Comprehensive control method and apparatus for power fluctuation-stabilizing energy storage system, and device

A comprehensive control apparatus for a power fluctuation-stabilizing energy storage system, applied to an integrated energy storage system of new energy power transmission, the integrated energy storage system of new energy power transmission comprising an integrated energy storage module, wherein the comprehensive control apparatus comprises a data acquisition module, an initial calculation module, a first judgment module, a second judgment module, and a control storage module;

• the data acquisition module being configured to acquire a topological structure diagram, a total power of generation, and an initial value of modal decomposition order of the integrated energy storage system of new energy power transmission, construct a grid-connected power mathematical model according to the topological structure diagram, and add I Gaussian white noises to the total power of generation to construct a power data set comprising I pieces of data;
• the initial calculation module being configured to calculate a first-order modal component and initial energy storage power by using a first-order modal decomposition calculation rule according to the initial value of modal decomposition order, and input the initial energy storage power into the grid-connected power mathematical model to obtain initial fluctuation rates corresponding to the first-order modal component at two time scales;
• the first judgment module being configured to, if the initial fluctuation rates at the two time scales meet a constraint condition, take the initial energy storage power as stabilizing power of the integrated energy storage system of new energy power transmission;
• the second judgment module being configured to, if the initial fluctuation rates at the two time scales do not meet the constraint condition, update the modal decomposition order;
• calculate an order modal component and energy storage power by using a kth modal decomposition calculation rule according to the modal decomposition order;
• and input the energy storage power into the grid-connected power mathematical model to obtain updated fluctuation rates corresponding to the order modal component at the two time scales until the updated fluctuation rates meet the constraint condition, and take energy storage power corresponding to the updated fluctuation rates meeting the constraint condition as the stabilizing power of the integrated energy storage system of new energy power transmission;
• and
• the control storage module being configured to control, by using an energy storage integrated control mode, the integrated energy storage module to store the stabilizing power.

A terminal device, comprising a processor and a memory;

• the memory being configured to store program code and transmit the program code to the processor;
• and
• the processor being configured to perform, according to instructions in the program code, a comprehensive control method for a power fluctuation-stabilizing energy storage system,
• wherein comprehensive control method is applied to an integrated energy storage system of new energy power transmission, and the integrated energy storage system of new energy power transmission comprising an integrated energy storage module, and
• wherein the comprehensive control method comprises:
• acquiring a topological structure diagram, a total power of generation, and an initial value of modal decomposition order of the integrated energy storage system of new energy power transmission, constructing a grid-connected power mathematical model according to the topological structure diagram, and adding I Gaussian white noises to the total power of generation to construct a power data set comprising I pieces of data;
• calculating a first-order modal component and initial energy storage power by using a first-order modal decomposition calculation rule according to the initial value of modal decomposition order, and inputting the initial energy storage power into the grid-connected power mathematical model to obtain initial fluctuation rates corresponding to the first-order modal component at two time scales;
• if the initial fluctuation rates at the two time scales meet a constraint condition, taking the initial energy storage power as stabilizing power of the integrated energy storage system of new energy power transmission;
• if the initial fluctuation rates at the two time scales do not meet the constraint condition, updating the modal decomposition order;
• calculating an order modal component and energy storage power by using a kth modal decomposition calculation rule according to the modal decomposition order;
• and inputting the energy storage power into the grid-connected power mathematical model to obtain updated fluctuation rates corresponding to the order modal component at the two time scales until the updated fluctuation rates meet the constraint condition, and taking energy storage power corresponding to the updated fluctuation rates meeting the constraint condition as the stabilizing power of the integrated energy storage system of new energy power transmission;
• and
• controlling, by using an energy storage integrated control mode, the integrated energy storage module to store the stabilizing power.