On An Equivalent Representation of the Dynamics in District Heating Networks for Combined Electricity-Heat Operation
On An Equivalent Representation of the Dynamics in District Heating Networks for Combined Electricity-Heat Operation
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DOI：
10.1109/tpwrs.2019.2935748
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发表时间：
2020-01
影响因子：
6.6
通讯作者：
Jingwei Yang;Ning Zhang;A. Botterud;C. Kang
中科院分区：
文献类型：
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作者：
Jingwei Yang;Ning Zhang;A. Botterud;C. Kang
改善电力和区域供热系统 (DHS) 之间的协调可以在容纳更多风电方面发挥至关重要的作用。然而，区域供热网络（DHN）的动态尚未得到充分描述，以实现大的传输延迟，这仍然是实现最佳电热协调的障碍。本文通过从电模拟角度对热损失和传输延迟进行建模，提出拉普拉斯域中的统一框架来解决这个问题。基于该框架，提出了DHN的等效表示，显示了热力发电和需求之间明确的“端到端”关系。该模型应用于电力和热力联合运行，其中黑匣子模型由DHS运营商向电力系统运营商提供，而不透露详细的网络信息。集成电热系统的案例研究证明了所提出模型的有效性和简单性。
Improved coordination between power and district heating systems (DHSs) can play a vital role in accommodating more wind power. However, the dynamics of district heating networks (DHNs) have not yet been fully described for large transfer delays, which remains an obstacle for optimal electricity-heat coordination. This paper solves this problem by proposing a uniform framework in the Laplace domain by modeling heat losses and transfer delays from an electrical-analog perspective. Based on this framework, an equivalent representation of DHNs is proposed, showing the explicit “end-to-end” relationship between heat power generation and demand. The model is applied in combined electricity and heat operation, in which the black-box model is provided by DHS operators for power system operators without revealing the detailed network information. A case study of an integrated electricity-heat system demonstrates the effectiveness and simplicity of the proposed model.