A self-diagnosis and automatic interlocking protection system and method for short-circuit junction of aluminum electrolysis

Abstract

A self-diagnosis and automatic interlocking protection system and method for short-circuit of aluminum electrolysis, belonging to the field of aluminum electrolysis production control technology, including a single slot voltage acquisition and judgment terminal, a grouped multi-slot voltage accumulation acquisition and judgment terminal, an edge data collector, an industrial switch, and a remote control platform. The single slot voltage acquisition and judgment terminal and the grouped multi-slot voltage accumulation acquisition and judgment terminal continuously and in real time collect and judge the voltage. The edge data collector transmits the information of each terminal to the remote control platform. The remote control platform compares and detects the front-end comprehensive judgment data with the production data in the original power system, and issues an alarm prompt and interlocking protection execution signal if there is an abnormality. The present invention can effectively and timely discover the abnormal working condition of the short-circuit of the aluminum electrolysis busbar column, and improve the stability and safety of the aluminum electrolysis production operation.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum electrolysis production control, and in particular relates to a short-circuit self-diagnosis and automatic interlocking protection system and method for aluminum electrolysis. Background Art

[0002] Aluminum electrolytic cells are all connected in series. The aluminum busbars around and at the bottom of the cell are not only part of the conductive system of each cell itself, but also an indispensable part of the conductive circuit of the entire electrolytic series. Once any of the electrolytic cells is damaged, the huge energy generated by the melted aluminum busbar and the instantaneous voltage and current of the circuit breaker will destroy the column busbar and the facilities around the cell; if it cannot be repaired in a short time, and there are no other special short-circuit measures to quickly bridge the accident cell, the entire electrolytic series will be unable to resume power supply, facing a series of shutdowns, which will bring huge safety risks and economic losses to the company.

[0003] At present, manual inspection is usually used in the aluminum electrolysis production process. However, manual inspection is a regular routine inspection and cannot detect problems in time. Problems are usually discovered and dealt with only after an accident has occurred. This inspection method cannot fully and real-time guarantee the safety of modern large-scale aluminum electrolysis production processes. Summary of the invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a self-diagnosis and automatic interlocking protection system and method for short-circuit junctions of aluminum electrolysis. By collecting the voltage of a single slot and the accumulated voltage of multiple slots in groups, the edge data collector transmits the information to a remote control platform. The remote control platform makes a judgment through data comparison. If an abnormality is found, an alarm prompt and an interlocking protection execution signal are issued. The present invention can timely and effectively discover abnormal working conditions of short-circuit junctions of aluminum electrolysis busbar columns, thereby improving the stability and safety of aluminum electrolysis production operations.

[0005] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0006] A self-diagnosis and automatic interlocking protection system for short-circuit of aluminum electrolysis comprises a single-slot voltage collection and judgment terminal, a grouped multi-slot voltage accumulation collection and judgment terminal, an edge data collector, an industrial switch, and a remote control platform. The single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal respectively collect and judge the single-slot voltage and the grouped multi-slot voltage in real time and continuously. The single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal are provided with a voltage upper limit threshold. By comparing the single-slot voltage and the grouped multi-slot voltage with their respective voltage upper limit thresholds, corresponding switch signals are output. The edge data collector collects and judges the single-slot voltage, the grouped multi-slot voltage and the switch signals of the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal and transmits them to the remote control platform through the industrial switch. The remote control platform compares and detects the collected front-end comprehensive judgment data including the single-slot voltage, the grouped multi-slot voltage and the switch signals with the production data in the original power system. If the same abnormal trend exists, an alarm prompt and an interlocking protection execution signal are issued.

[0007] Furthermore, the single-cell voltage is the cell voltage of each aluminum electrolytic cell, and the grouped multi-cell voltage is based on N1 aluminum electrolytic cells as a group. Real-time continuous collection and judgment of the multi-cell accumulated cell voltages of the grouped cells are performed at the first and last ends of each group of aluminum electrolytic cells. Each group of aluminum electrolytic cells is equipped with an edge data collector, and N2 edge data collectors are connected as a group to an industrial switch in an electrolysis workshop. N3 industrial switches in the electrolysis workshops are connected to a power main control room aggregation switch, and the power main control room aggregation switch is connected to the remote control platform, wherein N1, N2, and N3 are all positive integers greater than or equal to 2.

[0008] Furthermore, the values ​​of N1, N2, and N3 are positive integers not less than 5.

[0009] Furthermore, the production data in the motive power system includes a series of voltage values, a series of current values ​​and switch quantity signals.

[0010] Furthermore, the remote control platform sends out an interlocking protection execution signal to enable the control system to start the original power system comprehensive self-relay protection control circuit, send out an execution signal to cut off the electrolysis series load to the power protection system, and perform a power-off operation on the electrolysis series electrolytic cells.

[0011] The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection method of the system comprises the following steps:

[0012] Step S01: Real-time continuous collection of single slot voltage and grouped multi-slot accumulated slot voltage and abnormal slot voltage judgment are performed through a single slot voltage collection and judgment terminal and a grouped multi-slot voltage accumulation collection and judgment terminal respectively;

[0013] Step S02: The edge data collector collects and determines the single-slot voltage, grouped multi-slot voltage and switch signal of the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal, and transmits them to the remote control platform step by step through the industrial switch to realize the transmission of the front-end comprehensive judgment data;

[0014] Step S03: The remote control platform reads the comprehensive judgment data from the front end, compares it with the production data in the prime mover system, and makes an overall judgment on the aluminum electrolysis power supply system. The control system controls the prime mover system's comprehensive self-relay protection control circuit to control the electrolysis workshop power supply system according to the judgment results.

[0015] Furthermore, the step S01 is specifically that the remote control platform controls the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal to respectively perform real-time and continuous collection of the voltages of the aluminum electrolysis single slot and the grouped multi-slot collection cable. The single-slot voltage collection and judgment terminal is provided with a judgment and analysis module, and the judgment and analysis module is provided with an upper limit threshold of the single-slot voltage. The judgment and analysis module of the single-slot voltage collection and judgment terminal compares the collected real-time single-slot voltage with the set upper limit threshold of the single-slot voltage, and outputs a corresponding switch signal; the grouped multi-slot voltage accumulation collection and judgment terminal is provided with a judgment and analysis module, and the judgment and analysis module is provided with an upper limit threshold of the multi-slot accumulated slot voltage of the grouped slots. The judgment and analysis module of the grouped multi-slot voltage accumulation collection and judgment terminal compares the collected real-time grouped multi-slot voltage with the set upper limit threshold of the multi-slot accumulated slot voltage, and outputs a corresponding switch signal.

[0016] Furthermore, the grouped multi-cell voltage accumulation collection is based on N1 aluminum electrolytic cells as a group, N1 is a positive integer greater than or equal to 2, and real-time continuous collection of multi-cell accumulated cell voltages of the grouped cells is performed at the first and last ends of each group of aluminum electrolytic cells.

[0017] Furthermore, the step S02 is specifically that the remote control platform controls the edge data collector to collect and judge the single-slot voltage, the multi-slot cumulative slot voltage of the grouped slots and the switch signal. When the single-slot voltage value and the multi-slot cumulative voltage value each reach the critical threshold, the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage cumulative collection and judgment terminal send a switch signal to the edge data collector. When both the single-slot voltage and the multi-slot cumulative slot voltage are abnormal, the edge data collector judges as true, and the edge data collector forms the collected single-slot voltage, the multi-slot cumulative slot voltage of the grouped slots and the switch signal into the front-end comprehensive judgment data and transmits it to the industrial switch; if only the single-slot voltage or only the multi-slot cumulative slot voltage is abnormal, the edge data collector judges as false and screens out the data.

[0018] Furthermore, the front-end comprehensive judgment data of step S03 includes the voltage value of a single slot, the accumulated voltage value of multiple slots, and the switch signal; the production data in the prime mover system includes a series of voltage values, a series of current values, and a switch signal. After the remote control platform receives the front-end comprehensive judgment data sent by the edge collector, the remote control platform performs a comparison test with the production data in the prime mover system. When the production data in the prime mover system matches the characteristic trend of the front-end comprehensive judgment data, the remote control platform issues an alarm prompt and an interlocking protection execution signal.

[0019] The beneficial effects of the present invention are:

[0020] (1) The present invention connects the front-end comprehensive judgment data of the aluminum electrolysis workshop with the remote control platform in the power plant through Ethernet and industrial switches. The remote control platform judges the system as a whole according to the production data in the aluminum electrolysis workshop and the original power system. The comprehensive automation system and the relay protection control circuit control the power supply system of the aluminum electrolysis workshop according to the judgment results, realizing the real-time perception and automatic remote linkage of the production system, control system and power supply system. This integrated structure system fully realizes the sharing of real-time data, makes up for the blind spots of traditional manual inspections, saves a lot of human resources, and can effectively and timely discover production anomalies, greatly improving the stability and safety of aluminum electrolysis production and operation; the system and method of the present invention have high working efficiency, intelligence, convenience and strong practicality.

[0021] (2) The present invention automatically and accurately judges and performs interlocking protection measures in a timely and accurate manner at the early stage of abnormal conditions in the aluminum electrolysis process based on the collected real-time single-slot voltage and multi-slot cumulative slot voltage changes, and records key handling data information in a timely and effective manner, thereby eliminating abnormal accidents at the aluminum electrolysis short-circuit junction in the early stage, greatly reducing the impact of the accident on series production and the personnel and economic losses caused by the accident.

[0022] (3) In the system, a single-slot voltage collection and judgment terminal is set to monitor the voltage of the aluminum electrolytic cell, a grouped multi-slot voltage accumulation collection and judgment terminal is set to monitor the multi-slot accumulated voltage, and an edge data collector is set to collect the single-slot and grouped slot voltages and the switch signal of the collection and judgment terminal. If both the single-slot voltage and the grouped slot voltage are abnormal, the edge data collector will upload the data to the remote control platform. If only the collected single-slot or only the grouped multi-slot voltage is abnormal, the data will be filtered out; on the remote control platform side, after receiving the data from the edge data collector, the remote control platform will refer to the production data in the prime mover system. If the corresponding voltage, current, and switch signal in the prime mover system are abnormal at the same time, the remote control platform will execute alarms and series power-off protection operations to improve the accuracy of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the framework of the aluminum electrolysis abnormal automatic interlocking protection control system of the present invention;

[0024] Figure 2 It is a schematic diagram of the framework of the aluminum electrolysis abnormal automatic interlocking protection control system of the present invention;

[0025] Figure 3 It is a schematic diagram of single slot voltage monitoring and multi-slot cumulative slot voltage monitoring mode;

[0026] Figure 4 This is a flow chart of the automatic interlocking protection method for abnormal aluminum electrolysis;

[0027] Figure 5 This is the electrical control diagram for automatic interlocking protection of aluminum electrolysis abnormalities. DETAILED DESCRIPTION

[0028] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0029] like Figure 1-2 As shown, the present invention is a self-diagnosis and automatic interlocking protection system and method for short-circuit of aluminum electrolysis. The self-diagnosis and automatic interlocking protection system for short-circuit of aluminum electrolysis of the present invention comprises a single-slot voltage collection and judgment terminal, a grouped multi-slot voltage accumulation collection and judgment terminal, an edge data collector, an industrial switch, and a remote control platform. Cables are laid independently in each aluminum electrolysis cell, and a certain number of aluminum electrolysis cells are grouped into a group, generally 5 in a group, and cables are laid at the first and last ends of each group of aluminum electrolysis cells, such as Figure 3 , 5 As shown, the voltage on the cable is collected using the existing voltage collection equipment, and then the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal perform real-time and continuous collection of the single-slot voltage and the grouped multi-slot accumulated slot voltage. The single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal are provided with a voltage upper limit threshold, and the corresponding switch signal is output by comparing the single-slot voltage and the grouped multi-slot voltage with the corresponding voltage upper limit threshold. The edge data collector collects and judges the single-slot voltage, grouped multi-slot voltage and switch signals of the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal. When the single-slot voltage value and the multi-slot accumulated voltage value each reach the critical threshold, the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal send a switch signal to the edge data collector. When both the single-slot voltage and the multi-slot accumulated voltage are abnormal, the edge data collector judges as true. The edge data collector forms the single-slot voltage, the grouped multi-slot voltage and the switch signal into the front-end comprehensive judgment data and transmits it to the industrial switch. If only the single-slot voltage or only the multi-slot accumulated voltage is abnormal, the edge data collector judges as false and screens out the data, which can improve the accuracy of the system.

[0030] Five groups of edge data collectors are connected to an industrial switch in an electrolysis workshop, and several industrial switches in the electrolysis workshops are connected to a power control room aggregation switch. The power control room aggregation switch obtains the production data in the original power system and uploads it to the remote control platform. The remote control platform compares and detects the collected front-end comprehensive judgment data including single slot voltage, grouped slot voltage and switch signal with the production data in the original power system. If there is an abnormality, an alarm prompt and an interlocking protection execution signal are issued. Specifically, after the remote control platform receives the front-end comprehensive judgment data sent by the edge collector, the remote control platform compares and detects the production data in the original power system. When the production data in the original power system matches the characteristic value of the front-end comprehensive judgment data, that is, the corresponding voltage, current value, and switch signal in the original power system also have the same trend characteristics of the voltage and switch signal uploaded by the edge data collector, the remote control platform considers it to be true, and issues an alarm prompt and an interlocking protection execution signal, so that the control system starts the original power system relay protection control circuit, sends a group load cut-off execution signal to the power protection system, and performs a power outage operation on the electrolytic cell. If the corresponding voltage, current value, and switch signal in the original power system do not match the trend characteristics of the voltage and switch signal uploaded by the edge data collector, the remote control platform will consider it to be false, and will not issue an alarm prompt or interlocking protection execution signal, but only prompt and save the data.

[0031] The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection method of the present invention comprises the following steps:

[0032] Step S01: Real-time continuous collection of single-slot voltage and grouped multi-slot voltage and abnormality judgment of slot voltage are performed through a single-slot voltage collection and judgment terminal and a grouped multi-slot voltage accumulation collection and judgment terminal respectively.

[0033] Specifically, the step S01 is specifically that the remote control platform controls the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal to respectively perform real-time and continuous collection of the voltages of the aluminum electrolysis single slot and the grouped multi-slot collection cable. The single-slot voltage collection and judgment terminal is provided with a judgment and analysis module, and the judgment and analysis module is provided with an upper limit threshold of the single-slot voltage. The judgment and analysis module of the single-slot voltage collection and judgment terminal compares the collected real-time single-slot voltage with the set upper limit threshold of the single-slot voltage, and outputs a corresponding switch signal; the grouped multi-slot voltage accumulation collection and judgment terminal is provided with a judgment and analysis module, and the judgment and analysis module is provided with an upper limit threshold of the multi-slot accumulated slot voltage of the grouped slots. The judgment and analysis module of the grouped multi-slot voltage accumulation collection and judgment terminal compares the collected real-time grouped multi-slot voltage with the set upper limit threshold of the multi-slot accumulated slot voltage, and outputs a corresponding switch signal.

[0034] Step S02: The edge data collector collects and judges the single-slot voltage, grouped multi-slot voltage and switch signal of the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal, and transmits them to the remote control platform step by step through the industrial switch to realize the transmission of the front-end comprehensive judgment data.

[0035] Specifically, the remote control platform controls the edge data collector to collect and judge the single-slot voltage, the multi-slot cumulative slot voltage of the grouped slots and the switch signal. When the single-slot voltage value and the multi-slot cumulative voltage value each reach the critical threshold, the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage cumulative collection and judgment terminal send a switch signal to the edge data collector. When both the single-slot voltage and the multi-slot cumulative slot voltage are abnormal, the edge data collector judges as true. The edge data collector forms the collected single-slot voltage, the multi-slot cumulative slot voltage of the grouped slots and the switch signal into the front-end comprehensive judgment data and transmits it to the industrial switch. If only the single-slot voltage or only the multi-slot cumulative slot voltage is abnormal, the edge data collector judges it as false, screens out the data, and improves the accuracy of the system.

[0036] Step S03: The remote control platform reads the comprehensive judgment data from the front end, compares it with the production data in the prime mover system, and makes an overall assessment of the aluminum electrolysis power supply system. The control system controls the prime mover system relay protection control circuit to control the power supply system of the electrolysis workshop according to the assessment results.

[0037] Specifically, the front-end comprehensive judgment data includes single-slot voltage value, multi-slot cumulative voltage value, and switch signal; the production data in the prime mover system includes series voltage value, series current value, and switch signal. After the remote control platform receives the front-end comprehensive judgment data sent by the edge collector, the remote control platform compares and detects the production data in the prime mover system. When the production data in the prime mover system matches the characteristic value of the front-end comprehensive judgment data, the remote control platform issues an alarm prompt and interlocking protection execution signal. Figure 4As shown, further, after the remote control platform receives the front-end comprehensive judgment data sent by the edge collector, the remote control platform performs a comparison test with the production data in the prime mover system. When the production data in the prime mover system matches the characteristic value of the front-end comprehensive judgment data, that is, the corresponding voltage, current value, switch quantity signal in the prime mover system and the voltage and switch quantity signal uploaded by the edge data collector have corresponding trend characteristics, the remote control platform considers it to be true, and issues an alarm prompt and interlocking protection execution signal, so that the control system starts the relay protection control circuit of the prime mover system, and sends a cut-off group load execution signal to the power protection system to perform a power outage operation on the electrolytic cell. If the corresponding voltage, current value, switch quantity signal in the prime mover system does not match the trend characteristics of the voltage and switch quantity signal uploaded by the edge data collector, the remote control platform considers it to be false, and does not issue an alarm prompt and interlocking protection execution signal, and prompts and saves the data.

[0038] The self-diagnosis and automatic interlocking protection system and method of aluminum electrolysis short circuit of the present invention is an integrated structural system, which realizes the sharing of real-time data, makes up for the blind spots of traditional manual inspection, saves a lot of human resources, effectively and timely discovers production abnormalities, and greatly improves the stability and safety of aluminum electrolysis production operation; the system and method of the present invention have high working efficiency, intelligence, convenience and strong practicality. The present invention can timely and accurately automatically judge and interlock protection treatment at the early stage of abnormal state of short circuit in the aluminum electrolysis process, timely and effectively record key treatment data information, eliminate abnormal accidents of aluminum electrolysis in the early stage, and greatly reduce the impact of accidents on series production and the personnel and economic losses caused by accidents.

[0039] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A self-diagnosis and automatic interlocking protection system for short circuit of aluminum electrolysis, characterized by: It includes a single-slot voltage collection and judgment terminal, a grouped multi-slot voltage accumulation collection and judgment terminal, an edge data collector, an industrial switch, and a remote control platform. The single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal respectively collect and judge the single-slot voltage and the grouped multi-slot voltage in real time and continuously. The single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal are provided with a voltage upper limit threshold. By comparing the single-slot voltage and the grouped multi-slot voltage with their respective voltage upper limit thresholds, corresponding switch signals are output. The edge data collector collects and judges the single-slot voltage, the grouped multi-slot voltage and the switch signal of the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal through the industrial switch and transmits them to the remote control platform. The remote control platform compares and detects the collected front-end comprehensive judgment data including the single-slot voltage, the grouped slot voltage and the switch signal with the production data in the original power system. If there are abnormal characteristics with the same trend, an alarm prompt and an interlocking protection execution signal are issued.

2. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection system according to claim 1 is characterized by: The single-cell voltage is the cell voltage of each aluminum electrolytic cell, and the grouped multi-cell voltage is based on N1 aluminum electrolytic cells as a group. The multi-cell accumulated cell voltage of the grouped cells is collected and judged in real time and continuously at the first and last ends of each group of aluminum electrolytic cells. Each group of aluminum electrolytic cells is equipped with an edge data collector, and N2 edge data collectors are connected as a group to an industrial switch in an electrolysis workshop. N3 industrial switches in the electrolysis workshops are connected to a power control room aggregation switch, and the power control room aggregation switch is connected to the remote control platform, wherein N1, N2, and N3 are all positive integers greater than or equal to 2.

3. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection system according to claim 2 is characterized by: The values ​​of N1, N2, and N3 are positive integers not less than 5.

4. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection system according to claim 1 is characterized by: The production data in the prime mover system includes a series of voltage values, a series of current values ​​and switch quantity signals.

5. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection system according to claim 1 is characterized by: The remote control platform sends out a chain protection execution signal to enable the original power system integrated self-system to start the relay protection control circuit, and sends an execution signal to cut off the electrolysis series load to the power protection system to perform a power outage operation on the electrolysis series electrolytic cells.

6. A self-diagnosis and automatic interlocking protection method for short-circuit junction of aluminum electrolysis using the system described in any one of claims 1 to 5, characterized in that: The steps include: Step S01: Real-time continuous collection of single slot voltage and grouped multi-slot voltage and abnormal slot voltage judgment are performed through a single slot voltage collection and judgment terminal and a grouped multi-slot voltage accumulation collection and judgment terminal respectively; Step S02: The edge data collector collects and judges the single-slot voltage, grouped slot voltage and switch signal of the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal, and transmits them to the remote control platform step by step through the industrial switch to realize the transmission of the front-end comprehensive judgment data; Step S03: The remote control platform reads the comprehensive judgment data from the front end, compares it with the production data in the prime mover system, and makes an overall judgment on the aluminum electrolysis power supply system. The control system controls the prime mover system's comprehensive self-relay protection control circuit to control the electrolysis workshop power supply system according to the judgment results.

7. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection method according to claim 6 is characterized in that: The step S01 is specifically that the remote control platform controls the single-slot voltage collection and judgment terminal and the grouped multi-slot voltage accumulation collection and judgment terminal to respectively collect the voltages of the aluminum electrolysis single slot and the grouped multi-slot voltage accumulation collection and judgment terminal in real time and continuously. The single-slot voltage collection and judgment terminal is provided with a judgment and analysis module, and the judgment and analysis module is provided with an upper limit threshold of the single-slot voltage. The judgment and analysis module of the single-slot voltage collection and judgment terminal compares the collected real-time single-slot voltage with the set upper limit threshold of the single-slot voltage, and outputs a corresponding switch signal; the grouped multi-slot voltage accumulation collection and judgment terminal is provided with a judgment and analysis module, and the judgment and analysis module is provided with an upper limit threshold of the multi-slot accumulated slot voltage of the grouped slots. The judgment and analysis module of the grouped multi-slot voltage accumulation collection and judgment terminal compares the collected real-time grouped multi-slot accumulated slot voltage with the set upper limit threshold of the multi-slot accumulated slot voltage, and outputs a corresponding switch signal.

8. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection method according to claim 7 is characterized in that: The grouped multi-tank cumulative voltage collection is based on N1 aluminum electrolytic cells as a group, N1 is a positive integer greater than or equal to 2, and real-time continuous collection of multi-tank cumulative tank voltages of the grouped tanks is performed at the first and last ends of each group of aluminum electrolytic cells.

9. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection method according to claim 6, characterized in that: The step S02 is specifically that the remote control platform controls the edge data collector to collect and judge the single-slot voltage, the accumulated slot voltage of multiple slots in the grouped slots and the switch signal. When the single-slot voltage value and the accumulated slot voltage value of multiple slots reach the critical threshold respectively, the single-slot voltage collection and judgment terminal and the grouped slot voltage collection and judgment terminal send a switch signal to the edge data collector. When both the single-slot voltage and the accumulated slot voltage of multiple slots are abnormal, the edge data collector judges as true, and the edge data collector forms the collected single-slot voltage, the accumulated slot voltage of multiple slots in the grouped slots and the switch signal into the front-end comprehensive judgment data and transmits it to the industrial switch. If only the single-slot voltage or only the accumulated slot voltage of multiple slots is abnormal, the edge data collector judges as false and screens out the data.

10. The aluminum electrolysis short circuit self-diagnosis and automatic interlocking protection method according to claim 9, characterized in that: The front-end comprehensive judgment data in step S03 includes the single-slot voltage value, the multi-slot accumulated voltage value, and the switch signal; the production data in the prime mover system includes a series of voltage values, a series of current values, and a switch signal. After the remote control platform receives the front-end comprehensive judgment data sent by the edge collector, the remote control platform compares and detects the production data in the prime mover system. When the production data in the prime mover system matches the characteristic trend of the front-end comprehensive judgment data, the remote control platform issues an alarm prompt and an interlocking protection execution signal.

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