AIS Disconnector Installation Calibration System

Abstract

The present invention provides an installation and calibration system for an AIS disconnector, comprising a data concentrator, a verticality and horizontality detection device, a knife switch three-phase synchronization detection device, and a switch opening distance and closing straightness detection device; the verticality and horizontality detection device communicates with the data concentrator; the verticality and horizontality detection device comprises a pair of hinged hinges, a magnetic attraction, an inertial unit, a first microprocessor, and a first communication unit; at least one inertial unit is installed at the hinged side of a pair of hinged hinges, and the inertial unit is connected to the first microprocessor; at least one magnetic attraction is provided on each hinge; the first microprocessor is connected to the first communication unit; and the first communication unit communicates with the data concentrator. The present invention can accurately reflect the verticality of the three-phase base during the installation of the AIS disconnector, realize three-phase synchronization fine-tuning, and detect the opening distance when the knife switch is opened and the straightness when the switch is closed.

Description

Technical Field

[0001] The invention belongs to the field of installation and calibration of electric power equipment, in particular to an installation and calibration system of an AIS isolating switch. Background Art

[0002] AIS disconnector is the most commonly used electrical equipment in substations. It can open and close circuits under no-load current conditions, isolate the power system circuits, and form a clear disconnection point. The opening and closing operations of the electric disconnector are mainly completed by the electric operating mechanism and mechanical transmission mechanism of the disconnector. As the main power equipment, when the installation process and mechanical commissioning of the disconnector do not meet the specifications, accidents such as the opening and closing of the disconnector, overheating of the contactor, and the breakage of the porcelain bottle will occur when the disconnector is used, which poses a great safety hazard. Although the structure of the AIS disconnector is relatively simple, the maintenance personnel need to inspect and maintain the switch structure, transmission, and rotation. If the installation and commissioning of the AIS disconnector is carried out only based on the experience of commissioning and maintenance, it is easy to cause the commissioning process to be cumbersome, the entire maintenance time is long, the number is large, and there are many maintenance defects. Some disconnectors may also damage the disconnector components during the maintenance and commissioning process, which is easy to cause safety hazards.

[0003] Therefore, the installation and debugging process of the isolating switch should be tested more accurately. The installation and debugging of the isolating switch is an important guarantee for the normal use of the isolating switch in the later stage, so prevention is the priority. Summary of the invention

[0004] The purpose of the present invention is to provide an installation calibration system for an AIS disconnector, which can accurately reflect the verticality of the three-phase base during the installation of the AIS disconnector, realize synchronous fine-tuning of the three phases, and detect the opening distance when the knife is opened and the straightness when the knife is closed; the technical solution adopted in the embodiment of the present invention is:

[0005] An installation and calibration system for an AIS disconnector, comprising: a data concentration device, a verticality and horizontality detection device;

[0006] The verticality and horizontality detection device communicates with the data concentration device;

[0007] The verticality and horizontality detection device includes a pair of hinged hinges, a magnetic attraction, an inertial unit, a first microprocessor, and a first communication unit;

[0008] At least one inertial unit is installed at the hinged side of a pair of hinged hinges, and the inertial unit is connected to the first microprocessor; at least one magnetic attraction is provided on each hinge;

[0009] The first microprocessor is connected to a first communication unit; the first communication unit communicates with a data concentration device.

[0010] Furthermore, the magnet is embedded in the hinge, and two opposite surfaces of the two hinges are flat.

[0011] Furthermore, the angle α between the two opposite surfaces of the pair of hinges can be freely adjusted within a range of less than 180 degrees.

[0012] Furthermore, two inertia units are installed at the hinged sides of a pair of hinged hinges, and are spaced apart up and down.

[0013] Furthermore, the installation and calibration system of the AIS disconnector further comprises: a three-phase synchronization detection device for the knife switch;

[0014] The knife switch three-phase synchronization detection device comprises a signal generator, a second microprocessor, and a second communication unit; the second microprocessor is respectively connected to the signal generator and the second communication unit; the second communication unit communicates with the data concentration device;

[0015] The signal generator can generate three synchronous pulse signals. The three synchronous pulse signals output by the signal generator are respectively connected to one end of the three-phase switch, and the other end of the three-phase switch is connected to three corresponding I / O ports of the second microprocessor.

[0016] Furthermore, the installation and calibration system of the AIS disconnector further comprises: a switch-off distance and a switch-on straightness detection device; the switch-off distance and a switch-on straightness detection device communicates with the data concentration device;

[0017] The device for detecting the opening distance and closing straightness of the switch includes an ultrasonic distance measuring device, a laser emitting device, and a laser receiving device;

[0018] The ultrasonic distance measuring device is installed on the contact conductive rod or the contact guide rod; it is used to detect the distance between the contact conductive rod and the contact guide rod when the knife of the AIS disconnector is completely opened, that is, the opening distance when the knife is opened;

[0019] The laser emitting device and the laser receiving device are respectively installed on the contact conductive rod and the contact conductive rod in a symmetrical manner; the laser emitting device emits laser at the center; and the laser receiving device has an array-type laser receiver.

[0020] The prior art mainly detects the operating status of the AIS disconnector through online monitoring or live detection equipment, and does not involve the preliminary installation and debugging of the AIS disconnector; the present invention realizes accurate reflection of the verticality of the three-phase base during the installation of the AIS disconnector, realizes synchronous fine-tuning of the three-phase, and detects the opening distance when the knife is opened and the straightness when the knife is closed; the present invention can ensure the accuracy of the installation of the AIS disconnector, save the installation time of the three-phase base, realize the rapid installation of the three-phase base, and realize the digitization of the installation process, and is an integral part of the construction of smart substations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 4 is a system electrical schematic diagram of an embodiment of the present invention.

[0022] Figure 2 Schematic diagram of the structure of a verticality and horizontality detection device according to an embodiment of the present invention.

[0023] Figure 3 Schematic diagram of an electrical device for detecting verticality and horizontality according to an embodiment of the present invention.

[0024] Figure 4 It is an electrical schematic diagram of a three-phase synchronization detection device for a knife switch according to an embodiment of the present invention.

[0025] Figure 5A It is a schematic diagram of the knife switch in the fully opened state according to an embodiment of the present invention.

[0026] Figure 5B It is a schematic diagram of the knife switch open state according to an embodiment of the present invention.

[0027] Figure 5C Schematic diagram of the knife switch closing state according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The embodiment of the present invention provides an installation calibration system for an AIS isolating switch, such as Figure 1 As shown, it includes a data concentrator, a verticality and horizontality detection device, a knife switch three-phase synchronization detection device, and a switch opening distance and closing straightness detection device; the verticality and horizontality detection device, the knife switch three-phase synchronization detection device, the switch opening distance and closing straightness detection device are all in communication with the data concentrator;

[0030] like Figure 2 , Figure 3As shown, the verticality and horizontality detection device includes a pair of hinged hinges 101, a magnetic attraction 102, an inertial unit 103, a first microprocessor 104, and a first communication unit 105;

[0031] At least one inertial unit 103 is installed at the hinged side 101a of a pair of hinged hinges 101, and the inertial unit 103 is connected to the first microprocessor 104; at least one magnetic attraction 102 is provided on each hinge 101;

[0032] The magnet 102 is preferably embedded in the hinge 101 to keep the two opposite surfaces of the two hinges 101 flat;

[0033] The angle α between the two opposing surfaces of the pair of hinges 101 can preferably be freely adjusted within a range of less than 180 degrees;

[0034] The first microprocessor 104 is connected to the first communication unit 105; the first communication unit 105 communicates with the data concentration device;

[0035] In this embodiment, two inertial units 103 are installed at the hinged side 101a of a pair of hinged hinges 101, and are spaced apart from each other, so that the verticality of the hinged side 101a can be measured more accurately.

[0036] In some embodiments, the inertial unit 103 may be a three-axis accelerometer or a gyroscope, etc.; the first communication unit 105 may be a 3G / 4G wireless communication module; the data concentration device may be a smart terminal, or a computer, etc.;

[0037] like Figure 2 As shown, after the AIS disconnector is installed, a pair of hinged hinges 101 are attached to the three-phase base A through magnetic attraction 102; the three-phase base A is usually a cylindrical base that can be attracted by a magnet (such as iron), and its top is horizontally connected to a horizontal support seat; the two intersection lines of the two opposite surfaces of the two hinges 101 and the three-phase base A are kept parallel to the center line of the three-phase base A, so the hinged side edges 101a of the two hinges are also parallel to the center line of the three-phase base A; measuring the verticality of the hinged side edges 101a of the two hinges reflects the verticality of the three-phase base A, and similarly detecting the horizontality of the horizontal support seat at the top of the three-phase base;

[0038] The inertial unit 103 sends the measured data to the first microprocessor 104, and the first microprocessor 104 obtains the verticality data of the hinged sides 101a of the two hinges (i.e. the verticality data of the three-phase base) and sends it to the data concentration device;

[0039] like Figure 4As shown, the knife switch three-phase synchronization detection device includes a signal generator 201, a second microprocessor 202, and a second communication unit 203; the second microprocessor 202 is connected to the signal generator 201 and the second communication unit 203 respectively;

[0040] The signal generator 201 can generate three synchronous pulse signals. The three synchronous pulse signals output by the signal generator 201 are respectively connected to one end of the three-phase switch, and the other end of the three-phase switch is connected to three corresponding I / O ports of the second microprocessor 202.

[0041] The three-phase synchronization of the AIS disconnector is a key factor that directly reflects the installation quality of the switch blade, and is also a prerequisite for the normal opening and closing of power production equipment, ensuring the safe operation of power production equipment. The three-phase synchronization detection of the traditional AIS disconnector is mainly based on human eye recognition and judgment. The process is to perform the closing operation through the operating mechanism to make one of the three-phase switch blades start to contact, and then the human eye recognizes the distance between the other two phases and the switch blade contact, and then adjusts the three-phase switch blades to close the contact at the same time by adjusting the length of the connecting rod. This process is time-consuming, and the error of human eye recognition is large, which is not conducive to the three-phase synchronization adjustment of the switch blade;

[0042] In the present application, the detection of the three-phase synchronization of the AIS disconnector is carried out by means of a low-voltage pulse signal. When the moving and static contacts of the knife are in contact, the knife is turned on, and the second microprocessor 202 receives the pulse signal and identifies the time difference of the closing of the three-phase knife, providing data guidance for the synchronization adjustment of the three-phase knife; the time difference between phase A and phase B is recorded as t1, and the time difference between phase A and phase C is recorded as t2. The three-phase disconnector is adjusted by the values ​​of t1 and t2 to achieve high-precision three-phase synchronization adjustment;

[0043] The second communication unit 203 communicates with the data concentration device and may use a 3G / 4G wireless communication module;

[0044] like Figure 5A , Figure 5B , Figure 5C As shown, a phase switch of the AIS disconnector includes a matched contact 301 and a contact finger 302, wherein the contact 301 is connected to the end of a contact conductive rod 301a, and the contact finger 302 is connected to the end of a contact conductive rod 302a;

[0045] The device for detecting the opening distance and closing straightness of the switch includes an ultrasonic distance measuring device 303, a laser emitting device 304, and a laser receiving device 305;

[0046] The ultrasonic distance measuring device 303 is installed on the contact conductive rod 301a or the contact conductive rod 302a; when the knife of the AIS disconnector is completely opened, Figure 5AAs shown, the ultrasonic distance measuring device 303 detects the distance between the contact conductive rod 301a and the contact conductive rod 302a, that is, the opening distance when the knife is opened;

[0047] The laser emitting device 304 and the laser receiving device 305 are respectively installed on the contact conductive rod 302a and the contact conductive rod 301a in alignment; the laser emitting device 304 emits laser at the center; the laser receiving device 305 has an array-type laser receiver;

[0048] exist Figure 5B The knife switch is in the open state shown, and the switch is switched to Figure 5C When the knife switch is in the closed state shown, if the laser receiver at the center of the laser receiving device 305 receives the laser, it means that the straightness of the knife switch when it is closed meets the requirements and the knife switch is in a fully closed state; if the laser receiver off-center of the laser receiving device 305 receives the laser, it means that the straightness of the knife switch when it is closed is not good or the knife switch is not in a fully closed state.

[0049] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An installation and calibration system for an AIS disconnector, characterized in that: include: Data concentration device, verticality and horizontality detection device; The verticality and horizontality detection device communicates with the data concentration device; The verticality and horizontality detection device comprises a pair of hinged hinges (101), a magnetic attraction (102), an inertial unit (103), a first microprocessor (104), and a first communication unit (105); At least one inertial unit (103) is installed at the hinged side (101a) of a pair of hinged hinges (101), and the inertial unit (103) is connected to a first microprocessor (104); at least one magnetic attraction (102) is provided on each hinge (101); The first microprocessor (104) is connected to a first communication unit (105); the first communication unit (105) communicates with a data concentration device; The magnetic attraction (102) is embedded in the hinge (101), and the two surfaces opposite to each other of the two hinges (101) are flat; The angle α between the two opposite surfaces of the pair of hinges (101) can be freely adjusted within a range of less than 180 degrees.

2. The installation and calibration system of the AIS disconnector according to claim 1, characterized in that: Two inertia units (103) are installed at the hinged sides (101a) of a pair of hinged hinges (101) and are spaced apart from each other.

3. The installation and calibration system of the AIS disconnector according to claim 1 or 2, characterized in that: Also includes: Knife switch three-phase synchronization detection device; The knife switch three-phase synchronization detection device comprises a signal generator (201), a second microprocessor (202), and a second communication unit (203); the second microprocessor (202) is respectively connected to the signal generator (201) and the second communication unit (203); the second communication unit (203) communicates with the data concentration device; The signal generator (201) is capable of generating three synchronous pulse signals. The three synchronous pulse signals output by the signal generator (201) are respectively connected to one end of a three-phase switch, and the other end of the three-phase switch is connected to three corresponding I / O ports of the second microprocessor (202).

4. The installation and calibration system of the AIS disconnector according to claim 1 or 2, characterized in that: Also includes: Device for detecting the opening distance and closing straightness of the switch; The opening distance and closing straightness detection device communicates with the data concentration device; The device for detecting the opening distance and closing straightness of the switch comprises an ultrasonic distance measuring device (303), a laser emitting device (304), and a laser receiving device (305); The ultrasonic distance measuring device (303) is installed on the contact conductive rod (301a) or the contact guide rod (302a); and is used to detect the distance between the contact conductive rod (301a) and the contact guide rod (302a), i.e., the opening distance when the knife of the AIS disconnector is completely opened; The laser emitting device (304) and the laser receiving device (305) are respectively installed on the contact conductive rod (302a) and the contact conductive rod (301a) in alignment; the laser emitting device (304) emits laser at the center; and the laser receiving device (305) has an array-type laser receiver.

Images