Regional integrated energy system operation robust optimization method considering electricity-to-gas conversion and uncertainty

Abstract

The invention discloses a regional integrated energy system operation robust optimization method considering electricity-to-gas conversion and uncertainty, and the method comprises the steps: carryingout the detailed modeling of an electricity-to-gas conversion process according to the principle of an electrochemical reaction, and analyzing the coupling relation between different energy forms ina matrix mode based on an energy center model; establishing a regional comprehensive energy system operation optimization model considering the uncertainty of various load prediction powers, and establishing a two-stage robust optimization model according to a polyhedral uncertain interval; and decomposing the two-stage robust optimization model into a main problem and a sub-problem, converting the sub-problem into an optimization problem of a single target, and carrying out iterative solution to obtain a comprehensive energy system robust optimization scheme. According to the method, the potential of complementary mutual relief and flexible scheduling among multiple energy forms is fully excavated, wind curtailment can be reduced, and the operation economy and flexibility of the comprehensive energy system are improved; and the contradiction between the operation risk and the cost can be coordinated according to the actual condition of the regional integrated energy system.

Description

technical field [0001] The invention belongs to the field of operation optimization of comprehensive energy systems, and in particular relates to a robust optimization method for operation of regional comprehensive energy systems considering power-to-gas and uncertainty. Background technique [0002] The integrated energy system (RIES) is considered to be the main form of carrying energy for the future human society. By realizing the coordinated planning and complementarity among various heterogeneous energy subsystems, it can effectively promote the on-site consumption of renewable energy while meeting the diversified energy demand in the system. Since RIES contains a variety of load types, power forecasting is highly uncertain and time-varying, the energy optimal dispatching method of the integrated energy system faces greater challenges compared with the dispatching method of the traditional microgrid. [0003] Power-to-gas (P2G) technology, as one of the important suppo...

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Problems solved by technology

[0005] Purpose of the invention: In order to solve the problem of insufficient consideration of the power-to-gas link and uncertain factors in the existing regional integrated energy system operation ...

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