基于系统动力学模型的徐州市水资源承载力研究

本文运用系统动力学原理,构建了徐州市水资源承载力系统SD模型。并利用该模型,研究徐州市水资源承载力在不同发展方案下的变化趋势。最终得出开源、节流、治污并举的综合方案是徐州市水资源可持续发展利用的最优方案,同时指出开源措施对徐州市水资源承载力提高效果最为明显。并有针对性的提出提高徐州水资源承载力的建议与措施。     

Simulation planning of power supply capacity: an approach to optimal industrial microgrid operation with carbon emission permits

ABSTRACT

Microgrids integrated with distributed generation provide energy intensive enterprises (EIEs) with a solution to cut down their total system costs. However, unreasonable capacity allocation of power supply in industrial microgrid may result in capacity shortage or excess, thus leading to uneconomical solutions. Considering carbon emission permits and renewable energy access on demand side, this paper analyses and evaluates the long-term impacts of power supply capacity on economic benefits and carbon emission. The power suppliers consist of industrial self-generation, wind power generation and power grid. A HOMER software based industrial microgrid model is designed, and time series simulation of the model for a cycle of 10 years is performed to provide numerical analysis. The simulation results with sensitivity analysis show that optimal capacity planning of power supply can lead to considerable economical and ecological benefits under carbon emission permits; besides, it can also be conducive to peak load shedding for power grid.     

氮肥企业重大危险源安全监控系统设计

安全监控系统是重大危险源企业预防和控制生产事故的重要技术措施.以氮肥厂为案例,分析了其运营过程中存在的主要危险因素和建立重大危险源安全监控系统的技术需求,在此基础上设计了重大危险源安全监控系统,建立了基于空间信息技术的重大危险源多模式安全监控平台.该平台可以通过网络联入城市或国家重大危险源安全监控系统,有利于政府和行业部门对重大危险源的监管.借助于这样的数字化动态管理系统,可以及时获得相关参数与信息,实现早期预警,降低重大危险源企业的事故风险.