[Upstream and downstream of China's instrumentation network industry] The Hainan Inter-sea Network Two-Return Project started at the end of the year and has completed international bids for procurement of submarine cables and ancillary equipment. It is expected to begin construction at the end of the year.

Great progress has been made in the cross-harbor networking project that has attracted much attention. The reporter learned from Hainan Power Grid Company that the progress of the second round of the project has progressed smoothly and the completion of the construction of the project company and the international tendering for the procurement of 500 kV submarine cables and ancillary equipment have been completed. It is expected that construction will start at the end of the year.

With the first unit of the Hainan Changjiang nuclear power plant put into operation in 2015, Hainan will once again have problems such as “small machines and small networks” and difficult peak adjustments. The total investment of 3.283 billion yuan in cross-sea networking project is the "lifeline" linking Hainan Power Grid and China Southern Power Grid's main network. After the completion of the second project, an additional 600 MW of networked transmission capacity will be added to the networked one-time project to solve the problem of “large and small networks” in Hainan Power Grid, improve the safety and economic performance of Changjiang’s nuclear power units, and ensure the implementation of the national strategy for the South China Sea. strategy.

In June 2009, the first project of the Trans-Sea Network was completed and put into production, ending the history of the operation of the isolated network in Hainan Power Grid and improving the quality and reliability of power supply in Hainan Power Grid. In June 2013, the Hainan Provincial Government signed a four-party agreement with China Southern Power Grid, China National Nuclear Corporation, and Huaneng Group to promote the cross-sea interconnection project.

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