Energy internet hybrid energy system and scheduling method thereof

Abstract

The invention relates to an energy internet hybrid energy system and a scheduling method thereof.The system comprises a renewable energy power generation unit, the renewable energy power generation unit is connected with a user load and electricity-to-gas equipment, and the user load is further connected with the electricity-to-gas equipment and an external power grid; the electricity-to-gas equipment is used for converting the electric energy output by the renewable energy power generation unit into hydrogen, a fuel cell is connected between the user load and the electricity-to-gas equipment, and the fuel cell converts the hydrogen output by the electricity-to-gas equipment into the electric energy again. Compared with the prior art, the method has the advantages that a continuous charging and discharging energy scheduling action decision is selected according to the current state, a depth deterministic policy gradient algorithm (DDPG) suitable for a large-scale continuous action space is adopted for training, and meanwhile, deep reinforcement learning is applied to energy internet hybrid energy scheduling control, so that an energy scheduling strategy is formulated and optimized; the total operation cost of the energy internet can be effectively reduced, and the consumption rate of renewable energy sources is improved.

Description

technical field [0001] The invention relates to the technical field of Energy Internet energy management and dispatching, in particular to an Energy Internet hybrid energy system and a dispatching method thereof. Background technique [0002] So far, the consumption of traditional fossil energy and the rapid growth of electricity demand have led to large-scale energy shortages and power outages in the world. It is estimated that by 2050, the proportion of electricity used in total energy will increase from the current 20% to 50%. Renewable energy, as a clean and environmentally friendly energy, is considered to be one of the effective alternatives to solve energy shortages and rapid growth in power demand and reduce the cost of energy Internet systems. The "Energy Internet" was first proposed in the book "The Third Industrial Revolution" in 2011, and was described as "a distributed, open and shared network based on renewable energy". As a powerful supplement to the central...

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Problems solved by technology

[0003] However, due to the lack of synchronization between renewable energy power generation and users' electricity demand in time, and the large-scale grid connection of renewable energy will have a certain impact on the stability of the Energy Internet, the consumption rate of renewable energy is very low. Most of the cases are discarded and turned into so-called "garbage electricity", which eventually leads to high operating costs of the system, which is not conducive to the sustainable and reliable development of the Energy Internet

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