نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری گروه سازه های آبی دانشگاه تهران و عضو هیات علمی مرکز تحقیقات،آموزش و ترویج کشاورزی استان قزوین

2 استادیار گروه سازه های آبی. پردیس کشاورزی و منابع طبیعی دانشگاه تهران

چکیده

تغییرات نیاز آبی در دورۀ رشد گیاه، اختلاف ارتفاع در نقاط آبگیری،‌ تطابق ­نداشتن ساعات آبیاری، تغییر الگوی کشت و عوامل محیطی دیگر باعث می­شود تا عملکرد ایستگاه­های پمپاژ متأثر از عوامل دینامیکی متعدد باشد. از این‌رو، کارکرد ایستگاه­های پمپاژ عموماً دینامیکی است یعنی وابسته به زمان است. در این تحقیق، با توجه به قابلیت­های سامانه‌های پمپاژ دور­متغیر در تطبیق با شرایط مختلف بهره‌برداری، رویکرد به استفاده از پمپ­های دور­متغیر در یک کشت و صنعت 85 هکتاری زیتون واقع در استان قزوین بررسی شد. در این راستا، مدل دینامیکی سامانۀ مورد مطالعه با استفاده از نرم‌افزار MATLAB/SIMULINK ارائه شده است. نتایج حاصل از شبیه‌سازی 5 سناریوی بهره‌برداری حاکی از کاهش مصرف انرژی به میزان 18 درصد در حالت کنترل دور­متغیر، نسبت به حالت دور­ثابت است. آزمون تحلیل حساسیت مدل نشان می­دهد که مهم‌ترین عامل اثرگذار بر مصرف انرژی در سامانۀ آبیاری مورد مطالعه، میزان فشار خروجی در محل ایستگاه پمپاژ است.  

کلیدواژه‌ها

عنوان مقاله [English]

Dynamic Modeling of Variable Speed Pumps in Pressurized Irrigation System Considering Energy Consumption Analysis (Case Study: Ashrafieh Agro-Industry Irrigation System)

نویسنده [English]

  • afshin uossef gomrokchi 1

1 qazvin agriculture research center

چکیده [English]

Variable water requirement in growing season, altitude difference in hydrant points, incompatibility in irrigation hours, cropping pattern alternation as well as other environmental factors are conducive to dynamical factors to influence the operation of pumping stations. Thus, pumping stations have dynamic or time-dependent operation. In this study, we examined operation of variable speed pumps in an olive plantation of 85 ha in Ashrafiyeh agro-industry complex located in Qazvin province, considering various utilizing condition.  In this regard, the dynamic model of the pumping station is developed and presented using MATLAB/SIMULINK software. The results inferred from five operation scenario's simulations represent 18 percent reduction in energy consumption of controlled pumping station with variable speed mode compared to constant speed mode operation. Moreover, the analysis of the results from hydraulic sensitivity index in variable speed pumps indicated that the highest amount of model sensitivity to pressure difference occurs during utilization time.
 
Key Words: Best Efficiency Point, Modeling, Pumping Station, Sensitivity Analysis

کلیدواژه‌ها [English]

  • Best Efficiency Point
  • modeling
  • Pumping Station
  • Sensitivity analysis
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