Configuration of electric boilers to cut heat load peak and fill power load valley is one of the main ways to reduce wind power abandoning in Northeast, North, and Northwest China. This paper compares and analyses the effect of centralized source-side and distributed load-side electric boilers on wind power curtailment. Firstly, from three aspects of the influence of heat network loss on heat power of heat source, and the influence of heat network delay on heat power of thermoelectric unit, on heat power and on effect of filling power load valley of electric boilers, the similarities and differences of wind power curtailment effect between two different electric boiler configurations are analyzed on mechanism. Then, the dispatching models of the combined heat and power system of two different electric boiler configurations are constructed respectively. Results of case simulation show that the configuration of distributed load-side electric boilers has lower total heat loss, lower heat power and power determined by heat of thermoelectric units, better effect of filling power load valley by electric boilers, and better effect of wind power curtailment. This work is supported by National Natural Science Foundation of China (No. 51877049) and Science and Technology Project of State Grid Corporation of China (No. 5442dz180019) “Research and Application of Global Plan Decision-making and Spot Market Core Techniques”.