A method of resistance coefficient i-dentification of multi-condition heating pipeline net-work based on differential evolution algorithm is pro-posed.The resistance coefficients of outdoor pipe sec-tion and variable resistance end pipe section are identi-fied first,and the satisfactory value of the resistance co-efficient of outdoor pipe section is determined,and it is used as a known condition to identify the resistance co-efficient of the variable resistance end pipe section a-gain.The actual pipeline network with 14 variable re-sistance end pipe sections is tested and stopped after i-dentifying 17 continuous operating conditions,with an average of 127 identifications per operating condition.The absolute relative error between the calculated flow rate and the observed flow rate of the identification re-sults of the variable resistance end pipe sections is within 0.5％,indicating that this method can obtain high precision identification results.
维普
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