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针对大电网已进入“强直弱交”互联电网的过渡期，仿真分析特高压外送电源通道故障后大电网的发展态势，提出支撑特高压互联电网安全运行的负荷友好互动的总体思路。即ms级紧急控制模式、秒级次紧急控制模式、分钟级常规控制模式，并简述供需友好互动的关键技术，提出负荷友好互动的具体实现，即系统架构、商业模式和实现流程。最后，介绍江苏电力在负荷参与电网友好互动方面的工程实践和商业模式探索，上述实践及探索对未来特高压互联下的全球能源互联网起到了重要的支撑作用。“,”Considering the fact that large power grid has been developed into an interconnected power grid system with strong DC and weak AC, this paper simulated its development trend after a failure of the UHV transmission channel occurred, and, put forward the load the general idea of friendly interaction to support UHV interconnected power grid’s safe operation. A series of control modes were analyzed such as the millisecond load fast cutting, second-level load group control, and minute-level conventional load, In additon, this paper expounded the key technology of load friendly interaction, and put forward the forms of realization, i.e. the system architecture, business model and the implementation process. Finally, this paper introduced the engineering practice and business model implemented by Jiangsu electric power company for exploring the effects of load in power grid’s friendly interaction, which plays an important supportive role in the future UHV interconnected global energy interconnection.