Two stage risk based decision making for operation of smart grid by optimal dynamic multi-microgrid. (June 2020)

• Record Type: Journal Article
• Authors: Zadsar, M.; Sebtahmadi, S.Sina.; Kazemi, M.; Larimi, S.M.M.; Haghifam, M.R.
• Is Part Of: International journal of electrical power & energy systems. Volume 118(2020)
• Publication Date: 2020-06
• Subjects: Active distribution network -- Distributed energy resource -- Emergency operation -- Energy storage system -- Multi-microgrid -- Renewable energy resource; Electrical engineering -- Periodicals; Electric power systems -- Periodicals; Électrotechnique -- Périodiques; Réseaux électriques (Énergie) -- Périodiques; Electric power systems; Electrical engineering; Periodicals; 621.3
• DOI: 10.1016/j.ijepes.2019.105791
• Languages: English
• ISSNs: 0142-0615

Abstract

Highlights: A two-stage resilient operational framework of ADNs is proposed that compromises between operation cost and operational risk due to equipment outage and renewable resources uncertainties. The energy storage systems are used as reserve resources in contingency mode modeled by the second stage. A minimum level of state of charge can be evaluated as the required reserve capacity of the distribution systems. Abstract: Resect severe economic losses caused by distribution system equipment outage have highlighted the importance of improving the system resiliency and reliability. In active distribution networks (ADNs), the distributed energy resources (DERs) managed by dynamic isolated microgrids in contingency mode provide an alternative approach to enhance the system resiliency and continue supplying critical loads after equipment outage. How to incorporate this ADNs capability into a short-term DERs scheduling is a challenging issue. In response to this challenge, in this paper, a two stage risk based decision making framework for operation of ADNs is proposed to coordinate 24-h DERs' scheduling and outage management scheme, in a way to be immune against contingency by creating optimal dynamic multi-micrigrid, micro-turbine and energy storage island operating and load shed plan. The first stage is the normal operation condition that operation cost should be minimized considering of the uncertainties of renewable resources, the electricity price and customers loads. The second stage is the operation in contingency condition. In the second stage, the main objective is to keep the shed load at minimum level. Numerical results and sensitivity analysis from modified 33-bus IEEE network are further discussed to demonstrate the efficiency of the solution approach.