偏差电量考核机制下售电公司CCHP系统运行优化模型

针对我国电力现货市场形成前的过渡阶段售电公司偏差电量考核风险问题,提出利用冷热电联供(combined cooling,heating and pow er,CCHP)系统的可控出力特性,将其作为降低偏差电量的有效手段。同时,在日结算周期的偏差电量考核机制下,提出了计及偏差电量考核成本的售电公司CCHP滚动优化模型,解决了降低偏差电量的可操作性问题。以某售电公司代理用户负荷数据为例的仿真算例表明,不管在正偏差还是负偏差情况下,通过滚动优化调节CCHP的出力,可在降低偏差电量考核成本的同时,提高售电公司的整体盈利。

Optimal Model for CCHP of Power Retailer Considering the Daily Deviation Penalty

The power retailers face the risk of electricity deviation penalty in the transitional period before the formation of the spot market of electric power in China. In this paper, the CCHP system is provided as an effective means to reduce the deviation power because of its controllable output. At the same time, the rolling optimal model of the CCHP considering the cost of deviation power penalty is proposed under the daily deviation penalty mechanism, which solves the operability problem of reducing the deviation power. The simulation is performed on the basis of the load of a power retailer. The simulation results show that, no matter in the case of positive deviation or negative deviation, by rolling optimization of the operation mode of CCHP, the cost of deviation penalty can be reduced and the overall revenue of the power retailer can be improved.