Since 2011, the State Grid's smart substation initiative has experienced rapid growth, with 641 smart substations (excluding new-generation and standard distribution-type smart substations for special tenders) included in regular batch tenders. These tenders were conducted to maintain consistency in the ratio of smart versus traditional substations, and the statistics did not include 35kV voltage level projects. The number of smart substations increased by 14.1% compared to previous years. Although the growth rate slowed due to year-on-year comparisons, the overall volume of tenders remained substantial.
In the first halves of 2011, 2012, and 2013, the number of smart substation monitoring system tenders reached 284, 1,050, and 641 sets respectively. The smart substation rates were 23.2%, 60.9%, and 64.4%. Despite a drop in the third tender’s smart rate in 2013 (to 45.6%, down from 36.4% in 2012), the scale and smart rate of smart substation construction remained high. We believe that the intelligentization rate of State Grid’s centralized bidding projects in 2013 is expected to continue rising. This trend may be confirmed by the fourth batch of power transmission and transformation equipment tenders in 2013, which could signal a rebound in both the scale and smart rate of substation monitoring systems. Therefore, we maintain our view that the large-scale promotion of smart substations will drive sustained demand for products such as intelligent substation monitoring and relay protection systems.
In the first two batches of 2013 centralized bids (excluding special tenders), a total of 13 companies secured contracts. Of these, 12 won bids for intelligent control systems, while 11 secured contracts for traditional monitoring systems. Among the listed companies, Sifang Stock, Changyuan Group, and Guodian Nanrui had significant market shares, with their successful bids in the 110 (66) to 750kV smart and traditional substation markets exceeding 10%.
Another key feature of smart substation development in 2012 was the diversification of technology routes. In December 2012, the State Grid launched a new generation of smart substation demonstration projects, including six pilot sites: Chongqing Hechuan 220kV Dashichang, Wuhan Future Science and Technology City 110kV East Expansion, Tianjin 110kV High-tech Park, Beijing 220kV Future City Substation, and 110kV Seafall and Leaf Ponds in Shanghai. These projects were expected to be completed and put into operation by the end of 2013.
The new generation of smart substations emphasizes "integrated intelligent equipment and integrated business systems," marking a shift from professional design to integrated design. It also moves from one-device intelligence to fully intelligent primary equipment, incorporating advanced and applicable technologies. Shen Guorong, an academician of the Chinese Academy of Engineering, summarized the characteristics of the new generation of power transformation technologies as "a highly integrated system, rational structural layout, advanced and applicable equipment, and economical energy conservation and environmental protection."
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