Towards Realistic Flow Control in Power Grid Operation
Power flow control units (like FACTS) offer an increased controllability and may help to tackle problems like load distribution in future power grids. However, these control units are an expensive investment. We showed in our previous work  that placing few flow control units on buses achieves high controllability. However, current control units are placed on transmission lines rather than buses, which weakens the previous result. Therefore, we translate the models and graph-theoretic explanation to control units placed on branches. Using IEEE benchmark data, we show experimentally that few controllers on branches still suffice to achieve minimum possible operation cost. In addition, we show that when increasing the loads, adding a small number of control units on branches—a number comparable to the previous result—reduces the operation costs and increases the feasibility range.
KeywordsHybrid power flow model FACTS Transmission network control Graph theory
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