Multifunctional fault monitoring device for high-voltage power distribution system

Abstract

The utility model discloses a multifunctional fault monitoring device for a high-voltage power distribution system, which solves the problem that different fault monitoring devices need to be replaced for monitoring when different faults are monitored, and comprises a machine body, detectors are arranged on the machine body at equal intervals, and different detectors are used for detecting different faults. A power connection assembly is installed on the machine body, the detector comprises a voltage transformer, a current transformer, an insulation resistance sensor and a partial discharge sensor which are sequentially installed on the machine body, the power connection assembly comprises two sliding grooves formed in the top end of the machine body, and the two sliding grooves are symmetrically formed in the two sides of the detector; contact points are installed on the sides, close to each other, of the two sliding grooves at equal intervals. According to the utility model, during working, the contacts arranged on the chutes are in one-to-one correspondence with the detectors, and the detectors on the machine body are used for monitoring different faults in the circuit, so that the different faults of the circuit can be conveniently monitored, and the use is convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of fault monitoring devices, specifically a multi-functional fault monitoring device for high-voltage power distribution systems. Background Technology

[0002] High-voltage power distribution systems are a crucial component of the power system, primarily responsible for distributing, controlling, and transmitting the high-voltage electrical energy (generally 35kV and above) output from substations. This energy is then delivered at appropriate voltage levels (such as 10kV, 6kV, etc.) to various user terminals or areas with concentrated electrical equipment, such as factories, commercial areas, and residential communities. They typically consist of high-voltage switchgear, transformers, cables, busbars, and other equipment. Fault monitoring of the high-voltage power distribution system is also necessary to improve its operational stability. While fault monitoring is usually performed using fault monitoring equipment, the following shortcomings still exist:

[0003] When different faults need to be monitored, the type of fault monitoring equipment needs to be selected according to the type of fault, and then the fault monitoring equipment is replaced, resulting in poor fault monitoring effect. Utility Model Content

[0004] In view of the above situation and to overcome the shortcomings of the prior art, this utility model provides a multi-functional fault monitoring device for high-voltage power distribution systems, which effectively solves the problem of needing to replace different fault monitoring equipment when monitoring different faults.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-functional fault monitoring device for a high-voltage power distribution system, comprising a body, on which detectors are installed at equal intervals, different detectors being used to detect different faults, and a power connection component being installed on the body;

[0006] The detector includes a voltage transformer, a current transformer, an insulation resistance sensor, and a partial discharge sensor, which are installed sequentially on the body.

[0007] The power connection assembly includes two slides located at the top of the body. The two slides are symmetrically arranged on both sides of the detector. On the side of the two slides that are close to each other, there are contacts installed at equal intervals. The number of contacts is the same as the number of detectors. The two corresponding contacts on both sides are electrically connected to the two poles of the corresponding detectors.

[0008] Preferably, conductive slide bars are installed on the sides of the two slides that are far apart from each other, and connecting components are symmetrically arranged on both sides of the machine body;

[0009] The connecting assembly includes wires symmetrically installed on both sides of the body, with connecting pens electrically connected to the ends of the wires, and the two wires electrically connected to two conductive sliders respectively.

[0010] Preferably, the top end of the body is provided with two guide rods, the guide rods are symmetrically arranged on the sides away from each other of the two sliding grooves, the top end of the guide rod is provided with a positioning slot equidistantly, the positioning slot corresponds to the contact point one by one, and the guide rod is provided with a sliding assembly.

[0011] Preferably, the sliding assembly comprises a sliding block, a rod slot is formed in the sliding block, the sliding block is slidably arranged outside the guide rod through the rod slot, the bottom end of the sliding block is provided with a moving block, the moving block is located inside the sliding groove, the moving block is fixedly provided with a conductive rod, and the two ends of the conductive rod can be in contact with the contact point and the conductive slide strip respectively.

[0012] Preferably, the top end of the sliding block is fixedly provided with a fixed cylinder, the fixed cylinder is in communication with the rod slot, a clamping slot is movably arranged in the fixed cylinder, the clamping slot is clamped into one of the positioning slots, the top end of the clamping slot is fixedly provided with a spring, the top end of the spring is fixedly connected with the inner top wall of the fixed cylinder, the top end of the clamping slot is fixedly provided with a pull rod, and the pull rod penetrates to the top end of the fixed cylinder.

[0013] Preferably, the top end of the body is hingedly provided with a protective cover, a buckle is arranged between the body and the protective cover, and sealing gaskets are arranged on the top wall of the body and the bottom wall of the protective cover.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] In work, the contact points on the sliding groove correspond to the detectors one by one, the detectors on the body are used for monitoring different faults in the circuit, the conductive rod is in contact with the contact points at different positions by moving the moving block, and the detectors are connected to the circuit through the two connecting pens, so that the circuit is monitored for different faults, and use is facilitated.

[0016] In work, the contact points on one side of the sliding groove are electrically connected with the detectors, the conductive slide strips on the other side of the sliding groove are electrically connected with the connecting pens, the positioning slots are equidistantly formed in the guide rod, the positioning slots correspond to the detectors one by one, the position of the conductive rod is fixed by clamping the clamping slot and the positioning slot, so that the circuit is connected with the corresponding detectors, and different faults are detected. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model.

[0018] In the drawings:

[0019] Figure 1 It is a structural schematic view of a multifunctional fault monitoring device for a high-voltage distribution system.

[0020] Figure 2 It is the machine body structure schematic view of the utility model;

[0021] Figure 3 It is the contact assembly structure schematic view of the utility model;

[0022] Figure 4 It is the sliding assembly structure schematic view of the utility model;

[0023] Figure 5 It is the sliding block structure schematic view of the utility model.

[0024] In the drawing: 1, machine body;2, protective cover;3, buckle;4, connecting assembly;401, wire;402, connecting pen;5, detector;501, voltage transformer;502, current transformer;503, insulation resistance sensor;504, partial discharge sensor;6, contact assembly;601, sliding groove;602, contact;603, conductive slide;604, guide rod;605, positioning groove;7, sliding assembly;701, moving block;702, conductive rod;703, sliding block;704, rod groove;705, fixed cylinder;706, clamping groove;707, spring;708, pull rod. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] By Figures 1-5 The utility model relates to a kind of multifunctional fault monitoring devices for high-voltage distribution system, including machine body 1, equidistant detector 5 is installed on machine body 1, different detector 5 is used to detect different faults, contact assembly 6 is installed on machine body 1;

[0027] The detector 5 includes a voltage transformer 501, a current transformer 502, an insulation resistance sensor 503, and a partial discharge sensor 504, which are sequentially installed on the body 1. The power connection assembly 6 includes two sliding grooves 601 formed at the top of the body 1. The two sliding grooves 601 are symmetrically arranged on both sides of the detector 5. On the side of the two sliding grooves 601 that are close to each other, contacts 602 are installed at equal intervals. The number of contacts 602 is the same as the number of detectors 5. The two corresponding contacts 602 on each side are electrically connected to the two poles of the corresponding detector 5. On the side of the two sliding grooves 601 that are far apart from each other, conductive sliders 603 are installed. The body 1 The two sides of the body 1 are symmetrically arranged with connecting components 4. The connecting components 4 include wires 401 symmetrically installed on both sides of the body 1. The ends of the wires 401 are electrically connected to connecting pens 402. The two wires 401 are electrically connected to two conductive sliders 603 respectively. The contacts 602 on the sliders 601 correspond one-to-one with the detectors 5. Each detector 5 on the body 1 is used to monitor different faults in the circuit. By moving the moving block 701, the conductive rod 702 is made to contact the contacts 602 at different positions, and the detectors 5 are connected to the circuit through the two connecting pens 402, so as to facilitate the monitoring of different faults in the circuit and make it convenient to use.

[0028] Two guide rods 604 are installed at the top of the body 1. The guide rods 604 are symmetrically arranged on the opposite side of the two sliding grooves 601. The top of the guide rods 604 is provided with positioning grooves 605 at equal intervals, and the positioning grooves 605 correspond one-to-one with the contacts 602. A sliding assembly 7 is installed on the guide rods 604. The sliding assembly 7 includes a sliding block 703. The sliding block 703 is provided with a rod groove 704. The sliding block 703 is slidably installed on the outside of the guide rods 604 through the rod groove 704. A moving block 701 is installed at the bottom of the sliding block 703. The moving block 701 is located inside the sliding groove 601. The moving block 701 is fixed on the bottom. A conductive rod 702 is fixedly installed, and its two ends can contact the contact point 602 and the conductive slider 603 respectively. A fixed cylinder 705 is fixedly installed at the top of the slider 703. The fixed cylinder 705 is connected to the rod groove 704. A slot 706 is movably installed inside the fixed cylinder 705. The slot 706 is inserted into one of the positioning grooves 605. A spring 707 is fixedly installed at the top of the slot 706. The top of the spring 707 is fixedly connected to the inner top wall of the fixed cylinder 705. A pull rod 708 is fixedly installed at the top of the slot 706. The pull rod 708 extends through to the top of the fixed cylinder 705.

[0029] A protective cover 2 is hinged to the top of the body 1, and a buckle 3 is installed between the body 1 and the protective cover 2. Sealing gaskets are installed on the top wall of the body 1 and the bottom wall of the protective cover 2.

[0030] Working principle: when working, the top end of the machine body 1 is provided with a voltage transformer 501, a current transformer 502, an insulation resistance sensor 503 and a partial discharge sensor 504, wherein the voltage transformer 501 is used to convert the voltage of the high-voltage line into a low-voltage signal suitable for device measurement, generally adopting an electromagnetic or capacitive voltage transformer, which has high precision and wide frequency response characteristics, the current transformer 502 converts a large current into a small current signal, and the commonly used is a through-type current transformer, which can accurately measure the line current, the insulation resistance sensor 503 adopts a special insulation resistance measurement circuit, which measures the leakage current by applying a direct current voltage to the measured equipment to calculate the insulation resistance value, and the partial discharge sensor 504 can adopt a high-frequency current transformer or an ultrasonic sensor, which is used to detect the high-frequency current signal or ultrasonic signal generated by the partial discharge, so as to realize the monitoring of the insulation partial discharge;

[0031] When one of them needs to be monitored, pull the two pull rods 708 upwards, so that the clamping groove 706 moves upwards and is disengaged from the clamping of the positioning groove 605, and then move the sliding block 703, since the contacts 602 on the two sliding grooves 601 correspond to the detectors 5 one by one, move the conductive rod 702 to the position where the required corresponding detector 5 upper contact 602 is contacted, so that the two electrodes of the detector 5, the contact 602, the conductive rod 702 and the conductive sliding strip 603 and the two connecting pens 402 are connected in series, and then install the two connecting pens 402 to the two ends of the circuit to be detected, so as to monitor the circuit through the detector 5.

Claims

1. A multi-functional fault monitoring device for high-voltage power distribution systems, comprising a body (1), characterized in that: The body (1) is equipped with detectors (5) at equal intervals. Different detectors (5) are used to detect different faults. The body (1) is equipped with a power connection component (6). The detector (5) includes a voltage transformer (501), a current transformer (502), an insulation resistance sensor (503), and a partial discharge sensor (504) installed sequentially on the body (1); The power connection assembly (6) includes two slides (601) opened at the top of the body (1). The two slides (601) are symmetrically arranged on both sides of the detector (5). On the side of the two slides (601) that are close to each other, there are contacts (602) installed at equal intervals. The number of contacts (602) is the same as the number of detectors (5). The two corresponding contacts (602) on both sides are electrically connected to the two poles of the corresponding detector (5).

2. The multi-functional fault monitoring device for high-voltage power distribution systems according to claim 1, characterized in that: Conductive slide bars (603) are installed on the side of the two slides (601) that are far apart from each other, and connecting components (4) are symmetrically arranged on both sides of the body (1); The connecting component (4) includes wires (401) symmetrically installed on both sides of the body (1). The ends of the wires (401) are electrically connected to connecting pens (402), and the two wires (401) are electrically connected to two conductive sliders (603) respectively.

3. The multi-functional fault monitoring device for high-voltage power distribution systems according to claim 1, characterized in that: Two guide rods (604) are installed at the top of the body (1). The guide rods (604) are symmetrically arranged on the side of the two slides (601) that are far apart from each other. The top of the guide rods (604) is provided with positioning grooves (605) at equal intervals. The positioning grooves (605) correspond one-to-one with the contact points (602). A sliding component (7) is installed on the guide rods (604).

4. A multi-functional fault monitoring device for high-voltage power distribution systems according to claim 3, characterized in that: The sliding assembly (7) includes a sliding block (703), on which a rod groove (704) is provided. The sliding block (703) is slidably mounted on the outside of the guide rod (604) through the rod groove (704). A moving block (701) is installed at the bottom end of the sliding block (703). The moving block (701) is located inside the sliding groove (601). A conductive rod (702) is fixedly installed on the moving block (701). The two ends of the conductive rod (702) can contact the contact point (602) and the conductive slider (603) respectively.

5. A multi-functional fault monitoring device for high-voltage power distribution systems according to claim 4, characterized in that: A fixed cylinder (705) is fixedly installed at the top of the sliding block (703). The fixed cylinder (705) is connected to the rod groove (704). A slot (706) is movably installed inside the fixed cylinder (705). The slot (706) is inserted into one of the positioning grooves (605). A spring (707) is fixedly installed at the top of the slot (706). The top of the spring (707) is fixedly connected to the inner top wall of the fixed cylinder (705). A pull rod (708) is fixedly installed at the top of the slot (706). The pull rod (708) extends through to the top of the fixed cylinder (705).

6. A multi-functional fault monitoring device for high-voltage power distribution systems according to claim 1, characterized in that: A protective cover (2) is hinged to the top of the body (1), and a buckle (3) is installed between the body (1) and the protective cover (2). Sealing gaskets are installed on the top wall of the body (1) and the bottom wall of the protective cover (2).

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