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在省区范围内有必要建设天然气区域干管网络(区域管网,或称省网)。区域管网上连输气干线,下连城镇输配管网,运行工况呈现多样性。区域管网在管网设施结构、功能和建设、运营方面应有独立性,其供气可靠性应主要依赖多气源点供气,完整的组成需要包含储气设施。区域管网在结构和运营方面需要与干线管网整合。区域管网规划有别于长输管道或城镇管网,区域管网的建设需要结合气源发展条件、用气市场预测、用气负荷分布和地理特征等并进行工况分析。
It is necessary to build a natural gas regional main pipe network (regional pipe network, or provincial network) within the scope of the province. Regional gas pipelines with gas transmission lines, even under the town pipe network, operating conditions showed diversity. The regional pipe network should have independence in the structure, function, construction and operation of the pipe network facilities. The reliability of gas supply should mainly depend on the supply of multi-gas sources, and the complete composition needs to include gas storage facilities. The regional pipe network needs to be integrated with the main pipe network in terms of structure and operation. Regional pipe network planning is different from long-distance pipelines or urban pipe network. The construction of regional pipe network needs to combine with the conditions of gas source development, gas market forecast, gas load distribution and geographical features, and analyze the working conditions.