Large parallel natural gas pipeline network optimization operation model and solving method

Abstract

The invention discloses a large parallel natural gas pipeline network optimization operation model and a solving method. The solving method comprises the following steps: step 1, constructing a compressor model and a pipeline model; 2, taking the minimum energy consumption sum of compressor units along the parallel pipe network as a target function, the total number of the compressor stations being n, and the total energy consumption of the whole long-distance pipeline being the sum of the energy consumption of the stations, and setting an optimization variable as Xi; 3, determining constraint conditions; According to the invention, the decision variables are introduced into the connection state between the pipelines in the established optimized operation model, the actual operation scheme is better met, and simulation is more accurate; the compressor model and the pipeline model are combined, so that the pressure and temperature change along the pipeline can be calculated; by adopting the phasor particle swarm algorithm, the convergence speed is high, and the number of times of obtaining the optimal scheme is maximum; the optimal scheme obtained through calculation is smaller than an actual scheme in the aspects of gas consumption, power consumption and total production energy consumption, and the total production energy consumption can be reduced by 26.62%.

Description

technical field [0001] The invention relates to the field of optimal operation of parallel natural gas pipelines, in particular to a large-scale parallel natural gas pipeline network optimal operation model and a solution method. Background technique [0002] Natural gas is a clean and high-quality energy source. At present, there are abundant natural gas resources in the world, and there is a resource base for long-term accelerated development. In recent years, the use and production of natural gas have shown a trend of rapid growth all over the world. It is estimated that by 2030, China's average natural gas demand will reach 436.327 billion m 3 . Therefore, in order to meet the demand for natural gas, pipeline expansion is unstoppable. With the continuous expansion of the natural gas pipeline network, the complex structure of the pipeline network continues to increase. Parallel pipe network is one of the more complex pipe networks. [0003] Taking a parallel pipe net...

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Problems solved by technology

A particular optimization algorithm may show good performance for some problems, but poor performance for others

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