Comprehensive protection auxiliary debugging device

Abstract

The invention relates to the technical field of relay protection, in particular to an integrated protection auxiliary debugging device. The comprehensive protection auxiliary debugging device comprises a patch board and a detection device, a plurality of wiring points are arranged in the patch board, and each wiring point is connected with one point in the comprehensive protection device; after the detection equipment is connected with the wiring points on the patch board, the working state and the fault state of a circuit in the comprehensive protection device can be detected. According to the comprehensive protection auxiliary debugging device provided by the invention, the wiring board is connected with each point location in the comprehensive protection device, and the wiring of each point location in the comprehensive protection device is gathered to the wiring board, so that the wire leading work of the contacts is carried out only when equipment is installed, and the detection device does not need to be inserted repeatedly, thereby avoiding open circuit, short circuit and the like of the terminals caused by the detection work; the problem of fault expansion caused by the fact that a certain functional action of the comprehensive protection is triggered due to mistaken touch and mistaken connection of other bypasses in the recovery process is solved; meanwhile, troubleshooting is not needed one by one, and the workload in the fault detection process is reduced.

Description

Technical Field

[0001] This invention relates to the field of relay protection technology, and in particular to an integrated protection auxiliary debugging device. Background Technology

[0002] For each front-end microcomputer integrated protection device, during long-term operation, when an internal fault occurs, it will send alarm or fault information to the control console or work site. At this time, operation and maintenance personnel are required to repair the integrated protection device. However, during the repair process, these personnel need to inspect and eliminate the fault location. In existing technologies, detecting the fault location of the integrated protection device requires checking each component and circuit within the device item by item and point by point according to its secondary schematic diagram to determine whether it is normal. Furthermore, this requires repeatedly inserting probes and other testing devices into the nodes. Due to structural limitations, it is extremely difficult to insert testing devices at each point of the integrated protection device. Repeated insertion of testing devices during the testing process can easily cause open circuits or short circuits in some terminals of the secondary circuit within the integrated protection device. During the recovery process, accidental contact or connection to other bypasses can trigger certain functions of the integrated protection device, leading to the expansion of the fault. Therefore, to address these shortcomings, an auxiliary debugging device for integrated protection devices is proposed. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an auxiliary debugging device for integrated protection systems, which solves the problem of needing to judge each component and circuit item by item and point by point during the testing of integrated protection systems. It also solves the problem that repetitive testing work can easily lead to open circuits or short circuits in a certain terminal of the secondary circuit, and that during the recovery process, accidental contact or connection to other bypasses or triggering of a certain function of the integrated protection system can lead to the expansion of the fault.

[0004] (II) Technical Solution To address the above problems, the present invention provides an integrated protection auxiliary debugging device, comprising: The system includes a power strip and a testing device. The testing device comprises a low-voltage testing module, a high-voltage testing module, a signal simulation module, and an external power supply. The power strip is mounted on the integrated protection device and has several connection points, each corresponding to a point within the integrated protection device. The connection points on the power strip allow direct connection to the points within the integrated protection device. The high-voltage testing module, connected to the point on the integrated protection device, can determine whether the integrated protection device sends closing or tripping signals. The low-voltage testing module, connected to the point on the integrated protection device, can determine whether the components within the integrated protection device are functioning normally. The signal simulation module, connected to the point on the integrated protection device, can send action signals to the integrated protection device. All three modules—low-voltage, high-voltage, and signal simulation—are connected to an external power supply.

[0005] Preferably, the high-voltage detection module includes a trip detection unit and a closing detection unit. The trip detection unit can issue a prompt signal after receiving a trip signal; the closing detection unit can issue a prompt signal after receiving a closing signal.

[0006] Preferably, each of the trip detection unit and the closing detection unit is provided with an anti-synchronization circuit to prevent the trip detection unit and the closing detection unit from operating simultaneously.

[0007] Preferably, the trip detection unit has a trip circuit anti-synchronization pressure plate in its anti-synchronization circuit; the closing detection unit has a closing circuit anti-synchronization pressure plate in its anti-synchronization circuit.

[0008] Preferably, the trip detection unit is equipped with a remote trip structure; the closing detection unit is equipped with a remote closing structure.

[0009] Preferably, the low-voltage detection module includes a trip detection unit, a closed monitoring unit, and a control circuit disconnection detection unit.

[0010] Preferably, the structure of the jump position detection unit, the position monitoring unit, and the control loop disconnection detection unit is the same as that of the integrated protection device.

[0011] (III) Beneficial Effects The integrated protection auxiliary debugging device provided by this invention connects to various points within the integrated protection device via a power strip, consolidating the wiring of each point within the integrated protection device onto the power strip. Only one wiring operation is required during device installation. During fault diagnosis of the integrated protection device, the device can be directly connected to the power strip to connect to the points within the integrated protection device, eliminating the need to repeatedly insert testing devices into the integrated protection device. This avoids the problems of repeated testing work leading to open circuits or short circuits in secondary circuit terminals, accidental contact or connection to other bypass circuits during recovery, or triggering of certain functions of the integrated protection device, which could exacerbate the fault. Simultaneously, through high-voltage detection modules, low-voltage detection modules, and signal simulation modules, fault locations within the integrated protection device can be eliminated module by module, eliminating the need for individual, point-by-point fault diagnosis, thus reducing the workload during the fault detection process of the integrated protection device. Attached Figure Description

[0012] Figure 1 This is a circuit diagram of the high-voltage detection module of the integrated protection auxiliary debugging device of the present invention; Figure 2 This is a circuit diagram of the low-voltage detection module of the integrated protection auxiliary debugging device of the present invention; Figure 3 This is an example of the internal wiring diagram of an existing integrated protection device. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] In the description of this invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top", and "bottom" are based on the orientation or positional relationship shown in the accompanying drawings. The purpose is only to facilitate the description of this invention and to simplify the description. It is not intended to indicate or imply that the component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention. Example

[0015] like Figure 1-2 As shown, the present invention provides an integrated protection auxiliary debugging device, specifically comprising: The device includes a power strip and testing equipment. The testing equipment comprises a low-voltage testing module, a high-voltage testing module, a signal simulation module, and an external power supply. All three modules are connected to the external power supply, which provides separate power to each module in the testing device. During testing and inspection, the device does not require connection to the integrated protection device or to any field power source, preventing any impact on the integrated protection device or field circuits. The testing process does not intersect with the operating circuits and does not affect the safe operation of the AC and DC circuits at the work site.

[0016] The junction box is installed on the integrated protection device. The junction box has several connection points, each corresponding to a specific point within the integrated protection device. These connection points allow direct connection to the points within the integrated protection device. The junction box consolidates all points within the integrated protection device, eliminating the need to repeatedly insert inspection tools into each point during inspection. Only the connecting wires need to be connected to the corresponding positions on the junction box, avoiding the impact of repeated plugging and unplugging of the inspection device on the stable operation of the integrated protection device. Because repeated plugging and unplugging of the integrated protection device is eliminated, it prevents bridging of multiple terminals during the plugging and unplugging process, which could lead to open circuits or short circuits. It also prevents accidental contact with other bypasses during recovery, thus avoiding the activation of other protection functions within the integrated protection device and preventing the escalation of accidents. Normally, when installing the power strip for the first time, you only need to connect the wires to the various points in the integrated protection device and then connect them to the power strip. After that, when performing maintenance and repair on the integrated protection device, you can use the power strip to connect to the points in the integrated protection device.

[0017] After the high-voltage detection module is connected to the point of the integrated protection device, it can determine whether the integrated protection device sends closing and tripping signals. After connecting the high-voltage monitoring module to the point to be checked on the terminal block, if the closing and tripping signal generator in the integrated protection device is normal, the signal will be transmitted to the high-voltage detection module through the connection point on the terminal block. Based on the operation of the integrated protection device and the signal received by the high-voltage detection module, it can be determined whether the corresponding signal generator is faulty.

[0018] The high-voltage detection module includes a trip detection unit and a closing detection unit. The trip detection unit issues a warning signal upon receiving a trip signal; the closing detection unit issues a warning signal upon receiving a closing signal. The trip detection unit includes a trip indicator light LD1, a main trip relay TJ1, and a trip holding relay TJ2. When the main trip relay TJ1 receives a trip signal, all switches on TJ1 activate. When the trip signal disappears, the main trip relay TJ1 and its contacts reset. The trip holding relay TJ2 activates upon receiving a signal and remains activated until power is cut off. The closing detection unit includes a closing indicator light HD1, a main closing relay HJ1, and a closing holding relay HJ2. When the main closing relay HJ1 receives a closing signal, all switches on HJ1 activate. When the closing signal disappears, the main closing relay HJ1 and its contacts reset. The closing holding relay HJ2 activates upon receiving a signal and remains activated until power is cut off.

[0019] The trip holding relay TJ2 is controlled by a normally open contact of TJ1 and TJ2 connected in parallel before TJ1, and a normally closed contact of the main closing relay HJ1 is connected after TJ2. The trip indicator light LD1 is connected after TJ2 to a normally open contact of TJ2. The closing holding relay HJ2 is controlled by a normally open contact of HJ1 and HJ2 connected in parallel before HJ2, and a normally closed contact of the main trip relay TJ1 is connected after HJ2. The closing indicator light HD1 is connected after HJ2 to a normally open contact of HJ2. When current is input from TJ1, TJ1 activates and connects TJ2. After TJ2 activates, the external power supply forms a circuit with TJ2, keeping TJ2 connected. TJ2 then keeps the trip indicator light LD1 on, and the external power supply forms a circuit with LD1, causing LD1 to light up. When current is input from HJ1, HJ1 activates and connects HJ2. After HJ2 activates, the external power supply forms a circuit with HJ2, keeping HJ2 connected. HJ2 then keeps the trip indicator light HD1 on, and the external power supply forms a circuit with LD1, causing HD1 to light up. During operation, when judging a trip signal, connect TJ1 to the trip signal output terminal of the integrated protection device and observe whether LD1 lights up to determine if a trip signal is input. When judging a closing signal, connect HJ1 to the closing signal output terminal of the integrated protection device and observe whether HJ1 lights up to determine if a closing signal is input. The trip holding relay TJ2 is connected to a normally closed contact of the main closing relay HJ1, and the closing holding relay HJ2 is connected to a normally closed contact of the main trip relay TJ1. When HJ1 operates, it directly cuts off the path of TJ2, causing LD1 to turn off. When TJ1 operates, it directly cuts off the path of HJ2, causing HD1 to turn off, preventing LD1 and HD1 from lighting up simultaneously during testing.

[0020] It is important to note that each of the trip detection unit and the closing detection unit is equipped with an anti-synchronization circuit to prevent simultaneous operation of the trip detection unit and the closing detection unit. A closing circuit anti-synchronization pressure plate HLP is located between HJ1 and the closing signal input contact, and a trip circuit anti-synchronization pressure plate TLP is located between TJ1 and the trip signal input contact. HLP and TLP are disconnect-then-close contacts; after the signal passes through HLP and TLP, HLP and TLP will close to transmit the signal. After a period of time, HLP and TLP will gradually open to prevent mutual interference between the two circuits and signals when the closing signal detection circuit and the trip signal detection circuit are used alternately during operation, which could lead to malfunction of the detection device.

[0021] Normally, TJ1 is equipped with a remote tripping structure, which is connected to the normally closed contact of the tripping button of the integrated protection device to test the total tripping signal of the integrated protection device; HJ1 is equipped with a remote closing structure, which is connected to the normally closed contact of the closing button of the integrated protection device to test the total closing signal of the integrated protection device.

[0022] The low-voltage detection module, after being connected to a point on the integrated protection device, can determine whether the components within the integrated protection device are functioning normally. The low-voltage detection module includes a trip detection unit, a close monitoring unit, and a control loop disconnection detection unit, which are used to determine whether the functions of each plug-in and module within the main unit are normal. The trip monitoring unit tests whether the trip signal within the module is normal, the close monitoring unit tests whether the close signal within the module is normal, and the control loop disconnection detection unit detects whether the module is functioning normally. Each trip monitoring unit has a trip detection light, each close detection unit has a close detection light, and each control loop disconnection detection unit has a disconnection detection light. Normally, the trip detection light is on by default, while the close and disconnection detection lights are off by default. By connecting the units within the low-voltage detection module to the target being tested and observing the brightness of the detection lights within the units, the operating status of the target circuit can be determined.

[0023] The structures within the jump detection unit, the alignment monitoring unit, and the control loop disconnection detection unit are identical to those within the integrated protection device. Connecting the detection units to both ends of the target using circuits of the same structure ensures that the detection units and the target operate under the same conditions, thereby improving the device's testing accuracy.

[0024] After the signal simulation module is connected to the point of the integrated protection device, it can send an action signal into the integrated protection device. By connecting the signal simulation module to the point on the integrated protection device and inputting an electrical signal into the integrated protection device, the integrated protection device will take action according to the signal after receiving the signal. In order not to affect the normal operation of the integrated protection device, usually only the signal simulation module is connected to the signal receiving part of the integrated protection device. When the signal receiving part receives current, it will display the action position on the integrated protection screen, but the other parts of the integrated protection will continue to work. Example

[0025] like Figure 1-3 As shown, taking a certain type of integrated protection device as an example, the working steps of the testing device when testing the integrated protection device are explained.

[0026] Low-voltage testing: Step 1: Connect the connection point of the low-voltage detection module in the detection device to the connection point with the same number in the integrated protection device. At this time, the working environment of the low-voltage monitoring module is the same as the working environment of the circuit being detected in the integrated protection device.

[0027] Step 2: Observe the detection lights in the low-voltage detection module and determine whether it is in the default state based on the status of each detection light.

[0028] Step 3: Observe whether the working status of the circuit under test in the integrated protection device matches the test results. If they match, the target circuit is fault-free; otherwise, there is a fault in the target circuit.

[0029] Trip signal judgment process: Step 1: Connect the 512 or 33 connection point in the integrated protection device to the 512 connection point in the testing device.

[0030] Step 2: Control the integrated protection device to send a trip signal. At this time, the trip signal is sent from the trip button TA1 or TA2 of the integrated protection device to point 107, and then enters the detection device through points 511, 512 and 33. In the detection device, the current first passes through TJ1, causing TJ1 to operate. At this time, the normally open contact of TJ1 before TJ2 operates to form a circuit. After the circuit is formed, TJ2 operates and closes the normally open contact of TJ2 to keep TJ2 in the operating state. The normally open contact of TJ2 after LD1 closes with the operation of TJ2 to form a circuit and make LD1 light up.

[0031] Step 3: Determine whether the trip signal transmitting device in the integrated protection device is faulty based on the brightness of LD1. If LD1 is lit, the trip signal transmitting device in the integrated protection device is working normally; otherwise, it is faulty.

[0032] Close signal judgment process: Step 1: Connect the 103 or 513 connection point in the integrated protection device to the 513 connection point in the testing device.

[0033] Step 2: Control the integrated protection device to send a closing signal. At this time, the closing signal is sent from the closing button HA1 or HA2 of the integrated protection device to point 103, and then enters the detection device through points 213 and 3. In the detection device, the current first passes through HJ1, causing HJ1 to operate. At this time, the normally open contact of HJ1 before HJ2 operates to form a circuit. After the circuit is formed, HJ2 operates and closes the normally open contact of HJ2 to keep HJ2 in the operating state. The normally open contact of HJ2 after HD1 closes with the operation of HJ2 to form a circuit and make HD1 light up.

[0034] Step 3: Determine whether the closing signal transmitting device in the integrated protection device is faulty based on the brightness of HD1. If HD1 is lit, the closing signal transmitting device in the integrated protection device is working normally; otherwise, it is faulty.

[0035] Spring unstored energy response test: Connect the signal simulation module to connection point CZ:26 of the integrated protection device and send an electrical signal. After passing through CZ:36, the electrical signal is transmitted along points 508 and 516 to point 102. The display of the integrated protection device will show a 'Spring not stored energy' signal. If the display of the integrated protection device responds promptly after the simulation signal is sent, it proves that the spring energy storage circuit is working normally and without fault. If there is no response after the simulation signal is sent, it proves that the circuit is faulty.

[0036] Handcart test position and working position judgment test: After connecting the signal simulation module to the ZC:52 connection point of the integrated protection device, an electrical signal is sent. Based on the open / closed states of switches S9 and S8, signals are sent from points 702 and 703 respectively to the processor of the integrated protection device, and the display of the integrated protection device will show the signal source location. Then, by comparing the open / closed states of switches S9 and S8 with the signal position on the display, if the signal position on the display corresponds to the closed state of the switches, the integrated protection device can correctly determine the working position and test position of the handcart; otherwise, the integrated protection device is faulty.

[0037] Remote signal blocking test: Connect the signal simulation module to both sides of the QK switch and send a simulated signal. The signal is sent to the display of the integrated protection device through point 711, indicating that the remote signal blocking action has been activated. By comparing the working status of the signal simulation module with the signal displayed on the integrated protection device's display, if the two match, the remote signal blocking circuit is working normally; otherwise, the circuit is faulty.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A comprehensive protection auxiliary debugging device, characterized in that, include: The system includes a power strip and a testing device. The testing device comprises a low-voltage testing module, a high-voltage testing module, a signal simulation module, and an external power supply. The power strip is mounted on the integrated protection device and has several connection points, each corresponding to a point within the integrated protection device. The connection points on the power strip allow direct connection to the points within the integrated protection device. The high-voltage testing module, connected to the point on the integrated protection device, can determine whether the integrated protection device sends closing or tripping signals. The low-voltage testing module, connected to the point on the integrated protection device, can determine whether the components within the integrated protection device are functioning normally. The signal simulation module, connected to the point on the integrated protection device, can send action signals to the integrated protection device. All three modules—low-voltage, high-voltage, and signal simulation—are connected to an external power supply.

2. The integrated protection auxiliary debugging device according to claim 1, characterized in that, The high-voltage detection module includes a trip detection unit and a closing detection unit. The trip detection unit can issue a prompt signal after receiving a trip signal; the closing detection unit can issue a prompt signal after receiving a closing signal.

3. The integrated protection auxiliary debugging device according to claim 2, characterized in that, Each of the trip detection unit and the closing detection unit is equipped with an anti-synchronization circuit to prevent the trip detection unit and the closing detection unit from operating simultaneously.

4. The integrated protection auxiliary debugging device according to claim 3, characterized in that, The trip detection unit has a trip circuit anti-synchronization pressure plate in its anti-synchronization circuit; the closing detection unit has a closing circuit anti-synchronization pressure plate in its anti-synchronization circuit.

5. The integrated protection auxiliary debugging device according to any one of claims 2-4, characterized in that, The trip detection unit is equipped with a remote trip structure; the closing detection unit is equipped with a remote closing structure.

6. The integrated protection auxiliary debugging device according to claim 1, characterized in that, The low-voltage detection module includes a jump position detection unit, a closed position monitoring unit, and a control circuit disconnection detection unit.

7. The integrated protection auxiliary debugging device according to claim 1, characterized in that, The structure of the jump detection unit, the position monitoring unit, and the control circuit disconnection detection unit is the same as that of the integrated protection device.

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