Technique of a Wind-diesel Power System Formation for a Stand-alone Consumer Using a Cost-efficiency Criterion: Systems Approach

Abstract

The paper is devoted to developing a technique of a hybrid Wind-Diesel Power System (WDPS) formation for a stand-alone Power Consumer (PC) that takes into account the functional, economic, operational and environmental performance indicators. The technique creates a model for the system operation by modeling the wind as a correlated random process using the Monte Carlo method and using an economic (cost) model for the purchase, deployment, maintenance, and operation of the system, including possible state financial incentives, and recycling the excess power generated by a Wind turbine Generator (WG). The basic characteristics of the WDPS that are selected at the phase of its formation are the installed power of the WG, the storage battery capacity, the installed power of the diesel generator, the coefficient of the storage battery recharge level and the diesel generator switch on/off commands forming algorithm. As an example, we consider a WDPS formation for a PC located in the Dikson settlement in Krasnoyarsk Krai, Russian Federation. To calculate the unit cost of 1 (kWh) of power using WDPS, a general model was developed consisting of Monte-Carlo simulation functional and empirical economic models, as well as a computer program implementing these models. The calculation results show that the WDPS deployment project is economically competitive only if state financial support is received and an auxiliary system for recycling excess power generated by the WG is used. The practical application of the developed methodology as a decision support system in the renewable energy industry is discussed