CN209517128U - Line unit - Google Patents

Abstract

The present application provides a line device, wherein the device includes: Capacitive voltage transformers are respectively arranged on both sides of the isolating switch in the overhead line, and the capacitive voltage transformers are connected to the photoelectric integrated carrier machine. Using the above steps, A line capable of carrier transmission is established to avoid interruption of carrier transmission when the isolating switch is disconnected, and the lossless transmission of the carrier signal can be guaranteed when the isolating switch is closed or opened, which solves the possible interruption of carrier device communication in related technologies question.

Description

line device

technical field

The present application relates to but not limited to the field of electric power, and specifically relates to a line device.

Background technique

In related technologies, capacitive couplers and inductive couplers are mainly used to couple carrier signals to 10-35 kV power lines. At present, capacitive voltage is used on overhead lines, while inductive couplers are used in ground Used on buried lines.

In the related art, a protection switch (SF6) is installed on the 10kV power line. This protection switch has a great attenuation for the carrier signal, causing the carrier signal to fail to pass through SF6. It may lead to the inability to transmit the medium-voltage broadband carrier signal, causing the communication interruption of the carrier device.

There is currently no effective solution to the problem that the communication of the carrier device may be interrupted in the related art.

Contents of the invention

The embodiment of the present application provides a line device, so as to at least solve the problem in the related art that communication of a carrier device may be interrupted.

According to another embodiment of the present application, a line device is also provided, including: capacitive voltage transformers, respectively arranged on both sides of the isolating switch in the overhead line; to the capacitive voltage transformers on both sides of the isolating switch.

Through this application, capacitive voltage transformers are respectively arranged on both sides of the isolating switch in the overhead line, and the capacitive voltage transformers are connected to the photoelectric integrated carrier machine. Using the above steps, a line that can carry out carrier wave transmission is established to avoid The carrier transmission is interrupted when the isolating switch is disconnected, and the lossless transmission of the carrier signal can be guaranteed when the isolating switch is closed or opened, which solves the problem that the communication of the carrier device in the related art may be interrupted.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

Fig. 1 is a schematic diagram of double coupling of capacitive voltage transformers providing medium-voltage broadband carrier communication according to another embodiment of the present application.

Detailed ways

Hereinafter, the present application will be described in detail with reference to the drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

Power line communication (PLC for short), power line communication is a unique communication method of power system, and power line communication refers to the technology of high-speed transmission of analog or digital signals through the carrier mode by using the existing power line.

Capacitive voltage transformer: Capacitance Type Voltage Transformer (CVT for short) is divided by series capacitors, and then stepped down and isolated by electromagnetic transformer, as a voltage for meters, relay protection, etc. Transformer, capacitive voltage transformer can also couple the carrier frequency to the transmission line for long-distance communication, remote measurement, selective line high-frequency protection, remote control, teletype, etc.

The solution in this application document can be applied to overhead lines in the related art, and can be used to prevent interruption of carrier transmission due to interruption of an isolation switch.

Embodiment one

According to an embodiment of the present application, a circuit device is provided, including:

Capacitive voltage transformers are respectively arranged on both sides of the isolating switch in the overhead line;

The photoelectric integrated carrier machine is set on the overhead line and connected to the capacitive voltage transformers on both sides of the isolating switch.

Through the above device, capacitive voltage transformers are respectively installed on both sides of the isolating switch in the overhead line, and the capacitive voltage transformers are connected to the photoelectric integrated carrier machine. Using the above steps, a line that can carry out carrier wave transmission is established to avoid The carrier transmission is interrupted when the isolating switch is disconnected, and the lossless transmission of the carrier signal can be guaranteed when the isolating switch is closed or opened, which solves the problem that the communication of the carrier device in the related art may be interrupted.

Optionally, the device further includes: a power carrier two-in-one coaxial interface, which is used to connect the capacitive voltage transformers on both sides of the isolating switch through a coaxial cable, and connect to the photoelectric integrated carrier machine.

Optionally, the isolating switch includes a sulfur hexafluoride circuit breaker, namely SF6, or other switches or circuit breakers.

Optionally, one capacitive voltage transformer is provided on each side of the isolating switch.

Optionally, at least one capacitive voltage transformer is arranged on each side of the isolating switch.

Optionally, the photoelectric integrated carrier machine includes a power carrier communication coaxial electrical port for connecting to the power carrier two-in-one coaxial port.

Optionally, the optoelectronic integrated carrier machine is a medium-voltage broadband carrier equipment optoelectronic integrated carrier machine.

Optionally, the optoelectronic integrated carrier machine is arranged on a wire pile in an overhead line.

Optionally, the overhead line is a 10kV overhead line.

Optionally, the isolating switch is arranged on an electric pole in the overhead line.

The following will be described in conjunction with another embodiment of the present application.

In order to prevent the attenuation of the carrier signal by SF6 from being too large, and when the protection mechanism of SF6 is activated, the connection of the carrier device is interrupted. Therefore, it is necessary to install a device on the SF6 device to avoid the communication interruption of the carrier device, which will increase the overall investment of the carrier network. Cost, and the problem of adding one more device and one more point of failure.

The purpose of this application is to use the medium-voltage broadband carrier equipment to realize the signal transmission across the isolating switch, to ensure the lossless transmission of the carrier signal when the isolating switch is closed and opened, to reduce the overall investment cost of the carrier network and to make the construction simple and easy, and Reduce equipment failure points.

This application provides the application of medium-voltage broadband carrier equipment to realize the transmission of carrier signals across isolating switches, and the communication of medium-voltage broadband carrier signals can still be maintained after the isolating switch is disconnected. This application provides the installation of a photoelectric integrated carrier machine on a 10kV overhead line, and a capacitive voltage transformer is installed on both sides of the isolating switch. The two capacitive voltage transformers are connected to a power carrier two-in-one coaxial interface through a coaxial cable , The two-in-one coaxial interface of the power carrier is connected to the coaxial electrical port of the power carrier communication of the photoelectric integrated carrier machine, so that the normal transmission of the carrier signal can be guaranteed even when the isolating switch is closed or opened. Fig. 1 is a schematic diagram of double-coupling capacitive voltage transformers that provide medium-voltage broadband carrier communication according to another embodiment of the present application. As shown in Fig. 1, the isolating switch is provided with a carrier device, and the solution of another embodiment of the present application can be Applied to the wire pile shown in Figure 1.

The PLC coaxial electrical port and capacitive voltage transformer of the medium-voltage broadband carrier equipment photoelectric integrated carrier machine are used to realize the signal transmission across the isolation switch, and the lossless transmission of the carrier signal can be guaranteed when the isolation switch is closed or opened, reducing the The overall investment cost of the carrier network and the ease of construction and reduction of equipment failure points.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is Better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned application can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network composed of multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the application is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

1. A line device, characterized in that, comprising: Capacitive voltage transformers are respectively arranged on both sides of the isolating switch in the overhead line; The photoelectric integrated carrier machine is set on the overhead line and connected to the capacitive voltage transformers on both sides of the isolating switch. 2. The line device according to claim 1, wherein the device further comprises: The power carrier two-in-one coaxial interface is used to connect the capacitive voltage transformers on both sides of the isolating switch through a coaxial cable, and connect to the photoelectric integrated carrier machine. 3. The wiring device according to claim 1, characterized in that the disconnector comprises a sulfur hexafluoride circuit breaker. 4. The line device according to claim 1, characterized in that one capacitive voltage transformer is provided on each side of the isolating switch. 5 . The line device according to claim 1 , characterized in that, at least one capacitive voltage transformer is arranged on each side of the isolating switch. 5 . 6. The line device according to claim 1, characterized in that, The photoelectric integrated carrier machine includes a power carrier communication coaxial electrical port for connecting to the power carrier two-in-one coaxial port. 7. The line device according to claim 1, wherein the optoelectronic integrated carrier device is a medium-voltage broadband carrier equipment optoelectronic integrated carrier device. 8 . The line device according to claim 1 , wherein the photoelectric integrated carrier machine is arranged on a wire pile in an overhead line. 8 . 9. The line device according to claim 1, wherein the overhead line is a 10kV overhead line. 10. The line device according to claim 1, characterized in that, the isolating switch is arranged on an electric pole in the overhead line.