Abstract
The issues of assessing the effectiveness of using automated adaptive energy saving systems at industrial enterprises are considered. The difficulty of solving this issue for adequately assessing the effectiveness of energy saving devices of various types is shown. It is not correct to compare meter readings when energy saving devices are on and off due to rapidly changing loads. In addition, it is advisable that the process of assessing the effectiveness of using such devices be automated. This paper presents an algorithm for conducting efficiency tests by selecting sections of identical loads, focusing on the current values when the energy saving device is turned on and off. When an energy saving device is turned on or off, the current in the network changes due to reactive power compensation. Since when the device is turned on, the mode is reached gradually (therefore the load can change significantly), it is recommended to record the change in current when the device is turned off, since it is unlikely that the load will change significantly. Next, the power consumption values are compared, but when the device is turned on, the current should be lower by a previously determined value. To assess the effectiveness of using energy-saving devices at remote enterprises without physically connecting energy-saving devices, formulas have been developed to evaluate their effectiveness. As a result, in this article, a methodology has been proposed for assessing the effectiveness of using energy-saving devices at enterprises at the stage of preliminary tests using analyzers of energy network quality parameters; an algorithm has been developed for automated assessment of the current efficiency of using energy-saving devices in the process of their constant operation with the transfer of information to terminal devices of enterprises; relationships have been developed to assess the efficiency of using energy-saving devices based on data on network parameters received from enterprises; an algorithm has been proposed for automated assessment of the effectiveness of using energy-saving devices based on the use of developed relationships with the transfer of information to terminal devices of enterprises.
Keywords
energy saving, current, power, voltage, automation, compensation, reactive power, distortion, harmonics, power quality analyzers, power factor, correlation
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