CN204440768U - A kind of low-voltage platform area simulation and training system based on rural power grids intelligent type low-voltage panel box - Google Patents

Abstract

The utility model discloses a low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the agricultural network, which includes an intelligent low-voltage management master station system in the training room, a simulated intelligent distribution station area outside the training room and a low-voltage station area. Smart energy meters for power users, where the intelligent low-voltage management master station system includes data storage servers, data processing servers, front-end servers, Web servers, gateway servers, database servers and management terminals. This simulation training system takes the intelligent low-voltage distribution box of rural power grid as the basic unit, and performs real-time monitoring system simulation of power parameter measurement simulation, control and management for its supporting distribution transformer and low-voltage power users. Through the intelligent low-voltage management master station system in the training room, the distribution transformer parameter monitoring, measurement, power consumption information collection, communication, dynamic reactive power compensation control, harmonic suppression and three-phase unbalance control, Realize the application function of real-time monitoring and early warning of electricity safety and power facility protection.

Description

A low-voltage station area simulation training system based on the intelligent low-voltage distribution box of rural power grid

technical field

The utility model belongs to the technical field of rural power grids, in particular to a low-voltage station simulation training system based on an intelligent low-voltage distribution box of the rural power grid.

Background technique

China's rural power grid has already established a certain foundation after large-scale rural power grid transformation, but there are still generally insufficient infrastructure investment, unreasonable grid structure, and relatively backward technological means. It is economical, practical and effective, and will be constructed in stages.

At present, the teaching and training of the rural grid intelligent power distribution system based on the intelligent low-voltage distribution box of the rural grid and the relevant skills of user load and measurement at home and abroad are only on-site education and operation demonstration in the way of masters and apprentices. Due to the singleness of the on-site situation, the master cannot demonstrate the failure of the intelligent low-voltage distribution box of the rural power grid, the problems and solutions of the single-phase and three-phase metering users and the main station software system, and can only adopt the teaching method of solving problems when they arise, so that there are It is impossible to reproduce the possible fault phenomena that may occur in the operation of the intelligent low-voltage distribution box of the rural power grid. At the same time, the test operation data of the intelligent distribution transformer terminal software of the rural power grid is single, and it is impossible to carry out personalized assessments for multiple students. This kind of teaching The method is not conducive to students' understanding and learning, and has been criticized a lot in teaching practice. With the development of smart grid, especially after the large-scale promotion of intelligent upgrading and transformation of rural power grid, there are people who are not familiar with new equipment and new products. There is a problem.

Utility model content

The purpose of this utility model is to provide a low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the rural network that can meet the requirements of the marketing and distribution personnel of the rural network for the installation, commissioning and maintenance of the intelligent low-voltage station area system of the rural network .

The technical solution to realize the purpose of this utility model is: a low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the rural power grid, including the intelligent low-voltage management master station system in the training room and the simulation intelligence outside the training room. Smart energy meters for distribution stations and low-voltage power users, wherein the intelligent low-voltage management master station system includes data storage servers, data processing servers, front-end servers, Web servers, gateway servers, database servers, and management terminals; The meters are all connected to the analog intelligent distribution station area, and the analog intelligent distribution station area is connected to the intelligent low-voltage management master station system, data storage server, data processing server, front server, Web server, and gateway through the optical fiber communication network or wireless public network Both the server and the database server are connected to the management terminal:

The intelligent low-voltage management master station system receives and further analyzes and processes the data of the intelligent low-voltage distribution box and its power users in the simulated intelligent distribution station area, regularly saves and statistically analyzes the data, realizes load warning, line loss analysis, and equipment defect Management, fault alarm, voltage monitoring, power facility protection, and three-phase unbalance monitoring functions;

On the one hand, it measures the power operation data of the distribution transformer by simulating the intelligent distribution station area, and at the same time dynamically compensates the reactive power, eliminates harmonic distortion, controls the voltage asymmetry of each phase, and eliminates voltage fluctuations and flickers, so as to improve the reliability of power supply and power consumption. quality; on the other hand, as a concentrator, it collects the smart energy meter data of electric power users, and forwards the data to the intelligent low-voltage management master station system after being centralized;

The smart energy meter of the low-voltage power user collects the power consumption information data of each user and sends it to the analog smart distribution station area.

Compared with the prior art, the utility model has the remarkable advantages as follows: (1) the purpose of verification and publicity can be achieved by carrying out popularization and application trials in the power system vocational skill training base; (3) Improving the on-site installation, operation and maintenance skills of rural network marketing and distribution operators.

Description of drawings

Fig. 1 is a structural diagram of the low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the rural power grid of the utility model.

Fig. 2 is a structural diagram of the simulated intelligent distribution station area in the utility model.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

The low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the rural power grid uses information technology to establish the topological relationship between the power grid equipment and the basic data of the power customer, and forms an integrated data model of station-line-transformer-household. The construction runs through An integrated information platform for marketing and distribution in the whole process of customer service, focusing on the integration of marketing management information system, distribution network production management information system, distribution network engineering management information system, metering automation system, dispatching automation system, and gradually integrating distribution network planning system according to the actual situation , the relevant data of the distribution network automation system, realize the application function of the integrated collaborative operation of distribution network planning, construction, operation and marketing services, standardize and unify the collaborative operation of various professions, comprehensively improve the reliability of power supply, and continuously improve customer service levels.

The practical training system of the utility model is installed in the rural power grid in the power supply area of the State Grid Corporation of China with an AC frequency of 50Hz and a rated voltage of 400V or below. Terminal master station system and other related design regulations and specifications. The training system integrates metering, measurement, power consumption information collection, control and protection in the intelligent low-voltage distribution box of the rural power grid by simulating the outdoor low-voltage distribution box at the transformer end with a capacity of 400kVA and below and its outgoing line to simulate the operating line of the user. , Power distribution, reactive power compensation and filtering and other functional units are upgraded to meet the training needs of rural network marketing and distribution personnel for the installation, commissioning, and maintenance of rural network intelligent low-voltage station systems.

Combined with Figure 1, the utility model is based on the low-voltage station area simulation training system of the intelligent low-voltage distribution box of the rural power grid, including the intelligent low-voltage management master station system in the training room, the simulated intelligent distribution station area outside the training room and the low-voltage station area. Smart energy meters for power users, wherein the intelligent low-voltage management master station system includes data storage servers, data processing servers, front-end servers, Web servers, gateway servers, database servers and management terminals; the smart energy meters are connected to analog smart The distribution station area, the analog intelligent distribution station area is connected to the intelligent low-voltage management master station system through the optical fiber communication network or the wireless public network, and the data storage server, data processing server, front server, Web server, gateway server, and database server are all connected Enter the management terminal:

The intelligent low-voltage management master station system receives and further analyzes and processes the data of the intelligent low-voltage distribution box and its power users in the simulated intelligent distribution station area, regularly saves and statistically analyzes the data, realizes load warning, line loss analysis, and equipment defect Management, fault alarm, voltage monitoring, power facility protection, and three-phase unbalance monitoring functions;

On the one hand, it measures the power operation data of the distribution transformer by simulating the intelligent distribution station area, and at the same time dynamically compensates the reactive power, eliminates harmonic distortion, controls the voltage asymmetry of each phase, and eliminates voltage fluctuations and flickers, so as to improve the reliability of power supply and power consumption. quality; on the other hand, as a concentrator, it collects the smart energy meter data of electric power users, and forwards the data to the intelligent low-voltage management master station system after being centralized;

The smart energy meter of the low-voltage power user collects the power consumption information data of each user and sends it to the analog smart distribution station area.

The Web server in the intelligent low-voltage management master station system is respectively connected with the gateway server and the database server, and the Web server can directly obtain data from the database server to form a web page or obtain the required data format web page by applying to the data processing server . There are two database servers in the intelligent low-voltage management master station system, and the database adopts automatic backup technology, and the two database servers are hot standby for each other to ensure the normal operation of system data processing.

With reference to Figure 2, the simulated intelligent distribution station includes high-voltage incoming lines, transformers, analog voltage sources, metering transformers, measuring transformers, the first to fifth fault simulators, the first to fourth virtual load analog current sources, the first One to four outgoing line switches, intelligent electric energy meters, three-phase intelligent electric energy meters, single-phase intelligent electric energy meters, reactive power compensation controllers and intelligent distribution transformer terminals for rural power grids. The high-voltage incoming lines are connected to metering transformers through transformers, and the analog voltage The source is connected to the metering transformer, and the metering transformer is connected to the measuring transformer through the first fault simulator, the first dummy load simulation current source, and the second fault simulator in turn, and the smart energy meter and the measuring transformer are connected to the metering transformer , the metering transformer is connected to the intelligent distribution transformer terminal of the rural power grid, and the first to fourth outgoing line switches are respectively connected to the measuring transformer. The first outgoing line switch passes through the three-phase intelligent electric energy meter, the third fault simulator and the second virtual load simulation current The second outlet switch is connected to the third dummy load simulation current source through the single-phase smart energy meter and the fourth fault simulator in turn, and the fourth outlet switch is connected to the reactive power compensation controller, the fifth fault simulator and the fourth The virtual load analog current source is connected, and the smart energy meter, three-phase smart energy meter, and single-phase smart energy meter are connected through RS485. The intelligent distribution transformer terminal of the rural power grid adopts the IDTT-BGT615 intelligent distribution transformer terminal of Jiangsu Huaiyin Suyi Electric Appliance Co., Ltd.

Example 1

In this embodiment, the construction of the simulation training system is based on the intelligent low-voltage distribution box of the rural power grid as the basic unit, and the real-time monitoring system simulation of power parameter measurement simulation, control and management is carried out for the matching distribution transformer and low-voltage power users. .

1. Master station system:

The first layer is the intelligent low-voltage management master station system located in the power supply station, which is mainly composed of data storage server, data processing server, front-end server, Web server, gateway server, etc. The data of the device and its power users will be further analyzed and processed, regularly saved and statistically analyzed. Each monitoring point transmits monitoring data and statistical results to the master station regularly, and the master station can also call the distribution transformer monitoring data on any monitoring point and all user table data on the low-voltage side of the distribution transformer.

According to the actual situation, build an independent intelligent low-voltage management master station in the training room, and complete the data monitoring and daily management of the simulated distribution boxes and simulated low-voltage power distribution users inside and outside the training room. Realize functions such as load warning, line loss analysis, equipment defect management, fault alarm, voltage monitoring, power facility protection, and three-phase unbalance monitoring.

The master station is the comprehensive management organization of the entire analog distribution station area. In addition to the real-time monitoring function, it also has more advanced analysis and management software to summarize the uploaded data in the station area, so as to make a comprehensive evaluation of the overall power grid operation status. Including load management, line loss management, power quality management, leakage protection management, distributed power access, rural residents' electricity information interaction, etc. Its main technical features are as follows:

1) Generation, reorganization and expansion of application functions such as processing and statistics of all data in the analog distribution station area, and related reports and charts. It has a data alarm function, and when the data indicators collected from the intelligent distribution transformer terminal are found to be abnormal, it will be marked (prompted) in the report and chart.

2) Responsible for accepting the request from the web server, generating a data format conforming to the request format, and transmitting the result information to the gateway server, so that the staff of different departments can view it through WEB.

3) It has the function of rights management, which can assign different rights to different users, so as to limit the user's access rights.

4) Provide web services, respectively establish connections with the gateway server and the database server, and obtain data directly from the database server to form a webpage or apply to the data processing server to obtain the required data format webpage. Users can browse the webpage through the web browser at any place and at any time, and access the web-based data query, data analysis, report display, curve display, alarm information, equipment status, site distribution, national standard query, record query issued by the web server You can keep abreast of the power quality status on the specified date in a timely manner, and you can download report statistics in the form of Word, Excel, text, and charts at any time.

5) Responsible for database management, operation and maintenance, data backup, accident recovery, and data optimization. Save all the data transmitted from the monitoring sub-station and the result data processed by the data processing server, and manage and store these corresponding data in a unified manner.

6) The database adopts automatic backup technology, and the system configures two database servers as hot standby for each other to ensure the normal progress of system data processing. When recovering from an accident, first restore the database backup file and then restore the data log record backup to ensure data integrity, security and consistency. The functions of the main station of the intelligent low-voltage power distribution simulation management system in the training room are shown in Table 1.

Table 1 List of functions of the master station of the intelligent low-voltage power distribution simulation management system in the training room

2. Simulated intelligent power distribution (box) area:

The second layer is the intelligent low-voltage distribution box at the simulated distribution transformer (box) station area. The intelligent distribution (box) station area management terminal is set up. On the one hand, it measures the power operation data of the distribution transformer, and at the same time performs dynamic compensation without power, eliminate harmonic distortion, control the voltage asymmetry of each phase, eliminate voltage fluctuations and flicker, improve power supply reliability and power quality; station forwarding. It is planned to carry out the design and development of two simulation demonstration station areas, and set up functions such as distribution transformer monitoring, electric energy meter data collection, dynamic compensation of reactive power, elimination of harmonic distortion, control of voltage asymmetry of each phase, and elimination of voltage fluctuations and flicker. The entire low-voltage distribution station area simulation system simulates the operating environment of a certain low-voltage distribution station area, simulates the operating load changes of the station area by simulating the load power supply, and realizes the measurement circuit of the electric energy meter, the exchange circuit, the secondary control circuit, and the capacitor through program control. Fault simulation such as switching circuits provides a training and assessment environment for rural power distribution, operation, and maintenance personnel. Table 2 shows the functions of the simulated smart distribution box management terminal.

Table 2 List of functions of the analog intelligent distribution box management terminal

3. Smart energy meter:

The third layer is the smart energy meter (including communication function) of the power user, which collects the power consumption information data of each user and sends it to the concentrator.

Simultaneously build communication channels, build EPON optical fiber communication channels in the analog station area to meet the fast transmission function of large-capacity data, and build GPRS wireless communication channels in the remaining analog distribution station areas to realize real-time monitoring of distribution station areas.

In this embodiment, the intelligent low-voltage management master station system in the training room realizes distribution parameter monitoring, metering, power consumption information collection, communication, dynamic reactive power compensation control, harmonic suppression and three-phase non-linearity for the simulated intelligent distribution station area. Balance governance, realize the application function of real-time monitoring and early warning of electricity safety and power facility protection.

Claims (5)

1. A low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the rural power network, characterized in that it includes an intelligent low-voltage management master station system in the training room and an analog intelligent distribution station area outside the training room and Smart energy meters for low-voltage power users, wherein the intelligent low-voltage management master station system includes data storage servers, data processing servers, front-end servers, Web servers, gateway servers, database servers, and management terminals; the smart energy meters are connected to analog The intelligent distribution station area, the analog intelligent distribution station area is connected to the intelligent low-voltage management master station system through the optical fiber communication network or the wireless public network, and the data storage server, data processing server, front server, Web server, gateway server, and database server are all Access management terminal: The intelligent low-voltage management master station system receives and further analyzes and processes the data of the intelligent low-voltage distribution box and its power users in the simulated intelligent distribution station area, regularly saves and statistically analyzes the data, realizes load warning, line loss analysis, and equipment defect Management, fault alarm, voltage monitoring, power facility protection, and three-phase unbalance monitoring functions; Simulate the intelligent distribution station area, on the one hand, measure the power operation data of the distribution transformer, and at the same time dynamically compensate the reactive power, eliminate harmonic distortion, control the voltage asymmetry of each phase, and eliminate voltage fluctuation and flicker, so as to improve the reliability of power supply and Power quality; on the other hand, as a concentrator, it collects the data of the smart energy meter of the power user, centralizes the data and forwards it to the intelligent low-voltage management master station system; The smart energy meter of the low-voltage power user collects the power consumption information data of each user and sends it to the analog smart distribution station area. 2. the low-voltage platform area simulation training system based on the intelligent low-voltage distribution box of rural power network according to claim 1, is characterized in that, the Web server in the intelligent low-voltage management master station system is connected with gateway server, database respectively Server connection, the Web server can directly obtain data from the database server to form a web page or obtain the required data format web page by applying to the data processing server. 3. The low-voltage platform area simulation training system based on the intelligent low-voltage distribution box of rural power network according to claim 1, wherein there are 2 database servers in the intelligent low-voltage management master station system, and the database adopts With automatic backup technology, the two database servers serve as hot standby for each other to ensure the normal progress of system data processing. 4. The low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the rural network according to claim 1, wherein the simulated intelligent distribution station area includes a high-voltage incoming line, a transformer, an analog voltage source, Metering transformers, measuring transformers, first to fifth fault simulators, first to fourth dummy load analog current sources, first to fourth outlet switches, smart energy meters, three-phase smart energy meters, single-phase smart energy meters, none The power compensation controller and the intelligent distribution transformer terminal of the rural power grid, the high-voltage incoming line is connected to the metering transformer through the transformer, the analog voltage source is connected to the metering transformer, and the metering transformer passes through the first fault simulator and the first dummy load simulation in turn The current source and the second fault simulator are connected to the measurement transformer, the smart energy meter and the measurement transformer are connected to the measurement transformer, the measurement transformer is connected to the intelligent distribution transformer terminal of the rural power grid, and the first to fourth outlet switches are respectively connected to the measurement transformer. The first outlet switch is connected to the second dummy load analog current source through the three-phase smart energy meter and the third fault simulator in turn, and the second outlet switch is connected through the single-phase smart energy meter, the fourth fault simulator and the third The virtual load analog current source is connected, the fourth outlet switch is connected to the fourth virtual load analog current source through the reactive power compensation controller, the fifth fault simulator, and the smart energy meter, three-phase intelligent energy meter, and single-phase intelligent energy meter. They are connected via RS485. 5. The low-voltage station area simulation training system based on the intelligent low-voltage distribution box of the rural network according to claim 4, wherein the intelligent distribution transformer terminal of the rural network adopts the IDTT- BGT615 intelligent distribution transformer terminal.