[目的]当前,多能互补是降低可再生能源弃电现象的重要手段之一。随着电转气(Power to Gas,P2G)技术的进步,电和气的转换也成为保障综合能源系统供应的有效途径。然而,当前P2G环节中电转氢气(Power to Hydrogen,P2H)受成本的制约难以具...[目的]当前,多能互补是降低可再生能源弃电现象的重要手段之一。随着电转气(Power to Gas,P2G)技术的进步,电和气的转换也成为保障综合能源系统供应的有效途径。然而,当前P2G环节中电转氢气(Power to Hydrogen,P2H)受成本的制约难以具备经济性,只有利用弃风、弃光等资源才能实现可持续发展。此外,碳捕集技术也为电转气环节提供了原料供应,从而降低了系统的购气成本。尽管对于P2G的研究很多,但是鲜有研究针对P2G整个过程不同环节的综合效益展开评价。[方法]文章试图构建一个以可再生能源发电为主,燃气发电辅助的微电网系统,针对P2G过程中P2H以及氢气甲烷化两个环节进行精细化测算。[结果]在考虑碳市场、氢市场和甲烷市场的情况下,运用综合评价方法,对比在以电力需求为主的不同场景下P2H以及电转甲烷(Power to Methane,P2M)的经济-环境-能源效益,从而为推广P2G在不同场景下的应用提供合理建议。[结论]结果表明,当可再生能源发电占比很高时,含P2H的微电网系统要比含P2M的微电网系统具有更高的能源和经济价值,尽管在环境效益方面略逊一筹但是差别不大;含P2M的微电网系统在可再生能源发电和燃气轮机发电达到最佳比例时表现最优;当可再生能源发电占比低于65%时,增设P2G的效益不佳。展开更多
“China-Yemen Oil, Gas and Mineral Resources Cooperation Seminar” was held in Beijingfrom May 11 to 13.More than 100 participants from the energy and Minerals departments of the two countries, including senior execut...“China-Yemen Oil, Gas and Mineral Resources Cooperation Seminar” was held in Beijingfrom May 11 to 13.More than 100 participants from the energy and Minerals departments of the two countries, including senior executives from CNPC, Sinopec, CNOOC, Sinochem and China Gold Group, attended the seminar sponsored by China National Committee of World Petroleum Congress and Trade & Economic Committee of China-Arabian Friendship Association. Dr. Wang Tao made an opening speech at the three-day seminar.展开更多
文摘[目的]当前,多能互补是降低可再生能源弃电现象的重要手段之一。随着电转气(Power to Gas,P2G)技术的进步,电和气的转换也成为保障综合能源系统供应的有效途径。然而,当前P2G环节中电转氢气(Power to Hydrogen,P2H)受成本的制约难以具备经济性,只有利用弃风、弃光等资源才能实现可持续发展。此外,碳捕集技术也为电转气环节提供了原料供应,从而降低了系统的购气成本。尽管对于P2G的研究很多,但是鲜有研究针对P2G整个过程不同环节的综合效益展开评价。[方法]文章试图构建一个以可再生能源发电为主,燃气发电辅助的微电网系统,针对P2G过程中P2H以及氢气甲烷化两个环节进行精细化测算。[结果]在考虑碳市场、氢市场和甲烷市场的情况下,运用综合评价方法,对比在以电力需求为主的不同场景下P2H以及电转甲烷(Power to Methane,P2M)的经济-环境-能源效益,从而为推广P2G在不同场景下的应用提供合理建议。[结论]结果表明,当可再生能源发电占比很高时,含P2H的微电网系统要比含P2M的微电网系统具有更高的能源和经济价值,尽管在环境效益方面略逊一筹但是差别不大;含P2M的微电网系统在可再生能源发电和燃气轮机发电达到最佳比例时表现最优;当可再生能源发电占比低于65%时,增设P2G的效益不佳。
文摘“China-Yemen Oil, Gas and Mineral Resources Cooperation Seminar” was held in Beijingfrom May 11 to 13.More than 100 participants from the energy and Minerals departments of the two countries, including senior executives from CNPC, Sinopec, CNOOC, Sinochem and China Gold Group, attended the seminar sponsored by China National Committee of World Petroleum Congress and Trade & Economic Committee of China-Arabian Friendship Association. Dr. Wang Tao made an opening speech at the three-day seminar.
