Stochastic economic emission load dispatch
ABSTRACT The economic emission load dispatch (EELD) problem is a multiple non-commensurable objective problem that minimizes both cost and emission together. In the paper a stochastic EELD problem is formulated with consideration of the uncertainties in the system production cost and nature of the load demand, which is random. In addition, risk is considered as another conflicting objective to be minimized because of the random load and uncertain system production cost. The weighted minimax technique is used to simulate the trade-off relation between the conflicting objectives in the non-inferior domain. Once the trade-off has been obtained, fuzzy set theory helps the power system operator to choose the optimal operating point over the trade-off curve and adjust the generation levels in the most economic manner associated with minimum emission and risk. The validity of the method is demonstrated by analysing a sample system comprising six generators.
Full-textDOI: · Available from: J.S. Dhillon, Jun 29, 2015
- SourceAvailable from: Renu Sharma
- [Show abstract] [Hide abstract]
ABSTRACT: The optimization is an important role in wide geographical distribution of electrical power market, finding the optimum solution for the operation and design of power systems has become a necessity with the increasing cost of raw materials, depleting energy resources and the ever growing demand for electrical energy. In this paper, the real coded biogeography based optimization is proposed to minimize the operating cost with optimal setting of equality and inequality constraints of thermal power system. The proposed technique aims to improve the real coded searing ability, unravel the prematurity of solution and enhance the population assortment of the biogeography based optimization algorithm by using adaptive Gaussian mutation. This algorithm is demonstrated on the standard IEEE-30 bus system and the comparative results are made with existing population based methods.Journal of Electrical Engineering and Technology 01/2015; 10(1):56-63. DOI:10.5370/JEET.2015.10.1.056 · 0.52 Impact Factor
- [Show abstract] [Hide abstract]
ABSTRACT: Co-allocation of energy and reserve is an efficient approach in market clearance. Many different factors contribute to this problem while accounting for system security and credible contingencies may increase the allocated spinning reserve and the total costs, load flexibility as a result of Demand Side Programs may contribute with a positive effect on the total amount and cost of spinning reserve as well as the dispatched energy. This paper presents the integration of Time of Use Program in the securityconstrained energy and reserve Co-allocation market and the effect that TOUP has on the total costs and amount of reserve services are studied in an actual unit commitment market clearing problem. Differential Evolution Algorithm is utilized for an efficient 24-hour unit commitment approach which accounts for both system security and load elasticity. The effectiveness of proposed method is evaluated by application of the algorithm on IEEE 24 bus reliability test system. The results of the algorithm are compared in various cases with other approaches for the unit commitment problem and it is shown that considering TOU program has a noticeable positive effect on the obtained optimum solution.