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Hydrogen-water energy system and long and short term optimization control method and device thereof

An energy system and optimal control technology, applied in the field of multi-energy systems, can solve the problems of discontinuity, solar energy instability, low energy density, etc., and achieve the effect of eliminating carbon emissions, realizing cross-season utilization, and minimizing operating costs.

Active Publication Date: 2022-06-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solar energy is affected by regular changes in geography, day and night, and seasons, as well as random factors such as cloudy, cloudy, and rainy. The energy density is low, usually less than one kilowatt per square meter.
In addition, solar energy is unstable and discontinuous with time and weather

Method used

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  • Hydrogen-water energy system and long and short term optimization control method and device thereof
  • Hydrogen-water energy system and long and short term optimization control method and device thereof
  • Hydrogen-water energy system and long and short term optimization control method and device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] refer to image 3 As shown, this embodiment provides a long-term and short-term scheduling method for a hydrogen-water cycle system with seasonal energy storage, constructs a mathematical model of a multi-energy system based on hydrogen energy and water cycle and includes seasonal storage, and determines an objective function and related constraints. Through the combination of long-term seasonal storage and day-to-day short-term storage, the user's demand imbalance between seasons and days and the volatility and imbalance of renewable energy can be solved. By putting some key constraints, such as daytime coupling constraints, seasonal and daytime coupling constraints, etc., into the objective function, we can weaken the coupling constraints in the model and reduce the difficulty of solving the system model, which includes the following steps:

[0050] S1. Collect current weather data and user demand data, and predict the user demand load and the weather data for the nex...

Embodiment 2

[0195] refer to figure 2 , An operation optimization device for a hydrogen-water circulation system with seasonal energy storage, characterized in that it includes an information collection module, an analysis processing module and a central control module; the output end of the information collection module is connected with the input end of the analysis processing module , the output end of the analysis processing module is connected with the input end of the central control module.

[0196] The information collection module is used to collect current weather data, user demand data and real-time reading of storage tank data. Storage tanks include: hydrogen storage tanks, seasonal hydrogen storage tanks, cold water tanks, hot water tanks and seasonal heat storage tanks, mainly including: The hydrogen concentration, water temperature, etc., transmit the predicted user demand load, weather data and storage tank data to the analysis and processing module; the analysis and proce...

Embodiment 3

[0199] An embodiment of the present invention provides an operation optimization device for a hydrogen-water circulation system with seasonal energy storage, which is used to perform the above-mentioned long-term and short-term dispatch operation based on hydrogen energy, various energy storage devices, and a multi-energy system including seasonal energy storage. Optimization. The information collection module can be divided into functional modules according to the above method examples. For example, the real-time collection part of the information collection model can be divided into a separate area, because the accuracy and difficulty of real-time collection are high, and it can be completed by a separate hardware device. This part of the function can also be realized by programming software. It should be noted that the division of modules in the embodiments of the present invention is schematic, and is only a logical function division, and other division methods may be used...

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Abstract

The invention discloses a hydrogen-water energy system and a long-term and short-term optimization control method and device thereof. The system is composed of a fuel cell, an electrolytic cell, an absorption refrigerator, a solar power generation system, a solar heat collector, a wind generating set, a hydrogen storage tank, a compressor, a hot water tank and a cold water tank. According to the method, expected scenes of wind power generation, photovoltaic power generation, solar heat production and user electric cold and hot demand are established according to predicted values and deviations of wind power, solar radiation intensity, electric demand, cold demand and hot demand, and mixed integer linear optimization is carried out on a system by taking the minimum average operation cost under all the scenes as a target so as to research an operation strategy of the system. In the optimization problem, the operation strategies of the fuel cell and the absorption refrigerator in all situations are kept the same, and the operation strategies of the electrolytic cell, the hydrogen storage tank, the hot water tank and the cold water tank in different situations are variable, so that the purpose of absorbing renewable energy sources is achieved.

Description

technical field [0001] The invention belongs to the technical field of multi-energy systems, and in particular relates to a hydrogen-water energy system and a long- and short-term optimal control method and device thereof. Background technique [0002] The world economy based on fossil fuels is currently facing the dual challenges of resource depletion and environmental pollution, and new energy has become an inevitable choice to save human industrial civilization. For a long time, almost the entire world economy has been built on fossil fuels. The rapid economic development consumes a lot of non-renewable energy, such as coal, oil, natural gas and so on. According to the research of many authoritative energy institutions, in the first half of the 21st century, the resource carrier of the world economy will be almost exhausted, which also means that the industrial civilization based on the fossil economy will come to an end. [0003] Among all kinds of renewable energy, so...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/28H02J3/38F24D15/04F25B15/00F28D20/00
CPCH02J3/003H02J3/28H02J3/381F24D15/04F25B15/00F28D20/00H02J2203/20H02J2300/24H02J2300/30H02J2300/28Y02E60/14
Inventor 徐占伯张艺潇董翔翔吴江邵柯刘晋辉管晓宏
Owner XI AN JIAOTONG UNIV
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