uploading the data to a main station of a load monitoring system;
s2, acquiring and storing three-phase current data of the secondary side electric energy meter by using the data acquisition terminal through an RS-485 line, transmitting the data by using a wireless network, and uploading the data to a master station of the load monitoring system;
s3, analyzing and comparing the load monitoring system master station with the high-voltage side primary side data uploaded by the collector according to the corresponding logical relationship;
s4 is finally displayed in the form of curve, report form, etc., to find the electricity stealing event and phenomenon in time and send out alarm.
10. The line loss monitoring load comparison method according to claim 9, wherein in the method, the load monitoring system master station acquires the data on the high-voltage side uploaded by the collector, and simultaneously acquires the user power consumption information on the low-voltage side uploaded by the data collection terminal.
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| CN202011307033.2A CN112394222A (en) | 2020-11-19 | 2020-11-19 | Load comparison method and system for line loss monitoring |
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| CN202011307033.2A CN112394222A (en) | 2020-11-19 | 2020-11-19 | Load comparison method and system for line loss monitoring |
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| CN202011307033.2A Pending CN112394222A (en) | 2020-11-19 | 2020-11-19 | Load comparison method and system for line loss monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567720A (en) * | 2021-06-21 | 2021-10-29 | 齐宜泽 | Beidou-based serial direct current half-wave electricity stealing behavior detection method and system |
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| WO2015081788A1 (en) * | 2013-12-02 | 2015-06-11 | 国家电网公司 | System and method for two-level centralized deployment power supply voltage automatic collection |
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| CN113567720A (en) * | 2021-06-21 | 2021-10-29 | 齐宜泽 | Beidou-based serial direct current half-wave electricity stealing behavior detection method and system |
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Effective date of registration: 20210415 Address after: 041000 north side of Xiangyang West Road, Linfen City, Shanxi Province Applicant after: LINFEN POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER Co. Address before: 041000 north side of Xiangyang West Road, Linfen City, Shanxi Province Applicant before: LINFEN POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER Co. Applicant before: SHENZHEN TCHUIN TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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