Even the biggest success Starts with a first step

06/09/2013 - SGCC Has the World’s Fastest Growth in PV Power with Its Support for New Energy Integration

  • By the end of July, 5.95GW of PV-generated electricity has been connected to the grid within SGCC’s operating area, with a year-on-year increase of 134%. Since February this year, the company has accepted 625 distributed PV grid interconnection applications with a total installed capacity of 1.31GW. SGCC’s PV generation grew fastest in the world.

    Since State Council attached great importance to the development of PV industry, with issuing a number of opinions on promoting the healthy development of the industry and proposing to achieve the total installed PV generation capacity of 35GW in 2015, PV industry ushers in an important opportunity to accelerate the generation and improve the grid interconnection service.

    In recent years, the company actively supports the development of solar and other new energies, unifies workflows, technical specifications and service standards and strengthens the whole process management on grid interconnection, transaction and accommodation. Under the unified guidance, all the affiliated units speeded up the auxiliary grids’ construction in accordance with local conditions, and improved service and enhanced the technical supporting capacity, which strongly promoted the PV development.

    SGCC held a press conference to support the development of distributed power in February and released the Guideline on Integration Service for Distributed Power following the old version in October 2012. All the company’s affiliated units should efficiently serve the integration of distributed power with a common counter according to the four unifications (unified management mode, technical specifications, workflows and service standards).

    Qinghai is China’s important PV industrial base and solar power base. By the end of August, nearly 80 large and centralized integrated PV plants have been built with a total installed capacity of 2.03GW, including China's first solar thermal power project. Among them, the installed capacity of Qaidam Basin is 1.693GW, accounting for 84.5% of the whole province. The new PV plants in Hainan and Haibei Tibetan Autonomous Regions of Qinghai have been completed this year.

    To adapt to the changes brought by the large-scale PV plants’ interconnection, State Grid Qinghai Electric Power Company improved the service in prophase, acceptance check and grid interconnection, and finished the construction of the 750kV second channel between Xinjiang and the Northwest main grid, Qaidam No.1 main transformer expansion project and PV collection and transmission projects in Golmud, Delhi and Hainan, optimizing the grid’s capacity of resource allocation. Meanwhile, the company, along with State Power Economic Research Institute and China Electric Power Research Institute (CEPRI), launched a special research on Qinghai power supply and PV power accommodation, providing a scientific basis for Qinghai’s PV arrangement and accommodation.

    At present, Qinghai Electric Power Company is accelerating the construction of 750kV Gonghe-Xining line. It has launched the preparatory work of the grid’s thirteenth Five-Year Plan with optimizing the grid operation mode and coordinating the conventional power and regional PV operation.

    On August 30, State Grid Heilongjiang Electric Power Company held a press conference on supporting the development of distributed PV generation. During the conference, the company made appropriate interpretations and commitments related to the problems of grid interconnection applications and distributed photovoltaic definition, and promised to provide free service of integration planning, interconnection testing and debugging including scattered access to the low-voltage distribution grid. It clearly indicated to simplify management and make it easier for customers’ coordination and opened up a green channel to invest in public power grids’ alteration and interconnection.

    By the end of August, Heilongjiang Electric Power Company had handled more than 30 pieces of distributed PV generation consultations and 5 installations of distributed PV generation with a total capacity of 7.1MW. The under-construction capacity to be integrated is 66MW.

    CEPRI, as SGCC’s major scientific and technological support, carried out a lot of fruitful work in PV interconnection service. Relying on the National Energy Solar Center (NESC), CEPRI fully served the PV interconnection in scientific research and testing. By August 31, NESC has completed 166 tests on all types of PV inverters home and abroad. According to the statistic, nearly 90% of the operating and integrated PV inverters in constructed large-scale terrestrial PV stations in China have passed CEPRI’s low voltage pass-through test. (Zeng Huijuan, Sang Xueyong, Zhang Yifei, Chang Bingyu)

  • Source: State Grid News

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