摘要
针对一种含光伏、蓄电池和冷热电联供的微网,在满足用户多种能源需求和联网运行的条件下,对系统中的微型燃气轮机、余热锅炉和制冷机等主要供能设备采用基于部分负荷(part load ratio,PLR)特性的模型,建立了以总运行成本最低为目标的微网日前动态经济调度的0-1混合整数非线性规划模型。通过求解某个楼宇CCHP型微网夏季典型日的算例,从优化调度方案、总运行费用等方面,比较了系统设备采用部分负荷特性模型和固定效率模型时的调度优化差异。结果表明,两种模型对于调度结果的误差不可忽略,部分负荷特性模型的结果更为准确;值得注意的是冷负荷所造成的模型误差比较显著。
For a combined cooling heating and power（ CCHP） microgrid including photovoltaic,storage battery and CCHP,and under the conditions of fulfilling the multiple energy demand for subscribers and interacting with the distribution system,and based on part load ratio models of the principal components in the microgrid including the micro turbine,heat recovery steam generator（ HRSG） and refrigerating machines as well as the combined cooling heating and power（ CCHP）,a 0- 1 mixed integer nonlinear programming（ M INLP） model for day-ahead CCHP microgrid dynamic economic dispatch is established with the target of minimizing the total operating energy cost. Furthermore,the differences between the part load ratio based model and the constant efficiency model of the components are compared in dispatch scheme optimizing and total operating cost via solution of a residence building CCHP-type microgrid during a typical summer day. It turns out that the error between these two models cannot be ignored in dispatch scheme optimizing,and the result of part load ratio model is more precise. What＇s more,the model error from the cooling load is more considerable.
出处
《南方电网技术》
北大核心
2016年第8期32-39,共8页
Southern Power System Technology
基金
国家自然科学基金资助项目(51377058)~~
关键词
部分负荷模型
微网经济调度
冷热电联供
混合整数非线性规划
固定效率模型
模型误差
part load ratio（PLR） model
economic dispatch for microgrid
combined cooling heating and power（CCHP）
mixed integer nonlinear programming（M INLP）
constant efficiency（CE） model
model error
