Reclosing control method, device and computer equipment in line protection

Abstract

The present application relates to a method, device, and computer equipment for controlling reclosing in line protection. The method comprises: obtaining position message information; the position message information carries the gate position information of the circuit breaker; if the gate position information satisfies a preset condition, obtaining a first duration of the position message information; if the first duration satisfies a preset confirmation time threshold, determining reclosing action information to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information. This method can be used to determine whether to lock the reclosing or not lock the reclosing based on the gate position information received by the protection device. By determining the gate position information and confirming the reclosing action in combination with the time threshold, it can effectively prevent the reclosing from incorrectly operating, and avoid the reclosing malfunction or refusal to operate due to invalid position signals.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a method, device, computer equipment and storage medium for controlling reclosing in line protection. Background Art

[0002] Traditional line protection devices obtain position signals of circuit breakers and isolating switches through hard-wired cables. The protection identification method is simple and has low reliability. Intelligent protection devices use GOOSE communication services and use network transmission instead of traditional cables. GOOSE messages can meet protocol consistency requirements, thereby enhancing reliability.

[0003] However, for intelligent protection devices, the position signal based on GOOSE message transmission has a great impact on the protection logic. When the intelligent protection device receives an invalid position signal, it may affect the normal operation of the reclosing switch and cause the reclosing switch to operate incorrectly. There is a problem that the intelligent protection device may malfunction or refuse to operate the reclosing switch due to invalid position signals. Summary of the invention

[0004] Based on this, it is necessary to provide a method, device, computer equipment and storage medium for controlling reclosing in line protection that can solve the above-mentioned technical problems.

[0005] A reclosing control method in line protection, the method comprising:

[0006] Obtaining location message information; the location message information carries the switch location information of the circuit breaker;

[0007] If the gate position information meets a preset condition, obtaining a first duration of the position message information;

[0008] If the first duration meets a preset confirmation time threshold, the reclosing action information is determined to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information.

[0009] In one embodiment, if the first duration satisfies a preset confirmation time threshold, determining the reclosing action information includes:

[0010] If the first duration meets a preset confirmation time threshold, obtaining reclosing switch charging state information;

[0011] The reclosing action information is determined according to the reclosing charge state information.

[0012] In one embodiment, the reclosing switch charging state information includes a reclosing switch fully charged state and a reclosing switch not fully charged state, and determining the reclosing switch action information according to the reclosing switch charging state information includes:

[0013] If the reclosing switch charging state information indicates that the reclosing switch is fully charged, the unblocked reclosing switch information is used as the reclosing switch action information;

[0014] If the reclosing switch charging state information indicates that the reclosing switch is not fully charged, the locking reclosing switch information is used as the reclosing switch action information.

[0015] In one embodiment, after the step of if the first duration meets a preset confirmation time threshold, the method further includes:

[0016] Generate location status alarm information; the location status alarm information is used to issue an alarm when the location status represented by the location message information is invalid.

[0017] In one embodiment, the obtaining of location message information includes:

[0018] Receive GOOSE message information;

[0019] If there is location virtual terminal information in the GOOSE subscription configuration, the GOOSE message information is used as the location message information;

[0020] Also includes:

[0021] If the location virtual terminal information does not exist in the GOOSE subscription configuration, obtain the second duration of the GOOSE message information;

[0022] If the second duration meets a preset confirmation time threshold, obtaining reclosing switch charging state information;

[0023] According to the reclosing switch charging state information, the reclosing switch action information is determined to control the reclosing switch to perform a locking reclosing switch action or a non-locking reclosing switch action according to the reclosing switch action information.

[0024] In one embodiment, if the gate position information satisfies a preset condition, obtaining the first duration of the position message information includes:

[0025] If the gate position information is not detected as designated valid information, and the gate position information is designated invalid information, obtaining a first duration of the position message information;

[0026] or,

[0027] If the gate position information is not detected as designated valid information and there is preset abnormal information in the position message information, a first duration of the position message information is obtained.

[0028] In one embodiment, after the step of not detecting that the gate position information is designated valid information and the gate position information is designated invalid information, the method further includes:

[0029] Acquire position memory information; the position memory information is stored when it is detected that the previous gate position information of the gate position information is the designated valid information;

[0030] The gate position information is set using the position memory information.

[0031] A reclosing control device for line protection, the device comprising:

[0032] A position message information acquisition module, used to acquire position message information; the position message information carries the switch position information of the circuit breaker;

[0033] A gate position information determination module, configured to obtain a first duration of the position message information if the gate position information satisfies a preset condition;

[0034] The reclosing action information determination module is used to determine the reclosing action information if the first duration meets a preset confirmation time threshold, so as to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information.

[0035] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned reclosing control method in line protection when executing the computer program.

[0036] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the reclosing control method in line protection as described above.

[0037] The above-mentioned method, device, computer equipment and storage medium for controlling reclosing in line protection obtain position message information, which carries the gate position information of the circuit breaker. If the gate position information meets the preset conditions, the first duration of the position message information is obtained. If the first duration meets the preset confirmation time threshold, the reclosing action information is determined to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information, thereby realizing the locking or not locking of the reclosing based on the gate position information received by the protection device, and by determining the gate position information and confirming the reclosing action in combination with the time threshold, it can effectively prevent the reclosing from operating incorrectly, and avoid the reclosing malfunction or refusal to operate due to invalid position signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 An application environment diagram of a reclosing control method in line protection in an embodiment;

[0039] Figure 2 A schematic flow chart of a reclosing control method in line protection in one embodiment;

[0040] Figure 3 A schematic flow chart of a step of determining reclosing action information in one embodiment;

[0041] Figure 4 A schematic diagram of a process for determining a locked reclosing switch in one embodiment;

[0042] Figure 5 It is a structural block diagram of a reclosing control device in line protection in one embodiment;

[0043] Figure 6 The figure is a diagram of the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0044] 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.

[0045] The present application provides a reclosing control method for line protection, which can be applied to Figure 1 In the application environment shown, the intelligent terminal 103 can establish a connection with the circuit breaker 104 through a cable, the intelligent terminal 103 can establish a GOOSE network connection with the switch 102, the switch 102 can establish a GOOSE network connection with the protection device 101, and the protection device 101 can be an intelligent protection device.

[0046] The intelligent terminal 103 can collect information such as the tripping position and closing position of the circuit breaker 104, and can be connected to the tripping and closing circuits of the circuit breaker 104. The intelligent terminal 103 can convert the collected circuit breaker position information into corresponding data and send it to the GOOSE network. The switch 102 can forward the GOOSE message in the GOOSE network to the protection device 101, and then the protection device 101 can receive input quantities such as circuit breaker position information through the GOOSE network, and can send output quantities such as tripping and closing through the GOOSE network.

[0047] In one embodiment, Figure 2 As shown, a reclosing control method for line protection is provided, and the method is applied to Figure 1 Taking the protection device 101 in the embodiment as an example, the invention comprises the following steps:

[0048] Step 201, obtaining position message information; the position message information carries the switch position information of the circuit breaker;

[0049] In practical applications, the protection device in the line can receive position message information through the GOOSE network. The position message information can carry the gate position information of the circuit breaker, and then the protection device can further determine the locking reclosing switch based on the obtained gate position information.

[0050] Specifically, when the protection device has subscribed to the location virtual terminal information, since the GOOSE message received by the protection device through the GOOSE network contains location information, the GOOSE message can be used as location message information, and then by obtaining the location message information, the circuit breaker's switch position information, such as the circuit breaker's tripping position, closing position and other information, can be obtained from the location message information.

[0051] Traditional protection devices obtain the position signals of circuit breakers and isolating switches through hard-wired cables, and each cable core can only transmit the status of one signal. The traditional protection method of distinguishing the tripping position by entering TWJ and the closing position by entering HWJ is relatively simple, and the high-voltage line protection device only receives the tripping position input. When there is a tripping position input, it is in the tripping position state, and when there is no tripping position input, it is in the closing position state. The intelligent protection device adopts GOOSE communication service, using network transmission instead of traditional cables. GOOSE messages can meet the protocol consistency requirements and enhance reliability.

[0052] Because when using intelligent protection devices, the secondary circuit can be replaced by optical cables, switches and configuration logic, and the secondary equipment connection relationship is described based on the secondary system configuration file (such as SCD file), some problems may arise. For example, the secondary virtual terminal circuit cannot be visually visible, making it difficult to control; there is no obvious disconnection point for maintenance and isolation of the secondary circuit; the process layer needs to consider the impact of network storms, port connection errors, illegal message access, CRC message errors, link breaks, frame losses, etc.

[0053] However, for intelligent protection devices, the position signal based on GOOSE message transmission has a great impact on the protection logic, such as the judgment of jump start reclosing and locking reclosing, the alarm judgment of three-phase voltage loss, the judgment of entering full-phase or non-full-phase logic, and the judgment of manual closing and acceleration after reclosing. In actual use scenarios, there are abnormal situations where the intelligent protection device receives invalid position information, and abnormal situations due to the particularity of the GOOSE communication service, and the invalid position status may affect the normal operation of the reclosing.

[0054] In one example, the protection device of the present application can receive position message information, and then based on the switch position information of the circuit breaker carried in the position message information, it can further determine whether to lock the reclosing switch. For example, when abnormal position information is received, it can determine whether to lock the reclosing switch according to the specific situation. When the reclosing conditions are not met, the reclosing switch can be locked. When the reclosing conditions are met, the reclosing switch can be allowed to start reclosing without locking the protection trip, thereby preventing the reclosing switch from operating incorrectly.

[0055] Step 202, if the gate position information meets a preset condition, obtain a first duration of the position message information;

[0056] The preset condition may be that abnormal position information is detected in the gate position information, for example, an abnormal situation in which the position state is invalid exists in the position message information received by the protection device.

[0057] As an example, the first duration may be a duration for receiving the same location message information, for example, a time for the protection device to continuously receive the invalid location status in the location message information.

[0058] After obtaining the gate position information, a judgment can be made based on the gate position information, and then when abnormal position information is detected in the gate position information, the first duration of the position message information can be obtained. For example, when an abnormal situation of invalid position status exists in the received position message information, the protection device can determine the time for continuously receiving the same position message information.

[0059] In one example, since the positions of the circuit breakers and isolating switches of the intelligent protection device are represented by double-point signals, where "01" is the open position, "10" is the closed position, and "00" and "11" are both invalid, that is, when the gate position information in the received position message information is "01" or "10", the gate position information is valid position information, and the corresponding position status is valid; when the gate position information in the received position message information is "00" or "11", the gate position information is invalid position information, and the corresponding position status is invalid.

[0060] In another example, due to the particularity of the intelligent protection using GOOSE communication service, there may be abnormal situations such as failure to receive location information, received location information with maintenance quality, and invalid received data, and the location status is also invalid accordingly.

[0061] Step 203: If the first duration meets a preset confirmation time threshold, determine the reclosing action information to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information.

[0062] In a specific implementation, if the acquired first duration meets the preset confirmation time threshold, the reclosing action information can be determined to control the reclosing action to lock the reclosing action or not lock the reclosing action according to the reclosing action information, thereby realizing that the protection device determines the locking of the reclosing action according to the position information.

[0063] In an optional embodiment, since the control circuit break that occurs during the protection tripping and closing process generally does not exceed 2s, the reclosing charge time is generally 10s to 15s, and the reclosing group reset time is generally 10s, the confirmation time t can range from 10s to 15s, and 15s can be used as the confirmation time threshold.

[0064] In an example, if the acquired first duration does not meet a preset confirmation time threshold, that is, does not meet the confirmation time t, the GOOSE message may continue to be received.

[0065] In an embodiment of the present application, by acquiring position message information, the position message information carries the gate position information of the circuit breaker. If the gate position information satisfies a preset condition, the first duration of the position message information is acquired. If the first duration meets a preset confirmation time threshold, the reclosing action information is determined to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information. This realizes locking or not locking the reclosing based on the gate position information received by the protection device. By determining the gate position information and confirming the reclosing action in combination with the time threshold, it is possible to effectively prevent the reclosing from operating incorrectly, thereby avoiding false operation or refusal to operate the reclosing due to invalid position signals.

[0066] In one embodiment, if the first duration satisfies a preset confirmation time threshold, determining the reclosing action information may include the following steps:

[0067] If the first duration meets a preset confirmation time threshold, obtaining reclosing switch charging state information;

[0068] In practical applications, when the protection device receives invalid position information in the position message information, it can obtain the reclosing switch charging status information when the first duration meets the preset confirmation time threshold to further determine whether the reclosing switch is fully charged.

[0069] For example, when the gate position information in the received position message is "00" or "11", the gate position information is invalid position information, and the corresponding position status is invalid. When the first duration meets the preset confirmation time threshold, the reclosing switch charging status information can be further obtained to determine whether the reclosing switch is fully charged.

[0070] The reclosing action information is determined according to the reclosing charge state information.

[0071] After obtaining the reclosing switch charging status information, it is possible to determine whether the reclosing switch is fully charged based on the reclosing switch charging status information, and then determine the reclosing switch action information based on the judgment result to control the reclosing switch to lock the reclosing switch action or not lock the reclosing switch action according to the reclosing switch action information.

[0072] Specifically, when the gate position information in the received position message is "00" or "11", since its position status is invalid and cannot reflect the actual position status, it is necessary to further judge the charging status of the reclosing switch to determine whether the reclosing conditions are met, and to lock the reclosing switch or not.

[0073] Through the above embodiment, if the first duration meets the preset confirmation time threshold, the charging status information of the reclosing switch is obtained, and then the reclosing switch action information is determined based on the charging status of the reclosing switch. Further judgment can be made based on the charging status of the reclosing switch. When the reclosing conditions are not met, the reclosing switch is locked, and when the reclosing conditions are met, the reclosing switch is allowed. The protection tripping and reclosing start-up are not locked, thereby effectively preventing the reclosing switch from operating incorrectly.

[0074] In one embodiment, Figure 3 As shown, the reclosing switch charging state information may include a reclosing switch fully charged state and a reclosing switch not fully charged state. Determining the reclosing switch action information according to the reclosing switch charging state information may include the following steps:

[0075] Step 301, if the reclosing switch charging state information indicates that the reclosing switch is fully charged, the unblocked reclosing switch information is used as the reclosing switch action information;

[0076] In practical applications, the reclosing switch charging status information may include the fully charged state and the incomplete charged state of the reclosing switch. When the protection device receives an invalid position status, that is, the switch position information is "00" or "11", if the reclosing switch is in a fully charged state, it means that the circuit breaker allows reclosing, and the reclosing switch can be unlocked.

[0077] Step 302: If the reclosing switch charging status information indicates that the reclosing switch is not fully charged, the locking reclosing switch information is used as the reclosing switch action information.

[0078] In actual applications, when the protection device receives an invalid position status, that is, the gate position information is "00" or "11", if the reclosing switch is not fully charged, it means that the reclosing switch function has exited and the reclosing switch can be locked.

[0079] Through the above embodiment, if the reclosing switch charging status information shows that the reclosing switch is fully charged, the unlocking reclosing switch information will be used as the reclosing switch action information; if the reclosing switch charging status information shows that the reclosing switch is not fully charged, the locking reclosing switch information will be used as the reclosing switch action information. The reclosing switch can be locked only when the reclosing switch is not fully charged, and the correct action of the reclosing switch can be guaranteed when the position signal is invalid.

[0080] In one embodiment, after the step of determining if the first duration satisfies a preset confirmation time threshold, the following steps may be included:

[0081] Generate location status alarm information; the location status alarm information is used to issue an alarm when the location status represented by the location message information is invalid.

[0082] In practical applications, when the acquired first duration meets a preset confirmation time threshold, the protection device may generate position status alarm information to issue an alarm when the position status represented by the position message information is invalid.

[0083] For example, when the gate position information in the received position message is "00" or "11", the gate position information is invalid position information. After its duration meets the preset confirmation time threshold, the protection device can report an invalid position status alarm message.

[0084] For example, when the received location message information contains abnormal conditions such as the failure to receive location information, the received location information has maintenance quality, the received data is invalid, etc., the corresponding location status is invalid. After its duration meets the preset confirmation time threshold, the protection device can report an invalid location status alarm message.

[0085] Through the above embodiment, by generating position status alarm information for alarming when the position status represented by the position message information is invalid, an alarm reminder can be issued for the invalid position information when abnormal position information is detected in the gate position information and the duration meets the preset confirmation time threshold.

[0086] In one embodiment, the step of obtaining the location message information may include the following steps:

[0087] Receive GOOSE message information; if there is location virtual terminal information in the GOOSE subscription configuration, use the GOOSE message information as location message information;

[0088] In a specific implementation, the protection device can receive GOOSE message information in real time, and judge whether there is location virtual terminal information in the GOOSE subscription configuration. When there is location virtual terminal information in the GOOSE subscription configuration, the GOOSE message information can be used as location message information.

[0089] In one example, the virtual terminal information may include switch input, trip output, signal output, alarm, interlocking and other information. When the protection device has subscribed to the position virtual terminal information, the GOOSE message received by the protection device through the GOOSE network has the location information, and then the circuit breaker's switch position information, such as the circuit breaker's trip position, closing position and other information, can be obtained by receiving the GOOSE message information.

[0090] If there is no location virtual terminal information in the GOOSE subscription configuration, obtain the second duration of the GOOSE message information; if the second duration meets the preset confirmation time threshold, obtain the reclosing switch charging status information; determine the reclosing switch action information according to the reclosing switch charging status information to control the reclosing switch to lock the reclosing switch action or not lock the reclosing switch action according to the reclosing switch action information.

[0091] The second duration may be a duration for receiving the same GOOSE message information, for example, a duration for determining that no location virtual terminal information exists in the GOOSE subscription configuration after the protection device receives the GOOSE message information in real time.

[0092] In actual applications, after the protection device receives the GOOSE message information in real time, if there is no position virtual terminal information in the GOOSE subscription configuration, the second duration for the GOOSE message information can be obtained, and then when the second duration meets the preset confirmation time threshold, the reclosing switch charging status information can be obtained, and the reclosing switch action information can be determined according to the reclosing switch charging status information to control the reclosing switch to lock the reclosing switch action or not lock the reclosing switch action according to the reclosing switch action information.

[0093] Since the protection device needs to subscribe to the dual-point location information of the intelligent terminal when making the secondary system SCD configuration file to determine the mapping connection relationship of the virtual terminal, the CCD file can be exported from the SCD file and downloaded to the protection device for operation. In actual scenarios, if the protection device does not subscribe to the location virtual terminal information, the GOOSE message it receives does not have location information.

[0094] In an optional embodiment, the preset confirmation time t for the second duration may range from 10s to 15s, and 15s may be used as the confirmation time threshold. After the second duration meets the preset confirmation time threshold, the protection device may report an invalid position status alarm message.

[0095] In one example, in order to determine that there is no position virtual terminal information in the GOOSE subscription configuration, since the position status it represents is invalid but cannot reflect the actual position status, it is possible to further determine whether the reclosing switch is in a fully charged state when it is determined that the confirmation time threshold is met. If the reclosing switch is in a fully charged state, it means that the circuit breaker allows reclosing, and the reclosing switch can be unlocked; if the reclosing switch is not fully charged, it means that the reclosing switch function has exited, and the reclosing switch can be locked.

[0096] In another example, the GOOSE message information received by the protection device is abnormal location information, that is, the location status corresponds to an invalid situation, which may include: the receiving gate location information is "00", the receiving gate location information is "11", the location virtual terminal information does not exist in the GOOSE subscription configuration, the GOOSE link is interrupted, the received location information has maintenance quality, and the GOOSE data is invalid.

[0097] GOOSE message information is received through the above embodiment. If the position virtual terminal information exists in the GOOSE subscription configuration, the GOOSE message information is used as the position message information. If the position virtual terminal information does not exist in the GOOSE subscription configuration, the second duration of the GOOSE message information is obtained. If the second duration meets the preset confirmation time threshold, the reclosing switch charging status information is obtained, and then the reclosing switch action information is determined according to the reclosing switch charging status information to control the reclosing switch to lock the reclosing switch action or not lock the reclosing switch action according to the reclosing switch action information. It can be judged whether there is the position virtual terminal information in the GOOSE subscription configuration, so as to lock the reclosing switch when the position virtual terminal information is not configured and the reclosing switch is not fully charged. If the position virtual terminal information is configured, the protection device can realize the locking or opening of the reclosing switch based on the judgment of the position information.

[0098] In one embodiment, if the gate location information satisfies a preset condition, obtaining the first duration of the location message information may include the following steps:

[0099] If the gate position information is not detected as the specified valid information, and the gate position information is the specified invalid information, the first duration of the position message information is obtained; or, if the gate position information is not detected as the specified valid information, and there is preset abnormal information in the position message information, the first duration of the position message information is obtained.

[0100] The specified valid information may be valid position information, that is, the corresponding position state is valid, such as "01" or "10"; the specified invalid information may be invalid position information, that is, the corresponding position state is invalid, such as "00" or "11".

[0101] In practical applications, the received gate position information can be detected to see whether it is "01" or "10". When the gate position information is valid position information, it indicates that the protection is working normally and the corresponding protection logic is executed. Then, the next received gate position information can be detected.

[0102] In one example, for the received location message information, when the gate position information is not detected as the specified valid information, and the gate position information is "00" or "11", the gate position information is invalid position information, and the position status corresponds to invalid, and then the first duration of the location message information can be obtained to further confirm the reclosing action in combination with the time threshold.

[0103] For example, when the control circuit is disconnected, the trip position and the closing position disappear at the same time, and the "00" position state may appear. If the control circuit is temporarily disconnected during the tripping and closing process, it can be regarded as a normal situation, but the control circuit may actually be disconnected, and the "00" state will continue. When the trip position and the closing position are abnormal, such as contact adhesion, the "11" position state will appear.

[0104] In another example, for the received location message information, when the gate position information is not detected as the specified valid information, and there is preset abnormal information in the location message information, the abnormal information may include abnormal situations such as the failure to receive location information (such as GOOSE link interruption), the received location information has maintenance quality, the received data is invalid, etc. (such as GOOSE data is invalid), and the corresponding position status is invalid, and then the first duration of the location message information can be obtained to further confirm the reclosing action in combination with the time threshold.

[0105] When the GOOSE link is interrupted, it means that the data transmission network has been disconnected, or the network frame loss is serious, the protection device can no longer receive any data, the intelligent terminal can no longer receive the opening information sent by the protection, and the intelligent protection device no longer has the protection logic calculation function and the tripping and closing function and has stopped working.

[0106] When the received location information carries maintenance quality, since the maintenance quality is issued by the intelligent terminal, it means that the circuit breaker or the intelligent terminal is currently under maintenance and has been shut down, and the protection also needs to be shut down.

[0107] When the GOOSE data is invalid, that is, the external GOOSE message received does not match the GOOSE data subscribed by the protection device, such as MAC address, GOCBRef, DataSetRef, GOID, APPID, etc., the information of the smart terminal cannot be received at this time, and the protection also needs to exit.

[0108] Through the above embodiment, if the gate position information is not detected as the specified valid information, and the gate position information is the specified invalid information, the first duration of the position message information is obtained, or if the gate position information is not detected as the specified valid information, and there is preset abnormal information in the position message information, the first duration of the position message information is obtained. The information of the invalid position state can be further combined with the time threshold to confirm the reclosing action, thereby avoiding false operation or refusal of the reclosing caused by invalid position signal.

[0109] In one embodiment, after the step of not detecting that the gate position information is designated valid information and the gate position information is designated invalid information, the following steps may be included:

[0110] Acquire position memory information; the position memory information is stored when it is detected that the previous gate position information of the gate position information is the designated valid information;

[0111] In actual applications, when the position status of the received gate position information corresponds to valid, the gate position information can be memorized as position memory information. Then, when it is determined that the received gate position information is "00" or "11", that is, the gate position information is invalid position information, considering that the position of the circuit breaker in actual operation will not change, if valid position information has been received before, the memorized position information (that is, position memory information) can be used.

[0112] The gate position information is set using the position memory information.

[0113] In one example, if the valid position information (i.e., position memory information) received previously is "01", the protected current position can be set to the "01" state; if the valid position information (i.e., position memory information) received previously is "10", the protected current position can be set to the "10" state.

[0114] For example, when the received gate position information is "00" or "11", the previously memorized valid position information can be used for setting. When "01" is set, the protection is processed according to the jump logic, and when "10" is set, the protection is processed according to the jump logic. Starting the reclosing includes protection tripping to start the reclosing and tripping to start the reclosing. Both functions can complete the task of protection starting the reclosing. When the reclosing is fully charged, even if the trip information is not received, the protection tripping to start the reclosing should not be locked, and the protection tripping to start the reclosing function is still valid.

[0115] The position memory information is obtained through the above embodiment. The position memory information is stored when it is detected that the previous gate position information is the specified valid information. Then, the gate position information is set using the position memory information. When the received gate position information is continuously "00" or "11", the previous valid position information is used to lock the reclosing switch when the reclosing switch is not fully charged, thereby realizing the locking of the reclosing switch when the reclosing conditions are not met.

[0116] In order to enable those skilled in the art to better understand the above steps, Figure 4 The embodiment of the present application is illustrated by an example, but it should be understood that the embodiment of the present application is not limited to this.

[0117] The process of the intelligent protection device determining the locking reclosing switch according to the various position information received can be:

[0118] 1. For real-time reception of GOOSE messages (i.e. GOOSE message information), it is possible to determine whether there is location virtual terminal information in the GOOSE subscription configuration;

[0119] 2. When the protection device has not subscribed to the position virtual terminal information, an invalid position state alarm may be issued when the duration (i.e., the second duration) satisfies the confirmation time t (i.e., the confirmation time threshold), and the reclosing switch charging state information may be further combined to determine whether to lock the reclosing switch or not;

[0120] 3. When the protection device has subscribed to the position virtual terminal information (i.e., obtaining the position message information), determine whether the received position information (i.e., the gate position information) is "01" or "10". If it is "01" or "10" (i.e., specifying valid information), determine that the position information is valid and detect the next received position information;

[0121] 4. If it is not "01" or "10", determine whether the received position information is "00" or "11". If it is "00" or "11" (i.e., invalid information is specified), if the previous position information is valid, the memorized position information (i.e., position memory information) can be used for setting;

[0122] 5. When it is "00" or "11", and the memorized position information is used for setting or the previous position information is invalid, an invalid position state alarm (i.e., position state alarm information) can be issued when the duration (i.e., the first duration) meets the confirmation time t (i.e., the confirmation time threshold), and the reclosing switch charging state information can be further combined to determine whether to lock the reclosing switch or not;

[0123] 6. When the reclosing switch is fully charged (i.e., the reclosing switch charging status information is that the reclosing switch is fully charged), the reclosing switch may not be locked (i.e., the information of not locking the reclosing switch is used as the reclosing switch action information); when the reclosing switch is not fully charged (i.e., the reclosing switch charging status information is that the reclosing switch is not fully charged), the reclosing switch may be locked (i.e., the information of locking the reclosing switch is used as the reclosing switch action information);

[0124] 7. When it is not "00" or "11", and the GOOSE link is interrupted, the location information has maintenance quality, and the GOOSE data is invalid (that is, there is preset abnormal information in the location message information), the location status is invalid accordingly, and then when the duration (that is, the first duration) meets the confirmation time t (that is, the confirmation time threshold), an invalid position status alarm (that is, the position status alarm information) can be issued, and the reclosing switch can be locked (that is, the reclosing switch action information is the locking reclosing switch information).

[0125] It should be understood that although Figure 2-3The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2-3 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0126] In one embodiment, Figure 5 As shown, a reclosing control device for line protection is provided, comprising:

[0127] The position message information acquisition module 501 is used to acquire the position message information; the position message information carries the switch position information of the circuit breaker;

[0128] A gate location information determination module 502, configured to obtain a first duration of the location message information if the gate location information satisfies a preset condition;

[0129] The reclosing action information determination module 503 is used to determine the reclosing action information if the first duration meets a preset confirmation time threshold, so as to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information.

[0130] In one embodiment, the reclosing action information determination module 503 includes:

[0131] A reclosing switch charging status information acquisition submodule, configured to acquire the reclosing switch charging status information if the first duration meets a preset confirmation time threshold;

[0132] The reclosing action information determination submodule is used to determine the reclosing action information according to the reclosing charging state information.

[0133] In one embodiment, the reclosing switch charging state information includes a reclosing switch fully charged state and a reclosing switch not fully charged state, and the reclosing switch action information determination submodule includes:

[0134] An unblocked reclosing unit, used for, if the reclosing charging state information indicates that the reclosing is fully charged, using the unblocked reclosing information as the reclosing action information;

[0135] The locking reclosing unit is used to use the locking reclosing information as the reclosing action information if the reclosing charging state information indicates that the reclosing is not fully charged.

[0136] In one embodiment, the apparatus further comprises:

[0137] The alarm information generation module is used to generate location status alarm information; the location status alarm information is used to issue an alarm when the location status represented by the location message information is invalid.

[0138] In one embodiment, the location message information acquisition module 501 includes:

[0139] The message information receiving submodule is used to receive GOOSE message information;

[0140] The location virtual terminal information confirmation submodule is used to use the GOOSE message information as the location message information if the location virtual terminal information exists in the GOOSE subscription configuration;

[0141] Also includes:

[0142] A second duration acquisition module, configured to acquire the second duration of the GOOSE message information if the location virtual terminal information does not exist in the GOOSE subscription configuration;

[0143] A status information acquisition module, configured to acquire the reclosing switch charging status information if the second duration meets a preset confirmation time threshold;

[0144] The reclosing action determination module is used to determine the reclosing action information according to the reclosing charging state information, so as to control the reclosing to perform a locking reclosing action or a non-locking reclosing action according to the reclosing action information.

[0145] In one embodiment, the gate position information determination module 502 includes:

[0146] A first duration acquisition submodule, used for acquiring a first duration of the position message information if the gate position information is not detected as designated valid information and the gate position information is designated invalid information;

[0147] or,

[0148] If the gate position information is not detected as designated valid information and there is preset abnormal information in the position message information, a first duration of the position message information is obtained.

[0149] In one embodiment, the apparatus further comprises:

[0150] A position memory information acquisition module, used to acquire position memory information; the position memory information is stored when it is detected that the previous gate position information of the gate position information is designated valid information;

[0151] A setting module is used to set the gate position information using the position memory information.

[0152] In an embodiment of the present application, by acquiring position message information, the position message information carries the gate position information of the circuit breaker. If the gate position information satisfies a preset condition, the first duration of the position message information is acquired. If the first duration meets a preset confirmation time threshold, the reclosing action information is determined to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information. This realizes locking or not locking the reclosing based on the gate position information received by the protection device. By determining the gate position information and confirming the reclosing action in combination with the time threshold, it is possible to effectively prevent the reclosing from operating incorrectly, thereby avoiding false operation or refusal to operate the reclosing due to invalid position signals.

[0153] For the specific definition of a reclosing control device in a line protection, please refer to the definition of a reclosing control method in a line protection mentioned above, which will not be repeated here. Each module in the above-mentioned reclosing control device in a line protection can be implemented in whole or in part by software, hardware and a combination thereof. 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 of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0154] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 6 As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, 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, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the reclosing control data in the line protection. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the reclosing control method in the line protection is implemented.

[0155] Those skilled in the art will understand that Figure 6 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.

[0156] In one 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:

[0157] Obtaining location message information; the location message information carries the switch location information of the circuit breaker;

[0158] If the gate position information meets a preset condition, obtaining a first duration of the position message information;

[0159] If the first duration meets a preset confirmation time threshold, the reclosing action information is determined to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information.

[0160] In one embodiment, when the processor executes the computer program, it also implements the steps of the reclosing control method in line protection in other embodiments described above.

[0161] 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:

[0162] Obtaining location message information; the location message information carries the switch location information of the circuit breaker;

[0163] If the gate position information meets a preset condition, obtaining a first duration of the position message information;

[0164] If the first duration meets a preset confirmation time threshold, the reclosing action information is determined to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information.

[0165] In one embodiment, when the computer program is executed by the processor, the steps of the reclosing control method in line protection in other embodiments described above are also implemented.

[0166] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods 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 memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. 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).

[0167] The technical features of the above embodiments may be arbitrarily combined. 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 specification.

[0168] The above-mentioned 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 invention patent. 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 patent of the present application shall be subject to the attached claims.

Claims

1. A reclosing control method in line protection, characterized in that: The method comprises: Obtaining location message information; the location message information carries the switch location information of the circuit breaker; If the gate position information meets a preset condition, obtaining a first duration of the position message information; the preset condition is detecting abnormal position information in the gate position information; If the first duration meets the preset confirmation time threshold, determine the reclosing action information to control the reclosing to lock the reclosing action or not lock the reclosing action according to the reclosing action information; including: if the first duration meets the preset confirmation time threshold, obtain the reclosing charging state information; determine the reclosing action information according to the reclosing charging state information; Wherein, the reclosing switch charging state information includes a reclosing switch fully charged state and a reclosing switch not fully charged state, and determining the reclosing switch action information according to the reclosing switch charging state information includes: If the reclosing switch charging state information indicates that the reclosing switch is fully charged, the unblocked reclosing switch information is used as the reclosing switch action information; If the reclosing switch charging state information indicates that the reclosing switch is not fully charged, the locking reclosing switch information is used as the reclosing switch action information.

2. The method according to claim 1, characterized in that After the step of if the first duration meets the preset confirmation time threshold, the method further includes: Generate location status alarm information; the location status alarm information is used to issue an alarm when the location status represented by the location message information is invalid.

3. The method according to claim 1, characterized in that The obtaining of location message information includes: Receive GOOSE message information; If there is location virtual terminal information in the GOOSE subscription configuration, the GOOSE message information is used as the location message information; Also includes: If the location virtual terminal information does not exist in the GOOSE subscription configuration, obtain the second duration of the GOOSE message information; If the second duration meets a preset confirmation time threshold, obtaining reclosing switch charging state information; According to the reclosing switch charging state information, the reclosing switch action information is determined to control the reclosing switch to perform a locking reclosing switch action or a non-locking reclosing switch action according to the reclosing switch action information.

4. The method according to any one of claims 1 to 3, characterized in that: If the gate location information satisfies a preset condition, obtaining a first duration of the location message information includes: If the gate position information is not detected as designated valid information, and the gate position information is designated invalid information, obtaining a first duration of the position message information; or, If the gate position information is not detected as designated valid information and there is preset abnormal information in the position message information, a first duration of the position message information is obtained.

5. The method according to claim 4, characterized in that After the step of not detecting that the gate position information is designated valid information and the gate position information is designated invalid information, the method further includes: Acquire position memory information; the position memory information is stored when it is detected that the previous gate position information of the gate position information is the designated valid information; The gate position information is set using the position memory information.

6. A reclosing control device for line protection, characterized in that: The device comprises: A position message information acquisition module, used to acquire position message information; the position message information carries the switch position information of the circuit breaker; A gate position information judgment module, used for obtaining a first duration of the position message information if the gate position information satisfies a preset condition; the preset condition is detecting abnormal position information in the gate position information; A reclosing action information determination module, configured to determine the reclosing action information if the first duration meets a preset confirmation time threshold, so as to control the reclosing to perform a locking reclosing action or a non-locking reclosing action according to the reclosing action information; Wherein, the reclosing action information determination module includes: A reclosing switch charging status information acquisition submodule, configured to acquire the reclosing switch charging status information if the first duration meets a preset confirmation time threshold; A reclosing action information determination submodule, used to determine the reclosing action information according to the reclosing charging state information; The reclosing switch charging state information includes a reclosing switch fully charged state and a reclosing switch not fully charged state, and the reclosing switch action information determination submodule includes: An unblocked reclosing unit, used for, if the reclosing charging state information indicates that the reclosing is fully charged, using the unblocked reclosing information as the reclosing action information; The locking reclosing unit is used to use the locking reclosing information as the reclosing action information if the reclosing charging state information indicates that the reclosing is not fully charged.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the reclosing control method in line protection according to any one of claims 1 to 5 are implemented.

8. 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 reclosing control method in line protection according to any one of claims 1 to 5 are implemented.

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