作为一种典型的化工园区,煤制氢合成氨园区由于依赖煤等化石燃料所以碳排放巨大,绿色低碳转型困难.电解水制氢作为一种清洁无污染的氢气生产方式近年来发展迅速,为合成氨园区低碳运行提供了新思路.本文提出一种合成氨园区能源局域网低碳运行架构,在煤制氢合成氨园区中煤制氢、氢制氨等已有装置与原有电力系统、供热系统的基础上,新增屋顶光伏、电储能与氢能系统,构建煤-电-氢-热耦合的合成氨园区能源局域网,实现合成氨园区多能互补与低碳运行.另外,建立包含氢源、氢负荷、储能、热源等环节及耦合设备的数学模型,构建并求解了以最小化园区运行成本与碳排放为目标且满足园区运行约束的合成氨园区能源局域网经济调度模型,通过算例分析验证了所提方法在减少园区运行成本及碳排放方面的有效性.

As a typical chemical industrial park, the coal to hydrogen ammonia synthesis park relies on fossil fuels such as coal, resulting in huge carbon emissions and difficulties in green and low-carbon transformation. As a clean and nonpolluting hydrogen production method, hydrogen production by water electrolysis has been developing quickly in recent years,which provides a probability for low-carbon operation of hydrogen to ammonia chemical industry parks. In this paper, a low-carbon operation framework of the energy distribution network in the synthetic ammonia park is proposed. Taking the traditional coal to hydrogen ammonia synthesis park as an example, the roof photovoltaic, electric energy storage, and hydrogen system are introduced to construct the coal-electricity-hydrogen-heat coupling energy distribution network in the chemical industry park based on coal to hydrogen and hydrogen to ammonia equipment, the original power system, and heating system, so as to realize the multi-energy complementary operation and reduce the carbon emission. Then, a model including hydrogen source, hydrogen load, energy storage system, and heat source is established. The economic dispatch model of the energy distribution network in the chemical industrial park is developed and solved to minimize the operation cost and carbon emission of the park and meet the operational constraints of the park. Finally, the case study shows that the proposed method can effectively reduce the operation cost and carbon emission of the park.