A control method and system for electrolytic aluminum load participating in power grid emergency control
A technology of emergency control and control method, which is applied in the direction of power network operating system integration, information technology support system, AC network voltage adjustment, etc., and can solve the problems that the electrolytic aluminum power consumption characteristic model is not considered, and the impact cannot be quantitatively analyzed.
Active Publication Date: 2021-03-02
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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Problems solved by technology
The above literatures on the control of electrolytic aluminum do not consider the power consumption characteristic model of electrolytic aluminum, so it is impossible to quantitatively analyze the impact on the production of electrolytic aluminum after load control
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[0067] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0068] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Description...
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The invention discloses a control method and system for electrolytic aluminum load participating in emergency control of power grid. The control method comprises the following steps: collecting basic operation information of electrolytic aluminum load, inputting electrolytic aluminum load electrothermal model to obtain the removable load amount of electrolytic aluminum load and power consumption constraints; after the DC blocking fault occurs, the electrolytic aluminum load control method is used to cut off the total drop switch of the electrolytic aluminum; when the power consumption constraint of the electrolytic aluminum load is reached, the total drop switch of the electrolytic aluminum is closed to restore the power supply of the electrolytic aluminum. The invention not only proposes the electrothermal model of electrolytic aluminum load, but also proposes a direct control strategy for electrolytic aluminum based on the analysis of electricity constraints, and discusses the feasibility of electrolytic aluminum participating in the emergency control of the power grid. Effectiveness of direct load control strategies for aluminum loads and participation in grid emergency control.
Description
technical field [0001] The invention relates to a control method and system for an electrolytic aluminum load participating in emergency control of a power grid, and belongs to the technical field of network source coordinated control. Background technique [0002] When a fault occurs in the power system, such as UHV DC blocking, tripping of a large generator set, etc., causing a sudden imbalance between the power of the prime mover and the electromagnetic power of the generator, it may destroy the safety and stability of the system and cause a large-scale power outage. Load shedding is an effective measure to prevent system instability. For example, a converter station is equipped with a stabilization system that can quickly and reliably shed loads. However, the current load shedding scheme is too coarse-grained and can only reach the 110KV feeder level of the substation, and cannot distinguish between loads importance. When large-scale load shedding is required, the negat...
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IPC IPC(8): C25C3/16C25C3/20H02J3/14
CPCC25C3/16C25C3/20H02J3/14Y02B70/3225Y04S20/222
Inventor 刘萌张岩程定一王昕李宽李玉敦张国辉赵斌超张海静王亮
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY