The global
aim to reach net zero emissions is becoming increasingly widespread, China pays
more attention on developing renewable power. Below graph displays the total
installed renewable power generation capacity in China in 2020 and a forecast
for 2025, 2035 and 2050. In 2050, the total renewable energy generation
capacity installed in China was forecasted to amount to approximately 6,142 GW
based on a below two-degree Celsius scenario.
Data from: China: total renewable power generation installed capacity forecast 2020-2050 | Statista
While increasing energy generation from cleaner sources demands an increase in transmission and distribution networks. Wind farms often require significant real estate and are therefore built far from urban centers in remote areas where land is cheap and available, and so the ability to move the electricity generated to urban load centers through the electric grid is crucial. Any attempt to increase energy generation from cleaner sources needs to be accompanied by an increase in transmission and distribution networks. An inadequate transmission and distribution network leads to constant congestion and curtailment issues, which affect the economic viability of projects.
China's
power transmission losses amount to around five percent of total production
output. In 2021, around 5.26 percent of all power generated was lost owing to
transmission and distribution resistance. This was the lowest figure in the
period of consideration and follows years of network improvement. So it is of importance that transmitting energy
to the grid and the ability to dispatch that electricity to end consumers.
Data from: China: electricity transmission losses 2021 | Statista
Therefore, it is the development trend of future transmission technology to improve the stability of transmission engineering and reduce the probability of failure. Due to a large geographical area and a large coverage area of the power grid, there are many power grids that operate in parallel with AC and DC. After years of operation, certain experience has been gained. With the construction of DC transmission projects in recent years, AC-DC parallel operation systems will inevitably face more complex problems. Improving the stability of the whole transmission system is an important issue in the development of transmission.
