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Xiamen Island Infeed Project C-EPRI’s answer for the city of tomorrow
Xiamen Island Infeed Project
C-EPRI’s answer for the city of tomorrow
The 1000MW/±320kV Xiamen Island Infeed Project was successfully commissioned on December 17, 2015, making it the first bipolar and one of the largest VSC-HVDC infrastructures in the world.
Xiamen Island is the main part of Xiamen City in Southeast China’ s Fujian Province, and has high requirements for power quality and reliability. For lack of inland generations, all the loads on the island are fed by outside power sources. With the rapid economic growth of the island, the existing seven 220kV AC lines are becoming less sufficient for future demand.
SGCC’s solution is to transmit electricity from Xiamen mainland to Xiamen Island, using its latest ±320kV/1000MW VSC-HVDC technology, with two converter stations linked via 10.7km XLPE underground cables.
The entire project took only 24 months from its approval to commercial operation. The completion of this project not only secures an additional power source for the island but also effectively reinforces the existing power system with its reactive power
control features.
An innovative solution to secure reliable power supply and enhance system reliability
C-EPRI supplied converter valves for both end stations, with main work including design, engineering, supply, installation and commissioning.
This project has fully demonstrated China’s capability in large-power VSC-HVDC system design, equipment manufacture, project construction and system operation, and is becoming a second national business card to the world after its high-speed rail technology.
Project description
Commissioning time Dec. 2015
Rated capacity 1000MW
Rated DC voltage ±320kV
Cable length 10.7km
Key facts
HVDC Flexible is an HVDC solution and brand name of C-EPRI, based on voltage source converter (VSC). It makes use of insulated gate bipolar transistors (IGBTs) instead of thyristors for power conversion between AC and DC.
The benefits associated with HVDC Flexible include independent control of both active and reactive power, capability of feeding into passive networks, and inherent STATCOM functionality, etc. Therefore it offers an effective solution for renewable energy integration, supply for offshore loads, in-feed to city centres as well as multi-terminal interconnection.
C-EPRI initiated the research of HVDC Flexible technology as early as 2006. In July 2011, C-EPRI successfully delivered Nanhui Wind Farm Integration Project, China’s first VSC-HVDC scheme. In early 2013, the second generation of M2000 series VSC converter valve aiming at 1000MW/±320kV applications achieved an unprecedented success by passing all the type tests specified in IEC62501 with witness of DNV KEMA; it was then accredited by China’s National Energy Administration a few months later.
HVDC Flexible Technology
•Up to 1250MW/±420kV
•Suitable for offshore environment
•Easy and quick maintenance
•Unique “Push and Pull” submodule design
•Modular design of sub-module PSU makes free replacement possible
Deliver green power Shape future grid
Key features
Dec. 2013 Dec. 2015 Aug. 2014 Jul. 2014 Oct. 2015 Jan. 2015 Jul. 2015
5184 submodules 100% tested
78 valve towers erected
US$ 390M on Budget
465 Days Construction on Schedule
Developed & Made in China
C-EPRI Electric Power Engineering Co., Ltd. No. 16 Nanzhong Road, Changping District, Beijing 102200 P.R.China Phone: +86 10 66601721 Fax: +86 10 66601700 Email: [email protected]
www.cepri.com.cn
