AN ANALYSIS OF THE RESULTS OF MONITORING THE QUALITY OF ELECTRIC POWER IN AN UNDERGROUND MINE ELECTROMAGNETIC MEASUREMENTS

The problems involved in developing and using a system for monitoring the quality of electric power in an underground mine from the yield of diamond-containing rocks are considered. The equipment of such mining enterprises that gives rise to electromagnetic interference and has an undesirable effect on the quality of the electric power is determined. The results of measurements obtained using this monitoring For the effective utilization of electric power, it is important to analyze the electric power consumed and to set up a system for controlling its quality. The results of the operation of such a system considerably influence the investment programs of companies and enterprises. This is an important stage of the control if the values of the existing electric power quality do not correspond to its standard values (1-5). The parameters of the electric power which it is advisable to monitor for the best results in controlling the quality are determined for each enterprise. To do this, investigations need to be carried out to determine the locations where mea- suring instruments need to be placed to measure the quality, and for the continuous monitoring and analysis of the results obtained during the monitoring. These problems are solved by the combined work of specialists in industrial power services and scientific-research teams. At present, the monitoring of electric power quality at enterprises is of a short-term periodic nature. It is only car- ried out for certification, periodic and some other forms of tests to confirm that they correspond to obligatory requirements. The results of short-term tests do not fully or reliably reflect the situation in this area (6, 7). For the continuous monitoring of the quality control of electric power, prolonged tests of some of its characteristics are required. This primarily relates to the parameters of surges and dips in the voltage. Measurement data characterizing these dynamic processes and their statistical processing must be stored for a year. Only when this requirement is satisfied can the statistical characteristics obtained be used to improve and develop contractual arrangements between the suppliers and con- sumers of electric power. To increase the reliability, for completeness of the results, and for the operational control of electric power quality, the monitoring must be continuous. It is therefore necessary to carry out constant monitoring of the quality, using an auto- mated data-measuring system for monitoring electric power quality. Such a system enables measurement data to be obtained for determining that the electric power meets the compulsory requirements and makes clear the sources and reasons for any degradation in quality. A complete description of the operation of the data-measuring system can be found in (8-12).