CN102722851B - Multi-data-interface comprehensive line loss management system based on smart grid technology - Google Patents

Abstract

A multi-data interface comprehensive line loss management system based on a smart grid technology belongs to the field of measurement. The method is characterized in that: based on a NETremoting software system architecture, a distributed line loss refinement accurate comparison analysis system is constructed to form a uniform line loss management application platform; corresponding electric quantity settlement and power consumption information acquisition modes are adopted respectively for different types of users to form line loss statistical subsystems for the different types of users; data or information transmission between each line loss statistical subsystem and the unified line loss management application platform is carried out in a mode of adopting a shared database interface form, an IDP data access interface based on WebService or a mode of directly importing data in an Excel file; the method realizes the acquisition, conversion, cleaning and warehousing of heterogeneous data distributed in different places, and establishes a dynamic seamless interconnection mechanism of data and a real-time quick interaction mechanism of information; thereby realizing fine comparison of line loss. The method can be widely applied to the field of operation/management of the power system.

Description

A multi-data interface comprehensive line loss management system based on smart grid technology

technical field

The invention belongs to the field of measurement, in particular to a line loss measurement system for electric energy measurement.

Background technique

In the process of transmission and distribution (transformation) of electric energy, the power loss, electric energy loss and other losses generated by each component in the power network are collectively referred to as line loss (power supply loss), referred to as line loss.

For the urban power supply department, the line loss usually includes all the electric energy loss from the main transformer of the substation to the electric energy meter of the user.

Line loss electricity cannot be directly measured, it is calculated by subtracting power supply and electricity sales.

The percentage of line loss power to power supply is called line loss rate, or line loss rate for short.

Line loss rate is an important economic index of power supply enterprises, which comprehensively reflects the planning and design, production technology and operation management level of the power grid.

Line loss management is a key link in the management of power supply enterprises. An important task for power companies to implement the national energy conservation and emission reduction deployment is to do a good job in the fine management of line loss and strive to reduce the line loss index.

Smart grid is an advanced modern power system based on advanced communication technology, sensor technology, and information technology, and uses information interaction between grid equipment as a means to achieve grid safety, reliability, economy, energy saving, and interaction.

The development and application of new smart grid technology is an important technical means to improve the level of line loss management.

In recent years, my country has accumulated a lot of research and demonstration application results by promoting the demonstration construction of smart power consumption and smart power distribution technology. In recent years, a large number of large user load management systems, low-voltage centralized meter reading systems, and power consumption information collection systems have been installed and used in large numbers, which has improved the informatization of power consumption management.

In terms of line loss management, various new communication methods have been adopted in various regions of the country to realize the collection of power consumption information, and to strengthen the line loss indicators by improving the coverage level of power consumption monitoring in the station area.

Therefore, how to improve the level of urban line loss management through technical means is of great significance.

How to reduce the line loss rate more effectively through smart meters, fiber-to-the-home and other technical means combined with the development of smart grids has become an important issue facing my country, especially the State Grid.

Contents of the invention

The technical problem to be solved by the present invention is to provide a multi-data interface integrated line loss management system based on smart grid technology, which combines advanced achievements such as smart grid primary equipment intelligent technology and intelligent power consumption technology to establish a unified line loss analysis The system platform and the full-coverage distribution network line loss collection network can perform precise and precise comparison of classified line losses for various types of users, which solves the problem that low-voltage station areas and non-dedicated line users cannot achieve accurate comparison, and fills the gap between non-dedicated lines The technical gap in the fine comparison of the user's line loss provides a good technical solution and demonstration application for the line loss management of the intelligent distribution network.

The technical solution of the present invention is to provide a multi-data interface comprehensive line loss management system based on smart grid technology, which is characterized by:

Based on the .NETRemoting software system architecture, build a distributed line loss refined and accurate comparison and analysis system to form a unified line loss management application platform;

For different types of users, according to the characteristics of various loads and the different types of lines, the corresponding electricity billing and electricity consumption information collection methods are adopted to form a line loss statistics subsystem for different types of users;

The unified line loss management application platform and the line loss statistics subsystem for different types of users constitute a multi-data interface integrated line loss management system based on smart grid technology;

The multi-data interface comprehensive line loss management system uses the data sources and interfaces of the existing various application systems and terminal equipment data channels, and adopts the form of shared database interface, WebService-based IDP data access interface or Excel file to directly import data By means of data transmission or information transmission between each line loss statistics subsystem and the unified line loss management application platform;

The multi-data interface comprehensive line loss management system uses XML database management technology in the database to realize the collection, conversion, cleaning and storage of heterogeneous data distributed in different places, and realizes complete cross-hardware platforms, operating systems, and programming languages. Establish a dynamic seamless interconnection mechanism for data and a real-time and fast information interaction mechanism;

The multi-data interface comprehensive line loss management system, with the help of each line loss statistical subsystem, performs statistical line loss analysis by line and station area according to the distribution network line diagram, and realizes the integration with the existing power consumption management system and load measurement system. Data integration of recording system, line loss system, and load control management system to form a line loss data warehouse and eliminate information islands;

The multi-data interface comprehensive line loss management system, through the statistics and comparison of the power supply and power consumption of different types of users, obtains the refined and accurate comparison results of different types of user line losses, thereby realizing the fine line loss ratio Yes, making user-side information controllable and visible.

Specifically, the different types of users include users in low-voltage station areas.

For such users, the optical fiber is combined in the low-voltage cable, so that the low-voltage cable has the function of optical fiber communication while performing power transmission, and the meter reading power data of each single-phase smart energy meter is uploaded to the power consumption information through the concentrator. The acquisition system forms a line loss statistics subsystem for users in each low-voltage station area.

The meter reading power data of each single-phase smart energy meter is uploaded to the power consumption information collection system through the concentrator through the optical fiber;

In the unified line loss management system platform, after obtaining the total power supply data of the public transformer load measuring instrument platform of each low-voltage station area user and the total power consumption data in the power consumption information collection system, the line In order to obtain the accurate analysis and comparison results of line loss of users in each low-voltage station area; the frequency of accurate analysis and comparison of line loss in the low-voltage station area is carried out on a daily basis.

The optical fiber described in it is laid along with the low-voltage cable to realize the meter-to-home connection, cooperate with the optical access equipment to solve the terminal access problem of the information highway, and carry the two-way interactive services of power consumption information collection and intelligent power consumption;

The single-phase smart energy meter described in it supports remote prepaid recharge through power lines, optical fibers or RS485, realizes remote power on and off functions, and can realize auxiliary recharge functions through local infrared communication.

Specifically, the different types of users also include shared line users.

For such users, the self-falling fuse within the power supply range of the line under the substation is used to directly supply high-voltage users to install high-voltage electric energy meters, and the method of installing load testers in the low-voltage station area of transformers on each pole, constitutes a method for each Line loss statistics subsystem for shared line users;

In the unified line loss management system platform, the m high-voltage watt-hour meters within the power supply range under the line, the n pole-mounted transformer load testers, and the total watt-hour meters on the line in the substation station are "m+n" Accurate comparison of 1" with an hour as the cycle, so as to obtain the precise analysis and comparison results of the comprehensive line loss of the shared line; the frequency of the accurate analysis and comparison of the line loss of the shared line is carried out by the hour; wherein m and n are respectively It is the number of high-voltage electric energy meters installed within the power supply range of the line and the number of transformer load testers on the pole.

The load measuring instrument described above is installed on the low-voltage side of the distribution transformer, and the working load point and zero-sequence loss of the transformer directly belong to the line loss of the entire shared line; the high-voltage electric energy meter directly performs high-voltage measurement on the high-voltage side .

The high-voltage watt-hour meter and the load test recorder adopt the GPRS/CDMA public network data upload method, and the TCP mode is used to establish a channel connection through timing activation or call activation.

Specifically, the different types of users also include dedicated line users.

For such users, the high-voltage electric energy metering device in the substation is installed at the outlet of the dedicated line as the metering device for the power supply, and the billing high-voltage electric energy metering device is installed in the power distribution room of the large high-voltage user to constitute a dedicated line for each user. Line loss statistics subsystem;

Connect the power supply data information and power consumption data information of the line where each dedicated line user is located to the unified line loss management system platform, and compare them by the unified line loss management system platform, so as to obtain the information of each dedicated line user The results of precise analysis and comparison of line loss are carried out, and precise comparison is carried out on this line to study and determine the fluctuation law of line loss of dedicated line users; the frequency of precise analysis and comparison of line loss of dedicated line is carried out on a daily basis.

Compared with prior art, the advantages of the present invention are:

1. Establish a unified line loss management system platform based on the .NETRemoting software system architecture, and connect the power supply data and power consumption data information in various types of line loss statistics subsystems to the unified line loss The management system platform, on the basis of the development of smart grid, conducts refined and accurate comparison of line loss, which can support various types of system platform architecture, database and interface design, software coding and debugging function;

2. Realized the refined and accurate comparison of the line loss of shared line users, eliminated the monitoring blind spots under the shared line that cannot be covered by the load tester, and solved the problem of comprehensive line loss data collection; The management system platform directly analyzes the line loss data of the entire shared line, which can be accurate enough to complete the line loss calculation of each shared line every hour;

3. The architecture of the comprehensive line loss management system with multiple data interfaces is a distributed line loss comparison and analysis system for the entire distribution network line loss application range. The labor intensity of loss statistics calculation work improves the efficiency and accuracy of monthly line loss statistics work, and at the same time avoids the problem that data islands cannot be shared caused by various special systems, making full use of existing various application systems and The data channel and equipment investment of terminal equipment ensure the fast, efficient and accurate line loss fine management;

4. The system has an interactive vector graphics platform, which makes the system operation very intuitive, and the editing and updating of the distribution network circuit diagram is also very simple, which can quickly adapt to the change of the distribution network circuit and meet the actual needs.

Description of drawings

Fig. 1 is a schematic diagram of the system physical framework of the multi-data interface comprehensive line loss management system of the present invention;

Fig. 2 is a schematic diagram of the system application architecture of the multi-data interface integrated line loss management system;

Fig. 3 is a schematic diagram of networking of a power consumption information collection system in a smart power consumption community;

Fig. 4 is the schematic circuit diagram of the main wiring of the shared circuit;

Figure 5 is a schematic diagram of the structure of the high-voltage electric energy meter connected to the load tester system;

Fig. 6 is a schematic diagram of the functional structure of the management system of the multi-data interface integrated line loss management system;

Fig. 7 is a schematic diagram of data sources and interfaces of the multi-data interface integrated line loss management system.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

In Figure 1, this technical solution is based on the .NETRemoting software system architecture (Framework) to build a distributed multi-data interface comprehensive line loss management system.

The reason for adopting the .NETRemoting software system platform is that the system architecture has a comprehensive structure that surpasses the existing networked distributed development platforms (such as CORBA, DCOM, etc.), and has a good distributed networked enterprise-level application advantage. In terms of database, XML database management technology is used to enable the collection, conversion, cleaning and storage of heterogeneous data distributed in different places, to realize complete cross-hardware platforms, operating systems, and programming languages, and to establish a dynamic seamless interconnection mechanism for data and real-time and fast information interaction. mechanism.

Fine and accurate comparison of line loss based on .NETRemoting. The main station system adopts the information service technology based on the WebService framework, provides a web-based browser interface, and can complete various operations directly through browsing without installing client applications. application.

The technical solution of the present invention provides a multi-data interface comprehensive line loss management system based on smart grid technology, which is characterized by:

Based on the .NETRemoting software system architecture, build a distributed line loss refined and accurate comparison and analysis system to form a unified line loss management application platform;

For different types of users, according to the characteristics of various loads and the different types of lines, the corresponding electricity billing and electricity consumption information collection methods are adopted to form a line loss statistics subsystem for different types of users;

The unified line loss management application platform and the line loss statistics subsystem for different types of users constitute a multi-data interface comprehensive line loss management system based on smart grid technology;

The multi-data interface comprehensive line loss management system uses the data sources and interfaces of the existing various application systems and terminal equipment data channels, and adopts the form of shared database interface, WebService-based IDP data access interface or Excel file to directly import data By means of data transmission or information transmission between each line loss statistics subsystem and the unified line loss management application platform;

The multi-data interface comprehensive line loss management system uses XML database management technology in the database to realize the collection, conversion, cleaning and storage of heterogeneous data distributed in different places, and realizes complete cross-hardware platforms, operating systems, and programming languages. Establish a dynamic seamless interconnection mechanism for data and a real-time and fast information interaction mechanism;

The multi-data interface comprehensive line loss management system, with the help of each line loss statistical subsystem, performs statistical line loss analysis by line and station area according to the distribution network line diagram, and realizes the integration with the existing power consumption management system and load measurement system. Data integration of recording system, line loss system, and load control management system to form a line loss data warehouse and eliminate information islands;

The multi-data interface comprehensive line loss management system, through the statistics and comparison of the power supply and power consumption of different types of users, obtains the refined and accurate comparison results of different types of user line losses, thereby realizing the fine line loss ratio Yes, making user-side information controllable and visible.

It should be noted that each drawing in the accompanying drawings of this application specification adopts the customary drawing method or icon in the industry, so its specific meaning and specific structure will not be described here. After the idea and method of solving the problem of the technical solution, the technical solution can be completely reproduced, and similar technical effects and invention objectives can be obtained.

In Figure 2, the constructed distributed line loss refinement multi-data interface integrated line loss management system can perform statistical line loss analysis by sub-lines and sub-regions according to the distribution network line diagram, realizing the integration with the existing power consumption management system, The business integration of load measurement and recording system, line loss system, load control management system and other systems forms a line loss data warehouse and eliminates information islands.

The unified line loss management platform can also avoid the tedious work of manual data collection, summary and input, greatly reduce the labor intensity of line loss statistics and calculations, and improve the efficiency, timeliness and accuracy of line loss statistics.

The distributed multi-data interface comprehensive line loss management system fully integrates the data acquisition advantages of the existing smart grid new technology, and the system realizes the precise and precise comparison of various load characteristics and line losses of various line forms.

Since the system hardware platform, software system and database software involved in the above are all existing technologies, the specific implementation plan, the data transmission mode between each component and module, the networking technology and the existing power consumption management system, The load measuring and recording system, the line loss system, and the load control and management system are all existing technologies, so they will not be described here.

In Fig. 3, the situation of the low-voltage station area user type user is represented by the situation of the smart power consumption demonstration cell.

Optical Fiber Composite Low-voltage Cable (OPLC) is used in the home cable of the smart power consumption demonstration area, which combines optical fiber in a low-voltage (0.4KV) cable, so that the cable has the function of optical fiber communication while performing power transmission. The comprehensive cost is reduced, and the waste of resources caused by the secondary construction is also avoided.

The optical fiber is laid along with the low-voltage cable to achieve meter-to-home access, which solves the terminal access problem of the information highway. Cooperating with optical access equipment, it can carry power consumption information collection and intelligent power consumption. Convergence of telecommunication networks, broadcast television and the Internet.

The electricity settlement and electricity consumption information collection of low-voltage users adopts the smart meter technology.

The single-phase smart energy meter in the picture supports remote prepaid recharge through power line, optical fiber or RS485, realizes the remote power on and off function, and can realize the auxiliary recharge function through local infrared communication.

The meter reading power data of the single-phase smart energy meter in the smart power consumption community is uploaded to the power consumption information collection system through the concentrator. The data of the public transformer load measuring instrument platform of Box A and the data of the power consumption information collection system are obtained and compared for line loss, and the frequency of accurate analysis and comparison of line loss is carried out on a daily basis.

Through the line loss comparison of all end users connected to the low-voltage station area, it has the significance of line loss management and anti-stealing demonstration in the typical low-voltage residential station area, and the cause of line loss can be analyzed through the line loss comparison. On the basis of summarizing, combined with anti-stealing and other management loss reduction measures, the line loss indicators of low-voltage station areas are well controlled.

In Figure 4, the shared line is a typical distribution network power supply form commonly used by power companies. There are several users in the dedicated substation area and public substation area under a shared line. Low pressure side metering.

The co-existence of self-dropping fuse direct supply users and low-voltage station area users in the shared line makes it have typical load type diversity characteristics.

In Figure 5, the load measuring instrument in the pole-mounted transformer station area of the shared line is installed on the low-voltage side of the distribution transformer, so the transformer’s working load point and zero-sequence loss are directly part of the line loss of the entire shared line.

The high-voltage electric energy meter is directly measured on the high-voltage side, and the overall measurement accuracy is 0.5s, which is conducive to direct statistics of line loss.

The total power supply data of the entire shared line is measured by the outgoing watt-hour meter in the substation.

In the same collection time period, the electric quantities of the transformer stations on each pole of the shared line are: G1, G2, ..., Gn; Sm, the total power supply of the shared line is measured by the outgoing watt-hour meter in the substation: Z, then:

The line loss power of the shared line is: $\mathrm{\ΔZ}=Z-(\underset{\mathrm{no}}{\mathrm{\Σ}}G+\underset{m}{\mathrm{\Σ}}S)$

The line loss rate of the shared line is: $\mathrm{\η}=\frac{\mathrm{\ΔZ}}{Z}\×100\%$

In this technical solution, the self-falling fuse within the power supply range of this type of line is directly supplied to the high-voltage user to install a high-voltage electric energy meter, and a load tester is installed in the low-voltage station area of the transformer on the pole. The above two devices pass through wireless network, Internet APN dedicated line and Communication gateway for data transmission and exchange with the unified line loss management platform. Research and demonstration applications of various measuring equipment and multiple comparison methods can be carried out.

After the metering equipment is installed and debugged, an accurate hour-by-hour comparison will be carried out between m high-voltage electric energy meters, n pole-mounted transformer load testers and in-station electric energy meters.

The comparison equipment used on the shared line is subordinate to three independent data acquisition platforms including the load tester system, the high-voltage electric energy meter system, and the unified line loss management platform system.

This multi-data interface comprehensive line loss management system realizes the information integration of three independent platforms.

It is an innovative achievement in the application of this technical solution to realize the fine and accurate comparison of the line loss of the shared line.

The technical solution eliminates the monitoring blind spot under the shared line that cannot be covered by the load measuring recorder, and solves the problem of comprehensively covering line loss data information collection. The line loss data analysis of the entire shared line can be directly performed on the unified line loss management system platform, which can be accurate enough to complete the line loss calculation of each shared line every hour.

It can be seen from the figure that on the physical channel of the communication system, the high-voltage electric energy meter and the load tester both adopt the GPRS/CDMA public network data upload method, and use the TCP mode to establish a channel connection through timing activation or call activation.

The communication protocol and communication mode adjustment settings of the high-voltage electric energy meter can be fully compatible with the requirements of the load tester. For example, the data frame format of the login message needs to be completely in accordance with the "XX Power Company Load Monitor Communication Protocol V2.0" standard. execute etc.

In Figure 6, this multi-data interface comprehensive line loss management system is a distributed line loss fine-grained and accurate comparison and analysis system for the entire distribution network line loss application range, and supports vectorized dynamic display and drag-and-drop functions of the distribution network topology map. Support the query of abnormal logs, and support the query service function of local line loss in the distribution network.

At the same time, the data of the multi-data interface integrated line loss management system comes from different terminal devices and servers, including terminals: low-voltage single-phase smart meters and power consumption information collection concentrators, load testers, metering and billing power meters, High voltage electric energy meter, load control terminal, etc. The server types included are: electricity consumption information collection system, load measuring recorder system, dedicated line loss system, load control system, etc. The data formats and collection periods of various servers are inconsistent. Therefore, in order to achieve the comprehensiveness and effectiveness of line loss analysis and management, it is necessary to build a unified comprehensive line loss management system.

In Figure 7, this technical solution realizes the comprehensive line loss management system architecture of multiple data interface modes, and supports three types of data interface modes:

1) Shared database interface form;

2) IDP data access interface based on WebService;

3) The Excel file directly imports data.

This comprehensive line loss management system with multiple data interfaces avoids the problem that data islands cannot be shared caused by various special systems, and fully utilizes the data channels and equipment investment of various existing application systems and terminal equipment to ensure Fast, efficient and accurate line loss fine management.

In addition to collecting and analyzing the line loss rate index management, it is necessary to detect abnormally high line loss rate in time, so as to quickly find the root cause of the line loss rate mutation, eliminate problems and effectively control the line loss rate index.

The load characteristics of special variable users are mainly combined with the law of production and operation activities, and the line loss rate fluctuates less under normal operating conditions of the enterprise. For dedicated users who may have serious power theft, the line loss rate index will change suddenly.

In actual use, a relatively simple line loss prediction model can be set, and the line loss abnormality can be judged and determined in time based on the predicted line loss rate of the model.

Considering that the line loss rate does not fluctuate much and has a certain correlation with the recent change rule, the predicted line loss rate determined by the model is:

Predicted line loss rate = average line loss rate in the past 180 days * (1 + average change rate of line loss rate in the past three months)

Based on the predicted line loss model, the criteria for abnormal line loss analysis are:

(1) For 3 consecutive days, the line loss rate accurately compared every day exceeded the predicted line loss rate by 4 times.

(2) For one consecutive week, the line loss rate accurately compared every day exceeds 2 times the predicted line loss rate;

(3) The actual accurate line loss rate of the month exceeded 50% of the predicted line loss rate.

The electricity load characteristics of the low-voltage station area are mainly combined with the living rules of residents. The main factors of load law are weekly repeatability, summer and winter peak electricity consumption. Occasional abnormal line loss rates include large deviations of metering devices under the condition of obviously too low load (less than 1% of rated current). However, the fluctuation of the line loss rate should be small under normal circumstances. The predicted line loss rate determined by the model can follow the user's predicted line loss rate method. The root cause of the abnormal line loss rate may be the sudden drop in power consumption of bad users. Verify and eliminate the cause of abnormal line loss by checking the residents' electricity meters with sudden changes in electricity consumption.

The line loss analysis of shared lines is the most complicated, and its main features include: distribution transformer loss in the low-voltage station area, the reliability of the comparison data source of self-falling fuses directly supplied to users, and the power consumption of low-voltage station areas and direct-supplied users Load diversification. Therefore, the line loss analysis of shared lines can be solved technically as follows:

(1) The actual working load of the distribution transformer is monitored through the load tester platform. Often, the lower the ratio of the load to the transformer capacity, the greater the transformer loss. By establishing the loss tables of distribution transformers under different load points, the line loss system can directly obtain the power loss data of distribution transformers by means of table lookup.

(2) Monitor the three-phase unbalance of the distribution transformer through the load tester platform. Often the more serious the three-phase unbalance is, the greater the zero-sequence loss of the neutral point ungrounded system will be. Through the research and establishment of the relationship table between the three-phase unbalance index and the zero-sequence loss of the transformer, the line loss system can directly obtain the unbalance loss of the distribution transformer by looking up the table. At the same time, it is necessary to combine the loss table of the transformer under different load points to conduct the research on the transformer loss.

(3) The power consumption monitoring method for direct supply of self-falling fuses to users needs to adopt a credible high-voltage electric energy direct metering scheme. The high-voltage high-voltage meter on the high-voltage side can prevent power theft and ensure that the comparison data is obtained, accurate and credible .

After an abnormal line loss alarm occurs in the comprehensive line loss management system, it is necessary to implement a metering team to check the equipment. If the equipment is correct, it is necessary to conduct power inspection and supervision.

This technical solution is based on the smart meter electricity information collection terminal technology and the high-voltage electric energy meter technology. The distributed line loss refinement and accurate comparison analysis system is established for different types of lines by day, month, and hour. Accurate analysis and comparison, combined with timely discovery of abnormal line loss, reminds the administrator to carry out management work by popping up an alarm message box or issuing an alarm message to the person in charge of management.

Combined with the application of smart grid technology, this technical solution establishes a multi-data interface comprehensive line loss management system, which has the basic functions of realizing low-voltage station area comparison, shared line comparison, and dedicated line comparison.

This technical solution applies the better transformation of smart grid technical achievements to the fine and accurate comparison of line loss, and realizes the line loss comparison work of low-voltage station area combined with the precise comparison application of line loss in smart power consumption community, and realizes the sharing The medium and high voltage electric energy meter technology of the line is integrated into the load tester platform to eliminate the monitoring blind area.

It adopts the high-voltage electric energy meter technology to realize the collection of power consumption information of the shared line from the self-falling fuse directly to large users, eliminating the monitoring blind spots existing in the traditional load meter system solution, and making the line loss of the shared line refined and accurate to work possible.

This system can realize the data interface and connection with other power automation systems, integrate the data of multiple systems, form a line loss data warehouse, eliminate information islands, and avoid manual data collection, summary and input work, greatly reducing It reduces the labor intensity of line loss statistical calculation work, and improves the efficiency and accuracy of monthly line loss statistical work.

This system has an interactive vector graphics platform, which makes the system operation very intuitive, and the editing and updating of the distribution network circuit diagram is also very simple, which can quickly adapt to the change of the distribution network circuit and meet the actual needs.

According to different types of power data collection, this system can calculate and count line loss by hour and day, and grasp the change of line loss over time.

The system adopts the deployment method of separating the database server and the application server, which improves the stability, reliability and scalability of the system.

The invention can be widely used in the fields of operation analysis and power consumption management of electric power systems.

Claims (5)

1. A multi-data interface integrated line loss management system based on smart grid technology. The multi-data interface integrated line loss management system is based on the .NETRemoting software system architecture, and a distributed line loss refined and accurate comparison and analysis system is formed to form Unified line loss management application platform; for different types of users, according to the characteristics of various loads and the different types of lines, the corresponding electricity billing and electricity consumption information collection methods are adopted to form line loss statistics for different types of users system; the unified line loss management application platform and the line loss statistics subsystem for different types of users constitute a multi-data interface integrated line loss management system based on smart grid technology; the multi-data interface integrated line loss management system, Utilize the data sources and interfaces of the existing various application systems and terminal equipment data channels, adopt the form of shared database interface, the IDP data access interface based on WebService or the method of directly importing data from Excel files, and perform various line loss statistics subsystems and unified lines. Data transmission or information transmission between loss management application platforms; the multi-data interface comprehensive line loss management system uses XML database management technology in the database to realize the collection, conversion, cleaning and storage of heterogeneous data distributed in different places , realize complete cross-hardware platform, operating system, programming language, establish data dynamic seamless interconnection mechanism and information real-time fast interaction mechanism; said multi-data interface comprehensive line loss management system, with the help of each line loss statistics subsystem, according to the distribution network Line diagram, statistical line loss analysis by line and station area, realize data integration with existing power consumption management system, load measurement and recording system, line loss system, and load control management system, form a line loss data warehouse, and eliminate information Isolated island; the multi-data interface comprehensive line loss management system, through the statistics and comparison of the power supply and power consumption of different types of users, can obtain the refined and accurate comparison results of different types of user line losses, so as to achieve fine line loss comparison, so that the user side information can be controlled and visualized; wherein, the different types of users include low-voltage station area users, shared line users and dedicated line users; it is characterized in that: For users of shared lines, self-falling fuses within the power supply range of the substation line are used to directly supply high-voltage users to install high-voltage electric energy meters, and load testers are installed in the low-voltage station areas of transformers on each pole, forming a solution for each Line loss statistics subsystem for shared line users; For dedicated line users, the high-voltage electric energy metering device in the substation is installed at the outlet of the dedicated line as the metering device for the power supply, and the billing high-voltage electric energy metering device is installed in the power distribution room of the large high-voltage user to constitute a dedicated line for each dedicated line user. Line loss statistics subsystem. 2. According to the multi-data interface comprehensive line loss management system based on smart grid technology according to claim 1, it is characterized in that in the described unified line loss management system platform, m units within the power supply range under the shared line user line The high-voltage watt-hour meter, n pole-mounted transformer load recorders, and the total watt-hour meter on the line in the substation station are compared accurately in an hourly cycle of "m+n to 1", so as to obtain the comprehensive line loss accuracy of the shared line. Analysis and comparison results; the frequency of accurate analysis and comparison of the line loss of the shared line is carried out by the hour; wherein m and n are respectively the number of high-voltage electric energy meters installed within the power supply range under the line and the transformer load recorder on the pole the number of . 3. According to the multi-data interface comprehensive line loss management system based on smart grid technology according to claim 2, it is characterized in that the load measuring recorder is installed on the low-voltage side of the distribution transformer, and the working load point and zero point of the transformer are The sequence loss directly belongs to the line loss of the entire shared line; the high-voltage electric energy meter directly performs high-voltage measurement on the high-voltage side. 4. According to the multi-data interface integrated line loss management system based on smart grid technology according to claim 2, it is characterized in that described high-voltage electric energy meter and load test recorder adopt GPRS/CDMA public network data upload mode, adopt TCP mode Channel linking is established by timing activation or call activation. 5. According to the multi-data interface integrated line loss management system based on smart grid technology according to claim 1, it is characterized in that for the dedicated line users, the power supply data information and power consumption of the line where each dedicated line user is located The data information is connected to the unified line loss management system platform, which is compared by the unified line loss management system platform, so as to obtain the accurate analysis and comparison results of the line loss of each dedicated line user, and carry out accurate analysis and comparison on the line. Comparison, research and determination of line loss fluctuation rules of dedicated line users; the frequency of precise analysis and comparison of line loss of dedicated lines is carried out on a daily basis.