Sensitive loads voltage improvement using Dynamic Voltage Restorer

Tandjaoui, M. N.; Benachaiba, Chellali; Abdelkhalek, Othmane; Doumbia, Mamadou Lamine; Mouloudi, Youssef

doi:10.1109/iceei.2011.6021679

Cited by 14 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The notion of custom power devices, is using power electronic controllers in the power systems to supply high quality power and reliable that is needed for the sensitive equipments. The custom power devices can be classified into two categories: Network reconfiguring type and Compensating type [8]. Network reconfiguring type protects the sensitive loads by; Avoid interruption, voltage sag, and swell by connecting healthy feeder, Disconnects the fault circuits, Limits the fault current by quickly inserting a series inductance in the fault path.…”

Section: Figure 1 Classification Of Power Quality Problemsmentioning

confidence: 99%

See 1 more Smart Citation

Fuzzy Neural Optimized Fuzzy Logic Controller Based Dynamic Voltage Restorer for Power Quality Improvement with Non-linear Loads

Shukir¹

2021

IJEM

View full text Add to dashboard Cite

Recently a large attention has been focused on a power quality domain due to: disturbances caused by non-linear loads, Increase in number of electronic devices and growth of renewable energy sources. Power quality measures the fitness of electric power transmitted from generation to industrial, domestic and commercial consumers. At least 50% of power quality problems are of voltage quality type. In power system voltage sags, voltage distortion introduced by harmonics, and asymmetrical voltage are considered to be the most severe affecting power quality, because both utilities and consumers are affected by these disturbances. Different methods introduced to solve power problems but the custom power devices are the most effective and efficient methods, one of which is the use of the Dynamic Voltage Restorer (DVR). The main objectives of this research are to achieve more accuracy in compensating the voltage variations and reducing the total harmonics distortion (THD) to acceptable limits. Most of the researchers applied the control strategies to compensate the voltage disturbances in critical load but did not focus on the objective of reducing the total harmonics distortion (THD). In many sensitive loads such as, airport lighting system, medical equipment, auxiliary plant of power system, and adjustable speed drives., the level of the (THD) is more important, this research focuses on mitigating the harmonics to less than 3%. An adaptive controller like fuzzy neural optimized fuzzy logic controller is proposed to improve the performance of the DVR in injecting the required voltage to restore the load voltage to its nominal value under different voltage variations which are created by MATLAB/SIMULINK program for a period of 0.15s from 0.8s and kept till 0.95s.

show abstract

Section: Figure 1 Classification Of Power Quality Problemsmentioning

confidence: 99%

“…Dynamic Voltage Restorer (DVR) is a series device and it is effective and efficient in compensating large voltage variations by voltage injection. It is used for mitigating the power disturbances [8]. The connection of the DVR with system is depicted in figure 2.…”

Section: Figure 1 Classification Of Power Quality Problemsmentioning

confidence: 99%

Fuzzy Neural Optimized Fuzzy Logic Controller Based Dynamic Voltage Restorer for Power Quality Improvement with Non-linear Loads

Shukir¹

2021

IJEM

View full text Add to dashboard Cite

show abstract

“…The injecting voltages of controllable amplitude, phase angle, and frequency (harmonic) in to the distribution feeder in instantaneous real time via a series-injection transformer as shown in Figure 6. The 'missing voltage' is the difference between the nominal voltage and the actual, it's calculated by a control system and it send to switchers of converter source converter (VSC) to inject in series in low voltage distribution systems [9].…”

Section: Operating Principle Of Dvrmentioning

confidence: 99%

“…When voltage sags or swells are detected such as in Figure 6, the capacitor delivers DC supply to the converter (VSC). The VSC ensures that only the missing voltage is injected to the transformer to improvement the voltage of sensitive load [9]. The required output voltage is obtained by using pulse-width modulation switching pattern.…”

Section: Operating Principle Of Dvrmentioning

confidence: 99%

Power quality enhancement by using D-FACTS systems applied to distributed generation

Ahmed¹,

Tandjaoui²,

Djebbar³

et al. 2019

IJPEDS

View full text Add to dashboard Cite

<p>In the majority of the isolated areas, the diesel generator is the principal source of electric power. For these areas, the price of extension of the electrical supply network is prohibitory and the price of fuel increases radically with insulation. The continuous fall in the prices of the generators based on renewable energy and the increasing reliability of these systems led to a greater use of the sources of renewable energy for the generation of electric power in the isolated areas. The diesel generators can incorporate in a network with other sources in base of renewable energies in order to create a new network known as distributed network. More recently intermittent renewable resources such as the wind power were considered as a distributed generation which is seen as being deployed to reduce the total emissions. The distributed generation equipment sets causing electric disturbances result in destabilizing the global network as well as pollutant, for these reason, system D-FACTS comes to answer all the concern of the customers, manufacturers, suppliers and the managers of the distributed network<em>.</em></p>

show abstract

“…Dynamic Voltage Restorer (DVR) is a Series device, it is efficient and effective to compensate large voltage variation by voltage injection, it is used for mitigating the power disturbances [4]. Distributed Static Compensator (DSTATCOM) is a Shunt device, it is efficient to compensate a small voltage variation by current injection which is very difficult to achieve because the supply impedance is low and the injected current has to be high to increase the load voltage, DSTATCOM is larger in size and costs more compared with the DVR [5]. Unified Power Quality Conditioner (UPQC) is a combination of the series (DVR) and the shunt (DSTATCOM) connected together by a common DC link capacitor, combining the series/shunt controllers improve the performance but with higher costs [6].…”

Section: Introductionmentioning

confidence: 99%

Comparison the Performance of the Dynamic Voltage Restorer Based on PI, Fuzzy Logic, and Fuzzy Neural Controller

Shukir¹

2021

IJEM

View full text Add to dashboard Cite

The Dynamic Voltage Restorer (DVR) is one of the most efficient and effective custom power devices in protecting the sensitive equipment against voltage sag and voltage harmonics due to; lower cost, smaller size and dynamic response. The inverter is the core of the DVR and it directly affects the performance of the DVR, incorrect injection or delay in the process would be dangerous to sensitive loads. The major functions of the DVR controller are, detection of voltage disturbances events in the system, calculation of the compensating voltage and generation the reference signal for the PWM to trigger the voltage source inverter. PI controller and fuzzy logic controller has been compared with the proposed fuzzy neural optimized fuzzy logic controller in correcting the sag problems and mitigating the harmonics distortion with linear and nonlinear loads. Fuzzy Neural optimized Fuzzy Logic controller is the most efficient in improving the performance of the Dynamic Voltage Restorer in compensating any kind of voltage variations and reducing the voltage Total Harmonic Distortion (THD) by enhancing an injection capability of the DVR which is highly influenced by a control algorithm employed. The system is simulated in MATLAB and results confirm the validity and feasibility.

show abstract

Sensitive loads voltage improvement using Dynamic Voltage Restorer

Cited by 14 publications

References 8 publications

Fuzzy Neural Optimized Fuzzy Logic Controller Based Dynamic Voltage Restorer for Power Quality Improvement with Non-linear Loads

Fuzzy Neural Optimized Fuzzy Logic Controller Based Dynamic Voltage Restorer for Power Quality Improvement with Non-linear Loads

Power quality enhancement by using D-FACTS systems applied to distributed generation

Comparison the Performance of the Dynamic Voltage Restorer Based on PI, Fuzzy Logic, and Fuzzy Neural Controller

Contact Info

Product

Resources

About