Relay protection tripping and closing monitoring loop, monitoring method and related device

Abstract

The invention provides a circuit breaker control loop integrity monitoring method and related device.A relay protection tripping and closing monitoring circuit comprises an opening control loop and a closing control loop, the opening control loop comprises a tripping action contact TJ, a tripping outlet pressing plate LP1, a tripping protection relay TBJ, a circuit breaker normally-open auxiliary contact DL1 and a tripping coil TQ; two ends of the tripping action contact TJ are connected with a first monitoring module; the closing control loop comprises a closing action contact HJ, a closing outlet pressing plate LP2, an anti-tripping relay normally-closed auxiliary contact TBJV1, a closing holding relay HBJ, a circuit breaker normally-closed auxiliary contact DL2 and a closing coil HQ; two ends of the closing action contact HJ are connected with a second monitoring module; through the arrangement of the first monitoring module and the second monitoring module, the whole loop is monitored, a monitoring blind area can be eliminated, a fault signal can be found in time, secondary operation and maintenance personnel can conveniently process in advance, and an event that the circuit breaker refuses to operate is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid monitoring, in particular to the technical field of relay protection, and specifically to a relay protection tripping and closing monitoring circuit, a monitoring method and related devices. Background Art

[0002] In recent years, circuit breaker refusal to operate due to control circuit disconnection still occurs. Control circuit disconnection monitoring has always been a difficult problem that secondary operation and maintenance professionals want to solve. If the control circuit of the circuit breaker is disconnected and not discovered in time, then when the power system fails and the circuit breaker needs to be opened or closed, the circuit breaker will not operate correctly, resulting in the expansion of the scope of the fault and the serious consequences of damage to power equipment. Therefore, the integrity of the control circuit is of vital importance to the safe and stable operation of the power system.

[0003] At present, the monitoring scheme for secondary circuits mainly relies on the control circuit disconnection alarm signal composed of TWJ and HWJ auxiliary contacts. The two relays TWJ and HWJ lose power at the same time to determine that the opening and closing circuits are not conductive. Then the normally closed auxiliary contacts of TWJ and HWJ are connected in series in the signal circuit. When both relays lose power, the two are closed at the same time, and the signal circuit is conductive, thereby sending out a control circuit alarm signal to remind the operation and maintenance personnel to handle it on site.

[0004] However, since the TWJ and HWJ relays are connected to the switch mechanism in parallel with the HBJ and TBJ relays respectively, they can only monitor the integrity of the circuit breaker auxiliary contacts, spring un-energy-stored auxiliary contacts, tripping coils, and remote / local handles. The connection status of the relays and pressure plates before parallel connection cannot be effectively monitored, and there is a monitoring blind spot.

[0005] Therefore, there is a technical problem in the prior art that the existing monitoring method cannot effectively monitor the connection status of the relay and the pressure plate in the control loop and has a monitoring blind spot. Summary of the invention

[0006] The main purpose of the present invention is to provide a relay protection tripping and closing monitoring circuit, a monitoring method and related devices to solve the technical problems in the prior art that the existing monitoring methods cannot effectively monitor the connection status of relays and pressure plates in the control circuit and have monitoring blind spots.

[0007] In order to achieve the above object, according to one aspect of the present invention, a relay protection tripping and closing monitoring circuit is provided, comprising:

[0008] A tripping control circuit, wherein the tripping control circuit comprises a tripping action contact TJ, a tripping outlet pressure plate LP1, a tripping protection relay TBJ, a circuit breaker normally open auxiliary contact DL1 and a tripping coil TQ connected in series in sequence, and a first monitoring module for monitoring the voltage at both ends of the tripping action contact TJ is connected at both ends of the tripping action contact TJ;

[0009] A closing control circuit, the closing control circuit comprises a closing action contact HJ, a closing outlet pressure plate LP2, a normally closed auxiliary contact TBJV1 of an anti-tripping relay, a closing holding relay HBJ, a normally closed auxiliary contact DL2 of a circuit breaker and a closing coil HQ which are sequentially arranged in series, and a second monitoring module for monitoring the voltage at both ends of the closing action contact HJ is connected to both ends of the closing action contact HJ;

[0010] Wherein, the opening control circuit and the closing control circuit are arranged in parallel at both ends KM and -KM of the power supply.

[0011] In some embodiments, the trip control circuit also includes a first branch and a second branch, wherein the first branch is arranged in parallel with the trip action contact TJ and the trip outlet pressure plate LP1, and the first branch includes a trip holding relay contact TBJ and a first resistor R1 arranged in series, and the second branch is arranged in parallel with the trip action contact TJ, the trip outlet pressure plate LP1, and the trip protection relay TBJ, and the second branch includes a relay HWJ and a second resistor R2 arranged in series.

[0012] In some embodiments, the closing control loop also includes a third branch and a fourth branch, wherein the third branch is arranged in parallel with the closing action contact HJ and the closing outlet pressure plate LP2, and the third branch includes a closing holding relay contact HBJ and a third resistor R3 arranged in series, and the third branch is arranged in parallel with the closing action contact HJ, the closing outlet pressure plate LP2, the normally closed auxiliary contact TBJV1 of the anti-trip relay, and the closing holding relay HBJ, and the fourth branch includes a trip monitoring relay TWJ and a fourth resistor R4 arranged in series.

[0013] In some embodiments, the closing control loop also includes a fifth branch, which is arranged in parallel with the normally closed auxiliary contact TBJV1 of the anti-tripping relay, the closing holding relay HBJ, the normally closed auxiliary contact DL2 of the circuit breaker and the closing coil HQ, and the fifth branch includes the normally open auxiliary contact TBJV2 of the anti-tripping relay and the anti-tripping relay TBJV arranged in series, and the normally open auxiliary contact TBJV2 of the anti-tripping relay is far away from the anti-tripping relay TBJV and is also connected to an end of the third resistor R3 far away from the closing holding relay contact HBJ.

[0014] According to another aspect of the present invention, the present invention also provides a relay protection tripping and closing monitoring method, comprising the following steps: collecting voltage information in the relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in the opening control circuit and second voltage information in the closing control circuit; determining fault information of the opening circuit and the closing circuit based on the voltage information; and generating control circuit warning information based on the fault information.

[0015] In some embodiments, the first voltage information is voltage information across the tripping action contact TJ, and the second voltage information is voltage information across the closing action contact HJ.

[0016] In some embodiments, determining the fault information of the opening circuit and the closing circuit based on the voltage information includes: when the first voltage information is greater than or equal to 2KM, a line break fault occurs in the opening circuit; when the second voltage information is greater than or equal to 2KM, a line break fault occurs in the closing circuit.

[0017] According to another aspect of the present invention, the present invention also provides a relay protection tripping and closing monitoring device, including: an acquisition module, used to collect voltage information in the relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in the opening control circuit and second voltage information in the closing control circuit; a determination module, which determines the fault information of the opening circuit and the closing circuit based on the voltage information; and a generation module, which generates control circuit warning information based on the fault information.

[0018] According to another aspect of the present invention, the present invention further provides a storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of any of the aforementioned relay protection tripping and closing monitoring methods are implemented.

[0019] According to another aspect of the present invention, the present invention also provides an electronic device, comprising at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any of the aforementioned relay protection tripping and closing monitoring methods when executing the computer program on the memory.

[0020] The relay protection tripping and closing monitoring circuit, monitoring method and related devices provided by the present invention are applied to set an opening control circuit and a closing control circuit, wherein the opening control circuit includes a tripping action contact TJ, a tripping outlet pressure plate LP1, a tripping protection relay TBJ, a circuit breaker normally open auxiliary contact DL1 and a tripping coil TQ, and the two ends of the tripping action contact TJ are connected to a first monitoring module; the closing control circuit includes a closing action contact HJ, a closing outlet pressure plate LP2, an anti-tripping relay normally closed auxiliary contact TBJV1, a closing holding relay HBJ, a circuit breaker normally closed auxiliary contact DL2 and a closing coil HQ, and the two ends of the closing action contact HJ are connected to a second monitoring module; by setting the first monitoring module and the second monitoring module to monitor the voltages at both ends of the closing action contact HJ and the closing action contact HJ, the whole circuit is monitored, the monitoring blind area can be eliminated, the fault signal can be discovered in time, and the secondary operation and maintenance personnel can handle it in advance to prevent the circuit breaker from refusing to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 The schematic diagram of the relay protection tripping and closing monitoring circuit provided by the present invention is shown;

[0023] Figure 2 A flow chart showing the steps of the relay protection tripping and closing monitoring method provided by the present invention is shown;

[0024] Figure 3 The structure block diagram of the relay protection tripping and closing monitoring device provided by the present invention is shown;

[0025] Figure 4 The figure shows a schematic diagram of the structure of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0026] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, but are not intended to limit the present disclosure.

[0027] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0029] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0030] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0031] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0032] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0034] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0035] The present disclosure is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] In order to solve the technical problems in the prior art that the existing monitoring methods cannot effectively monitor the connection status of relays and pressure plates in the control loop and have monitoring blind spots, the present invention provides a relay protection tripping and closing monitoring circuit, a monitoring method and related devices.

[0037] Figure 1 The schematic diagram of the relay protection tripping and closing monitoring circuit provided by the present invention is shown in FIG. Figure 1 As shown, the relay protection tripping and closing monitoring circuit includes an opening control circuit and a closing control circuit, and the opening control circuit and the closing control circuit are arranged in parallel at both ends of KM and -KM of the power supply, wherein the opening control circuit includes a tripping action contact TJ, a tripping outlet pressure plate LP1, a tripping protection relay TBJ, a circuit breaker normally open auxiliary contact DL1 and a tripping coil TQ connected in series in sequence, and the two ends of the tripping action contact TJ are connected with a first monitoring module for monitoring the voltage at both ends of the tripping action contact TJ; the closing control circuit includes a closing action contact HJ, a closing outlet pressure plate LP2, an anti-tripping relay normally closed auxiliary contact TBJV1, a closing holding relay HBJ, a circuit breaker normally closed auxiliary contact DL2 and a closing coil HQ arranged in series in sequence, and the two ends of the closing action contact HJ are connected with a second monitoring module for monitoring the voltage at both ends of the closing action contact HJ.

[0038] For ease of understanding, Figure 1 As shown, the potential of point P is +KM, which is responsible for providing positive power supply, and the potential of point Q is -KM, which is responsible for providing negative power supply. It is assumed that the contacts of the first monitoring module and the two ends of the tripping action contact TJ are M1 and M2 respectively, the contact of the tripping outlet pressure plate LP1 close to the tripping protection relay TBJ side is F1, the contact between the tripping protection relay TBJ and the normally open auxiliary contact DL1 of the circuit breaker is F2, and the contact between M1 and the power contact P in the opening control loop is provided with a contact F3, the contacts of the second monitoring module and the two ends of the closing action contact HJ are N1 and N2 respectively, the contact of the closing outlet pressure plate LP2 close to the normally closed auxiliary contact TBJV1 side of the anti-tripping relay is H1, and the normally closed auxiliary contact DL1 of the circuit breaker is H2. The contact between the auxiliary contact DL2 and the closing holding relay HBJ is H2, and in the closing control circuit, a contact H3 is provided between the contact N1 and the power supply contact P; by respectively connecting the first monitoring module and the second monitoring module at both ends of the opening contact TJ and the closing contact HJ of the monitoring circuit, the voltages of M1, M2 and N1, N2 can be monitored in real time, and by comparing the potential difference between M1, M2 and N1, N2, it can be determined whether there is a break in the control circuit, thereby realizing monitoring of the entire circuit, eliminating monitoring blind spots, and being able to promptly detect the situation of control circuit blockage and issue an alarm signal, which is convenient for secondary operation and maintenance personnel to deal with in advance and prevent the occurrence of circuit breaker refusal to operate.

[0039] Furthermore, the trip control circuit also includes a first branch and a second branch, wherein the first branch is arranged in parallel with the trip action contact TJ and the trip outlet pressure plate LP1, and the first branch includes a trip holding relay contact TBJ and a first resistor R1 arranged in series, and the second branch is arranged in parallel with the trip action contact TJ, the trip outlet pressure plate LP1, and the trip protection relay TBJ, and the second branch includes a relay HWJ and a second resistor R2 arranged in series.

[0040] Correspondingly, the closing control loop also includes a third branch and a fourth branch, wherein the third branch is arranged in parallel with the closing action contact HJ and the closing outlet pressure plate LP2, and the third branch includes a closing holding relay contact HBJ and a third resistor R3 arranged in series, and the third branch is arranged in parallel with the closing action contact HJ, the closing outlet pressure plate LP2, the normally closed auxiliary contact TBJV1 of the anti-trip relay, and the closing holding relay HBJ, and the fourth branch includes a trip monitoring relay TWJ and a fourth resistor R4 arranged in series.

[0041] Furthermore, the closing control circuit also includes a fifth branch, which is arranged in parallel with the normally closed auxiliary contact TBJV1 of the anti-tripping relay, the closing holding relay HBJ, the normally closed auxiliary contact DL2 of the circuit breaker and the closing coil HQ. The fifth branch includes the normally open auxiliary contact TBJV2 of the anti-tripping relay and the anti-tripping relay TBJV arranged in series. The normally open auxiliary contact TBJV2 of the anti-tripping relay is far away from the anti-tripping relay TBJV and is also connected to an end of the third resistor R3 far away from the closing holding relay contact HBJ.

[0042] In the process of engineering application, in the opening control circuit, the circuit breaker is in the closed position, DL1 is closed, and the outlet pressure plate LP1 is put into operation. At this time, the protection device is activated, the TJ contact is closed, and the opening control circuit is connected from +KM to -KM. TQ is activated to control the circuit breaker to open. Since the TJ outlet pulse is short, the TBJ contact in the first branch is closed after the TBJ tripping holding relay is activated, so that the opening control circuit is self-maintained in the operating state until the circuit breaker is opened, the DL1 normally open auxiliary contact is disconnected, and the opening control circuit is disconnected.

[0043] In order to monitor the integrity of the tripping circuit, a second branch, namely the HWJ closing monitoring relay, is set up, and a second resistor R2 is configured to meet the adaptability of the entire circuit resistance. When the DL1 normally open auxiliary contact is closed and the TQ tripping coil is normal, the HWJ relay operates to indicate that the tripping circuit is complete. However, it has a monitoring blind spot and cannot monitor the integrity of the first half of the circuit, the LP1 outlet pressure plate and the TBJ tripping holding relay.

[0044] In the closing control circuit, when the circuit breaker is in the open position, DL2 is closed, the outlet pressure plate LP2 is put into operation, and the TBJV anti-tripping relay does not operate, the auxiliary contact of TBJV1 is closed. At this time, the protection device operates and the HJ contact is closed. The closing control circuit is connected from +KM to -KM, and HQ operates to control the circuit breaker to close. Since the HJ outlet pulse is short, the HBJ closing holding relay operates to close the HBJ contact in the third branch, so that the closing control circuit is self-maintained and is always in the operating state until the circuit breaker is closed, the DL2 normally closed auxiliary contact is disconnected, and the closing control circuit is disconnected.

[0045] In order to monitor the integrity of the closing circuit, a fourth branch, the TWJ trip monitoring relay, is set up, and a fourth resistor R4 is configured to meet the adaptability of the entire circuit resistance. When the DL2 normally closed auxiliary contact is closed and the HQ trip coil is normal, the TWJ relay operates to indicate that the closing circuit is complete. However, there is a monitoring blind spot and it is unable to monitor the integrity of the first half of the circuit, including the LP2 outlet pressure plate, TBJV1 anti-trip contact, and HBJ trip holding relay.

[0046] From the above analysis, it can be seen that when the circuit breaker is in the open position, the DL normally closed node is closed. If there is no disconnection fault in the closing circuit, the potential difference between N1 and N2 is +2KM, otherwise the potential difference will also be 0 and +KM according to the location of the fault point; when the circuit breaker is in the closed position, the DL normally open node is closed. If there is no disconnection fault in the opening circuit, the potential difference between M1 and M2 is +2KM, otherwise the potential difference will also be 0 and +KM according to the location of the fault point, that is to say, if U(M1M2)≥+2KM, then the opening circuit is disconnected; if U(N1N2)≥+2KM, then the closing circuit is disconnected. At the same time, other points in the opening circuit and the closing circuit can also be monitored based on the potential difference, as shown in Table 1 below.

[0047] Table 1. Control loop judgment logic table

[0048]

[0049] The relay protection tripping and closing monitoring circuit provided by the present invention is applied, and an opening control circuit and a closing control circuit are set, wherein the opening control circuit includes a tripping action contact TJ, a tripping outlet pressure plate LP1, a tripping protection relay TBJ, a circuit breaker normally open auxiliary contact DL1 and a tripping coil TQ, and the two ends of the tripping action contact TJ are connected to a first monitoring module; the closing control circuit includes a closing action contact HJ, a closing outlet pressure plate LP2, an anti-tripping relay normally closed auxiliary contact TBJV1, a closing holding relay HBJ, a circuit breaker normally closed auxiliary contact DL2 and a closing coil HQ, and the two ends of the closing action contact HJ are connected to a second monitoring module; by setting the first monitoring module and the second monitoring module to monitor the voltages at both ends of the closing action contact HJ and at both ends of the closing action contact HJ, it is possible to obtain monitoring of multiple different points in the relay protection tripping and closing monitoring circuit, with a wider monitoring range, realizing monitoring of the entire circuit, eliminating monitoring blind spots, and timely discovering fault signals, which is convenient for secondary operation and maintenance personnel to handle in advance and prevent the occurrence of circuit breaker refusal to operate.

[0050] A second aspect of the present invention further provides a method for monitoring relay protection tripping and closing. Figure 2 The flowchart of the relay protection tripping and closing monitoring method provided by the present invention is shown as follows: Figure 2 As shown, the relay protection tripping and closing monitoring method comprises the following steps:

[0051] S101, collecting voltage information in a relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in an opening control loop and second voltage information in a closing control loop.

[0052] In this step, voltage information in the relay protection tripping and closing monitoring circuit is collected, wherein the voltage information includes first voltage information in the opening control loop and second voltage information in the closing control loop.

[0053] Specifically, in the opening control loop, a first monitoring module for monitoring the voltage across the tripping action contact TJ is provided at both ends of the tripping action contact TJ, and the voltage across the tripping action contact TJ is monitored by the first monitoring module, thereby obtaining the first voltage information. In the closing control loop, a second monitoring module for monitoring the voltage across the closing action contact HJ is provided at both ends of the closing action contact HJ, and the voltage across the closing action contact HJ is monitored by the second monitoring module, thereby obtaining the second voltage information.

[0054] The first monitoring module and the second monitoring module are electronic modules such as voltmeters or multimeters that can monitor voltage.

[0055] S102: Determine fault information of the opening circuit and the closing circuit based on the voltage information.

[0056] After completing the above step S101, in this step, the fault information of the opening circuit and the closing circuit is determined based on the voltage information.

[0057] Further, after obtaining the first voltage information and the second voltage information, the fault point in the opening circuit and the closing circuit can be determined based on the first voltage information and the second voltage information.

[0058] Specifically, when the first voltage information is greater than or equal to 2KM, that is, the potential difference between M1 / M2 is greater than or equal to 2KM, a disconnection fault occurs in the opening circuit; when the second voltage information is greater than or equal to 2KM, that is, the potential difference between N1 / N2 is greater than or equal to 2KM, a disconnection fault occurs in the closing circuit.

[0059] At the same time, other points in the opening circuit and the closing circuit can also be monitored based on the potential difference, as shown in Table 1 below.

[0060] Table 1. Control loop judgment logic table

[0061]

[0062] S103: Generate control loop warning information based on the fault information.

[0063] After completing the above step S102, in this step, control loop warning information is generated based on the fault information.

[0064] Specifically, after determining the fault information in the circuit, early warning information is generated based on the fault information, and the early warning information is sent to the control center. At the same time, the alarm device can also be triggered to prompt the operator to pay attention. Among them, auxiliary contacts can be set for external measurement and control devices to collect remote sensing information. When the logic calculates that the circuit is disconnected, the auxiliary contacts are closed, and the measurement and control device sends early warning messages and light signs to the monitoring machine and the main station. It can also be linked with the protection device, and the protection device sends a soft message of the control circuit disconnection.

[0065] By applying the relay protection tripping and closing monitoring method provided by the present invention, the first monitoring module and the second monitoring module are set to monitor the voltages at both ends of the closing action contact HJ and the closing action contact HJ, so that multiple different points in the relay protection tripping and closing monitoring circuit can be monitored, the monitoring range is wider, and the monitoring of the entire circuit can be achieved. It can eliminate monitoring blind spots and discover fault signals in time, which is convenient for secondary operation and maintenance personnel to handle in advance and prevent the occurrence of circuit breaker refusal to operate.

[0066] In order to better implement the above method, the third aspect of the present disclosure further provides a relay protection tripping and closing monitoring device, which can be integrated into an electronic device.

[0067] For example, Figure 3 As shown, the monitoring device 200 may include: a collection module 210, a determination module 220 and a generation module 230, which are specifically as follows:

[0068] (1) An acquisition module 210, wherein the acquisition module 210 is used to acquire voltage information in a relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in an opening control circuit and second voltage information in a closing control circuit.

[0069] (2) A determination module 220, wherein the first determination module 220 is used to determine the fault information of the opening circuit and the closing circuit based on the voltage information.

[0070] (3) A generation module 230, wherein the generation module 230 is used to generate control loop warning information based on the fault information.

[0071] Furthermore, the first voltage information is the voltage information across the tripping action contact TJ, and the second voltage information is the voltage information across the closing action contact HJ.

[0072] Furthermore, the fault information of the opening circuit and the closing circuit is determined based on the voltage information, including: when the first voltage information is greater than or equal to 2KM, a disconnection fault occurs in the opening circuit; when the second voltage information is greater than or equal to 2KM, a disconnection fault occurs in the closing circuit.

[0073] By applying the relay protection tripping and closing monitoring device provided by the present invention, the voltages at both ends of the closing action contact HJ and the voltages at both ends of the closing action contact HJ are monitored by setting a first monitoring module and a second monitoring module, so that multiple different points in the relay protection tripping and closing monitoring circuit can be monitored, and the monitoring range is wider, and the monitoring of the entire circuit can be achieved. It can eliminate monitoring blind spots and discover fault signals in time, which is convenient for secondary operation and maintenance personnel to handle in advance and prevent the occurrence of circuit breaker refusal to operate.

[0074] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0075] To this end, a third embodiment of the present disclosure provides a storage medium, which is a computer-readable medium and stores a computer program. When the computer program is executed by a processor, the method provided by the embodiment of the present disclosure is implemented, including the following steps S11 to S13:

[0076] S11, collecting voltage information in a relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in an opening control circuit and second voltage information in a closing control circuit;

[0077] S12, determining fault information of the opening circuit and the closing circuit based on the voltage information;

[0078] S13, generating control loop warning information based on the fault information.

[0079] Furthermore, when the computer program is executed by a processor, other methods provided by any of the above embodiments of the present disclosure are implemented.

[0080] By applying the relay protection tripping and closing monitoring method provided by the present invention, the first monitoring module and the second monitoring module are set to monitor the voltages at both ends of the closing action contact HJ and the closing action contact HJ, so that multiple different points in the relay protection tripping and closing monitoring circuit can be monitored, the monitoring range is wider, and the monitoring of the entire circuit can be achieved. It can eliminate monitoring blind spots and discover fault signals in time, which is convenient for secondary operation and maintenance personnel to handle in advance and prevent the occurrence of circuit breaker refusal to operate.

[0081] A fifth embodiment of the present disclosure provides an electronic device, such as Figure 4 As shown, the electronic device at least includes a memory 310 and a processor 320. The memory 310 stores a computer program. The processor 320 implements the method provided by any embodiment of the present disclosure when executing the computer program on the memory 310. Exemplarily, the method executed by the electronic device computer program is as follows:

[0082] S21, collecting voltage information in the relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in the opening control loop and second voltage information in the closing control loop;

[0083] S22, determining fault information of the opening circuit and the closing circuit based on the voltage information;

[0084] S23, generating control loop warning information based on the fault information.

[0085] In specific implementation, the acquisition module 210, the determination module 220 and the generation module 230 are all stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.

[0086] By applying the relay protection tripping and closing monitoring method provided by the present invention, the first monitoring module and the second monitoring module are set to monitor the voltages at both ends of the closing action contact HJ and the closing action contact HJ, so that multiple different points in the relay protection tripping and closing monitoring circuit can be monitored, the monitoring range is wider, and the monitoring of the entire circuit can be achieved. It can eliminate monitoring blind spots and discover fault signals in time, which is convenient for secondary operation and maintenance personnel to handle in advance and prevent the occurrence of circuit breaker refusal to operate.

[0087] The storage medium may be included in the electronic device, or may exist independently without being installed in the electronic device.

[0088] The storage medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device: obtains at least two Internet Protocol addresses; sends a connection point evaluation request including at least two Internet Protocol addresses to a connection point evaluation device, wherein the connection point evaluation device selects an Internet Protocol address from the at least two Internet Protocol addresses and returns it; receives the Internet Protocol address returned by the connection point evaluation device; wherein the obtained Internet Protocol address indicates an edge connection point in a content distribution network.

[0089] Alternatively, the storage medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device: receives a connection evaluation request including at least two Internet Protocol addresses; selects an Internet Protocol address from the at least two Internet Protocol addresses; and returns the selected Internet Protocol address; wherein the received Internet Protocol address indicates an edge connection in a content distribution network.

[0090] Computer program code for performing operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the passenger computer, partially on the passenger computer, as a separate software package, partially on the passenger computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the passenger computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0091] It should be noted that the storage medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The computer readable signal medium may also be any storage medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0092] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0093] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of a unit does not, in some cases, constitute a limitation on the unit itself.

[0094] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0095] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0096] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0097] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0098] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0099] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A relay protection tripping and closing monitoring circuit, characterized in that: include: A tripping control circuit, wherein the tripping control circuit comprises a tripping action contact TJ, a tripping outlet pressure plate LP1, a tripping protection relay TBJ, a circuit breaker normally open auxiliary contact DL1 and a tripping coil TQ connected in series in sequence, and a first monitoring module for monitoring the voltage at both ends of the tripping action contact TJ is connected at both ends of the tripping action contact TJ; A closing control circuit, the closing control circuit comprises a closing action contact HJ, a closing outlet pressure plate LP2, a normally closed auxiliary contact TBJV1 of an anti-tripping relay, a closing holding relay HBJ, a normally closed auxiliary contact DL2 of a circuit breaker and a closing coil HQ which are sequentially arranged in series, and a second monitoring module for monitoring the voltage at both ends of the closing action contact HJ is connected to both ends of the closing action contact HJ; Wherein, the opening control circuit and the closing control circuit are arranged in parallel at both ends KM and -KM of the power supply.

2. The relay protection tripping and closing monitoring circuit according to claim 1 is characterized in that: The opening control circuit also includes a first branch and a second branch, wherein the first branch is arranged in parallel with the tripping action contact TJ and the tripping outlet pressure plate LP1, and the first branch includes a tripping holding relay contact TBJ and a first resistor R1 arranged in series, and the second branch is arranged in parallel with the tripping action contact TJ, the tripping outlet pressure plate LP1, and the tripping protection relay TBJ, and the second branch includes a relay HWJ and a second resistor R2 arranged in series.

3. The relay protection tripping and closing monitoring circuit according to claim 1 is characterized in that: The closing control circuit also includes a third branch and a fourth branch, wherein the third branch is arranged in parallel with the closing action contact HJ and the closing outlet pressure plate LP2, and the third branch includes a closing holding relay contact HBJ and a third resistor R3 arranged in series, and the third branch is arranged in parallel with the closing action contact HJ, the closing outlet pressure plate LP2, the normally closed auxiliary contact TBJV1 of the anti-trip relay, and the closing holding relay HBJ, and the fourth branch includes a trip monitoring relay TWJ and a fourth resistor R4 arranged in series.

4. The relay protection tripping and closing monitoring circuit according to claim 3 is characterized in that: The closing control circuit also includes a fifth branch, which is arranged in parallel with the normally closed auxiliary contact TBJV1 of the anti-tripping relay, the closing holding relay HBJ, the normally closed auxiliary contact DL2 of the circuit breaker and the closing coil HQ. The fifth branch includes the normally open auxiliary contact TBJV2 of the anti-tripping relay and the anti-tripping relay TBJV arranged in series. The normally open auxiliary contact TBJV2 of the anti-tripping relay is far away from the anti-tripping relay TBJV and is also connected to an end of the third resistor R3 far away from the closing holding relay contact HBJ.

5. A relay protection tripping and closing monitoring method, characterized in that: The steps include: Collecting voltage information in the relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in the opening control loop and second voltage information in the closing control loop; Determine the fault information of the opening circuit and the closing circuit based on the voltage information; Control loop warning information is generated based on the fault information.

6. The relay protection tripping and closing monitoring method according to claim 5, characterized in that: The first voltage information is the voltage information across the tripping action contact TJ, and the second voltage information is the voltage information across the closing action contact HJ.

7. The relay protection tripping and closing monitoring method according to claim 5, characterized in that: Determining the fault information of the opening circuit and the closing circuit based on the voltage information includes: When the first voltage information is greater than or equal to 2KM, a disconnection fault occurs in the opening circuit; When the second voltage information is greater than or equal to 2KM, a disconnection fault occurs in the closing circuit.

8. A relay protection tripping and closing monitoring device, characterized in that: include: A collection module, used to collect voltage information in the relay protection tripping and closing monitoring circuit, wherein the voltage information includes first voltage information in the opening control loop and second voltage information in the closing control loop; A determination module, which determines fault information of the opening circuit and the closing circuit based on the voltage information; A generation module generates control loop warning information based on the fault information.

9. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the relay protection tripping and closing monitoring method according to any one of claims 5 to 7 are implemented.

10. An electronic device, comprising at least a memory and a processor, wherein a computer program is stored in the memory, wherein: The processor implements the steps of the relay protection tripping and closing monitoring method according to any one of claims 5 to 7 when executing the computer program on the memory.

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