In September, the country’s electricity supply and demand balance was on the whole, generating 394.48 billion kilowatt-hours of electricity in the entire month. Inter-regional trading channel transmission 15.26 billion kwh. The top five provinces that received the electricity were Guangdong, Zhejiang, Liaoning, Shanghai and Shandong; the provinces that sent the top five were Hubei, Yunnan, Sichuan, Guizhou and Mengxi.
I. Electricity supply and demand
In September, the country’s electricity supply was sufficient. According to the dispatch daily, the whole month will generate 394.48 billion kilowatt-hours of electricity, the average daily electricity will generate 13.15 billion kilowatt-hours, the maximum daily electricity will be 13.823 billion kilowatt-hours (Sept. 1), and the daily maximum load will be 58.82 million kilowatts (on September 1). Adjust the average daily load of 550.04 million kilowatts.
Cumulative power generation in the third quarter was 1280.561 billion kWh, and the cumulative annual power generation was 3.6479.27 billion kWh. In the third quarter, the two major river basins of the Yangtze River and the Yellow River were flooded with large amounts of hydropower, and the capacity of thermal power plants was largely halted.
Second, the provincial purchase and sale of electricity
In September, the province’s electricity consumption, power generation, and the top five received and delivered electricity all decreased compared with the previous month in August. The top five provinces in terms of electricity consumption were Guangdong, Jiangsu, Shandong, Beijing-Tianjin-Tangshan, and Zhejiang. Among them, Beijing-Tianjin-Tangshan province advanced by one in August, and Zhejiang retreated by one; the top five power generation provinces were Jiangsu and Guangdong. , Shandong, Beijing-Tianjin-Tangshan, and Hubei, of which Beijing-Tianjin-Tangshan advances one place from August, and Hubei retreated one place; the top five provinces that received electricity were Guangdong, Zhejiang, Liaoning, Shanghai, and Shandong; the top five were sent out. The provinces were Hubei, Yunnan, Sichuan, Guizhou and Mengxi, in which Yunnan advanced one place in August and Sichuan one place.
In the third quarter, the top five provinces in terms of electricity consumption were Guangdong, Jiangsu, Shandong, Zhejiang, and Beijing-Tianjin-Tangshan; the top five provinces in terms of electricity generation were Jiangsu, Guangdong, Shandong, Hubei and Beijing-Tianjin-Tangzhou; The provinces that followed were Guangdong, Zhejiang, Liaoning, Shanghai, and Shandong; the provinces that sent the top five were Hubei, Sichuan, Yunnan, Guizhou, and Mengxi.
In September, the five provinces with higher proportions of electricity consumed by electricity were ranked as Shanghai, Liaoning, Guangdong, Zhejiang and Chongqing in sequence, of which Shanghai advanced two places in August, and Liaoning and Guangdong each one. The ratio of output power to power generation was relatively low. The top five provinces were Hubei, Yunnan, Guizhou, Sichuan, and Ningxia. Ningxia sent a significant increase of 1.422 billion kWh to the top five.
In the third quarter, the five provinces with a higher proportion of electricity consumed by electricity were ranked as Shanghai, Guangdong, Liaoning, Zhejiang, and Chongqing; the five provinces with a higher proportion of electricity output were Hubei, Yunnan, Guizhou, Sichuan, and Qinghai.
Third, the key cross-regional channel transactions
(a) channel utilization
In September, the trans-regional exchange of key transactions channeled 15.26 billion kwh, of which Huazhong sent the largest amount of electricity in East China, reaching 8.138 billion kwh, accounting for 53.30% of the trans-regional transactional electricity. The maximum utilization rate of Longzheng and Yihua DC sent from Huazhong to the East China Channel, and that from the northwest to the North China Channel reached 100%. The maximum utilization rate of the northwest channel sent by the State Grid to the South and Central China is over 95%. The maximum utilization rate of the lines sent from Huazhong to North China UHV and Huazhong to East China was low.
In the third quarter, the trans-regional exchange of key transactions channeled 50.839 billion kwh. Huazhong sent the largest amount of electricity to East China, which was 27.998 billion kWh, accounting for 55.07% of the transaction volume of the trans-regional transaction. Among them, the State Grid sent the south and northwest to China Central Access Channel with higher utilization hours, all exceeding 2000 hours; Central China sent to North China and Northeast China to North China. Some of the channels used by Huazhong to send fire to East China are not high enough, and are less than 1,500 hours.
(II) Completion of cross-district transaction plans
In September, the mutual exchange between northwest and central China and Central China sent north China to complete the monthly transaction plan. Huazhong sent Huadong and Northeast China to North China without completing the transaction plan. Among them, the northeast sent to North China was affected by the unexpected construction of the project expansion, and the transaction plan completion rate was less than 30%. .
In the third quarter, mutual supply in the northwest and central China, Huazhong in North China, and Central China sent the East to complete its quarterly trading plan. Huazhong sent the North China Exchange UHV cross-district trading plan to 423.98%; Huazhong sent Huadong trading plan to 157.17%. The amount of mutual power supplied by Central China to Central China is basically balanced. Northeast China sent North China transactions to uncompleted trading plans.
A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flow into torque and angular displacement (rotation). The hydraulic motor is the rotary counterpart of the Hydraulic Cylinder as a linear actuator. Most broadly, the category of devices called hydraulic motors has sometimes included those that run on hydropower (namely, water engines and water motors) but in today's terminology the name usually refers more specifically to motors that use hydraulic fluid as part of closed hydraulic circuits in modern hydraulic machinery.
Conceptually, a hydraulic motor should be interchangeable with a hydraulic pump because it performs the opposite function - similar to the way a DC electric motor is theoretically interchangeable with a DC electrical generator. However, many hydraulic pumps cannot be used as hydraulic motors because they cannot be backdriven. Also, a hydraulic motor is usually designed for working pressure at both sides of the motor, whereas most hydraulic pumps rely on low pressure provided from the reservoir at the input side and would leak fluid when abused as a motor.[1]
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