Intermediate-frequency power supply system and method suitable for isotope separation cascade multi-working-condition operation

Abstract

The invention relates to an intermediate-frequency power supply system and method suitable for isotope separation cascade multi-working-condition operation, and is applied to the technical field of isotope separation. The system comprises a wire inlet cabinet, a power distribution cabinet and an intermediate-frequency power supply; the wire inlet cabinet, the power distribution cabinet and the medium-frequency power supply are electrically connected with one another; the power distribution cabinet comprises a main power distribution cabinet and a standby power distribution cabinet, and a change-over switch is arranged between the main power distribution cabinet and the standby power distribution cabinet; the power distribution cabinet is provided with three paths of output ends, and the power distribution cabinet is connected with the intermediate frequency power supply through the output ends; the medium-frequency power supply adopts a combined modular frequency converter and comprises a working power supply, a standby power supply and a maintenance power supply. The application has the effect that the intermediate frequency power supply system is more simplified and efficiently utilized.

Description

Technical Field

[0001] The present application relates to the technical field of isotope separation, and in particular to a medium frequency power supply system and method suitable for isotope separation cascade multi-operating condition operation. Background Art

[0002] In recent years, with the increasing market demand for isotopes, the research, design and construction of isotope engineering has entered a new historical period. Different isotope engineering has different separation processes and technologies. Due to the particularity of the separation process and the different operating conditions of the host, there are differentiated requirements for the power supply system. Isotope centrifugal separation technology is a key technology in the field of isotope enrichment technology. Among them, the separation host used for isotope centrifugal separation is a crucial equipment. The medium frequency power supply device, as the core supporting equipment of the separation host, has extremely high requirements for the power quality of its power supply, the stability and reliability of the power supply system.

[0003] In traditional isotope separation work, most of the time, a specific production line is set up, and its power supply system adopts a specific power supply mode to meet the technical requirements of traditional processes. It cannot be flexibly improved and adapted according to new processes and new technical means. If it is necessary to meet the separation process of new isotopes, new power supply plans and technologies must be formulated. However, the medium frequency power supply system has the characteristics of large investment, high production and operation maintenance costs, and complex power supply unit structure. How to make the medium frequency power supply system more simplified and efficiently utilized has become an urgent development need. Summary of the invention

[0004] In order to make the medium frequency power supply system more simplified and efficiently utilized, the present application provides a medium frequency power supply system and method suitable for isotope separation cascade multi-operating condition operation.

[0005] In a first aspect, the present application provides a medium frequency power supply system suitable for isotope separation cascade multi-operating conditions operation, which adopts the following technical solution:

[0006] A medium frequency power supply system suitable for isotope separation cascade multi-operating conditions operation, comprising:

[0007] Incoming cabinet, power distribution cabinet and medium frequency power supply;

[0008] The incoming line cabinet, the power distribution cabinet and the medium frequency power supply are all connected by electrical connection;

[0009] The power distribution cabinet comprises a main power distribution cabinet and a standby power distribution cabinet, and a transfer switch is provided between the main power distribution cabinet and the standby power distribution cabinet;

[0010] The power distribution cabinet is provided with three output terminals, and the power distribution cabinet is connected to the intermediate frequency power supply through the output terminals;

[0011] The intermediate frequency power supply adopts a combined modular frequency converter, and the intermediate frequency power supply includes a working power supply, a standby power supply and a maintenance power supply.

[0012] By adopting the above technical scheme, an incoming line cabinet for power supply, a distribution cabinet for power distribution and a medium frequency power supply for directly supplying power to the isotope separation host are set. When supplying power, high reliability and high redundancy performance of the system are achieved through modular design; the configured multiple outputs meet the requirements of the process system for multiple power supply outputs of the medium frequency system; the combined modular setting of the medium frequency power supply solves the separate power supply requirements of the isotope separation host, reduces the risk of extended shutdown due to power failure of the grouped units, and makes the medium frequency power supply system more simplified and efficiently utilized.

[0013] Optionally, the intermediate frequency power supply includes a plurality of power supply modules, the plurality of power supply modules are connected in parallel, and the plurality of power supply modules form a topological circuit.

[0014] Optionally, the maximum output capacity of the power supply module is a fixed capacity, the fixed capacity is set as a capacity interval, and the lower limit value of the capacity interval is 30 kVA.

[0015] Optionally, it also includes a power supply detection device, a controller and a fault prompt device, the power supply detection device and the fault prompt device are electrically connected to the main distribution cabinet, and the controller is electrically connected to the power supply detection device and the fault prompt device.

[0016] In a second aspect, the present application provides a medium frequency power supply method suitable for isotope separation cascade multi-operating conditions operation, which adopts the following technical solution:

[0017] A medium frequency power supply method suitable for isotope separation cascade multi-operating conditions operation, characterized in that it is applied to a medium frequency power supply system suitable for isotope separation cascade multi-operating conditions operation as described in any one of the first aspects, and the method comprises:

[0018] Obtain the operating condition requirements of the isotope separation host;

[0019] Determining a target operating state of the isotope separation host based on the operating condition requirement;

[0020] A power supply scheme of the medium frequency power supply is determined based on the target operating state and the maximum output capacity.

[0021] By adopting the above technical scheme, the target operating state of the isotope separation host is determined according to the operating condition requirements, and the power supply scheme of the medium frequency power supply is generated according to the maximum output capacity of the power supply module. The medium frequency power supply is controlled by the power supply scheme to perform power supply processing, making the medium frequency power supply system simpler and more efficiently utilized.

[0022] Optionally, the determining of the power supply scheme of the medium frequency power supply based on the target operating state and the maximum output capacity includes:

[0023] Determining the operating power supply requirement of the isotope separation host based on the target operating state;

[0024] Determine a target power supply module based on the operation power supply requirement and the maximum output capacity;

[0025] A power supply scheme of the intermediate frequency power supply is determined based on the target power supply power module and the target operating state.

[0026] Optionally, the method further includes:

[0027] Obtain the working status of the power supply module in real time;

[0028] Determine whether the power supply module fails based on the working status;

[0029] If the power supply module fails, the power supply module is controlled to exit the power supply operation state based on the droop control technology;

[0030] If the power supply module fails, repeat the step of obtaining the working status of the power supply module in real time.

[0031] Optionally, the method further includes:

[0032] Acquire power supply data collected by the power supply detection device in real time;

[0033] Determine whether the main power distribution cabinet can supply power normally based on the power supply data;

[0034] If the main power distribution cabinet can supply power normally, repeat the step of obtaining the power supply data collected by the power supply detection device in real time;

[0035] If the main power distribution cabinet cannot supply power normally, the fault prompt device is controlled by the controller to give a fault prompt.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] The incoming line cabinet for power supply, the power distribution cabinet for power distribution and the medium frequency power supply for directly supplying power to the isotope separation host are set. When supplying power, the high reliability and high redundancy performance of the system are achieved through modular design; the configured multiple outputs meet the process system's requirements for multiple power supply outputs of the medium frequency system; the combined modular setting of the medium frequency power supply solves the separate power supply requirements of the isotope separation host, reduces the risk of extended shutdown due to power failure of the group units, and makes the medium frequency power supply system more simplified and efficiently utilized;

[0038] According to the operating conditions, the target operating state of the isotope separation host is determined, and the power supply plan of the medium frequency power supply is generated according to the maximum output capacity of the power supply module. The medium frequency power supply is controlled through the power supply plan to perform power supply processing, making the medium frequency power supply system simpler and more efficiently utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural block diagram of a medium frequency power supply system suitable for isotope separation cascade multi-operating condition operation provided in an embodiment of the present application.

[0040] Figure 2 It is a structural block diagram of a medium frequency power supply system suitable for isotope separation cascade multi-operating condition operation provided in an embodiment of the present application.

[0041] Figure 3 It is a flow chart of a medium frequency power supply method suitable for isotope separation cascade multi-operating condition operation provided in an embodiment of the present application.

[0042] Explanation of the accompanying drawings: 1. Incoming cabinet; 2. Working power supply; 3. Backup power supply; 4. Maintenance power supply; 5. Main distribution cabinet; 6. Backup distribution cabinet; 7. Power supply detection device; 8. Controller; 9. Fault prompt device. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with the accompanying drawings.

[0044] Figure 1 A structural block diagram of a medium frequency power supply system suitable for isotope separation cascade multi-condition operation provided in an embodiment of the present application.

[0045] A medium frequency power supply system suitable for isotope separation cascade multi-operation conditions includes: an incoming line cabinet 1, a distribution cabinet and a medium frequency power supply; the incoming line cabinet 1, the distribution cabinet and the medium frequency power supply are all connected by electrical connection; the distribution cabinet includes a main distribution cabinet 5 and a backup distribution cabinet 6, and a conversion switch is provided between the main distribution cabinet 5 and the backup distribution cabinet 6; the distribution cabinet is provided with three output terminals, and the distribution cabinet is connected to the medium frequency power supply through the output terminals; the medium frequency power supply adopts a combined modular inverter, and the medium frequency power supply includes a working power supply 2, a backup power supply 3 and a maintenance power supply 4. The medium frequency power supply includes a plurality of power supply modules, and the plurality of power supply modules are connected in parallel, and the plurality of power supply modules form a topological circuit. The maximum output capacity of the power supply module is a fixed capacity, and the fixed capacity is set as a capacity interval, and the lower limit value of the capacity interval is 30kVA.

[0046] In this embodiment, the incoming cabinet 1, the power distribution cabinet and the medium frequency power supply are connected by electrical connection. When in use, the incoming cabinet 1 is also electrically connected to an external power supply system, and the external power supply system includes a power mains, a power UPS and a control UPS, etc. The power distribution cabinet distributes the electricity provided by the incoming cabinet 1 to the medium frequency power supply, and the medium frequency power supply is electrically connected to the isotope separation host and supplies power to the isotope separation host when it is working.

[0047] The power distribution cabinets are configured to have two power distribution cabinets, a main power distribution cabinet 5 and a backup power distribution cabinet 6. A transfer switch is provided between the main power distribution cabinet 5 and the backup power distribution cabinet 6. When in use, the main power distribution cabinet 5 is mainly used for work. When the main power distribution cabinet 5 fails or is undergoing maintenance, the staff switches through the transfer switch and uses the backup power distribution cabinet 6 to power the isotope separation host. It should be noted that both power distribution cabinets are provided with three output terminals, which are electrically connected to the working power supply 2, the backup power supply 3 and the maintenance power supply 4. The working power supply 2, the backup power supply 3 and the maintenance power supply 4 of the intermediate frequency power supply do not all work at the same time, but the intermediate frequency power supply is configured to be a redundant power supply system. When in use, the working power supply 2 is used first to work. When the working power supply 2 cannot be fully operational, the backup power supply 3 is used for work. When both the working power supply 2 and the backup power supply 3 cannot be fully operational, the backup power supply 3 is used for work. When working, it switches to using the maintenance power supply 4 to ensure the continuous attack of electricity, and the medium frequency power supply adopts the mode of combined modular inverter, that is, the working power supply 2, the backup power supply 3 and the maintenance power supply 4 all adopt the mode of combined modular inverter, and the hot plug technology is used to realize the efficient utilization of the medium frequency power supply combined modular inverter, the power demand is configured on demand, and the medium frequency power supply is configured with multiple power supply modules as needed. The maximum output capacity of a single power supply module is a fixed capacity, and the fixed capacity is set to the capacity range. The lower limit of the range is set to 30kVA, and the upper limit needs to be set according to the actual work needs. Multiple power supply modules are set in parallel, and the power can be flexibly configured according to the specific load requirements, that is, the parallel output of multiple power supply modules can achieve self-redundancy under various operating conditions.

[0048] At the same time, the medium frequency power supply is equipped with online replacement technology for power supply modules. When a power supply module fails, it automatically exits the current power supply operation state and is replaced by other power supply modules for normal power supply operation without stopping the machine for processing. The mutual redundancy function between power supply modules is fully utilized without affecting the operation of the medium frequency power supply. The power supply modules adopt a common AC input and common AC output topology circuit. In the control link of the power supply module, the parallel control technology of droop control is adopted to realize the common AC output of the bus system and load power sharing; the power supply module is a standardized unit, which is convenient for on-site maintenance and replacement.

[0049] In this embodiment, in addition to the above-mentioned basic device, it also includes a power supply detection device 7, a controller 8 and a fault prompt device 9. The power supply detection device 7 and the fault prompt device 9 are electrically connected to the main distribution cabinet 5, and the controller 8 is electrically connected to the power supply detection device 7 and the fault prompt device 9.

[0050] The power supply detection device 7 is used to detect the power supply status of the distribution cabinet. When the distribution cabinet can no longer supply power, the controller 8 controls the fault prompt device 9 to give a fault prompt to remind the staff that there is a problem with the power supply and the current working distribution cabinet needs to be replaced.

[0051] The embodiment of the present application provides a medium frequency power supply method suitable for isotope separation cascade multi-condition operation, which can be executed by an electronic device, which can be a server or a terminal device, wherein the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device can be a smart phone, a tablet computer, a desktop computer, etc., but is not limited thereto.

[0052] Figure 3 A flow chart of a medium frequency power supply method suitable for isotope separation cascade multi-condition operation provided in an embodiment of the present application.

[0053] like Figure 3 As shown, the main process of the method is described as follows (steps S101 to S103):

[0054] Step S101, obtaining the operating condition requirements of the isotope separation host.

[0055] In this embodiment, for different isotopes, the working states of the isotope separation host are different during separation, and the operating condition requirements of the isotope separation host are collected, so that a subsequent power supply plan is formulated according to the operating condition requirements.

[0056] Step S102: determining a target operating state of the isotope separation host based on operating condition requirements.

[0057] In this embodiment, the target operating state of the isotope separation host is determined by the operating condition requirements provided by the user. A certain number of isotope separation hosts constitute a column, and multiple groups of columns constitute the entire process production line. Different working states of the production line are determined by the combination state and operating state of the isotope separation hosts in columns. Therefore, different operating condition requirements correspond to different target operating states. For example, the operating condition requirements of the same element A are different from the operating condition requirements of the same element B, so the corresponding target operating states are also different, that is, the operating columns and the power output information of each column are different, which correspond to different production lines.

[0058] The power supply requirements that can be achieved by the isotope separation host include: ① Host startup state: AC 36V, 50Hz; ② Host level I operation: AC200* (1±5%) V, Fn / 3* (1±0.1%); ③ Host level II operation: AC380* (1±5%) V, Fn* (1±0.1%); ④ Output U-THD: <5%. When working, the running columns and the running states are combined to meet the needs of different isotope separations, that is, the combination of column host level I, level II and startup state operation; due to the number of columns and different working states, the process formulates different production states according to production needs, thereby determining the target operating state of the main isotope separation host.

[0059] For example, there are currently 8 isotope separation mainframes in operation, with columns 1-3 in level I operation, columns 4-6 in level II operation, and columns 7-8 in shutdown state; at this time, column 7 is added as needed to transition from startup to level I, and then to level II, to reach the stage target production process state; based on the product status, the operation is adjusted a second time, column 4 is stopped, and the last column 8 is started.

[0060] It can be seen that the separation technology effects of all types of isotopes are operated according to the multi-state adjustment of the isotope separation host, that is, multiple combination outputs of different states to meet the operation requirements of various process isotope separation hosts.

[0061] Step S103, determining a power supply scheme of the medium frequency power supply based on the target operating state and the maximum output capacity.

[0062] For step S103, the operating power supply requirement of the isotope separation host is determined based on the target operating state; the target power supply module is determined based on the operating power supply requirement and the maximum output capacity; and the power supply scheme of the medium frequency power supply is determined based on the target power supply module and the target operating state.

[0063] In this embodiment, after determining the target operating state, the operating power supply demand is obtained at the same time, and the operating power supply demand of each isotope separation host is determined according to the target operating state, and then the target power supply module is determined according to the maximum output capacitance of the isotope separation host, that is, a suitable power supply module is selected for power supply, or two or more power supply modules are connected in parallel for power supply. For example, if the operating power supply demand of the isotope separation host is 500kVA, and the upper limit value of the maximum output capacitance of power supply module A is 600kVA, then power supply module A is directly used as the target power supply module. If the upper limit value of the maximum output capacitance of power supply module A is 300kVA, and the upper limit value of the maximum output capacitance of power supply module B is 300kVA, then power supply module A and power supply module B are connected in parallel as the target power supply module. It should be noted that the example here only provides a selection method for the use of the power supply module, and the selection of the specific target power supply module needs to be set according to actual needs, which is not specifically limited here.

[0064] After obtaining the target power supply module, the target power supply module is bound to the target operating state, and a power supply scheme of the intermediate frequency power supply is generated, so that when performing isotope separation, the intermediate frequency power supply can perform power supply processing through the power supply scheme.

[0065] In this embodiment, the working status of the power supply module is acquired in real time; whether the power supply module fails is determined based on the working status; if the power supply module fails, the power supply module is controlled to exit the power supply operation state based on the droop control technology; if the power supply module fails, the step of acquiring the working status of the power supply module in real time is repeated.

[0066] In order to ensure the normal operation of the isotope separation host, it is necessary to ensure that all power supply modules are in a normal power supply state, so as to monitor and obtain the working state of the power supply modules in real time, and judge whether the power supply module has a fault according to the working state, that is, compare the information such as power supply amount and power supply continuity with the standard working state. If the comparison results are consistent, it means that no fault has occurred, and the working state of the power supply module will continue to be obtained. If the comparison results are inconsistent, it means that a fault has occurred. Based on the droop control technology, the power supply module currently supplying power will be automatically controlled to exit the power supply operation state, and other power supply modules will be controlled to replace the power supply module to continue to perform the power supply work.

[0067] In this embodiment, power supply data collected by the power supply detection device is acquired in real time; whether the main distribution cabinet can supply power normally is determined based on the power supply data; if the main distribution cabinet can supply power normally, the step of acquiring the power supply data collected by the power supply detection device in real time is repeated; if the main distribution cabinet cannot supply power normally, a fault prompt device is controlled based on the controller to give a fault prompt.

[0068] In order to ensure the normal operation of the isotope separation host, the power supply data of the power supply detection device is collected in real time. The power supply data also includes the power supply amount and power supply continuity. The information such as power supply amount and power supply continuity is compared with the standard power supply data, that is, whether the main distribution cabinet is supplying power normally is judged according to the power supply data. If the comparison result is consistent, it means that the main distribution cabinet can supply power normally, and the power supply data will continue to be acquired. If the comparison result is inconsistent, it means that the main distribution cabinet cannot supply power normally, and the fault prompt device will be controlled by the controller to give a fault prompt to remind the staff that the distribution cabinet needs to be replaced.

[0069] The terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0070] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned application concept. For example, the above features are replaced with (but not limited to) technical features with similar functions applied in the present application.

Claims

1. A medium frequency power supply system suitable for isotope separation cascade multi-operating conditions, characterized in that: include: Incoming line cabinet (1), power distribution cabinet and medium frequency power supply; The incoming line cabinet (1), the power distribution cabinet and the medium frequency power supply are all connected by electrical connection; The power distribution cabinet comprises a main power distribution cabinet (5) and a backup power distribution cabinet (6), and a transfer switch is provided between the main power distribution cabinet (5) and the backup power distribution cabinet (6); The power distribution cabinet is provided with three output terminals, and the power distribution cabinet is connected to the intermediate frequency power supply through the output terminals; The medium frequency power supply adopts a combined modular frequency converter, and the medium frequency power supply comprises a working power supply (2), a standby power supply (3) and a maintenance power supply (4).

2. The system according to claim 1, characterized in that The intermediate frequency power supply includes a plurality of power supply modules, the plurality of power supply modules are connected in parallel, and the plurality of power supply modules form a topological circuit.

3. The system according to claim 2, characterized in that The maximum output capacity of the power supply module is a fixed capacity, the fixed capacity is set as a capacity interval, and the lower limit value of the capacity interval is 30 kVA.

4. The system according to claim 1, characterized in that It also includes a power supply detection device (7), a controller (8) and a fault prompt device (9), wherein the power supply detection device (7) and the fault prompt device (9) are electrically connected to the main power distribution cabinet (5), and the controller (8) is electrically connected to the power supply detection device (7) and the fault prompt device (9).

5. A medium frequency power supply method suitable for isotope separation cascade multi-operation operation, characterized in that: Applied to a medium frequency power supply system suitable for isotope separation cascade multi-condition operation as described in any one of claims 1 to 4, the method comprising: Obtain the operating condition requirements of the isotope separation host; Determining a target operating state of the isotope separation host based on the operating condition requirement; A power supply scheme of the medium frequency power supply is determined based on the target operating state and the maximum output capacity.

6. The method according to claim 5, characterized in that The determining of the power supply scheme of the medium frequency power supply based on the target operating state and the maximum output capacity includes: Determining the operating power supply requirement of the isotope separation host based on the target operating state; Determine a target power supply module based on the operation power supply requirement and the maximum output capacity; A power supply scheme of the intermediate frequency power supply is determined based on the target power supply power module and the target operating state.

7. The method according to claim 5, characterized in that The method further comprises: Obtain the working status of the power supply module in real time; Determine whether the power supply module fails based on the working status; If the power supply module fails, the power supply module is controlled to exit the power supply operation state based on the droop control technology; If the power supply module fails, repeat the step of obtaining the working status of the power supply module in real time.

8. The method according to claim 5, characterized in that The method further comprises: Acquire power supply data collected by the power supply detection device in real time; Determine whether the main power distribution cabinet can supply power normally based on the power supply data; If the main power distribution cabinet can supply power normally, repeat the step of obtaining the power supply data collected by the power supply detection device in real time; If the main power distribution cabinet cannot supply power normally, the fault prompt device is controlled by the controller to give a fault prompt.

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