Relay protection tester for power failure simulation test

Abstract

The invention belongs to the technical field of power testing, and discloses a relay protection tester for a power fault simulation test, which comprises a shell, a control end, a circuit board, a connecting end and a conducting rod, and is characterized in that one end of the conducting rod is sleeved in the shell, and the other end of the conducting rod is electrically connected with the connecting end. Replacement of different detection circuits can be realized through rotation adjustment, multiple fault detection can be quickly realized, the moving state of the contact plate is controlled in the rotation process by matching with the built-in magnetic ring and the magnetic block and utilizing the homopolar mutual exclusion mode and the elasticity of the spring, on one hand, stable clamping is maintained when the contact plate is in contact with the conducting rod, and on the other hand, the contact plate is clamped stably; and on the other hand, the contact plate is enabled to rotate in a non-contact manner during rotation, the rotation friction is reduced, the service life is prolonged, stable and reliable conductive detection can still be maintained in multiple adjustment and detection processes, the actual test convenience is high, the stability is good, and the service life is long.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power testing, and in particular relates to a relay protection tester for electric power fault simulation testing. Background Art

[0002] The relay protection tester for power fault simulation test is a device used to simulate various fault conditions in the power system to test and verify whether the relay protection equipment (such as relays, protection devices, etc.) can respond correctly and perform the predetermined operations. It is widely used in the commissioning, maintenance and safety verification of the power system.

[0003] The relay protection tester for power fault simulation test in the prior art is usually used with the relay protection device to be tested during use. By plugging the access ends of the relay protection device to be tested into different sockets on the tester respectively and cooperating with the control operation of the control switch, different fault tests under different lines are simulated. However, for multiple fault simulation tests, multiple groups of lines and interfaces are usually required, and it is often necessary to repeatedly plug and unplug the access ends of the relay protection device to be tested and replace the detection lines of different faults. However, the reciprocating plug-in and unplug-in operation is cumbersome, there is a possibility of wrong insertion, and the reciprocating plug-in and unplug-in causes great wear. On the one hand, the operation is cumbersome, and on the other hand, the connection stability is poor, and the service life is reduced at the same time, and the comprehensive test effect is not good. Summary of the invention

[0004] The object of the present invention is to provide a relay protection tester for power fault simulation testing to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a relay protection tester for power fault simulation test, comprising a shell, a control end, a circuit board, a connection end and a conductive rod, one end of the conductive rod is sleeved inside the shell, and the other end is electrically connected to the connection end, the conductive rods are distributed around the shell at equal intervals, a distribution component is rotatably installed on the front of the shell, an electrical connection component is fixedly nested inside the distribution component, the conductive rod is located on the rotation path of the electrical connection component, and an extrusion component is fixedly provided on the front of the distribution component. The distribution assembly comprises a mounting ring, an intermediate plate and a rotating shaft. The mounting ring and the intermediate plate are fixedly connected in the mounting ring. The rotating shaft is fixedly connected to the intermediate plate and is rotatably sleeved on the front side of the shell.

[0006] Preferably, the control end, the circuit board and the connecting end are all fixed inside the shell, the control end, the circuit board and the connecting end are electrically connected in sequence, and the connecting end is electrically connected to the conductive rod.

[0007] Preferably, an annular groove is provided on the front side of the shell, and magnetic blocks are nested inside the annular groove. The magnetic blocks and the conductive rods are alternately distributed. A marking groove is provided on the front side of the shell, and the marking groove corresponds to the conductive rod.

[0008] Preferably, the mounting ring is rotatably sleeved in the ring groove, and the electrical connection assembly includes a power-on head, a movable rod, a contact plate, a spring, and a magnetic ring. The power-on head is fixedly nested in the inner side surface of the mounting ring, one end of the movable rod is movably sleeved in the power-on head, and the other end is fixedly connected to the contact plate, the spring is fixedly connected between the contact plate and the power-on head, and the magnetic ring is fixedly sleeved on the outer side surface of the contact plate.

[0009] Preferably, the extrusion assembly includes an elastic airbag ring, a connecting groove, a connecting sleeve, a threaded rod and a piston plate, the elastic airbag ring is fixedly sleeved in the front face of the mounting ring, the connecting groove is opened in the middle plate and is connected to the inside of the elastic airbag ring, the connecting sleeve is fixedly connected to the front face of the middle plate and is connected to the connecting groove, the threaded rod is threadedly sleeved in the front face of the connecting sleeve, and the piston plate is movably sleeved in the connecting sleeve and fixedly connected to the threaded rod.

[0010] Preferably, a mounting sleeve hole is provided on the front side of the shell, and a No. 1 hole and a No. 2 hole are provided on the top surface and the front side of the shell respectively, and the outer ends of the No. 1 hole and the No. 2 hole are threadedly sleeved with sealing plugs, the mounting sleeve hole is rotatably sleeved with the rotating shaft, and a retaining ring is fixedly sleeved on the outer side surface of the rotating shaft, and the retaining ring is rotatably sleeved in the shell.

[0011] Preferably, a protective part is fixedly connected to the front side of the shell, and the protective part includes a connecting frame and a damping pad. The connecting frame is fixedly connected to the front side of the shell, and the damping pad is fixedly connected to the inner side of the connecting frame. The conductive rods are symmetrically distributed on both sides of the protective part.

[0012] Preferably, a combined blower assembly is provided inside the shell, and the combined blower assembly includes a connecting shaft, a mounting shaft, a positioning block, gear one, gear two and blades, the connecting shaft is fixedly connected to the rotating shaft, the positioning block is fixedly connected in the No. 2 hole, the mounting shaft is rotatably sleeved in the positioning block through a bearing, the gear one is fixedly sleeved on the outer surface of the connecting shaft, the gear two is fixedly sleeved on the outer surface of the mounting shaft, the gear one and gear two are meshingly connected, and the blade is fixedly sleeved on the mounting shaft and is located in the No. 2 hole.

[0013] The beneficial effects of the present invention are as follows: (1) The present invention utilizes the coordinated action of the distribution component, the conductive rod and the electrical connection component to realize the position switching of the two ends of the relay protection device to be tested by rotating the distribution component. By changing the contact state of the electrical connection component with different groups of conductive rods and cooperating with different control detection circuits connected to different conductive rods, the rapid switching of different fault simulation detections is realized. It is impossible to repeatedly plug and unplug. Only by rotating and adjusting, different detection circuits can be replaced, and multiple fault detections can be quickly realized. In addition, by cooperating with the built-in magnetic ring and the magnetic block, the same poles repel each other, and the elasticity of the spring, the movement state of the contact plate is controlled during the rotation process. On the one hand, it maintains stable clamping when in contact with the conductive rod, thereby improving the stability after the conductive adjustment. On the other hand, when it is turned away, the contact plate rotates without contact, thereby reducing rotational friction and improving the service life. Stable and reliable conductive detection can still be maintained during multiple adjustment and detection processes. The actual test is convenient, stable and has a long service life.

[0014] (2) The present invention utilizes the extrusion component on the distribution component and cooperates with the extrusion effect of the extrusion component. After the access end of the relay protection device to be tested is inserted, the hydraulic action under the rotation effect promotes the inflation of the elastic airbag ring and wraps and clamps the outer side of the squeezed end. After insertion, further clamping and fixing are achieved, further avoiding the line from falling off during the plug-in simulation test, improving the test stability, especially when dynamically switching between different test states, improving the stability of dynamic adjustment, and achieving good use effect.

[0015] (3) The present invention reuses the rotation effect of the distribution component. After multiple tests, the manual wave distribution component is continuously rotated to drive the combined blower component to rotate during the rotation process. The meshing effect of gear 1 and gear 2 in the combined blower component and the effect of the gear ratio are utilized to achieve rapid rotation of gear 2 under manual rotation, thereby utilizing the rotation of the blades. The rotating blades cooperate with the No. 1 and No. 2 holes to achieve the suction of ambient air and the blowing of internal hot air, thereby completing the internal short-term heat dissipation. No additional electric drive is required, and simple and effective heat dissipation treatment is achieved by relying on the distribution component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional schematic diagram of the present invention; Figure 3 A schematic diagram of a distribution assembly and a combined air blowing assembly of the present invention; Figure 4 A cross-sectional schematic diagram of a distribution assembly of the present invention; Figure 5 for Figure 4 A schematic diagram of the structure enlargement at the center A; Figure 6 for Figure 4 A schematic diagram of the structure enlarged at B in the middle; Figure 7 It is a front schematic diagram of the housing of the present invention; Figure 8 It is a cross-sectional schematic diagram of the housing of the present invention.

[0017] In the figure: 1. shell; 2. control end; 3. circuit board; 4. connection end; 5. conductive rod; 6. distribution assembly; 61. mounting ring; 62. middle plate; 63. rotating shaft; 7. protection part; 8. electrical connection assembly; 81. power-on head; 82. movable rod; 83. contact plate; 84. spring; 85. magnetic ring; 9. magnetic block; 10. marking groove; 11. ring groove; 12. mounting sleeve hole; 13. extrusion assembly; 131. elastic air bag ring; 132. connecting groove; 133. connecting sleeve; 134. threaded rod; 135. piston plate; 14. combined blast assembly; 141. connecting shaft; 142. mounting shaft; 143. positioning block; 144. gear one; 145. gear two; 146. blade; 15. hole number one; 16. hole number two. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 As shown, an embodiment of the present invention provides a relay protection tester for power fault simulation test, including a shell 1, a control terminal 2, a circuit board 3, a connection terminal 4 and a conductive rod 5, one end of the conductive rod 5 is sleeved inside the shell 1, and the other end is electrically connected to the connection terminal 4, the conductive rods 5 are distributed around the shell 1 at equal intervals, a distribution component 6 is rotatably installed on the front of the shell 1, an electrical connection component 8 is fixedly nested inside the distribution component 6, the conductive rod 5 is located on the rotation path of the electrical connection component 8, an extrusion component 13 is fixedly provided on the front of the distribution component 6, the distribution component 6 includes a mounting ring 61, an intermediate plate 62 and a rotating shaft 63, the mounting ring 61, the intermediate plate 62 is fixedly connected in the mounting ring 61, the rotating shaft 63 is fixedly connected to the intermediate plate 62, and is rotatably sleeved on the front of the shell 1.

[0020] Embodiment 1: When in use, the two ends of the relay protection device to be tested are respectively inserted along the front of the distribution component 6 in the tester, and the two end plugs of the relay protection device to be tested are respectively inserted into the power supply heads 81 of the two sets of electrical connection components 8, and the middle plate 62 in the distribution component 6 is rotated to drive the mounting ring 61 to rotate and change its position in the ring groove 11. When the contact plate 83 in the electrical connection component 8 deflects to the end of the corresponding set of conductive rods 5, the elasticity of the spring 84 pushes the contact plate 83 to move and press against the end face of the corresponding conductive rod 5 to complete the electrical connection. The start button on the front of the housing 1 is used to realize Corresponding to the simulation test under the control circuit, when a set of tests is completed, the distribution component 6 is rotated again, and as the mounting ring 61 drives the electrically plugged electrical connection component 8 to rotate, the contact plate 83 drives the outer magnetic ring 85 to deflect, and when passing through the magnetic block 9, the repulsive force of the magnetic block 9 pushes the magnetic ring 85 and the contact plate 83 to compress the spring 84, and the damping rotation damping disappears. When the rotation to the target conductive rod 5 is completed, the repulsive force of the magnetic block 9 disappears, and the contact plate 83 moves and presses on the corresponding conductive rod 5, completing the connection of another set of detection circuits, starting the control button on the front of the shell 1, and performing another set of test simulations.

[0021] Firstly, by utilizing the cooperation of the distribution component 6, the conductive rod 5 and the electrical connection component 8, the position switching of the two ends of the relay protection device to be tested is achieved by rotating the distribution component 6, and by changing the contact state of the electrical connection component 8 with different groups of conductive rods 5, and cooperating with different control detection circuits connected to different conductive rods 5, fast switching of different fault simulation detections is achieved. It is impossible to plug and unplug repeatedly, and different detection circuits can be replaced only by rotation adjustment, and multiple fault detections can be quickly realized. In addition, in conjunction with the cooperation of the built-in magnetic ring 85 and the magnetic block 9, the mutual repulsion of the same poles and the elasticity of the spring 84 are utilized to control the movement state of the contact plate 83 during the rotation process. On the one hand, stable clamping is maintained when in contact with the conductive rod 5, thereby improving the stability after the adjustment of the conductivity. On the other hand, the contact plate 83 is allowed to rotate without contact when turned away, thereby reducing rotational friction and improving the service life. Stable and reliable conductive detection can still be maintained during multiple adjustment and detection processes. The actual test is convenient, stable and has a long service life.

[0022] Example 2: When the access end of the relay protector to be tested is sleeved on the front side of the mounting ring 61, the port is sleeved inside the elastic airbag ring 131 in the extrusion assembly 13. Before rotation adjustment, the threaded rod 134 in the extrusion assembly 13 is independently rotated to drive the piston plate 135 to rotate and extrude along the inside of the connecting sleeve 133, compressing the internal hydraulic oil and further compressing it into the elastic airbag ring 131 through the connecting groove 132, so that the elastic airbag ring 131 further expands and wraps around the outside of the access end of the relay protector to be tested, completing the wrapping and clamping.

[0023] First, by utilizing the extrusion component 13 on the distribution component 6 and cooperating with the extrusion effect of the extrusion component 13, after the access end of the relay protection device to be tested is inserted, the elastic airbag ring 131 is pushed to inflate through the hydraulic action under the rotation effect, and is wrapped and clamped on the outside of the squeezed end, and further clamped and fixed after insertion, further avoiding the line from falling off during the plug-in simulation test, improving the test stability, especially when dynamically switching between different test states, improving the stability of dynamic adjustment, and having a good use effect.

[0024] Embodiment 3: When performing detection, unscrew the corresponding sealing plugs on hole No. 15 and hole No. 2, 16. After completing multiple sets of power-on fault detection, quickly rotate the distribution component 6 manually, so that the distribution component 6 drives the connecting shaft 141 in the combined air blowing component 14 to rotate, and makes gear 1 144 rotate. Gear 1 144 drives gear 2 145 with a small number of teeth to rotate quickly. As gear 2 145 rotates, it also drives the mounting shaft 142 and blade 146 to rotate. Blade 146 rotates in hole No. 2 16 and draws air, sucking in ambient air and inputting it into the interior of the shell 1, blowing the interior, and the internal hot air is output through hole No. 15 to complete active heat dissipation.

[0025] First, by utilizing the rotation effect of the distribution component 6 again, after multiple tests, the manual wave distribution component 6 is continuously rotated to drive the combined blower component 14 to rotate during the rotation process, and the meshing action of gear 1 144 and gear 2 145 in the combined blower component 14 is utilized, and the effect of the gear ratio is utilized. Under manual rotation, the rapid rotation of gear 2 145 is achieved, thereby utilizing the rotation of blade 146, utilizing the rotating blade, and cooperating with hole 15 and hole 2 16 to achieve the suction of ambient air and the blowing of internal hot air, thereby completing the internal short-term heat dissipation without the need for additional electric drive, and relying on the distribution component 6 to achieve simple and effective heat dissipation treatment.

[0026] Among them, the control terminal 2 , the circuit board 3 and the connecting terminal 4 are all fixed inside the housing 1 , the control terminal 2 , the circuit board 3 and the connecting terminal 4 are electrically connected in sequence, and the connecting terminal 4 is electrically connected to the conductive rod 5 .

[0027] By cooperating with the existing control terminal 2, circuit board 3 and connection terminal 4 and the conductive rod 5, the integrated arrangement of different fault test circuits is realized. By cooperating with different groups of conductive rods 5, different fault simulation test circuits are built into the circuit board 3 to complete the integrated different fault simulation detection.

[0028] Among them, a ring groove 11 is opened on the front side of the shell 1, and magnetic blocks 9 are nested inside the ring groove 11. The magnetic blocks 9 and the conductive rods 5 are alternately distributed. A marking groove 10 is provided on the front side of the shell 1, and the marking groove 10 corresponds to the conductive rod 5.

[0029] The annular groove 11 is used to adapt to the rotational assembly of the distribution assembly 6, so as to facilitate adjustment.

[0030] Among them, the mounting ring 61 is rotatably sleeved in the ring groove 11, and the electrical connection component 8 includes a power-on head 81, a movable rod 82, a contact plate 83, a spring 84, and a magnetic ring 85. The power-on head 81 is fixedly nested in the inner side surface of the mounting ring 61, one end of the movable rod 82 is movably sleeved in the power-on head 81, and the other end is fixedly connected to the contact plate 83, the spring 84 is fixedly connected between the contact plate 83 and the power-on head 81, and the magnetic ring 85 is fixedly sleeved on the outer side surface of the contact plate 83.

[0031] The electrical connection component 8 realizes the insertion of the terminal in the relay protector to be tested and completes the electrical connection, and cooperates with the distribution component 6 to drive the rotation of the relay protector terminal. When contacting with different conductive rods 5, different lines are connected and different fault simulation detections are completed. The spring 84 facilitates elastic reset, pushes the contact plate 83 to stably contact with the conductive rod 5, and cooperates with the magnetic ring 85 and the magnetic block 9 to separate in the non-electrical area to reduce friction.

[0032] Among them, the extrusion assembly 13 includes an elastic airbag ring 131, a connecting groove 132, a connecting sleeve 133, a threaded rod 134 and a piston plate 135. The elastic airbag ring 131 is fixedly sleeved in the front of the mounting ring 61, the connecting groove 132 is opened in the middle plate 62 and is connected to the inside of the elastic airbag ring 131, the connecting sleeve 133 is fixedly connected to the front of the middle plate 62 and is connected to the connecting groove 132, the threaded rod 134 is threadedly sleeved on the front of the connecting sleeve 133, and the piston plate 135 is movably sleeved in the connecting sleeve 133 and is fixedly connected to the threaded rod 134.

[0033] By utilizing the extrusion assembly 13 to insert the line end, the inserted line end is tightened and fixed by rotating and extruding, thereby avoiding the line from coming off and providing stability for power-on detection, especially for the dynamic adjustment process, with more stable continuous multiple tests.

[0034] Among them, a mounting sleeve hole 12 is opened on the front side of the shell 1, and a No. 1 hole 15 and a No. 2 hole 16 are opened on the top surface and the front side of the shell 1 respectively. The outer ends of the No. 1 hole 15 and the No. 2 hole 16 are threadedly sleeved with sealing plugs, the mounting sleeve hole 12 is rotatably sleeved with the rotating shaft 63, and the outer side surface of the rotating shaft 63 is fixedly sleeved with a retaining ring, which is rotatably sleeved in the shell 1.

[0035] A heat dissipation channel is formed by utilizing the No. 1 hole 15 and the No. 2 hole 16, which is sealed when not in use and opened when heat dissipation is required, and cooperates with the combined air blowing component 14 to achieve active heat dissipation with a fixed time and intensity.

[0036] Among them, a protective part 7 is fixedly connected to the front of the shell 1, and the protective part 7 includes a connecting frame and a damping pad. The connecting frame is fixedly connected to the front of the shell 1, and the damping pad is fixedly connected to the inner side of the connecting frame. The conductive rods 5 are symmetrically distributed on both sides of the protective part 7.

[0037] Through the damping effect and position control of the protective part 7, when not in use, the insertion port can be hidden and protected by adjusting the position of the distribution component 6. In combination with the hiding of the conductive rod 5 by the distribution component 6, full hidden protection is achieved, providing a cleaner, longer-lasting and stable power-on test effect.

[0038] Among them, a combined blowing assembly 14 is provided inside the shell 1, and the combined blowing assembly 14 includes a connecting shaft 141, a mounting shaft 142, a positioning block 143, a gear 144, a gear 2 145 and a blade 146. The connecting shaft 141 is fixedly connected to the rotating shaft 63, the positioning block 143 is fixedly connected in the No. 2 hole 16, the mounting shaft 142 is rotatably sleeved in the positioning block 143 through a bearing, the gear 144 is fixedly sleeved on the outer surface of the connecting shaft 141, the gear 2 145 is fixedly sleeved on the outer surface of the mounting shaft 142, the gear 144 and the gear 2 145 are meshed and connected, and the blade 146 is fixedly sleeved on the mounting shaft 142 and is located in the No. 2 hole 16.

[0039] By combining the rotation of the blower assembly 14 with the rotation of the blades 146, a relatively stable air volume can be formed even under manual rotation. By guiding the air volume to be sucked in and blown out for a short time, active heat dissipation processing after multiple power-on detections is completed, achieving heat dissipation and cooling processing with a certain effect.

[0040] The working principle and use process of the present invention are as follows: when in use, the two ends of the relay protection device to be tested are respectively inserted along the front side of the distribution component 6 in the tester, and the two end plugs of the relay protection device to be tested are respectively inserted into the power supply heads 81 of the two sets of electrical connection components 8, and the middle plate 62 in the distribution component 6 is rotated to drive the mounting ring 61 to rotate in the ring groove 11 and change its position. When the contact plate 83 in the electrical connection component 8 deflects to the end of the corresponding set of conductive rods 5, the elasticity of the spring 84 pushes the contact plate 83 to move and press against the end face of the corresponding conductive rod 5 to complete the electrical connection, and the housing 1 is used to connect the two ends of the conductive rod 5. The start button on the front is used to realize the simulation test under the corresponding control circuit circuit. After completing a set of tests, the distribution component 6 is rotated again. As the installation ring 61 drives the electrically plugged electrical connection component 8 to rotate, the contact plate 83 drives the outer magnetic ring 85 to deflect, and when passing through the magnetic block 9, the repulsive force of the magnetic block 9 pushes the magnetic ring 85 and the contact plate 83 to compress the spring 84, and the damping rotation damping disappears. When the rotation is completed to the target conductive rod 5, the repulsive force of the magnetic block 9 disappears, and the contact plate 83 moves and presses on the corresponding conductive rod 5, completing the connection of another set of detection circuits, and starting the control button on the front of the shell 1 to proceed. Another set of test simulations is performed; when the access end of the relay protection device to be tested is sleeved on the front side of the mounting ring 61, the port is sleeved inside the elastic airbag ring 131 in the extrusion assembly 13. Before rotation adjustment, the threaded rod 134 in the extrusion assembly 13 is independently rotated to drive the piston plate 135 to rotate and extrude along the inside of the connecting sleeve 133, compressing the internal hydraulic oil and further compressing it into the elastic airbag ring 131 through the connecting groove 132, so that the elastic airbag ring 131 further expands and wraps around the outside of the access end of the relay protection device to be tested, completing the wrapping and clamping; when testing, screw out the No. 1 hole 1 5 and the corresponding sealing plugs on the No. 2 hole 16, after completing multiple groups of power-on fault detection, quickly manually rotate the distribution component 6, so that the distribution component 6 drives the connecting shaft 141 in the joint blower component 14 to rotate, and makes the gear 1 144 rotate, and the gear 1 144 drives the gear 2 145 with a small number of teeth to rotate quickly, and with the rotation of the gear 2 145, it drives the installation shaft 142 and the blade 146 to rotate, and the blade 146 rotates in the No. 2 hole 16 and sucks air, sucks in the ambient air and inputs it into the interior of the shell 1, purges the interior, and the internal hot air is output through the No. 1 hole 15 to complete active heat dissipation.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A relay protection tester for power fault simulation test, comprising a housing (1), a control terminal (2), a circuit board (3), a connection terminal (4) and a conductive rod (5), characterized in that: One end of the conductive rod (5) is sleeved inside the shell (1), and the other end is electrically connected to the connection end (4); the conductive rods (5) are distributed around the shell (1) at equal intervals; a distribution component (6) is rotatably mounted on the front of the shell (1); an electrical connection component (8) is fixedly nested inside the distribution component (6); the conductive rod (5) is located on the rotation path of the electrical connection component (8); and an extrusion component (13) is fixedly provided on the front of the distribution component (6). The distribution assembly (6) comprises a mounting ring (61), an intermediate plate (62) and a rotating shaft (63); the mounting ring (61) and the intermediate plate (62) are fixedly connected to the mounting ring (61); the rotating shaft (63) is fixedly connected to the intermediate plate (62) and is rotatably sleeved on the front surface of the housing (1).

2. A relay protection tester for power fault simulation test according to claim 1, characterized in that: The control end (2), the circuit board (3) and the connection end (4) are all fixed inside the housing (1); the control end (2), the circuit board (3) and the connection end (4) are electrically connected in sequence; and the connection end (4) is electrically connected to the conductive rod (5).

3. A relay protection tester for power fault simulation test according to claim 2, characterized in that: The front surface of the housing (1) is provided with an annular groove (11), a magnetic block (9) is nested inside the annular groove (11), the magnetic blocks (9) and the conductive rods (5) are alternately distributed, and the front surface of the housing (1) is provided with a marking groove (10), the marking groove (10) corresponds to the conductive rod (5).

4. A relay protection tester for power fault simulation test according to claim 3, characterized in that: The mounting ring (61) is rotatably sleeved in the ring groove (11); the electrical connection assembly (8) comprises an energizing head (81), a movable rod (82), a contact plate (83), a spring (84), and a magnetic ring (85); the energizing head (81) is fixedly nested in the inner side surface of the mounting ring (61); one end of the movable rod (82) is movably sleeved in the energizing head (81), and the other end is fixedly connected to the contact plate (83); the spring (84) is fixedly connected between the contact plate (83) and the energizing head (81); and the magnetic ring (85) is fixedly sleeved on the outer side surface of the contact plate (83).

5. The relay protection tester for power fault simulation test according to claim 1, characterized in that: The extrusion assembly (13) comprises an elastic airbag ring (131), a connecting groove (132), a connecting sleeve (133), a threaded rod (134) and a piston plate (135); the elastic airbag ring (131) is fixedly sleeved in the front face of the mounting ring (61); the connecting groove (132) is provided in the middle plate (62) and is in communication with the inside of the elastic airbag ring (131); the connecting sleeve (133) is fixedly connected to the front face of the middle plate (62) and is in communication with the connecting groove (132); the threaded rod (134) is threadedly sleeved in the front face of the connecting sleeve (133); and the piston plate (135) is movably sleeved in the connecting sleeve (133) and is fixedly connected to the threaded rod (134).

6. A relay protection tester for power fault simulation test according to claim 1, characterized in that: The front surface of the shell (1) is provided with a mounting sleeve hole (12), the top surface and the front surface of the shell (1) are provided with a No. 1 hole (15) and a No. 2 hole (16) respectively, the outer ends of the No. 1 hole (15) and the No. 2 hole (16) are both threadedly sleeved with sealing plugs, the mounting sleeve hole (12) is rotatably sleeved with the rotating shaft (63), the outer side surface of the rotating shaft (63) is fixedly sleeved with a clamping ring, and the clamping ring is rotatably sleeved in the shell (1).

7. The relay protection tester for power fault simulation test according to claim 1, characterized in that: A protective part (7) is fixedly connected to the front of the shell (1), and the protective part (7) comprises a connecting frame and a damping pad. The connecting frame is fixedly connected to the front of the shell (1), and the damping pad is fixedly connected to the inner side surface of the connecting frame. The conductive rods (5) are symmetrically distributed on both sides of the protective part (7).

8. The relay protection tester for power fault simulation test according to claim 6, characterized in that: A combined air blowing assembly (14) is provided inside the housing (1). The combined air blowing assembly (14) comprises a connecting shaft (141), a mounting shaft (142), a positioning block (143), a gear 1 (144), a gear 2 (145) and a blade (146). The connecting shaft (141) is fixedly connected to the rotating shaft (63). The positioning block (143) is fixedly connected to the No. 2 hole (16). The mounting shaft (142) is rotatably sleeved in the positioning block (143) via a bearing. The gear 1 (144) is fixedly sleeved on the outer surface of the connecting shaft (141). The gear 2 (145) is fixedly sleeved on the outer surface of the mounting shaft (142). The gear 1 (144) and the gear 2 (145) are meshingly connected. The blade (146) is fixedly sleeved on the mounting shaft (142) and is located in the No. 2 hole (16).

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