Interconnected large power grid Jacobian matrix element regulation sensitivity optimization calculation method and system

Abstract

The invention provides an interconnected large power grid Jacobian matrix element regulation sensitivity optimization calculation method and system, and the scheme comprises the steps: carrying out derivation of a node voltage phase angle and a voltage amplitude based on the apparent power of a node, and determining the Jacobian matrix representation of an interconnected large power grid; performing derivation on regulation and control quantity parameters through elements in the Jacobian matrix, and determining a sensitivity mapping relation between the elements of the Jacobian matrix and the regulation and control quantity; wherein the intermediate result of the derivation process is multiplexed based on the characteristics of symmetrical distribution and high sparseness of non-zero elements; based on the obtained sensitivity mapping relation, obtaining an optimization calculation result of the Jacobian matrix element regulation sensitivity; according to the scheme, the intermediate result of the derivation process is multiplexed based on the characteristics of symmetrical distribution and high sparseness of non-zero elements, so that the real-time performance of Jacobian matrix regulation and control sensitivity calculation is effectively improved, and a foundation is laid for real-time prevention and control of an interconnected large power grid.

Description

technical field [0001] The disclosure belongs to the technical field related to electric power systems, and in particular relates to a method and system for calculating sensitivity optimization calculation of Jacobian matrix element control in large interconnected power grids. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The inventors found that when calculating the sensitivity of the control measures to the voltage stability index, the calculation of the control sensitivity of the Jacobian matrix is ​​required in the intermediate solution process of the existing method. For a large interconnected power grid with more than 10,000 nodes, the number of control variables is close to 10,000. If no optimization process design is adopted, the memory usage will reach TB level, making the control sensitivity calculation of voltage stability in...

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Problems solved by technology

For a large interconnected power grid with more than 10,000 nodes, the number of control variables is close to 10,000. If no optimization process design is adopted, the memory usage will reach TB level, making the control sensitivity calculation of voltage stability indicators unable to meet the requirements of online operation. , which leads to the inability to carry out real-time preventive control on the operation of the interconnected large power grid, affecting the normal operation of the power grid

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