Relay protection device of high-voltage transformer substation

Abstract

The utility model relates to the technical field of protection devices, and particularly discloses a relay protection device of a high-voltage substation, which is characterized in that a first connecting rod is rotatably connected in a high-voltage distribution box, two second connecting rods are rotatably connected in the first connecting rod, and two rectangular sliding seats are slidably connected in the high-voltage distribution box; the two second connecting rods are rotationally connected to the interiors of the two rectangular sliding seats correspondingly, the outer surfaces of the two rectangular sliding seats are each fixedly connected with a set of limiting clamping sleeves, and the rectangular sliding seats slidably drive the connected second connecting rods to change the angle; one rectangular sliding seat pushes the first connecting rod to rotate, the other rectangular sliding seat is pulled to slide synchronously through the other second connecting rod, meanwhile, the rectangular sliding seats drive the limiting clamping sleeve to move, when the limiting clamping sleeve is close to the guide rail, the guide rail is sleeved with the through groove of the limiting clamping sleeve, and physical protection of a relay body on the guide rail is achieved through the adaptive size.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protection device, especially relates to a relay protection device of high voltage substation. BACKGROUND

[0002] The relay protection device of high voltage substation is mainly used for guaranteeing the safe and stable operation of power system in high voltage substation. In high voltage substation, the process of power transmission and distribution is complex, and there are various potential fault risks, such as short circuit, overload, grounding fault, etc. The relay protection device detects the abnormal situation in time by real-time monitoring the operating parameters of power system, such as current, voltage, phase, etc., and quickly acts, cuts off the fault circuit or sends out an alarm, so as to protect the electrical equipment from damage, prevent the expansion of fault, and ensure the reliability and continuity of power supply. It is widely used in various high voltage substations, whether it is a large hub substation or a terminal substation distributed in different areas, it is an indispensable key equipment to guarantee the normal operation of power system. At present, the relay protection device of high voltage substation usually needs the following technologies in practical application:

[0003] 1. High-precision sensor technology is used to accurately measure various parameters of power system, such as current transformer, voltage transformer, etc., to accurately judge the system operating state.

[0004] 2. Fast and reliable signal processing and analysis technology can quickly process and analyze the signals collected by sensors, and quickly identify the fault type and location.

[0005] 3. Stable communication technology realizes data transmission and interaction between relay protection device and other devices in substation and remote monitoring center, which is convenient for timely mastering and processing fault information.

[0006] 4. High-reliability power supply technology ensures that the relay protection device can obtain stable power supply in various complex power environments, avoiding the failure of protection device due to power supply problems.

[0007] 5. The design of strong and durable shell and good electromagnetic compatibility technology makes the device adapt to the harsh electromagnetic environment and complex natural environment in high voltage substation, and ensures the stable operation of the device.

[0008] At present, in order to realize the stable connection of relay, various equipment and methods are adopted, and the guide rail installation method is adopted in most distribution boxes. The relay is equipped with a clamping groove or a clip matched with the standard guide rail, which can be directly clamped on the guide rail. The guide rail is usually fixed inside the distribution box, control cabinet and other equipment. This method is convenient for installation and quick installation and disassembly of relay, and the guide rail can provide stable support for relay to ensure its position stable when running normally and being subjected to certain vibration.

[0009] However, the above-mentioned mode has a prominent problem that the two-end limiting function is usually lacking in the guide rail installation mode of the relay, and during the operation of the equipment, vibration is inevitably generated, such as mechanical vibration during the operation of industrial production equipment, electromagnetic vibration generated by electrical equipment in a high-voltage substation, etc., and the lack of adjustable two-end limiting function may cause the relay to slide along the guide rail due to vibration, resulting in a change in the position of the relay, which not only may affect the connection line between the relay and other electrical elements, but also may cause the relay to fail to accurately protect or control the corresponding circuit, thereby reducing the reliability of the system. Utility model content

[0010] In view of the deficiencies of the prior art, the utility model provides a relay protection device of a high-voltage substation, which solves the technical problem that the two-end limiting function is usually lacking in the guide rail installation mode of the relay, and during the operation of the equipment, vibration is inevitably generated, such as mechanical vibration during the operation of industrial production equipment, electromagnetic vibration generated by electrical equipment in a high-voltage substation, etc., and the lack of adjustable two-end limiting function may cause the relay to slide along the guide rail due to vibration, resulting in a change in the position of the relay, which not only may affect the connection line between the relay and other electrical elements, but also may cause the relay to fail to accurately protect or control the corresponding circuit, thereby reducing the reliability of the system.

[0011] To achieve the above object, the utility model realizes the following technical scheme:

[0012] A relay protection device of a high-voltage substation, including high-voltage distribution box, first connecting rod is rotatably connected in the high-voltage distribution box, two second connecting rods are rotatably connected in the first connecting rod, two rectangular sliding seats are slidably connected in the high-voltage distribution box, two second connecting rods are rotatably connected in the rectangular sliding seat respectively, a group of limiting sleeves are fixedly connected on the outer surface of two rectangular sliding seats, the guide rail is fixedly connected on the inner surface of the high-voltage distribution box, and two groups of limiting sleeves are located on the both sides of a group of guide rails respectively.

[0013] Preferably, the inner part of the two groups of limiting sleeves is provided with a through groove, and the two groups of through grooves are matched with the guide rail.

[0014] Preferably, the outer surface of a group of guide rails is provided with a relay body, and the inner part of the high-voltage distribution box is rotatably connected with a threaded rod.

[0015] Preferably, the outer surface of the threaded rod is provided with an anti-skid stripe.

[0016] Preferably, the inner part of the high-voltage distribution box is fixedly connected with a spring, and the spring is fixedly connected on the outer surface of the two rectangular sliding seats.

[0017] Preferably: the high-voltage distribution box is internally rotatably connected with a box door, and the high-voltage distribution box is internally fixedly connected with two fans.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] I. The rectangular sliding seat drives the second connecting rod connected thereto to change the angle. Since the second connecting rod is rotatably connected with the rectangular sliding seat and the first connecting rod, respectively, one rectangular sliding seat drives the first connecting rod to rotate, and then another second connecting rod pulls the other rectangular sliding seat to slide synchronously. At the same time, the rectangular sliding seat drives the limiting sleeve to move. When the rectangular sliding seat approaches the guide rail, the through slot of the limiting sleeve is sleeved on the guide rail, and the physical protection of the relay body on the guide rail is realized by using the adaptive size, the position is limited, and displacement and collision are prevented.

[0020] II. When the rectangular sliding seat slides, the spring fixedly connected to the outer surface of the rectangular sliding seat and the interior of the high-voltage distribution box is also pulled to stretch. The spring stores elastic potential energy. When the rectangular sliding seat needs to be reset, the spring releases the elastic potential energy to assist the rectangular sliding seat to slide to the initial position. When the rectangular sliding seat needs to be restored to the initial position, the spring releases the stored elastic potential energy and actively provides a pulling force for the rectangular sliding seat to slide to the initial position, greatly reducing the burden of manual operation of the staff and reducing the operation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above description is only a summary of the technical scheme of the utility model. In order to more clearly understand the technical means of the utility model and can be implemented according to the content of the specification, the following will be described in detail with the preferred embodiments of the utility model and the accompanying drawings.

[0022] Figure 1 It is a perspective view of the utility model;

[0023] Figure 2 It is an explosion view of the fan connection of the utility model;

[0024] Figure 3 It is an explosion view of the guide rail connection of the utility model;

[0025] Figure 4 It is an explosion view of the rectangular sliding seat connection of the utility model.

[0026] Legend: 11, high-voltage distribution box; 12, first connecting rod; 13, second connecting rod; 14, rectangular sliding seat; 15, limiting sleeve; 16, guide rail; 17, through slot; 18, relay body; 19, threaded rod; 21, anti-skid stripe; 22, spring; 23, box door; 24, fan. DETAILED DESCRIPTION

[0027] The embodiment of the application provides a relay protection device of a high-voltage transformer substation, effectively solves the problem that the two-end limiting function is usually not adjustable in the guide rail installation mode of the relay, and inevitably produces vibration in the equipment operation process, such as mechanical vibration in the operation of industrial production equipment, electromagnetic vibration produced by electrical equipment in the high-voltage transformer substation and the like. The relay may slide along the guide rail due to the vibration, the position of the relay is changed, the connection line between the relay and other electrical elements is possibly affected, the relay cannot accurately protect or control the corresponding circuit, the reliability of the system is reduced, the rectangular sliding seat drives the second connecting rod connected therewith to change the angle, the second connecting rod is connected with the rectangular sliding seat and the first connecting rod in rotation, respectively, so that one rectangular sliding seat drives the first connecting rod to rotate, and then another second connecting rod drives another rectangular sliding seat to synchronously slide, meanwhile, the rectangular sliding seat drives the limiting clamping sleeve to move, when being close to the guide rail, the through slot of the limiting clamping sleeve is sleeved on the guide rail, the physical protection of the relay body on the guide rail is realized by using the adaptive size, the position of the relay body is limited, and the displacement and collision are prevented.

[0028] Embodiment

[0029] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical scheme in the embodiment of the application effectively solves the problem that the two-end limiting function is usually not adjustable in the guide rail installation mode of the relay, and vibration is inevitably generated in the equipment operation process, such as mechanical vibration in the operation of industrial production equipment, electromagnetic vibration generated by electrical equipment in a high-voltage transformer substation, etc. Without the adjustable two-end limiting function, the relay may slide along the guide rail due to vibration, resulting in a change in the position of the relay. This not only may affect the connection line between the relay and other electrical elements, but also may cause the relay to fail to accurately protect or control the corresponding circuit, thereby reducing the reliability of the system. The overall idea is as follows: a relay protection device for a high-voltage transformer substation, comprising a high-voltage distribution box 11, a first connecting rod 12 rotatably connected inside the high-voltage distribution box 11, two second connecting rods 13 rotatably connected inside the first connecting rod 12, two rectangular sliding seats 14 slidably connected inside the high-voltage distribution box 11, the two second connecting rods 13 being rotatably connected inside the two rectangular sliding seats 14 respectively, a set of limiting sleeves 15 fixedly connected to the outer surfaces of the two rectangular sliding seats 14 respectively, a guide rail 16 fixedly connected to the inner surface of the high-voltage distribution box 11, the two sets of limiting sleeves 15 being located on the two sides of one set of guide rails 16 respectively, a through slot 17 being formed in the inner part of each set of limiting sleeves 15, and the two sets of through slots 17 being adapted to the guide rails 16. When one rectangular sliding seat 14 slides, it will push the first connecting rod 12 to rotate in the process of sliding. The first connecting rod 12 will pull the other rectangular sliding seat 14 to slide synchronously in the process of rotating. The two rectangular sliding seats 14 slide synchronously and are centered (i.e., slide towards each other or away from each other at the same time). The two limiting sleeves 15 are brought closer to the guide rails 16 in the process of sliding of the two rectangular sliding seats 14. The sizes of the through slots 17 formed in the inner parts of the two guide rails 16 are adapted to the sizes of the guide rails 16. The two sets of limiting sleeves 15 are slidably sleeved on the outer surfaces of the guide rails 16, thereby protecting the relays installed on the surfaces of the guide rails 16.

[0030] A relay body 18 is arranged on the outer surface of each set of guide rails 16. A threaded rod 19 is rotatably connected inside the high-voltage distribution box 11. The two rectangular sliding seats 14 are threadedly connected to the outer surface of the threaded rod 19. Anti-slip stripes 21 are arranged on the outer surface of the threaded rod 19. A spring 22 is fixedly connected inside the high-voltage distribution box 11. The spring 22 is fixedly connected to the outer surfaces of the two rectangular sliding seats 14. The relay body 18 is installed on the surface of the guide rail 16. The multiple relay bodies 18 play a role in controlling, protecting, and monitoring the circuit system. After the installation of the relay body 18 is completed, the threaded rod 19 is screwed. The anti-slip stripes 21 arranged on the surface of the threaded rod 19 are used to increase the contact area of the workers, thereby playing a role in anti-slip. When the anti-slip stripes 21 rotate, they will drive the rectangular sliding seat 14 threadedly connected thereto to slide. When the rectangular sliding seat 14 slides, it will pull the spring 22 to stretch. The stretched spring 22 plays an auxiliary role when the rectangular sliding seat 14 slides back to its original position.

[0031] The high-voltage distribution box 11 is internally rotatably connected with a box door 23, and two fans 24 are fixedly connected inside the high-voltage distribution box 11, the rotatable box door 23 in the high-voltage distribution box 11 is used for shielding protection of various types of relay bodies 18, the high-voltage distribution box 11 forms a closed space by closing the box door 23, and heat exchange is performed by the fans 24 installed in the high-voltage distribution box 11 during shielding protection, and heat dissipation work is performed.

[0032] In view of the problems in the prior art, the utility model provides a kind of relay protection device of high-voltage substation, rectangular slide seat 14 sliding drives the second connecting rod 13 connected changes angle, since second connecting rod 13 is respectively connected with rectangular slide seat 14 and first connecting rod 12 rotation, so that one rectangular slide seat 14 promotes first connecting rod 12 rotation, and then another second connecting rod 13 is pulled to another rectangular slide seat 14 synchronous sliding, simultaneously, rectangular slide seat 14 drives limit sleeve 15 movement, when being close to guide rail 16, the through slot 17 of limit sleeve 15 is sleeved on guide rail 16, and the physical protection of relay body 18 on guide rail 16 is realized using adaptive size, limit its position, prevent displacement and collision.

[0033] High-voltage distribution box 11: as device shell main body, provide installation space and protection for internal components, set up structure connection support other components to ensure integrity and stability, provide relatively closed environment to reduce external interference, cooperate with box door 23 to form closed space to prevent dirt from affecting relay body 18, provide fixed position for guide rail 16 and other components to ensure cooperative work, cooperate with fan 24 to realize internal heat exchange to maintain appropriate temperature to ensure normal work of relay;

[0034] First connecting rod 12: as transmission hub, connect two second connecting rods 13, when one rectangular slide seat 14 slides, it is pushed to rotate around the rotation point in high-voltage distribution box 11 through the second connecting rod 13 connected, drives another second connecting rod 13 to move to realize the synchronous centering sliding of two rectangular slide seats 14 to ensure protection consistency, cooperate with second connecting rod 13 to transmit force and coordinate movement, complete transmission with high-voltage distribution box 11 as rotation support point;

[0035] Second connecting rod 13: connect rectangular slide seat 14 and first connecting rod 12 to transmit force and change movement direction, rectangular slide seat 14 sliding drives it to change angle to convert linear motion into rotation driving force of first connecting rod 12, transmit rotation movement of first connecting rod 12 to another rectangular slide seat 14 to make it synchronous sliding, with first connecting rod 12 to form transmission system to control synchronous movement of rectangular slide seat 14, cooperate with limit sleeve 15 to drive limit sleeve 15 close to guide rail 16 to complete protection action;

[0036] Rectangular sliding seat 14: linearly slides along threaded rod 19 inside high-voltage distribution box 11, position adjustment is realized by threaded connection conversion of threaded rod 19 rotation movement, outer surface fixed limit sleeve 15 drives its movement to protect relay body 18, through rotation connection with second connecting rod 13 to participate in connecting rod transmission to make two rectangular sliding seats 14 synchronous centering sliding, cooperates with threaded rod 19 to convert movement, cooperates with second connecting rod 13 to realize synchronous movement, cooperates with limit sleeve 15 to protect and release protection, cooperates with spring 22 to stretch and reset;

[0037] Limit sleeve 15: fixed on the outer surface of rectangular sliding seat 14 moves with it, internal through slot 17 is adapted to guide rail 16, when rectangular sliding seat 14 approaches guide rail 16, through slot 17 sleeves guide rail 16 to limit it, protects relay body 18 on guide rail 16 from displacement collision, cooperates with rectangular sliding seat 14 to realize protection, cooperates with guide rail 16 to provide limit protection, cooperates with protection structure to ensure the position stability of relay body 18;

[0038] Guide rail 16: fixed on the inner surface of high-voltage distribution box 11 provides installation carrier for relay body 18, cooperates with limit sleeve 15 to protect relay body 18, cooperates with relay body 18 to ensure its installation and work, cooperates with limit sleeve 15 to realize protection, cooperates with high-voltage distribution box 11 to support and position related components;

[0039] Through slot 17: opened in the internal of limit sleeve 15 is adapted to guide rail 16, sleeves guide rail 16 to realize the close connection of limit sleeve 15 and guide rail 16 to protect relay body 18, cooperates with limit sleeve 15 to realize protection, cooperates with protection structure to ensure protection function;

[0040] Relay body 18: installed on the surface of guide rail 16 to control, protect and monitor circuit system, cooperates with guide rail 16 to realize fixed installation, cooperates with device to work under protection and heat dissipation guarantee, cooperates with box door 23 and fan 24 to maintain working temperature in airtight space;

[0041] Threaded rod 19: rotationally connected inside high-voltage distribution box 11, outer surface is threadedly connected with rectangular sliding seat 14, rotation is converted into linear motion of rectangular sliding seat 14 to control protection structure adjustment, cooperates with rectangular sliding seat 14 to adjust position, cooperates with staff to facilitate operation and adjustment, cooperates with high-voltage distribution box 11 to rotate and drive rectangular sliding seat 14 as support;

[0042] Anti-skid stripes 21: on the outer surface of threaded rod 19 to increase the friction force between staff and threaded rod 19, facilitate force screwing, cooperates with threaded rod 19 to assist operation, cooperates with staff to improve operation efficiency and accuracy;

[0043] Spring 22: two ends are connected with the outer surface of the rectangular sliding seat 14 and the inside of the high-voltage distribution box 11 respectively, the rectangular sliding seat 14 is stretched to store elastic potential energy when sliding, and releases to assist its return to the initial position to reduce the burden of manual reset and improve efficiency, cooperates with the rectangular sliding seat 14 to realize reset, and cooperates with the device to enhance operability and stability;

[0044] Box door 23: rotatably connected inside the high-voltage distribution box 11, closed to shield and protect the relay body 18 to form a closed space to prevent dirt, cooperates with the high-voltage distribution box 11 to realize opening and closing, cooperates with the relay body 18 to provide protection, and cooperates with the fan 24 to maintain temperature in the closed space through heat exchange;

[0045] Fan 24: fixed inside the high-voltage distribution box 11, working in the closed space when the box door 23 is closed, through air circulation heat exchange to discharge the working heat of the relay body 18, to ensure its working at appropriate temperature to ensure the normal operation of the circuit system, cooperates with the high-voltage distribution box 11 to exchange heat in the closed space, and cooperates with the relay body 18 to dissipate heat to ensure its stable performance.

[0046] Working principle:

[0047] First, the relay body 18 is installed to the guide rail 16 to connect multiple relay bodies 18 and circuits together through series connection, parallel connection and other ways, the box door 23 rotatably connected inside the high-voltage distribution box 11 can shield and protect various relay bodies 18 when closed, so that a closed space is formed inside the high-voltage distribution box 11 to further prevent external sundries, dust and other influences on the relay body 18, in this closed space, two fans 24 installed inside the high-voltage distribution box 11 work continuously, through air circulation heat exchange to discharge the heat generated by the relay body 18 when working, to realize heat dissipation function, ensure the stable working of the relay body 18 in appropriate temperature environment, and further ensure the normal operation of the control and protection functions of the entire circuit system

[0048] Second, first, after the relay body 18 is installed to the surface of the guide rail 16, the worker starts the adjustment of the protection device by screwing the threaded rod 19, the anti-skid stripes 21 on the outer surface of the threaded rod 19 increase the frictional force between the worker's hand and the threaded rod 19, facilitating the force screwing, with the rotation of the threaded rod 19, since the two rectangular sliding seats 14 are threadedly connected to the outer surface of the threaded rod 19, according to the screw transmission principle, the rotation of the threaded rod 19 is converted into the linear motion of the rectangular sliding seat 14 along the axis of the threaded rod 19, at this time, the rectangular sliding seat 14 will move towards or away from each other (i.e. synchronous centering sliding) along the threaded rod 19, in the sliding process of the rectangular sliding seat 14, the second connecting rod 13 connected thereto will change the angle with the movement of the rectangular sliding seat 14, because the second connecting rod 13 is rotatably connected to the inside of the rectangular sliding seat 14 at one end and rotatably connected to the first connecting rod 12 at the other end, so the sliding of one rectangular sliding seat 14 will push the first connecting rod 12 to rotate around its rotation point in the high-voltage distribution box 11, and the rotation of the first connecting rod 12 will pull the synchronous sliding of the other rectangular sliding seat 14 through the other second connecting rod 13 connected thereto, at the same time, the limiting sleeve 15 fixedly connected to the outer surface of the rectangular sliding seat 14 will move together with the rectangular sliding seat 14, when the rectangular sliding seat 14 approaches the guide rail 16, the through slot 17 opened in the inside of the limiting sleeve 15 will gradually approach and finally be sleeved on the outer surface of the guide rail 16, since the size of the through slot 17 is adapted to the guide rail 16, so that the physical protection of the relay body 18 installed on the surface of the guide rail 16 is realized by the sliding sleeve of the two sets of limiting sleeves 15 on the outer surface of the guide rail 16, thereby limiting the position of the relay body 18 and preventing it from being displaced or collided in accidental circumstances, when the rectangular sliding seat 14 slides, it will also pull the stretching of the spring 22 fixedly connected to the outer surface of the rectangular sliding seat 14 and the inside of the high-voltage distribution box 11, the spring 22 stores elastic potential energy, when the rectangular sliding seat 14 needs to be reset, the spring 22 releases the elastic potential energy to assist the sliding of the rectangular sliding seat 14 to the initial position.

[0049] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A relay protection device of a high-voltage substation, comprising a high-voltage distribution box (11), a first connecting rod (12) being rotatably connected inside the high-voltage distribution box (11), characterized in that, The first connecting rod (12) is rotatably connected with two second connecting rods (13) inside, the high-voltage distribution box (11) is slidably connected with two rectangular sliding seats (14) inside, two second connecting rods (13) are rotatably connected inside two rectangular sliding seats (14) respectively, and the outer surfaces of the two rectangular sliding seats (14) are all fixedly connected with a group of limiting sleeves (15); Wherein, the inner surface of the high-voltage distribution box (11) is fixedly connected with guide rails (16), and the two groups of limiting sleeves (15) are located on the two sides of a group of guide rails (16) respectively.

2. A protective relay for a high voltage substation as claimed in claim 1, characterized in that The inner surfaces of the two groups of limiting sleeves (15) are all provided with through grooves (17); Wherein, the two groups of through grooves (17) are all matched with guide rails (16).

3. A protective relay for a high voltage substation as claimed in claim 2, characterised in that, The outer surfaces of a group of guide rails (16) are all provided with relay bodies (18); Wherein, the high-voltage distribution box (11) is rotatably connected with a threaded rod (19) inside.

4. A protective relay for a high voltage substation as claimed in claim 3, characterised in that, Two rectangular sliding seats (14) are threadedly connected on the outer surface of the threaded rod (19); Wherein, the outer surface of the threaded rod (19) is provided with anti-skid stripes (21).

5. A protective relay for a high voltage substation as claimed in claim 4, characterised in that, The high-voltage distribution box (11) is fixedly connected with springs (22) inside; Wherein, the springs (22) are fixedly connected on the outer surfaces of the two rectangular sliding seats (14).

6. A protective relay for a high voltage substation as claimed in claim 5, characterised in that, The high-voltage distribution box (11) is rotatably connected with a box door (23) inside; Wherein, the high-voltage distribution box (11) is fixedly connected with two fans (24) inside.

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