Flexible loads are one of the most important resources for balancing the new energy fluctuation. In consideration of the increasing uncertainty in power grid operation caused by the randomness

autonomy and disorder of flexible loads response

an assessment framework is proposed to tackle the effect and impact of flexible load interaction; a price-based and an incentive-based interactive response model is developed

respectively; an index assessment system involving the interaction degree

interaction effect and security impact of power grid is built; and a quantitative assessment method considering the interaction process is designed. The effectiveness of the proposed model

the indicators and assessment method are verified by the simulation results on an IEEE 39-bus system. This work is supported by National Basic Research Program of China (973 Program) (No.2013CB228206)

National Natural Science Foundation of China (No.51407165)

Beijing Natural Science Foundation (No.3132035) and State Grid Corporation of China (No. DZ71-13-036

No. DZ71-13-045).