LI Chenyang,ZHANG Shenxi,CHENG Haozhong,et al.Correlation-based Probabilistic Multi-energy Flow Calculation of Regional Integrated Energy System with Combined Electricity and Natural Gas[J].Automation of Electric Power Systems,2020,44(21):42-49.
LI Chenyang,ZHANG Shenxi,CHENG Haozhong,et al.Correlation-based Probabilistic Multi-energy Flow Calculation of Regional Integrated Energy System with Combined Electricity and Natural Gas[J].Automation of Electric Power Systems,2020,44(21):42-49. DOI: 10.7500/AEPS20191121006.
Correlation-based Probabilistic Multi-energy Flow Calculation of Regional Integrated Energy System with Combined Electricity and Natural Gas
The large-scale integration of renewable energy resources increases the uncertainty in regional integrated energy systems (RIES) with combined electricity and natural gas. With the increase of coupling degree between power systems and natural gas systems
the impact of load fluctuation of the coupling part on the energy flow of RIES becomes more and more significant. First
a steady state multi-energy flow model is established based on the energy hub model. On this basis
considering the volatility of power load
natural gas load
coupling part load, and output of renewable energy sources and correlation between power load and natural gas load
a computation method of the state variables in RIES is proposed. Second, Cornish-Fisher expansion is used to fit the probability distribution of the state variables. Case studies are implemented in the combined modified IEEE 33-bus and natural-gas 11-bus system
and the proposed method is proven to be fast
effective and accurate. At the same time, the impact of different coupling part load fluctuation degrees and correlation levels between power load and natural gas load on multi-energy flow of RIES is analyzed.
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references
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