A control method and device for high voltage DC single-pole locking fast switching filter

Abstract

The present invention discloses a control method and device for a high-voltage direct current single-pole locking fast-cut filter, comprising: when a single-pole abnormal locking occurs during high-voltage direct current bipolar operation, obtaining the filter configuration required for the normal operation of another operating pole, wherein the filter configuration includes the filter type and the corresponding number; according to the reactive power balance principle, according to the configuration of the filter required for the other operating pole, and in combination with the configuration of the filter already put into operation, obtaining the type and number of filters to be removed; removing the filters to be removed after a preset time interval of the single-pole abnormal locking. According to the reactive power balance principle, when a single-pole abnormal locking occurs, by obtaining the filter configuration required for the normal operation of another operating pole, and according to the configuration of the filter already put into operation, obtaining the type and number of filters to be removed, the redundant filters are removed in a short time, thereby avoiding the risk of equipment damage and system instability caused by excessive AC voltage due to excess reactive power in the AC system.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current power transmission control, and in particular to a control method and device for a high-voltage direct current single-pole locking fast-cut filter. Background Art

[0002] With the development of domestic DC transmission project construction, the power transmission capacity of a single DC line is getting larger and larger. When a single-pole abnormal lockout occurs during DC bipolar operation, the maximum possible loss of DC operating power is half. Since the reactive power control strategy cuts off the filter slowly, it will cause a short-term reactive power surplus. If UHV DC transmits large-scale new energy, the short-term reactive power surplus caused by single-pole lockout may cause serious overvoltage in the AC system, which may cause equipment damage and affect the stable operation of the system. At present, the problem of how to quickly cut off the redundant filter after single-pole lockout without over-cutting the filter is still under research and discussion in China. Summary of the invention

[0003] The purpose of the embodiment of the present invention is to provide a high-voltage DC single-pole locked fast-cut filter control method and device. According to the reactive power balance principle, when a single pole is abnormally locked, the filter configuration required for the normal operation of another pole is obtained, and according to the filter configuration that has been put into use, the type and number of filters that need to be cleared are obtained, thereby realizing one-time removal of redundant filters in a short time, avoiding the risk of excessive AC voltage caused by excess reactive power in the AC system, resulting in damage to equipment and unstable operation of the system.

[0004] In order to solve the above technical problems, a first aspect of an embodiment of the present invention provides a high voltage DC single-pole locking fast switching filter control method, comprising the following steps:

[0005] When a single-pole abnormal lockout occurs during high-voltage direct current bipolar operation, a filter configuration required for the normal operation of another operating pole is obtained, wherein the filter configuration includes a filter type and a corresponding number;

[0006] According to the reactive power balance principle, according to the configuration of the filter required by the other operating pole, and in combination with the configuration of the filter already put into use, the type and quantity of the filter to be removed are obtained;

[0007] After a preset time interval of the single-pole abnormal lockout, the filter to be removed is removed through a filter removal instruction.

[0008] Further, the obtaining of another filter configuration required for normal operation of the pole includes:

[0009] Obtaining a DC power value of the other active pole;

[0010] The minimum number of filters required is calculated according to the DC power value of the other active pole.

[0011] Furthermore, the configuration of the filter required by the other operating pole and the configuration of the filter already put into use are combined to obtain the type and quantity of the filter to be removed, including:

[0012] Calculating the reactive power output value provided by the corresponding filter according to the required filter configuration;

[0013] Calculating the reactive power value consumed by the other operating converter, and obtaining a reactive power excess value according to the reactive output value provided by the required filter;

[0014] According to the excess reactive power value, the type and quantity of the filters to be retained in addition to the required number of filters are calculated, thereby obtaining the type and quantity of the filters to be removed.

[0015] Furthermore, the reactive power output value provided by the required filter is:

[0016] Q' ACF =N'×MAX(Q A ,Q B ,Q C ),

[0017] Where N' is the number of filters required and Q A is the maximum rated output of filter A, Q B is the maximum rated output of filter B, Q C is the maximum rated output of filter C.

[0018] Further, the reactive power excess value obtained according to the reactive output value provided by the required filter is:

[0019]

[0020] Among them, Q OVERLOAD is the reactive power excess value, Q' P2_ACT is the reactive power consumed by the other active converter, Q' ACF The reactive output value provided for the required filter.

[0021] Furthermore, the number of filters to be retained is:

[0022] N”=Q OVERLOAD / MAX(Q A ,Q B ,Q C ),

[0023] Among them, Q OVERLOAD is the reactive power excess value, QA is the maximum rated output of filter A, Q B is the maximum rated output of filter B, Q C is the maximum rated output of filter C.

[0024] Accordingly, a second aspect of an embodiment of the present invention provides a high voltage DC single-pole locking fast switching filter control device, comprising:

[0025] An acquisition module, which is used to acquire the filter configuration required for the normal operation of another operating pole when a single-pole abnormal lockout occurs during the high-voltage direct current bipolar operation, wherein the filter configuration includes the filter type and the corresponding quantity;

[0026] A calculation module, which is used to obtain the type and quantity of the filter to be removed according to the reactive power balance principle, the configuration of the filter required by the other operating pole, and the configuration of the filter already put into use;

[0027] The control module is used to cut off the filter to be cut off through a filter cutting instruction after a preset time interval of the single-pole abnormal locking.

[0028] Furthermore, the acquisition module includes:

[0029] An acquisition unit, used for acquiring a DC power value of the other active pole;

[0030] The first calculation unit is used for calculating the minimum number of filters required according to the DC power value of the other active pole.

[0031] Furthermore, the calculation module includes:

[0032] A second calculation unit, which is used to calculate the reactive power output value provided by the corresponding filter according to the required filter configuration;

[0033] a third calculation unit, which is used to calculate the reactive power value consumed by the other operating converter, and obtain a reactive power excess value according to the reactive output value provided by the required filter;

[0034] A fourth calculation unit is used to calculate the type and quantity of the filters that need to be retained in addition to the required number of filters based on the excess reactive power value, and then obtain the type and quantity of the filters that need to be removed.

[0035] Accordingly, a third aspect of an embodiment of the present invention provides an electronic device, comprising: at least one processor; and a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the one processor, and the instructions are executed by the one processor so that the at least one processor executes the above-mentioned high-voltage DC single-pole locked fast-cutting filter control method.

[0036] Correspondingly, a fourth aspect of an embodiment of the present invention provides a computer-readable storage medium on which computer instructions are stored, and when the instructions are executed by a processor, the above-mentioned smart substation multi-bay system-level protection function detection method is implemented.

[0037] The above technical solution of the embodiment of the present invention has the following beneficial technical effects:

[0038] Based on the reactive power balance principle, when a single pole is abnormally locked, the filter configuration required for the normal operation of the other pole is obtained, and the type and number of filters that need to be removed are obtained based on the filter configuration that has been put into use, thereby achieving a one-time removal of redundant filters in a short period of time, avoiding the risk of excessive AC voltage caused by excess reactive power in the AC system, resulting in damage to equipment and unstable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a flow chart of a high-voltage DC single-pole locking fast-switching filter control method provided by an embodiment of the present invention;

[0040] Figure 2 It is a block diagram of a high-voltage DC single-pole locking fast-cut filter control device module provided by an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of an acquisition module provided in an embodiment of the present invention;

[0042] Figure 4 It is a schematic diagram of a calculation module provided in an embodiment of the present invention.

[0043] Reference numerals:

[0044] 1. Acquisition module, 11. Acquisition unit, 12. First calculation unit, 2. Calculation module, 21. Second calculation unit, 22. Third calculation unit, 23. Fourth calculation unit, 3. Control module. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0046] Figure 1 It is a flow chart of a high-voltage DC single-pole locking fast-switching filter control method provided by an embodiment of the present invention.

[0047] Please refer to Figure 1 A first aspect of an embodiment of the present invention provides a high voltage DC single-pole locking fast switching filter control method, comprising the following steps:

[0048] S100, when a single-pole abnormal lockout occurs during the high-voltage direct current bipolar operation, a filter configuration required for the other operating pole to operate normally is obtained, wherein the filter configuration includes a filter type and a corresponding quantity.

[0049] S200, according to the reactive power balance principle, according to the configuration of the filter required by another operating pole, and in combination with the configuration of the filter already put into use, the type and quantity of the filter to be removed are obtained.

[0050] S300, after a preset time interval of single-pole abnormal locking, the filter to be removed is removed through a filter removal instruction.

[0051] The above control method is based on the reactive power balance principle. When a single pole is abnormally locked, the filter configuration required for the normal operation of the other pole is obtained, and the type and number of filters that need to be removed are obtained based on the filter configuration that has been put into use. The redundant filters are removed once within 100 milliseconds, avoiding the risk of equipment damage and system instability caused by excessive AC voltage due to excess reactive power in the AC system.

[0052] Table 1 is the absolute minimum filter control data table. As shown in Table 1, the data table of the absolute minimum filter control of the reactive control function is shown in Table 1. The LEVEL column represents different filter configuration levels; the filter A, filter B, and filter C columns represent the number of each filter type required in different filter configuration levels; the DC power represents the DC power points of different absolute minimum filter controls. Different DC powers correspond to the types and numbers of AC filter configurations required. The specific corresponding method is that when the DC power P>PX (X=1, 2, 3), the corresponding required filter configuration is the filter type and number marked in the row of LEVELX+1.

[0053]

[0054] Specifically, in step S200, obtaining the filter configuration required for the normal operation of another pole includes:

[0055] S210, obtaining a DC power value of another active pole.

[0056] Specifically, take the bipolar operation as an example, after the abnormal blocking of pole 1 and the normal operation of pole 2. After the blocking of pole 1, the current reference value of pole 2 and the calculated power reference value are considered in the following two operating conditions:

[0057] Working condition 1: Pole 2 bipolar power mode operation, the bipolar power reference value before pole 1 blocking is P REF , the reference value of the current of pole 2 is I P2_REF , the actual voltage value of pole 2 is U P2_ACT , the calculated DC power of pole 2 is P 2_CAL , the reactive power consumed by the current transformer at pole 2 is Q P2_ACT ; The reference value of pole 2 current calculated after pole 1 is locked is I' P2_REF , the actual voltage value of pole 2 is U' P2_ACT , the calculated DC power of pole 2 is P' 2_ACL , the reactive power consumed by the commutation transformer calculated for pole 2 is Q' P2_ACT ; The power level corresponding to the 2-hour overload is P' 2_CAP , the current level corresponding to the 2-hour overload is I 2_CAP .

[0058] Considering that the actual voltage value of pole 2 remains basically unchanged before and after pole 1 is locked, then:

[0059] U P2_ACT =U' P2_ACT ,

[0060] The corresponding relationship between the power level and current level of the extreme 2-hour overload is as follows:

[0061] I 2_CAP =P 2_CAP / U P2_ACT ,

[0062] Pole 2 current reference value I' calculated after pole 1 is blocked P2_REF The selection logic is as follows:

[0063]

[0064] The DC power logic of pole 2 calculated before and after pole 1 blocking is as follows:

[0065] P 2_CAL =U P2_ACT ×I P2_REF ,

[0066] P' 2_CAL =U P2_ACT ×I' P2_REF ,

[0067] Considering that the ratio coefficient of active and reactive power of the commutation transformer is basically fixed, the reactive power consumed by the commutation transformer of pole 2 after pole 1 is blocked is calculated as follows:

[0068] Q' P2_ACT =P' 2_CAL ×Q P2_ACT / P 2_CAL .

[0069] Working condition 2: Pole 2 unipolar current or unipolar power mode operation, the reference value of pole 2 current before pole 1 is locked is I P2_REF , the actual voltage value of pole 2 is U P2_ACT , the calculated DC power of pole 2 is P 2_CAL , the reactive power consumed by the current transformer at pole 2 is Q P2_ACT ; The reference value of pole 2 current calculated after pole 1 is locked is I' P2_REF , the actual voltage value of pole 2 is U' P2_ACT , the calculated DC power of pole 2 is P' 2_ACL , the reactive power consumed by the commutation transformer calculated for pole 2 is Q' P2_ACT .

[0070] Considering that the actual voltage value of pole 2 remains basically unchanged before and after pole 1 is locked, then:

[0071] U P2_ACT =U' P2_ACT ,

[0072] The corresponding logic of the pole 2 current reference value and the calculated DC power before and after pole 1 is locked is as follows:

[0073] I' P2_REF =I P2_REF ,

[0074] P' 2_CAL =P 2_CAL ,

[0075] Considering that the ratio coefficient of active and reactive power of the commutation transformer is basically fixed, the reactive power consumed by the commutation transformer of pole 2 after pole 1 is blocked is calculated as follows:

[0076] Q' P2_ACT =P' 2_CAL ×Q P2_ACT / P 2_CAL =Q P2_ACT .

[0077] S220, calculating the minimum number of filters required according to the DC power value of another active pole.

[0078] Specifically, in step S300, the type and quantity of filters to be removed are obtained based on the configuration of the filter required by another operating pole and the configuration of the filters already put into operation, including:

[0079] S310, calculating the reactive power value provided by the corresponding filter according to the required filter configuration.

[0080] S320, calculating the reactive power value consumed by another operating converter, and obtaining the reactive power excess value according to the reactive output value provided by the required filter.

[0081] S330, calculating the type and number of filters that need to be retained in addition to the required number of filters based on the excess reactive power value, and then obtaining the type and number of filters that need to be removed.

[0082] Furthermore, the reactive power output value provided by the required filter is:

[0083] Q' ACF =N'×MAX(Q A ,Q B ,Q C ),

[0084] Where N' is the number of filters required and Q A is the maximum rated output of filter A, Q B is the maximum rated output of filter B, Q C is the maximum rated output of filter C.

[0085] Furthermore, the reactive power excess value is obtained according to the reactive output value provided by the required filter:

[0086]

[0087] Among them, Q OVERLOAD is the excess reactive power value, Q' P2_ACT is the reactive power consumed by the other inverter in operation, Q' ACF The reactive power output value provided by the required filter.

[0088] Furthermore, the number of filters to be retained is:

[0089] N”=Q OVERLOAD / MAX(Q A ,Q B ,Q C ),

[0090] Among them, Q OVERLOAD is the excess reactive power value, Q A is the maximum rated output of filter A, Q B is the maximum rated output of filter B, Q C is the maximum rated output of filter C.

[0091] In a specific implementation of the embodiment of the present invention, the steps of the high voltage DC single-stage locking fast switching filter control method are as follows:

[0092] 1) When pole 1 is locked, the currently enabled filter configuration is latched: N A +N B +N C , then the number of filters put into use is N = N A +N B +N C .

[0093] 2) Calculate the reactive power output provided by the currently activated filter when pole 1 is locked:

[0094] Q ACF =N A ×Q A +N B ×Q B +N C ×Q C ,

[0095] 3) Pole 1 is locked based on the DC power P' calculated from pole 2 2_CAL Determine the absolute minimum filter configuration required: N' A +N' B +N' C , then the minimum number of filters required N'=N' A +N' B +N' C , the corresponding absolute minimum filter data table level is NO.N'.

[0096] 4) Calculate the reactive output provided by the provided filter based on the absolute minimum filter configuration required to block pole 1 from pole 2:

[0097] Q' ACF =N'×MAX(Q A ,Q B ,Q C ),

[0098] To avoid overcutting, the filter here provides reactive power calculation with the maximum value of the rated output of filter A, filter B and filter C involved in the calculation.

[0099] 5) Calculate the reactive power value Q' consumed by the pole 1 blocking pole 2 converter P2_ACT .

[0100] 6) System reactive power excess value Q after pole 1 is blocked OVERLOAD Calculation and selection logic:

[0101]

[0102] 7) After pole 1 is locked, calculate the P' according to the system reactive power balance demand 2_CALThe number of filters N" that need to be retained in addition to the corresponding absolute minimum filter configuration is calculated as follows:

[0103] N”=Q OVERLOAD / MAX(Q A ,Q B ,Q C ),

[0104] In order to avoid the problem of overcutting, the number of filters required to be cut off is calculated here using the maximum value of the rated output of filter A, filter B and filter C, and the calculation result needs to be rounded up.

[0105] 8) Calculate the final filter configuration level NO.N"'

[0106] NO.N”'=NO.(N'+N”),

[0107] The filter configuration level NO.N”' corresponds to the filter configuration N”'A+N”'B+N”'C.

[0108] 9) Calculate the filter configuration N that needs to be removed for single-pole blocking OFF

[0109] N OFF =(NN"')A+(NN"')B+(NN"')C.

[0110] 10) Single-pole locking fast-cut filter function activation conditions

[0111] The bipolar unlocking signal disappears, the unipolar unlocking signal is generated, and the unipolar locking fast-cut filter function is started after a delay of △T. The △T time setting principle requires that the filter configuration N to be removed by the unipolar locking fast-cut filter function can be accurately calculated within the time interval. OFF , combined with the anti-false operation consideration of the single-pole locking fast-cut filter function logic judgment, the general setting range is between 50 and 150ms.

[0112] 11) After the activation conditions of the single-pole locking fast-cut filter function are met, the single-pole locking fast-cut filter function is started to cut off the filter configuration N required to be cut off at one time OFF .

[0113] Figure 2 It is a block diagram of a high-voltage DC single-pole locking fast-cut filter control device module provided by an embodiment of the present invention.

[0114] Accordingly, please refer to Figure 2The second aspect of the embodiment of the present invention provides a high-voltage direct current single-pole lockout fast-cut filter control device, comprising: an acquisition module 1, a calculation module 2 and a control module 3. The acquisition module 1 is used to obtain the filter configuration required for the normal operation of the other operating pole when a single-pole abnormal lockout occurs during the high-voltage direct current bipolar operation, wherein the filter configuration includes the filter type and the corresponding quantity. The calculation module 2 is used to obtain the type and quantity of filters to be cut off according to the reactive power balance principle, the configuration of the filter required for the other operating pole, and the configuration of the filters that have been put into use. The control module 3 is used to cut off the filter to be cut off through a filter cut-off instruction after a preset time interval of the single-pole abnormal lockout.

[0115] Figure 3 It is a schematic diagram of an acquisition module provided in an embodiment of the present invention.

[0116] For details, please refer to Figure 3 The acquisition module 1 includes: an acquisition unit 11 and a first calculation unit 12. The acquisition unit 11 is used to acquire the DC power value of another running pole. The first calculation unit 12 is used to calculate the minimum number of filters required according to the DC power value of another running pole.

[0117] Figure 4 It is a schematic diagram of a calculation module provided in an embodiment of the present invention.

[0118] For details, please refer to Figure 4 , the calculation module 2 includes: a second calculation unit 21, a third calculation unit 22 and a fourth calculation unit 23. The second calculation unit 21 is used to calculate the reactive output value provided by the corresponding filter according to the required filter configuration. The third calculation unit 22 is used to calculate the reactive power value consumed by another converter in operation, and obtain the reactive power excess value according to the reactive output value provided by the required filter. The fourth calculation unit 23 is used to calculate the type and number of filters that need to be retained in addition to the required number of filters according to the reactive power excess value, and then obtain the type and number of filters that need to be removed.

[0119] The control device is based on the reactive power balance principle. When a single pole is abnormally locked, it obtains the filter configuration required for the normal operation of the other pole in operation, and obtains the type and number of filters that need to be removed based on the filter configuration that has been put into operation. This realizes the removal of redundant filters in a short period of time, avoiding the risk of equipment damage and system instability caused by excessive AC voltage due to excess reactive power in the AC system.

[0120] Specifically, the reactive output value provided by the required filter is:

[0121] Q' ACF =N'×MAX(Q A ,Q B ,QC ),

[0122] Where N' is the number of filters required and Q A is the maximum rated output of filter A, Q B is the maximum rated output of filter B, Q C is the maximum rated output of filter C.

[0123] Specifically, the excess reactive power value is:

[0124]

[0125] Among them, Q OVERLOAD is the excess reactive power value, Q' P2_ACT is the reactive power consumed by the other inverter in operation, Q' ACF The reactive power output value provided by the required filter.

[0126] Specifically, the number of filters to be retained is:

[0127] N”=Q OVERLOAD / MAX(Q A ,Q B ,Q C ),

[0128] Among them, Q OVERLOAD is the excess reactive power value, Q A is the maximum rated output of filter A, Q B is the maximum rated output of filter B, Q C is the maximum rated output of filter C.

[0129] Accordingly, a third aspect of an embodiment of the present invention provides an electronic device, comprising: at least one processor. And a memory connected to the at least one processor. The memory stores instructions that can be executed by a processor, and the instructions are executed by the processor to enable the at least one processor to execute the above-mentioned high-voltage DC single-pole locking fast-cut filter control method.

[0130] Correspondingly, a fourth aspect of an embodiment of the present invention provides a computer-readable storage medium on which computer instructions are stored, and when the instructions are executed by a processor, the above-mentioned smart substation multi-bay system-level protection function detection method is implemented.

[0131] The embodiment of the present invention aims to protect a high-voltage direct current single-pole lockout fast-cut filter control method and device, wherein the method includes the following steps: when a single-pole abnormal lockout occurs during high-voltage direct current bipolar operation, obtain the filter configuration required for the normal operation of the other operating pole, wherein the filter configuration includes the filter type and the corresponding quantity; based on the reactive power balance principle, based on the configuration of the filter required for the other operating pole, and combined with the configuration of the filter already put into use, obtain the type and quantity of the filter to be cut off; after a preset time interval of the single-pole abnormal lockout, cut off the filter to be cut off through the filter cut-off instruction. The above technical solution has the following effects:

[0132] Based on the reactive power balance principle, when a single pole is abnormally locked, the filter configuration required for the normal operation of the other pole is obtained, and the type and number of filters that need to be removed are obtained based on the filter configuration that has been put into use, thereby achieving a one-time removal of redundant filters in a short period of time, avoiding the risk of excessive AC voltage caused by excess reactive power in the AC system, resulting in damage to equipment and unstable operation of the system.

[0133] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0134] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0135] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1A function specified in one or more boxes.

[0136] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A high voltage DC single-pole locking fast switching filter control method, characterized in that: The steps include: When a single-pole abnormal lockout occurs during high-voltage direct current bipolar operation, a filter configuration required for the normal operation of another operating pole is obtained, wherein the filter configuration includes a filter type and a corresponding number; According to the reactive power balance principle, according to the configuration of the filter required by the other operating pole, and in combination with the configuration of the filter already put into use, the type and quantity of the filter to be removed are obtained; After a preset time interval of the single-pole abnormal lockout, the filter to be removed is removed through a filter removal instruction.

2. The high voltage DC single-pole blocking fast switching filter control method according to claim 1 is characterized in that: The obtaining of the filter configuration required for the normal operation of another pole comprises: Obtaining a DC power value of the other active pole; The minimum number of filters required is calculated according to the DC power value of the other active pole.

3. The high voltage DC single-pole blocking fast switching filter control method according to claim 1, characterized in that: The method of obtaining the type and quantity of the filter to be removed based on the configuration of the filter required by the other operating pole and combining the configuration of the filter already put into operation comprises: Calculating the reactive power output value provided by the corresponding filter according to the required filter configuration; Calculating the reactive power value consumed by the other operating converter, and obtaining a reactive power excess value according to the reactive output value provided by the required filter; According to the excess reactive power value, the type and quantity of the filters to be retained in addition to the required number of filters are calculated, thereby obtaining the type and quantity of the filters to be removed.

4. The high voltage DC single-pole blocking fast switching filter control method according to claim 3 is characterized in that: The reactive power output value provided by the required filter is: , in, is the number of filters required and, is the maximum rated output of filter A, is the maximum rated output of filter B, is the maximum rated output of filter C.

5. The high voltage DC single-pole blocking fast switching filter control method according to claim 3 is characterized in that: The reactive power excess value obtained according to the reactive output value provided by the required filter is: , in, is the reactive power excess value, is the reactive power value consumed by the other active converter, The reactive output value provided for the required filter.

6. The high voltage DC single-pole blocking fast switching filter control method according to claim 3 is characterized in that: The number of filters to be retained is: , in, is the reactive power excess value, is the maximum rated output of filter A, is the maximum rated output of filter B, is the maximum rated output of filter C.

7. A high voltage DC single pole locking fast switching filter control device, characterized in that: include: An acquisition module, which is used to acquire the filter configuration required for the normal operation of another operating pole when a single-pole abnormal lockout occurs during the high-voltage direct current bipolar operation, wherein the filter configuration includes the filter type and the corresponding quantity; A calculation module, which is used to obtain the type and quantity of the filter to be removed according to the reactive power balance principle, the configuration of the filter required by the other operating pole, and the configuration of the filter already put into use; The control module is used to cut off the filter to be cut off through a filter cutting instruction after a preset time interval of the single-pole abnormal locking.

8. The high voltage DC single-pole blocking fast-switching filter control device according to claim 7, characterized in that: The acquisition module comprises: An acquisition unit, used for acquiring a DC power value of the other active pole; The first calculation unit is used for calculating the minimum number of filters required according to the DC power value of the other active pole.

9. The high voltage DC single-pole blocking fast switching filter control device according to claim 7, characterized in that: The calculation module comprises: A second calculation unit, which is used to calculate the reactive power output value provided by the corresponding filter according to the required filter configuration; a third calculation unit, which is used to calculate the reactive power value consumed by the other operating converter, and obtain a reactive power excess value according to the reactive output value provided by the required filter; A fourth calculation unit is used to calculate the type and number of the filters that need to be retained in addition to the required number of filters based on the excess reactive power value, and then obtain the type and number of the filters that need to be removed.

10. An electronic device, characterized in that: include: at least one processor; And a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the one processor, and the instructions are executed by the one processor so that the at least one processor executes the high-voltage DC single-pole locked fast-cut filter control method as described in any one of claims 1-6.

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