Cascade mitigation in energy hub networks.
CDC-ECE(2011)
摘要
The paper establishes a formulation for energy hub networks that is consistent with mixed-integer quadratic programming problems. Line outages and cascading failures can be considered within this framework. Power flows across transmission lines and pipelines are compared with flow bounds, and tripped when violations occur. The outaging of lines is achieved using a mixed-integer disjunctive model. A model predictive control (MPC) strategy is developed to mitigate cascading failures, and prevent propagation of outages from one energy-carrier network to another. The MPC strategy seeks to alleviate overloads by adjusting generation and storage schedules, subject to ramp-rate limits and governor action. If overloads cannot be eliminated by rescheduling alone, MPC determines the minimum amount of load that must be shed to restore system integrity. The MPC strategy is illustrated using a small 12 hub network and a much larger network that includes 132 energy hubs.
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关键词
integer programming,load flow control,pipelines,power generation scheduling,power system reliability,power transmission lines,predictive control,quadratic programming,MPC strategy,cascade mitigation,cascading failures,energy hub networks,energy-carrier network,flow bounds,generation schedules,governor action,line outages,minimum amount,mixed-integer disjunctive model,mixed-integer quadratic programming problems,model predictive control strategy,outage propagation prevention,pipelines,power flows,ramp-rate limits,storage schedules,system integrity,transmission lines
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