Direct current converter station filter operation control method, device and system and computer equipment

Abstract

The invention relates to a direct-current converter station filter operation control method, device and system, computer equipment, a computer readable storage medium and a computer program product, and the method comprises the steps: obtaining the operation state of each filter bank of a direct-current converter station, determining an available filter bank from each filter bank based on a maintenance state, responding to a switching instruction, and carrying out the switching of the available filter bank. And determining a respondable filter bank of which the switching state corresponds to the switching instruction from the available filter banks, and performing operation control on the respondable filter bank. Wherein the operation state comprises a switching state and a maintenance state. By detecting and analyzing the operation state of each filter bank, the filter bank participating in switching can be adjusted based on the state of each filter bank when the switching instruction is received, so that the operation of the direct current converter station is adjusted, each filter bank can participate in the operation of the direct current converter station, and the utilization rate of equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of direct current transmission technology, and in particular to a direct current converter station filter operation control method, device, system, computer equipment, computer-readable storage medium and computer program product. Background Art

[0002] DC transmission technology is an emerging power technology with the advantages of large transmission capacity, high voltage level, low manufacturing cost, flexible operation mode, low operation loss, mature and reliable technology. When transmitting electric energy in large capacity and long distance, this transmission method has good technical and economic performance and is the development direction of today's long-distance transmission projects. DC transmission is based on DC converter stations, and during the operation of DC converter stations, different numbers of AC filter groups need to be switched on and off to meet the needs of DC power transmission, and a large amount of reactive power is consumed in the process.

[0003] The switching method of the AC filter group in the DC converter station that is often used at present is the "first in, first out" method, that is, the AC filter group that is put into operation first will be cut off first when it needs to be cut off. The order of switching is fixed by the program and cannot be adjusted. This control method is simple and easy, but it only controls mechanically according to the existing switching order, and cannot adapt to the changing environment of the DC converter station. When facing a large number of AC filter groups, it is impossible to take into account the actual operating status of each AC filter group, and there is a problem of low equipment utilization rate in the DC converter station. Summary of the invention

[0004] Based on this, it is necessary to provide a DC converter station filter operation control method, device, system, computer equipment, computer-readable storage medium and computer program product that can improve equipment utilization rate in response to the above technical problems.

[0005] In a first aspect, the present application provides a method for controlling operation of a filter in a DC converter station, the method comprising:

[0006] Acquiring the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0007] determining an available filter group from each of the filter groups based on the maintenance status;

[0008] In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

[0009] In one embodiment, the switching instruction includes a removal instruction, the switching state corresponding to the removal instruction is an on state, and in response to the switching instruction, determining a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and operating and controlling the responsive filter group, comprises:

[0010] In response to the cut-off instruction, determining the available filter group whose switching state is in the engaged state from the available filter groups as the responsive filter group;

[0011] Obtaining the input duration of each of the responsive filter groups;

[0012] The operation of each of the responsive filter groups is controlled according to the input time and the cut-off instruction.

[0013] In one embodiment, the operation control of each of the responsive filter groups according to the input duration and the cut-off instruction includes:

[0014] The responsive filter groups are sorted according to the input duration to obtain a cut-off sequence; in the cut-off sequence, the input duration of the previous responsive filter group is greater than or equal to the input duration of the next responsive filter group;

[0015] Based on the cutting instruction and the cutting sequence, a target filter group is determined, and the cutting of the target filter group is controlled.

[0016] In one embodiment, the switching instruction includes an input instruction, the switching state corresponding to the input instruction is a cut-off state, and the responding to the switching instruction, determining a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and operating and controlling the responsive filter group, includes:

[0017] In response to the input instruction, determining the available filter group whose switching state is the cut-off state from the available filter groups as the responsive filter group;

[0018] Obtaining the input duration and discharge duration of each of the responsive filter groups;

[0019] The operation of each of the responsive filter groups is controlled according to the input time, the discharge time and the input instruction.

[0020] In one embodiment, the operation control of each of the responsive filter groups according to the input duration, the discharge duration and the input instruction includes:

[0021] The responsive filter groups are sorted according to the input duration and the discharge duration to obtain an input sequence; in the input sequence, the input duration of the previous responsive filter group is less than or equal to the input duration of the next responsive filter group;

[0022] Based on the input instruction and the input sequence, a target filter group is determined, and input of the target filter group is controlled.

[0023] In one embodiment, the step of sorting the responsive filter groups according to the input duration and the discharge duration to obtain an input sequence includes:

[0024] Compare the discharge time with a preset discharge time, and determine that the responsive filter group whose discharge time is longer than the preset discharge time is a discharged filter group;

[0025] The discharged filter groups are sorted according to the input duration to obtain an input sequence.

[0026] In a second aspect, the present application further provides a DC converter station filter operation control device, the device comprising:

[0027] A detection module, used to obtain the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0028] Running a screening module for determining an available filter group from each of the filter groups based on the maintenance status;

[0029] The switching control module is used for determining, in response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and performing operation control on the responsive filter group.

[0030] In a third aspect, the present application further provides a DC converter station filter operation control system, the DC converter station filter operation control system comprising a controller and a plurality of timers, the timers are respectively arranged in each filter group of the DC converter station and connected to the controller, and the controller is connected to each filter group of the DC converter station;

[0031] The timer is used to record the input time when the corresponding filter group enters the input state, and to record the discharge time when the corresponding filter group enters the cut-off state; each timer sends the input time and the discharge time to the controller, and the controller is used to control each filter group based on the above method.

[0032] In a fourth aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0033] Acquiring the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0034] determining an available filter group from each of the filter groups based on the maintenance status;

[0035] In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

[0036] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0037] Acquiring the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0038] determining an available filter group from each of the filter groups based on the maintenance status;

[0039] In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

[0040] In a sixth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0041] Acquiring the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0042] determining an available filter group from each of the filter groups based on the maintenance status;

[0043] In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

[0044] The above-mentioned DC converter station filter operation control method, device, system, computer equipment, computer-readable storage medium and computer program product include obtaining the operating status of each filter group of the DC converter station, determining the available filter group from each filter group based on the maintenance status, and determining the responsive filter group corresponding to the switching status and the switching instruction from the available filter groups in response to the switching instruction, and performing operation control on the responsive filter group. Among them, the operating status includes the switching status and the maintenance status. By detecting and analyzing the operating status of each filter group, when the switching instruction is received, the filter group involved in the switching can be adjusted based on the status of each filter group, thereby adjusting the operation of the DC converter station. In this way, the switching control can be performed according to the actual operating conditions of each filter group in the DC converter station, which is conducive to each filter group being able to participate in the operation of the DC converter station and improve the equipment utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 This is an application environment diagram of a DC converter station filter operation control method in one embodiment;

[0047] Figure 2 It is a schematic flow chart of a method for controlling operation of a filter in a DC converter station in one embodiment;

[0048] Figure 3 A schematic flow chart of steps for responding to a switching instruction, determining a responsive filter group whose switching state corresponds to the switching instruction from available filter groups, and performing operation control on the responsive filter group in response to a switching instruction in one embodiment;

[0049] Figure 4 It is a flowchart of the steps of operating and controlling each responsive filter group according to the input duration and the cut-off instruction in one embodiment;

[0050] Figure 5 A schematic flow chart of another embodiment of the invention for responding to a switching instruction, determining a responsive filter group whose switching state corresponds to the switching instruction from available filter groups, and performing operation control on the responsive filter group;

[0051] Figure 6 It is a flowchart of the steps of operating and controlling each responsive filter group according to the input time, the discharge time and the input instruction in one embodiment;

[0052] Figure 7 It is a flowchart of obtaining the input sequence step by sorting each responsive filter group according to the input time and the discharge time in one embodiment;

[0053] Figure 8 It is a flow chart of a method for controlling operation of a filter in a DC converter station according to another embodiment;

[0054] Fig. 9 It is a structural block diagram of a DC converter station filter operation control device in one embodiment;

[0055] Fig.10 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first filter may be referred to as a second filter, and similarly, a second filter may be referred to as a first filter. Both the first filter and the second filter are filters, but they are not the same filter.

[0058] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0059] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0061] The DC converter station filter operation control method provided in the embodiment of the present application can be applied to Figure 1 The DC converter station filter operation control system shown in FIG. Figure 1 As shown, the DC converter station filter operation control system includes a controller 102 and a plurality of timers 104. The timers 104 are respectively arranged in each filter group of the DC converter station and connected to the controller 102. The controller 102 is connected to each filter group of the DC converter station. Among them, each filter group of the DC converter station can adjust the operation of the DC converter station by adjusting the switching state. The switching state of the filter group includes an input state and a cut-off state. The filter group in the input state is connected to the power network in the DC converter station and participates in the operation; the filter group in the cut-off state is disconnected from the power network in the DC converter station and does not participate in the operation.

[0062] The timer 104 is used to record the input duration when the corresponding filter group enters the input state, and to record the discharge duration when the corresponding filter group enters the cut-off state. Each timer 104 sends both the input duration and the discharge duration to the controller 102, and the controller 102 is used to control each filter group based on the method described in each embodiment of the present application.

[0063] The timer 104 is a device capable of recording time. The filter group set in the DC converter station can be triggered to start or stop timing due to the mechanical structure change or circuit parameter change caused by the switching action of the filter group, or can be started or stopped under the control of the controller 102. Optionally, when the number of filter groups in the DC converter station is n, the number of timers 104 can be n, so that each filter group is correspondingly provided with a timer 104; the number of timers 104 can also be 2n, so that each filter group is correspondingly provided with two timers 104, one of which is used to record the input time when the filter group enters the input state, and send the input time of the filter group to the controller 102; the other is used to record the discharge time each time the filter group enters the cut-off state, and send the discharge time of the filter group to the controller 102. Among them, the input time can be accumulated, which is the accumulated working time of the filter group, and is not cleared when the filter is in the cut-off state; the discharge time cannot be accumulated, which is the single discharge time of the filter group, and is cleared when the filter is in the input state.

[0064] Taking the start and stop of the timer 104 controlled by the controller 102 as an example, the following is an exemplary explanation: when a filter group in the DC converter station filter operation control system is switched from the cut-off state to the put-in state, the controller 102 controls the timer 104 responsible for recording the put-in time of the filter group to start, starts timing based on the previous working time, and feeds back the put-in time obtained by timing to the controller 102. At the same time, the controller 102 controls the timer 104 responsible for recording the discharge time of the filter group to pause and reset, and ends the recording of this discharge time. If the number of timers 104 corresponding to the filter group is one, that is, the timer 104 responsible for recording the put-in time and the timer 104 responsible for recording the discharge time are the same timer 104, then the controller 102 can control the counter to perform timing in different states when the switching state of the filter group changes, so as to record the put-in time and discharge time of the filter group.

[0065] It should be noted that for a filter group, the switched-on state and the switched-off state cannot exist at the same time, and there is a mutually exclusive relationship, so a filter group can only have one of the switched-on time or the switched-off time at the same time. A DC converter station includes multiple filter groups, and the switching states of each filter group can be different. Then the DC converter station can include filter groups in the switched-on state and filter groups in the switched-off state at the same time.

[0066] The controller 102 controls the operation of the DC converter station by switching each filter group between the input state and the removed state. Specifically, the controller 102 can obtain the input time and discharge time of each filter group as described above, control the filter group according to the DC converter station filter operation control method described in this application, and then adjust the operation of the DC converter station.

[0067] In an exemplary embodiment, Figure 2 As shown, a DC converter station filter operation control method is provided, and the method is applied to Figure 1 The controller 102 in FIG. 1 is taken as an example to illustrate the method, which includes the following steps 202 to 206. Among them:

[0068] Step 202, obtaining the operating status of each filter group of the DC converter station.

[0069] Among them, the operating status includes the switching status and the maintenance status. The switching status refers to whether each filter group is connected to the power network of the DC converter station. The switching status of the filter group includes the switched-on status and the removed status. The filter group in the switched-on status is connected to the power network in the DC converter station and participates in the operation; the filter group in the removed status is disconnected from the power network in the DC converter station and does not participate in the operation. The maintenance status refers to whether each filter group needs maintenance. The maintenance status can include the maintenance-required status and the maintenance-free status. The filter group in the maintenance-required status may have problems such as faults and abnormalities that prevent it from participating in the operation and needs to stop working for maintenance; the filter group in the maintenance-free status can work normally and participate in the operation.

[0070] Specifically, the controller is connected to each filter group of the DC converter station, and can obtain the switching status and maintenance status of each filter group of the DC converter station by interacting with the data of each filter group, or through terminal data analysis, or through manually set operating conditions, and record the operating conditions of each filter group of the DC converter station to facilitate subsequent control of the filter group and achieve accurate operation control.

[0071] Step 204: determining an available filter group from among the filter groups based on the maintenance status.

[0072] Specifically, the controller first screens each filter group according to the maintenance status, and selects the available filter groups from the filter groups of the DC converter station. The maintenance status includes the maintenance-required state and the maintenance-free state. The filter group in the maintenance-required state has a fault and cannot participate in the operation. It needs to be repaired in time and is excluded when the DC converter station is operated and controlled. In other words, the controller removes the filter groups whose maintenance status is in the maintenance-required state, and determines the remaining filter groups whose maintenance status is in the maintenance-free state as the available filter groups.

[0073] Furthermore, for the filter group whose maintenance status is in the maintenance-required state, the controller can also record its serial number or identification code and other data that can characterize the identification identity, and generate prompt maintenance information, so as to remind the maintenance personnel to repair the filter group in time and switch the maintenance status of the filter group to the maintenance-required state as soon as possible. Optionally, the prompt maintenance information can be a prompt device connected to the controller, and the prompt device generates prompt information corresponding to the prompt maintenance information. Exemplarily, the prompt device can be a display screen, an audible and visual prompter, a cloud server, etc., which are only examples here.

[0074] Step 206, in response to the switching instruction, determining a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and performing operation control on the responsive filter group.

[0075] The switching instruction may be issued by a device capable of sending instructions to the controller, such as a host computer or a cloud server connected to the controller, and the switching instruction is used to indicate that the DC converter station needs to perform a corresponding switching action and change the operation mode. The switching instruction may also be generated by the operation control logic of the DC converter station filter pre-stored in the controller, and the operation control logic can generate a corresponding switching instruction under certain time conditions or certain operating conditions, indicating that the DC converter station needs to perform a corresponding switching action and adjust the operation.

[0076] Specifically, after the controller obtains the available filter groups through screening, it does not immediately control and adjust the filter groups of the DC converter station, but analyzes and controls the available filter groups when receiving the switching command. The controller responds to the switching command. Since different operation control steps need to be implemented when the switching commands are different, it is necessary to screen the available filter groups whose switching states correspond to the switching commands from the available filter groups, and determine these screened available filter groups as responsive filter groups. The responsive filter groups represent the filter groups that can respond to the switching commands received this time, and the controller can perform operation control in the responsive filter groups to realize the operation control of the DC converter station.

[0077] Furthermore, the switching instruction may include a specified switching action and a specified switching quantity. When the controller performs operation control on the responsive filter group, it is necessary to determine the filter group to be finally controlled from the responsive filter group. The controller can analyze the filter groups in the responsive filter group based on the input time and discharge time recorded by the timer, determine the filter group to be finally controlled according to the switching quantity, and perform corresponding switching action control.

[0078] The above-mentioned DC converter station filter operation control method includes obtaining the operation status of each filter group of the DC converter station, determining the available filter group from each filter group based on the maintenance status, and determining the responsive filter group whose switching status corresponds to the switching instruction from the available filter groups in response to the switching instruction, and performing operation control on the responsive filter group. Among them, the operation status includes the switching status and the maintenance status. By detecting and analyzing the operation status of each filter group, when the switching instruction is received, the filter group involved in the switching can be adjusted based on the status of each filter group, thereby adjusting the operation of the DC converter station. In this way, the switching control can be performed according to the actual operation status of each filter group in the DC converter station, which is conducive to each filter group being able to participate in the operation of the DC converter station and improve the equipment utilization rate.

[0079] Different switching instructions correspond to different operation control modes, that is, the controller will execute different steps according to different switching instructions. Figure 3As shown, the switching instruction includes a removal instruction, that is, it is necessary to control a specified number of filter groups to disconnect the power network of the DC converter station, and control some filter groups to switch from the input state to the removal state. Therefore, the switching state corresponding to the removal instruction is the input state, and the filter group can only participate in the execution of the removal instruction when it is in the input state. Then step 206 includes steps 302 to 306.

[0080] Step 302: In response to the removal instruction, an available filter group whose switching state is an engaged state is determined from the available filter groups as a responsive filter group.

[0081] Specifically, if the switching instruction received by the controller is a cut-off instruction, the controller responds to the cut-off instruction by screening out the available filter groups whose switching states correspond to the cut-off instructions, that is, the available filter groups whose switching states are the engaged states, and determines these screened available filter groups as responsive filter groups.

[0082] Step 304, obtaining the input duration of each responsive filter group.

[0083] Wherein, the input duration is obtained by recording by a timer, and the timer is respectively correspondingly arranged at each filter group, and when the switching state of the corresponding filter group is switched to the input state, the time is continued on the basis of the previous input duration to obtain the input duration. When different filter groups are switched to the input state at different times, the input durations obtained by each timer record are also different. Since each responsive filter group is obtained by screening from each filter group, the timer can also record the input duration of the responsive filter group.

[0084] Exemplarily, when the switching state of the filter group is marked as 0 or 1, where 0 represents that the filter group is in the cut-off state, and 1 represents that the filter group is in the on-state, the timer continues to count when the switching state of the filter group is set to 1, and records the on-time of the filter group.

[0085] Specifically, the controller is connected to the timer corresponding to each responsive filter group, or there is a corresponding timing circuit in the controller, and the input time of each responsive filter group is obtained by exchanging data with the timer or the timing circuit. It should be noted that the step of obtaining the input time can be after receiving the removal instruction, or before receiving the removal instruction, or it can be obtained synchronously with the acquisition of the operating status in step 202.

[0086] Step 306: Control the operation of each responsive filter group according to the input duration and the cut-off instruction.

[0087] Specifically, the controller performs operation control on each responsive filter group based on the cut-off instruction and the input time of each responsive filter group. The cut-off instruction may include a cut-off action and the number of cuts, and the controller determines the filter group to perform the cut-off action based on the input time, and the number of the filter groups to perform the cut-off action is equal to the number included in the cut-off instruction. The controller cuts off the responsive filter groups determined to perform the cut-off action, so that the switching state of these responsive filter groups is switched from the input state to the cut-off state, and the operation control of the DC converter station is completed.

[0088] Optionally, the controller may determine the responsive filter group that finally performs the excision action according to the input time of each responsive filter group, for example, the average input time is calculated based on the input time, and the responsive filter group corresponding to the input time closer to the average input time is determined as the responsive filter group that performs the excision action. Alternatively, the responsive filter group with a shorter input time may be determined as the responsive filter group that performs the excision action, or the responsive filter group with a longer input time may be determined as the responsive filter group that performs the excision action.

[0089] Furthermore, in an exemplary embodiment, Figure 4 As shown, step 306 includes steps 402 to 404 .

[0090] Step 402: sort the responsive filter groups according to the input duration to obtain a cut-off sequence.

[0091] Among them, in the excision sequence, the input time length of the previous responsive filter group is greater than or equal to the input time length of the next responsive filter group. That is to say, in the excision sequence, the input time lengths are arranged in descending order, and the responsive filter group with a larger input time length is ranked higher, and the responsive filter group with a smaller input time length is ranked lower.

[0092] Specifically, the controller sorts the responsive filter groups according to the input time, sorts the input time in descending order, and sorts the responsive filter groups corresponding to the input time in sequence to obtain a removal sequence.

[0093] Step 404: determine the target filter group based on the removal instruction and the removal sequence, and control the removal of the target filter group.

[0094] Specifically, the controller selects a responsive filter group from the cut sequence according to the order based on the cut action requirements and the number of cuts in the cut instruction, and determines the target filter group. For example, when the number of cuts required in the cut instruction is 3, the controller selects the top three responsive filter groups from the cut sequence as the target filter group. After obtaining the target filter group, the controller controls the target filter group to switch from the input state to the cut state to complete the operation control.

[0095] In this embodiment, in response to the removal instruction, the controller selects the responsive filter group from each available filter group, obtains the input time of each responsive filter group, controls the responsive filter group according to the length of the input time, determines the target filter group and controls the target filter group to switch from the input state to the removal state. By analyzing the input time of each filter group and preferentially controlling the removal of the filter group with a longer input time, it is possible to effectively avoid a single filter group from being too long in input time, which is conducive to extending the service life of the filter group and improving the participation of different filter groups, which is equivalent to improving the utilization rate of the equipment.

[0096] In an exemplary embodiment, Figure 5 As shown, the switching instruction includes an input instruction, that is, it is necessary to control a specified number of filter groups to access the power network of the DC converter station, and control some filter groups to switch from the cut-off state to the input state. Therefore, the switching state corresponding to the input instruction is the cut-off state, and the filter group can participate in the execution of the input instruction only when it is in the cut-off state. Step 206 includes steps 502 to 506.

[0097] Step 502: In response to the input instruction, an available filter group whose switching state is a cut-off state is determined from the available filter groups as a responsive filter group.

[0098] Specifically, the switching instruction received by the controller is an input instruction. Then, in response to the input instruction, the controller screens out available filter groups whose switching states correspond to the input instruction from the available filter groups, that is, available filter groups whose switching states are cut-off states, and determines these screened available filter groups as responsive filter groups.

[0099] Step 504: Obtain the input duration and discharge duration of each responsive filter group.

[0100] Among them, the input duration and the discharge duration are obtained by recording the timer. The timer is respectively set in each filter group. When the switching state of the corresponding filter group is switched to the input state, the timer continues to count on the basis of the previous input duration to obtain the input duration; and when the switching state of the corresponding filter group is switched to the cut-off state, the timer starts counting from zero to obtain the discharge duration. When different filter groups are switched to the cut-off state at different times, the discharge durations recorded by each timer are also different. Since each responsive filter group is obtained by screening from each filter group, the timer can also record the discharge duration of the responsive filter group.

[0101] Exemplarily, when the switching state of the filter group is marked as 0 or 1, where 0 represents that the filter group is in the cut-off state, and 1 represents that the filter group is in the switched-on state, the timer starts timing from zero when the switching state of the filter group is set to 0, and records the discharge duration of the filter group.

[0102] Specifically, the controller is connected to the timer corresponding to each responsive filter group, or there is a corresponding timing circuit in the controller, and the discharge duration of each responsive filter group is obtained by exchanging data with the timer or the timing circuit. It should be noted that the step of obtaining the discharge duration can be after receiving the input instruction, or before receiving the input instruction, or it can be obtained synchronously with the operation status obtained in step 202.

[0103] Step 506, controlling the operation of each responsive filter group according to the input time, the discharge time and the input instruction.

[0104] Specifically, the controller controls the operation of each responsive filter group based on the input instruction, the input duration and the discharge duration of each responsive filter group. The input instruction may include an input action and the number of inputs, and the controller determines the filter group to perform the input action based on the input duration and the discharge duration, and the number of the filter groups to perform the input action is equal to the number included in the input instruction. The controller connects the responsive filter groups determined to perform the input action to the power network, so that the switching state of these responsive filter groups is switched from the cut-off state to the input state, and completes the operation control of the DC converter station.

[0105] Optionally, the controller may be a responsive filter group that determines the final input action according to the input time and discharge time of each responsive filter group. For example, the average discharge time may be calculated based on the discharge time, and the responsive filter group with a discharge time longer than the average discharge time and a shorter input time may be determined as the responsive filter group that performs the input action. Alternatively, the responsive filter group with a longer discharge time may be determined as the responsive filter group that performs the input action, or the responsive filter group with a shorter input time may be determined as the responsive filter group that performs the input action.

[0106] Furthermore, in an exemplary embodiment, Figure 6 As shown, step 506 includes steps 602 to 604 .

[0107] Step 602: sort the responsive filter groups according to the input duration and the discharge duration to obtain an input sequence.

[0108] Among them, in the input sequence, the input time of the previous responsive filter group is less than or equal to the input time of the next responsive filter group. That is to say, in the input sequence, the input times are arranged in ascending order, and the responsive filter group with a smaller input time value is ranked higher, and the responsive filter group with a larger input time value is ranked lower.

[0109] Specifically, the controller sorts each responsive filter group according to the input time and the discharge time, sorts each input time in descending order, and uses the discharge time as an adjustment condition to adjust the sequence of some responsive filter groups whose discharge time does not meet the condition, for example, the input time of the responsive filter group whose discharge time is lower than the average discharge time is placed at the rear. Or the input time of the responsive filter group whose discharge time is lower than a certain set value is placed at the rear. Then, the responsive filter groups corresponding to each input time are sorted to obtain a removal sequence.

[0110] Further, when the input sequence is obtained, the responsive filter bank can be screened. In an exemplary embodiment, Figure 7 As shown, step 602 includes steps 702 to 704.

[0111] Step 702 , comparing the discharge time with the preset discharge time, and determining that the responsive filter group whose discharge time is longer than the preset discharge time is a discharged filter group.

[0112] Specifically, the controller stores a preset discharge time, which is used to indicate that the filter group has been discharged and can be put into operation again. The controller compares the discharge time of each responsive filter group with the preset discharge time, and can screen the responsive filter groups.

[0113] When the discharge time is less than or equal to the preset discharge time, it indicates that the responsive filter group has not been fully discharged, that is, the responsive filter group has not been fully restored, and the responsive filter group should be avoided at this time. Therefore, the controller will filter out the responsive filter group with a discharge time longer than the preset discharge time, mark it as a discharged filter group, and only use the discharged filter group as the data in the input sequence in the subsequent sorting.

[0114] Step 704, sorting the discharged filter groups according to the input time to obtain an input sequence.

[0115] Specifically, the controller sorts the discharged filter groups according to the input time of each discharged filter group based on the screening. The discharged filter groups are sorted in ascending order according to the input time value, that is, the responsive filter groups with smaller input time values ​​are sorted earlier, and the responsive filter groups with larger input time values ​​are sorted later. The discharged filter groups are arranged in this way to obtain the input sequence.

[0116] Step 604: determine the target filter group based on the input instruction and the input sequence, and control the input of the target filter group.

[0117] Specifically, the controller selects a responsive filter group from the input sequence according to the order based on the input action requirements in the input instruction and the number of filter groups that need to be connected to the power network, and determines the target filter group. For example, when the number of filter groups that need to be input in the input instruction is 3, the controller selects the top three responsive filter groups from the input sequence as the target filter group. After obtaining the target filter group, the controller controls the target filter group to switch from the cut-off state to the input state to complete the operation control.

[0118] In this embodiment, in response to the input instruction, the controller selects the responsive filter group from each available filter group, obtains the input time and discharge time of each responsive filter group, obtains the discharged filter group by the discharge time, and then sorts the discharged filter group according to the length of the input time, controls according to the obtained input sequence, determines the target filter group and controls the target filter group to switch from the cut-off state to the input state. By analyzing the input time and discharge time of each filter group, under the premise of satisfying the discharge completion, the filter group with a shorter input time is preferentially controlled to be input, which can effectively ensure that each filter group participates in the operation of the DC converter station, and makes the input time of each filter group uniform, which is conducive to improving the participation of different filter groups, which is equivalent to improving the utilization rate of the equipment.

[0119] Based on the same technical concept, the present application also provides a DC converter station filter operation control system, such as Figure 1As shown, the DC converter station filter operation control system includes a controller 102 and a plurality of timers 104. The timers 104 are respectively arranged in each filter group of the DC converter station and connected to the controller 102. The controller 102 is connected to each filter group of the DC converter station. Among them, each filter group of the DC converter station can adjust the operation of the DC converter station by adjusting the switching state. The switching state of the filter group includes an input state and a cut-off state. The filter group in the input state is connected to the power network in the DC converter station and participates in the operation; the filter group in the cut-off state is disconnected from the power network in the DC converter station and does not participate in the operation.

[0120] The timer 104 is used to record the input duration when the corresponding filter group enters the input state, and to record the discharge duration when the corresponding filter group enters the cut-off state. Each timer 104 sends both the input duration and the discharge duration to the controller 102, and the controller 102 is used to control each filter group based on the method described in each embodiment of the present application.

[0121] The timer 104 is a device capable of recording time. The filter group set in the DC converter station can be triggered to start or stop timing due to the mechanical structure change or circuit parameter change caused by the switching action of the filter group, or can be started or stopped under the control of the controller 102. Optionally, when the number of filter groups in the DC converter station is n, the number of timers 104 can be n, so that each filter group is correspondingly provided with a timer 104; the number of timers 104 can also be 2n, so that each filter group is correspondingly provided with two timers 104, one of which is used to record the input time when the filter group enters the input state, and send the input time of the filter group to the controller 102; the other is used to record the discharge time each time the filter group enters the cut-off state, and send the discharge time of the filter group to the controller 102. Among them, the input time can be accumulated, which is the accumulated working time of the filter group, and is not cleared when the filter is in the cut-off state; the discharge time cannot be accumulated, which is the single discharge time of the filter group, and is cleared when the filter is in the input state.

[0122] Taking the start and stop of the timer 104 controlled by the controller 102 as an example, the following is an exemplary explanation: when a filter group in the DC converter station filter operation control system is switched from the cut-off state to the put-in state, the controller 102 controls the timer 104 responsible for recording the put-in time of the filter group to start, starts timing based on the previous working time, and feeds back the put-in time obtained by timing to the controller 102. At the same time, the controller 102 controls the timer 104 responsible for recording the discharge time of the filter group to pause and reset, and ends the recording of this discharge time. If the number of timers 104 corresponding to the filter group is one, that is, the timer 104 responsible for recording the put-in time and the timer 104 responsible for recording the discharge time are the same timer 104, then the controller 102 can control the counter to perform timing in different states when the switching state of the filter group changes, so as to record the put-in time and discharge time of the filter group.

[0123] It should be noted that for a filter group, the switched-on state and the switched-off state cannot exist at the same time, and there is a mutually exclusive relationship, so a filter group can only have one of the switched-on time or the switched-off time at the same time. A DC converter station includes multiple filter groups, and the switching states of each filter group can be different. Then the DC converter station can include filter groups in the switched-on state and filter groups in the switched-off state at the same time.

[0124] The controller 102 controls the operation of the DC converter station by switching each filter group between the input state and the removed state. Specifically, the controller 102 can obtain the input time and discharge time of each filter group as described above, control the filter group according to the DC converter station filter operation control method described in this application, and then adjust the operation of the DC converter station.

[0125] In order to better understand the above solution, a detailed explanation is given below in conjunction with a specific embodiment.

[0126] The DC converter station filter operation control system includes a controller and multiple timers. The timers are respectively set in each filter group of the DC converter station and connected to the controller. The controller is connected to each filter group of the DC converter station. The operation control logic is as follows: Figure 8As shown, the operating status of the filter group (group filter) includes the maintenance status (overhaul status) and the switching status (operation signal). The overhaul status includes the state without maintenance (non-maintenance signal) and the state requiring maintenance (overhaul signal, not shown in the figure). The operation signal is expressed by the rising edge (input state) and the falling edge (cut-off state), and logical judgment is performed by triggering different signals. When the non-maintenance signal and the rising edge trigger enter the logic AND gate, the operation timer T_ON corresponding to the group filter is started, and the discharge timer T_OFF corresponding to the group filter is paused and cleared. When the non-maintenance signal and the falling edge trigger enter the logic AND gate, the operation timer T_ON corresponding to the group filter is paused, and the discharge timer T_OFF corresponding to the group filter is started.

[0127] The following is an example of a method for controlling the operation of a DC converter station filter:

[0128] 1. Collect the maintenance status of all AC filters in the DC converter station, including maintenance signals and non-maintenance signals. Collect the operation signals of all AC filters in the DC converter station.

[0129] 2. When the DC converter station filter operation control system receives a valid non-maintenance signal of a group of AC filters (the maintenance status flag is 0) and the operation signal changes from 0 to 1 (rising edge trigger), the operation timer T_ONx (x=1,2,...n) of the group filter is started, and the discharge timer T_OFFx (x=1,2,...n) of the group filter is paused and cleared.

[0130] 3. When the DC converter station filter operation control system receives a valid non-maintenance signal of a group of AC filters and the operation signal changes from 1 to 0 (falling edge triggered), the operation timer T_ONx (x=1,2,...n) of the group filter is suspended, and the discharge timer T_OFFx (x=1,2,...n) of the group filter is started at the same time.

[0131] 4. When the controller receives a non-maintenance signal from a group of AC filters and the operation signal is 0, it is determined that the group of filters meets the first criterion.

[0132] 5. When the controller determines that the discharge time of a small group of filters is greater than the set discharge time, that is, the comparator is used to compare T_OFFx (x=1,2,...n)>T_SET, it is determined that the small group of filters meets the second criterion.

[0133] 6. When both criterion 1 and criterion 2 are satisfied at the same time, the operation timers of the small group filters satisfying the aforementioned criteria are sorted in ascending order, and the first ranked one, i.e., the small group filter with the shortest operation time, is output.

[0134] 7. When receiving the filter activation instruction, activate the filter group with the first ranking (shortest running time).

[0135] 8. When the controller receives a non-maintenance signal from a group of AC filters and the operation signal is 1, it is determined that the group of filters meets the third criterion.

[0136] 9. When criterion three is met, the operating timers of the small group filters that meet criterion three are sorted in descending order, and the small group filter that ranks first is output.

[0137] 10. When a filter removal instruction is received, the filter group with the highest ranking, i.e. the filter with the longest running time, is removed.

[0138] The following five scenarios are used as examples to illustrate the specific implementation of the DC converter station filter operation control method:

[0139] (1) Scenario 1: A small group of filters is under maintenance and all criteria are not met. This group of filters does not participate in the control method.

[0140] (2) Scenario 2: A small group of filters is in a non-maintenance state, and the operating state switches from 0 to 1, that is, it is put into operation. The DC converter station filter operation control system starts the operation timer corresponding to the small group of filters, records the operating time of the small group of filters, and pauses and clears the discharge timer of the small group of filters. When the operating state of the small group of filters switches from 1 to 0 at a certain moment, that is, it exits operation, the DC converter station filter operation control system pauses the operation timer of the small group of filters and starts the discharge timer of the small group of filters.

[0141] (3) Scenario 3: The DC converter station filter operation control system sorts the filter operation counters of the non-maintenance state and the operation state 1 in descending order in real time, and outputs the filter group with the longest operation time. When receiving the filter removal instruction, the filter group is removed. After the removal is completed, the control system re-sorts the filter in descending order and re-outputs the filter group with the longest operation time.

[0142] (4) Scenario 4: A small group of filters is in a non-maintenance state and the operating state is 0, but the discharge timer is less than the set value, which does not meet the second criterion and does not participate in this control method.

[0143] (5) Scenario 5: The control system sorts the operation counters of the sub-filters in non-maintenance state, operation state 0 and discharge timer greater than the set value in ascending order in real time, and outputs the sub-filter with the shortest operation time. When receiving the filter input instruction, the sub-filter is put into operation, and after the input is completed, the sub-filter is re-sorted in ascending order, and the sub-filter with the shortest operation time is output again.

[0144] In this embodiment, by optimizing the judgment logic of the switching order of the filter groups in the DC converter station, the switching order of the group filters can be dynamically adjusted according to factors such as the filter group operation status, maintenance status, and discharge removal time, thereby achieving a dynamic balance in the operation of the filter groups in the DC converter station and improving equipment utilization.

[0145] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0146] Based on the same inventive concept, the embodiment of the present application also provides a DC converter station filter operation control device for implementing the DC converter station filter operation control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations of one or more DC converter station filter operation control device embodiments provided below can refer to the limitations of the DC converter station filter operation control method above, and will not be repeated here.

[0147] In an exemplary embodiment, Fig. 9 As shown, a DC converter station filter operation control device is provided, including: a detection module 920, an operation screening module 940 and a switching control module 960, wherein:

[0148] The detection module 920 is used to obtain the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0149] Running a screening module 940 for determining an available filter group from each filter group based on a maintenance status;

[0150] The switching control module 960 is used to determine, in response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and to perform operation control on the responsive filter group.

[0151] In one embodiment, the switching instruction includes a cutting instruction, and the switching state corresponding to the cutting instruction is the on-state. The switching control module 960 is also used to respond to the cutting instruction, determine from the available filter groups that the switching state is the on-state as a responsive filter group, obtain the on-time of each responsive filter group, and control the operation of each responsive filter group according to the on-time and the cutting instruction.

[0152] In one embodiment, the switching control module 960 is further used to sort the responsive filter groups according to the input duration to obtain a cut-off sequence; in the cut-off sequence, the input duration of the previous responsive filter group is greater than or equal to the input duration of the next responsive filter group. Based on the cut-off instruction and the cut-off sequence, the target filter group is determined, and the cut-off of the target filter group is controlled.

[0153] In one embodiment, the switching instruction includes an input instruction, and the switching state corresponding to the input instruction is a cut-off state. The switching control module 960 is also used to respond to the input instruction, determine from the available filter groups that the switching state is the cut-off state as a responsive filter group, obtain the input time and discharge time of each responsive filter group, and control the operation of each responsive filter group according to the input time, discharge time and input instruction.

[0154] In one embodiment, the switching control module 960 is further used to sort the responsive filter groups according to the input duration and the discharge duration to obtain an input sequence; in the input sequence, the input duration of the previous responsive filter group is less than or equal to the input duration of the next responsive filter group. Based on the input instruction and the input sequence, the target filter group is determined, and the input of the target filter group is controlled.

[0155] In one embodiment, the switching control module 960 is further used to compare the discharge duration with the preset discharge duration, determine the responsive filter group whose discharge duration is greater than the preset discharge duration as the discharged filter group, and sort the discharged filter groups according to the input duration to obtain the input sequence.

[0156] Each module in the above-mentioned DC converter station filter operation control device can be implemented in whole or in part by software, hardware and their combination. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0157] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Fig.10As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a method for controlling the operation of a DC converter station filter is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0158] Those skilled in the art will understand that Fig.10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0159] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0160] Obtaining the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0161] determining an available filter bank from among the filter banks based on a maintenance status;

[0162] In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

[0163] In one embodiment, the switching instruction includes a removal instruction, and the switching state corresponding to the removal instruction is an input state. When the processor executes the computer program, the following steps are further implemented:

[0164] In response to the removal instruction, the available filter groups whose switching state is the on-state are determined as the responsive filter groups from the available filter groups, the on-time of each responsive filter group is obtained, and the operation of each responsive filter group is controlled according to the on-time and the removal instruction.

[0165] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0166] The responsive filter groups are sorted according to the input duration to obtain a removal sequence; in the removal sequence, the input duration of the previous responsive filter group is greater than or equal to the input duration of the next responsive filter group. Based on the removal instruction and the removal sequence, the target filter group is determined, and the removal of the target filter group is controlled.

[0167] In one embodiment, the switching instruction includes an input instruction, and the switching state corresponding to the input instruction is a cut-off state. When the processor executes the computer program, the following steps are further implemented:

[0168] In response to the input instruction, the available filter groups whose switching state is the cut-off state are determined as the responsive filter groups from the available filter groups, the input time and the discharge time of each responsive filter group are obtained, and the operation of each responsive filter group is controlled according to the input time, the discharge time and the input instruction.

[0169] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0170] The responsive filter groups are sorted according to the input duration and the discharge duration to obtain an input sequence; in the input sequence, the input duration of the previous responsive filter group is less than or equal to the input duration of the next responsive filter group. Based on the input instruction and the input sequence, the target filter group is determined, and the input of the target filter group is controlled.

[0171] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0172] The discharge time is compared with the preset discharge time, and the responsive filter group whose discharge time is longer than the preset discharge time is determined as the discharge-completed filter group. The discharge-completed filter groups are sorted according to the input time to obtain the input sequence.

[0173] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0174] Obtaining the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0175] determining an available filter group from among the filter groups based on a maintenance status;

[0176] In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

[0177] In one embodiment, the switching instruction includes a removal instruction, the switching state corresponding to the removal instruction is the input state, and when the computer program is executed by the processor, the following steps are further implemented:

[0178] In response to the removal instruction, the available filter groups whose switching state is the on-state are determined as the responsive filter groups from the available filter groups, the on-time of each responsive filter group is obtained, and the operation of each responsive filter group is controlled according to the on-time and the removal instruction.

[0179] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0180] The responsive filter groups are sorted according to the input duration to obtain a removal sequence; in the removal sequence, the input duration of the previous responsive filter group is greater than or equal to the input duration of the next responsive filter group. Based on the removal instruction and the removal sequence, the target filter group is determined, and the removal of the target filter group is controlled.

[0181] In one embodiment, the switching instruction includes an input instruction, the switching state corresponding to the input instruction is a cut-off state, and when the computer program is executed by the processor, the following steps are further implemented:

[0182] In response to the input instruction, the available filter groups whose switching state is the cut-off state are determined as the responsive filter groups from the available filter groups, the input time and the discharge time of each responsive filter group are obtained, and the operation of each responsive filter group is controlled according to the input time, the discharge time and the input instruction.

[0183] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0184] The responsive filter groups are sorted according to the input duration and the discharge duration to obtain an input sequence; in the input sequence, the input duration of the previous responsive filter group is less than or equal to the input duration of the next responsive filter group. Based on the input instruction and the input sequence, the target filter group is determined, and the input of the target filter group is controlled.

[0185] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0186] The discharge time is compared with the preset discharge time, and the responsive filter group whose discharge time is longer than the preset discharge time is determined as the discharge-completed filter group. The discharge-completed filter groups are sorted according to the input time to obtain the input sequence.

[0187] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0188] Obtaining the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status;

[0189] determining an available filter bank from among the filter banks based on a maintenance status;

[0190] In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

[0191] In one embodiment, the switching instruction includes a removal instruction, the switching state corresponding to the removal instruction is the input state, and when the computer program is executed by the processor, the following steps are further implemented:

[0192] In response to the removal instruction, the available filter groups whose switching state is the on-state are determined as the responsive filter groups from the available filter groups, the on-time of each responsive filter group is obtained, and the operation of each responsive filter group is controlled according to the on-time and the removal instruction.

[0193] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0194] The responsive filter groups are sorted according to the input duration to obtain a removal sequence; in the removal sequence, the input duration of the previous responsive filter group is greater than or equal to the input duration of the next responsive filter group. Based on the removal instruction and the removal sequence, the target filter group is determined, and the removal of the target filter group is controlled.

[0195] In one embodiment, the switching instruction includes an input instruction, the switching state corresponding to the input instruction is a cut-off state, and when the computer program is executed by the processor, the following steps are further implemented:

[0196] In response to the input instruction, the available filter groups whose switching state is the cut-off state are determined as the responsive filter groups from the available filter groups, the input time and the discharge time of each responsive filter group are obtained, and the operation of each responsive filter group is controlled according to the input time, the discharge time and the input instruction.

[0197] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0198] The responsive filter groups are sorted according to the input duration and the discharge duration to obtain an input sequence; in the input sequence, the input duration of the previous responsive filter group is less than or equal to the input duration of the next responsive filter group. Based on the input instruction and the input sequence, the target filter group is determined, and the input of the target filter group is controlled.

[0199] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0200] The discharge time is compared with the preset discharge time, and the responsive filter group whose discharge time is longer than the preset discharge time is determined as the discharge-completed filter group. The discharge-completed filter groups are sorted according to the input time to obtain the input sequence.

[0201] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0202] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0203] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for controlling the operation of a filter in a DC converter station, characterized in that: The method comprises: Acquiring the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status; determining an available filter group from each of the filter groups based on the maintenance status; In response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction is determined from the available filter groups, and the operation of the responsive filter group is controlled.

2. The method according to claim 1, characterized in that The switching instruction includes a removal instruction, the switching state corresponding to the removal instruction is an input state, and in response to the switching instruction, determining a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and performing operation control on the responsive filter group, including: In response to the cut-off instruction, determining the available filter group whose switching state is in the engaged state from the available filter groups as the responsive filter group; Obtaining the input duration of each of the responsive filter groups; The operation of each of the responsive filter groups is controlled according to the input time and the cut-off instruction.

3. The method according to claim 2, characterized in that The step of controlling the operation of each of the responsive filter groups according to the input duration and the cut-off instruction includes: The responsive filter groups are sorted according to the input duration to obtain a cut-off sequence; in the cut-off sequence, the input duration of the previous responsive filter group is greater than or equal to the input duration of the next responsive filter group; Based on the cutting instruction and the cutting sequence, a target filter group is determined, and the cutting of the target filter group is controlled.

4. The method according to claim 1, characterized in that: The switching instruction includes an input instruction, the switching state corresponding to the input instruction is a cut-off state, and in response to the switching instruction, determining a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and performing operation control on the responsive filter group, including: In response to the input instruction, determining the available filter group whose switching state is the cut-off state from the available filter groups as the responsive filter group; Obtaining the input duration and discharge duration of each of the responsive filter groups; The operation of each of the responsive filter groups is controlled according to the input time, the discharge time and the input instruction.

5. The method according to claim 4, characterized in that The step of controlling the operation of each of the responsive filter groups according to the input duration, the discharge duration and the input instruction comprises: The responsive filter groups are sorted according to the input duration and the discharge duration to obtain an input sequence; in the input sequence, the input duration of the previous responsive filter group is less than or equal to the input duration of the next responsive filter group; Based on the input instruction and the input sequence, a target filter group is determined, and input of the target filter group is controlled.

6. The method according to claim 5, characterized in that The step of sorting the responsive filter groups according to the input duration and the discharge duration to obtain an input sequence comprises: Compare the discharge time with a preset discharge time, and determine that the responsive filter group whose discharge time is longer than the preset discharge time is a discharged filter group; The discharged filter groups are sorted according to the input duration to obtain an input sequence.

7. A DC converter station filter operation control device, characterized in that: The device comprises: A detection module, used to obtain the operating status of each filter group of the DC converter station; the operating status includes switching status and maintenance status; Running a screening module for determining an available filter group from each of the filter groups based on the maintenance status; The switching control module is used for determining, in response to the switching instruction, a responsive filter group whose switching state corresponds to the switching instruction from the available filter groups, and performing operation control on the responsive filter group.

8. A DC converter station filter operation control system, characterized in that: The DC converter station filter operation control system includes a controller and a plurality of timers, wherein the timers are respectively arranged at each filter group of the DC converter station and connected to the controller, and the controller is connected to each filter group of the DC converter station; The timer is used to record the input time when the corresponding filter group enters the input state, and to record the discharge time when the corresponding filter group enters the cut-off state; Each of the timers sends the input duration and the discharge duration to the controller, and the controller is used to control each of the filter groups based on the method described in any one of claims 1-6.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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