阅读说明：本技术 一种铝电解系列的通廊母线快速短接系统及方法 (Rapid corridor bus short-circuit system and method for aluminum electrolysis series ) 是由 赵忠扬 于 2021-08-31 设计创作，主要内容包括：本发明提出的一种铝电解系列的通廊母线快速短接系统及方法,所述系统包括：通廊母线软连接,用于控制通廊母线的短接或断开；多级消能装置并联在通廊母线的断开口上,用于消除电解槽产生的反冲电能,实时监测通廊母线断开口和消能导体的电压值,并上传至控制终端；控制终端,用于通过消能导体两端的电压值判断电解槽产生的反冲电能是否达到预设的安全范围,根据判断结果控制通廊母线软连接并结合整流车间断供电操作完成通廊母线的快速短接。本发明能够在短时间内把叠加在系列母线上的存储电荷造成的高压反冲击电流降到安全的范围内,使其不影响通廊母线在特定时间内进行短路操作,消除了因系列断电后需长时间等待而造成的严重后果。(The invention provides a rapid short circuit system and a rapid short circuit method for a corridor bus of an aluminum electrolysis series, wherein the system comprises: the corridor bus flexible connection is used for controlling short circuit or disconnection of the corridor bus; the multistage energy dissipation device is connected in parallel to the broken opening of the corridor bus and used for eliminating recoil electric energy generated by the electrolytic cell, monitoring the voltage values of the broken opening of the corridor bus and the energy dissipation conductor in real time and uploading the voltage values to the control terminal; and the control terminal is used for judging whether the back-flushing electric energy generated by the electrolytic cell reaches a preset safety range through the voltage values at the two ends of the energy dissipation conductor, controlling the flexible connection of the corridor bus according to the judgment result and finishing the quick short circuit of the corridor bus by combining the intermittent power supply operation of the rectifier car. The invention can reduce the high-voltage anti-impact current caused by the stored charges superposed on the serial bus to a safe range in a short time, so that the short-circuit operation of the corridor bus in a specific time is not influenced, and the serious consequence caused by long-time waiting after serial power failure is eliminated.)

1. A rapid short circuit system for corridor buses of an aluminum electrolysis series is characterized in that the aluminum electrolysis series is powered by a series bus series connection electrolytic cell led out from a rectification workshop, corridor buses connected with the series buses are arranged in a working corridor of the aluminum electrolysis series, and each corridor bus is provided with a break opening; characterized in that the system comprises: the corridor bus flexible connection, the energy dissipation device, the control terminal and the power supply switch; the control terminal is in signal connection with the energy dissipation device;

the corridor bus flexible connection is in compression joint on a broken opening of the corridor bus through a bolt, and an insulating fork plate is arranged on the corridor bus flexible connection and used for controlling short circuit or disconnection of the corridor bus;

the energy dissipation device is connected in parallel to the broken opening of the corridor bus, and an energy dissipation conductor, a step switch and a voltage acquisition unit are arranged in the energy dissipation device; the energy dissipation conductor is used for eliminating recoil electric energy generated by the electrolytic cell, the step switch is used for intervention and withdrawal of the energy dissipation conductor, and the voltage acquisition unit is used for monitoring the voltage values of the broken opening of the corridor bus and the energy dissipation conductor in real time and uploading the voltage values to the control terminal;

the power supply switch is arranged in the rectifying workshop and is used for controlling the connection or disconnection of the serial buses;

and the control terminal is used for judging whether the back-flushing electric energy generated by the electrolytic cell reaches a preset safety range or not through the broken opening of the corridor bus and the voltage value of the energy dissipation conductor, and displaying short-circuit prompt information after the back-flushing electric energy generated by the electrolytic cell reaches the preset safety range.

2. The rapid short-circuit system for vestibule bus of aluminum electrolysis series as claimed in claim 1, wherein the energy dissipater is further provided with an adjusting unit for adjusting the resistance of the energy dissipation conductor.

3. The rapid short-circuit system for the corridor bus of the aluminum electrolysis series as recited in claim 1, wherein the energy dissipater is connected in parallel to the broken opening of the corridor bus by a bus clamp, the input end and the output end of the energy dissipater are both in flexible connection, and the bus clamp is used for crimping the flexible connection to the broken opening of the corridor bus.

4. The vestibule bus quick short system of aluminum electrolysis series according to claim 3, wherein the bus bar clamp comprises: u type frame and bolt, the one end of U type frame is equipped with the screw, and the other end of U type frame is equipped with the stopper that matches with the bolt tip, and the bolt passes through screw and U type frame threaded connection.

5. The rapid corridor bus short-circuit system for the aluminum electrolysis series as recited in claim 1, wherein the control terminal is connected with the energy dissipater through a cable in a signal manner, and the straight line distance between the control terminal and the energy dissipater is a preset safety distance.

6. A rapid short circuit method for a corridor bus of an aluminum electrolysis series is characterized by comprising the following steps:

s1: determining a corridor bus to be short-circuited according to an electrolytic cell needing shutdown;

s2: controlling the power failure of the rectifying workshop through a power supply switch to enable the serial buses to disconnect a direct-current power supply;

s3: the energy dissipation device is connected in parallel to the break opening of the corridor bus, after the parallel connection is completed, the voltage value of the break opening of the corridor bus is sent to the control terminal through the voltage acquisition unit, and the control terminal sends a signal to the step switch according to the voltage value to control the intervention of the energy dissipation conductor;

s4: reading the voltage value of the energy dissipation conductor through a control terminal, judging whether the back-flushing electric energy generated by the electrolytic bath reaches a preset safety range, if so, displaying energy dissipation completion prompt information, and disconnecting and transferring the energy dissipation device from the corridor bus;

s5: separating the insulating fork plate from the corridor bus in a flexible connection manner, and short-circuiting the corridor bus to be short-circuited;

s6: the power supply switch is used for controlling the rectifying workshop to supply power to the serial buses, so that the aluminum electrolysis series can be recovered to be produced.

7. The method for quickly shorting vestibule buses of an aluminum electrolysis series according to claim 6, wherein the step S3 is specifically as follows:

connecting the energy dissipater in parallel on the broken opening of the corridor bus;

sending the voltage value of the disconnection port of the corridor bus to a control terminal through a voltage acquisition unit;

the control terminal calculates the recoil electric energy of the corridor bus according to the voltage value of the broken opening of the corridor bus;

the control terminal adjusts the resistance value of the energy dissipation conductor of the energy dissipation device according to the calculated recoil electric energy;

and the voltage values of the broken opening of the corridor bus and the energy dissipation conductor are sent to the control terminal through the voltage acquisition unit.

8. The method for quickly shorting vestibule buses of an aluminum electrolysis series according to claim 6, wherein the step S4 is specifically as follows:

reading the voltage values of the broken opening of the corridor bus and the energy dissipation conductor through the control terminal, and if the voltage value of the current energy dissipation conductor is less than or equal to a preset safe voltage, the recoil electric energy generated by the electrolytic cell reaches a preset safe range; at this time, the energy dissipater is disconnected from the gallery bus.

Technical Field

The invention relates to the technical field of electrolytic aluminum production, in particular to a rapid short circuit system and a rapid short circuit method for a vestibule bus of an aluminum electrolysis series.

Background

With the rapid development of science and technology, the new technology is rapidly changed in various fields, the industrial production architecture is continuously pushed out to be new, the production scale, the production efficiency and the productivity are synchronously improved, the innovation and the transformation of the non-ferrous metal industry are more rapid, the aluminum electrolysis series which is the most important component of the non-ferrous metal industry is not exceptional, the series capacity is doubled while the production efficiency of the aluminum electrolysis series is improved in recent years, as shown in figure 1, direct current required by the whole aluminum electrolysis series in the newly built aluminum electrolysis series usually comes from the same rectification workshop at present, a series bus connected with an electrolytic cell in series is led out from the rectification workshop for power supply, and as the number of the series cells is large, a production line with large distance span is formed after series connection, so that great inconvenience is brought to the material inlet and outlet, series maintenance, daily management and control of the electrolytic cell and the like during production and operation, therefore a complete aluminium electroloysis series can be divided into a plurality of working section in all, constitute a set ofly according to two rows of corresponding two working sections, set up a work vestibule (be used for business turn over material etc.) between adjacent two sets of, all be equipped with the vestibule generating line of being connected with series generating line below the vestibule, every vestibule generating line all is equipped with disconnected opening, can artificially control every vestibule generating line short circuit or disconnection through the soft connection of aluminium as required, be in between adjacent two sets of working sections because of the vestibule generating line, adjacent two sets of working sections have just formed parallel state through the cross-over connection generating line. The production stop or the production put into operation of the downstream working group can be conveniently and flexibly controlled by controlling the short circuit and the open circuit of the corridor bus, so that when a certain working section breaks down, the production stop or the production put into operation is needed for maintenance, production limit and the like, the corridor bus can be controlled to control the production state, and the corridor bus can form a loop with the upstream series working section after being communicated, so that the normal production of other residual working groups (sections) can not be influenced when the downstream working group (section) is stopped, the flexible sectional operation of the aluminum electrolysis series in the production process can be realized as required, the influence on the normal production of the whole aluminum electrolysis series caused by various problems is avoided, the current efficiency is improved, various adverse factors under special conditions are reduced to the minimum, and controllable means are increased.

However, after the down-stream work group is controlled to stop production by controlling the short circuit of the corridor bus, the electrolysis bath after power failure can generate energy storage effect and electrochemical primary battery effect in the process of electrolyzing aluminum, because the capacity of the electrolysis bath is huge, the counter-impact energy provided by each electrolysis bath can reach more than hundreds of kilowatts, the electrolysis bath after power failure is equivalent to a low-voltage large-capacity storage battery full of electric quantity, the whole series of the electrolysis baths is provided with hundreds of electrolysis baths, all the electrolysis baths in the series are connected in series through the series bus, therefore, the stored energy on each electrolysis bath is in a superposed state on the voltage, and the current is in a series state, thus forming an energy source with high voltage and large current.

Because the corridor bus is connected with the serial buses, the corridor bus is connected with the huge energy source, short-circuit operation cannot be carried out at all under the electrified state, if the stored energy is not eliminated in time, relevant operation is carried out blindly, and the danger is high. If in order to avoid appearing the anti-impulse current and causing the dangerous accident, let the energy natural consumption of storage carry out the short circuit operation again, then need for a long time not have danger when can weaken the operation totally, nevertheless outage time overlength can make the electrolysis trough lose the temperature, make the interior electrolyte cooling of inslot sink and aluminium liquid mix and be solidification or semi-solid state, cause dead groove phenomenon, just can only be all clean up the inside material of electrolysis trough if dead groove phenomenon appears, then new material of mating formation again, just can let aluminium electroloysis series restart, so not only influence the productivity, consume manpower and materials and still can cause huge economic loss for the enterprise because of this.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a rapid short circuit system and a rapid short circuit method for a vestibule bus of an aluminum electrolysis series, which can reduce high-voltage reverse impact current caused by stored charges superposed on the series bus to a safe range in a short time, so that the short circuit operation of the vestibule bus in a specific time is not influenced, the serious consequences caused by long-time waiting after series power failure are eliminated, and the risk of great economic loss caused by enterprises is avoided.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a rapid short circuit system for corridor buses of an aluminum electrolysis series is characterized in that the aluminum electrolysis series is powered by a series bus series connection electrolytic cell led out from a rectification workshop, corridor buses connected with the series buses are arranged in a working corridor of the aluminum electrolysis series, and each corridor bus is provided with a break opening; the system comprises: the corridor bus flexible connection, the energy dissipation device, the control terminal and the power supply switch; the control terminal is respectively in signal connection with each group of energy dissipaters; the corridor bus flexible connection is arranged on a broken opening of the corridor bus, and an insulating fork plate is arranged on the corridor bus flexible connection and used for controlling short circuit or disconnection of the corridor bus; the energy dissipation device is connected in parallel to the broken opening of the corridor bus, and an energy dissipation conductor, a step switch and a voltage acquisition unit are arranged in the energy dissipation device; the energy dissipation conductor is used for eliminating recoil electric energy generated by the electrolytic cell, the step switch is used for intervention and withdrawal of the energy dissipation conductor, and the voltage acquisition unit is used for monitoring the voltage values of the broken opening of the corridor bus and the energy dissipation conductor in real time and uploading the voltage values to the control terminal; the power supply switch is arranged in the rectifying workshop and is used for controlling the connection or disconnection of the serial buses; and the control terminal is used for judging whether the back-flushing electric energy generated by the electrolytic cell reaches a preset safety range or not through the broken opening of the corridor bus and the voltage value of the energy dissipation conductor, and displaying short-circuit prompt information after the back-flushing electric energy generated by the electrolytic cell reaches the preset safety range.

Based on the structure, the control terminal automatically judges the magnitude of the recoil voltage to control the corresponding energy dissipater to quickly eliminate and transfer huge recoil electric energy, and makes a corresponding prompt through the panel of the control terminal, when the recoil energy is weakened to a certain degree (namely, the recoil energy is reduced to a safety range), the control terminal can prompt a worker to automatically carry out short circuit operation on the bus of the corridor, so that the short circuit operation of the bus of the corridor can be completed in a short time, and the condition that the whole series cannot be restarted due to long-time waiting is successfully avoided.

Furthermore, an adjusting unit is arranged in the energy dissipation device and used for adjusting the resistance value of the energy dissipation conductor.

Furthermore, the energy dissipation device is connected in parallel to the disconnection of the corridor bus through a bus clamp, the input end and the output end of the energy dissipation device are in flexible connection, and the bus clamp is used for crimping the flexible connection to the broken opening of the corridor bus.

Further, the bus bar clamp includes: u type frame and bolt, the one end of U type frame is equipped with the screw, and the other end of U type frame is equipped with the stopper that matches with the bolt tip, and the bolt passes through screw and U type frame threaded connection.

Furthermore, the control terminal is in signal connection with the energy dissipater through a cable, and the linear distance between the control terminal and the energy dissipater is a preset safety distance.

Correspondingly, the invention also discloses a rapid short circuit method for the corridor bus of the aluminum electrolysis series, which comprises the following steps:

s1: determining a corridor bus to be short-circuited according to an electrolytic cell needing shutdown;

s2: controlling the power failure of the rectifying workshop through a power supply switch to enable the serial buses to disconnect a direct-current power supply;

s3: the energy dissipation device is connected in parallel to the break opening of the corridor bus, after the parallel connection is completed, the voltage value of the break opening of the corridor bus is sent to the control terminal through the voltage acquisition unit, and the control terminal sends a signal to the step switch according to the voltage value to control the intervention of the energy dissipation conductor;

s4: reading the voltage value of the energy dissipation conductor through a control terminal, judging whether the back-flushing electric energy generated by the electrolytic bath reaches a preset safety range, if so, displaying energy dissipation completion prompt information, and disconnecting and transferring the energy dissipation device from the corridor bus;

s5: separating the insulating fork plate from the corridor bus in a flexible connection manner, and short-circuiting the corridor bus to be short-circuited;

s6: the power supply switch is used for controlling the rectifying workshop to supply power to the serial buses, so that the aluminum electrolysis series can be recovered to be produced.

Further, the step S3 specifically includes:

connecting the energy dissipater in parallel on the broken opening of the corridor bus;

sending the voltage value of the disconnection port of the corridor bus to a control terminal through a voltage acquisition unit;

the control terminal calculates the recoil electric energy of the corridor bus according to the voltage value of the broken opening of the corridor bus;

the control terminal adjusts the resistance value of the energy dissipation conductor of the energy dissipation device according to the calculated recoil electric energy;

and the voltage values of the broken opening of the corridor bus and the energy dissipation conductor are sent to the control terminal through the voltage acquisition unit.

Further, the step S4 specifically includes:

reading the voltage values of the broken opening of the corridor bus and the energy dissipation conductor through the control terminal, and if the voltage value of the current energy dissipation conductor is less than or equal to a preset safe voltage, the recoil electric energy generated by the electrolytic cell reaches a preset safe range; at this time, the dissipater is disconnected from the gallery bus and transferred.

Compared with the prior art, the invention has the beneficial effects that:

1. the control terminal is matched with the energy dissipater connected in parallel to the corridor bus disconnection port, so that high-voltage reverse impact current caused by stored charges superposed on the series buses can be reduced to a safe range in a short time, short circuit of the corridor buses in a specific time is not affected, serious consequences caused by long-time waiting after series power failure are eliminated, and the risk of great economic loss caused by enterprises is avoided.

2. The energy dissipater can automatically adjust internal resistance, realizes multi-stage automatic energy dissipation, can be safely used on a corridor bus at any position, and cannot quickly finish energy dissipation, transfer or burn out equipment due to different recoil parameters, so that the utilization rate of the equipment is effectively improved, and the use cost of the equipment is greatly reduced for enterprises.

3. The intelligent control of the system is realized through the control terminal, the voltage of the energy dissipation conductor can be automatically detected, the energy dissipation is controlled in a grading mode through scientific calculation, the recoil energy is gradually dissipated and transferred, the whole control process is automatically completed safely, reliably and quickly, the whole operation process does not need manual intervention, and the intelligent control system has accurate parameter prompt, process prompt, safety warning prompt and the like.

Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of the structure of an aluminum electrolysis series in the prior art of the present invention;

FIG. 2 is a schematic diagram of the structure of the present invention;

FIG. 3 is a control schematic of the present invention;

FIG. 4 is a schematic structural view of the bus bar clamp of the present invention;

FIG. 5 is a flow chart of the method of the present invention.

In the figure, 1 is a rectification workshop; 2, a working gallery; 3 is a series bus; 4 is a vestibule bus; 5 is a working section; 6, flexible connection of a corridor bus; 7 is an energy dissipation device; 8 is a control terminal; 9 is a power supply switch; 10 is a U-shaped frame; 11 is a bolt; 12 is a limiting block; 71 is an energy dissipation conductor; 72 is a voltage acquisition unit; 73 is an adjusting unit; 74 is a step switch.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

The first embodiment is as follows:

this embodiment discloses a quick short circuit system of vestibule generating line of aluminium electroloysis series, this system is based on the aluminium electroloysis series layout mode among the prior art, as shown in figure 1, the working section 5 that the 3 series connection electrolysis cell of series generating line that aluminium electroloysis series were drawn forth through rectification workshop 1 supplies power, is equipped with the vestibule generating line 4 of being connected with series generating line 3 in the work vestibule 2 of aluminium electroloysis series, and every vestibule generating line 4 all is equipped with disconnected opening.

As shown in fig. 2 and 3, the present system includes: the corridor bus flexible connection device comprises a corridor bus flexible connection 6, an energy dissipation device 7, a control terminal 8 and a power supply switch 9; the control terminal 8 is respectively connected with each group of energy dissipaters 7 through signals.

Vestibule bus bar flexible connection 6 is equipped with insulating fork board on vestibule bus bar flexible connection 6 through the bolt crimping on the disconnected opening of vestibule bus bar 4 for control vestibule bus bar 4's short circuit or disconnection.

The energy dissipation device 7 is connected in parallel on the broken opening of the corridor bus 4, and an energy dissipation conductor 71, a voltage acquisition unit 72, an adjustment unit 73 and a step switch 74 are arranged in the energy dissipation device 7; the energy dissipation conductor 71 is used for eliminating the recoil electric energy generated by the electrolytic cell; the voltage acquisition unit 72 is used for monitoring the voltage values of the broken opening of the corridor bus and the energy dissipation conductor 71 in real time and uploading the voltage values to the control terminal 8; the adjusting unit 73 is used for adjusting the resistance value of the energy dissipation conductor 71; the step switch 74 is used for insertion and withdrawal of the energy dissipating conductor 71.

The power supply switch 8 is provided in the rectifying shop 1, and is used for controlling the conduction or disconnection of the series bus 3.

And the control terminal 9 is used for judging whether the backflushing electric energy generated by the electrolytic cell reaches a preset safety range or not through the broken opening of the corridor bus and the voltage values at the two ends of the energy dissipation conductor 71, displaying short circuit prompt information after the backflushing electric energy generated by the electrolytic cell reaches the preset safety range, and prompting a worker to separate the insulating fork plate from the corridor bus flexible connection 6 to complete the short circuit of the corridor bus 4.

Wherein, energy dissipater 7 connects in parallel on vestibule bus bar flexible connection 6 through the generating line fixture, and energy dissipater 7's input and output all adopt the flexible connection, and the generating line fixture is used for crimping the flexible connection to on the disconnected opening of vestibule generating line 4. As shown in fig. 4, the bus bar fixture includes: u type frame 10 and bolt 11, the one end of U type frame 10 is equipped with the screw, and the other end of U type frame 10 is equipped with stopper 12 with bolt tip matching, and bolt 12 passes through screw and U type frame 10 threaded connection.

In the present system, in order to ensure safety, the control terminal 8 is in signal connection with the energy dissipaters 7 through cables, and the control terminal 8 has a safety distance from the energy dissipaters 7, which is usually greater than 10 meters.

When the energy dissipation device is used, the control terminal automatically judges the magnitude of the recoil voltage and the current to control energy dissipation conduction to quickly eliminate and transfer huge recoil electric energy, and makes a corresponding prompt through a panel on the control terminal, when the recoil energy is weakened to a certain degree (namely, the recoil energy is reduced to a safe range), the control terminal can prompt a worker to carry out corridor bus short circuit control, and after the worker completes the corridor bus short circuit, the energy dissipation device can be safely evacuated, so that the corridor bus short circuit operation can be completed in a short time, and the condition that the whole series cannot be restarted due to long-time waiting is successfully avoided.

Example two:

correspondingly, as shown in fig. 5, the invention also discloses a rapid short circuit method for the corridor bus of the aluminum electrolysis series, which comprises the following steps:

s1: and determining the corridor bus to be short-circuited according to the electrolysis bath needing to be shut down.

S2: and the control terminal controls the rectification workshop to be powered off, so that the series bus is disconnected with the direct-current power supply.

S3: connect the energy dissipater in parallel on the disconnected opening of vestibule bus, connect in parallel and accomplish the back and send the voltage value of the disconnected opening of vestibule bus to control terminal through voltage acquisition unit, control terminal sends signal control energy dissipation conductor to the step switch according to the voltage value and intervenes.

Firstly, determining a corridor bus to be short-circuited according to an electrolytic cell needing shutdown; and then, the flexible connection on the energy dissipater is pressed and connected with the disconnection port of the corridor bus through a bus clamp. At the moment, controlling the rectification workshop to power off; the voltage values of the broken opening of the corridor bus and the energy dissipation conductor are sent to a control terminal through a voltage acquisition unit; the control terminal automatically adjusts the resistance value of the energy dissipation conductor of the energy dissipation device according to the calculated recoil electric energy; the control terminal sends out an instruction to control the intervention of the energy dissipation conductor; the voltage acquisition unit returns the voltage drop data of the energy dissipation conductor in real time.

When connecting energy dissipater in parallel on the disconnected opening of vestibule generating line, accessible generating line fixture is in the same place the flexible coupling on the energy dissipater with two port crimping of vestibule generating line, because the energy dissipation conductor is the high resistance state, can not have the electric current to pass through during the connection, so can not take place the phenomenon of striking sparks, also can not bring any danger for operating personnel, can not cause permanent harm to vestibule generating line and equipment more, after the people is connected all vestibule cross-over connection generating lines and corresponding energy dissipater, personnel withdraw the scene immediately.

S4: and reading the voltage value of the energy dissipation conductor through the control terminal, judging whether the back-flushing electric energy generated by the electrolytic bath reaches a preset safety range, if so, displaying energy dissipation completion prompt information, and disconnecting and transferring the energy dissipation device from the corridor bus.

Specifically, the voltage value of the energy dissipation conductor is read through the control terminal, and if the voltage value of the current energy dissipation conductor is smaller than or equal to a preset safety voltage, the recoil electric energy generated by the electrolytic cell reaches a preset safety range; at the moment, the control terminal displays energy dissipation completion prompt information and informs workers to disconnect and transfer the energy dissipaters from the corridor bus. Therefore, the energy dissipation of the corridor bus can be completed in a short time, and the condition that the whole series cannot be restarted due to long-time waiting is successfully avoided.

S5: and separating the insulating fork plate from the soft connection of the corridor bus to ensure that the corridor bus to be short-circuited is short-circuited.

After the energy dissipater is separated, the worker takes off the insulating fork plates on the corridor buses of all the short circuits, so that all the corridor buses to be short-circuited are short-circuited.

S6: the power supply switch is used for controlling the rectifying workshop to supply power to the serial buses, so that the aluminum electrolysis series can be recovered to be produced.

When the current of the series bus can form a circulation loop through the corridor bus after the corridor bus is short-circuited, the cross-sectional area of the crossover bus is the same as that of the series bus, so the resistance value of the crossover bus is very low, according to ohm's law, the direct current voltage drop at two ends of the crossover bus can be below 100mV after the corridor bus is short-circuited and communicated, for a working group with the working voltage of hundreds of volts required by normal production, the short circuit voltage drop facing the 100mV of the corridor crossover bus is equivalent to a power failure state, therefore, the down-stream working section can be conveniently and flexibly controlled to stop production or put into production by controlling the short circuit and the open circuit of the corridor bus, so when a certain working section has a fault, needs to stop production or put into production for control, the corridor bus can be controlled to control the production state, and the crossover bus can form a loop with the upstream series working section after the corridor bus is communicated, so the normal production of other residual working sections can not be influenced when the down-stream working section is stopped, therefore, the aluminum electrolysis series can flexibly run in a segmented mode according to needs in the production process, the influence on the normal production of the whole aluminum electrolysis series caused by various problems is avoided, various adverse factors under special conditions are reduced to the minimum while the current efficiency is improved, and controllable means are added.

The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.