Research on Simulation Model and Algorithm of Subregional Power Grid after Large Power Shortage
Safety control of large power shortages in zoning power grids to prevent power grids from collapsing.
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Applicable industry
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Key innovations
Innovatively established a high-precision simulation model and algorithm for large power shortages in regional power grids, and proposed optimal control strategies to significantly improve the safety and stability of power grid operation and avoid large-scale power outages.
Potential economic benefits
This technology can effectively prevent large-scale power outages, significantly reduce huge economic losses, ensure the continuity of industrial and commercial production, improve social operating efficiency, and promote stable development of the regional economy.
Potential climate benefits
Improve the stability of the power grid, reduce operational risks, create conditions for large-scale renewable energy grid integration, promote clean energy substitution, and indirectly reduce carbon emissions.
Solution supplier
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East China Power Grid Co., Ltd
East China Power Grid Co., Ltd.: Ensure safe and stable power supply in East China and support regional economic and social development.
Shanghai，China
Solution details
- Science and technology fields
This project belongs to the technical field of power system safety and stability analysis and control. It can significantly improve the safety and stability of the operation of the East China Sub-Power Grid and avoid large-scale power outages caused by the collapse of the Sub-Power Grid. - Main content and characteristics
In order to suppress short-circuit current, the load center of East China Power Grid generally adopts a hierarchical zoning strategy. When external power supply is lost, a large power shortage will appear in the zoning power grid, resulting in a significant decrease in frequency and voltage, and face the risk of total collapse. This project establishes a simulation model for electrical components after a large power shortage in the zoning power grid, analyzes the impact of the corresponding mathematical model on the simulation accuracy, and proposes a simulation algorithm that meets the actual requirements of the project; based on the actual situation of Shanghai Power Grid, it proposes a safety control strategy after a large power shortage in the zoning power grid. The main contents and characteristics are as follows:
- Study the impact of large-scale frequency and voltage offsets on the power system and load characteristics of power plants, and establish a simulation model suitable for large power shortages in zoning power grids;
- Study the simulation algorithm for the zoning power grid after a large power shortage that meets the actual requirements of the project, and conduct secondary development of FASTEST software to make it able to compare the impact of correcting network parameters and not correcting network parameters on the security and stability of the power grid;
- Based on the established simulation model and algorithm, analyze the frequency and voltage security of the Shanghai Sub-Power Grid after a large power shortage, and evaluate the rationality and adaptability of the existing low-frequency and low-voltage load shedding configuration scheme of the Shanghai Power Grid;
- Research and propose an optimal configuration scheme for low-frequency load shedding after a large power shortage and a configuration scheme for the combined load switching device of the Shanghai Sub-district Power Grid.
- Promotion situation
The research results of this project have important guiding significance for the configuration of low-frequency load shedding plans for Shanghai Sub-Power Grid, preventing voltage and frequency collapse accidents after large power shortages in the sub-Power Grid, improving the safe and stable operation level of Shanghai Sub-Power Grid, and also providing guidance for East China and other provinces and cities. It provides reference and reference for the stability characteristics research of sub-power grids after large power shortages and the configuration of low-frequency load shedding devices.
Last updated
11:31:45, Nov 04, 2025
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