Cogeneration unit coupling molten salt energy storage and heat supply flexibility improvement effect calculation method and device

By introducing a molten salt energy storage system into the cogeneration unit, the heat storage capacity and maximum heating flow are calculated, and the thermal load operation range is adjusted, the problem of the thermal load operation range of the cogeneration unit being affected by the thermal load during peak shaving process is solved, and the flexibility of the cogeneration unit is improved.

CN119646351APending Publication Date: 2025-03-18HUANENG PINGLIANG POWER GENERATION CO LTD +2
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Patent Information

Application Number
CN202411799708.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

Due to the thermoelectric coupling characteristics during peak regulating process, the electric load operation interval is affected by the thermal load, and the flexibility is insufficient, making it difficult to effectively regulate.

Method used

By introducing a molten salt energy storage system into the cogeneration unit, the heat storage capacity and maximum heating flow of the molten salt are calculated, and the thermoelectric load operation interval is adjusted, thereby improving the unit's thermoelectric load operation flexibility.

Benefits of technology

The flexibility of the electric load operation range of the cogeneration unit is achieved, the maximum electric load is increased and the minimum electric load is reduced, and the operation control capability is improved during peak shaving.

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Abstract

The invention discloses a combined heat and power generation unit coupling molten salt energy storage heat supply flexibility improvement effect calculation method and device. The method comprises the steps that 1, an electric load operation interval is determined according to the thermoelectric coupling characteristic of a combined heat and power generation unit; 2, the heat storage amount in the heat storage process is calculated; 3, the maximum heat supply flow of the molten salt energy storage system is determined; 4, calculating an electric load operation interval in the peak regulation process of the cogeneration unit; therefore, the combined heat and power generation unit coupling molten salt energy storage and heat supply flexibility improvement effect can be evaluated. The invention further provides a device for implementing the calculation method. By means of the calculation method and device, operators can conveniently master the output electric load boundary of the unit when the unit participates in peak regulation, and regulation and control are better facilitated.
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