A substation incoming line protection method, device, equipment and readable storage medium

Abstract

The present invention relates to the technical field of traction power supply. The method comprises the following steps: obtaining first standby automatic switching action information and second standby automatic switching action information; determining first information according to the first standby automatic switching action information and the second standby automatic switching action information, wherein the first information comprises actual switching conditions of a main power supply incoming line circuit breaker of a first traction substation, a connecting line power supply incoming line circuit breaker of the first traction substation, a main power supply incoming line circuit breaker of a second traction substation and a connecting line power supply incoming line circuit breaker of the second traction substation; judging the closing conditions of all incoming line circuit breakers of the first traction substation and the second traction substation according to the first information, and obtaining a judgment result; setting a closing loop lock or a closing loop protection according to the judgment result to protect the closing loop of the incoming lines of the first traction substation and the second traction substation. The present invention realizes the setting of the closing loop lock and the closing loop acceleration protection of the power grid of the "hand-in-hand" traction substation, and improves the safety of the operation of the "hand-in-hand" traction substation.

Description

Technical Field

[0001] The present invention relates to the technical field of traction power supply, and in particular to a substation incoming line protection method, device, equipment and readable storage medium. Background Art

[0002] Traditionally, two adjacent traction substations use "hand-in-hand" power supply, that is, each adjacent traction substation introduces one independent incoming power supply, and the other power supply of the two substations is used as backup for each other through the communication line between the two substations. Since the information between each substation is independent of each other, the backup automatic switching may easily cause the incoming power supply of the two "hand-in-hand" traction substations to be closed, endangering the safe operation of the power grid. However, since each traction substation cannot detect the equipment operating status of the adjacent traction substation, each "hand-in-hand" traction substation is usually unable to set the incoming power supply closing lock and incoming power supply closing acceleration protection. Summary of the invention

[0003] The object of the present invention is to provide a substation incoming line protection method, device, equipment and readable storage medium to improve the above-mentioned problems.

[0004] In order to achieve the above objectives, the present application provides the following technical solutions:

[0005] On the one hand, an embodiment of the present application provides a substation incoming line protection method, the method comprising:

[0006] Acquire first standby automatic transfer action information and second standby automatic transfer action information, wherein the first standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of the first traction substation and a tie line power supply incoming line circuit breaker of the first traction substation, and the second standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of the second traction substation and a tie line power supply incoming line circuit breaker of the second traction substation, and the first traction substation and the second traction substation are two adjacent traction substations;

[0007] Determine first information according to the first standby automatic transfer action information and the second standby automatic transfer action information, wherein the first information includes actual switching conditions of the main power supply incoming line circuit breaker of the first traction substation, the tie line power supply incoming line circuit breaker of the first traction substation, the main power supply incoming line circuit breaker of the second traction substation, and the tie line power supply incoming line circuit breaker of the second traction substation;

[0008] Determine the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, and obtain a determination result;

[0009] According to the judgment result, a closed-loop lockout or closed-loop protection is set to protect the incoming lines of the first traction substation and the second traction substation.

[0010] In a second aspect, an embodiment of the present application provides a substation incoming line protection device, the device comprising:

[0011] an acquisition module, used for acquiring first standby automatic transfer action information and second standby automatic transfer action information, wherein the first standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of a first traction substation and a tie line power supply incoming line circuit breaker of the first traction substation, and the second standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of a second traction substation and a tie line power supply incoming line circuit breaker of the second traction substation, and the first traction substation and the second traction substation are two adjacent traction substations;

[0012] a determination module, configured to determine first information according to the first standby automatic transfer action information and the second standby automatic transfer action information, wherein the first information includes actual switching conditions of a main power supply incoming line circuit breaker of the first traction substation, a tie line power supply incoming line circuit breaker of the first traction substation, a main power supply incoming line circuit breaker of the second traction substation, and a tie line power supply incoming line circuit breaker of the second traction substation;

[0013] a judgment module, configured to judge the closing conditions of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, and obtain a judgment result;

[0014] The processing module is used to set the loop locking or loop protection according to the judgment result to protect the incoming lines of the first traction substation and the second traction substation.

[0015] In a third aspect, an embodiment of the present application provides a substation incoming line protection device, the device comprising a memory and a processor. The memory is used to store a computer program; the processor is used to implement the steps of the above-mentioned substation incoming line protection method when executing the computer program.

[0016] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned substation incoming line protection method are implemented.

[0017] The beneficial effects of the present invention are:

[0018] The present invention arranges power grid closing-loop interlocking between a "hand-in-hand" traction substation and an adjacent "hand-in-hand" traction substation, thereby reducing the risk of closing of the incoming power supply due to mistaken closing of the main power supply incoming line circuit breakers of the first traction substation and the second traction substation and the connecting line power supply incoming line circuit breakers of the first traction substation and the second traction substation, thereby improving the safety and reliability of the operation of the "hand-in-hand" traction substation. At the same time, closing-loop acceleration protection is arranged in the "hand-in-hand" traction substation. When the incoming power supply is closed, the closing-loop protection circuit breaker can be accelerated to trip, the fault can be quickly cut off, and the safety and reliability of the equipment operation are improved.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by implementing the embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The figure is a schematic flow chart of a substation incoming line protection method according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the substation incoming line protection device described in an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the substation incoming line protection device described in an embodiment of the present invention.

[0024] Figure 4 Schematic diagram of the "hand-in-hand" power supply structure of the traction substation.

[0025] Labels in the figure: 901, acquisition module; 902, determination module; 903, judgment module; 904, processing module; 9021, first processing unit; 9022, second processing unit; 9023, third processing unit; 9041, first judgment unit; 9042, second judgment unit; 90421, acquisition unit; 90422, fourth processing unit; 90423, fifth processing unit; 904221, sixth processing unit; 904222, seventh processing unit; 800, substation incoming line protection device; 801, processor; 802, memory; 803, multimedia component; 804, I / O interface; 805, communication component. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] Embodiment 1:

[0029] This embodiment provides a substation incoming line protection method. It can be understood that a scenario can be laid out in this embodiment, for example: a scenario where loop locking and loop acceleration protection need to be set for two adjacent "hand-in-hand" traction substations.

[0030] See also Figure 1 , the figure shows that the method includes step S1, step S2, step S3 and step S4, which are specifically:

[0031] Step S1, obtaining first standby automatic transfer action information and second standby automatic transfer action information, wherein the first standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of a first traction substation and a tie line power supply incoming line circuit breaker of the first traction substation, and the second standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of a second traction substation and a tie line power supply incoming line circuit breaker of the second traction substation, and the first traction substation and the second traction substation are two adjacent traction substations;

[0032] It can be understood that the first standby automatic transfer action information and the second standby automatic transfer action information are both action information of the incoming circuit breaker obtained through each standby automatic transfer system.

[0033] Step S2, determining first information according to the first standby automatic transfer action information and the second standby automatic transfer action information, wherein the first information includes actual switching conditions of the main power supply incoming line circuit breaker of the first traction substation, the tie line power supply incoming line circuit breaker of the first traction substation, the main power supply incoming line circuit breaker of the second traction substation, and the tie line power supply incoming line circuit breaker of the second traction substation;

[0034] It can be understood that the step S2 also includes step S21, step S22 and step S23, which are specifically:

[0035] Step S21, determining a communication signal between the first traction substation and the second traction substation according to the first standby automatic switching action information and the second standby automatic switching action information;

[0036] It can be understood that the communication signal is a GOOSE signal. GOOSE uses network signals to replace the hard-wired communication method between conventional substation devices, which greatly simplifies the secondary cable wiring of the substation.

[0037] Step S22: performing detection according to the communication signal between the first traction substation and the second traction substation to obtain a detection result, wherein the detection result includes the operation status of the main power supply incoming line circuit breaker of the first traction substation, the tie line power supply incoming line circuit breaker of the first traction substation, the main power supply incoming line circuit breaker of the second traction substation, and the tie line power supply incoming line circuit breaker of the second traction substation;

[0038] It can be understood that the digital standby automatic switching of the two traction substations "hand in hand" is transmitted to the intelligent interface device of the other traction substation in the form of GOOSE signals, realizing the interaction and sharing of the two incoming equipment information. Each traction substation can detect the equipment operating status of the incoming circuit breakers and disconnectors of the adjacent traction substation.

[0039] Step S23: Obtain first information according to the detection result.

[0040] It can be understood that the actual switching status of each incoming circuit breaker can be identified based on the detection of the intelligent interface device.

[0041] In this embodiment, the actual switching status of the incoming circuit breaker can also be determined by taking a photo of the incoming circuit breaker with a camera, which specifically includes: obtaining a photo of the incoming circuit breaker; using a video algorithm program to identify the photo of the incoming circuit breaker to obtain an identification result, and the identification result includes the actual switching status of the incoming circuit breaker. It should be noted that the camera takes a photo of the incoming circuit breaker, and the video algorithm program identifies the switch opening and closing state of the photographed photo, converts the opening and closing state, such as binary 0 and 1; and then forwards the value of 0 or 1 corresponding to the switch opening and closing state to the intelligent interface device of the standby automatic switch through the interface program for identification.

[0042] Step S3, judging the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, and obtaining a judgment result;

[0043] Step S4: setting a closed-loop lockout or closed-loop protection according to the judgment result to protect the incoming lines of the first traction substation and the second traction substation.

[0044] It can be understood that the step S4 also includes step S41, which specifically includes:

[0045] Step S41, judging the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, wherein, if the first incoming circuit breakers are all in the closed position, it is judged that the first traction substation and the second traction substation have a closing loop, and the closing loop lock is set for the second incoming circuit breaker, the first incoming circuit breaker is the incoming circuit breaker other than the incoming circuit breaker to be closed, and the second incoming circuit breaker is the incoming circuit breaker to be closed; if at least one of the first incoming circuit breakers is in the open position, it is judged that the first traction substation and the second traction substation do not have a closing loop, and a control command is sent, and the control command is a command to control the second incoming circuit breaker to close.

[0046] In this embodiment, if Figure 4As shown, take the main power supply incoming line circuit breaker of A station as the incoming line circuit breaker to be closed, that is, 8QF of A station as the main power supply incoming line circuit breaker to be closed as an example: when the digital communication between the two adjacent stations is normal and the closing-loop locking pressure plate is put into operation, if the other three incoming line circuit breakers, 7QF of A station, 7QF of B station and 8QF of B station, except 8QF of A station, are all in the closed position, it is considered that closing 8QF of A station at this time will form an incoming power closing loop, and the digital locking unit will maintain the position of the closing-loop locking normally open contact of the closing circuit of 8QF of A station in series, thereby locking the closing of the incoming line circuit breaker; if except 8QF of A station When at least one of the other three incoming circuit breakers, 7QF of station A, 7QF of station B and 8QF of station B, other than 8QF, is in the open position, the incoming circuit breaker of station A is not judged as a closed-loop closing when it is closed, and the digital locking unit drives the normally open contact of the closing loop of the 8QF closing circuit that is connected in series to station A to close, and the circuit is turned on here to release the lock on the closing loop of the circuit breaker. It should be noted that the advantage of using the normally open contact here is that when the power supply of the device is lost, the contact is still in the normally open state, and the circuit breaker is still closed to avoid the closing of the power grid in an unknown state and ensure system safety.

[0047] If there is an abnormality in communication between two adjacent stations, the positions of the switches of the two stations cannot be determined. In order to avoid the closing of the power grid, the closing lock is pressed when the incoming circuit breaker is closed; if the equipment position is confirmed and the closing lock needs to be canceled, the closing lock pressure plate can be withdrawn.

[0048] It should be noted that station A is the first traction substation, station B is the second traction substation, 7QF is the incoming power circuit breaker for the interconnection line, and 8QF is the incoming power circuit breaker for the main power supply. When the remaining incoming circuit breakers are the incoming circuit breakers to be closed, their principles are similar to the above situation, so they will not be repeated.

[0049] In this embodiment, by setting up power grid closing-loop interlocking between the "hand-in-hand" traction substation and the adjacent "hand-in-hand" traction substation, the risk of closing the incoming power supply due to the mistaken closing of the main power supply incoming circuit breaker and the interconnecting line power supply incoming circuit breaker is reduced, thereby improving the safety and reliability of the operation of the "hand-in-hand" traction substation.

[0050] It can be understood that the step S4 also includes step S42, which is specifically:

[0051] Step S42, judging the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, wherein, if the main power incoming circuit breaker of the first traction substation, the interconnecting line power incoming circuit breaker of the first traction substation, the main power incoming circuit breaker of the second traction substation and the interconnecting line power incoming circuit breaker of the second traction substation are all in the closed position, setting the closed loop protection for the incoming circuit breaker to be tripped.

[0052] It can be understood that when the digital communication between two adjacent stations is normal and the closing-loop accelerated tripping configuration word is put into operation, after the main power supply incoming line circuit breaker or the interconnecting line incoming line circuit breaker of each station is manually or electrically closed or the standby automatic closing action is closed, and the reclosing switch is closed, the circuit breaker position changes from open to closed, and the standby automatic closing action starts the incoming power closing-loop accelerated protection of each circuit breaker position detection, and detects whether the main power supply incoming line circuit breaker of the first traction substation, the interconnecting line power supply incoming line circuit breaker of the first traction substation, the main power supply incoming line circuit breaker of the second traction substation, and the interconnecting line power supply incoming line circuit breaker of the second traction substation are all in the closed position. If all four circuit breakers are in the closed position, it is judged that the "hand-in-hand" traction substation is closed, and the closing-loop accelerated protection needs to be set.

[0053] It can be understood that the step S42 also includes step S421, step S422 and step S423, which are specifically:

[0054] Step S421, obtaining the detection result of the voltage transformer at the main power supply incoming line of the first traction substation;

[0055] Step S422, determining the incoming line circuit breaker to be tripped according to the detection result of the voltage transformer at the main power supply incoming line of the first traction substation;

[0056] It can be understood that when the position of the main power supply incoming line circuit breaker of the first traction substation changes from the open position to the closed position, causing the "hand-in-hand" traction substation incoming line to be closed, the voltage of the voltage transformer before the closing of the main power supply incoming line circuit breaker of the first traction substation, that is, the 2YH voltage of station A, is obtained to determine the incoming line circuit breaker to be tripped. It should be noted that when the position of the main power supply incoming line circuit breaker of the second traction substation changes from the open position to the closed position, causing the "hand-in-hand" traction substation incoming line to be closed, the voltage of the voltage transformer before the closing of the main power supply incoming line circuit breaker of the second traction substation is obtained; when the position of the connecting line power incoming line circuit breaker of the first traction substation or the second traction substation changes from the open position to the closed position, causing the "hand-in-hand" traction substation incoming line to be closed, the connecting line incoming line circuit breaker that is in action is used as the incoming line circuit breaker to be tripped.

[0057] It can be understood that the step S422 also includes step S4221 and step S4222, which are specifically:

[0058] Step S4221: when the detection result of the voltage transformer at the power supply incoming line of the first traction substation is no voltage, the main power supply incoming line circuit breaker of the first traction substation is used as the incoming line circuit breaker to be tripped;

[0059] Step S4222: When the detection result of the voltage transformer at the power supply incoming line of the first traction substation is that there is voltage, the tie line circuit breaker of the first traction substation is used as the incoming line circuit breaker to be tripped.

[0060] In this embodiment, when the loop is closed, the incoming line circuit breaker needs to be tripped to solve the problem of closing the loop between two adjacent traction substations. When the main power supply incoming line is supplying power normally, the incoming line circuit breakers of the two substations are preferentially used as the incoming line circuit breakers to be tripped. That is to say, the advantages of the hand-in-hand traction substations preferentially using the two main power supply incoming lines for power supply are: (1) The impact range of the failure of the two substations using the main incoming line power supply is small, and the failure of one main incoming line power supply does not affect the normal operation of the other substation; if the first traction substation is powered by the incoming line power supply of the connecting line, and the connecting line power supply comes from the second traction substation, then when the incoming line power supply of the second traction substation fails, the first traction substation will also be cut off. (2) The reliability is stronger. The power supply of the substation supplied by the connecting line incoming line power supply is affected by the main substation and the connecting line. If the main substation or the related circuit of the connecting line fails, the power supply of the substation supplied will be affected.

[0061] It should be noted that when the position of the main power supply incoming line circuit breaker of the second traction substation changes from the open position to the closed position, causing the "hand-in-hand" traction substation incoming line to be closed, the judgment principle is the same as above, so it will not be repeated here. In addition, when the position of the connecting line power incoming line circuit breaker of the first traction substation or the second traction substation changes from the open position to the closed position, causing the "hand-in-hand" traction substation incoming line to be closed, the actuated connecting line incoming line circuit breaker will be used as the incoming line circuit breaker to be tripped.

[0062] Step S423: Setting loop closing protection for the incoming circuit breaker to be tripped according to a preset time threshold.

[0063] It should be noted that the closing-loop lockout and closing-loop protection can be realized in the traditional "hand-in-hand" traction substation or in the digital "hand-in-hand" traction substation. The judgment of closing-loop lockout or closing-loop tripping is based on the opening and closing of the four switch positions of the main power supply incoming circuit breaker of the first traction substation, the interconnection line power supply incoming circuit breaker of the first traction substation, the main power supply incoming circuit breaker of the second traction substation, and the interconnection line power supply incoming circuit breaker of the second traction substation. The rest of the incoming switches are usually in the closed position. If the closing state of the incoming switch in the normal operation mode is different, it needs to be determined according to the working conditions, and other incoming circuit breakers or disconnecting switches that are usually in the open position are included in the closing-loop lockout or closing-loop tripping circuit. The above-mentioned standby automatic start-up action is different from the scope of conventional standby automatic start-up action. Conventional standby automatic start-up action usually refers to the input of standby power supply. The above-mentioned standby automatic start-up action is based on the existing standby automatic start-up information. All related switches and electrical quantity state changes included in the closing loop lockout or closing loop protection are regarded as standby automatic start-up actions to comprehensively utilize information and save resources. Whether the incoming power supply closing loop lockout or the incoming power supply closing loop acceleration protection is used alone or both are used is determined according to the project situation or site conditions. The incoming circuit breaker to be tripped when the closing loop protection trips due to the closure of the incoming circuit breaker can be specifically determined according to the project situation. Whether the digital "hand-in-hand" traction substation is realized through standby automatic start-up or through other parts of comprehensive automation is determined according to the project situation.

[0064] In this embodiment, by setting up closing-loop accelerated protection in the "hand-in-hand" traction substation, when the incoming power line closes the loop, the closing-loop protection can be accelerated to trip, the fault can be quickly cut off, and the safety and reliability of equipment operation can be improved.

[0065] Embodiment 2:

[0066] like Figure 2 As shown, this embodiment provides a substation incoming line protection device, the device includes an acquisition module 901, a determination module 902, a judgment module 903 and a processing module 904, wherein specifically:

[0067] An acquisition module 901 is used to acquire first standby automatic switching action information and second standby automatic switching action information, wherein the first standby automatic switching action information includes actions of a main power supply incoming line circuit breaker of a first traction substation and a tie line power supply incoming line circuit breaker of the first traction substation, and the second standby automatic switching action information includes actions of a main power supply incoming line circuit breaker of a second traction substation and a tie line power supply incoming line circuit breaker of the second traction substation, and the first traction substation and the second traction substation are two adjacent traction substations;

[0068] The determination module 902 is used to determine first information according to the first standby automatic transfer action information and the second standby automatic transfer action information, wherein the first information includes actual switching conditions of the main power supply incoming line circuit breaker of the first traction substation, the tie line power supply incoming line circuit breaker of the first traction substation, the main power supply incoming line circuit breaker of the second traction substation, and the tie line power supply incoming line circuit breaker of the second traction substation;

[0069] A judgment module 903 is used to judge the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, and obtain a judgment result;

[0070] The processing module 904 is used to set a loop closing lock or loop closing protection to protect the incoming lines of the first traction substation and the second traction substation according to the judgment result.

[0071] In a specific implementation of the present disclosure, the determination module 902 further includes a first processing unit 9021, a second processing unit 9022 and a third processing unit 9023, which are specifically:

[0072] The first processing unit 9021 is used to determine the communication signal between the first traction substation and the second traction substation according to the first standby automatic switching action information and the second standby automatic switching action information;

[0073] The second processing unit 9022 is used to perform detection according to the communication signal between the first traction substation and the second traction substation to obtain a detection result, wherein the detection result includes the operation status of the main power supply incoming line circuit breaker of the first traction substation, the tie line power supply incoming line circuit breaker of the first traction substation, the main power supply incoming line circuit breaker of the second traction substation and the tie line power supply incoming line circuit breaker of the second traction substation;

[0074] The third processing unit 9023 is used to obtain first information according to the detection result.

[0075] In a specific implementation of the present disclosure, the processing module 904 further includes a first judgment unit 9041, which specifically includes:

[0076] The first judgment unit 9041 is used to judge the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, wherein, if the first incoming circuit breakers are all in the closed position, it is judged that the first traction substation and the second traction substation have a closing loop, and the closing loop lock is set for the second incoming circuit breaker, the first incoming circuit breaker is the incoming circuit breaker except the incoming circuit breaker to be closed, and the second incoming circuit breaker is the incoming circuit breaker to be closed; if at least one of the first incoming circuit breakers is in the open position, it is judged that the first traction substation and the second traction substation do not have a closing loop, and a control command is sent, and the control command is a command to control the second incoming circuit breaker to close.

[0077] In a specific implementation of the present disclosure, the processing module 904 further includes a second judgment unit 9042, which specifically includes:

[0078] The second judgment unit 9042 is used to judge the closing status of all incoming circuit breakers of the first traction substation and the second traction substation based on the first information, wherein if the main power incoming circuit breaker of the first traction substation, the interconnecting line power incoming circuit breaker of the first traction substation, the main power incoming circuit breaker of the second traction substation and the interconnecting line power incoming circuit breaker of the second traction substation are all in the closed position, then the closed loop protection is set for the incoming circuit breaker to be tripped.

[0079] In a specific implementation of the present disclosure, the second judgment unit 9042 further includes an acquisition unit 90421, a fourth processing unit 90422 and a fifth processing unit 90423, which are specifically:

[0080] An acquisition unit 90421 is used to acquire a detection result of a voltage transformer at a main power supply incoming line of the first traction substation;

[0081] The fourth processing unit 90422 is used to determine the incoming line circuit breaker to be tripped according to the detection result of the voltage transformer at the main power supply incoming line of the first traction substation;

[0082] The fifth processing unit 90423 is used to set a closing loop protection for the incoming circuit breaker to be tripped according to a preset time threshold.

[0083] In a specific implementation of the present disclosure, the fourth processing unit 90422 also includes a sixth processing unit 904221 and a seventh processing unit 904222, which are specifically:

[0084] The sixth processing unit 904221 is used to use the main power supply incoming line circuit breaker of the first traction substation as the incoming line circuit breaker to be tripped when the detection result of the voltage transformer at the power incoming line of the first traction substation is no voltage;

[0085] The seventh processing unit 904222 is used to use the tie line circuit breaker of the first traction substation as the incoming line circuit breaker to be tripped when the detection result of the voltage transformer at the power incoming line of the first traction substation is that there is pressure.

[0086] It should be noted that, regarding the device in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the method, and will not be elaborated here.

[0087] Embodiment 3:

[0088] Corresponding to the above method embodiment, this embodiment further provides a substation incoming line protection device, and the substation incoming line protection device described below and the substation incoming line protection method described above can refer to each other.

[0089] Figure 3 FIG. 8 is a block diagram of a substation incoming line protection device 800 according to an exemplary embodiment. Figure 3 As shown, the substation incoming line protection device 800 may include: a processor 801 and a memory 802. The substation incoming line protection device 800 may also include one or more of a multimedia component 803, an I / O interface 804, and a communication component 805.

[0090] The processor 801 is used to control the overall operation of the substation incoming line protection device 800 to complete all or part of the steps in the above-mentioned substation incoming line protection method. The memory 802 is used to store various types of data to support the operation of the substation incoming line protection device 800, and these data may include, for example, instructions for any application or method operating on the substation incoming line protection device 800, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 802 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 803 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 802 or sent via the communication component 805. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 804 provides an interface between the processor 801 and other interface modules, and the above-mentioned other interface modules can be keyboards, mice, buttons, etc. These buttons can be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the substation incoming line protection device 800 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 805 can include: Wi-Fi module, Bluetooth module, NFC module.

[0091] In an exemplary embodiment, the substation incoming line protection device 800 can be implemented by one or more application specific integrated circuits (Application Specific Integrated Circuit, referred to as ASIC), digital signal processors (Digital Signal Processor, referred to as DSP), digital signal processing devices (Digital Signal Processing Device, referred to as DSPD), programmable logic devices (Programmable Logic Device, referred to as PLD), field programmable gate arrays (Field Programmable Gate Array, referred to as FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned substation incoming line protection method.

[0092] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned substation incoming line protection method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 802 including program instructions, and the above-mentioned program instructions can be executed by the processor 801 of the substation incoming line protection device 800 to complete the above-mentioned substation incoming line protection method.

[0093] Embodiment 4:

[0094] Corresponding to the above method embodiment, a readable storage medium is also provided in this embodiment. The readable storage medium described below and the substation incoming line protection method described above can be referred to each other.

[0095] A readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the substation incoming line protection method of the above method embodiment.

[0096] The readable storage medium may specifically be a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, or other readable storage medium that can store program codes.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0098] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A substation incoming line protection method, characterized in that: include: Acquire first standby automatic transfer action information and second standby automatic transfer action information, wherein the first standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of the first traction substation and a tie line power supply incoming line circuit breaker of the first traction substation, and the second standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of the second traction substation and a tie line power supply incoming line circuit breaker of the second traction substation, and the first traction substation and the second traction substation are two adjacent traction substations; Determine first information according to the first standby automatic transfer action information and the second standby automatic transfer action information, wherein the first information includes actual switching conditions of the main power supply incoming line circuit breaker of the first traction substation, the tie line power supply incoming line circuit breaker of the first traction substation, the main power supply incoming line circuit breaker of the second traction substation, and the tie line power supply incoming line circuit breaker of the second traction substation; Determine the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, and obtain a determination result; According to the judgment result, a closed-loop lockout or closed-loop protection is set to protect the incoming lines of the first traction substation and the second traction substation; Wherein, setting a closed-loop lockout or closed-loop protection according to the judgment result to protect the incoming lines of the first traction substation and the second traction substation includes: According to the first information, the closing status of all incoming circuit breakers of the first traction substation and the second traction substation is judged, wherein if the first incoming circuit breakers are all in the closed position, it is judged that there is a closing loop between the first traction substation and the second traction substation, and a closing loop lock is set for the second incoming circuit breaker, the first incoming circuit breaker is the incoming circuit breaker other than the incoming circuit breaker to be closed, and the second incoming circuit breaker is the incoming circuit breaker to be closed; if at least one of the first incoming circuit breakers is in the open position, it is judged that there is no closing loop between the first traction substation and the second traction substation, and a control command is sent, and the control command is a command to control the second incoming circuit breaker to close; Wherein, setting the loop closing lock and loop closing protection to protect the incoming lines of the first traction substation and the second traction substation according to the judgment result includes: The closing status of all incoming circuit breakers of the first traction substation and the second traction substation is determined according to the first information, wherein if the main power incoming circuit breaker of the first traction substation, the interconnecting line power incoming circuit breaker of the first traction substation, the main power incoming circuit breaker of the second traction substation and the interconnecting line power incoming circuit breaker of the second traction substation are all in the closed position, then the closed-loop protection is set for the incoming circuit breaker to be tripped.

2. The substation incoming line protection method according to claim 1, characterized in that: The step of setting a closed loop protection for the incoming circuit breaker to be tripped comprises: Obtaining the detection result of the voltage transformer at the main power supply incoming line of the first traction substation; Determine the incoming line circuit breaker to be tripped according to the detection result of the voltage transformer at the main power supply incoming line of the first traction substation; A closing protection is set for the incoming circuit breaker to be tripped according to a preset time threshold.

3. A substation incoming line protection device, characterized in that: include: an acquisition module, used for acquiring first standby automatic transfer action information and second standby automatic transfer action information, wherein the first standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of a first traction substation and a tie line power supply incoming line circuit breaker of the first traction substation, and the second standby automatic transfer action information includes actions of a main power supply incoming line circuit breaker of a second traction substation and a tie line power supply incoming line circuit breaker of the second traction substation, and the first traction substation and the second traction substation are two adjacent traction substations; a determination module, configured to determine first information according to the first standby automatic transfer action information and the second standby automatic transfer action information, wherein the first information includes actual switching conditions of a main power supply incoming line circuit breaker of the first traction substation, a tie line power supply incoming line circuit breaker of the first traction substation, a main power supply incoming line circuit breaker of the second traction substation, and a tie line power supply incoming line circuit breaker of the second traction substation; a judgment module, configured to judge the closing conditions of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, and obtain a judgment result; A processing module, used for setting a closed-loop lockout or closed-loop protection to protect the incoming lines of the first traction substation and the second traction substation according to the judgment result; Wherein, the processing module includes: a first judgment unit, configured to judge the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, wherein if all the first incoming circuit breakers are in the closed position, it is judged that there is a closing loop between the first traction substation and the second traction substation, and a closing loop lock is set for the second incoming circuit breaker, wherein the first incoming circuit breaker is the incoming circuit breaker other than the incoming circuit breaker to be closed, and the second incoming circuit breaker is the incoming circuit breaker to be closed; if at least one of the first incoming circuit breakers is in the open position, it is judged that there is no closing loop between the first traction substation and the second traction substation, and a control command is sent, wherein the control command is a command for controlling the second incoming circuit breaker to be closed; Wherein, the processing module includes: The second judgment unit is used to judge the closing status of all incoming circuit breakers of the first traction substation and the second traction substation according to the first information, wherein if the main power incoming circuit breaker of the first traction substation, the interconnecting line power incoming circuit breaker of the first traction substation, the main power incoming circuit breaker of the second traction substation and the interconnecting line power incoming circuit breaker of the second traction substation are all in the closed position, then the closed loop protection is set for the incoming circuit breaker to be tripped.

4. The substation incoming line protection device according to claim 3, characterized in that: The second judging unit includes: An acquisition unit, used to acquire a detection result of a voltage transformer at a main power supply incoming line of the first traction substation; A fourth processing unit, configured to determine an incoming line circuit breaker to be tripped according to a detection result of a voltage transformer at an incoming line of a main power supply of the first traction substation; The fifth processing unit is used to set a closing loop protection for the incoming circuit breaker to be tripped according to a preset time threshold.

5. A substation incoming line protection device, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the substation incoming line protection method as described in any one of claims 1 to 2 when executing the computer program.

6. A readable storage medium, characterized in that: The readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the substation incoming line protection method according to any one of claims 1 to 2 are implemented.

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