Scaled Down Model of WECC 3-Machine 9-Bus System with Frequency-Dependent Lines

Challa, KK and Gurrala, G (2019) Scaled Down Model of WECC 3-Machine 9-Bus System with Frequency-Dependent Lines. In: 2019 9th International Conference on Power and Energy Systems (ICPES), 10-12 Dec. 2019, Perth, Australia, Australia.

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Abstract

A scaled-down model of WECC 3-machine 9-bus system is being developed as part of a Smart Energy Systems Infrastructure-Hybrid Test Bed (SESI-HTB) at the Electrical Engineering Department, Indian Institute of Science, Bangalore. Laboratory models developed in the past used lumped parameter models for transmission lines. The constant impedance transmission lines of 230 kV are replaced with the frequency-dependent (FD) models to accurately represent the transient phenomenon over a wide range of frequencies. Original WECC model only provides per unit data. To realize these FD lines standard tower and conductor configurations are used to match with the original test system data and power flow results. To realize the transmission lines physically, lumped parameter frequency-dependent (LPFD) models are derived for all the 230kV lines using a single step fitting algorithm. Procedure used to scale down the 230kV LPFD line models to 220V laboratory model is presented. The WECC model with LPFD lines and scaled-down LPFD (SD-LPFD) lines are validated by comparing their transient responses with the FD line model of EMTP-RV.

Item Type:	Conference Paper
Publication:	2019 9th International Conference on Power and Energy Systems, ICPES 2019
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	cited By 0; Conference of 9th International Conference on Power and Energy Systems, ICPES 2019 ; Conference Date: 10 December 2019 Through 12 December 2019; Conference Code:160542
Keywords:	Electric lines; Electric load flow; Electric power transmission; Finite difference method; Transient analysis; Transmissions, Frequency dependent; Indian institute of science; Laboratory models; Lumped parameter; Lumped parameter models; Single-step fitting; Smart energy systems; Transient phenomenon, Lumped parameter networks
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	01 Oct 2020 10:17
Last Modified:	01 Oct 2020 10:17
URI:	http://eprints.iisc.ac.in/id/eprint/65825

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