Smart Grid Seminar

Due to introduction of renewable energy and demand response, currently used scheme of frequency control in power networks becomes less efficient. Additionally, in large scale networks centralized communication requirement is difficult to fulfill. In such network information exchange might not be available even between some neighbors. The control presented in this paper is aimed to work in distributed fashion, under the condition of limited information exchange. After disturbance appearance it allows to stabilize and restore frequency to its nominal value, so the power network would return into the state close to economically optimal one. Thus it can provide primary and secondary frequency regulation and partially replace tertiary frequency regulation. The control is developed so that it works only with an estimate of power imbalance, ignoring instantaneous value of frequency. Finite-dimensional convex optimization problem of control effort minimization is considered. The control is designed so it converges with an exponential rate and without oscillations to the solution of optimization problem. Asymptotic stability of control and frequency is proved. Numerical simulations include efficiency comparison with the traditional control.

Bio:  Oleg Khamisov is 3d year PhD student in Skolkovo Institute of Science and Technology, Center for Energy Systems.  Oleg graduated from specialist course of Irkutsk State University, mathematical faculty with applied Mathematics and Informatics specialization in June 2015 and entered PhD program in September 2015.