Hybrid Timescale Dispatch Hierarchy for Combined Heat and Power System Considering the Thermal Inertia of Heat Sector
Hybrid Timescale Dispatch Hierarchy for Combined Heat and Power System Considering the Thermal Inertia of Heat Sector
复制标题
考虑热部门热惯性的热电联产系统混合时间尺度调度层次
DOI：
10.1109/access.2018.2876718
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发表时间：
2018
期刊：
影响因子：
3.9
通讯作者：
Guangsheng Pan
中科院分区：
文献类型：
--
作者：
Shuai Yao;Wei Gu;Suyang Zhou;Shuai Lu;Chenyu Wu;Guangsheng Pan
为了更好地适应可再生能源和负荷引入的不确定性，本文构建了热电联产系统的混合时标调度层次结构，该层次结构协调日前调度、日内滚动调度、实时调度和自动发电控制等阶段，逐步分解不确定性。考虑到热电行业的不同特点，在各调度阶段，供热机组和发电机组应有不同的调度间隔。为此，提出了一种综合考虑频繁调节的额外运行维护费用、区域供热网运行方式和建筑物蓄热能力的确定各机组最优调度间隔的方法。在调度模型中还考虑了热力部门的热惯性，以提高风电的消纳效率。该模型将室内温度与供水温度直接联系起来，可以方便地用于确定DHN的状态。算例结果验证了该调度方法的可行性和有效性，提高了风电场的经济性和消纳能力。
To better accommodate the uncertainty introduced by renewables and loads, a hybrid timescale dispatch hierarchy for the combined heat and power system is constructed in this paper, which coordinates the stages of day-ahead dispatch, intraday rolling dispatch, real-time dispatch, and automatic generation control to decompose the uncertainty step by step. Considering the different features of heat and power sector, heating units should have different dispatch intervals from power units in each dispatch stage. Therefore, a method considering the extra operation and maintenance costs of frequent adjustment, the operation modes of district heating network (DHN), and the heat storage capacity of buildings is developed to determine the optimal dispatch interval of each unit. The thermal inertia of heat sector is also integrated into the dispatch model to improve wind power consumption. The model of buildings directly links the indoor temperature with the temperature of supplied water and can be easily applied to determine the state of DHN. Results of the case study validate the feasibility and effectiveness of the proposed dispatch method in terms of enhancing the economical efficiency and wind power consumption.
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