Optimization of voltage modes of geographically dispersed electrical consumers at mining enterprises
- 1 — OOO KINEF
- 2 — Postgraduate student G.V. Plekhanov Saint Petersburg Mining University
Abstract
At present, about 20% of all produced energy is spent on mining, transportation and processing of minerals, and the energy component in the total production costs reaches 30-60%. Therefore, under the conditions of rising electricity prices and energy resources saving, the issue of reducing the energy component in the total cost of production and processing of minerals and reducing electricity losses acquires special significance. The voltages of individual electrical consumers must be such that their reliable, economical and stable operation in the whole possible range of technological and electrical parameters is ensured. Voltage regulation at the end of a section at a given load can be performed by changing: the voltage at the beginning of the section; the transformation ratio of the transformer included at the beginning of the section; the inductive resistance of the section, for example by including a longitudinal compensation unit; the active resistance of the section; the reactive power flow in the section. It was found that the application of measures to stabilize the voltage provides an increase in service life of electrical equipment of mine sections on average by 10-15%, the main transport and conveyor elevation - by 7-12%. To increase voltage stability, it is reasonable to form the structure of district networks taking into account the occurrence of minimum deviations of the network voltage relative to the rational level.
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