An AC line overload regulation method and device based on a multi-terminal DC converter, a terminal device, and a computer readable storage medium
By constructing an AC line overload control method for multi-terminal DC converters, obtaining system parameters and building an optimization model, and adjusting the power setpoint, the problem of voltage instability in multi-terminal DC transmission systems was solved, achieving stable system operation and power balance.
CN119419955BActive Publication Date: 2026-06-12GUANGDONG POWER GRID CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG POWER GRID CO LTD
- Filing Date
- 2024-11-04
- Publication Date
- 2026-06-12
AI Technical Summary
⚠Technical Problem
In multi-terminal DC transmission systems, after a converter station is taken out of service, changes in system operating conditions and parameters lead to voltage instability, and existing technologies lack effective overload control methods.
⚗Method used
An AC line overload control method based on a multi-terminal DC converter is constructed. By acquiring system parameters, an optimization model under constraints is built to generate active power and generator power setpoints. The controller is then used to adjust the power to maintain system stability.
🎯Benefits of technology
To ensure the stability of the multi-terminal DC transmission system after the converter station is upgraded, avoid voltage instability, and achieve optimized system operation and power balance.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119419955B_ABST
Abstract
The application discloses an AC line overload regulation method and device based on a multi-terminal DC converter, a terminal device and a computer readable storage medium, and the method comprises the following steps: acquiring AC line parameters, converter parameters, generator parameters and penalty parameters in a multi-terminal DC converter power system; according to the acquired parameters, taking the minimum amount of exceeding the constraint limit as the target, constructing an AC line overload scheduling model, and the AC system inequality constraint, the multi-terminal DC system inequality constraint, the line equality constraint and the Jacobian equality constraint corresponding to the model; under the constraint of various constraint conditions, when the amount of exceeding the constraint limit is the minimum, the active power set value of the converter and the active power set value of the generator are generated; the active power of the converter and the active power of the generator are respectively adjusted to the corresponding set values by the controller in the power system. Through the implementation of the application, it is ensured that the multi-terminal DC power transmission system can remain stable during AC line overload regulation.
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