مدیریت انرژی ریزشبکه‌ها و جبران‌سازی هارمونیک آنها از طریق فیلتر اکتیو موازی مبتنی برسیستم‌های چندعاملی
محورهای موضوعی : مهندسی برق و کامپیوتر
محمدرضا صالحی راد
1
,
محمد ملایی امام زاده
2
*
1 - دانشگاه شهید باهنر کرمان
2 - دانشگاه شهید باهنر کرمان
کلید واژه: جبران‌سازی هارمونیکی جریان, سیستم‌های چندعاملی, فیلتر اکتیو موازی, فیلتر پسیو SC-RC-LCL, مدیریت انرژی,
چکیده مقاله :
در این مقاله با استفاده از فیلتر اکتیو موازی، یک استراتژی جدید مدیریت انرژی در ساختار چندعاملی ارائه می‌شود. این استراتژی به یک ریزشبکه AC متصل به شبکه اعمال گردیده و مسأله جبران‌سازی هارمونیکی را نیز شامل می‌شود. با بررسی مزایا و معایب فیلترهای اکتیو موازی و فیلترهای پسیو و همچنین کارایی آنها در ساختار چندعاملی برای ریزشبکه‌های قدرت، علت استفاده از فیلتر اکتیو موازی در روش پیشنهادی مشخص شده است. همچنین عملکرد این فیلترها جهت جبران‌سازی هارمونیک‌های جریان با بررسی نتایج FFT مورد مقایسه قرار گرفته است. در ریزشبکه مورد استفاده از مولد توربین بادی و مولد سلول‌های خورشیدی به عنوان منابع تجدیدپذیر و برای جبران تغییرات ناگهانی و برنامه‌ریزی‌نشده در توان تولیدی این دو مولد، دو پیل سوختی استفاده می‌شود. واحد مدیریت انرژی با توجه به توان تولیدی و توان مصرفی ریزشبکه، وضعیت فعال و غیرفعال‌بودن دو پیل سوختی را به نحوی مدیریت می‌کند که توان تبادل‌شده بین ریزشبکه و شبکه اصلی در بازه قابل قبولی محدود باشد. نتایج شبیه‌سازی نشان می‌دهند که روش پیشنهادی با استفاده از کنترل‌کننده‌های پیوسته محلی (در هر عامل) و کنترل‌کننده گسسته مرکزی (سیستم مدیریت انرژی) توانسته که عملکرد مناسبی داشته باشد و ضمن تأمین توان مورد نیاز ریزشبکه، هم‌زمان مسأله جبران‌سازی هارمونیک‌های جریان را به درستی انجام دهد.
In this paper, a new energy management strategy is presented by using shunt active power filter (SAPF) in a multi-agent structure. This strategy is applied to a micro-grid connected to the grid and includes the problem of harmonic compensation. By examining the advantages and disadvantages of shunt active power filters and passive filters, as well as their efficiency in the multi-agent structure for power micro-grids, the reason for using shunt active power filters in the proposed method has been determined. Also, the performance of these filters for compensating current harmonics has been compared by examining the FFT results. In the used micro-grid, wind turbine generator and solar cell generator are used as renewable energy sources (RES) and two fuel cells are used to compensate for sudden and unplanned changes in the production power of these two generators. The energy management unit manages the active and inactive state of the two fuel cells according to the production power and consumption power of the micro-grid in such a way that the power exchanged between the micro-grid and the main grid is limited within an acceptable range. The simulation results show that the proposed method using local continuous controllers (in each agent) and central discrete controller (energy management system) has been able to perform well and while providing the required power of the micro-grid, at the same time, it performs the current harmonics compensation issue correctly.
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