"The new energy grid connected real-time flexible control system with international leading level has greatly increased the power generation capacity of new energy, which has become an important reason for Qinghai's leading annual utilization hours of new energy power generation in China. "On July 13, Zhang jietan, deputy director of the Key Laboratory of photovoltaic grid connected technology in Qinghai Academy of electric power, introduced Hou Jianguo, Vice Minister of the Ministry of science and technology, who came to investigate.

The prominent feature of the new energy grid connected real-time flexible control system is "real-time", which realizes the real-time monitoring of the power flow, load and new energy output of the power grid section. On the premise of meeting the safe and stable operation of the power grid, it evaluates the transmission margin of each section in real time online, optimizes and adjusts the output plan of the new energy power station, and implements it in real time, so that the generation margin can be distributed to the capable power station at the next moment The new energy power station makes the new energy output maximization. The system was put into operation in June 2015 and generated 57 million kwh of additional electricity in the second half of that year. At present, the new energy generation rate in Qinghai Province has reached 8%, and the daily average new energy generation of the whole network is 600000 kwh, with an annual utilization of 1637 hours, ranking first in the country.

In addition, the new energy grid connected real-time flexible control system constructed and operated in the second phase also actively innovates the key technologies such as flexible control in the trading market and flexible control in the coordination of multiple power sources, so as to increase the new energy consumption by increasing inter provincial outward transaction and coordinating the output of different power sources.

The annual sunshine hours of photovoltaic in Qinghai are between 2500-3650 hours, and the annual total radiation reaches 6600-7200 MJ / m2, ranking second in China. At present, the photovoltaic power station in Qinghai has a power generation capacity of 22.187 billion kWh and an installed photovoltaic capacity of 6.08 million KW.

Since the establishment of the Key Laboratory of photovoltaic grid connected technology in July 2014, State Grid Qinghai electric power company has carried out demonstration research based on Qinghai million class photovoltaic power stations. From the perspective of realizing the adjustable and controllable after large-scale new energy access and improving the safe and stable operation of the system, it has developed new energy real-time flexible power control system and Qinghai large-scale photovoltaic power station grid connected operation control system The research and application of key technology of manufacturing and testing have reached the international leading level of software and hardware equipment.

Under the strong support of a series of scientific and technological innovation projects, Qinghai power grid has achieved 1 million kilowatts of photovoltaic grid connected consumption every year during the 12th Five Year Plan period. In the first half of 2016, 174 million kwh of new energy was exported to East China and central China through short-term and real-time transactions, and efforts were made to promote the consumption of new energy in a wider range of the country.

Xie Yuan, director of the science and Technology Department of Qinghai Province, believes that through the construction of the Key Laboratory of photovoltaic grid connected technology, Qinghai has built the first open, diversified, modern and full coverage photovoltaic industry research platform in China, comprehensively improving the soft power of large-scale development and application of photovoltaic resources in China.

According to Qinghai's 13th five year development plan and relying on mature and leading scientific and technological innovation achievements, Qinghai will build two 10 million kilowatt clean energy bases in Haixi and Hainan in 2020, with an installed capacity of 35 million kilowatts of new energy, including 24 million kilowatts of photovoltaic power, 7 million kilowatts of wind power and 4 million kilowatts of light and heat.

Original title: scientific and technological innovation to enhance the photovoltaic power consumption capacity of Qinghai Power Grid