CN206179712U - High -voltage switch's passive aid monitoring system of position sigual - Google Patents

Abstract

The application discloses a position signal passive auxiliary monitoring system of a high-voltage switch, which includes at least one high-voltage switch, at least one permanent magnetic element, at least one magnetic induction passive contact signal output module; and passive contact signal output terminals. When the high-voltage switch is in the closing position, monitor the output signal of the permanent magnetic element and the magnetic induction passive contact signal output module through the passive contact signal terminal to judge whether the high-voltage switch is in the closing state; and when the high-voltage switch is in the opening position When the passive contact signal terminal cannot detect the output signal of the permanent magnetic element and the magnetic induction passive contact signal output module, it can be judged whether the high-voltage switch is in the opening state. The application has high reliability, and can accurately determine whether the high-voltage switch is in the closed or disconnected state.

Description

Passive Auxiliary Monitoring System for Position Signal of High Voltage Switch

technical field

The application relates to the technical field of electric power automation, in particular to the field of on-line monitoring of high-voltage switches.

Background technique

High-voltage switch is the most commonly used short-circuit protection device for branch lines of 10kV distribution lines and distribution transformers. The high-voltage switch mentioned in this application refers to high-voltage circuit breakers and high-voltage load switches. With the characteristics of strong outdoor environment, it is widely used in 10kV distribution lines and the primary side of distribution transformers for protection and equipment switching and switching operations.

However, many high-voltage switches in the actual operation of the power grid are old-fashioned switches, which cannot be effectively remotely managed. The main reason is that they do not have any position (opening and closing) auxiliary contacts and cannot be automatically monitored.

In this field, the commonly used method at this stage is to manually record the statistics of the opening and closing positions of the high-voltage switch, which lacks automatic and reliable monitoring means, and when the high-voltage switch fails and trips, the manual recording is not timely, resulting in a monitoring blind spot of the distribution network. Fully realizing the automation of power distribution switches has become an urgent need for power operation units.

Utility model content

In order to solve the above problems in the prior art, this application provides a passive auxiliary monitoring system for position signals of high-voltage switches, which provides a basic technology for further remote monitoring of old-fashioned high-voltage switches in power lines.

1. The technical solution adopted in this application is: a passive auxiliary monitoring system for position signals of high-voltage switches, characterized in that the system includes a high-voltage switch, a permanent magnetic element, and a magnetic induction passive contact signal output module The high-voltage switch includes a switch position opening and closing pointer, the magnetic induction passive contact signal output module is fixedly connected to the shell of the high-voltage switch, the magnetic induction passive contact signal output module is fixedly connected to the high-voltage switch, The permanent magnetic element is fixedly connected with the switch position opening and closing pointer; the magnetic induction passive contact signal output module also includes a magnetic induction switch, a passive contact signal output terminal, and a wiring base plate, a crimping plate, a nut, Screws or bolts; there is a fixing hole at one end of the wiring base plate; there is a wire groove along the center line of the wiring base plate on the upper plane of the other end of the wiring base plate, and the wire groove is a rectangular groove; on both sides of the wire groove There are holes evenly distributed respectively, and screws or bolts can be passed through the holes; there are through holes at both ends of the crimping plate, and the screws pass through the through holes of the crimping plate, and the crimping plate is fixed on the upper plane of the wiring base plate, and the crimping plate On the upper part of the wire groove; nuts are respectively fixed on the screws or bolts; the wire pressing plate can compress the wire in the wire groove.

Preferably, the passive contact signal output module in the passive auxiliary monitoring system of the present application further includes a magnetic induction switch, a passive contact signal output terminal, and a wiring base, a crimping plate, nuts, screws or bolts.

Preferably, the wiring board adopts an integrated structure of equipment wire clips, and the structure of the passive contact signal output module is molded at one time, and heat treatment is performed on it after molding.

Preferably, a sealing cover is provided on the passive contact signal output terminal for sealing.

Preferably, the passive contact signal output is a single-group output or a double-group output, and the output is normally open, normally closed, or any combination of normally open and normally closed.

Preferably, the passive contact signal output module encapsulates its core components in the automatic monitoring device of the high-voltage switch, which is used for judging and monitoring the opening and closing positions of the high-voltage switch.

Compared with the prior art, the beneficial effects of the present application are:

First of all, it has high reliability and can accurately determine whether the high-voltage switch is closed or disconnected;

Secondly, by setting monitoring terminals, the basic technology of remote monitoring of high-voltage switches can be solved more effectively, and the cost is low, and the technology of this application is conducive to the secondary development of intelligent control of ordinary high-voltage switches without position auxiliary contacts .

Description of drawings

Fig. 1 is a schematic diagram of switching on of the position signal passive auxiliary monitoring system of the high voltage switch;

Figure 2 is a schematic diagram of the opening of the passive auxiliary monitoring system for the position signal of the high voltage switch;

Fig. 3 is a schematic diagram of a position signal passive auxiliary monitoring terminal of a high voltage switch.

detailed description

As shown in Figure 1, 1 is the shell (operating and indicating surface) of the high-voltage switch, 2 is the input and output terminal of the high-voltage switch, 3 is the manual operation handle of the high-voltage switch, and 4 is the pointer of the high-voltage switch position (opening and closing); 5 is a permanent magnetic element; 6 is a magnetic induction passive contact signal output module; 7 is a passive contact signal output terminal.

A position signal passive auxiliary monitoring system of a high-voltage switch includes at least one high-voltage switch, at least one permanent magnetic element, and at least one magnetic induction passive contact signal output module; the high-voltage switch includes a switch position (open, close) Pointer, the magnetic induction passive contact signal output module is fixedly connected to the high-voltage switch shell (operation and indication surface), and the permanent magnetic element is fixedly connected to the high-voltage switch position (open, close) pointer.

The passive contact signal output module also includes a magnetic induction switch, a passive contact signal output terminal, a wiring base, a crimping plate, nuts and screws or bolts. There is a fixing hole at one end of the wiring base plate; there is a wire groove along the center line of the wiring base plate on the upper plane of the other end of the wiring base plate, and the wire groove can be selected as a rectangular groove; holes are evenly distributed on both sides of the wire groove. Screws or bolts can be passed through the holes; there are through holes at both ends of the crimping plate, the screws pass through the through holes of the crimping plate, the crimping plate is fixed on the upper plane of the wiring base plate, and the crimping plate is on the upper part of the wire groove; Nuts are respectively fixed on the screws or bolts; the wire pressing plate can compress the wires in the wire grooves.

The technical effect achieved by the structure of the above-mentioned passive contact signal output module is: the wiring board adopts an integrated structure of equipment wire clips, and the structure of the passive contact signal output module can be molded at one time, and heat treatment is performed on it after molding, which can avoid The metal is electrochemically corroded, and it can be directly connected to the wire during the installation process; the contact resistance is reduced and the operation reliability is improved. And a sealing cover is set on the passive contact signal output terminal for sealing.

The high-voltage switch shown in Figure 1 is under the condition of line overcurrent, short circuit and manual opening and closing operation, the internal contacts of the switch are separated or contacted, and the pointer of the switch position (opening, closing) is rotated to point to the corresponding position to open the internal contacts of the switch. The on-off state is reflected on the side of the switch, providing maintenance personnel with an on-off indication of the high-voltage switch.

When the high-voltage switch is in the closed position (as shown in Figure 1), monitor the output signal of the permanent magnetic element and the magnetic induction passive contact signal output module through the passive contact signal output terminal 7 to judge whether the high-voltage switch is in the closed state and when the high-voltage switch is in the opening position (as shown in Figure 2), the connection between the permanent magnetic element and the magnetic induction passive contact signal output module cannot be detected through the passive contact signal output terminal 7 (as shown in Figure 3). Output signal to identify whether the high voltage switch is in the opening state.

And Fig. 1 has only provided a kind of preferred installation mode of the present application, in fact, the present application can have multiple installation modes, specifically as follows:

Installation and use method 1: Fix a permanent magnetic element on the high-voltage switch position (open, close) pointer, and fix the magnetic induction passive contact signal output module on the high-voltage switch shell (operation and indication surface). When installed and fixed on the high-voltage switch shell When the magnetic induction passive contact signal output module on the (operating and indicating surface) is within the effective range of the magnetic field of the permanent magnetic element installed and fixed on the pointer of the high voltage switch (open, close), a reed action occurs, Thus, an on-off signal of electrical connection is output to represent the auxiliary contact of the opening and closing position of the high-voltage switch.

Installation and use method two: Install and fix a permanent magnetic element on the high-voltage switch shell (operation and indication surface), and install and fix the magnetic induction passive contact signal output module on the high-voltage switch position (open, close) pointer. When installed and fixed on When the magnetic induction passive contact signal output module on the position (open, close) pointer of the high-voltage switch is within the effective range of the magnetic field of the permanent magnetic element installed and fixed on the high-voltage switch shell (operating and indicating surface), a spring occurs. The chip acts, thereby outputting an on-off signal of electrical connection to indicate the auxiliary contact of the high-voltage switch opening and closing position.

Installation and use method three: Install the magnetic induction passive contact signal output module in method one in the automatic detection module, and install and fix it on the high-voltage switch casing (operation and indication surface) together with the automatic detection module.

Installation and use method four: Install the magnetic induction passive contact signal output module in method two in the automatic detection module, and install and fix it on the high-voltage switch position (open, close) pointer together with the automatic detection module.

The specific implementation described above is only the preferred implementation of the present utility model, but the protection scope of the present utility model is not limited thereto. It is easy to think of other changes or replacements, and these changes or replacements should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (6)

1. A position signal passive auxiliary monitoring system of a high-voltage switch, characterized in that: the system includes a high-voltage switch, a permanent magnetic element, a magnetic induction passive contact signal output module; the high-voltage switch includes a switch position divider The pointer is closed, the magnetic induction passive contact signal output module is fixedly connected to the shell of the high voltage switch, the magnetic induction passive contact signal output module is fixedly connected to the high voltage switch, and the permanent magnetic element is connected to the high voltage switch The switch position opening and closing pointer is fixedly connected; the magnetic induction passive contact signal output module also includes a magnetic induction switch, a passive contact signal output terminal, and a wiring base plate, a crimping plate, nuts, screws or bolts; There is a fixing hole at one end of the wiring base plate; there is a wire groove along the center line of the wiring base plate on the upper plane of the other end of the wiring base plate, and the wire groove is a rectangular groove; holes are evenly distributed on both sides of the wire groove, and in the hole Screws or bolts can be used; there are through holes at both ends of the crimping plate, the screws pass through the through holes of the crimping plate, the crimping plate is fixed on the upper plane of the wiring base plate, and the crimping plate is on the upper part of the wire groove; Nuts are respectively fixed on the bolts; the wire pressing plate can compress the wires in the wire grooves. 2. The position signal passive auxiliary monitoring system of the high-voltage switch according to claim 1 is characterized in that the wiring board adopts an integrated structure of equipment wire clips, and the structure of the passive contact signal output module is formed at one time. Carry out heat treatment. 3. The position signal passive auxiliary monitoring system of the high voltage switch according to claim 1, characterized in that a sealing cover is provided on the passive contact signal output terminal for sealing. 4. The position signal passive auxiliary monitoring system of the high voltage switch according to claim 1, wherein the passive contact signal output is a single group output or a double group output. 5. The position signal passive auxiliary monitoring system of the high voltage switch according to claim 4, wherein the output is normally open, normally closed or any combination of normally open and normally closed. 6. The position signal passive auxiliary monitoring system of the high-voltage switch according to claim 1, characterized in that the passive contact signal output module encapsulates its core components in the automatic monitoring device of the high-voltage switch, and is used to analyze and control the high-voltage switch. Judgment and monitoring of joint position.