考虑启动热量约束的光热机组优化运行模型

光热发电系统能够有效应对光照资源的随机性与间歇性，为大规模可再生能源开发提供了新途径。针对已有模型未计及机组启动约束，导致运行计划不可行的问题，文中详细分析了光热机组启动中的热量累积过程，建立了考虑启动热量约束的运行模型，更精细地刻画了机组运行特性，并基于上述模型开展了光热机组运行优化研究。以改编的IEEE-RTS79为例进行了算例分析，结果表明所提出的模型正确有效，能避免机组启动方案不可行的问题。同时，通过灵敏度分析进一步说明了光热发电作为一种可再生能源降低系统生产成本、促进风电等其他形式可再生能源电力消纳的效益和影响因素。

Optimal Operation Model of Concentrating Solar Power Units Considering Startup Heat Constraints

Concentrating solar power(CSP)generation system can well cope with the randomness and intermittence of solar power, which provides a new approach to exploit large-scale renewable energy. There are no unit startup constraints in the existing model, which may lead to infeasible operation schedule. For this problem, this paper analyzes the heat accumulation process during startup of CSP units and develops a CSP operation model considering startup heat constraints. It can describe the operation characteristics of CSP units more precisely. The optimal operation of CSP units is also studied based on the above model. Example analysis is conducted on the modified IEEE-RTS79 system. The results show that the proposed model is correct and effective, and can avoid the occurrence of unfeasible startup schemes. Also, further sensitivity analysis reveals the benefits of CSP units in reducing production costs and promoting accommodation of other renewable energy and its influencing factors.