Impact of VSC-Based Multiline FACTS Controllers on Distance Protection of Transmission Lines

Khederzadeh, Mojtaba; Ghorbani, Amir

doi:10.1109/tpwrd.2011.2168428

Cited by 74 publications

(44 citation statements)

References 18 publications

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“…Impact of IPFC, UPFC and GUPFC were analyzed and found that measured impedance was higher than expected leading to false operation of relay. It was also found that GUPFC has the most severe influence than others with IPFC having the least impact [11].…”

Section: Facts Devicesmentioning

confidence: 90%

Performance Evaluation of Transmission Line Protection Characteristics with DSTATCOM Implementation

Khan¹,

Mahmood²,

Ahmad³

2017

ijacsa

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Abstract-To meet with the ever-enhancing load demands, new transmission lines should be bolted-on in the existing power system but the economic and environmental concerns are major constraints to this addition. Hence utilities have to rely on the existent power system infrastructure with some modifications. To enhance controllability and boost power transfer potential of the existing power system the use of Flexible Alternating Current Transmission System (FACTS) device is the most viable modification. FACTS devices include Static VAR Compensator (SVC), thyristor controlled series capacitor (TCSC), Thyristor Controlled Reactor (TCR), Thyristor Switched Capacitor (TSC) and Self Commutated VAR compensators i.e. Static Synchronous Compensator (DSTATCOM). Among the FACTS devices,DSTATCOM is the most feasible choice because of its capability to furnish both leading and lagging reactive power, faster response time in comparison with others, smaller harmonic content, inrush current generation is minimum and the dynamic performance with variations of voltage is quite good. DSTATCOM has the ability to have effective control over various issues concerning AC power transmission. However, the Parameters of the protection devices in the present power system are set without taking into account the reaction of these FACTS devices. So in order to ascertain stability and reliability of power system, reaction of FACTS devices with the existent protection schemes must be thoroughly investigated. This paper aims to explore the deviations in the performance characteristics of transmission line protection due to installation of DSTATCOM on a 220KV EHV transmission line using theoretical as well as MATLAB/SIMULINK simulation models. The dynamic performance of a DSTATCOM connected to an existing transmission line system is evaluated when large industrial induction motor is started and voltage sags are introduced.

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Section: Facts Devicesmentioning

confidence: 90%

Performance Evaluation of Transmission Line Protection Characteristics with DSTATCOM Implementation

Khan¹,

Mahmood²,

Ahmad³

2017

ijacsa

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“…Majority of the studies have tackled these effects on impedance relays like the distance relays of transmission lines and loss-of-excitation (LOE) relays of synchronous generators, both of which are based on impedance measurements. Investigations in [1][2][3][4][5][6][7][8][9][10][11] analyze the distance relay performance in the presence of FACTS controllers. These studies can be categorized into three major parts based on different compensation devices: a) shunt-FACTS like static Var compensator (SVC) and static synchronous compensator (STATCOM) [1][2][3][4], b) series-FACTS like SSSC and thyristor controlled series capacitor (TCSC) [5][6][7], and c) shuntseries-FACTS like generalized interline power flow controller (GIPFC) and unified power flow controller (UPFC) [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Active power based distance protection scheme in the presence of series compensators

Ghorbani

Ebrahimi

Ghorbani

2017

Prot Control Mod Power Syst

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Flexible ac transmission system (FACTS) controllers, especially the series-FACTS controllers, affect the operation of distance relays and can lead to the relays under/over-reaching. This paper aims to demonstrate the effects of static synchronous series compensator (SSSC) and series capacitive compensation (SCC), as two important series compensators, on the distance protection using theoretical and computational methods. The results of the investigation are used to develop a feasible and adequate method for eliminating the negative effects of these devices on the distance relays. The developed method measures the voltages at terminals of the SSSC and SCC by phasor measurement units (PMUs) which are then transmitted to the relay location by communication channels. The transmitted signals are used to modify the voltage measured by the relay. Different operation types and conditions of SSSC and SCC, and different faults such as phase-to-phase and phase-to-ground faults are investigated in simulations. Since the modeled distance relay can measure the fault resistance, trip boundaries are used to show the performance of the presented method. Results show that the presented method properly eliminates the negative effects on the distance relays and prevents them from mal-operation under all fault resistance conditions.

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“…Majority of the researches have surveyed these effects on impedance relays such as the distance relays of transmission lines and loss-of-excitation (LOE) relays of synchronous generators, which both operate based on the impedance measurements. The distance relay performance is analyzed in [1][2][3][4][5][6][7][8][9][10][11] in the presence of FACTS controllers. These studies include three major investigation categories; which deal with; a) shunt-FACTS such as static Var compensator (SVC) and static synchronous compensator (STATCOM) [1][2][3][4], b) series-FACTS such as SSSC and thyristor controlled series capacitor (TCSC) [5][6][7], and c) shunt-series-FACTS such as unified powerflow controller (UPFC) and generalized interline powerflow controller (GIPFC) effects [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Modified Transmission Line Protection Scheme in the Presence of SCC

Naeini¹,

Vaseghi²,

Mahdavian³

2017

Journal of Electrical Engineering and Technology

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-Distance relay identifies the type and location of fault by measuring the transmission line impedance. However any other factors that cause miss calculating the measured impedance, makes the relay detect the fault in incorrect location or do not detect the fault at all. One of the important factors which directly changes the measured impedance by the relay is series capacitive compensation (SCC). Another factor that changes the calculated impedance by distance relay is fault resistance. This paper provides a method based on the combination of distance and differential protection. At first, faulty transmission line is detected according to the current data of buses. After that the fault location is calculated using the proposed algorithm on the transmission line. This algorithm is based on active power calculation of the buses. Fault resistance is calculated from the active powers and its effect will be deducted from calculated impedance by the algorithm. This method measures the voltage across SCC by phasor measurement units (PMUs) and transmits them to the relay location via communication channels. The transmitted signals are utilized to modify the voltage signal which is measured by the relay. Different operating modes of SCC and as well as different faults such as phase-to-phase and phase-to-ground faults are examined by simulations.

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Impact of VSC-Based Multiline FACTS Controllers on Distance Protection of Transmission Lines

Cited by 74 publications

References 18 publications

Performance Evaluation of Transmission Line Protection Characteristics with DSTATCOM Implementation

Performance Evaluation of Transmission Line Protection Characteristics with DSTATCOM Implementation

Active power based distance protection scheme in the presence of series compensators

Modified Transmission Line Protection Scheme in the Presence of SCC

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