电网侧储能参与双重辅助服务的日前调度方法及系统
By constructing a dynamic frequency security constraint and energy storage mutual exclusion and coordination model, the problems of grid frequency instability and dispatch compliance under high proportion of new energy access were solved, the synergistic benefits of energy storage resources in peak shaving and frequency regulation were realized, and the system security and economy were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER
- Filing Date
- 2026-01-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing safety-constrained unit combination models fail to explicitly incorporate key safety indicators such as frequency change rate, minimum frequency point, and quasi-steady-state frequency deviation when a high proportion of renewable energy is integrated. This leads to the risk of frequency instability in dispatch plans. Furthermore, the disconnect between peak shaving and frequency regulation needs makes it difficult to adapt to specific market exclusion rules, resulting in compliance challenges.
A basic power system model is constructed, introducing multi-stage dynamic frequency security constraints, including inertial response, primary frequency regulation, and secondary frequency regulation. A mutually exclusive and cooperative model of energy storage participating in dual ancillary services and an energy sustainability constraint model are established. A multi-objective security constraint unit combination model is constructed, and the energy storage scheduling method is optimized to meet frequency security and market rules.
It effectively solves the risk of system frequency instability and multi-service scheduling conflicts under high proportion of new energy access, significantly improves the system's security and economy, fully taps the synergistic benefits of energy storage resources in peak shaving and frequency regulation, improves the utilization rate of new energy, keeps frequency safety indicators within a safe range, and energy storage contributes significant AGC backup capacity.
Smart Images
Figure CN121965801B_ABST