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Observability Analysis of Integrated Electricity and Heating Systems with Thermal Quasi-dynamics in Pipelines

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posted on 25.04.2022, 19:04 by Zhigang LiZhigang Li, Wenjian Zheng, Jiehui Zheng, Junbo Zhao, Q. H. Wu

Observability analysis (OA) is vital to obtaining the available input measurements of state estimation (SE) in an integrated electricity and heating system (IEHS). Considering the thermal quasi-dynamics in pipelines, the measurement equations in heating systems are dependent on the estimated results, leading to an interdependency between OA and SE. The conventional OA methods require that the measurement equations be known exactly before SE is performed, and they are not applicable to IEHSs. To bridge this gap, a scenario-based OA scheme for IEHSs is devised that yields reliable analysis results for a predefined set of time-delay scenarios to cope with this interdependency. As its core procedure, the observable state identification and observability restoration are formulated in terms of integer linear programming. Numerical tests are carried out to demonstrate the validity and superiority of the proposed formulation.

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Email Address of Submitting Author

lizg16@scut.edu.cn

ORCID of Submitting Author

0000-0003-0464-8800

Submitting Author's Institution

South China University of Technology

Submitting Author's Country

China