STATCOM-Based Reactive Power Compensation in Distribution Networks: A Review of Sizing, Control, and Renewable Integration Literature
Keywords:
Distribution networks, D-STATCOM, Reactive power compensation, Renewable integration, STATCOMAbstract
Distribution feeders were not built to handle power flowing both ways. Rooftop solar has changed that. When solar panels send power back up the line, voltage can rise too high. Old capacitor banks cannot fix this fast enough because they only switch on and off in steps. This paper looks at a device called STATCOM, and its smaller version, D-STATCOM, which can push or pull reactive power almost instantly. It works much faster than old methods. This paper reviews research on four things. First, where to place STATCOM devices and how big they should be. Second, how their controllers are built. Third, how they work together with solar and wind power. Fourth, how they compare to an older device called SVC. Sizing methods have changed over time. Older studies used simple trial-and-error search. Newer studies use mathematical methods that guarantee a better answer. Controller design has also changed, moving from simple PI controllers to smarter fuzzy and AI-based controllers. But these three research areas barely talk to each other. Also, almost every study on sizing tests its method on a made-up IEEE test network, not a real power line. This paper also looks at real loss numbers from Indian power companies, both nationally and in Maharashtra state. This shows how big this research gap really is. At the end, the paper suggests ways to connect sizing, control, and real utility data better than before.
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