Optimal planning of stand-alone microgrids incorporating reliability

Abstract

This paper proposes a new method for the planning of stand-alone microgrids. By means of clustering techniques, possible operating scenarios are obtained considering the daily patterns of wind and load profiles. Then, an approximate analytical model for reliability evaluation of battery energy storage system is developed in terms of the diverse scenarios, along with multistate models for wind energy system and diesel generating system. An optimal planning model is further illustrated based on the scenarios and the reliability models, with the objective of minimizing the present values of the costs occurring within the project lifetime, and with the constraints of system operation and reliability. Finally, a typical stand-alone microgrid is studied to verify the efficiency of the proposed method.

Impacts of Energy Storage System on Power System Reliability: A Systematic Review

“…Meanwhile, the Weibull distribution considers wind speed, shape factor, and scale factor [39]. Other models are also applied, such as Rayleigh PDF [40] and available capacity probability tables [41]. Solar thermal energy is abundant and relatively available across countries.…”

“…May extend further research to include the effect of ESS siting on bus nodes on system reliability [41] Proposes an analytical model for reliability evaluation of ESS while optimally minimizing system present cost using genetic algorithm…”

Optimal planning of battery energy storage considering reliability benefit and operation strategy in active distribution system

“…In previous works, to assess the reliability of distribution system with BESS, a sequential Monte Carlo simulation method must be applied, whose process is complex and computation time is long, such as in [13]. A numerical calculation method based on expectation is proposed in this paper suitable for calculation of system reliability improvement with BESS in planning phase.…”

“…If there are two BESS in an island with important users, S min and S res are calculated as (12) and (13). n BI in (7) represents the set of elements whose fault can cause important user j and these two BESS in the same island.…”

Sizing optimization for island microgrid with pumped storage system considering demand response

“…), but still most of them are powered by diesel engines [1,2], which has poor supply reliability and can cause noise and atmospheric pollutants. Microgrid is a flexible and efficient renewable energy utilization method and has advantages in guaranteeing the security of the power supply, improving the renewable energy utilization rate and the power quality.…”