Optimal coordination between system reserve and interruptible loads with response uncertainty

The response uncertainty of interruptible load is caused by different factors, such as user consumption behaviour, objective conditions, etc., and its degree is directly related to the incentive extent, which will eventually affect the reliability index of overall system power-supply. An interruptible load model with response uncertainty is built and the optimization model of coordination between interruptible load and reserve is adopted to determine the configuration relationship between the optimal system reserve capacity and the interruptible load with response uncertainty under different reliability indexes. The results of case study for IEEE-RBT 6-bus system show that, the significant crowding effect of massive users may compensate the response uncertainty of single user; the different configuration characteristics of generator reserve and interruptible load in the optimization model under different reliability indexes make the resource configuration more reasonably optimized, reflecting the coordination in economy and reliability. © 2015, Electric Power Automation Equipment Press. All right reserved.