Electricity produced in electric power industry is a typical commercial product.Therefore, it is subject to the same rules as all goods available on the market, taking into account the fact that both the provider and the receiver use the same powergrid, which affects the final quality of the power supply. The industry clearly defined power quality parameters, criteria and conditions for their evaluation and rules of distribution and control. Power distribution requires the control of power quality parameters,conditions of receiving process and recording all incidents of exceeded tolerance values. Data gathered in the control process is used for statistical evaluation of the compliance of recorded parameters with applicable standards, legal requirements and contracts. The final result is a confirmation of correctness which ends the assessment or a non-compliance statement, which is related to further analysis of the problem to indicate the responsibility for exceeding limits, which may result in financial consequences. Wide availability of electricity means that the public networks supply industrial facilities, public buildings, and the vast majority of households. Rapid technological progress resulted in a situation, where typical electric line machines, such as motors,light bulbs, resistive heaters are provided with additional power electronics that ensure easy control of the energy flow, power control and improved efficiency. The consequences of this progress, supported by the need to minimize costs, are significantly simpler solutions that cause higher levels of current and voltage distortion and interference. Power networks are now exposed to new types of impacts that deteriorate power quality, causing additional losses, which is particularly visible with increasing use of new devices. Consumer electronics involves small power devices, but a very large number of them may significantly affect the quality of power supply in public networks.
Power electronics in industry is related to much higher values of active and passive power, systematically repeated changes of load and type of reactive power, asymmetries of single-phase and two-phase loads, current distortion, voltage dips caused by temporary network overloads and equipment failures. Therefore, the industry supply networks experience troublesome voltage fluctuations causing light flickering lights, short voltage dips, higher levels of harmonic voltages and currents as well as dangerous resonance phenomena. Other adverse incidents include discontinuities and interruptions of power supply that cause losses in production or even hazards to the life of employees. The increased amount of negative impacts causes faster and unpredictable wear of machine parts, making it difficult to plan maintenance activities. Moreover, the risk of losses due to unforeseen failures also significantly increases.
Online Power Quality Analysis is an efficient tool for measuring the overall harmonics and different parameters for the system for detecting the harmonic events that may be caused due to external reasons and montoring the overall changes in the system parameters.
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PQM-711 power quality analyzer is an advanced product for wide type of measurements, analysis and recording of network parameters 50/60 Hz and the power quality diagnostic according to European standard EN 50160.
We also provide power quality audit services to help industries identify the causes of bad power quality in thier electrical system and what could be done to bring them down to a sufficient level. One of the newest technologies which are being followed by many organizations to reduce the power losses, reduce overall electricity consumption and avoid downtime,unneccesary trips and incresing the productivity of the organization is having a power quality audit.
Thinking of having a Power Quality Audit !!!