How to build an intelligent gas system based on GIS technology?
The urban gas pipeline network is a network with intertwined roots. According to these networks, gas companies deliver gas from the gas source to customers. The gas field is related to the food, clothing, housing and transportation of every household and the daily operation of every field, so its necessity is self-evident.
Geographic information system is a very critical spatial data system, which can complete the collection, storage, management, calculation, analysis, display and description of the relevant regional distribution data information.
According to the application of GIS technology, the spatial layout characteristics of urban gas pipeline network can reasonably complete the management and application of gas pipeline data information.
1、 GIS informatization development goal
The GIS informatization of gas pipeline network is based on the query of gas pipeline network database. According to the creation of data information, the system is upgraded, and the production scheduling, hotline, online customer service, safety inspection and other information contents are integrated to provide a reliable foundation and service project for the overall planning, design scheme, engineering construction, operation and evaluation of gas pipeline network, Improve the business process management level and operation efficiency of gas pipeline network.
The overall objectives of gas pipeline GIS information development and design include:
(1) Complete the standardized management and unified application of gas pipeline and related business process data information;
(2) Establish the data and information upgrading system of gas pipeline network;
(3) Complete the informatization management method of gas pipeline operation and maintenance management;
(4) According to the basic construction of GIS integrated management system, connect the association of relevant application systems.
2、 GIS information development and design concept of gas pipeline network
GIS informatization of gas pipeline network is to sort out and create association between spatial data and attribute data of pipeline network, generate comprehensive database query of gas pipeline network, complete standardized management and unified application of data information of gas pipeline network, basic spatial data and attribute data of pipeline network business process, and dynamically update the system according to the created data information of gas pipeline, Ensure the status of pipeline database query. According to the characteristics and requirements of different business processes, three operating system architectures can be selected: mobile client/network server (C/S), computer browser/network server (B/S), and mobile terminal/network server (M/S).
3、 Data processing method for building database and upgrading gas pipeline network
The key problem of GIS informatization of gas companies is data information, including pipe network data information, basic spatial data information of large cities and business process attribute data. The vitality of gas GIS system depends on the continuous upgrading of data information. Therefore, the establishment and upgrading of gas pipeline network data processing can be said to be the success or failure of GIS system infrastructure construction.
1. Database analysis of gas pipeline network
For various reasons, at this stage, many companies manage according to design drawings, as built drawings or plans. Most of the materials ten years ago were paper versions, and most of the materials in the past ten years were PDF files in AUTOCAD format. The part lacking data information can be obtained by physical exploration, while the current CAD data information can be obtained by transformation.
Urban basic spatial data is a key component of gas GIS system. The spread of gas pipeline network needs to take the urban basic spatial data as the background map to carry out lean management. Gas pipeline business process attribute data includes facility information, gas customer information, historical time safety accident handling, scada historical time data monitoring and line inspection record report and other data information.
2. Prepare pipe network data information in advance
The process of preparing pipe network data information in advance includes the analysis and sorting of existing data, on-site collection of data information lacking, data sorting and inspection, data information entering the warehouse, etc. The analysis and sorting of existing data is mainly to analyze the currently valuable spatial data and attribute data of pipe networks. And sort out, transform and enter the warehouse for valuable data information. The missing or inaccurate and imprecise pipe network data information can be determined according to the on-site filling collection or verification methods. For the accurate measurement of gas pipe network and underground equipment, it is mainly to accurately measure the plan, elevation and relevant characteristics of gas pipe network and underground facilities. The integrated method of high-precision GPS equipment and underground pipeline detector can be used for measurement.
3. Gas pipeline network data standard
After the establishment of gas pipeline data information, the indoor space factor level and module division specification of gas pipeline network shall be formulated according to the spatial geometric characteristics of specific contour points, lines and surfaces, contour characteristics and the correlation between contour lines. In addition, in order to unify the characteristic structure of each pipe network coating, it is necessary to formulate the characteristic structure specification of gas pipe network. In addition to the above basic specifications, technical specifications for determining and completing gas pipeline survey, technical specifications for drawing gas pipeline drawings, metadata standards for gas pipelines, and technical specifications for construction supervision of gas pipeline inspection projects need to be formulated.
4. Building database of gas pipeline network data information
The comprehensive database query of gas pipeline network is the basis of the open service project of GIS information content system. According to the collection, sorting, production and processing of various natural geographical spatial data resources, a unified gas network comprehensive database query is established to complete the standardized management and unified application of gas network data information, basic spatial data and gas network business process attribute data. During the construction of pipeline network data processing method, according to the gas pipeline network data standard, the seamless splicing hierarchical management method of gas pipeline network data information is completed.
