Thermodynamic system static load flow rapid decoupling calculation method for quantity adjustment

Abstract

The invention discloses a thermodynamic system static load flow rapid decoupling calculation method for quantity adjustment, which comprises the following steps: 10) dividing heat supply network nodetypes, selecting decoupling points according to decoupling conditions to divide a heat supply network, and generating a main system and subsystems; 20) establishing a decoupling point variable interaction and iteration mechanism according to the topological characteristics of the mesh heat supply network to form a mesh heat supply network power flow decoupling calculation process; 30) establishinga decoupling point variable interaction and iteration mechanism according to the topological characteristics of the radial heat supply network to form a radial heat supply network power flow decoupling calculation process; and 40) establishing a complete decoupling process of the heat supply network of any topology, and calculating the static power flow of the thermodynamic system according to the decoupled heat supply network characteristics. According to the method, the heat supply network of any topology and any scale is decoupled into a plurality of radiation networks under the conditionthat network characteristics are not changed, the calculation scale is reduced, meanwhile, the problems of complex nonlinear calculation and initial value selection in a heat supply network hydraulicmodel are avoided, and the efficiency and stability of the thermodynamic system static load flow calculation method based on quantity adjustment are improved.

Description

technical field [0001] The invention belongs to the technical field of energy system operation optimization, and in particular relates to a fast decoupling calculation method for static power flow of a thermodynamic system for quantity regulation. Background technique [0002] With the development of the economy, the society's demand for energy technologies with high utilization rate and low pollution emission is increasing day by day. Different from the traditional single energy network, the integrated energy system realizes the comprehensive management of heterogeneous energy flows and the joint economic dispatch of multiple energy systems through the coupling of multiple types of energy networks, which is the development trend of the future social energy network. With typical energy conversion equipment such as combined heat and power units, heat pumps, electric boilers, and gas turbines, the grid, heating grid, and natural gas grid are closely linked to realize the inter...

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Problems solved by technology

However, for a long time, scholars have paid more attention to the accuracy of modeling, but there has been little research on the calculation efficiency of the combined power flow algorithm. Since the thermal system includes both hydraulic models and thermal models, the existing technology generally uses the sequential solution method to calculate the thermal system However, the improvement effect of this method is limited; and the hydraulic model in the network thermal system is highly nonlinear, and the existing research generally uses the Newton-Raphson method to solve it, which has low calculation efficiency and faces the problem of initial value selection

With the continuous advancement of energy technology, the scale of combined electric heating system is expanding and the network structure is becoming more and more complex. The traditional power flow calculation method of thermal power system based on the classic Newton-Raphson method or the forward push-back method is difficult to adapt to the large-scale system in the future. The simulation calculation requirements of the high-efficiency thermal system static power flow calculation method need to be further studied

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