How to alleviate the power supply pressure caused by cold wave in power sector?

Since the beginning of winter, China's electricity consumption level has been rising continuously, with the national average daily power generation reaching19129 million kwh, and the highest daily power generation reaching 20 1 100 million kwh, an increase of10.5% compared with last winter's maximum, which is a record high in winter. The power load of the northeast and northwest regional power grids of the State Grid Corporation and the power grids of Hunan, Liaoning and Jilin provinces reached a record high. Affected by factors such as low temperature cold wave and power coal supply, power supply in Hebei, Jiangsu, Henan, Hunan, Jiangxi and other power grids is tight.

Since the first ten days of June 5438+ 10, there have been two rounds of large-scale low-temperature rain and snow weather processes in the State Grid, and the lowest temperatures in some areas of Shaanxi, Henan, Hubei and Anhui are close to or exceed the historical extremes in the same period. Heavy snowstorms occurred in parts of East China, Central China, Northwest China and Southwest China, freezing rain occurred in some mountainous areas, and some transmission lines were covered with ice. During this period, the DC line of UHV Jinsu (Jinping-Sunan) was deiced for 5 times, and the 500 kV AC line stopped deicing for 22 times. The DC step-down operation of Binjin, Fufeng, Jinsu and Shao Qi was arranged for many times to ensure the safe operation of power transmission and transformation equipment.

During the period of balance tension in East China, the National Dispatching Center took measures such as increasing hydropower in Central China and Southwest China and thermal power in North China and Northwest China, and made full use of cross-regional and inter-provincial channels to increase DC power transmission in East China, effectively alleviating the power shortage during the cold wave. Wang Yuling said that in order to ensure the safety and stability of the power grid and the reliable supply of electricity, load forecasting will be strengthened, and power and power balance analysis will be made according to weather conditions. At the same time, strengthen the reserve management of power grid, and leave enough necessary rotation reserve capacity in operation. When there is local balance tension, make full use of cross-regional and inter-provincial channels for power support and flexibly adjust the surplus and deficiency. Closely track weather changes and geological disasters, strengthen communication with meteorological departments, timely issue disaster early warning and power grid operation risk early warning, strengthen pre-control measures to deal with bad weather and abnormal equipment, implement the requirements of coordination specifications for power grid fault handling of regulatory agencies at or above the provincial level, and improve fault handling plans in a rolling manner.