Load Demand Response Value Evaluation and Analysis Based on Source-load Similarity

Under the background of a high proportion of renewable energy being connected to power grid, the uncertainty of the power generation side and the demand side has increased, and it is difficult to support the regulation demand of power grid by relying on the power generation side alone to respond to load changes. Demand response (DR) is an effective means to improve the flexibility of power grid by taking advantage of the adjustability of the load side. In order to quantitatively evaluate the effect and value of DR of load, a median dynamic time warping (M-DTW) index which is used to describe the similarity between the load and renewable energy generation curve is proposed. It is verified by comparative analysis that more renewable energy generation can be absorbed with load regulation based on the proposed index. After that, the M-DTW index is used to describe the static and dynamic DR value of the user load curve, and the agglomeration effect and value of the load cluster in DR are simulated and analyzed. It is shown that the M-DTW index can provide a quantitative method and theoretical support for guiding and evaluating the contribution of DR.