“Peaking summer peaks” exacerbates China’s power shortages

China, which ushered in a wave of electricity shortages in advance in May this year, is even more severe after entering the midsummer in July. The power grids across the country formally entered the summer to prepare for the emergency status in the summer. Many provinces and cities reported that the highest value of the power load was continuously refreshed, and tens of thousands of companies were listed in the peak-to-peak power-reduction scheme to ensure adequate electricity use by residents. . This situation is forcing a large number of enterprises to use technology to reduce their consumption and to survive.

Affected by continuous high-temperature weather for consecutive days, the maximum power load in Hefei, Anhui Province, reached more than 2.7 million kilowatts by the end of July, setting a record high.

Magang (Hefei), a local backbone steel company with more than 50 years of history, is facing a significant impact. Qin Changrong, general manager of the company, said that this year's electricity consumption peak came early, in May there was a round of power cuts, one third of the company's rolling line had to suspend production. With the advent of high temperatures in the summer, companies will also face more severe power supply tests. The company has been included in the list of power grids to avoid peaks and power cuts, and there may be more production lines that stop production.

"The price of steel is the same as a day, and steel production is not divided into high seasons. There is no doubt that power cuts will bring serious losses to the company." Qin Changrong said with resignation.

The reporter learned from the "Anhui Power Grid 2011 Orderly Electricity Use Plan" that this year the province will have a power gap of 2.5 million kilowatts or more, and the province will select 2,352 large-loaded, high-energy-consuming and non-key enterprises to participate in the fault avoidance and Pulling power restrictions, this number was only 400 last year and was limited to high-energy-consuming enterprises.

Hefei Evergreen Machinery Manufacturing Co., Ltd., which is engaged in the production of automotive stampings, is also among them. Mr. Chen, the company’s general manager, said: “In May this year, we stopped several times during the summer. During the peak season, we may have to change most of our production at night.”

The Yangtze River Delta, where China's most economically active region is located in Anhui Province, and its neighboring provinces, Jiangsu, Shanghai, Zhejiang, Fujian, and other provinces and cities have the most unsatisfactory power situation this summer. According to forecasts by East China Power Grid Corporation, which administers these four provinces and one city, the power gap of the electricity consumption peaks in East China this summer is expected to reach around 19 million kilowatts, which may be the most difficult year in recent years.

From a nationwide perspective, the relevant person in charge of the State Grid Corporation had previously informed that if electricity supply continues to be the current trend, the contradiction between China's electricity supply and demand during the summer peak season will further intensify, and it is expected that the electricity gap will increase to 30 million to 40 million. kilowatt.

Industry analysts pointed out that in addition to the strong demand for electricity and insufficient hydropower in some areas, the original tight power supply problem has further deteriorated this year. The main reason is that the electricity pricing mechanism has not been straightened out. "Market coal, planning electricity", thermal power companies more power losses, the production enthusiasm was hit. In some places, coal-fired power companies have stopped operating in the absence of coal or shut down under the name of maintenance. The majority of thermal power production capacity has not been fully realized.

Zhang Haige, deputy director of the Economic and Information Commission of Anhui Province, further pointed out that the tight supply of power coal has also widened the gap between electricity supply and demand. Over the years, Anhui Province has been a net province for coal, but this year has seen a reversal. From January to May of this year, raw coal output in Anhui Province increased by 2.2%, while electricity generation increased by 15.8%. Coal growth is far behind the growth rate of power generation. It is estimated that this year, the coal coal shortage in Anhui Province will reach 8 million tons, becoming a net transfer of coal to the province.

In the face of this raging "electricity shortage", many manufacturing companies will fall into the trap of stoppages and production cuts. From the economically developed coastal areas to the underdeveloped western regions, a large number of Chinese enterprises have invested in effective energy conservation and consumption reduction, product upgrading, and technological transformation in order to obtain a better living environment.

Qin Changrong stated that Masteel (Hefei) Company has actively promoted energy-saving technological reform in recent years. In the past five years, the electricity consumption per ton of steel produced has been reduced from 440 kWh to 370 kWh.

The energy saving and emission reduction technologies adopted by Yangzhou Air-conditioner Co., Ltd. in Anhui Province are even more refreshing. The conventional production workshops are often tens of thousands of square meters in height and ten meters in height, and the air-conditioning energy consumption is high and the effect cannot be achieved. In order to solve this problem, they collected rainwater from the roof in summer and sprayed the atomized water through the air duct through the air duct to each station of the fully automatic assembly line in the summer, which can cool the heat, and can also ventilate and breathe. Compared with the installation of conventional air conditioning, 40% of the electricity is saved and 210,000 kilowatt-hours of electricity are saved during the summer.

Hangzhou Dalifu Silk Dyeing and Finishing Co., Ltd. in the Yangtze River Delta has recently implemented transformation projects to phase out high-energy-consuming equipment. The power consumption exceeded 10,000 degrees per day during the peak season last year, and the entire company currently uses less than 4000 degrees of electricity per day.

Qinghai Xinyu Silicon Industry Co., Ltd., located in the northwest of China, is currently recovering flue gas and dust generated in the submerged arc furnace through the flue to the environmental protection facilities to build waste heat power generation facilities to maximize resource utilization and energy conservation and emission reduction benefits. Achieve 20% energy savings.

Economic experts pointed out that under the “Limiting Electricity Regulations”, more companies must strengthen their technical reforms to “strengthen internal strength” and accelerate the transformation of production methods. From low-end, high-energy-consuming production to high-end clean manufacturing, it is the company’s ultimate outlet.