计及需求响应的含风电场电力系统发电与碳排放权联合优化调度

提出了一种节能减排形势下的优化调度模型和解法。研究对象上,文中研究了风电、火电、需求响应3种发电(虚拟发电)形式,需求响应可为系统提供零碳发电资源和旋转备用。模型建立上,基于多目标安全约束机组组合模型,采用发电和碳排放联合调度的方式,寻求经济目标与排放目标的折中协调解;约束条件综合考虑了需求响应、安全约束和碳排放等多种约束。解法上,采用分段线性化的方式,利用混合整数线性规划进行求解,解法适用于大规模系统,使模型更具实用价值。算例分析表明,决策结果能够兼顾排放与成本,并且在调度中引入需求响应可提高系统的风电消纳能力,具有显著的节能减排效益。

Optimal Dispatch Coordinating Power Generation With Carbon Emission Permit for Wind Farms Integrated Power Grid Considering Demand Response

To meet the requirement of energy conservation and emission reduction,a novel optimal dispatching model is proposed and the approach to solve the proposed model is given.Three power generation modes,i.e.,thermal power generation,wind power generation and demand response(DR) that is regarded as virtual power generation are taken as research objects.Both wind farms and DR are non-emission resources,besides DR can provide spinning reserve and improve the utilization of wind power to reduce carbon emission evidently.The proposed model is based on multi-object unit commitment model in which the dispatching mode that coordinates power generation with carbon emission permit is adopted to seek a compromise-coordination solution;various constraints in the proposed model such as DR,security constraints and carbon emission are synthetically considered.Using piece-wise linearization,the proposed model is solved by mixed integer linear programming(MILP).The solution approach being used is practicable and suitable to large-scale power grid.Simulation results of IEEE 30-bus system show that both carbon emission permit and generation cost can be taken into account;simulation results of IEEE 118-bus system show that with the increase of rated output of wind farm both carbon emission cost and unit operation cost are reduced,and obvious economic effect,energy conservation and carbon emission reduction can be achieved while the proposed dispatching mode coordinating power generation with DR is applied.