CN104901427A - Substation communication system - Google Patents
Substation communication system Download PDFInfo
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- CN104901427A CN104901427A CN201510369659.9A CN201510369659A CN104901427A CN 104901427 A CN104901427 A CN 104901427A CN 201510369659 A CN201510369659 A CN 201510369659A CN 104901427 A CN104901427 A CN 104901427A
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- 238000011144 upstream manufacturing Methods 0.000 claims description 4
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- 238000011084 recovery Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
The invention discloses a substation communication system, comprising a first communication channel, a second communication channel, a first self-loop device and a second self-loop device. The first communication channel comprises a first intra-station device, a first extra-station device and a first communication line which connects the first intra-station device and the second extra-station device. The second communication channel comprises a second intra-station device, a second extra-station device and a second communication line which connects the second intra-station device and the second extra-station device. The first self-loop device is connected with the first extra-station device through the first communication line. The first self-loop device is connected with the second intra-station device. In the first operating state, the first self-loop device self-loops the first intra-station device. The second self-loop device is connected with the second extra-station device through the second communication line and is connected with the first intra-station device. In the second operating state, the second self-loop device self-loops the second intra-station device. The substation communication system allows quick diagnosis for interrupt fault detection.
Description
Technical Field
The invention relates to the technical field of power system communication, in particular to a transformer substation communication system.
Background
With the continuous development of computer technology, the computing power is improved, the automation of the transformer substation is also technically improved, and the covered aspects are wider and wider. The responsibility of the intra-station communication system is more and more important, and the consequences caused by the interruption of the intra-station telecontrol communication are more and more serious.
At present, when the communication system has an interruption fault, a maintainer needs to go to the site to carry out self-loop experimental detection to confirm whether the interruption fault is in or out of a station, and then the maintainer informs a communication company of the working personnel to carry out processing, so that the working frequency is increased, and the working efficiency is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a substation communication system which can confirm whether a communication fault occurs inside or outside a station through a self-loop function, thereby realizing rapid diagnosis of interrupt fault detection and improving the working efficiency.
In order to achieve the purpose, the invention provides the following technical scheme:
a substation communication system, comprising: the system comprises a first communication channel, a second communication channel, a first self-loop device and a second self-loop device; wherein,
the first communication channel includes: a first intra-station device, a first extra-station device, and a first communication line connecting the first intra-station device and the first extra-station device;
the second communication channel includes: a second in-station device, a second out-station device, and a second communication line connecting the second in-station device and the second out-station device;
the first self-loop device is connected with the first off-site device through the first communication line; the first self-loop device is connected with the second in-station device, and in a first working state, the first self-loop device is used for self-loop of the first in-station device;
the second self-loop device is connected with the second station-outside device through the second communication line, and the second self-loop device is connected with the first station-inside device, and in a second working state, the second self-loop device is used for self-loop of the second station-inside device.
Preferably, in the above communication system, the first communication channel is a 101 communication channel adopting a 101 protocol;
the second communication channel is a 104 communication channel adopting a 104 protocol.
Preferably, in the communication system, the first in-station apparatus includes: the first switch, the first telecontrol machine and the modem are connected in sequence;
the first communication line includes: an audio distribution frame connected with the modem through a first uplink channel and a first downlink channel; and the first dispatching end is connected with the audio distribution frame.
Preferably, in the above communication system, the first uplink channel and the first downlink channel each include two parallel subchannels;
one sub-channel of the first uplink channel is butted with one sub-channel of the first downlink channel; the other subchannel of the first upstream channel is butted with the other subchannel of the first downstream channel.
Preferably, in the communication system, the second in-station apparatus includes: the second switch, the second telemechanical, the real-time switch and the router are connected in sequence;
the second communication line includes: a communication distribution frame connected with the router through a second uplink channel and a second downlink channel; and the second scheduling terminal is connected with the communication distribution frame.
Preferably, in the communication system, one end of the first self-loop device is connected to the second remote controller, and the other end of the first self-loop device is connected to the first outside-station apparatus through the first uplink path and the first downlink path.
Preferably, in the communication system, one end of the second self-loop device is connected to the first remote controller, and the other end of the second self-loop device is connected to the second outside-station apparatus through the second uplink path and the second downlink path.
Preferably, in the above communication system, the first self-loop apparatus includes: the receiving module is used for receiving the self-loop instruction; the execution module is used for executing the self-loop instruction and performing self-loop control; and the power supply module supplies power to the receiving module and the execution module.
Preferably, in the communication system, the second self-loop device has the same structure as the first self-loop device.
As can be seen from the above description, the substation communication system provided by the present invention includes: the system comprises a first communication channel, a second communication channel, a first self-loop device and a second self-loop device; wherein the first communication channel comprises: a first intra-station device, a first extra-station device, and a first communication line connecting the first intra-station device and the first extra-station device; the second communication channel includes: a second in-station device, a second out-station device, and a second communication line connecting the second in-station device and the second out-station device; the first self-loop device is connected with the first off-site device through the first communication line; the first self-loop device is connected with the second in-station device, and in a first working state, the first self-loop device is used for self-loop of the first in-station device; the second self-loop device is connected with the second station-outside device through the second communication line, and the second self-loop device is connected with the first station-inside device, and in a second working state, the second self-loop device is used for self-loop of the second station-inside device.
When any one of the first communication channel and the second communication channel has a communication interruption fault, the station equipment loop-back of the communication channel with the interruption fault is controlled through the corresponding loop-back equipment, whether the communication channel is in the station equipment or the station equipment at the position of the interruption fault can be confirmed according to the message receiving and sending state of the station equipment after the communication channel loop-back, the on-site loop-back experiment test is not needed, the quick diagnosis of the interruption fault detection is realized, and the working efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a substation communication system provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of another substation communication system provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a first self-loop device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a substation communication system provided in an embodiment of the present application.
The first communication channel includes: a first in-station device 12, a first out-of-station device 11, and a first communication line 13 connecting the first in-station device 12 and the first out-of-station device 11.
The second communication channel includes: a second in-station device 15, a second out-of-station device 14, and a second communication line 16 connecting the second in-station device 15 and the second out-of-station device 14.
The first self-loop apparatus 17 is connected to the first out-of-station device 11 through the first communication line 13; and the first self-looper device 17 is connected to the second in-station device 15, the first self-looper device 17 being adapted to self-looper the first in-station device 12 in the first operating state.
The first working state is a state when the second communication channel is normal in communication and the first communication channel has a communication interruption fault. In the first operating state, the first off-site apparatus 11 is abnormal in message due to communication interruption. At this time, the second intra-station apparatus 15 sends the first self-loop driving instruction and the first test packet signal to the first self-loop device 17, and the first self-loop device 17 controls the first intra-station apparatus 12 to perform self-loop according to the first self-loop driving instruction.
If the first off-station apparatus 11 can receive the first test message signal, it indicates that the communication with the first off-station apparatus 11 via the first communication line 13 is normal, and the interrupt failure of the first communication channel occurs in the first off-station apparatus 12, that is, the interrupt failure occurs in the station.
On the contrary, if the first off-site device 11 cannot receive the first test packet signal, it is proved that the communication between the first communication line 13 and the first off-site device 11 is not normal, which means that the first test packet signal cannot be transmitted through the first communication line 13 and the first off-site device 11, and there is an interruption fault in the communication channel portion from the first communication line 13 to the first off-site device 11, and it can be determined that the communication interruption fault occurs in the first communication line 13 outside the station, or in the first off-site device 11, or between them, i.e., it can be determined that the communication interruption fault occurs outside the station.
The second self-loop apparatus 18 is connected to the second off-station apparatus 14 via the second communication line 16, and the second self-loop apparatus 18 is connected to the first in-station apparatus 12, and in the second operation state, the second self-loop apparatus 18 is used to self-loop the second in-station apparatus 15.
The second working state is the state when the first communication channel is normal in communication and the second communication channel has communication interruption fault. In the second operating state, the message of the second off-site device 14 is abnormal due to the communication interruption. At this time, the first in-station apparatus 12 sends a second self-loop driving instruction and a second test packet signal to the second self-loop device 18, and the second self-loop device 18 controls the second in-station apparatus 15 to perform self-loop according to the second self-loop driving instruction.
If the second off-site device 14 can receive the second test message signal, which indicates that the communication with the second off-site device 14 via the second communication line 16 is normal, the interrupt failure of the second communication channel occurs in the second on-site device 15, that is, the interrupt failure occurs in the station.
On the contrary, if the second off-site device 14 cannot receive the second test packet signal, it is proved that the communication between the second communication line 16 and the second off-site device 14 is not normal, which means that the second test packet signal cannot be transmitted through the second communication line 16 and the second off-site device 14, and there is an interruption fault in the communication channel portion from the second communication line 16 to the second off-site device 14, and it can be determined that the communication interruption fault occurs in the second communication line 16 outside the station, or in the second off-site device 14, or between them, i.e., it can be determined that the communication interruption fault occurs outside the station.
In the present embodiment, the self-loop is in a short circuit setting, that is, the first self-loop apparatus 17 self-loops the first in-station apparatus 12 to short circuit the first in-station apparatus 12, and the second self-loop apparatus 18 self-loops the second in-station apparatus 15 to short circuit the second in-station apparatus 15. The equipment in the station of the communication channel with the communication interruption fault is looped by the corresponding loop-back equipment, so that whether the interruption fault occurs in the station or outside the station can be quickly judged.
In the first operating state, if it is determined that there is a communication interruption fault outside the station of the first communication channel, in order to further determine whether there is a communication interruption fault inside the station of the first communication channel at the same time, at this time, a second self-loop driving instruction and a second test message signal may be sent to the second self-loop device 18 by the first in-station device 12, if the second out-station device 14 may receive the second test message signal, it is indicated that the first in-station device 12 is in normal communication, that is, there is no communication interruption fault inside the station in the first communication channel, and if the second out-station device 14 cannot receive the second test message signal, it is indicated that the first in-station device 12 also has a communication interruption fault, that is, it is indicated that the first communication channel has both an in-station and an out-station communication interruption fault.
In the second operating state, if it is determined that there is a communication interruption fault outside the station of the second communication channel, in order to further determine whether there is a communication interruption fault inside the station of the second communication channel at the same time, at this time, the second in-station apparatus 15 may further send a first self-loop driving instruction and a first test message signal to the first self-loop device 17, if the first out-station apparatus 11 may receive the first test message signal, it is determined that the second in-station apparatus 15 is in normal communication, that is, there is no communication interruption fault inside the station of the second communication channel, and if the first out-station apparatus 11 cannot receive the first test message signal, it is determined that the second in-station apparatus 15 also has a communication interruption fault, that is, it is determined that the second communication channel has both an in-station and an out-station communication interruption fault.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another substation communication system provided in an embodiment of the present application, and in the implementation shown in fig. 2, the first communication channel is a 101 communication channel using a 101 protocol. The second communication channel is a 104 communication channel adopting a 104 protocol.
The first in-station apparatus 21 includes: a first switch 211, a first remote 212 and a modem 213 connected in sequence. The first communication line 22 includes: an audio distribution frame 221 connected to the modem 213 through a first upstream channel and a first downstream channel; a first dispatch terminal 222 connected to the audio distribution frame 221.
The second in-station apparatus 23 includes: a second switch 231, a second remote switch 232, a real-time switch 233, and a router 234 connected in sequence. The second communication line 24 includes: a communication distribution frame 241 connected with the router 234 through a second uplink channel (c) and a second downlink channel (c); and a second dispatch terminal 242 coupled to the communications patch panel 241.
In order to facilitate the test of the first scheduling terminal 222 for receiving and sending data, the first uplink channel and the first downlink channel both include two parallel sub-channels, one sub-channel of the first uplink channel is in butt joint with one sub-channel of the first downlink channel, and the other sub-channel of the first uplink channel is in butt joint with the other sub-channel of the first downlink channel. The corresponding sub-channels can be connected with each other through a switch.
In order to facilitate the test of the second scheduling terminal 242 for transceiving data, the second uplink channel (c) is connected to the second downlink channel (c). The second upward channel and the second downward channel can be connected by a switch.
The first self-loop apparatus 25 has one end connected to the second remote actuator 232 and the other end connected to the first station outside apparatus 22 through the first ascending path and the first descending path.
One end of the second self-looper device 26 is connected to the first remote actuator 212, and the other end is connected to the second outbound path 24 through the second outbound path.
When the fault occurs at the fault point C, the master end sends a self-loop command to the second remote unit 231 through the channel 104, and the second remote unit 231 sends a first self-loop driving command to the first self-loop device 25 to self-loop the channel. At this time, the master station end receives and transmits the message normally, and judges that the fault occurs in the station of the first communication channel. The master station terminal is a master station comprising a first scheduling terminal and a second scheduling terminal. The power station including the first in-station apparatus and the second in-station apparatus is a scheduled plant station.
When the fault occurs at the fault point D, the master end sends a self-loop command to the first remote engine 211 through the channel 101, and the first remote engine 211 sends a second self-loop driving command to the second self-loop device 26 to self-loop the channel. At this time, the main station end is still abnormal in receiving and sending, no message exists, and the fault is judged to be out of the station.
In the embodiment of the present application, both inside and outside of a station mean that a communication interruption fault occurs inside or outside of the station.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a first self-loop apparatus according to an embodiment of the present application, where the first self-loop apparatus 25 includes: a receiving module 31 for receiving a self-loop instruction; an execution module 32 for executing the self-loop instruction and performing self-loop control; a power module 33 for supplying power to the receiving module 31 and the executing module 32.
For the first self-loop device 25, the receiving end a is configured to connect with the second remote control 232, and is configured to receive the first closed-loop command and the second test message signal sent by the second remote control 232, and the sending end B is configured to connect with the first communication line 22.
The second self-loop device has the same structure as the first self-loop device, and also comprises: the receiving module is used for receiving the self-loop instruction; an execution module for executing the self-loop instruction and controlling the self-loop in the second station; and the power supply module supplies power to the receiving module and the execution module.
In this embodiment, the receiving module may receive and interpret commands in the in-station protocol messages such as 103 and MMS sent by the corresponding remote agent. The first station internal device and the second station internal device are both provided with a self-loop state and a normal operation state, the self-loop state is that a normally open node is closed, and the normally closed node is opened. The normal operation state is that the normally open node is disconnected and the normally closed node is closed. The in-station device sends a self-loop driving command and a recovery command through the corresponding telecontrol machine to carry out state switching.
The command execution module is composed of a double-position relay with a plurality of normally open and normally closed nodes, the normally closed auxiliary node is connected in series to the corresponding telemechanical, the normally open auxiliary node is connected in parallel to the corresponding uplink channel and the corresponding downlink channel, and the receiving module reads the self-loop driving command or the recovery command to drive the relay to act and reset so as to switch the state.
The power supply module has the functions of voltage stabilization, alternating current and direct current self-adaptation and power supply DC110/220 compatibility.
Before the self-loop equipment is used, a corresponding remote control point is added in a remote machine in a station, and a corresponding remote control point is also added in an external device, so that an end remote control interface is perfected. The remote control mode is consistent with the conventional remote control mode, and the operation is executed after relevant communication with the telecontrol and self-loop equipment is carried out: preset-return-check-execute.
The self-loop equipment can be used in a station control layer network structure of double networks, for example, two paths of provincial dispatching and local dispatching access in a 220kV transformer substation can be remotely controlled with each other or the channels 101 and 104 in the substation can be remotely controlled with each other.
In the embodiment of the application, the audio distribution frame is used for realizing the functions of connection, distribution, line adjustment, switching and the like of the audio lines and the communication lines in the 101 channel. The modem is used for translating the analog signal into a digital signal which can be recognized by a computer (the data in the channel 101 is transmitted by the analog signal), and the communication between the telecontrol machine in the station and the main station terminal equipment is realized. The remote machine is used for modulating and downloading the signals of the master station end, and functions of remote measurement, remote signaling, remote control, remote regulation and the like are realized. The communication distribution frame is used for realizing the functions of connection, distribution line adjustment, switching and the like of the intra-station 2M line and the extra-station communication line in the 104 channel. The router is used for translating data information between different networks or network segments so that the data information can mutually read the data of the other network or network segments, and communication between the telecontrol machine and the main station end equipment in the station is realized.
According to the above description, the substation communication system can realize the rapid detection of the communication fault in the communication channel, and improves the working efficiency.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to 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 (9)
1. A substation communication system, comprising: the system comprises a first communication channel, a second communication channel, a first self-loop device and a second self-loop device; wherein,
the first communication channel includes: a first intra-station device, a first extra-station device, and a first communication line connecting the first intra-station device and the first extra-station device;
the second communication channel includes: a second in-station device, a second out-station device, and a second communication line connecting the second in-station device and the second out-station device;
the first self-loop device is connected with the first off-site device through the first communication line; the first self-loop device is connected with the second in-station device, and in a first working state, the first self-loop device is used for self-loop of the first in-station device;
the second self-loop device is connected with the second station-outside device through the second communication line, and the second self-loop device is connected with the first station-inside device, and in a second working state, the second self-loop device is used for self-loop of the second station-inside device.
2. The substation communication system according to claim 1, wherein the first communication channel is a 101 communication channel using a 101 protocol;
the second communication channel is a 104 communication channel adopting a 104 protocol.
3. The substation communication system of claim 2, wherein the first in-station device comprises: the first switch, the first telecontrol machine and the modem are connected in sequence;
the first communication line includes: an audio distribution frame connected with the modem through a first uplink channel and a first downlink channel; and the first dispatching end is connected with the audio distribution frame.
4. The substation communication system of claim 3, wherein the first upstream channel and the first downstream channel each comprise two parallel sub-channels;
one sub-channel of the first uplink channel is butted with one sub-channel of the first downlink channel; the other subchannel of the first upstream channel is butted with the other subchannel of the first downstream channel.
5. A substation communication system according to claim 3, wherein the second in-station device comprises: the second switch, the second telemechanical, the real-time switch and the router are connected in sequence;
the second communication line includes: a communication distribution frame connected with the router through a second uplink channel and a second downlink channel; and the second scheduling terminal is connected with the communication distribution frame.
6. The substation communication system according to claim 5, wherein the first self-loop device is connected to the second telemechanical at one end and to the first off-site device at the other end via the first up channel and the first down channel.
7. The substation communication system according to claim 5, wherein the second self-loop device is connected to the first telemechanical at one end and to the second off-site device at the other end via the second up channel and the second down channel.
8. Substation communication system according to any of the claims 1-7, wherein the first self-loop device comprises: the receiving module is used for receiving the self-loop instruction; the execution module is used for executing the self-loop instruction and performing self-loop control; and the power supply module supplies power to the receiving module and the execution module.
9. A substation communication system according to any of claims 1-7, wherein the second self-loop device is structurally identical to the first self-loop device.
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| CN201510369659.9A CN104901427B (en) | 2015-06-29 | 2015-06-29 | A kind of Substation Communication System |
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| CN108614479A (en) * | 2018-04-23 | 2018-10-02 | 国网天津市电力公司电力科学研究院 | A kind of communication port having automatic switching function is from loop device |
| CN108809692A (en) * | 2018-04-23 | 2018-11-13 | 国网天津市电力公司电力科学研究院 | A kind of Fault Locating Method for 101 stipulations communication port of dispatching automation |
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| CN104901427B (en) | 2018-01-02 |
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