CN215180619U - Electrified secondary cable recognition device of transformer substation - Google Patents
Electrified secondary cable recognition device of transformer substation Download PDFInfo
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- CN215180619U CN215180619U CN202120966631.4U CN202120966631U CN215180619U CN 215180619 U CN215180619 U CN 215180619U CN 202120966631 U CN202120966631 U CN 202120966631U CN 215180619 U CN215180619 U CN 215180619U
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Abstract
The utility model provides an electrified secondary cable recognition device of transformer substation, include: the device comprises a power supply signal generating device, an identification response device, a sending side cable cutting sleeve and a receiving side cable cutting sleeve, wherein the sending side cable cutting sleeve and the receiving side cable cutting sleeve are both sleeved on a shielding layer of a secondary cable; the power supply signal generating device includes: the shell is internally provided with a singlechip for outputting a current signal; the recognition response device includes: casing, signal amplifier, speaker and LED pilot lamp. Interference on the secondary cable is avoided, and particularly, the charged secondary cable can be identified; the pulse signal can be induced at any position of the secondary cable, so that the identification of the whole process of the secondary cable, namely any position, is realized; the identification effect of the secondary cable is more visual and obvious, and the identification speed of the secondary cable is improved by means of audio-visual combination of equipment personnel.
Description
Technical Field
The utility model belongs to the technical field of transformer substation's secondary cable signal check out test set, especially, relate to an electrified secondary cable recognition device of transformer substation.
Background
At present, a plurality of secondary cables are used as signal transmission media among equipment control systems in a transformer substation, so that the phenomenon that the secondary cables with a large number and similar appearances are stacked and placed together often occurs on the site. When operating the secondary cable, a worker often finds out a required secondary cable at one end of the cable, but makes a recognition error at the other end or the middle position due to the complicated secondary cable, thereby causing a serious safety accident. Especially, when the protection technology of a transformer substation is transformed, the original secondary cables need to be identified one by one, and the trend and the function of the original cables can be cleared, so that the secondary cable identification accuracy is particularly important.
In order to solve the technical problem that secondary cables are stacked and disordered to cause difficulty in identification, a skilled person in the field identifies the cables in a mode of comparing cable signs and reference drawings on a working site, but sometimes, the cable signs are blurred due to long-term ages, the signs are lost, and the marking is wrong, so that the identification rate is low, and the accuracy is further influenced. Moreover, cable signs are typically placed at both ends of the cable and cannot be identified at any location on the secondary cable, such as the middle. In order to solve the technical problems brought by comparing a cable label and referring to a drawing identification mode, the technical personnel in the field use an audio signal identification method, namely, an audio signal is accessed to a power cable to be identified, the electromagnetic is converted into the audio signal which is easy to hear, and the personnel listen to the signal through an induction coil and an earphone, so that the identification of a secondary cable is completed. However, the injected audio signal frequency can interfere with the operation of the charged secondary cable, so the method mainly aims at the secondary cable under the power failure condition, and the charged secondary cable cannot meet the identification requirement.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an electrified secondary cable recognition device of transformer substation. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
The utility model adopts the following technical scheme:
in some optional embodiments, there is provided a substation live secondary cable identification apparatus, including: the cable cutting sleeve at the sending side and the cable cutting sleeve at the receiving side are both sleeved on a shielding layer of the secondary cable; the cable clamp sleeve at the transmitting side is connected with a signal output port of the power supply signal generating device through a first connecting wire, and the cable clamp sleeve at the receiving side is connected with a signal input port of the identification response device through a second connecting wire; the power signal generating device includes: the single chip microcomputer is used for outputting a current signal; the recognition response device comprises: the LED signal amplifier comprises a shell, a signal amplifier, a loudspeaker and an LED indicator light, wherein the signal amplifier is arranged in the shell, and the loudspeaker and the LED indicator light are connected in parallel at the output end of the signal amplifier.
Furthermore, the current signal that power signal generating device's singlechip output is 10A, and the frequency is 2.5Hz, the singlechip passes through first connecting wire with the signal transmission to send the side cable card and sheathe in.
Furthermore, a shell of the power supply signal generating device is provided with a power supply indicator light, a power supply rotary switch and a charging socket; and a battery is also arranged in the shell of the power supply signal generating device.
Further, the signal amplifier includes: a resistor R1, a resistor R2, a resistor R3, an operational amplifier A1 and an operational amplifier A2; one end of the resistor R1 is used as the input end of the signal amplifier, and the other end is connected with the inverting input end of the operational amplifier A1; one end of the resistor R2 is connected with the inverting input end of the operational amplifier A1, the other end of the resistor R2 is connected with the output end of the operational amplifier A1, and the output end of the operational amplifier A1 is used as the first output end of the signal amplifier; one end of the resistor R3 is connected with the non-inverting input end of the operational amplifier A1 and the input end of the operational amplifier A2, and the other end is connected with the output end of the operational amplifier A1; the output terminal of the operational amplifier a2 serves as a second output terminal of the signal amplifier.
Further, the input end of the signal amplifier is connected with the second connecting line as the signal input port of the identification response device.
The utility model discloses the beneficial effect who brings:
1. the utility model can not interfere the secondary cable, especially can realize the identification of the electrified secondary cable, and ensure the stability and the safety of the secondary cable operation;
2. the utility model can sense the pulse signal at any position of the secondary cable, so as to realize the identification of the whole process of the secondary cable, namely any position;
3. the identification effect of the secondary cable is more visual and obvious through the loudspeaker and the LED indicating lamp, and the identification speed of the secondary cable is improved through a mode of combining audio and video of equipment personnel;
4. simple structure and easy operation, the efficiency of discernment is higher, and the accuracy is higher.
Drawings
Fig. 1 is a schematic structural diagram of the electrified secondary cable identification device of the transformer substation of the present invention;
fig. 2 is a circuit diagram of the signal amplifier of the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others.
As shown in fig. 1, in some illustrative embodiments, there is provided a substation live secondary cable identification device for rapid visual identification of a substation live secondary cable overall process, comprising: the device comprises a power signal generating device 1, an identification response device 2, a sending side cable sleeve 3, a receiving side cable sleeve 4, a first connecting wire 5 and a second connecting wire 6.
Both the cable cutting ferrule 3 at the transmitting side and the cable cutting ferrule 4 at the receiving side are sleeved on a shielding layer of a secondary cable, the power signal generating device 1 outputs a current signal and transmits the current signal to the cable cutting ferrule 3 at the transmitting side, and the identification response device 2 senses the current signal through the cable cutting ferrule 4 at the receiving side. Because both ends of the secondary cable shielding layer are grounded, an electric loop is formed between the shielding layer and the ground, so that current signals can be transmitted between the whole shielding layer of the secondary cable.
In actual operation, the cable ferrule 3 at the transmitting side of the power signal generating device 1 is firstly fixed on a shielding layer of a secondary cable to be identified, power is supplied through the power supply of the power signal generating device 1, so that the power signal generating device 1 outputs a current signal with the frequency of 2.5Hz, the signal is transmitted to the cable ferrule 3 at the transmitting side through the first connecting wire 5, and a current signal with very low frequency is induced on the secondary cable. The equipment personnel fixes the receiving side cable ferrule 4 in the identification response device 2 on the shielding layer of any one secondary cable at the position where the secondary cable needs to be identified, such as the middle position and the terminal position, when the secondary cable fixed by the receiving side cable ferrule 4 is inconsistent with the secondary cable sending the signal, no current signal is sent on the receiving side cable ferrule 4, so that the identification response device 2 has no reaction, which means that the secondary cables are not the same secondary cable. The equipment personnel fix receiving side cable cutting ferrule 4 on another secondary cable again, until the secondary cable that receiving side cable cutting ferrule 4 was fixed is unanimous with the secondary cable that the signal sent, discernment response unit 2 will receive the current signal that transmits.
The transmission side cable ferrule 3 is connected to the signal output port 101 of the power signal generation device 1 through the first connection line 5. The power supply signal generating apparatus 1 includes: the device comprises a shell 102, a power indicator light 103, a power rotary switch 104, a charging socket 105, a single chip microcomputer and a battery.
A battery and a single chip microcomputer for outputting a current signal are arranged in the housing 102. The power signal generating device is provided with a power indicator light 103, a power rotary switch 104 and a charging socket 105 on a housing 102. The charging socket 105 is used for being connected with a power supply, and the power supply part is input by a 220VAC power supply, so that the rechargeable battery is charged, and direct current voltage is rectified to supply power for outputting low-frequency current signals. When the environment has no 220V alternating voltage, the battery can be used as a power supply for outputting a low-frequency current signal, and the battery capacity is generally 10 hours. The current signal is realized by the encoding of a single chip microcomputer. The power rotary switch 104 is connected with the input end of the single chip microcomputer, the power indicator lamp 103 is connected with the output end of the single chip microcomputer, when the single chip microcomputer detects that the power rotary switch 104 is turned on, the power supply is controlled to be powered on to supply power for the local equipment, and when the power supply or the battery power supply is detected, the power indicator lamp 103 is controlled to be turned on to prompt.
The current signal of power signal generating device 1's singlechip output is 10A, and the frequency is 2.5Hz, and the singlechip passes through first connecting wire 5 with signal transmission to sending side cable cutting ferrule 3 on, can respond to a frequency and be 2.5Hz pulse signal on the secondary cable this moment, and this pulse signal frequency is less than the 50Hz frequency that influences electrified secondary cable far away, can not form the interference to electrified secondary cable, is applicable to electrified secondary cable discernment. Because the two ends of the shielding layers of all secondary cables of the transformer substation are grounded, the shielding layers and the grounding grid can form an electric loop, and the pulse signals existing on the shielding layers can be transmitted to the other end of the secondary cable from one end of the secondary cable, so that the identification response device 2 can sense the pulse signals at any position of the secondary cable, and the whole process identification of the electrified secondary cable is completed.
The receiving side cable ferrule 4 is connected to the signal input port 205 of the identification response device 2 through the second connection line 6. The recognition response device 2 includes: the LED display device comprises a shell 201, a signal amplifier 202, a loudspeaker 203 and an LED indicator lamp 204, wherein the signal amplifier 202 is arranged in the shell 201, and the loudspeaker 203 and the LED indicator lamp 204 are connected in parallel at the output end of the signal amplifier.
As shown in fig. 2, the signal amplifier 202 includes: a resistor R1, a resistor R2, a resistor R3, an operational amplifier A1, and an operational amplifier A2. One end of the resistor R1 is used as the input terminal a of the signal amplifier, and the other end is connected to the inverting input terminal of the operational amplifier a 1. One end of the resistor R2 is connected to the inverting input terminal of the operational amplifier a1, the other end is connected to the output terminal of the operational amplifier a1, and the output terminal of the operational amplifier a1 serves as the first output terminal B of the signal amplifier. One end of the resistor R3 is connected to the non-inverting input terminal of the operational amplifier a1 and the input terminal of the operational amplifier a2, the other end is connected to the output terminal of the operational amplifier a1, and the output terminal of the operational amplifier a2 serves as the second output terminal C of the signal amplifier.
The input a of the signal amplifier is connected to the second connection line 6 as the signal input port 205 of the identification response means 2. When a low-frequency current signal is transmitted to the second connecting wire 6 through the receiving side cable ferrule 4, the signal frequency is low, and the speaker and the LED indicator cannot be driven to work, so that when the signal reaches the input end a of the signal amplifier, the signal frequency is amplified by the signal amplifier 202, and then the signal amplifier is connected to the speaker 203 from the first output end B and the second output end C of the signal amplifier, so that a 'dripping' sound is emitted, and when the signal passes through the LED indicator 204, the lamp is lightened. Meanwhile, sound and light are output, so that workers can quickly sense the generated effect, the identification work of the secondary cable is completed, and the identification efficiency of the whole secondary cable is improved.
The first connection line 5 and the second connection line 6 may be cables.
The power supply signal generating device 1 outputs a low-frequency current signal to the shielding layer of the secondary cable, the other end of the power supply signal generating device detects the current signal through the identification response device 2, and outputs light and sound.
The above embodiment is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above embodiment, and any other changes, modifications, replacements, combinations, simplifications, equivalent replacement modes, which are not departed from the spirit and principle of the present invention, should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a live secondary cable recognition device of transformer substation which characterized in that includes: the cable cutting sleeve at the sending side and the cable cutting sleeve at the receiving side are both sleeved on a shielding layer of the secondary cable; the cable clamp sleeve at the transmitting side is connected with a signal output port of the power supply signal generating device through a first connecting wire, and the cable clamp sleeve at the receiving side is connected with a signal input port of the identification response device through a second connecting wire; the power signal generating device includes: the single chip microcomputer is used for outputting a current signal; the recognition response device comprises: the LED signal amplifier comprises a shell, a signal amplifier, a loudspeaker and an LED indicator light, wherein the signal amplifier is arranged in the shell, and the loudspeaker and the LED indicator light are connected in parallel at the output end of the signal amplifier.
2. The substation electrified secondary cable recognition device of claim 1, wherein the current signal output by the single chip of the power signal generation device is 10A, the frequency is 2.5Hz, and the single chip transmits the signal to the cable clamp sleeve on the transmitting side through the first connection wire.
3. The substation electrified secondary cable identification device according to claim 2, wherein a power indicator lamp, a power rotary switch and a charging socket are arranged on a housing of the power signal generation device; and a battery is also arranged in the shell of the power supply signal generating device.
4. The substation live secondary cable identification device of claim 3, wherein the signal amplifier comprises: a resistor R1, a resistor R2, a resistor R3, an operational amplifier A1 and an operational amplifier A2; one end of the resistor R1 is used as the input end of the signal amplifier, and the other end is connected with the inverting input end of the operational amplifier A1; one end of the resistor R2 is connected with the inverting input end of the operational amplifier A1, the other end of the resistor R2 is connected with the output end of the operational amplifier A1, and the output end of the operational amplifier A1 is used as the first output end of the signal amplifier; one end of the resistor R3 is connected with the non-inverting input end of the operational amplifier A1 and the input end of the operational amplifier A2, and the other end is connected with the output end of the operational amplifier A1; the output terminal of the operational amplifier a2 serves as a second output terminal of the signal amplifier.
5. The substation live secondary cable identification device according to claim 4, wherein the input end of the signal amplifier is connected to the second connection line as the signal input port of the identification response device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120966631.4U CN215180619U (en) | 2021-05-08 | 2021-05-08 | Electrified secondary cable recognition device of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120966631.4U CN215180619U (en) | 2021-05-08 | 2021-05-08 | Electrified secondary cable recognition device of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215180619U true CN215180619U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120966631.4U Active CN215180619U (en) | 2021-05-08 | 2021-05-08 | Electrified secondary cable recognition device of transformer substation |
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|---|---|
| CN (1) | CN215180619U (en) |
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2021
- 2021-05-08 CN CN202120966631.4U patent/CN215180619U/en active Active
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