Coordinated scheduling method for electricity-hydrogen multi-energy complementary DC microgrid

Abstract

The invention discloses a coordinated scheduling method for an electricity-hydrogen multi-energy complementary DC microgrid, and the method is established based on the electricity-hydrogen multi-energy complementary DC microgrid, and comprises the following steps: initializing each system; performing the day-ahead prediction of the output of a renewable energy power generation system and the localload demand; performing day-ahead economic dispatching based on the predicted power, the electric energy storage system reserve SOC and the hydrogen energy system reserve SOHC; predicting photovoltaic, fan output and local load requirements in real time in an ultra-short period; and carrying out real-time rolling optimization on the day-ahead economic dispatching result according to the ultra-short-term prediction result. According to the invention, through day-ahead and online coordinated scheduling, the normal operation of the electricity-hydrogen multi-energy complementary DC microgrid isensured, the optimal operation of the system is ensured, and the influence caused by uncertainty is reduced; and the economy of the system is improved, and the working efficiency of the microgrid is improved.

Description

technical field [0001] The invention belongs to the technical field of DC micro-grids, in particular to an electric-hydrogen multi-energy complementary DC micro-grid coordination scheduling method. Background technique [0002] With the global economic growth, social progress and population increase, the global energy demand continues to increase. With the continuous growth of power demand, under the dual pressure of energy demand and environmental protection, the technical fields related to distributed power generation, which can not only improve energy utilization rate, but also make full use of renewable energy, have been paid attention to. Vigorously developing distributed power generation technology and making full use of renewable energy have become the main way to solve future energy problems. [0003] Compared with the large power grid, the development history of the micro-grid is relatively short, but the application and promotion of the micro-grid has become incre...

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Problems solved by technology

[0005] There are few coordinated scheduling methods based on electricity-hydrogen multi-energy complementary DC microgrid in China. International scheduling methods are mainly divided into two types: day-ahead scheduling and online scheduling based on a single optimization method. Non-linear function, and the day-ahead scheduling method does not consider the error between the day-ahead predicted value and the actual value, and the online scheduling is generally not a global optimization, and the optimization results have certain deviations with different systems, and the energy storage system of the energy storage system is not in good condition

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