MAPINFO-based grid GIS management information system
Power industry background
In the grid information management information system, a very important part is the management of power facilities. Electricity facilities have significant characteristics: their quantity, with obvious geographical characteristics, and most of them are underground pipe networks, there are more than 30 kinds of pipelines, and they have a very complex power plant pipe network facility system. With the construction and development of the power plant, these pipeline network lines continue to increase, coverage areas continue to expand, so that the system is getting bigger and bigger and complex is getting higher and higher.
For such a huge system management, if there is still manual management, as a manual text file and graphical files, data and drawings are separated, data and drawings are updated, and the consistency is difficult to guarantee; Manual data retrieval, due to large data volume, information dispersion, the search efficiency is hard to comprehensively analyze according to the stored data; with the borrowing and modification of the drawings, the drawings are easily damaged, the cost of repair is higher. Although there are now some grid MIS systems to solve this problem to some extent, they all have a common defect - data cannot reflect geographic information, and cannot visually display the geographic characteristics between the target power station or the power station.
In order to facilitate the management of the power plant to modernize, the advanced means must be used to replace manual management. Use GIS to enable energy management and construction of the power plant to achieve efficient, reasonable and scientific, effectively improve the work efficiency and economic benefits of the power plant.
GIS system introduction
Geographic Information System (GIS, GEOGRAPHIC Information System) is a computer-based tool that makes pictures and analysis of things and things that have occurred on Earth. GIS technology puts this unique visual effect and geographical analysis Function is integrated with a general database operation (such as query and statistical analysis). This ability distinguishes GIS to distinguish between other information systems, enabling them to explain events, forecast results, planning strategies in public and individuals, and enterprises and institutions. It has a wide range of use.
System of overall architecture
In response to the demand for the geographic information management system of Guangzhou New Power Grid, the implementation of the system is established.
1. System goal
The grid geographic information system mainly based on the equipment and production management of the power plant as the background, based on grassroots business management information, to complete the integrated grid management of modern grids, to meet the information needs of management personnel and engineering technicians at all levels. This system mainly implements the standardization, automation management of grid equipment, and has certain assistance decision analysis functions, including the following aspects:
1. Incorporate the drawings and attribute data of the equipment facility into computer management. Including grid wiring drawings, such as drawing, modification, query, etc .; device management, such as equipment query, device's attribute data modification, equipment maintenance management, etc.
Use real-time data feedback and attribute data analysis to make the system have certain auxiliary decision functions. If the data returned by the power stations, it can provide system warning, automatic control, assistance decision making function when sudden events occur. The system uses intranet technology to establish a dual interface of client / server (Client / Server) and browser / server (Browser / Server), and complete the corresponding function according to different services needs and data processing, implement the power plant geographic information system Open and data sharing. The system requires high reliability, good maintenance, security, and expansibility.
Friendly interface, easy to use.
2. System architecture design
In the design of the system structure, the architecture combined with the client / server structure and the browser / server (Browser / Server) structure. The client / server structure is used by privileges with permissions, and the privileges with permissions can modify and manage drawings and equipment data on any of the clients, and the drawings and data are automatically transmitted. On the server. The browser / server structure is used for non-professional use. For general employees within the enterprise, as long as they can access the Internet, they can be reviewed through the browser and the data related to the equipment. As shown below: (Figure 1)
3. System platform selection
The system platform selection includes a selection of hardware platforms and software platforms.
Hardware platform
1. Server: Pentium Pro 200, a high performance microcomputer of memory 128m.
Client: Pentium 166 (memory 64m) PC or more. Enter the device: Digitalizer, scanner. Output device: Plotter, printer.
software platform
1. Operating system: The server side uses Windows NT Server, the client uses Windows NT Workstation or Win98.
Database Management System: Install SQL Server on the server side. Browser: Adoption IE6.0. Development Platform: Select MapInfo Professional 4.5 or higher as platform software. Select Visual Basic 6.0 on software development, which supports the processing of MapInfo, supports network database design, supports development of web servers.
4. System realization
The system function block diagram of the client / server structure is as follows:
Domain
Equipment
Drawings
( figure 2 )
The main function:
1. System Management: Includes "User Management", "Password Modification", "Page Setup", "Drawings" and "Exit" feature.
Edit Action: Includes replication, cut, paste, clear, undo operation. Drawings Management: Implement query, drawings, drawings, layers, layers, and maintenance features for device properties. Map Action: Enlarge, shrink, roam; options, automatic labels; window positioning, and viewing the entire layer. Drawing Tools: including drawing straight lines, folding, arcs, symbols, text, polygons; shaping, merges to selected objects; also provides selection of line style, regional styles, symbolic style, and text style. Equipment management: including device queries, attribute modifications, equipment maintenance, and maintenance query functions. Where the device query is the properties data of all devices on a layer; the property modification refers to the properties data of a selected device; when repairing the device, use the equipment repair module to repair the maintenance equipment, maintenance Date and person in charge, etc., the maintenance query refers to the query of all the maintenance records of all layers, which provides a combined query function in this module. Equipment Picture: Including image management and pictures View two features. Among them, the picture management includes an increase, modification, deletion, query and browsing feature of the picture. Before adding pictures to a device, you need to prepare the image file, you can generate the BMP file using a digital camera or scanner, and use the image to add functionality to the directory specified in the computer's external memory. Figure file is added to this system. In any case, as long as one device is selected, you can use the picture view function to display the image of this device (as long as the picture exists). Assisted decision: When there is an emergency, real-time data has caused sudden changes in the equipment, and the auxiliary decision system will issue an instruction for emergency adjustment or alert. Maximize the loss of grid.
5. Power plant GIS development prospects
With the development of information visualization, Internet technology, and multimedia technology, GIS technology is gradually maturing, which gives a variety of different users to provide a relatively good solution, making the GIS applications rapidly expanded. As the power industry in the pillar industry, due to its wide range of geographical distribution, it can be combined with GIS technology, and integrate large amounts of geographic data and attribute data in management to make the power system information. Chemical management is more modern. At present, GIS can apply in the power system in the following aspects: transmission distribution management system, power management, power plant equipment and drawings management, and management of grid planning. For different GIS software companies, it is aimed at the characteristics of the power industry, and continuously providing more complete technical solutions, making the application of GIS technology in the power system, making the information development of the power industry more step by step.
