پایان نامه مدل سازی و شبیه‌ سازی جبران‌ ساز استاتیکی مبتنی بر مدل DQ

فهرست پایان نامه مدل سازی و شبیه‌ سازی جبران‌ ساز استاتیکی مبتنی بر مدل DQ

فهرست:

صفحه

چکیده..................................................................................................................................................................1

فصل اوّل: مروری بر تحقیقات انجام شده در زمینه کنترل اینورترهای سه فاز

1-1 مقدمه ..........................................................................................................................................................2

1-2 مشخصه سازی و شاخصهای مربوط به فروافتادگی ولتاژ............................................................................4

1-3 کاهش تعداد خطاهای اتصال کوتاه و ارتباط با آن نامتعادلی ولتاژ...............................................................5

1-4 تاثیر تغییرات در در سیستم قدرت بر روی نامتعادلی ولتاژ..........................................................................5

1-5 نصب ادوات بهبود کننده ............................................................................................................................6

1-6 بهبود امنیت تجهیزات..................................................................................................................................6

1-7 روشهای کنترلی ارائه شده در مقالات و تحقیقات انجام شده......................................................................7

1-7-1  قطعی‌های ثابت......................................................................................................................................9

1-7-2 تنظیم ولتاژ ...........................................................................................................................................10

1-7-3 فلیکر ولتاژ............................................................................................................................................10

1-7-4 افتادگی ولتاژ..........................................................................................................10

1-7-5 ‌هارمونیک‌ها..........................................................................................................................................11

1-8 بررسی انواع ساختارهای اتصال به شبکه منابع تولید پراکنده و کنترل مبدلهای الکترونیک قدرت...........12

1-9 روش‌های مبتنی بر پردازش سیگنال‌های ولتاژ و جریان...........................................................................21

فصل دوم: آشنایی با ادوات FACTS

2-1 مقدمه.........................................................................................................................................................26

2-2معرفی جبران‌ساز Var استاتیک SVC........................................................................................................26

2-2-1کاربردهای  SVC.................................................................................................................................27

2-2-2 رایج­ترین انواع SVC ...........................................................................................................................28

2-3 معرفی و شبیه‌سازی جبرانساز استاتیک STATCOM...............................................................................29

2-3-1:کاربردهای STATCOM......................................................................................................................30

2-3-2 شبیه‌سازی STATCOM......................................................................................................................31

2-3-3:مقایسه STATCOM و SVC...............................................................................................................33

2-4 معرفی خازن سری کنترل تریستوری TCSC............................................................................................35

2-4-1 اهداف جبرانسازی خطوط انتقال توسط خازن­های سری.....................................................................35

2-4-2میراکردن رزونانس زیر سنکرون............................................................................................................36

2-5 معرفی ترانسفورماتور شیفت دهنده فاز PST ...........................................................................................36

2-5-1کاربردهای PST.....................................................................................................................................37

2-5-2کاربردهای دینامیکی و گذرا...................................................................................................................37

2-6 معرفی جبرانسازی سری سنکرون استاتیک SSSC ..................................................................................38

2-6-1کاربرد‌های SSSC..................................................................................................................................38

2-7 معرفی کنترل­کننده یکپارچه توان UPFC .................................................................................................39

2-8 معرفی کنترل­کننده توان بین خطوط(IPFC)..............................................................................................40

فصل سوم: بیان مساله

3-1 کنترل STATCOM.................................................................................................................................42

3-1-1کنترل­کننده داخلی..................................................................................................................................42

3-1-2کنترل­کننده خارجی ...............................................................................................................................43

3-2 مدلسازی اینورترهای سه فاز متصل به شبکه در جبران‌ساز STATCOM................................................44

فصل چهام:طراحی سیستم کنترل‌فازی برای اینورتر‌های سه فاز

4-1 مقدمه.........................................................................................................................................................48

4-2 طراحی کنترل فازی برای کنترل توان راکتیو..............................................................................................49

4-3  حلقه قفل فاز (PLL) .............................................................................................................................50

4-4 سیستم‌های فازی و کنترل فازی ...............................................................................................................51

4-4-1روش مرکز ثقل......................................................................................................................................56

4-4-2 روش میانگین مراکز..............................................................................................................................57

فصل پنجم: شبیه‌سازی و تحلیل نتایج آن

5-1 شبیه‌سازی در محیط نرم‌افزار مطلب.........................................................................................................58

5-2 تحلیل اینورتر در حالت تزریق توان راکتیو...............................................................................................62

5-3 نتیجه‌گیری................................................................................................................................................67

مراجع..............................................................................................................................................................68

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