The First UHV Power Transmission Channel in Northeast China Launched

On 15th October, Jarud Banner-Qingzhou ¡À800kV UHV DC project went through the first phase of DC system testing. Three converters (a rated power transmission capacity of 3¡Á2.5GW) were put into operation in sending and receiving ends, marking the establishment of Northeast China¡¯s first UHV channel for power transmission, and a significant breakthrough of SGCC in implementing the state strategic plan for revitalizing the old industrial base and promoting the coordinated power development in Northeast China.

The project links power grid in Northeast China with load centers in Shandong. It adopts world-leading new technology of ¡°a rated voltage of ¡À800kV, a rated power of 10GW and hierarchical connection into 500kV/1000kV AC power grids on the receiving end¡±. The project is a solution to the power surplus, curtailments of wind and grid operation during heating seasons. It is of great significance in revitalizing the economy of Northeast China, safeguarding reliable power supply in North China and mitigating air environmental pollution. As a major project concerning political stability and people¡¯s well-being, it is of huge external demands and gains great concern from within and outside of SGCC.

After getting the approval of the central government on 16th August 2016, SGCC mobilized its best resources, undertook strict design and quality control, and streamlined the input and management processes to deliver the project in a safe, quality and timely and efficient manner. Bearing in mind the interest of the country and the people, related units and departments of SGCC demonstrated the spirits of responsibility, innovation, painstaking planning, coordination and courage against the harsh nature, construction difficulties, time limit and external complexity.

On 28th September, 2017, the project undertook the first phase of system testing. Through 17 days of continuous hard work including the National Day and the Mid-Autumn Festival Holidays, the construction, testing, dispatching and operation units and departments completed all 295 tests. The 3 converters in the converter station of each end and the transmission line successfully passed the severe test and could be put into operation. All major equipment went through the test and all converters were unlocked, showing good quality. The project demonstrated excellent performance and safe and stable operation, meeting the designed expectation.

Jarud Banner-Qingzhou Project starts with Jarud converter station in Tongliao, Inner Mongolia and ends in Qingzhou converter station in Weifang, Shandong Province. It runs through four provinces (municipalities and autonomous regions) including Inner Mongolia, Hebei, Tianjin and Shandong with a total line length of 1,234km, a rated capacity of 10GW and an investment of 22.1 billion yuan. The project is expected to be officially put into operation in December.

Source: Department of DC Transmission Project, SGCC; State Grid News

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