EDPN SERVICES & SYSTEM · CRITICAL POWER SYSTEMS · VIETNAM
PROJECT REFERENCE

Uong Bi Thermal Power Plant — 300 MW · AC/DC After-Sales Service

11 years serving Uong Bi Thermal Power Company — contributing to its success to this day.

After-sales reference for the AC UPS, DC and battery installed base of the Uong Bi 300 MW unit, operated by Uong Bi Thermal Power Company (EVNGENCO1).

SECTORUtilitiesAPPLICATIONThermal Power Generation / AC UPS, DC & Battery After-Sales ServiceREFERENCE HISTORY2013–2022
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EDPN engineer measuring cell voltages on the 220 VDC Hoppecke OPzV battery at Uong Bi 300 MW — EDPN site survey, December 2012
END USERUong Bi Thermal Power Company (EVNGENCO1) - Uong Bi 300 MWSITE / PROJECTUong Bi Thermal Power Plant — 300 MW unit, Uong Bi, Quang Ninh
INSTALLED-BASE LIFECYCLE

From factory to after-sales support.

One installed base, followed through its life — who did what, and when.

2004–2005
Manufactured

Chloride dual inverter EXOND APODYS, EXCEL APODYS 220 VDC chargers and the 220 kV substation dual charger.

OEM · CHLORIDE
2005
In operation

300 MW unit in operation with its Chloride AC UPS and 220 VDC systems (end-user letter: in operation since 2005).

PLANT
2012
Site survey

EDPN site survey of the battery rooms, chargers and UPS.

EDPN
2013
First EDPN service

Service for the dual UPS, chargers, 220 VDC battery and 220 kV substation Ni-Cd batteries.

EDPN
2014
Incident response

Survey and capacity testing after cracked cell containers on the 220 VDC battery.

EDPN
2020
Battery replacement & AC/DC overhaul

New Alcad bank with installation, capacity testing and commissioning; overhaul of the 220 kV substation AC/DC supply.

EDPN
2022
After-sales service

After-sales service for the 300 MW unit installed base.

EDPN
Manufacturer / plantEDPN
PROJECT

After-sales service for the AC UPS, 220 VDC and battery systems of the 300 MW unit and the plant 220 kV substation DC system.

Preventive maintenance, repair, spare parts and troubleshooting for the Chloride dual 230 VAC inverters and 220 VDC station chargers, capacity testing of the 220 VDC OPzV station battery, and service for the 220 kV substation DC system — dual charger and vented Ni-Cd battery.

After-Sales ServicePreventive MaintenanceRepairSpare PartsTroubleshootingBattery Capacity TestingBattery Supply
THE REQUIREMENT

What the site needed.

A 300 MW coal-fired unit depends on its AC UPS, 220 VDC systems and batteries for control and protection. The installed equipment needs manufacturer-level maintenance, repair, spare parts and verified battery capacity over its operating life.

EDPN SCOPE

What EDPN delivered.

EDPN provides after-sales service for the Chloride installed base of the 300 MW unit — preventive maintenance, repair, spare parts and troubleshooting for the dual 230 VAC inverters and the 220 VDC station chargers. EDPN carried out capacity testing of the 220 VDC OPzV station battery and services the plant 220 kV substation DC system — 220 VDC dual charger and vented Ni-Cd battery — including supply of a new Alcad Ni-Cd battery in 2020.

PROJECT HISTORY

Project history.

2012
Site survey

EDPN site survey of the battery rooms, chargers and UPS (December 2012).

2013
Service

Dual UPS, chargers, 220 VDC station battery (four banks) and two Ni-Cd batteries for the 220 kV substation.

2014
Battery incident response

After cracked cell containers on the 220 VDC Hoppecke OPzV battery, EDPN surveyed the battery and carried out capacity testing (2014).

2020
Battery replacement

220 kV substation: new Alcad vented Ni-Cd bank supplied by tender, with replacement, installation, battery capacity testing and commissioning.

2020
220 kV substation AC/DC overhaul

Overhaul of the AC/DC power supply equipment of the 220 kV substation.

2022
Service

After-sales service for the 300 MW unit installed base.

RESULT

What followed.

After-sales support for the AC and DC installed base of the Uong Bi 300 MW unit and the plant 220 kV substation since 2013.

2012 · SITE SURVEY

Battery rooms and DC systems before the first EDPN service.

EDPN site photos, December 2012.

EDPN engineer measuring cells on the 220 VDC Hoppecke OPzV battery (2012)
EDPN engineer measuring cells on the 220 VDC Hoppecke OPzV battery (2012)
EDPN engineer at an Alcad Ni-Cd battery bank (2012)
EDPN engineer at an Alcad Ni-Cd battery bank (2012)
Alcad Ni-Cd battery bank on its rack (2012)
Alcad Ni-Cd battery bank on its rack (2012)
220 VDC battery charger panel (2012)
220 VDC battery charger panel (2012)
2014 · BATTERY INCIDENT RESPONSE

Cracked cell containers on the 220 VDC battery.

EDPN site photos, April 2014 — survey followed by capacity testing.

Hoppecke OPzV cell with a cracked container (2014)
Hoppecke OPzV cell with a cracked container (2014)
Cracked containers along the battery string (2014)
Cracked containers along the battery string (2014)
Cells removed from service for inspection (2014)
Cells removed from service for inspection (2014)
Hoppecke OPzV cell top (2014)
Hoppecke OPzV cell top (2014)
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