Fundamental basis for distance relaying with symmetrical components

Phadke, A.G.; Ibrahim, Mohamed A.; Hlibka, T.

doi:10.1109/t-pas.1977.32375

Cited by 169 publications

(37 citation statements)

References 2 publications

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“…The symmetrical components of voltage (E FB ) at fault point F considering phase B of transmission line X can be expressed as follows [7,8]:…”

Section: Impedance Measured By the Proposed Schemementioning

confidence: 99%

Digital Distance Relaying Scheme for Phase Faults on Double Infeed Transmission Lines

Makwana¹,

Bhalja²

2016

Energy Systems in Electrical Engineering

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Performance of conventional non-pilot phase distance relay is affected by series capacitor (SC), remote infeed/outfeed, prefault system condition and arc resistance. The work presented in this chapter addresses the problems encountered by conventional non-pilot phase distance relay when protecting doubly fed series compensated transmission lines. One of the key points of this study is the detailed analysis of the apparent impedance as seen from the relaying point taking into account the effects of transmission line parameter uncertainties, behaviour of SC, arc resistance and variations in the system parameters external to the protected line. Based on extensive computer simulations of the infeed/outfeed, arc resistance and effects of SC on the relay characteristics, a new digital distance relaying scheme is proposed. It is based on digital computation of impedance of faulted portion of transmission line using symmetrical components of currents and voltages measured at local end only. To validate the proposed scheme, numerous computer simulations have been carried out on an existing Indian 400 kV, 300 km long series compensated transmission line using MATLAB/SIMULINK software. Simulation results demonstrate the effectiveness of the proposed scheme as the percentage error is within ±5 %.

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“…The symmetrical components of voltage (E FB ) at fault point F considering phase B of transmission line X can be expressed as follows [7,8]:…”

Section: Impedance Measured By the Proposed Schemementioning

confidence: 99%

Digital Distance Relaying Scheme for Phase Faults on Double Infeed Transmission Lines

Makwana¹,

Bhalja²

2016

Energy Systems in Electrical Engineering

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“…The sampler works in phase-lock with the GPS pulses, with sampling rates ranging from the initial 12 samples per cycle of the early developed devices [13] up to 128 in contemporary ones. A microprocessor receives the sampled data and the GPS time-tags, and calculates the positive-sequence components of all the voltage and current signals using different techniques [1]. In addition to voltage and current measurements, the microprocessor calculates an estimate of the frequency, f , and the rate of change of the frequency, df /dt, using the voltage angle.…”

Section: Synchronized Phasor Measurement Unitsmentioning

confidence: 99%

Virtualization of synchronized phasor measurement units within real-time simulators for smart grid applications

Al-Hammouri

Nordström

Chenine

et al. 2012

2012 IEEE Power and Energy Society General Meeting

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Abstract-Synchronized phasor measurement units (PMUs) provide GPS-time tagged high-sampling rate positive-sequence voltage and current phasors. When placed in high-voltage substations in power networks, PMUs can provide real-time information that is necessary for the development of Smart Transmission Grid software applications for improving power system monitoring, control and protection. The development of these applications, particularly for use within control centers for on-line purposes, is limited by the availability of and access to real-time PMU data and other information. One attractive approach for application development is the use of real-time simulators to which PMUs can be interfaced as hardware-in-the-loop (HIL) devices to harvest PMU data. However, this approach has technical and economical limitations, which can be tackled by the virtualization of PMU devices. This article describes the development of an entirely software-based synchronized phasor measurement unit for use within real-time simulators that will allow the emulation of a large number of real-life PMUs, which in turn can be used for creating new phasor-based applications.

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“…Because of the presence of FACTS controllers in a fault loop, the voltage and current signals at the relay point will be affected in both the steady state and the transient state. This in turn will affect the performance of existing protection schemes, such as the distance relay which is one of the very widely used methods in transmission line protection [4], [5]. The main principle of this technique is to calculate the impedance between the relay and fault points; the apparent impedance is then compared with the relay trip characteristic to ascertain whether it is an internal or external fault.…”

Section: Introductionmentioning

confidence: 99%

Performance of Distance Relay Estimation in Transmission Line with UPFC

Manokaran¹,

karpagam²

2010

IJCEE

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Abstract-This paper presents simulation results of the application of distance relays for the protection of transmission systems employing flexible alternating current transmission controllers such as the unified power flow controller (UPFC). Firstly a detailed model of the UPFC and its control is proposed and then it is integrated into the transmission system for the purposes of accurately simulating the fault transients. The simulation results show the impact of UPFC on the performance of a distance protection relay for different fault conditions and for different fault location.

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Fundamental basis for distance relaying with symmetrical components

Cited by 169 publications

References 2 publications

Digital Distance Relaying Scheme for Phase Faults on Double Infeed Transmission Lines

Digital Distance Relaying Scheme for Phase Faults on Double Infeed Transmission Lines

Virtualization of synchronized phasor measurement units within real-time simulators for smart grid applications

Performance of Distance Relay Estimation in Transmission Line with UPFC

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