The difficulties in optimizing the steady-state gas network are the complex structure and big scale of the network,high nonlinearities of the objective and the constraints.In this paper,we formulate the steady-state gas network optimization as a mixed integer nonlinear programming model.Then based on the techniques of network reduction and linearization,we develop a new algorithm for the problem.Numerical results on an instance of the western natural gas network of China show that the proposed algorithm is promising.%天然气稳态运行优化问题的难点在于网络结构复杂、规模大、目标函数及约束高度非线性.针对其混合整数非线性规划模型,基于网络约简和线性化技术,建立了线性近似模型,并提出一种新的求解算法.将新算法用于优化我国西部天然气管网系统,结果表明所提算法是有效的.
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