Unit combination method and device taking electrolytic aluminum heat conduction characteristics into consideration
A unit combination, electrolytic aluminum technology, applied in the field of electrical engineering, can solve problems such as complex model and unfavorable unit combination solution, to achieve the effect of ensuring safety and improving flexibility
Pending Publication Date: 2022-03-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
However, considering the participation of electrolytic aluminum load in demand response, it is necessary to carry out scientific and reasonable modeling of the aluminum electrolytic cell, not only to avoid adverse effects on the production equipment of electrolytic aluminum, but also to avoid the model being too complex and not conducive to the solution of the unit combination
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[0155] First, verify the rationality of the heat conduction model of the aluminum electrolytic cell. Take a single electrolytic cell as an example to illustrate. Since the electrolytic cells are connected in series and the current intensity is the same, the state of a single electrolytic cell can also represent the state of the electrolytic cell series in which it is located. state.
[0156] Assuming that the normal input current intensity of the aluminum electrolytic cell is 400kA, when t=1h, the current drops by 1kA, and the temperature change of the electrolyte in the cell is as follows: image 3 As shown in (a), if the current is restored to the normal level at t=10h, the electrolyte temperature changes as image 3 In (b) shown. It can be seen from the figure that when the current drops by 1kA, the electrolyte temperature drops from fast to slow, and the steady-state temperature drops by about 2.26°C compared with the normal temperature, which is in line with the actual p...
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The invention discloses a unit combination method and device considering the heat conduction characteristic of electrolytic aluminum, and belongs to the field of electrical engineering.The method comprises the steps that the heat conduction characteristic of an aluminum electrolysis cell is considered, and a heat conduction model of the aluminum electrolysis cell is established; based on the aluminum electrolysis cell heat conduction model, an electrolytic aluminum participation demand response model is established; establishing a unit combination model considering electrolytic aluminum participation demand response; and solving the model by adopting a mixed integer linear programming algorithm to obtain an optimal scheduling scheme of the power system. According to the unit combination method considering the heat conduction characteristic of the electrolytic aluminum, the safety when the electrolytic aluminum participates in the demand response can be effectively guaranteed, an electrolytic aluminum enterprise can be promoted to participate in the demand response, and the scheduling flexibility and the system operation economy are improved.
Description
technical field [0001] The invention belongs to the field of electrical engineering, and more specifically relates to a unit combination method and device considering the heat conduction characteristics of electrolytic aluminum. Background technique [0002] With the formulation of my country's "dual carbon goals", energy development urgently needs to be transformed and upgraded to build a clean, low-carbon and efficient energy system. On the power production side, renewable energy such as wind power and photovoltaics will gradually replace traditional fossil energy. However, large-scale wind power grid integration also intensifies the impact of wind power randomness and volatility, and puts forward new requirements for the security and stability of the power grid. Traditional thermal power units are subject to many operating requirements such as output restrictions and slope restrictions, and may not be able to adapt to the impact of wind power fluctuations in a timely man...
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Login to View More IPC IPC(8): G06F30/20G06F111/04G06F119/08
CPCG06F30/20G06F2119/08G06F2111/04
Inventor 王成龙艾小猛方家琨周博乐零陵姚伟文劲宇
Owner HUAZHONG UNIV OF SCI & TECH