Abstract
The impact of power quality indicators and synchronized vector measurement device errors on electrical mode parameter assessment is examined with using a model of a simple industrial power supply system. There are underestimated requirements for the accuracy of synchronized vector measuring devices (SVMDs) with regard to their use in technical solutions designed to control the power supply modes at industrial enterprises.
Highlights
As shown in [1], electricity quality (EQ) is the most important factor affecting the efficiency of power supply systems in industrial enterprises
In order to manage the mode of the industrial power network, it is necessary to have reliable information about the voltage values at different points in the company's network, the current values in the lines and the amount of power transmitted via feeders
Voltage dips of up to 19% are created by butt and spot welding machines in their work
Summary
As shown in [1], electricity quality (EQ) is the most important factor affecting the efficiency of power supply systems in industrial enterprises. Rolling mills with synchronous and asynchronous electric drives are sources of voltage fluctuations and dips. Mills with current converters generate interference in the form of fluctuations, dips and non-sinusoidal voltage. Calculating TVE can serve as a comprehensive indicator for calculation accuracy in regards of current and voltage parameters, It can be used to assess the modes of intelligent power supply systems. If only one of the above error sources is selected, 1% TVE can be obtained with amplitude error ±1%; phase angle error ±0.573° or synchronisation time error ±31μs for 50Hz [10]
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