Stochasticsecurity constrained unit commitmentwith battery energy storage and wind power integration

Abstract

Large penetration of intermittent wind power creates reliability and system security issues in power system operation which can be alleviated by providing energy storage systems (ESS). In this view, this paper proposes stochastic security constrained unit commitment (SCUC) framework with battery energy storage (BES) considering wind power uncertainty and N-1-line contingency criteria. The uncertain wind power is modeled through probable scenarios. In addition, use of N-1 security criteria for pre and post line contingency is modeled using DC power flow. Conventionally, injection shift factor (ISF) are used in power flow equations however, N-1 security formulation is computationally heavy and takes huge time. This work proposes the use of line outage distribution factor (LODF) to reduce the number of non-zero coefficients of post contingency DC security constraints for improving computational requirement. Mathematical model is complex mixed integer linear programming (MILP) problem and solved using benders decomposition for modified IEEE reliability test system and 118-bus system. The results analyze the impact of BES, total operating costs with LODF and ISF, locational marginal price (LMP), wind curtailment, BES scheduling and computation time. The proposed model is economically beneficial for power system operations under large wind penetration. K E Y W O R D S battery energy storage, line outage distribution factor, security constrained unit commitment and wind integration 1 | INTRODUCTION Renewable integration is increasing at a faster rate owing to its environmental benefits and negligible operational cost. However, large plants like wind farms are located at the remote geographical area with limited network capability and low nearby loads. High wind penetration in such regions may produce transmission congestion. Also, large uncertainty

Unit commitment problem in renewable integrated environment with storage: A review

“…The utilization of BESS has been investigated for grid scale applications. [83][84][85][86][87][88] The application of BESS is not dependent on the geographical location. As against the long-term investment and a variety of complications involved with the installation of PSH and CAES, the BESSs have attracted the investors due to the comfort of its installation at desired locations.…”

A day‐ahead sleeved power purchase agreement model for estimating the profit of wind farms in the Indian energy market

“…With the assistance of energy storage technologies, the volatility of WP can be mitigated 25 . Again, the usage of pumped hydro storages, 26,27 battery energy storage, 28 plug‐in electric vehicles, 29,30 etc.…”