Pneumoelectric integrated energy system distribution network optimization method considering pneumoelectric joint demand response

Abstract

The invention discloses a pneumoelectric integrated energy system distribution network optimization method considering pneumoelectric joint demand response, and the method comprises the steps: establishing a pneumoelectric integrated energy system distribution network optimization operation model through employing the minimization of the operation cost of a distribution network system as a targetand combining with a set related operation constraint; aiming at the nonlinear alternating-current power flow equation constraint of the power distribution network, adopting a second-order cone relaxation method for processing; aiming at a nonlinear Weymuth power flow equation of the gas distribution network, proposing an enhanced second-order cone relaxation method of adding a gas pressure penalty term into a target function to further tighten a relaxed constraint condition, and converting a non-convex optimization problem into a convex optimization problem to be solved, so that relatively high relaxation precision is achieved. On the basis of a distribution network optimization scheduling model, an operation strategy for improving the new energy consumption capability and the operation economy of a distribution network system by utilizing gas-electricity joint demand response is provided.

Description

technical field [0001] The invention belongs to the technical field of optimized operation of an integrated energy system, and in particular relates to a distribution network optimization method of an integrated gas-electricity energy system considering gas-electricity combined demand response. Background technique [0002] Low-cost, efficient and environmentally friendly natural gas has become the second largest source of energy consumption in the world, which has greatly promoted the rapid development of gas-fired units (NGU). In recent years, the significant increase in the investment of gas-fired units and the increasing maturity of power-to-gas technology have strengthened the interdependence between power and natural gas systems, laying the foundation for the formation of a gas-power integrated energy system. The gas-electricity integrated energy system uses the slow inertia of the natural gas system to convert excess electric energy such as new energy power generation...

AI Technical Summary

Problems solved by technology

Due to some physical operating characteristics in the electricity and natural gas distribution network, most of the established optimal operation models of the gas-electricity integrated system are nonlinear and non-convex, which will bring great difficulties to the model solution

Scholars at home and abroad have done a lot of research on the proc

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