On the optimal placement of distributed storage systems for voltage control in active distribution networks

Abstract

Abstract-Within the context of ancillary services provided to active distribution networks by distributed storage systems (DSSs), the paper focuses on the problem of optimally locating DSSs in order to maximize their support to the network voltage control. In particular, the paper proposes an optimal planning procedure that accounts specifically for the minimization of the network voltage deviations based on the formulation of a mixedinteger linear programing problem. In view of the large size of the problem, its solution relies on the so-called benders decomposition technic. The paper discusses the performance and the sensitivities of the proposed method as function of different scenarios accounting for various loads and distributed generation (DG) profiles as well as for different number of DSSs. An application example, referring to the IEEE 13 busses test feeder, is finally included to demonstrate, and discuss, the efficiency of the proposed method.Index Terms-Distributed energy storage systems, active distribution networks, optimal location, mixed integer non-linear problems, benders decomposition, voltage control. I. NOMENCLATURE V i,tVoltage magnitude of bus I at time tVoltage magnitude sensitivity of bus i with respect to active/reactive power injections at bus j, at time tPartial derivatives of the voltage phasors of bus i with respect to the active/reactive power at bus j at time t

Optimal Allocation of Dispersed Energy Storage Systems in Active Distribution Networks for Energy Balance and Grid Support

“…The constraints (4) and (5) show the maximum/minimum capacity (power rating and energy) of DSS that can be installed on each particular bus. The constraints (6) and (7) define the maximum of total DSS power rating and energy reservoir capacity that can be installed in the whole network.…”

“…However, it requires large investments in reliable and secure telecommunication infrastructures. In this respect, a different approach that potentially allows postponing the investment associated to the deployment of the above-mentioned telecommunication infrastructures is the use of Dispersed Storage Systems (DSSs) (e.g., [4], [5]). Indeed, DSSs can provide several services to distribution network operators (DNOs) ranging from local energy balance to ancillary services [6].…”

“…In [4], a preliminary study has been presented in which a specific algorithm for the optimal siting of DSSs to maximize their contribution to voltage control was proposed. Voltage sensitivity coefficients, as a function of the nodal power injections, were used to infer a linear formulation of the problem [20].…”

Review of Non-Traditional Optimization Methods for Allocation of Distributed Generation and Energy Storage in Distribution System

“…Nick et al [48] propose an algorithm for the optimal accommodation of the EES, to support voltage control of the active distribution power networks. The proposed algorithm was implemented in MATLAB programming environment and successfully tested on the IEEE 13 bus test system.…”

Optimal location and sizing of distributed storage systems in active distribution networks

“…Within this context, and following a preliminary study presented in [12] were a specific algorithm for the optimal location of DSSs to maximize their contribution to voltage control has been proposed, this paper extend such a methodology to account the inherent multi-objective advantages related to the usage of DSSs. In [12] voltage sensitivities coefficients, as a function of the nodal power injections, were used to determine the site of DSSs able to improve the network voltage profiles [13].…”