Reversible substation modelling with regenerative braking in DC traction power supply systems

Fulin Fan; Yafang Li; Smail Ziani; Brian G. Stewart

Reversible substation modelling with regenerative braking in DC traction power supply systems

Fulin Fan, Yafang Li, Smail Ziani, Brian G. Stewart

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

Compared to traditional unidirectional substations, a reversible substation (RSS) permitting bidirectional power flows is an efficient approach to recovering the braking energy of trains and increasing the energy efficiency of DC traction power supply systems (TPSS). This paper develops two models to reflect the role of an RSS under high and low fidelities, focusing on the converter- and TPSS-level simulation respectively. A particular RSS topology consisting of a 12-pulse diode rectifier and an antiparallel active neutral point clamped voltage source inverter (VSI) is replicated in a high-fidelity model where the VSI is controlled to maintain a constant DC voltage in the braking mode. To reduce computation burden, a low-fidelity model simplifies the rectifier into a diode in series with a controlled voltage source (CVS) that reflects its nonlinear output characteristics, and connects a DC voltage source in parallel with the CVS branch, permitting the delivery of braking power to the RSS under the constant DC voltage control. The two models are tested based on a simplified 1.5 kV TPSS and discussed alongside the consistency in the simulation of the power exchange and voltage transients at the RSS in traction and braking modes.

Original language	English
Number of pages	6
Publication status	Accepted/In press - 8 Jan 2021
Event	5th Annual IEEE Texas Power and Energy Conference - Texas A&M University, College Station, United States Duration: 2 Feb 2021 → 5 Feb 2021 http://tpec.engr.tamu.edu/

Conference

Conference	5th Annual IEEE Texas Power and Energy Conference
Abbreviated title	TPEC 2021
Country	United States
City	College Station
Period	2/02/21 → 5/02/21
Internet address	http://tpec.engr.tamu.edu/

Keywords

active neutral point clamped inverter
constant DC voltage control
regenerative braking
reversible substation
traction power supply system

Access to Document

http://tpec.engr.tamu.edu/call-for-papers/

Embargoed Document

Fan-etal-TPEC-2021-Reversible-substation-modelling-with-regenerative-braking-in-DC
Accepted author manuscript, 978 KB
Embargo ends: 5/02/21

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1 Active

Metrology for Smart Energy Management in Electric Railway Systems (EMPIR srt 12 MyRailS)
Stewart, B. & Roscoe, A.
European Commission - Horizon 2020
1/09/17 → 31/01/21
Project: Research

1 Conference contribution book

Power flow simulation of DC railway power supply systems with regenerative braking
Fan, F. & Stewart, B. G., 15 Jul 2020, 2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON). Piscataway, N.J.: IEEE, p. 87-92 6 p. (Mediterranean Electrotechnical Conference ( MELECON)).
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

Open Access
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Cite this

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title = "Reversible substation modelling with regenerative braking in DC traction power supply systems",

abstract = "Compared to traditional unidirectional substations, a reversible substation (RSS) permitting bidirectional power flows is an efficient approach to recovering the braking energy of trains and increasing the energy efficiency of DC traction power supply systems (TPSS). This paper develops two models to reflect the role of an RSS under high and low fidelities, focusing on the converter- and TPSS-level simulation respectively. A particular RSS topology consisting of a 12-pulse diode rectifier and an antiparallel active neutral point clamped voltage source inverter (VSI) is replicated in a high-fidelity model where the VSI is controlled to maintain a constant DC voltage in the braking mode. To reduce computation burden, a low-fidelity model simplifies the rectifier into a diode in series with a controlled voltage source (CVS) that reflects its nonlinear output characteristics, and connects a DC voltage source in parallel with the CVS branch, permitting the delivery of braking power to the RSS under the constant DC voltage control. The two models are tested based on a simplified 1.5 kV TPSS and discussed alongside the consistency in the simulation of the power exchange and voltage transients at the RSS in traction and braking modes.",

keywords = "active neutral point clamped inverter, constant DC voltage control, regenerative braking, reversible substation, traction power supply system",

author = "Fulin Fan and Yafang Li and Smail Ziani and Stewart, {Brian G.}",

note = "{\textcopyright} 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.; 5th Annual IEEE Texas Power and Energy Conference, TPEC 2021 ; Conference date: 02-02-2021 Through 05-02-2021",

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AU - Fan, Fulin

AU - Li, Yafang

AU - Ziani, Smail

AU - Stewart, Brian G.

N1 - © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2021/1/8

Y1 - 2021/1/8

N2 - Compared to traditional unidirectional substations, a reversible substation (RSS) permitting bidirectional power flows is an efficient approach to recovering the braking energy of trains and increasing the energy efficiency of DC traction power supply systems (TPSS). This paper develops two models to reflect the role of an RSS under high and low fidelities, focusing on the converter- and TPSS-level simulation respectively. A particular RSS topology consisting of a 12-pulse diode rectifier and an antiparallel active neutral point clamped voltage source inverter (VSI) is replicated in a high-fidelity model where the VSI is controlled to maintain a constant DC voltage in the braking mode. To reduce computation burden, a low-fidelity model simplifies the rectifier into a diode in series with a controlled voltage source (CVS) that reflects its nonlinear output characteristics, and connects a DC voltage source in parallel with the CVS branch, permitting the delivery of braking power to the RSS under the constant DC voltage control. The two models are tested based on a simplified 1.5 kV TPSS and discussed alongside the consistency in the simulation of the power exchange and voltage transients at the RSS in traction and braking modes.

AB - Compared to traditional unidirectional substations, a reversible substation (RSS) permitting bidirectional power flows is an efficient approach to recovering the braking energy of trains and increasing the energy efficiency of DC traction power supply systems (TPSS). This paper develops two models to reflect the role of an RSS under high and low fidelities, focusing on the converter- and TPSS-level simulation respectively. A particular RSS topology consisting of a 12-pulse diode rectifier and an antiparallel active neutral point clamped voltage source inverter (VSI) is replicated in a high-fidelity model where the VSI is controlled to maintain a constant DC voltage in the braking mode. To reduce computation burden, a low-fidelity model simplifies the rectifier into a diode in series with a controlled voltage source (CVS) that reflects its nonlinear output characteristics, and connects a DC voltage source in parallel with the CVS branch, permitting the delivery of braking power to the RSS under the constant DC voltage control. The two models are tested based on a simplified 1.5 kV TPSS and discussed alongside the consistency in the simulation of the power exchange and voltage transients at the RSS in traction and braking modes.

KW - active neutral point clamped inverter

KW - constant DC voltage control

KW - regenerative braking

KW - reversible substation

KW - traction power supply system

UR - http://tpec.engr.tamu.edu/call-for-papers/

M3 - Paper

T2 - 5th Annual IEEE Texas Power and Energy Conference

Y2 - 2 February 2021 through 5 February 2021

ER -

Reversible substation modelling with regenerative braking in DC traction power supply systems

Abstract

Conference

Keywords

Access to Document

Embargoed Document

Metrology for Smart Energy Management in Electric Railway Systems (EMPIR srt 12 MyRailS)

Power flow simulation of DC railway power supply systems with regenerative braking

Cite this