Mingtan Dam

Mingtan
	Mingtan dam with reservoir
Location:	Nantou County , Taiwan
Tributaries:	Shuili Xi
Drain:	Shuili Xi → Zhuoshui
	Taiwan
Coordinates	23 ° 50 '11 " N , 120 ° 52' 4" E Coordinates: 23 ° 50 '11 " N , 120 ° 52' 4" E
	Data on the structure
Lock type:	Gravity dam
Construction time:	1987-1995
Height of the barrier structure :	61.5 m
Crown length:	314 m
Power plant output:	1 600 MW
Operator:	Taiwan Power Company
	Data on the reservoir
Water surface	65.0 ha
Storage space	14.4 million m³
Total storage space :	11.43 million m³
Catchment area	2045.0 ha

The Mingtan Dam ( Chinese 明潭大壩 , Pinyin Míngtán dàbà ) is a dam with an attached pumped storage power plant in the municipality of Shuili in central Taiwan .

Location and technical data

The Mingtan Dam dams the Shuili Xi (水里溪) river about 4 km below its outflow from the Sun-Moon Lake to the Mingtan Reservoir ( Chinese 明潭水庫 , Pinyin Míngtán shuǐkù ). The barrier structure is 61.5 m high and 314 m long and was completed in 1990. The dammed up reservoir is the lower basin of the Mingtan pumped storage power plant. When there is high demand for electricity, water to generate electricity is drained from the Sun-Moon Lake and flows into the Mingtan Reservoir, while when demand is low, water is pumped back. The nominal output of the power plant is 1600 MW with six turbines / generators with 266 MW each. Due to the use of the lake as a storage reservoir, the water level of the lake fluctuates considerably and can vary by up to 28 meters within a day. The reservoir and dam are a tourist destination and can also be easily reached by train from the nearby Checheng station on the Jiji Line .

When Jiji Earthquake of 1999 with a magnitude of Richter of 7.2 (according to the alternative magnitude scale 7.6) Mingtan had suffered a minimum of eight dam buildings, the damage, but they did not collapse.

Daguan 1 power plant

history

Plans and concepts for the use of hydropower in central Taiwan already existed during the Japanese colonial rule (1895–1945). For this purpose, the Sun-Moon Lake was filled in via a nearly 13.7 km long aqueduct from the higher-lying Wujie Reservoir , which increased the area of the lake from 3.18 km² to 7.73 km². Below the lake, the first Sun-Moon-Lake ( 日月潭第一發電所 ) power plant was opened in 1934, using the water from the Sun-Moon Lake, which is about 380 meters higher, to generate electricity. The building materials for the construction of the power station were transported by the previously built Jiji Railway . During the Second World War, the power plant was damaged by a bomb attack and put out of operation. After the end of the war, the island of Taiwan became part of the Republic of China , the power plant was repaired again and was named Daguan power plant in 1948 ( 大觀發電廠 - "power plant of the grandiose view"). From April 1981, when the Minghu power plant further upstream went into operation, it was named the Second Daguan Plant ( 大觀二廠 ), while the previous power plant functioned as the First Daguan Plant ( 大觀一廠 ). Starting in 1987, the operating company Taiwan Power Company ("Taipower") built today's Mingtan Dam and the associated Mingtan pumped storage plant, which went into operation in 1995. From this point on, the water not only flowed out of the Sun-Moon-Lake, but also back again when there was a surplus of electricity.

meaning

The two power plants Mingtan and Minghu play an important role in generating energy from hydropower in Taiwan. Annual electricity generation was around 5 billion kWh in 2013, which is around 56% of Taiwan's total hydropower generation. In the first few years after the Second World War, the power plant at that time even produced around 60 percent of all electrical energy in Taiwan.

and display information about the image

Mingtan Reservoir

Web links and sources

公務統計報表: 現有水庫概況 ("Official statistics report: overview of the existing reservoirs"). Taiwan Ministry of Interior: Water Resources Authority, accessed December 24, 2018 (English, Chinese, dam technical data; 106 年 = year 2017).

Commons : Mingtan Dam - collection of pictures, videos and audio files

Individual evidence

↑ Peter Foster, Grant Campbell: Nzsold Reconnaissance Report-Taiwan Dams. March 2000, accessed February 10, 2019 .
^ Minghu and Mingtan Reservoirs. (pdf) Taiwan Public Affairs Council, archived from original on July 24, 2011 ; accessed on February 10, 2019 .
↑ ^a ^b ^c 南投明潭發電廠 ("Mingtan Power Plant Nantou"). (pdf) Taiwan Power Company, accessed February 10, 2019 (Chinese).
^ RG Charlwood, TE Little, JK Lou: A Review of the Performance of Two Large Substations and Eight Large Dams During the Chi Chi Taiwan Earthquake . In: Institute for Catastrophic Loss Reduction (Ed.): ICLR Research Paper Series . No. 6 , April 2000, pp. 1–16 (English, pdf ).

[Nzsold-1] Peter Foster, Grant Campbell: Nzsold Reconnaissance Report-Taiwan Dams. March 2000, accessed February 10, 2019 .

[2] Minghu and Mingtan Reservoirs. (pdf) Taiwan Public Affairs Council, archived from original on July 24, 2011 ; accessed on February 10, 2019 .

[taipower-3] 南投明潭發電廠 ("Mingtan Power Plant Nantou"). (pdf) Taiwan Power Company, accessed February 10, 2019 (Chinese).

[Institute-4] RG Charlwood, TE Little, JK Lou: A Review of the Performance of Two Large Substations and Eight Large Dams During the Chi Chi Taiwan Earthquake . In: Institute for Catastrophic Loss Reduction (Ed.): ICLR Research Paper Series . No. 6 , April 2000, pp. 1–16 (English, pdf ).