关键词:  font-size: 10.5pt">天然气产业；协调性；标度；优化研究；系统结构

Abstract:  This paper, based on natural gas's system structure characteristic scale, uses non-linear planning to establish natural gas coordination scale and optimization, discusses China's natural gas coordination scale and optimization, and analyzes its rationality and sensitivity, and presents suggestions in optimizing natural gas coordination scale. Natural gas coordination level is good, variable coefficient is poor, month peak coefficient is excellent, urban emergency coefficient is poor, county emergency coefficient is good in 2014. Compared with moderate scale, the optimized natural gas coordination scale rises 0.15 in sensitivity in large scale range, and rises more, up to 0.198 in small scale range, indicating a good anticipation. Natural gas coordination scale is most sensitive in large scale range. This paper proposes the optimized natural gas coordination scale plan be the basis in evaluating China's natural gas industrial development and planning. This optimized plan can not only precisely scale natural gas coordination, but also be of significance in sensitively reflecting natural gas coordination change, which is influenced by natural gas use planning, development and construction.

Key words:  font-size: 10.5pt">natural gas industry, coordination, scale, optimization, system structure