Technical and economic comparative assessment of the local power supply system of a large commercial agricultural enterprise

Abstract

The power supply of agro-industrial enterprises depends on qualitative power supply. The application of local sources of power supply for the large commercial enterprises and their associations makes it possible to eliminate the disadvantages of centralized power supply. The article justifi es the transition from centralized power supply to local power sources for rural consumers. The authors developed a criterion to estimate power supply options for agro-industrial objects. The criterion is an integral index including capital investments in power source and current costs of its operation. Using the criterion and taking into account the conditions of energy comparability of the compared variants, we can determine the most preferable engineering power supply system of agro-industrial objects. Using the example of “AgroPromkomplektatsiya” holding divisions, the author analytically proved the relevance, expediency, and eff ectiveness of using the local source of energy supply (mini-CHP) - an autonomous 3 MW energy complex based on the innovative gas piston unit GPU “Jenbacher”. The actual common grid electricity tariff was 6.41 rubles/kWh, while the cost of electricity based on the innovative gas piston unit amounted to 3.34 rubles/kWh.