Assessment of Harmonic Resonances in Third Rail System: A Case Study in Malaysia

Feasibility Study of Traction Power Supply for Medium-Capacity Rail System Based on Rigid Overhead Conductor Rail System: Case Study on Pham Van Dong Route in Ho Chi Minh City, Vietnam

“…The 22 kV of power will be distributed along the alignment through the main cable ring network for feeding traction and auxiliary loads. Keeping in view the reliability requirements, two bulk supply substations (BSSs) are proposed to be set up for the line [24][25][26][27][28]. The plan includes one BSS located near the Binh Trieu maintenance depot in Phase 1, and the remaining BSS located near the end station of the PVD line at Gia Dinh Park in Phase 2.…”

“…Therefore, stricter regulations are needed to deliver power to the subway. The traction power supply system for the MCS generally has the following technical features [12][13][14][15][16][17][18][19][21][22][23][24][25][26][27][28]:…”

“…The DC system traction power substation (TPS) consists of AC/DC converters including a rectifier transformer (RTT) and uncontrolled rectifier (SR). Transformer-rectifier groups (TSR) are in line with EN 50328, EN60146-1-1, NEMA RI9, and IEC 62590 connection schemes [12][13][14][15][16][17][18][19][21][22][23][24][25][26][27][28][45][46][47][48][49], for example, star, delta/delta, star-three-phase bridge; delta, star/star, delta-parallel bridge or series bridge; delta, star/double star-six-phase half wave with an interphase transformer (reactor); etc.…”

“…A traction power substation includes a 22 KV ac insulated power cable and accessories, 750 V DC switchgear, negative panels, a traction power feeding substation (TPFS), a traction return bond, low-voltage AC switchgear assemblies, auxiliary step-down transformers (AC system), 110 V batteries and chargers for control power supply, a local annunciator panel and 110 V DC distribution panel boards, supervisory control and data acquisition (SCADA) interface provisions (including Interfacing Panel), a low-voltage AC insulated power cable and accessories, a 750 V DC insulated power cable and accessories, outgoing DC disconnect switches as may be required for isolation purposes, control cables and accessories, installation materials, an earthling system, bonding, corrosion control, ventilation, and regenerative energy storage systems [13][14][15][16][17]24,[26][27][28]50].…”

“…In this study, we will calculate the capacity required for the system to operate in both normal and incident cases. At the same time, we will conduct an in-depth analysis of the power supply options, as well as the traction current distribution structure of the 750 V DC traction system with a third rail system, overhead catenary system (OCS) [25][26][27][28], and ROCS [22,[29][30][31][32][33][34][35][36][37][38]. In particular, the choice of ROCS in this research is one that we hope will become common in the near future because of its outstanding advantages.…”