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为了研究压气站的最优运行费用及其变化规律,基于BWRS方程编写了某压气站最优运行费用计算软件,其采用枚举法依次计算出某固定工况下所有压缩机不同分配的运行费用,并通过比选得出该工况下的最优运行费用。以构建的某管网系统的压气站(首站)为例,计算了其在不同工况(气源来气压力、下游各管道进气压力及气源来气总量)下的最优运行费用,并总结其变化规律:下游中压管道进气压力值(往复压缩机出口压力)是一个临界点,当来气压力不小于该值时,最优运行费用会有明显降低。此外,该站取得最优运行费用时,中压管道均处于满输状态,与边界条件变化无关。
In order to study the optimum operation cost and its changing rule of the compressor station, a calculation software of the optimal operation cost of a compressor station was compiled based on the BWRS equation. The enumeration method was used to calculate the operating costs of all the compressors under different operating conditions , And through the comparison and selection of the operating conditions under the optimal operating costs. Taking the construction of a gas station (head station) of a pipe network system as an example, the optimal operation under different operating conditions (gas source pressure, inlet pressure of each downstream pipe and total gas source) Cost, and summarizes its variation: the downstream pressure pipeline inlet pressure (reciprocating compressor outlet pressure) is a critical point, when the gas pressure is not less than this value, the optimal operating costs will be significantly reduced. In addition, when the station to obtain optimal operating costs, medium pressure pipelines are in a state of full lose, has nothing to do with the boundary conditions change.