MISSION: eMISsion-free HV and MV transmiSION switchgear for AC and DC

必须尽快减少化石燃料的使用和温室气体（GHG）的排放，以便到2050年实现气候中和社会。脱碳的一个重要前提是可再生能源的快速增长。到2050年，超过60%的电力预计将来自风能和太阳能，两者都比传统的火力发电要偏远得多。为了实现这一目标，欧洲和全球范围内可再生能源的高效电网整合需要开发大功率传输系统和组件，更具体地说，是中压直流（MVDC）和高压直流（HVDC）开关设备。在现有的电网中，MVAC和HVAC开关设备充满了绝缘气体SF6，这是世界上最有效的温室气体，全球变暖潜能值（GWP）为24300。由于气体处理过程中的泄漏或密封/隔室缺陷造成的sf6排放占电网业主温室气体排放总量的很大一部分。MISSION项目将根据tso定义的要求，开发和示范三种不含sf6的产品，作为气候中和电力传输的关键杠杆，填补未来混合ACDC电网的关键空白：无sf6 HVAC断路器将由西门子能源公司开发和型式测试，由挪威Statnett公司和法国RTE公司安装和演示，达到TRL 8,2。不含sf6的HVDC GIS将由德国西门子能源公司开发并进行型式测试，达到TRL 8,3。G&W将开发MVDC断路器并在相关环境中进行测试，达到TRL 6。此外，MISSION将确定不同sf6替代品的技术特性，用于高压和中压操作的交流和直流开关设备。MISSION将有助于实现无排放的能源传输和开关设备技术转型，以实现弹性和可持续的未来电网。

The use of fossil fuels and the emission of greenhouse gases (GHG) into the atmosphere must be minimised as fast as possible to reach a climate-neutral society by 2050. A vital prerequisite of the de-carbonisation is the rapid growth of renewables. In 2050 more than 60 % of electrical power is expected to come from wind and solar, both significantly more remote located than traditional thermal power generation. To achieve this, efficient grid-integration of renewables across Europe and globally requires the development of high-power transmission systems and components, and more specifically Medium Voltage DC (MVDC) and High Voltage DC (HVDC) switchgear. In existing grids MVAC and HVAC switchgear isfilled with the insulation gas SF6, the world's most potent GHG with a global warming potential (GWP) of 24 300. SF6-emissions due to leakages during gas handling or defective sealings / compartments represents a significant part of the grid owners' total GHG emissions. MISSION project will develop and demonstrate three SF6-free products as key-levers for climate neutral power transmission based on the requirements defined by TSOs, filling critical gaps in future hybrid ACDC grids: 1. SF6-free HVAC circuit breaker will be developed and type tested by Siemens Energy and installed and demonstrated by Statnett in Norway and RTE in France reaching TRL 8, 2. SF6-free HVDC GIS will be developed and type tested by Siemens Energy in Germany reaching TRL 8, 3. MVDC circuit breaker will be developed and tested in relevant environment by G&W reaching TRL 6. In addition, MISSION will determine technical properties of different SF6-alternatives for application in AC and DC switchgear for high and medium voltage operation. MISSION will contribute to enable emission-free energy transmission and switchgear technology transition for a resilient and sustainable future electric grid.