A Yuchai 12VC 1000KW containerized diesel generator set was supplied to the Nagqu heat source plant in Tibet, at about 4500m altitude, as backup power for the centralized heating system.
1. Background: Nagqu and Its Heating Plant
Nagqu, on the northern Tibetan Plateau, averages over 4500m with winter lows near -30°C - among the harshest inhabited climates on the planet. Its district heating plant (built as one of the world's highest heat-source facilities) circulates hot water to tens of thousands of residents through a network of pumps, valves and control systems. If the grid drops in deep winter and the circulating pumps stop, pipes freeze and the whole network is at risk. Backup power for the heating plant is therefore a public-safety necessity, not a convenience.
2. Why One 1000KW Container Set
The set auto-starts on a power outage and immediately carries the heating plant's circulation pumps, make-up water pumps and control cabinets, keeping hot water moving until utility supply returns. Its heated, sealed container lets it crank reliably in extreme cold - exactly the condition Nagqu faces for months each year, where even a brief pump stoppage risks frozen mains.
3. Key Technical Specifications
· Engine: Yuchai 12VC, 12-cylinder V-type diesel
· Rated Power: 1000 kW
· Altitude rating: de-rated for ~4500m operation
· Configuration: weatherproof container, heated enclosure
· Voltage: high-voltage direct connection
· Rated Speed: 1500 r/min
· Rated Frequency: 50 Hz
· Control: automatic start on mains failure, AVR voltage regulation
4. Operational Value Since Commissioning
By keeping circulation alive during outages, the set protects the entire district-heating network from freeze damage and ensures residents stay warm through winter grid interruptions - a textbook use of selective backup for a life-safety-critical utility.
5. Frequently Asked Questions (FAQ)
Q: Why does a heating plant need a generator?
A: The pumps that move hot water must never stop in winter, or the network freezes. Backup generation keeps circulation alive during outages.
Q: How does 4500m altitude affect the set?
A: Like the Nima case, output is de-rated for thin air and the unit gets cold-start and heating provisions for plateau winters.
Q: Is 1000KW enough?
A: It covers the essential pumping and control loads that must stay on - the standard selective-backup approach for a heating plant.