Flexible risk control strategy based on multi-stage corrective action with energy storage system
- Authors
- Kim, S.; Lee, Y.R.; Kim, M.K.
- Issue Date
- Sep-2019
- Publisher
- Elsevier Ltd
- Keywords
- Battery energy storage system; Flexible risk constrained-optimal power flow; Multi-stage corrective action; Pumped hydroelectric storage; Risk index
- Citation
- International Journal of Electrical Power and Energy Systems, v.110, pp 679 - 695
- Pages
- 17
- Journal Title
- International Journal of Electrical Power and Energy Systems
- Volume
- 110
- Start Page
- 679
- End Page
- 695
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/18606
- DOI
- 10.1016/j.ijepes.2019.03.064
- ISSN
- 0142-0615
1879-3517
- Abstract
- This paper presents a flexible risk control strategy with energy storage system to assist in taking a remedy action for removing a line overload in post-contingency. The problem is formulated as a flexible risk constrained-optimal power flow with multi-stage corrective action, which is classified into three types using the difference in ramp rate characteristics of the energy storage system unit and generator. The first-stage minimizes the operating costs in pre-contingency and the remaining stages help to mitigate the risk in post-contingency. With reference to the emergency transmission rating, each line has been set with different risk constraints. Here, the risk index is implemented by different types of a piecewise linear severity function according to the line overload. The proposed strategy can mitigate the risk constraint by taking a rapid corrective action using an storage units with a fast ramp rate, and it is proved using RTS 96 modified 24-bus and 73-bus systems. Based on the results of the case study, in which other strategies are compared, the proposed multi-stage risk control strategy with ESS is found yield a better performance. © 2019 Elsevier Ltd
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