Study of the active power exchanging between dynamic voltage restorer and the distribution power system

The paper deals with an optimized Unified Power Quality Conditioner (UPQC), which aims at the integration of series active and shunt active power filters with minimum VA loading of the UPQC. The series active filter is a Dynamic Voltage Restorer (DVR), which is operated in twofold functioning mode. During the unbalanced voltage sag, the DVR compensates the unbalance in the voltage sag. It also regulates the voltage at the load end with minimum VA loading of the overall UPQC by optimum angle voltage injection. Validity of the proposed scheme is proved through extensive simulation results.

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Power quality enhancement using Artificial Neural Network (ANN) based Dynamic Voltage Restorer (DVR)

E3S Web of Conferences ◽

10.1051/e3sconf/202130901100 ◽

2021 ◽

Vol 309 ◽

pp. 01100

Author(s):

Chaitanya Kasala ◽

Vinay Kumar Awaar ◽

Praveen Jugge

Keyword(s):

Neural Network ◽

Artificial Neural Network ◽

Power System ◽

Power Quality ◽

Superior Performance ◽

Dynamic Voltage Restorer ◽

Voltage Restorer ◽

Dynamic Voltage ◽

Artificial Neural ◽

Artificial Neural Network Ann

The power quality, which can affect consumers and their utility, is a key concern of modern power system. The sensitive equipment is damaged by voltage harmonics, sag and swell. Therefore, as usage of sensitive equipment has been increasing, power quality is essential for reliable and secure operation of the power system in modern times. The potential distribution flexible AC transmission system (D-FACTS) device, a dynamic voltage restorer (DVR), is widely used to address problems with non-standard voltage in the distribution system. It induces voltages to preserve the voltage profile and ensures continuous load voltage. In this paper, the voltage sag and swell is compensated by DVR with an artificial neural network (ANN) controller. For the generation of reference voltage for voltage source converter (VSC) switching, and for the voltage conversion from rotating vectors to stationary frame, synchronous reference frame (SRF) theory is applied. The DVR Control Strategy and its performance is simulated using MATLAB software. It is also shown a detailed comparison of the ANN controller with the conventional Proportional Integral controller (PI), which showed ANN controller’s superior performance with less Total Harmonic Distortion (THD).

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PMU and DVR based Power System Monitoring, Controlling and Voltage sag Compensation

ITM Web of Conferences ◽

10.1051/itmconf/20203201006 ◽

2020 ◽

Vol 32 ◽

pp. 01006

Author(s):

Abhishek Chalwadi ◽

Kiruthika M ◽

Bindu S

Keyword(s):

Power System ◽

Power Quality ◽

Measurement Unit ◽

Voltage Sag ◽

Dynamic Voltage Restorer ◽

Power System Monitoring ◽

Voltage Restorer ◽

Dynamic Voltage ◽

The Difference ◽

Compensation Device

The power system network is becoming dense and much more complex. Dynamic and continuous monitoring of the power system network is required to avoid power outages. Phasor Measurement Unit (PMU) is one such device that provides state estimation parameters of dynamic power system networks that are used for designing relays and controlling the system network. Power Quality problems such as voltage sags and swells can damage the sensitive load and cause abnormal voltage, current, and frequency conditions in a power system network. Fast and major developments in power electronics technology have made it possible to mitigate the power quality problems. Dynamic Voltage Restorer (DVR) is a voltage sag compensation device that compensates the difference in voltage avoiding interruptions and restores the voltage to the pre-fault value. This paper discusses a technique used for monitoring, protecting, and controlling the system under fault condition using PMU and compensate voltage sag for a sensitive load using DVR based on the data collected by placing PMU in an optimal location. The outcome of the above analysis is recorded which shows that effective monitoring, controlling, and voltage sag compensation can be done with less number of PMU’s placed optimally in conjunction with DVR.

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A Novel Control Strategy for Compensation of Voltage Quality Problem in AC Drives

International Journal of Power Electronics and Drive Systems (IJPEDS) ◽

10.11591/ijpeds.v9.i1.pp8-16 ◽

2018 ◽

Vol 9 (1) ◽

pp. 8

Author(s):

Syed Suraya ◽

P. Sujatha Sujatha ◽

Bharat Kumar P

Keyword(s):

Power System ◽

Control Strategy ◽

Electrical Machine ◽

Dynamic Voltage Restorer ◽

Ac Drives ◽

Voltage Quality ◽

Voltage Restorer ◽

Power Switches ◽

Dynamic Voltage ◽

Voltage Swell

This paper presents a novel control strategy for the compensation of voltage quality issues in power system networks with AC drives. Voltage quality is one of the key parameter for power engineers and to deliver the power with good quality should be given at most priority. Voltage quality mitigation in power system network is done by employing dynamic voltage restorer (DVR). DVR consists of power switches and power switches are to be controlled. DVR in this paper is controlled using a novel control strategy. A novel control strategy can effectively control DVR by improving voltage quality reducing the adverse effects of voltage sag and voltage swell in power system networks. The paper presents the DVR controlled with novel control strategy for electrical machine (induction motor) drive load application.

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