Current Situation and Prospect of power GIS

The power system is developing towards a high degree of informatization and automation, and the scale of the power grid is expanding. Therefore, it is necessary to manage huge power equipment and facilities data, user data, and planning data. To some extent, scientific decision-making depends on the amount of information held by decision makers. Power generation, substation, and transmission systems are complex systems that contain a large amount of information. GIS can integrate the relevant information to the maximum extent, so as to provide a diversified decision-making basis for power system decision makers. The development of grid interconnection technology leads to the expansion of power system regions. It involves many associated factors in planning site selection and economic operation, such as resources, population, economic development, and social activities, they are all related to the geographic system. Geographic information is the main line of power system management, which can vividly describe the system and effectively organize data information.
 
　　 1. Current Situation Analysis of power GIS
 
1.1 Application Status quo
 
The development of power GIS application in foreign countries has gone through the "cad + Database" and "Traditional GIS application" stages. In the early 1990s S, it entered the "AM/FM/GIS application" stage. The establishment of a "Digital Power Grid" and "collaborative working environment" power GIS system, which is characteristic of GPS, has become an electric power enterprise in developed countries. In order to enhance its own competitiveness (reduce production costs and improve service levels) an essential tool for restructuring production and operation processes and improving the scientific management level of grid operation.
String 7
At the early stage of application of AM/FM/GIS in China, AM/FM is a specialized information technology in the Pui field and has become the basis for various automation of power supply and distribution systems. GIS is used to describe and manage the parameter attributes of various power equipment and the operation control information in the grid based on geographical information. In terms of going offline, the main applications of AM/FM/GIS include equipment management system, electricity management system, and planning and design system, AM/FM/GIS is mainly used in combination with SCADA systems to exchange operation data and graphic data to provide accurate grid geographic information for dispatchers. In addition, it can also be used as a Complaint Hotline System for DMS, quickly and accurately determine the fault location, current location of the repair team, and dispatch repair personnel in time based on the user's fault complaint phone number to shorten the power outage time.
 
Currently, GIS software for the power industry mainly includes ESRI, Mapinfo, smallworld, sicad, and grow in China.
 
1.2 Problems
 
1.2.1 limitations of data structures General GIS platform software considers the intersection of massive polygon data, polygon attribute superposition, assignment, and other issues (basic operations for implementing the overlay function ), therefore, the strengthening technology is adopted in the core data structure. In grid gis applications, there is no need to perform cross operations on a large number of polygon, therefore, the topology analysis function of the General GIS platform software needs to be improved.
 
1.2.2 GIS basic platform selection problems power GIS applications are directly integrated into modern power production and operation activities. A brand new management tool for digitalized production and operation information, from the perspective of application, from the underlying software platform structure to advanced practical functions, it will be based on the real-world power grid production and operation management methods. Different There is a big difference. Currently, the commercial GIS platform does not require advanced network analysis, but has invested too much money to meet the needs of practical applications. When selecting a GIS platform, power enterprises should consider the management of equipment and facilities, the advanced analysis of power grid networks, and the large number of users in the power sector, capital allocation, and development workload, it is truly practical for power GIS. String 5

 
1.2.3 lack of standards and application specifications for power GIS
 
The application demand of electric power GIS Promotes Rapid market development, and the formulation of corresponding technical standards and application specifications fails to be completed in a timely manner. This "Advanced Market Development. Technical standards are lagging behind, which hinders the application and promotion of power GIS.
 
The standardization of power GIS can be understood at two levels. The first is the narrow standardization, which includes data, data exchange, database conversion, graphics, software and other standards, it mainly includes two aspects: spatial data standards and information technology standards. Second, there is a broad range of standardization content, including algorithm and industry standards. There are four main categories: application standards, data standards, information technology standards and industry standards.
 
Application standards help save costs, improve efficiency and facilitate application, and greatly improve the scalability, operability, and scalability of the power GIS system.
 
　　2 prospect of power GIS
 
2.1 GIS application in Distribution Network Planning
 
Using GIS for distribution network planning can achieve visualization, automation, and geographical Graphics of the distribution network planning; make the planning more interactive; not only can the planning network scheme be obtained, in addition, the geographic wiring diagram of the network planning scheme can be obtained directly. In addition, the GIS network analysis function is introduced into the planning scheme to make the planning process more effective and the planning result more accurate. String 4
 
2.2 Further application of WebGIS Technology
 
The wide range of WebGIS access, platform independence, low system costs, simpler operations, and other advantages make WebGIS more widely used.
 
2.3 deepening GIS Application
 
In GIS, the nameplate information, parameter information, operation information, maintenance information, and other data of various equipment accounts of the distribution network are centrally managed, the real-time information of the feeder automation system, the real-time information of the scheduling automation system, the real-time information of the distribution transformer, and the real-time information of the low-voltage users are connected to the system, it can realize short-circuit current calculation, maximum impedance calculation, load forecasting of each distribution line, load forecasting of system load, and distribution network security analysis in the distribution network management system, at the same time, the GIS system can automatically analyze the powerful topology and generate functions to calculate the impact scope, dynamic impedance, and provide the distribution network load transfer scheme, the GIS system can also be combined with the GPS satellite positioning system to reflect the specific location of the repair vehicle or repair personnel on the electronic map in real time, the personnel or vehicles closest to the fault point can be notified to be promptly dispatched to the site for repair during emergency repairs, which provides a technical means for high-quality electricity services.
 
　　Conclusion
 
In the automation of power system information, GIS can connect different departments and jobs into an organic whole by means of network technology to share information with certain permissions. At the same time, the high integration of information is conducive to scientific decision-making. In short, to achieve scientific and efficient management and utilization of Power Information, GIS for the power industry must be available.