Multi-source electric power integration and stabilization system suitable for wet smelting plant and control method of multi-source electric power integration and stabilization system

Abstract

The invention provides a multi-source electric power integration and stabilization system suitable for a wet smelting plant and a control method of the multi-source electric power integration and stabilization system, and relates to the technical field of microgrids. The electric equipment connected to the direct-current bus comprises an electrolytic bath; the first power source connected to the direct-current bus comprises photovoltaic power generation equipment and energy storage equipment, the photovoltaic power generation equipment is electrically connected with the energy storage equipment, and the photovoltaic power generation equipment and the energy storage equipment are both connected with the direct-current bus through a direct-current converter; the second power source connected to the alternating current bus comprises an external power grid; the electric equipment accessed to the alternating current bus comprises alternating current electric equipment; the direct current bus and the alternating current bus are connected through a first branch comprising a first circuit breaker and a rectifier and a second branch comprising a second circuit breaker and an inverter; and the controller is used for controlling the opening and closing of the first circuit breaker and the second circuit breaker based on the operation states of the first power source and the second power source. The power supply stability of the wet smelting plant can be improved.

Description

Technical Field

[0001] The present invention relates to the field of microgrids, and in particular to a multi-source power integration stabilization system suitable for a hydrometallurgical plant and a control method thereof. Background Art

[0002] With the development of mining, the power supply problem encountered in the generation of hydrometallurgical plants, which are an important part of high-energy-consuming industries, has gradually become prominent. In the copper hydrometallurgical process, the electrolysis link is the key step to deposit copper from the solution, and this process requires a continuous and stable current supply. In the prior art, the power supply of the hydrometallurgical plant depends on the access to the external power grid, but power supply problems such as high power outage frequency, poor power quality, and unplanned power outages will cause the current in the electrolytic cell to be interrupted, so that copper ions cannot be continuously deposited on the cathode, which directly affects the purity and yield of electrolytic copper. During the interruption and recovery of the current, the electrochemical environment inside the electrolytic cell will also change, increasing the travel of insoluble impurities and further reducing the quality of copper. During the current termination and recovery process, the electrolytic cell and auxiliary equipment aggravate the wear of the equipment, affecting the service life and maintenance cost. In short, in the prior art, the unstable power supply of the external power grid of the hydrometallurgical plant affects the factory production. Summary of the invention

[0003] The present invention provides a multi-source power integration stabilization system and a control method thereof suitable for a hydrometallurgical plant, so as to solve the defect in the prior art that the unstable power supply of the external power grid affects the factory production, and realize the improvement of the stability of the power supply of the factory.

[0004] The present invention provides a multi-source power integration and stabilization system suitable for a hydrometallurgical plant, comprising: a DC bus and an AC bus; The electrical equipment connected to the DC bus includes: an electrolytic cell; The first power source connected to the DC bus includes: a photovoltaic power generation device and an energy storage device, the photovoltaic power generation device and the energy storage device are electrically connected, the photovoltaic power generation device is used to generate direct current, supply power according to load requirements and guide excess electric energy to the energy storage device for storage, and the photovoltaic power generation device and the energy storage device are respectively connected to the DC bus through a DC converter; The second power source connected to the AC bus includes: an external power grid; The electrical equipment connected to the AC bus includes: AC electrical equipment; The DC bus and the AC bus are connected via a first branch and a second branch respectively, the first branch includes a first circuit breaker and a rectifier, and the second branch includes a second circuit breaker and an inverter; The system further includes a controller configured to control opening and closing of the first circuit breaker and the second circuit breaker based on operating states of the first power source and the second power source.

[0005] According to a multi-source power integration and stabilization system suitable for a hydrometallurgical plant provided by the present invention, the second power source also includes a generator; and a third circuit breaker is included between the DC bus and the external power grid.

[0006] The present invention also provides a control method for the multi-source power integration stabilization system applicable to a hydrometallurgical plant based on the above, comprising: Acquiring the power of the first power source and the on / off state of the second power source; When the power of the first power source is greater than a preset power threshold, the second circuit breaker is controlled to close and the first circuit breaker is controlled to open. When the power of the first power source is not greater than the preset power threshold, the opening and closing of the first circuit breaker and the second circuit breaker are controlled based on the state of the second power source.

[0007] According to a control method provided by the present invention, the control of the opening and closing of the first circuit breaker and the second circuit breaker based on the on / off state of the second power source includes: When the external power grid is in a non-disconnected state, controlling the first circuit breaker to close and the second circuit breaker to open; When the external power grid is in a disconnected state, the second circuit breaker is controlled to be closed and the first circuit breaker is controlled to be opened.

[0008] According to a control method provided by the present invention, the control of the opening and closing of the first circuit breaker and the second circuit breaker based on the on / off state of the second power source further includes: Acquiring an electrolysis temperature of the electrolytic cell, and determining an operating power reduction range of the electrolytic cell based on the electrolysis temperature and the thermal inertia of the electrolytic cell; The operating power reduction of the electrolytic cell is controlled within the operating power reduction range.

[0009] According to a control method provided by the present invention, the second power source further includes a generator; when the external power grid is in a disconnected state, the second circuit breaker is controlled to be closed, and after the first circuit breaker is opened, the method further includes: The generator is controlled to start supplying power to the AC bus.

[0010] The present invention also provides a control device, comprising: A state data acquisition module, used to acquire the power of the first power source and the on / off state of the second power source; A control module is used to control the second circuit breaker to close and the first circuit breaker to open when the power of the first power source is greater than a preset power threshold, and to control the opening and closing of the first circuit breaker and the second circuit breaker based on the on / off state of the external power grid when the power of the first power source is not greater than the preset power threshold.

[0011] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the control methods described above when executing the computer program.

[0012] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the control method described above is implemented.

[0013] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the control methods described above.

[0014] The multi-source power integration and stabilization system and control method thereof suitable for a hydrometallurgical plant provided by the present invention are configured by setting a DC bus and an AC bus, wherein the electrolyzer is connected to the DC bus, a first power source including a photovoltaic power generation device and an energy storage device is connected to the DC bus, two connected branches are configured between the DC bus and the AC bus, one branch includes a first circuit breaker and a rectifier, and the other branch includes a second circuit breaker and an inverter, a second power source including an external power grid is connected to the AC bus, and the AC bus is also connected to other AC power-consuming equipment, and a controller controls the opening and closing of the first circuit breaker and the second circuit breaker based on the operating status of the first power source and the second power source. In the system provided by the present invention, the photovoltaic power generation equipment can store excess electricity in the energy storage equipment, and the output power of the photovoltaic power generation equipment and the energy storage equipment can be directly supplied to the electrolytic cell, while the power provided by the external power grid is directly supplied to the AC user equipment in the factory through the AC bus. This can reduce the loss caused by power conversion while ensuring the power supply in the factory. At the same time, an inverter and a rectifier are arranged between the DC bus and the AC bus, and power conversion can be performed when the operation of the AC power source is unstable to achieve a stable supply of factory power, thereby improving the power supply stability of the hydrometallurgical plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the architecture of a multi-source power integration and stabilization system suitable for a hydrometallurgical plant provided by the present invention.

[0017] Figure 2 It is a flow chart of the control method provided by the present invention.

[0018] Figure 3 It is a structural schematic diagram of the control device provided by the present invention.

[0019] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the prior art, the power supply of a hydrometallurgical plant depends on the access to an external power grid. However, power supply problems such as high frequency of power outages, poor power quality, and unplanned power outages can cause current interruptions in the electrolytic cell, making it impossible for copper ions to continuously deposit on the cathode, which directly affects the purity and yield of electrolytic copper. During the interruption and recovery of the current, the electrochemical environment inside the electrolytic cell will also change, increasing the flow of insoluble impurities and further reducing the quality of copper. During the current termination and recovery process, the electrolytic cell and auxiliary equipment will experience increased wear and tear on the equipment, affecting their service life and maintenance costs. In short, in the prior art, the unstable power supply from the external power grid of a hydrometallurgical plant affects factory production.

[0022] In view of the defect in the prior art that the power supply of a hydrometallurgical plant depends on an external power grid, and the unstable power supply of the external power grid affects the factory production, the present invention provides a multi-source power integration stabilization system and a control method suitable for a hydrometallurgical plant, so as to achieve the effect of improving the power supply stability of the hydrometallurgical plant.

[0023] Combine the following Figure 1 The present invention provides a multi-source power integration and stabilization system suitable for a hydrometallurgical plant. Figure 1 As shown, the multi-source power integration and stabilization system for a hydrometallurgical plant provided by the present invention comprises: a DC bus and an AC bus, the power-consuming equipment connected to the DC bus comprises: an electrolyzer, and the power-consuming equipment connected to the AC bus comprises other loads in the factory except the electrolyzer (AC power-consuming equipment, such as lighting and Figure 1The motor shown in the figure, etc.). The second power source connected to the AC bus includes: an external power grid, which can be a park power grid of the park where the factory is located. The first power source connected to the DC bus includes: photovoltaic power generation equipment and energy storage equipment, which are connected to each other so that the photovoltaic power generation equipment generates direct current under sunlight, supplies power according to load demand, and guides excess electric energy to the energy storage device for storage. A direct current converter (DC-DC converter) is arranged between the first power source and the DC bus, that is, the photovoltaic power generation equipment and the energy storage equipment are respectively connected to the DC bus through a direct current converter.

[0024] By directly connecting the electrolytic cell and the first power source to the DC bus, the output power of the first power source can be supplied to the electrolytic cell with only one DC-DC conversion, thereby reducing the loss of the output power of the first power source, reducing system complexity and failure probability, and reducing overall management difficulty and operation and maintenance costs.

[0025] The DC bus and the AC bus are connected through a first branch and a second branch respectively, the first branch includes a first circuit breaker S1 and a rectifier, and the second branch includes a second circuit breaker and an inverter. Based on the operating status of the first power source and the second power source, the opening and closing of the first circuit breaker and the second circuit breaker are controlled.

[0026] In the system provided by the present invention, the photovoltaic power generation equipment can store excess electricity in the energy storage equipment, and the output power of the photovoltaic power generation equipment and the energy storage equipment can be directly supplied to the electrolytic cell, while the power provided by the external power grid is directly supplied to the AC user equipment in the factory through the AC bus. This can reduce the loss caused by power conversion while ensuring the power supply in the factory. At the same time, an inverter and a rectifier are arranged between the DC bus and the AC bus, and power conversion can be performed when the operation of the AC power source is unstable to achieve a stable supply of factory power, thereby improving the power supply stability of the hydrometallurgical plant.

[0027] Specifically, in the system provided by the present invention, the operating state of the external power grid in the second power source is divided into two types: disconnected state and non-disconnected state. Specifically, in the production process of the hydrometallurgical plant, the possible states of the external power grid include three situations: normal operation, fluctuating operation and power outage, wherein normal operation means that the power supply of the external power grid is stable and the system operates within the expected parameter range; fluctuating operation means that the voltage or frequency of the external power grid fluctuates, which is still within the acceptable range of the system, but will affect the performance of some equipment; power outage means that the external power grid completely loses power supply. The method provided by the present invention comprehensively considers the normal operation and fluctuating operation states as a non-disconnected state.

[0028] In one possible implementation, Figure 1As shown, a third circuit breaker S3 is included between the DC bus and the external power grid. When the external power grid is in a non-disconnected state, the third circuit breaker S3 is closed, and when the external power grid is in a disconnected state, the third circuit breaker S3 is opened. By setting the third circuit breaker S3, the external power grid can be prevented from impacting the system when it is powered on again after a power outage.

[0029] Specifically, the preset power threshold corresponds to the sum of the working power of the electrolyzer and the working efficiency of the AC power equipment. When the power of the first power source is greater than the preset power threshold, that is, the power of the first power source is sufficient, the first circuit breaker in the first branch is in the open position, and the second circuit breaker in the second branch is in the closed position, so that the first power source is connected to the DC bus through a DC converter, and the electrolyzer is powered via the DC bus, and the DC power is converted into AC power through the inverter in the second branch. When the external power grid is in a non-disconnected state, the first power source can be used together with the external power grid through the AC bus to power other loads such as motors in the hydrometallurgical plant. If the external power grid operates stably, the output power of the photovoltaic power generation equipment and the energy storage equipment can be fully utilized to reduce the electricity cost of the factory. If the external power grid fluctuates, the load size can be adjusted through the energy storage equipment to maintain the voltage stability on the electrolyzer side. When the external power grid is disconnected, since the power of the first power source is greater than the preset power threshold, the first power source can provide power to the electrolytic cell to maintain its normal production, and can independently establish an AC voltage frequency through the inverter to power the AC system to maintain the normal operation of other AC loads in the factory.

[0030] Furthermore, when the power of the first power source is not greater than the preset power threshold, the opening and closing of the first circuit breaker and the second circuit breaker are determined based on the state of the external power grid. Specifically, when the external power grid is in a non-disconnected state, the first circuit breaker is closed and the second circuit breaker is opened. In this way, on the one hand, the photovoltaic device and the energy storage device are connected to the DC bus through the DC converter to supply power to the electrolyzer. On the other hand, the electric energy of the external power grid can be converted from AC to DC through the first branch through the rectifier, and the DC bus is used together with the photovoltaic device and the energy storage device to supply power to the electrolyzer, thereby ensuring the stability of the power supply of the electrolyzer.

[0031] When the power of the first power source is not greater than the preset power threshold and the external power grid is disconnected, there is a shortage of power supply in the factory. At this time, the first circuit breaker is opened and the second circuit breaker is closed. The photovoltaic equipment and the energy storage equipment convert direct current into alternating current through the inverter, first ensuring that the voltage and frequency of the alternating current system are not affected, and at the same time reducing the power consumption of the electrolyzer when permitted. Specifically, the electrolysis temperature of the electrolyzer is obtained, and the operating power reduction range of the electrolyzer is determined based on the electrolysis temperature and the thermal inertia of the electrolyzer, and the operating power reduction of the electrolyzer is controlled within the operating power reduction range.

[0032] After the operating power of the electrolytic cell is reduced, the temperature will not immediately decrease linearly due to thermal inertia. Therefore, in the system provided by the present invention, when the power of the first power source is not greater than the preset power threshold and the external power grid is in a disconnected state, the operating power of the electrolytic cell is controlled to be reduced within the operating power reduction range of the electrolytic cell, thereby ensuring that the operation of the AC system and the electrolytic cell will not be temporarily affected, achieving a smooth transition when the external power grid is powered off, and ensuring the power supply stability of the hydrometallurgical plant.

[0033] Furthermore, the second power source connected to the AC bus also includes a generator, such as Figure 1 The diesel generator shown in the figure, of course, can be understood to be other types of generators, such as gas generators, etc. When the external power grid is disconnected and the power of the first power source is not greater than the preset power threshold, after controlling the second circuit breaker to close and the first circuit breaker to open, the controller also controls the generator to start supplying power to the AC bus. In this way, during the transition process after the external power grid is powered off, the generator can be introduced to support the frequency of the AC power equipment, and at the same time, the frequency supply burden of the first power source to the AC power equipment can be reduced, so that the first power source can supply more power to the electrolyzer and ensure the power consumption of the electrolyzer.

[0034] Based on the above multi-source power integration and stabilization system applicable to a hydrometallurgical plant, the present invention further provides a control method, which can be executed by a controller in the above multi-source power integration and stabilization system applicable to a hydrometallurgical plant, such as Figure 2 As shown, the control method comprises the steps of: S110, obtaining the power of the first power source and the on / off state of the second power source; S120. When the power of the first power source is greater than a preset power threshold, the second circuit breaker is controlled to close and the first circuit breaker is controlled to open. When the power of the first power source is not greater than the preset power threshold, the first circuit breaker and the second circuit breaker are controlled to open and close based on the state of the second power source.

[0035] The method provided by the present invention controls the on / off of branches respectively provided between the DC bus and the AC bus, which include an inverter and a rectifier, according to the states of a first power source connected to the DC bus and a second power source connected to the AC bus. This method can perform power conversion when the operation of the AC power source is unstable to achieve a stable supply of factory power, thereby improving the power supply stability of the hydrometallurgical plant.

[0036] Further, based on the on / off state of the second power source, controlling the opening and closing of the first circuit breaker and the second circuit breaker includes: When the external power grid is in a non-disconnected state, the first circuit breaker is controlled to be closed and the second circuit breaker is controlled to be opened; When the external power grid is in a disconnected state, the second circuit breaker is controlled to close and the first circuit breaker is controlled to open.

[0037] For details, please refer to the description of the on / off state of the first circuit breaker and the second circuit breaker in the system based on the on / off state of the second power source in the multi-source power integration stabilization system applicable to the hydrometallurgical plant described above.

[0038] Based on the on / off state of the second power source, controlling the opening and closing of the first circuit breaker and the second circuit breaker also includes: Acquiring an electrolysis temperature of the electrolytic cell, and determining an operating power reduction range of the electrolytic cell based on the electrolysis temperature and the thermal inertia of the electrolytic cell; The operating power reduction of the electrolytic cell is controlled within the operating power reduction range.

[0039] For details, please refer to the description of reducing the operating power of the electrolytic cell in the multi-source power integration and stabilization system applicable to the hydrometallurgical plant described above.

[0040] When the external power grid is in a disconnected state, the second circuit breaker is controlled to close, and after the first circuit breaker is opened, the method further includes: Control the generator to start supplying power to the AC bus.

[0041] For details, please refer to the instructions for controlling the start-up of generators in the multi-source power integration and stabilization system applicable to hydrometallurgical plants described above.

[0042] The control device provided by the present invention is described below. The control device described below and the control method described above can be referred to in correspondence with each other. Figure 3 As shown, the control device provided by the present invention includes the following modules: A state data acquisition module 310, the state data acquisition module 310 is used to acquire the power of the first power source and the on / off state of the second power source; The control module 320 is used to control the second circuit breaker to close and the first circuit breaker to open when the power of the first power source is greater than a preset power threshold, and to control the opening and closing of the first circuit breaker and the second circuit breaker based on the on / off state of the external power grid when the power of the first power source is not greater than the preset power threshold.

[0043] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the control method, which includes: obtaining the power of the first power source and the on / off state of the second power source; when the power of the first power source is greater than a preset power threshold, controlling the second circuit breaker to close and the first circuit breaker to open; when the power of the first power source is not greater than the preset power threshold, controlling the opening and closing of the first circuit breaker and the second circuit breaker based on the state of the second power source.

[0044] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0045] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control method provided by the above-mentioned methods, which includes: obtaining the power of a first power source and the on / off state of a second power source; when the power of the first power source is greater than a preset power threshold, controlling the second circuit breaker to close and the first circuit breaker to open; when the power of the first power source is not greater than the preset power threshold, controlling the opening and closing of the first circuit breaker and the second circuit breaker based on the state of the second power source.

[0046] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the control method provided by the above-mentioned methods, the method comprising: obtaining the power of a first power source and the on / off state of a second power source; when the power of the first power source is greater than a preset power threshold, controlling the second circuit breaker to close and the first circuit breaker to open; when the power of the first power source is not greater than the preset power threshold, controlling the opening and closing of the first circuit breaker and the second circuit breaker based on the state of the second power source.

[0047] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0048] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-source power integration and stabilization system suitable for a hydrometallurgical plant, characterized in that: include: DC bus and AC bus; The electrical equipment connected to the DC bus includes: an electrolytic cell; The first power source connected to the DC bus includes: a photovoltaic power generation device and an energy storage device, the photovoltaic power generation device and the energy storage device are electrically connected, the photovoltaic power generation device is used to generate direct current, supply power according to load requirements and guide excess electric energy to the energy storage device for storage, and the photovoltaic power generation device and the energy storage device are respectively connected to the DC bus through a DC converter; The second power source connected to the AC bus includes: an external power grid; The electrical equipment connected to the AC bus includes: AC electrical equipment; The DC bus and the AC bus are connected via a first branch and a second branch respectively, the first branch includes a first circuit breaker and a rectifier, and the second branch includes a second circuit breaker and an inverter; The system further includes a controller configured to control opening and closing of the first circuit breaker and the second circuit breaker based on operating states of the first power source and the second power source.

2. The multi-source power integration and stabilization system suitable for a hydrometallurgical plant according to claim 1 is characterized in that: The second power source further includes a generator; and a third circuit breaker is provided between the DC bus and the external power grid.

3. The control method for a multi-source power integration and stabilization system applicable to a hydrometallurgical plant according to any one of claims 1 to 2, characterized in that: include: Acquiring the power of the first power source and the on / off state of the second power source; When the power of the first power source is greater than a preset power threshold, the second circuit breaker is controlled to close and the first circuit breaker is controlled to open. When the power of the first power source is not greater than the preset power threshold, the opening and closing of the first circuit breaker and the second circuit breaker are controlled based on the state of the second power source.

4. The control method according to claim 3, characterized in that: The controlling the opening and closing of the first circuit breaker and the second circuit breaker based on the on / off state of the second power source comprises: When the external power grid is in a non-disconnected state, controlling the first circuit breaker to close and the second circuit breaker to open; When the external power grid is in a disconnected state, the second circuit breaker is controlled to be closed and the first circuit breaker is controlled to be opened.

5. The control method according to claim 3, characterized in that: The method of controlling the opening and closing of the first circuit breaker and the second circuit breaker based on the on / off state of the second power source further includes: Acquiring an electrolysis temperature of the electrolytic cell, and determining an operating power reduction range of the electrolytic cell based on the electrolysis temperature and the thermal inertia of the electrolytic cell; The operating power reduction of the electrolytic cell is controlled within the operating power reduction range.

6. The control method according to claim 4, characterized in that: The second power source further includes a generator; when the external power grid is in a disconnected state, the second circuit breaker is controlled to be closed, and after the first circuit breaker is opened, the method further includes: The generator is controlled to start supplying power to the AC bus.

7. A control device for a multi-source power integration and stabilization system applicable to a hydrometallurgical plant based on any one of claims 1-2, characterized in that: include: A state data acquisition module, used to acquire the power of the first power source and the on / off state of the second power source; A control module is used to control the second circuit breaker to close and the first circuit breaker to open when the power of the first power source is greater than a preset power threshold, and to control the opening and closing of the first circuit breaker and the second circuit breaker based on the on / off state of the external power grid when the power of the first power source is not greater than the preset power threshold.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the control method according to any one of claims 3 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method according to any one of claims 3 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the control method according to any one of claims 3 to 6 is implemented.

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