Optimal economic dispatch for integrated power and heating systems considering transmission losses

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Abstract

To address the problem of the supply-demand imbalance caused by network transmission losses in integrated power and heating systems (IPHS), this paper presents an optimal economic dispatch strategy to minimize system operation cost and realize coordination and optimization between power and heat. Firstly, an innovative economic dispatch model considering transmission losses is developed, where both power and heat transmission losses models are established with good precision together. In addition, the coordination equation is derived from the formulated nonlinear, multi-constrained coupling optimization problem, where the coordination relationship of units' outputs is clearly analyzed in an analytic way. Then, a double-λ-iteration algorithm is proposed, which can not only effectively solve the nonlinear coupling optimization problem but also decrease computation burden with faster convergence rate. Finally, simulations performed on five case studies illustrate the satisfying performance of the presented strategy.

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APA

Huang, B., Zheng, C., Sun, Q., & Hu, R. (2019). Optimal economic dispatch for integrated power and heating systems considering transmission losses. Energies, 12(13). https://doi.org/10.3390/en12132502

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