Energy storage management strategy in distribution networks utilised by photovoltaic resources. Issue 21 (5th November 2018)

• Record Type: Journal Article
• Authors: Azizivahed, Ali; Barani, Mostafa; Razavi, Seyed‐Ehsan; Ghavidel, Sahand; Li, Li; Zhang, Jiangfeng
• Is Part Of: IET generation, transmission & distribution. Volume 12:Issue 21(2018)
• Page Start: 5627
• Page End: 5638
• Publication Date: 2018-11-05
• Subjects: power distribution economics -- energy storage -- energy management systems -- photovoltaic power systems -- costing -- power system security -- power system stability -- power generation scheduling -- power generation economics -- minimisation; energy storage management strategy -- photovoltaic resources -- electrical energy storage units -- renewable energy resources -- branch current profiles -- unsecure system operation -- EES units -- multiobjective optimisation methods -- distribution network security -- voltage stability index -- multiobjective strategy -- 136‐bus distribution test systems -- 33‐bus distribution test systems -- radial network security index -- bus voltage profile -- optimal charging‐discharging schedule determination -- VSI -- IEEE standard; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2018.5221
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : Large penetration of electrical energy storage (EES) units and renewable energy resources in distribution systems can help to improve network profiles (e.g. bus voltage and branch current profiles), and to reduce operational cost as well as power losses. On the other hand, unsecure system operation as a result of involving these units is another challenge to network operators. Therefore, establishing a trade‐off between operational cost and security is very important. This study presents a new approach to determine the optimal charging/discharging schedule of EES units in distribution systems by employing multi‐objective optimisation methods, which will effectively reduce operational cost and enhance distribution network security. In this regard, a voltage stability index (VSI) is converted into a security index to improve the radial network security. This VSI index is treated as a separate objective function, and a multi‐objective strategy is implemented to obtain a set of non‐dominated solutions instead of a single optimal solution, which simultaneously minimise both of the operational cost and security index. In order to assess the effectiveness and applicability of the proposed method, it is applied to IEEE standard 33‐bus and 136‐bus distribution test systems, and then the obtained results are compared with those of existing methodologies.