CN205232224U - Telecontrol channel fault detection system and auto -change over device thereof - Google Patents

Abstract

The present application provides a remote control channel fault detection system and its switching device. The switching device includes: at least one switch with three-side terminals, wherein the first terminal of the switch is connected to a communication device, The connecting terminal at the second end is connected with the telecontrol device, and the connecting terminal at the third end is directly short-circuited by sending and receiving, and is connected with the channel monitoring equipment at the same time. By operating the switching switch on the switching device, it is possible to quickly and conveniently detect the quality of the communication channel, and provide convenience for daily telecontrol equipment work, avoiding having to wait for maintenance personnel to arrive at the scene when a telecontrol channel fails It can only be dealt with later, which is not only time-consuming and laborious, but also cannot quickly determine the fault location, prolonging the occurrence of the problem of power grid fault state operation time.

Description

A telecontrol channel fault detection system and its switching device

technical field

The present application relates to the technical field of substation remote control channels, in particular to a remote control channel fault detection system and a switching device thereof.

Background technique

The substation remote control channel is an automatic device for collecting various information between dispatching and substations and automatically transmitting and exchanging them in real time. It is the basis of comprehensive automation of power system dispatching. There are generally four types of telecontrol channels in automated substations: CDT protocol four-wire channel, conventional 101 four-wire channel, digital 101 three-wire channel, and 104 protocol network channel. Among them, CDT protocol four-wire channels and conventional 101 four-wire channels are widely used in early substations, and later automation stations are generally equipped with digital 101 three-wire channels and 104 protocol network channels.

At present, when a communication fault occurs in the telecontrol channel, maintenance personnel need to go to the substation site, untie the channel line, and eliminate the fault by short-circuiting the circuit and checking the device. , rather than substation reasons.

Therefore, in the prior art, when a fault occurs in the telecontrol channel, it must wait for the maintenance personnel to arrive at the scene to deal with it, which is time-consuming and laborious, and the fault location cannot be quickly judged, prolonging the operation time of the grid fault state.

Utility model content

In view of this, the application provides a telecontrol channel fault detection system and its switching device. Through the switching switch on the operating device, it can quickly and conveniently detect the quality of the communication channel, and it can be used for daily telecontrol equipment. to offer comfort.

In order to achieve the above object, the application provides the following technical solutions:

A remote control channel switching device, which is applied in a remote control channel fault detection system, comprising: at least one switch with three-side terminals, wherein,

The first terminal of the changeover switch is connected to the communication equipment, the second terminal is connected to the telecontrol device, and the third terminal is directly short-circuited for sending and receiving, and at the same time is connected to the channel monitoring equipment.

Preferably, the changeover switch is specifically a double air switch.

A remote channel fault detection system, comprising: a remote channel switching device and a channel monitoring device connected to the remote channel switching device, wherein,

The remote control channel switching device includes: at least one switch with three-side terminals;

The first terminal of the changeover switch is connected to the communication equipment, the second terminal is connected to the telecontrol device, and the third terminal is directly connected to the channel monitoring equipment.

Preferably, the changeover switch is specifically a double air switch.

It can be seen from the above technical solutions that the present application provides a remote control channel fault detection system and its switching device, the switching device includes: at least one switch with three-side terminals, wherein the first terminal of the switch is connected to The terminal is connected to the communication equipment, the terminal at the second end is connected with the telecontrol device, and the terminal at the third end is directly short-circuited by sending and receiving, and is connected with the channel monitoring equipment at the same time. By operating the switching switch on the switching device, it is possible to quickly and conveniently detect the quality of the communication channel, and provide convenience for daily telecontrol equipment work, avoiding having to wait for maintenance personnel to arrive at the scene when a telecontrol channel fails It can only be dealt with later, which is not only time-consuming and laborious, but also cannot quickly determine the fault location, prolonging the occurrence of the problem of power grid fault state operation time.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the utility model, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a schematic structural diagram of a telecontrol channel switching device provided in Embodiment 1 of the present application;

Fig. 2 is a schematic diagram of an air switch provided by the application;

Fig. 3 is a schematic diagram of a telecontrol channel switching device provided in Embodiment 1 of the present application;

FIG. 4 is a schematic structural diagram of a telecontrol channel fault detection system provided in Embodiment 2 of the present application.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In order to avoid the occurrence of faults in the telecontrol channel, it is necessary to wait for the maintenance personnel to arrive at the scene before processing, which is not only time-consuming and laborious, but also cannot quickly determine the fault location, prolonging the operation time of the power grid fault state, this application provides a A telecontrol channel fault detection system and a switching device thereof, by operating a switch on the switching device, can quickly and conveniently detect whether the communication channel is good or bad, and provide convenience for daily telecontrol equipment work. The specific plan is as follows:

Embodiment one

Embodiment 1 of the present application provides a remote control channel switching device, as shown in FIG. 1 . FIG. 1 is a schematic structural diagram of a remote control channel switching device provided in Embodiment 1 of the present application. The remote channel switching device is applied in the remote channel fault detection system, including: at least one switch 101 with three-side terminals (for the convenience of expression, only one switch is shown in the figure), wherein,

The first terminal of the changeover switch 101 is connected to the communication device 102, the second terminal is connected to the telecontrol device 103, and the third terminal is directly short-circuited by sending and receiving (not shown in the figure), and simultaneously connected to the channel monitoring equipment 104 connected.

Specifically, the diverter switch is a diverter switch similar to a double switch, and is installed on the telecontrol panel. The telecontrol panel is a metal cabinet that collectively installs the telecontrol devices of the substation, and is generally installed in the main control room of the substation. .

When the remote control channel is in normal operation, the double-throw switch knife connected to the communication device hits the terminal connected to the remote control device. At this time, the communication device is connected to the remote control device, and the channel can operate normally; when the remote control channel fails, The personnel on duty in the substation flip the switch to direct the switch to the terminal at the third terminal, and the station terminal short-circuits the channel. The master station can quickly determine whether the fault is caused by the telecontrol equipment of the substation or by observing the sending and receiving of channel messages. Channel or master station failure, so as to clarify the responsible person, to achieve the purpose of quick elimination. Specifically, the machine at the master station sends messages all the time. If the side channel of the substation is short-circuited, the message sent by the master station returns to the master station after making a loop in the substation. The personnel of the master station observe whether the sent and received messages are Consistent to judge channel quality.

The channel monitor is connected to the third end, and the plant personnel can visually check the messages of the uplink and downlink channels, which provides a quick tool for channel debugging and maintenance.

It should be noted that the double-throw switch itself has three terminal terminals, wherein each terminal has two terminals, the first terminal of the double-throw switch is connected to the communication device, and the second terminal is connected to the communication device. For the telecontrol device, the two terminals of the terminal on the third side are short-circuited by themselves.

In this application, since the remote control channel belongs to a weak current circuit, there is not much transmission power in the channel during operation, so a general electrical switch is sufficient to meet the use requirements. After many tests, it was found that the auxiliary switch of the air switch has two pairs of contacts, normally open and normally closed, which just meets the requirements for switching terminals on three sides. Therefore, in this application, the switch can be specifically a double air switch, but the specific Do limit, you can choose according to your needs.

The specific schematic diagram of the air switch is shown in Figure 2, including terminals a, b, and c. If any group of ac or bc is used as the channel, and the b terminals of the two auxiliary switches are short-circuited, then only a few auxiliary switches need to be connected. Switches can be combined to form a switching circuit according to the requirements of the channel.

Among them, as shown in Figure 3, Figure 3 is a schematic diagram of a telecontrol channel switching device provided in Embodiment 1 of the present application, as shown in the figure, including: level meter 1, switch 2, the left half of Figure 3 Wiring for three-wire channels and the right half for four-wire channels.

When the operator of the substation turns the switch to the running position, the normally open contact of the device is closed, the "channel receiving" and "device sending" are connected, the "channel sending" and "device receiving" are connected, and the communication channel can operate normally. When the switch is turned to the self-loop position, the normally closed contact of the device is closed, and the "channel receive" and "channel send" are shorted internally to realize the self-loop function of the channel.

It can be known from the above technical solutions that Embodiment 1 of the present application provides a switching device applied in a remote control channel fault detection system, the switching device includes: at least one switch with three-side terminals, wherein the switch The connecting terminal at the first end is connected to the communication equipment, the connecting terminal at the second end is connected with the telecontrol device, and the connecting terminal at the third end is directly short-circuited by sending and receiving, and is connected with the channel monitoring equipment at the same time. By operating the switching switch on the switching device, it is possible to quickly and conveniently detect the quality of the communication channel, and provide convenience for daily telecontrol equipment work, avoiding having to wait for maintenance personnel to arrive at the scene when a telecontrol channel fails It can only be dealt with later, which is not only time-consuming and laborious, but also cannot quickly determine the fault location, prolonging the occurrence of the problem of power grid fault state operation time. Compared with the existing technology, the telecontrol channel switching device is not only simple and convenient to operate, but also saves working time, and provides a reliable basis for quickly determining the fault location and distinguishing personnel responsibilities.

Embodiment two

Embodiment 2 of the present application provides a remote control channel fault detection system, as shown in FIG. 4 , which is a schematic structural diagram of a remote control channel fault detection system provided in Embodiment 2 of the present application. The system includes: a remote control channel switching device 201 and a channel monitoring device 202 connected to the remote control channel switching device 201, wherein,

The telecontrol channel switching device 201 includes: at least one switch 2011 with three-side terminals (for the convenience of expression, only one switch is shown in the figure);

The first terminal of the switch 2011 is connected to the communication device 203 , the second terminal is connected to the telecontrol device 204 , and the third terminal is connected to the channel monitoring device 202 directly for short-circuiting.

Specifically, the diverter switch is a diverter switch similar to a double switch, and is installed on the telecontrol panel. The telecontrol panel is a metal cabinet that collectively installs the telecontrol devices of the substation, and is generally installed in the main control room of the substation. .

When the remote control channel is in normal operation, the double-throw switch knife connected to the communication device hits the terminal connected to the remote control device. At this time, the communication device is connected to the remote control device, and the channel can operate normally; when the remote control channel fails, The personnel on duty in the substation flip the switch to direct the switch to the terminal at the third terminal, and the station terminal short-circuits the channel. The master station can quickly determine whether the fault is caused by the telecontrol equipment of the substation or by observing the sending and receiving of channel messages. Channel or master station failure, so as to clarify the responsible person, to achieve the purpose of quick elimination. Specifically, the machine at the master station sends messages all the time. If the side channel of the substation is short-circuited, the message sent by the master station returns to the master station after making a loop in the substation. The personnel of the master station observe whether the sent and received messages are Consistent to judge channel quality.

The channel monitoring equipment is connected at the third end, and the plant personnel can visually check the messages of the uplink and downlink channels, which provides a quick tool for channel debugging and maintenance.

It should be noted that the double-throw switch itself has three terminal terminals, wherein each terminal has two terminals, the first terminal of the double-throw switch is connected to the communication device, and the second terminal is connected to the communication device. For the telecontrol device, the two terminals of the terminal on the third side are short-circuited by themselves.

In this application, since the remote control channel belongs to a weak current circuit, there is not much transmission power in the channel during operation, so a general electrical switch is sufficient to meet the use requirements. After many tests, it was found that the auxiliary switch of the air switch has two pairs of contacts, normally open and normally closed, which just meets the requirements for switching terminals on three sides. Therefore, in this application, the switch can be specifically a double air switch, but the specific Do limit, you can choose according to your needs.

It should be noted that the same places in the second embodiment of the present application and the first embodiment may refer to each other, and details will not be repeated in this embodiment.

It can be known from the above technical solutions that Embodiment 2 of the present application provides a remote channel fault detection system, the switching device includes: a remote channel switching device and a channel monitoring device connected to the remote channel switching device, wherein , the remote control channel switching device includes: at least one switch with three-side terminals; the first terminal of the switch is connected to the communication device, the second terminal is connected to the telecontrol device, and the third terminal The connecting terminal is directly short-circuited by sending and receiving, and is connected with the channel monitoring equipment at the same time. The on-duty personnel of the substation can quickly and conveniently detect the quality of the communication channel by operating the switch on the system, and provide convenience for the daily telecontrol equipment work, avoiding the need to wait for maintenance when the telecontrol channel fails It can only be handled after the personnel arrive at the scene, which is not only time-consuming and laborious, but also cannot quickly determine the fault location, prolonging the occurrence of the problem of power grid fault state operation time. Compared with the existing technology, the telecontrol channel switching device is not only simple and convenient to operate, but also saves working time, and provides a reliable basis for quickly determining the fault location and distinguishing personnel responsibilities.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. a telecontrol channel switching device shifter, is characterized in that, this application of installation, in telecontrol channel fault detection system, comprising: at least one has the diverter switch of three side terminal, wherein,

The first end binding post of described diverter switch is connected with communication equipment, and the second terminated line terminal is connected with telemechanical apparatus, and the 3rd terminated line terminal directly receives and dispatches short circuit, is connected with path monitoring equipment simultaneously.

2. telecontrol channel switching device shifter according to claim 1, is characterized in that, described diverter switch is specially duplex air switch.

3. a telecontrol channel fault detection system, is characterized in that, comprising: telecontrol channel switching device shifter and the path monitoring equipment be connected with described telecontrol channel switching device shifter, wherein,

Described telecontrol channel switching device shifter comprises: at least one has the diverter switch of three side terminal;

The first end binding post of described diverter switch is connected with communication equipment, and the second terminated line terminal is connected with telemechanical apparatus, and the 3rd terminated line terminal directly receives and dispatches short circuit, is connected with described path monitoring equipment simultaneously.

4. telecontrol channel fault detection system according to claim 3, is characterized in that, described diverter switch is specially duplex air switch.