太空发电站地面接收站附近电磁环境评估

Electromagnetic Environment Assessment Near Space Power Station Ground Receiving Station

随着全世界范围对能源的需求量与日俱增,空间太阳能发电概念为人类全面开发利用空间太阳能提供了可能;其中,微波电能传输是实现空间太阳能发电的一种极具潜力的技术方案,受到前所未有的重视。与传统能源(煤炭/石油/核能)类似,空间太阳能发电必然影响地球环境,尤其是微波电能传输使用高功率的微波长时间、固定位置穿透大气层并长期照射地面接收站,必须研究和分析空间太阳能发电对环境的影响。因此,通过对太空发电站系统相关参数的分析,利用基于等效原理的口径场法推导出地面接收站系统附近场强的计算公式,进一步通过对发射天线照射区域进行划分的方法分别仿真地面接收天线中心位置和边缘位置处的场强。最后根据我国政府制定的电磁辐射曝露限值管理标准提出公众、工医科设备及通信系统不受地面接收站电场强度影响的安全区域范围。

With the increasing demand for energy all over the world,the concept of space solar power generation provides the possibility for human beings to develop and utilize space solar energy in an all-round way.Among them,microwave power transmission is a potential technical scheme to realize space solar power generation,which has not been paid much attention before.Similar to traditional energy sources(coal/oil/nuclear energy),space solar power generation will inevitably affect the earth's environment,especially when microwave power transmission uses highSpace power station;far field strength;simulation analysis;safe areapower microwave for a long time and a fixed position to penetrate the atmosphere and irradiate the ground receiving station for a long time.It is necessary to study and analyze the impact of space solar power generation on the environment.Therefore,through the analysis of the relevant parameters of the space power station system,the calculation formula of the field strength near the ground receiving station system is derived by using the aperture field method based on the equivalent principle,and the field strength at the center and the edge of the ground receiving antenna is simulated by dividing the radiation area of the transmitting antenna.Finally,according to the management standard of electromagnetic radiation exposure limit formulated by our government,the safe area of the public,medical equipment and communication system not affected by the electric field strength of the ground receiving station is proposed.