Impact of Natural Gas System on Risk-Constrained Midterm Hydrothermal Scheduling
IEEE Transactions on Power Systems（2013）
摘要
This paper studies the impact of natural gas (NG) contracts and constraints on a GENCO's midterm risk-constrained hydrothermal scheduling problem. The NG contracts and constraints are modeled as a set of linear equations. The proposed model utilizes the stochastic price-based unit commitment (PBUC). The PBUC hourly solution considers uncertainties of market prices for energy and ancillary services, uncertainties of natural water inflows, and random NG infrastructure interruptions in Monte Carlo scenarios. Illustrative examples analyze the GENCO's risk levels when considering midterm schedules for generating units, target payoffs, and usages of water inflow, NG and other thermal resources. Simulation results show that a GENCO's midterm schedules and financial risks could be impacted significantly with the consideration of NG contracts and constraints.
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关键词
target payoffs,contracts,natural water inflows,ancillary services,stochastic processes,stochastic price-based unit commitment,natural gas technology,thermal resources,linear equations,midterm risk-constrained hydrothermal scheduling problem,natural gas system,interdependency of natural gas and electricity,hydrothermal power systems,monte carlo methods,monte carlo scenarios,power generation dispatch,genco,pbuc hourly solution,financial and physical risks,generation companies,ng contracts,risk analysis,random ng infrastructure interruptions,ng constraints,energy services,market prices,risk management,genco midterm risk-constrained hydrothermal scheduling problem,natural gas contracts,power markets,power generation scheduling,water resources,power systems,uncertainty,schedules,mathematical model,natural gas
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