The new idea of this paper is investigation the effect of
bilateral contract between Disco and upstream network and between Disco-Customers in
supplying demand
power of customers based on hybrid
power market rules. In this paper, an optimal location of multi types of distributed generation as independent private sector in a distribution system under pool and hybrid based electricity market in order to cover a constant demand
power using
bilateral contract for selling fixed value
power with certain price value during every condition of market by upstream network to is presented and discussed. The hybrid market considered in this paper consists of four independent sectors and participants, as (1) DG owners, (2) distribution company known as Disco, (3) Independent Supervisor Operator (ISO) in order to superintend on market situation and finally (4) Customers. Based on hybrid electricity operation, in this study it is supposed that in every condition Disco using
bilateral contract with 63/20 substation, purchase constant
power with certain price and sell it to customers with another contract. Of course due to this
bilateral contract, the operation cost of Disco increases and on the other hand the reliability of system increases and the revenue obtained from decreasing energy not supplied load is the important subject that is considered and analyzed in this research.
In this research, GA-based Tabu Search method (GATS) is investigated and analyzed in order to optimal location of DG units with certain capacity but with multi types for optimizing net present worth subject to economical, technical, and market constraints. The costs include capital cost, replacement cost, operation and maintenance cost, fuel cost, production cost, and reliability improvement cost.