The State Power Investment Corporation Shenquan II Offshore Wind Power Project ( "Shenquan II Project") has successfully achieved full capacity grid-connected power generation recently. This project is the offshore wind power project with the largest single unit capacity in batch application in the world, and is also the first large-scale application of 66 kV zero-carbon fluorine-free environment-friendly gas insulated switchgear (66 kV Blue GIS) in offshore wind power by Siemens Energy.

Shenquan II Project is located in the southern sea area of Shenquan Town, Huilai County, Jieyang City, Guangdong Province, with a total installed capacity of 502 MW, 16 8 MW and 34 11 MW wind turbines installed, a supporting offshore booster station built, and 66 kV submarine cable laid for the first time.

Siemens Energy Ester Oil Transformer

After the Shenquan II project is put into operation, it is expected to provide 1.743 billion kilowatt-hours of clean electricity annually to the Guangdong-Hong Kong-Macao Greater Bay Area, meeting the annual electricity demand of nearly 900000 households, reducing the consumption of standard coal by about 527000 tons and reducing carbon dioxide emissions by about 1.4 million tons, which will effectively increase the proportion of green energy and inject new impetus into the low-carbon economic development of the Greater Bay Area.

The 36 sets of 66 kV Blue GIS equipment supplied by Siemens Energy use 100% fluorine-free clean air insulation technology, which will not pollute the air or marine environment by generating additional fluorine-containing gases and carbon dioxide emissions, nor will it pose a health hazard to equipment operators. According to the normal leakage rate of the national standard, the 36 equipments can reduce 7303 tons of carbon dioxide emissions in the whole life cycle, which will contribute to the promotion of zero carbon emissions and sustainable development.

Siemens Energy 66 kV Blue GIS Equipment

At the same time, offshore wind farms need safe and reliable transformers to ensure stable operation. Siemens Energy provides efficient and reliable ester oil transformers for wind turbines. They have compact structure, light weight, strong corrosion resistance and excellent seismic performance, and can be installed in the wind turbine nacelle or tower, especially in the offshore environment.

In addition, the transformer replaces the traditional mineral oil with natural synthetic ester insulating oil with high ignition point and biodegradability, which makes the operation of the equipment more environmentally friendly and safe, and the operation loss is far below the requirement of China's national standards, thus ensuring the stable, safe, efficient and environmentally friendly grid-connected operation of Shenquan II Project.

国家电投神泉二海上风电项目（“神泉二项目”）于近日顺利实现全容量并网发电。该项目是全球批量应用单机容量最大的海上风电项目，也是西门子能源首次将66 kV零碳无氟环保型气体绝缘开关设备（66 kV Blue GIS）规模化应用在海上风电的项目。

神泉二项目位于广东省揭阳市惠来县神泉镇南面海域，总装机容量502兆瓦，安装16台8兆瓦、34台11兆瓦风机，配套建设1座海上升压站，并首次接入敷设66千伏海缆。

西门子能源为该项目风电机组提供36台66 kV Blue GIS和36台酯类油变压器，为海上升压站提供220 kV和66 kV气体绝缘开关设备各一套、220 kV/270 MVA变压器两台，在全面助力海上风电场集电系统迈向更高的66 kV电压等级的同时，满足项目清洁供电与碳减排的要求。

西门子能源酯类油变压器

神泉二项目投产后预计每年可向粤港澳大湾区提供清洁电力17.43亿千瓦时，满足近90万家庭一年的用电需求，减少标煤消耗约52.7万吨、减少二氧化碳排放量约为140万吨，将有效提升绿色能源占比，为大湾区经济低碳发展注入新动力。

西门子能源提供的36台66 kV Blue GIS设备采用100%无氟洁净空气绝缘技术，不会额外产生含氟气体与二氧化碳排放而对空气或者海洋环境造成污染，也不会对设备操作人员造成健康危害。按照国家标准的正常泄漏率算，这36台设备全生命周期总共可以减少7303吨二氧化碳排放量，为推动零碳排放、可持续发展添砖加瓦。

西门子能源66 kV Blue GIS设备

同时，海上风电场需要安全可靠的变压器以确保稳定运行。西门子能源为风力发电机组提供高效可靠的酯类油变压器。它们结构紧凑、重量轻，抗腐蚀能力强、抗震性能优异，可安装在风电机舱或塔筒内，尤其适用海上环境。

此外，该变压器由高燃点、可生物降解的天然合成酯绝缘油替代传统矿物油，设备运行更加环保、安全，运行损耗远低于中国国家标准要求值，确保神泉二项目实现稳定、安全、高效和环保的并网运行。