An energy flow simulation method and device for an RLC transient model of an integrated energy system

Abstract

The invention provides an energy flow simulation method and a device for an RLC transient model of an integrated energy system. The dynamic simulation initial value is determined according to a pre-constructed RLC transient model of the integrated energy system. According to the initial value of the dynamic simulation, the RLC transient model of the integrated energy system is simulated to obtainthe head and end parameters of each branch in the integrated energy system. The energy flow fluctuation of the branch is determined by the head and end parameters of the branch. The RLC transient model of integrated energy system is constructed based on RLC component model and energy conversion component model, which reduces the difficulty of modeling and simulation, improves the reliability and accuracy of calculation, and converges quickly. The unified modeling of heterogeneous energy flow is completed, and the multi-time scale problem of dynamic simulation of integrated energy system is solved. The invention can adopt mature Runge-Kutta algorithm to solve the RLC transient model of the integrated energy system, which can reduce the difficulty of simulation calculation of the integratedenergy system.

Description

technical field [0001] The invention relates to the technical field of integrated energy systems, in particular to an energy flow simulation method and device for an RLC transient model of an integrated energy system. Background technique [0002] The integrated energy system can complete the coupling, conversion and distribution of various heterogeneous energies such as electricity, gas, heat and cold, break the state of independent operation of traditional energy systems, realize cascade utilization of energy, effectively improve the flexibility of energy supply, and improve Comprehensive energy utilization and economic benefits. [0003] Energy flow simulation is an important support for the evaluation of the operation status of integrated energy systems and the collaborative optimization of multi-heterogeneous energy flows. At present, the energy flow simulation method of the integrated energy system mainly follows the traditional energy flow calculation methods in vari...

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Problems solved by technology

[0006] In order to overcome the disadvantages of modeling and simulation in the prior art, such as high difficulty in modeling and simulation, low reliability, low calculation accuracy and slow convergence rate, the present invention provides an energy flow simulation method for the RLC transient model of an integrated energy system. The RLC transient model of the integrated energy system determines the initial value of the dynamic simulation; according to the initial value of the dynamic simulation, the RLC transient model of the integrated energy system is simulated to obtain the first and last parameters of each branch in the integrated energy system; through the first and last parameters of the branch, Determine the energy flow fluctuation of the branch; the RLC transient model of the integrated energy system is constructed based on the RLC component model and the energy conversion component model, which reduces the difficulty of modeling and simulation, improves the reliability and calculation accuracy, and has a fast convergence rate

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