نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی فارغ التصیل رشته مهندسی منابع آب، گروه مهندسی آب، دانشکئه کشاورزی، گروه مهندسی آب
2 گروه مهندسی آب- دانشگاه باهنر کرمان
3 دانشیار گروه علوم و مهندسی آب، دانشکده کشاورزی، دانشگاه شهید باهنر کرما
چکیده
عامل اصلی انتقال آب در شبکههای توزیع آب، اختلاف هد فشاری بین دو نقطه بوده و در صورت افزایش فشار بیش از حد استاندارد، پدیده نامطلوب نشت رخ میدهد. نشت در سیستم آبی از لحاظ اقتصادی، اجتماعی و تأثیرات زیست محیطی مهم میباشد. اهداف تحقیق حاضر شامل تشخیص نقاط هدررفت آب در شبکه توزیع آبرسانی با استفاده از مدل EPANET و روش نروفازی، و مقایسه این دو روش و ارائه روش بهتر جهت تشخیص نقاط هدررفت آب میباشد. در این تحقیق به منظور ردیابی نشت در شبکه توزیع آب شهر محیآباد استان کرمان، روشی مبتنی بر مدلسازی هیدرولیکی و حل معکوس معادلات جریان، جهت پیشبینی محل و میزان نشت موجود در شبکه توزیع آب با استفاده از نرمافزار EPANET و روش نروفازی، با داشتن مقادیر اندازهگیری شده فشار در تعدادی از گرههای شبکه، معرفی شد. نتایج حاکی از آن است که در بهترین معماری انتخاب شده از بین کلیه شبکههای آزمایش شده، ضرایب نشت حاصل از پیشبینی نروفازی نسبت به مقادیر مدلسازی شده EPANET مناسبترین گزینه برای مدلسازی بوده و دارای ضریب همبستگی 984/0 و میانگین خطای پیشبینی MSE، برابر صفر با ریشه میانگین مربعات خطا (RMSE)، 0024/0 لیتر بر ثانیه نشاندهنده دقت پیشبینی مطلوب و قابلیت اطمینان بسیار زیاد شبکه آموزش دیدهاست. روش پیشنهادی با حداقل برداشت اطلاعات هیدرولیکی از نوع فشارها، قابلیت خوبی در پیشبینی محل نشت در شبکه را دارا بوده و همچنین استفاده از روش نروفازی، ساده و کمهزینه بوده علاوه بر آن از دقت مناسبی برخوردار است.
کلیدواژه‌ها
عنوان مقاله [English]
Leakage in the Water Supply Network using EPANET Software and Neurofuzzy Method
نویسندگان [English]
- Fatemeh Ghishinzadeh 1
- Nasrin Sayari 2
- Majid Rahimpour 3
1 Dept. of Irrigation(Water Engineering Group) Faculty of Agriculture Shahid Bahonar Univ. of Kerman Kerman IRAN
2 Nasrin Sayari (Ph.D)Assistant Professor Dept. of Irrigation(Water Engineering Group) Faculty of Agriculture Shahid Bahonar Univ. of Kerman Kerman IRAN
3 Professor Dept. of Irrigation(Water Engineering Group) Faculty of Agriculture Shahid Bahonar Univ. of Kerman Kerman IRAN
چکیده [English]
Water supply networks as a hydraulic system of water transmission and distribution have always been of interest to researchers. The main cause of water transfer in water distribution networks is the pressure head difference between the two points and in case of increasing the standard pressure, the undesirable phenomenon of leakage occurs. Leakage in the irrigation system is economically, socially and environmentally significant. Therefore, leak detection as one of the duties of water and sewage companies in the country has always been a concern. Objectives of the present research includes the detection of water loss points in the water distribution network using the EPANET model and the neurofuzzy method, and compares the two methods and provides a better method for detecting water loss points. In this study, in order to detect leakage in the water distribution network of Mohyabad city of Kerman province, a method based on hydraulic modeling and inverse solution of flow equations to predict the location and amount of leakage in the distribution network Water was introduced using EPANET software and neurofuzzy method with measured values of pressure in a number of network nodes. The results indicate that in the best selected architecture among all tested networks, leakage coefficients resulting from neurofuzzy prediction compared to EPANET modeled values are the most suitable option for modeling and have a coefficient. The correlation between 0.984 and the mean MSE forecast error, equal to zero with the root mean square error (RMSE), 0.0024 (l/s) indicates the optimal forecast accuracy and high reliability of the trained network. The proposed method with a minimum of hydraulic information from pressures, has a good ability to predict the location of leaks in the network and also the use of neurophase method is simple and low cost, in addition, has good accuracy.
کلیدواژه‌ها [English]
- Pressure difference
- Water distribution network
- Mohyabad
- Hydraulic modeling
- Water loss
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