The quality of the power supply has an immediate effect on the performance of distribution network-connected devices. It is expected that the equipment will run as designed and that its useful life will be roughly equivalent to the value given. Likewise, it is expected that the network would be dependable enough to prevent issues such as poor output or functionality loss.
There are several problems with the energy system. No matter how long these power quality concerns persist, they can damage equipment. It is essential to keep superior power quality to prevent equipment failure. This blog will highlight the research needed to evaluate the quality and dependability of electricity. Then, several power quality systems and techniques for assessing the effect and control are studied. In contrast to the impacts of dependability, which deal with long-term power outages, the repercussions of power quality interruptions are not at once apparent. Even though, in certain instances, the effects of a power quality interruption are felt instantly owing to malfunctioning equipment or a delay in a process, the effects are not always noticed at once. This is particularly true for short sounds such as sags and breaks.
In other situations, the effects of a change in power quality may not be immediately obvious. An illustration is when equipment fails. In this instance, equipment degrades without anyone’s knowledge. In other instances, power quality concerns result in extra losses absorbed as part of the costs of doing business daily and going unreported.
The following are the immediate economic effects:
The following are a sampling of indirect economic effects:
The following are economic effects:
Voltage, frequency, and waveform of a power supply system reveal whether it meets power quality standards. However, the quality of power is affected by a few things. This blog addresses the following concerns with electricity quality:
Less frequent phenomena such as swells, transients, inter–harmonics, and noise have attracted less research.
1. Voltage consistency
Steady-state voltages are still constant for a long time (minutes or hours). Long-term high voltage levels (overvoltage) or low voltage levels (undervoltage) result in equipment failure, increased energy consumption by equipment, and likely system failure. The major economic consequence of steady-state voltage.
2. Unbalanced voltage
Frequently, unbalanced voltage results in higher losses, especially in induction and three-phase motors.
3. Harmonics of electrical energy
Almost all energy users produce harmonic currents and inject them into the power grid. Alternating currents with frequencies that are multiples of 50 hertz, generally known as the fundamental frequency, constitute harmonic currents. Typically, nonlinear electronics such as computers, variable speed drives (VSD), and discharge lamps create harmonic currents. Harmonic currents can cause considerable damage to the installation and electrical grid. Harmonic can cause damage to components, installation parts, part loading, inefficient use of the installation’s current carrying capability, shorter part life spans, and ineffective action of protection components, among other problems.
The voltage waveform envelope is adjusted to cause flickering. It causes incandescent light intensity to change in a predictable manner. This frequent change in the quantity of light emitted might give some people migraines, reduce their productivity, and in rare cases cause seizures.
5. Voltage drops
Most equipment is unaffected by voltage dips and interruptions, but longer interruptions usually cause equipment to trip and lose output. In general, it may be claimed that the cost of a lengthy interruption is not proportionate to its length. Instead, it follows a logarithmic curve.
People assert that the following variables have a substantial influence on the cost of a prolonged disruption:
AEMO uses the value of customer reliability (VCR) to decide how much interruptions cost all users. Despite these numbers mostly showing how much customers are ready to pay to avoid an interruption, this desire is likely correlated with the actual cost. According to these estimates, a one-second outage costs around 20% less than an hour-long interruption.
CareLabs offers services to discover and evaluate power quality concerns. They are listed below:
Using the ETAP (Electrical Transient Analysis Program) software, CareLabs investigates and evaluates power quality. It is the finest program for calculating and modelling all electrical system components to assure equipment safety. We supply power quality analysis services in major cities including Manila, Quezon, Davao, Caloocan, and Cebu. CareLabs tries to give you the best service possible to improve the quality and dependability of your electrical installation. Contact us at once to schedule a power quality study or to receive a quote.