General Electric Co., Ltd. recently announced that the first phase of the Japan Central Electric Power Co., Ltd. West Nagoya Power Plant (hereinafter referred to as the West Nagoya Power Plant) equipped with GE 7HA gas turbines has measured the efficiency of the whole plant with a combined cycle of 63.08%. It was recognized by the Guinness Book of Records as the most efficient in the world. Combined cycle power plant.
GE, Siemens, Mitsubishi, are the three giants in the global heavy-duty gas turbine market. According to official website data, GE currently has 4 air-cooled HA-class heavy-duty gas turbine products: 9HA.01 and 9HA.02 gas turbines cover the 50-Hz power generation market, 7HA.01 and 7HA.02 gas turbine covers the 60 Hz power generation market.
As a type of internal combustion engine, a gas turbine is essentially a type of machine that produces gas through the combustion of fuel (mainly natural gas) and air to push the blades to do work. According to the temperature of the combustion chamber, the current mainstream models are E-class, F-class and Grade H. The advantage of gas turbines lies in the use of ladders. As a reference, the net efficiency of the rated operating conditions of the world's most advanced million-kilowatt ultra-supercritical coal-fired power units does not exceed 47%.
In June 2016, the world's first EDF Bushi Power Plant equipped with a GE 9HA gas turbine was certified by the Guinness Book of Records as the world's most efficient 50-Hz power plant with a measured plant cycle efficiency of 62.22%. GE said Currently, HA-class gas turbines are the most rapidly growing models of their installed capacity. To date, HA-class gas turbines have accumulated over 88,000 hours of operating experience.
Japan is currently in an energy transition. In the process of reconstructing the 40-year-old West Nagoya thermal power plant, Chubu Electric Power Co., Ltd. has selected a more efficient, flexible heavy-duty gas turbine, using a combined cycle configuration and using it. Liquefied natural gas (LNG) is used as a fuel to reduce nitrogen oxide emissions. GE provided a total of three sets of 7HA.01 units for the first phase of the West Nagoya Power Plant, with an installed capacity of 1188MW (1MW=1000KW), which can satisfy approximately 2.7 million Japan. Household electricity requirements. In addition to using GE's HA-class gas turbines, the Nagoya power plant also uses turbine and generator technology from Toshiba Energy Systems and Solutions.
According to reports, the GE 7HA gas turbine has a flexible choice of fuel and can use gas and liquid fuels including shale gas and liquefied natural gas. In addition, the 7HA gas turbine can achieve full-load operation from the shutdown in less than 30 minutes. Higher efficiency also means savings in fuel costs and lower CO2 emissions.
GE will also provide three 7HA.01 gas turbines for the second phase of the West Nagoya Power Plant, which is expected to be put into commercial operation by the end of March 2018. GE said that there will be more than 30 HA units in the world to achieve commercial operations in 2018.
However, with the growth of renewable energy supply, the gas turbine orders that industrial giants have received in recent years are not optimistic. The 2017 fiscal year report shows that the profits of the GE power sector where the gas turbine business is located have fallen by 45%, and the volume of gas turbine orders Declined compared to FY 2016. According to a report by Reuters in February this year, GE is studying the sale of its industrial gas turbine business for US$2 billion.