A Real-Time Synchrophasor-Based Zone-3 Supervision of Distance Relays Under Load Encroachment Condition

Dwivedi, Anmol; Mallikarjuna, Balimidi; Pal, Diptak; Reddy, M. Jaya Bharata; Mohanta, Dusmanta Kumar

doi:10.1109/jsyst.2018.2890475

Cited by 19 publications

(2 citation statements)

References 25 publications

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“…Faulted line for series compensated line was found using phase angle of positive sequence integrated impedance (PAPSII) in [9]. In [10], a global comparison between apparent impedances derived from cRIO based PMUs was performed to distinguish fault from load encroachment. In [11], a composite impedance directional principle was used for fault detection and faulty phase identification.…”

Section: Introductionmentioning

confidence: 99%

A Missing Data Tolerant Wide-Area Back-Up Protection Scheme for Transmission Network

2022

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The proposed scheme develops a missing data tolerant wide area back-up protection scheme for power transmission network with fewer PMUs. The scheme assumes division of power system into different coherent groups. The fault detection index (FDI) is used to detect a fault in the system network using active power transfer and angular difference between voltages of connected areas or summation of negative and zero sequence current components in each area. The faulted area is then identified by change in areacurrent (CAC) using current contribution towards each area and finally, the faulted line is identified for the respective faulted area using distance to fault (DF) index. The scheme is extensively tested on a New-England 39-bus system for several fault and stressed scenarios considering all PMU data available and PMU data loss at some of the buses. For this, the PMUs are deployed at less than half number of system buses. The maximum response time of the proposed scheme is approximately 260 ms which is well within the third zone operation time of distance relays for back-up protection. The test results including the comparative assessment with existing schemes indicate that the proposed scheme can be a potential candidate for enhancing the performance of the wide-area back-up protection in the transmission network.INDEX TERMS Wide-area measurement systems (WAMs), Phasor Measurement Unit (PMU), data loss, missing data communication failure, faulted line identification

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Section: Introductionmentioning

confidence: 99%

A Missing Data Tolerant Wide-Area Back-Up Protection Scheme for Transmission Network

2022

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“…There are several attempts in literature to develop experimental models of these lumped parameter lines for the power system studies. In [14]- [18], lumped parameter based models which represent the line as a constant parameter cascaded πsections were used. Lumped parameter models introduce additional frequencies which are not present in the system and may cause undesirable interactions [19].…”

Section: Introductionmentioning

confidence: 99%

Development of an Experimental Scaled-Down Frequency Dependent Transmission Line Model

Challa

Gurrala

2021

IEEE Access

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The penetration of power electronic based equipment in the power grid has increased the co-occurrence of electromechanical and electromagnetic transients. Significant research efforts have been focused in the last decade to study these interactions. Frequency dependent transmission line models are indispensable to understand such interactions. This paper describes a systematic procedure for the development of an experimental scaled-down 220 V frequency dependent transmission line model of a 230 kV transmission line. A reduced order lumped parameter frequency dependent transmission line using modal transformation is derived for the 230 kV transmission line and scaled-down to 220 V. Clarke and inverse Clarke transformations are implemented using specially designed 1-φ transformers. The inductances of the scaled-down model are realized using amorphous cores. Line energization, balanced, and unbalanced fault studies are carried out using the experimental line. The experimental results are compared with the simulation results of a universal line and a constant parameter π-model using EMTP-RV. The proposed experimental line properly captured important features of the frequency dependent line such as smoother wave shape during energization, traveling time, currents, and voltage magnitudes during the fault and after the fault removal.INDEX TERMS Amorphous core inductors, frequency dependent transmission line models, lumped parameter models, modal transformation matrix, switching transients, unbalanced faults, universal line model.

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Wide area power system transient stability prediction incorporating dynamic capability curve and generator bus coherency

Khalkho

Mohanta

2021

Electr Eng

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A Real-Time Synchrophasor-Based Zone-3 Supervision of Distance Relays Under Load Encroachment Condition

Cited by 19 publications

References 25 publications

A Missing Data Tolerant Wide-Area Back-Up Protection Scheme for Transmission Network

A Missing Data Tolerant Wide-Area Back-Up Protection Scheme for Transmission Network

Development of an Experimental Scaled-Down Frequency Dependent Transmission Line Model

Wide area power system transient stability prediction incorporating dynamic capability curve and generator bus coherency

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