A Study of SVC’s Impact Simulation and Analysis for Distance Protection Relay on Transmission Lines

Khoa, Ngô Minh; Hieu, Nguyen Huu; Viet, Dinh Thanh

doi:10.11591/ijece.v7i4.pp1686-1695

Cited by 10 publications

(7 citation statements)

References 5 publications

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“…In [12], optimization of power flow with the mid-point SVC is observed. The results in the paper [13] manifests that in presence of SVC, zero sequential component of the injected voltage is increasing during fault and may lead to relays under-reach during L-G fault.…”

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confidence: 76%

Application of Admittance-Based Relaying Scheme Under Dynamic Shunt Compensation

Sharma

Shaw

Gupta

2020

Lecture Notes in Electrical Engineering

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Nowadays, in most parts of the world, power producers and power providers face the challenge of higher demand of power flow, reduced cost delivery of the power, and increase in reliability. There has also been a rise in alternative and renewable energy systems that has led to the rise in installation capacity of power production in the world. The continuous rise in the demand of electrical power has led to compound linkage among the power utilities to enhance the transferring of electrical power. Also due to strong economic and statutory policies, contriving the new TLs and expansion of old ones are becoming quite difficult day by day. Hence, the power systems are made to be operated close to their stability limits (including both transient and dynamic).In these cases, the power system has greater chances of losing its stability even for minute interferences. To enhance the system stability, Flexible AC transmission systems (FACTS) are widely used to control power flow, voltage profile, and giving adequate damping of inter-area oscillations [1]. The most frequently used FACTS devices with respect to its application are the static VAR compensator (SVC). SVC is a "primordial" FACTS device that uses thyristor as its controllers [2]. An SVC is high voltage system that maintains the system voltage effectively at its coupling point, to keep the system voltage invariant at its desired value. It is a shunt device that controls and compensates the reactive power flow with the help of a fixed

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mentioning

confidence: 76%

Application of Admittance-Based Relaying Scheme Under Dynamic Shunt Compensation

Sharma

Shaw

Gupta

2020

Lecture Notes in Electrical Engineering

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“…Based on two-end measurements, Christos et al (2022) proposed the two formulations of fault location algorithm which was appropriate for unbalanced medium voltage overhead distribution systems of radial network with or without distributed generations (Khoa, Van, Hung and Tuan, 2022;Saad et al 2018). The fault location algorithm based on synchronous phasor measurement for shunt-compensated lines under dynamic conditions was proposed to overcome the uncertainties in the controller parameters of the shunt compensator device (Deng et al 2022;Khoa et al 2017). The novel fault location approach based on the exact distributed parameter line model and sparse estimation was proposed for transmission lines (Jia et al 2022).…”

Section: Notificationmentioning

confidence: 99%

Methods for Fault Location in High Voltage Power Transmission Lines: A Comparative Analysis

Truong

2022

Int. J. Renew. Energy Dev.

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Power transmission system stability can be significantly affected due to faults. The fault location accuracy in the transmission lines can make many benefits such as acceleration of the line restoration, reduction in cost, breakdown time, maintenance, and time searching. The methods based on the impedance, including the simple reactance, Takagi, modified Takagi, and double-end, are very much appreciated for locating the fault in transmission lines and especially by estimating the fault distance. This study proposes a comparative case study between these methods. The theoretical basis and the analysis, calculation, and estimation of each method are specifically re-established. To observe the performance of each method, a practical 220kV Quy Nhon - Tuy Hoa transmission line in Vietnam is used to simulate, calculate, evaluate, and compare under the various fault types and resistances. The power system is modeled and simulated in the MATLAB/Simulink software via the time domain. The voltage and current measurements at two ends of the line are used to determine the fault location on the Quy Nhon - Tuy Hoa transmission line. The simulation results show clearly the effectiveness of each fault location method.

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“…Arc resistance affects impedance relay more than reactance relay but less than mho distance relay. In this paper, mho relay is explored for our analysis [9].…”

Section: Figure 9 Zones Of Protection Of a Transmission Line 26 Choic...mentioning

confidence: 99%

“…The SVC control system is responsible for the controlled firing of the thyristors to inject or absorb VAR into the system based on the inherent system parameters. The SVC Control system consists of four (4) components which include the measurement system, voltage regulator, distribution unit and firing unit [9,11].…”

Section: 5the Svc Control Systemmentioning

confidence: 99%

Performance analysis of static var compensators for distance protection of Nigerian 132-kV sub-transmission network using Matlab/ Simulink model

Oyedeji

2022

MANAS Journal of Engineering

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In this paper, the influence of the Static Var Compensators (SVC) on distance relay protection when connected to the sub-transmission network of the Nigerian 132-kV grid system is investigated. This is carried out by monitoring the error margin of the fault locator associated with the distance protective relays when SVC is connected to the transmission line. The location of the SVC is selected such that there is a common primary source of power to the subtransmission network (Ikorodu-Sagamu 132-kV transmission line) and the SVC, which is a shunt-connected device located on Ikorodu 132-kV bus. The fault is simulated at 33.6 km and 60.4 km respectively from the Ikorodu 132-kV sub-station in MATLAB/ Simulink model and the simulation results obtained are used to investigate the influence of SVC on distance protective relay when connected to the 132-kV power transmission line. The results of the line faults are obtained with respect to earth for both zones one (1) and two (2) when SVC is connected and disconnected for all shunt type of faults. Thus, indicating under-reach and overreach characteristics of the distance relay, when the SVC is connected and disconnected, while the transmission line protection showed no under-reach or over-reach characteristics for line-toline fault for both zones with the SVC connected or disconnected. The results of this study show that though SVCs improve the quality of power to consumers, there is a tendency for underreach and over-reach characteristics of the protective relay to be displayed when the relays are disconnected and connected, which introduces error margins to the fault locator in distance protective relays. Therefore, more detailed dynamic simulations are recommended for reducing the error margin.

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A Study of SVC’s Impact Simulation and Analysis for Distance Protection Relay on Transmission Lines

Cited by 10 publications

References 5 publications

Application of Admittance-Based Relaying Scheme Under Dynamic Shunt Compensation

Application of Admittance-Based Relaying Scheme Under Dynamic Shunt Compensation

Methods for Fault Location in High Voltage Power Transmission Lines: A Comparative Analysis

Performance analysis of static var compensators for distance protection of Nigerian 132-kV sub-transmission network using Matlab/ Simulink model

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