New energy distributed condenser "settled" in Qinghai to increase the consumption of new energy by 1.85 million kilowatts

Compared with conventional condensers, the performance of distributed condensers needs to be improved by more than 30%, and the unit loss needs to be reduced by 20%. At the beginning of the design of distributed condensers in my country, modular and integrated design concepts were introduced, the electromagnetic design, structural design, and material selection standards were deeply optimized to create a distributed condenser with both performance and economy. In addition, compared with traditional reactive power compensation devices, distributed condensers have the advantages of strong voltage support capability at fault instants and fast transient response. They are known as the "voltage stabilizers" of the power grid and will be a high proportion of new energy power in the future. important part of the system.

Nowadays, distributed condensers have been widely used on the "grid side", while the "power side" application has not been realized before. Recently, new progress has been made in the "power side" application of distributed condensers. On November 8, 11 new energy distributed condensers were put into use in Qinghai Hainan's 10-million-kilowatt new energy base, which can increase local new energy consumption capacity by 1.85 million kilowatts.

The distributed condenser installed this time is a highly integrated, small-capacity synchronous phase modulation equipment arranged in a new energy power station. It is used to strengthen the transmission end near-area system. Voltage support plays an important role in maintaining the voltage stability of the power system. It can also increase the short-circuit capacity and short-circuit ratio of the system, effectively support the large-scale transmission of new energy, and ensure the safe and stable operation of large power grids. Compared with traditional large-scale condensers built on the main grid side, this batch of new energy distributed condensers have excellent transient and steady-state characteristics, reactive power adjustment capabilities, high integration, simple system, short construction period, and good adjustment performance. Many advantages.

It is worth noting that the settlement of this batch of new energy distributed condensers in Qinghai can be said to be traceable. Qinghai Province relies on Qinghai's natural resource endowment advantages to actively develop the new energy industry, moving from "prosperity" to "unlimited prosperity". As of the end of October 2021, Qinghai Power Grid's total installed capacity was 40.615 million kilowatts, of which new energy installed capacity was 25.074 million kilowatts, accounting for 61.7%. Qinghai has become the province with the largest proportion of new energy installed capacity and centralized photovoltaic power generation in the country.

Qinghai Province is uniquely endowed with new energy sources such as solar energy and wind energy. New energy power generation accounts for a high proportion, but conventional power supply installationsProblems such as small machine scale and relatively weak voltage support capabilities also restrict the large-scale development and utilization of new energy. In this regard, as early as 2019, the State Grid Corporation of China organized a special project to coordinate the National Electric Power Dispatching and Control Center, together with planning and design and other departments, proposed four new energy collection stations in Xinyang, Xiayang, Xuming, and Zhuyu in Qinghai and Hainan. The solution of installing 21 distributed condensers is designed to ensure the safe and stable operation of the power grid and greatly improve the level of new energy transmission.

The Qinghai Hainan distributed condenser project will officially start equipment installation in May 2021. In view of the intermittent, random and volatile characteristics of new energy, the staff adopted the method of installing small distributed condensers on the power supply side, which will help the safe and stable operation of DC transmission, steadily increase the proportion of new energy in the energy structure, and help Promote "carbon peaking and carbon neutrality" in the electric power sector.

It is expected that by the end of 2021, all 21 distributed condensers will be put into operation, which will increase the new energy transmission capacity of Qinghai and Hainan by 3.5 million kilowatts, and it is expected that the annual average additional new energy power generation will be 7.02 billion. kilowatt-hour, which is equivalent to reducing coal burning by 3.189 million tons and reducing carbon dioxide emissions by 5.742 million tons. The energy saving and emission reduction effect is significant.

　(Original title: New energy distributed condenser "settled" in Qinghai to increase the consumption of new energy by 1.85 million kilowatts)