Transmission-Constrained Unit Commitment Considering Combined Electricity and District Heating Networks
Transmission-Constrained Unit Commitment Considering Combined Electricity and District Heating Networks
复制标题
考虑电力和区域供热网络联合的传输受限机组承诺
DOI：
10.1109/tste.2015.2500571
复制
发表时间：
2016-04-01
影响因子：
8.8
通讯作者：
Zheng, Taiyi
中科院分区：
文献类型：
--
作者：
Li, Zhigang;Wu, Wenchuan;Zheng, Taiyi
由于冬季发电和供热的强联动性，热电联产机组的不灵活运行可能会限制风电并网发电。利用现有区域供热网络的储热能力是提高电力系统运行灵活性以适应大量风电变化的一种经济有效的措施。为了协调电力和集中供热系统的短期运行，采用线性DHN模型，建立了热电联供输电约束机组组合模型(UC-CEHN)。通过捕捉管道温度的准动态特性，对DHN的储热能力进行了建模。确定性模型和稳健模型都是为了将UC与线性DHN模型结合起来而开发的。对两个测试系统进行了案例研究，展示了该方法在风电并网和高效运行方面的潜在好处。
Wind power integration could be restricted by inflexible operation of combined heat and power (CHP) units due to the strong linkage between power generation and heating supply in winter. Utilization of the heat storage capacity of existing district heating network (DHN) is a cost-effective measure to enhance power system operational flexibility to accommodate large amounts of variable wind power. In this paper, transmission-constrained unit commitment (UC) with combined electricity and district heating networks (UC-CEHN) is formulated with a linear DHN model to coordinate short-term operation of electric power and district heating systems. The heat storage capacity of the DHN is modeled by capturing the quasi-dynamics of pipeline temperature. Both deterministic and robust models are developed to incorporate UC with the linear DHN model. Case studies are carried out for two test systems to show the potential benefits of the proposed method in terms of wind power integration and efficient operation.