Clean energy is the main force of South Net West Power Transmission

Clean energy accounts for 70%; ChuSui DC is first tested for a long period of full-load operation and is fully loaded for 1,387 hours.

The reporter learned from the Ultra High Voltage Company that on December 31, 2012, on the occasion of the tenth anniversary of the establishment of China Southern Power Grid Corporation, the West Power Transmission Co., Ltd., which was operated and maintained by the UHV Co., Ltd., for the first time achieved a sales volume of more than 100 billion kwh, reaching 1005.2. Billion kWh. This means that the main grid of China Southern Power Grid has fully played its role in optimizing the allocation of large platforms for resources, and provided a strong support for the entire network to achieve its goal of “safety, growth, and stability” throughout the year. This also means that the transmission of electric power from west to east has opened a new chapter. With the successive launch of the “two-pass” direct current project in 2013, the transmission of electric power from west to east will enter the era of 100 billion kilowatt-hours.

In 2012, the annual sales volume of West-East Power Transmission reached 1005.2 billion kilowatt-hours, exceeding 19 billion kilowatt-hours in 2011. The clean and hydropower transmission of nearly 70 billion kwh fully reflects the outstanding advantages and unique values ​​of the main network grid of China Southern Power Grid for the full consumption of hydropower in the west and the optimized allocation of resources. It has made positive contributions to the implementation of national energy strategies and the promotion of social energy conservation and emission reduction. .

Since the beginning of 2012, West Power Transmission Co., Ltd. has faced a severe power transmission situation. The company proposed the deployment of “three catches, three guarantees, and four enhancements”, and the whole network will send a chess game to West Power Transmission. The UHP Company strengthened operation and maintenance management, strengthened equipment condition assessment, strengthened defect hidden trouble management, strengthened spare parts management, strengthened accident repair management, strengthened unplanned outage management, and focused on safe production through "six strengthening", and made every effort to secure the main network. Safe and reliable operation. Under the guidance of the relevant departments of the company, from August to December, the West Power Transmission Co., Ltd. started the “full-channel, full-time, heavy-load” power transmission and entered the “special power supply status” for up to 5 months. Based on the principle of grading, special control is implemented for 4 DC paths, and 1 level of control is implemented for 8 channels. Through detailed measures and the implementation of responsibilities, since the beginning of May, the amount of electricity sent from the West to East has continuously increased, and the historical record of single month electricity has been successively refreshed.

In the 150-day battle, the main grid has withstood the tests of long-term, heavy-load, and pressure-limiting operations. No DC bipolar blockage occurred in the year, and the number of single-pole latchups decreased by 3.4 times from the average level in the past five years, a decrease of 25%. . The comprehensive energy availability rate of the DC system was 96.82%, a record high, and an increase of 2.73% over the average of the past five years. Among them, Chusong DC's full-load operating time was 1,387 hours, a substantial increase of 33 times, and it underwent the test of long-term full-load operation for the first time. Tianguang DC energy utilization rate reached 99.3%, creating a world record for the energy availability of single-circuit DC systems.

According to reports, in 2012, including the Three Gorges and the Liyu River to send Guangdong electricity, the total transmission power of West-East Electricity Transmission to the east has exceeded 120 billion kWh. This figure was 96.9 billion kWh in 2011 and 111.6 billion in 2010. Kilowatt hours.