Abstract
The consideration of distributed energy resources as non-wires alternatives for the elimination of overloads and voltage problems poses new challenges for their location and management. Traditional location methodologies approach the problem from the distribution system operator perspective, who tries to correct overload and voltage outside margins while minimizing other possible negative impacts in the network. The approach presented in this paper also considers the investor’s point of view, seeking the most appropriate technology alternative, the maximum use of the available resource, and the minimum investment. Those aspects are explicitly taken into account in the formulation of the model, which takes the form of a mixed-integer nonlinear optimization problem. The proposed methodology is tested in two different scenarios using the medium-voltage distribution system benchmark of CIGRE. The results show that the interests of the distribution system operator and the investors can be jointly satisfied, achieving an effective, safe and realistic integration of new distributed resources.
Highlights
Recent reports, as [1], show the trend that will exist in the coming decades regarding the growth of electricity consumption, up to 40% in 2050 in the case of Europe [2]
The distribution system operators (DSO) must benefit from the distributed energy resources (DER), or at least not be affected by their installation
In this paper, a DER location and integration methodology based on considering costs, technology, and degree of use during the lifetime of the installations is proposed
Summary
As [1], show the trend that will exist in the coming decades regarding the growth of electricity consumption, up to 40% in 2050 in the case of Europe [2]. The rise in renewable generation in medium voltage (MV) networks poses several challenges to the distribution system operators (DSO) which should prepare to face problems such as overloads in transformers or lines and excessive voltage deviations [6]. To solve these problems, there are two possibilities: investment in traditional solutions or considering non-wire alternatives (NWA), such as the location of distributed energy resources (DER) or management techniques. Network expansion plans have been focused on traditional solutions for decades. Several studies analyze the expansion plans in different terms [8], [9]. The advantage of traditional solutions is that over the years they have proven to be reliable and effective, but they involve high costs, licensing problems, or even impossibility to carry out upgrades
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