A Practical Load-Source Coordinative Method for Further Reducing Curtailed Wind Power in China with Energy-Intensive Loads

Abstract

Large-scale wind power farms in China are suffering from large amounts of curtailed wind power in the conventional dispatching mode. Energy-intensive loads have great potential in providing service regulation to help consume the curtailed wind power. However, constrained by technical limitations, the regulating power of energy-intensive loads cannot fully follow the fluctuating wind power. This would result in insufficient utilization of the regulation capability of energy-intensive loads, which limits the promotion in consumption of curtailed wind power brought by load-source coordination. With this concern, a brand new method for further consuming the curtailed wind power, which involves using coal-fueled units to provide ancillary regulation for the coordination of energy-intensive loads and wind power is presented, and a corresponding bi-level coordinative model is also established. The first level of optimization is intended to maximize the consumption of curtailed wind power with minimum ancillary regulation energy. The second level of optimization is to allocate the ancillary regulating power with minimum regulation cost. Wind power consumption was increased by 3,369.25 MWh and utilization rate of energy-intensive loads was promoted to 100% in the case analysis, which verifies the effectiveness of the proposed method.

Bio-Inspired Optimal Dispatching of Wind Power Consumption Considering Multi-Time Scale Demand Response and High-Energy Load Participation

“…In July 2020, China's Northwest Power Grid has 14 high-capacity enterprises participating in market regulation, reaching a total peak capacity of 532,000 kW. Therefore, the use of high energy load in the northwest region to attack wind curtailment has certain practical significance [10][11][12]. Li et al [13] proposed a 'source-load' coordinated scheduling model for high energy load and conventional power supply, which offers a novel approach to solving the issues of wind abandonment.…”

An Optimal Day-Ahead Thermal Generation Scheduling Method to Enhance Total Transfer Capability for the Sending-Side System with Large-Scale Wind Power Integration

“…Many relevant studies focus on expanding consumption space for wind power in the local areas of large-scale wind power bases. A pair of studies [1,2] suggest that the curtailed wind power could be consumed by the energy-intensive load, which is located close to the large-scale wind power base and has better regulation flexibility than residential load. Two papers [3,4] studied the potential of deep peak regulation of thermal generation units and proposed a wind-thermal peak regulation trading mechanism to help consume wind power.…”