CN106093687A - Intelligent anti-line with ground closes a floodgate and detects device - Google Patents

Abstract

The intelligent anti-banding grounding wire closing detection device includes a detection part and an insulating rod. The joints are connected, the detection part is provided with a ground terminal, and the lower end of the main insulating rod is provided with an interface, which is used for connecting the insulating rod. The beneficial effects of the present invention are: combined structure, simple and convenient connection, time-saving and labor-saving, can greatly improve work efficiency, correspondingly the length of each unit is shortened, and it is convenient to use, carry, transport and store.

Description

Intelligent anti-belt grounding wire closing detection device

technical field

The invention relates to an intelligent switch-on detection device for an anti-belt grounding wire, which is mainly used in the operation, maintenance and high-voltage test sites of electric power systems.

Background technique

After the maintenance work of the power system is completed, the operation (or maintenance) personnel will use the insulating rod to remove the ground wires, and after manually confirming that all the ground wires have been removed, close the knife switch and switch to transmit power. If the scope of power grid outage is large and there are many ground wires, dispatchers are needed, and operators will continue to check, and it is inevitable that there will be omissions. According to the data, there are many cases of power grid enterprises closing the switch and transmitting power with grounding wires. This kind of accident has brought great impact and damage to the operating power equipment, but it has always been a problem that power companies cannot completely solve. If after the work is over, an instrument can be used to check whether there is any grounding wire left on the line, which can reduce or avoid the probability of such accidents.

Insulation rods are defined as: insulation tools used to operate live equipment for a short time, such as turning on or off high-voltage isolating switches, dropping fuses, etc.

The electronic shaker is defined as: in order to avoid accidents, it is used to measure the insulation resistance of various electrical equipment.

Basic insulating tools and appliances: refer to tools and appliances that can directly operate live equipment or contact or may come into contact with live objects. The difference between this kind of tools and live working tools is that they are short-term contact with electrified bodies or non-contact electrified bodies during work. Both insulating rods and electronic remote meters belong to the category of basic insulating tools.

Traditionally used insulating rods have the characteristics of good mechanical and insulating properties, but they have a single function and cannot check whether there is a ground wire left on the line. Now it is necessary to invent a method that not only guarantees its good performance, but also can check the line resistance, and fundamentally eliminate misoperation phenomena such as power transmission with ground wires.

Contents of the invention

In order to fundamentally eliminate misoperation phenomena such as power transmission with ground wires, the present invention provides a truly intelligent anti-ground wire closing detection device. In addition to good basic functions such as performance and effective length, it can also detect line resistance, whether there is a missing ground wire, etc.

The present invention is achieved through the following technical solutions:

The intelligent anti-belt grounding wire closing detection device includes a detection part and an insulating rod. The joints are connected, the detection part is provided with a ground terminal, and the lower end of the main insulating rod is provided with an interface, which is used for connecting the insulating rod.

Wherein, the detection part includes a power supply, buttons, a display unit, an alarm unit, a current amplification unit and a microprocessor, the buttons and the display unit are arranged on the casing of the detection part, and the microprocessor is respectively connected to the display unit, button, power supply, alarm unit and current amplification unit are connected.

Wherein, the current amplifying unit includes a non-contact current sensor, a DC amplifier, and an I/V converter. The non-contact current sensor sends the detected tiny leakage current to the microprocessor after being processed by the DC amplifier, and the I/V conversion The converter is connected with the microprocessor for the conversion of current and voltage.

Wherein, the display unit is an LED display screen.

Wherein, the power supply is a battery inside the detection part.

Wherein, the alarm unit is a buzzer.

Wherein, the joints are detachable and can be divided into various shapes according to electrical inspection, operation and test.

Wherein, the interface is a threaded interface.

Compared with prior art, the beneficial effect of the present invention is:

(1) Combined structure, the connection method is simple and convenient, saving time and effort, which can greatly improve work efficiency, and the length of each unit is correspondingly shortened, which is easy to use, carry, transport and store.

(2) It can detect the grounding of the line, and prevent such vicious operation accidents as power transmission with ground wires and grounding blades.

(3) Due to the wet sky or too much dust, the surface leakage current of the effective length insulation rod is too limited. With the present invention, when the operator holds the insulating rod of the intelligent leakage current detection device, he can monitor whether the leakage current value of the rod body of the insulating bracket exceeds the limit through the LED display screen at any time, so as to prevent electric shock and protect the personal safety of users.

(4) The operating joints are made of high-quality galvanized steel except for special epoxy materials; the test joints are made of hot-dip galvanized high-quality steel (or copper-clad steel).

(5) The effective length insulation rod (1m/section) is made of materials with high strength and good insulation performance to ensure that the original insulation performance and mechanical strength of the insulation rod remain unchanged.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the intelligent anti-banding grounding wire closing device.

Figure 2 is a structural block diagram of the detection part of the intelligent anti-banding grounding wire closing device.

Among them, 1-connector; 2-high resistance; 3-detection part; 4-interface; 5-ground terminal; 6-insulating rod; 7-main insulating rod.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the invention.

Example 1

The intelligent anti-belt grounding wire closing detection device includes a detection part 3 and an insulating rod 6. The detection part 3 is fixed on the main insulating rod 7. The main insulating rod 7 is provided with a high resistance 2, and the detection part 3 and the high resistance The connector 1 of 2 is connected, the detection part 3 is provided with a ground terminal 5, and the lower end of the main insulating rod 7 is provided with an interface 4, which is used to connect the insulating rod 6; the interface 4 is a threaded interface; the connector 1 is detachable, according to the electric test , operation and test are divided into various shapes.

Wherein, detection part 3 comprises power supply, button, display unit, alarm unit, current amplifying unit and microprocessor, and button and display unit are arranged on the shell of detection part 3, and microprocessor is connected with display unit, button, power supply, alarm respectively. The unit and the current amplification unit are connected. The current amplification unit includes a non-contact current sensor, a DC amplifier, and an I/V converter. The non-contact current sensor sends the detected tiny leakage current to the microprocessor after being processed by the DC amplifier, and the I/V converter and the microprocessor Connected, used for current and voltage conversion, the keys include current key, voltage key, confirmation key, and return key, the current key is used to measure the current value, and the voltage key is used to measure the voltage value. The display unit is an LED display; the power supply is a battery inside the detection part; the alarm unit is a buzzer.

When in use, connect the main insulating rod of the intelligent anti-banding grounding wire closing detection device with the insulating rod in a threaded manner (multi-section insulating rods can be connected according to different voltage levels to ensure a safe and effective insulation length), and the The closing detection device with grounding wire is grounded with a flexible wire. The user can hold the handshake at the end of the insulating rod and touch the detected line to detect whether there is a grounding wire left in the detected line at any time. If there is a grounding wire on the detected line, then The LED display shows the high resistance value, and the buzzer sends out a warning sound to remind the operator to pay attention at any time. If there is no ground wire on the detected line, the LED display shows that the resistance is infinite.

Matters needing attention when using the intelligent anti-banding grounding wire closing detection device:

1. It is forbidden to measure during lightning or near high-voltage equipment. It can only be measured when the equipment is not charged or induced.

2. During the testing process, no one can work on the equipment under test.

3. The lead wires of the device should be multi-strand flexible wires, and the two lead wires should not be twisted together, so as not to cause inaccurate measurement.

4. After the measurement is completed, do not touch the measuring part of the measured object with your hands to prevent electric shock.

5. Since this device adopts a voltage doubler circuit, it must be turned off when not in use.

Claims (8)

1. The intelligent anti-belt grounding wire closing detection device includes a detection part and an insulating rod. The resistance joint is connected, the detection part is provided with a ground terminal, and the lower end of the main insulation rod is provided with an interface, which is used to connect the insulation rod. 2. The intelligent anti-band grounding wire closing detection device according to claim 1, wherein the detection part includes a power supply, a button, a display unit, an alarm unit, a current amplification unit and a microprocessor, and the The key and the display unit are arranged on the shell of the detection part, and the microprocessor is respectively connected with the display unit, the key, the power supply, the alarm unit and the current amplification unit. 3. The intelligent anti-band ground wire closing detection device according to claim 2, wherein said current amplifying unit comprises a non-contact current sensor, a DC amplifier, an I/V converter, a non-contact current sensor The detected tiny leakage current is processed by the DC amplifier and sent to the microprocessor, and the I/V converter is connected with the microprocessor for the conversion of current and voltage. 4. The intelligent anti-banding ground wire closing detection device according to claim 2, characterized in that said display unit is an LED display. 5. The intelligent anti-band ground wire closing detection device according to claim 2, characterized in that said power supply is a battery inside the detection part. 6. The intelligent anti-banding ground wire closing detection device according to claim 2, characterized in that the alarm unit is a buzzer. 7. The intelligent anti-belt grounding wire closing detection device according to claim 1, characterized in that the joint is detachable and can be divided into various shapes according to electrical inspection, operation and test. 8. The intelligent anti-banding grounding wire closing detection device according to claim 1, characterized in that the interface is a threaded interface.