CN102664466A - Feeder line automation system - Google Patents

Abstract

The invention discloses a feeder automation system, which comprises a plurality of feeder measurement and control terminals for detecting fault information and is respectively connected to the feeder measurement and control terminals through a communication network, collects switch position information and fault information sent by the feeder measurement and control terminals, and separately A plurality of fault processing devices for processing faults based on received information. In the feeder automation system disclosed in the embodiment of the present invention, each fault processing device can independently obtain all the information of the entire feeder automation system, and handle system fault events. When any fault processing device has a problem or communication is interrupted, it will still There are other normal fault handling devices that can complete fault location, isolation, and power supply recovery, making the feeder automation system more reliable; meanwhile, the feeder automation system disclosed in the embodiment of the present invention has no special performance for existing feeder monitoring and control terminals Requirements, no need to modify it, the system configuration is simple and easy.

Description

A feeder automation system

technical field

The invention relates to the field of power system distribution network automation, and more specifically relates to a feeder automation system.

Background technique

Feeder automation refers to the automation of feeder lines between substation outgoing lines and user electrical equipment. Its content can be summarized into two aspects: one is user detection, data measurement and operation optimization under normal conditions; the other is fault conditions under fault conditions. Detection, fault isolation, location and restoration of power control. In the actual power distribution work, in order to ensure the comprehensive power quality of users, the fault handling performance of the feeder automation system has become an important indicator of the distribution automation task.

There are two kinds of feeder automation systems in the prior art, one is the feeder automation system based on the master station; the other is the feeder automation system based on distributed peer-to-peer communication. Among them, the feeder automation system based on the main station generally includes a three-layer structure, namely: the main station layer, the sub-station layer and the terminal layer, and the information interaction between different layers depends on the communication system; usually, the terminal realizes the acquisition of fault information , the substation realizes the location and isolation of the fault point, and the master station realizes the recovery control of the non-fault area, and only through the mutual communication and cooperation of the master station layer, the substation layer and the terminal layer, can the various tasks of fault handling be completed. For the feeder automation system based on distributed peer-to-peer communication, each feeder measurement and control terminal device is required to have the capability of peer-to-peer communication; when a fault occurs on the line, the fault location and fault isolation are completed through the mutual communication of each feeder measurement and control terminal device. Restoring power, etc.

From the above, it can be seen that when the feeder automation system in the prior art is used to deal with faults, it has certain shortcomings, that is, the feeder automation system based on the master station is too dependent on the entire master station, and when the master station When the system crashes, the entire feeder automation system will be completely paralyzed, so the reliability is poor; and the feeder automation system based on distributed peer-to-peer communication requires all terminal devices to have peer-to-peer communication capabilities, so the performance requirements of the terminal devices are high. , and its configuration is complex.

Contents of the invention

In view of this, the present invention provides a feeder automation system to overcome the problems of poor reliability, high performance requirements and complex configuration of terminal devices in the prior art.

To achieve the above object, the present invention provides the following technical solutions:

A feeder automation system comprising:

Multiple feeder monitoring and control terminals for detecting fault information;

A plurality of fault processing devices respectively connected to the feeder measurement and control terminal through a communication network, the plurality of fault processing devices respectively collect switch position information and fault information sent by the feeder measurement and control terminal, and according to the switch position information and fault information Locating the fault point, and determining that the feeder measurement and control terminal where the switch connected to the fault point is located is the feeder measurement and control terminal to be processed, and the plurality of fault processing devices respectively send isolation commands to the feeder measurement and control terminal to be processed;

When the feeder measurement and control terminal to be processed receives the isolation command sent by any one of the plurality of fault processing devices, execute the isolation command, and after the isolation is successful, feedback the isolation success to the plurality of fault processing devices information;

After receiving the isolation success information, the plurality of fault processing devices restore power supply to non-faulty areas according to a preset restoration scheme.

Optionally, the fault handling device includes:

Collect the switch position information and fault information reported by the feeder measurement and control terminal, and after the processor determines the location of the fault point and determines the feeder measurement and control terminal to be processed, sends an isolation command to the feeder measurement and control terminal to be processed, and receives the pending The information interface for processing the isolation success information fed back by the feeder monitoring and control terminal;

According to the switch position information and fault information, locate the fault point and determine the feeder measurement and control terminal to be processed, and after receiving the isolation success information fed back by the feeder measurement and control terminal to be processed, start the preset recovery plan to restore the power supply in the non-faulty area. .

Optionally, the processor includes:

Analyzing and processing the switch position information and fault information, judging the location of the fault point, and determining the feeder measurement and control terminal where the switch connected to the fault point is located as the fault location processor of the feeder measurement and control terminal to be processed;

a command generation processor that generates isolated commands;

After receiving the isolation success information fed back by the to-be-processed feeder measurement and control terminal, a power supply recovery processor for recovering power supply in non-faulty areas is activated with a preset recovery scheme.

Optionally, the command generation processor includes:

A judging module that judges that the required isolating switch is a load switch or a circuit breaker;

In the case that the switch connected to the fault point is a load switch: generate a command to disconnect the main switch sent to the substation, and after receiving the successful message of disconnecting the main switch returned by the substation, generate and send it to the feeder measurement and control terminal to be processed The isolation command, and in the case that the switch connected to the fault point is a circuit breaker: directly generate a command generation module that is sent to the feeder measurement and control terminal to be processed.

Optionally, the plurality of fault processing devices are arranged in a substation or at a node position of a power distribution line.

Optionally, the communication network is optical fiber Ethernet.

Optionally, the feeder measurement and control terminal sends switch position information and fault information, including:

The feeder monitoring and control terminal sends switch position information and fault information according to the preset message length.

It can be known from the above technical solutions that, compared with the prior art, the embodiment of the present invention discloses a feeder automation system, the feeder automation system includes a plurality of feeder measurement and control terminals for detecting fault information and communicating with the feeder respectively through a communication network. The measurement and control terminals are connected to collect the switch position information and fault information sent by the feeder measurement and control terminals, and a plurality of fault processing devices that perform fault processing according to the received information. In the feeder automation system disclosed in the embodiment of the present invention, each fault processing device can independently obtain all information of the entire feeder automation system, and process fault events of the system. When any fault processing device has a problem or communication is interrupted, it still There are other normal fault handling devices that can complete fault location, isolation, and power supply recovery, making the feeder automation system more reliable; meanwhile, the feeder automation system disclosed in the embodiment of the present invention has no special performance for existing feeder monitoring and control terminals Requirements, no need to modify it, the system configuration is simple and easy.

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 drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a schematic layout diagram of the feeder automation system structure of the multi-fault processing device disclosed in the embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a fault handling device disclosed in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a processor disclosed in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a command generation processor disclosed in an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

Fig. 1 is a schematic structural diagram of the feeder automation system of the multi-fault processing device disclosed in the embodiment of the present invention. Referring to Fig. 1, the feeder automation system includes a plurality of feeder measurement and control terminals DT1~DT6 for detecting fault information, and also includes A plurality of fault processing devices 1 to 3 respectively connected to the feeder measurement and control terminal, the plurality of fault processing devices respectively collect switch position information and fault information sent by the feeder measurement and control terminal, and according to the switch position information and fault information Locating the fault point, and determining that the feeder measurement and control terminal where the switch connected to the fault point is located is the feeder measurement and control terminal to be processed, and the plurality of fault processing devices respectively send isolation commands to the feeder measurement and control terminal to be processed;

When the feeder measurement and control terminal to be processed receives the isolation command sent by any one of the plurality of fault processing devices, execute the isolation command, and after the isolation is successful, feedback the isolation success to the plurality of fault processing devices information;

After receiving the isolation success information, the plurality of fault processing devices restore power supply to non-faulty areas according to a preset restoration scheme.

Of course, Fig. 1 is only an example diagram of a feeder automation system provided with 3 fault handling devices. Based on the concept of the present invention, 5, 6 or any number of fault processing devices can be set in the feeder automation system. In Fig. 1 The 3 fault handling devices are respectively set near the 3 power points D1~D3;

Among them, each feeder measurement and control terminal includes two or three switches, DTU1 includes two switches K1-1 and K1-2, DTU2 includes three switches K2-1, K2-2 and K2-3, and DTU3 includes K3-1 and K3-2 two switches, DTU4 includes K4-1 and K4-2 two switches, DTU5 includes K5-1 and K5-2 two switches, DTU6 includes K6-1 and K6-2 two switches switch.

In the event of a fault, multiple fault processing devices collect the switch position information and fault information on the communication network respectively, and process the detected fault events respectively. When the fault measurement and control terminal to be processed receives any fault processing device When the isolation command is issued, execute the isolation command, if the feeder measurement and control terminal to be processed receives the same fault from different fault processing devices again or multiple times within the preset time length from the execution of the isolation command. When the quarantine command is executed, it is not executed.

Wherein, the specific structure of the feeder measurement and control terminal may include: a fault detector for detecting fault information, a message interface for sending switch position information and fault information according to a preset message length, and receiving commands sent by a fault processing device and a command execution processor for executing the command sent by the fault handling device.

In the feeder automation system, a plurality of fault processing devices can separately collect fault information and perform fault analysis and processing work independently; due to the high speed of communication network dissemination of information and the limited scope of the feeder automation system, in general, each The time for collecting fault information by each fault processing device is very close to processing the fault, and each fault processing device performs fault processing independently. Therefore, the same feeder measurement and control terminal may receive signals from different The same command of the fault handling device, for example, DTU2 receives 5 commands from the isolating switch K2-2 within a short period of time, then DTU2 receives and executes the command of the isolating switch K2-2 at the earliest, and then receives the command within a very short period of time. The same command received will not be executed again; the short time period mentioned can be determined by the design operation and maintenance personnel through experiments, and stored in the feeder measurement and control terminal as a preset time length in advance.

Wherein, the communication network is preferably optical fiber Ethernet; in optical fiber Ethernet communication, a socket connection based on TPC (Transmission Control Protocol) can be established, with the fault handling device as the server and the feeder measurement and control terminal as the client, each A fault processing device has established an independent socket connection with each feeder measurement and control terminal to specifically transmit relevant information of fault events; the transmission of information between the fault processing device and the feeder measurement and control terminal is according to preset The length of the message is passed.

In order to facilitate the understanding of the fault handling process of the feeder automation system disclosed in the embodiment of the present invention, an example is given below; referring to FIG. Points D2 and D3 are disconnected, and only the side of the power point D1 has current flowing out. When it reaches the fault point, a short circuit occurs, then the current passing through the switches K1-1, K1-2, K2-1 and K2-2 is due to Short circuit and excessive current will generate a fault signal. At this time, DTU1 and DTU2 that detect the fault signal will report the fault signal and the corresponding switch position signal to the three fault processing devices. The fault processing device is based on the network topology and switch position. Information, determine that the fault point is between the switch K2-2 and the switch K3-1, and then send the commands of the isolating switch K2-2 and the isolating switch K3-1 to DTU2 and DTU3 respectively, and when the three fault processing devices are normal , DTU2 and DTU3 will receive the commands of the three isolation switches K2-2 and switch K23-1 at almost the same time, but only execute them once. After the isolation is successful, they will notify the three fault processing devices and the three fault processing The device restores power to non-faulty areas according to a preset recovery plan.

Wherein, the plurality of fault processing devices can be set in the substation, that is, at the power point, or at a key node position of the line; in a schematic example, the structure of the fault processing device can be referred to in Figure 2, Fig. 2 is a schematic structural diagram of a fault processing device disclosed in an embodiment of the present invention. As shown in Fig. 2, the fault processing device 20 may include:

Collect the switch position information and fault information reported by the feeder measurement and control terminal, and send an isolation command to the feeder measurement and control terminal to be processed after the processor determines the location of the fault point and determines the feeder measurement and control terminal to be processed, and receives the pending An information interface 201 for processing the isolation success information fed back by the feeder measurement and control terminal;

The information interface 201 is responsible for receiving the fault information and switch position information reported by all feeder measurement and control terminals, and sending the remote command issued by the processor in the fault handling device to the feeder measurement and control terminal; the processor sends the fault information and switch position information Combined judgment to determine which switches the fault point is located between;

According to the switch position information and fault information, locate the fault point and determine the feeder measurement and control terminal to be processed, and after receiving the isolation success information fed back by the feeder measurement and control terminal to be processed, start the preset recovery plan to restore the power supply in the non-faulty area. 202;

After analyzing and judging the fault information and switch position information, the processor determines which switches the fault point is located between, further determines the switch that needs to be isolated, and then issues an isolation command to the feeder measurement and control terminal that manages the switch that needs to be isolated, That is, the feeder measurement and control terminal to be processed, so that the feeder measurement and control terminal to be processed executes an isolation command and disconnects the switch that needs to be isolated; after the feeder measurement and control terminal to be processed successfully isolates the switch that needs to be isolated, it will send an isolation success message to Multiple fault processing devices, after receiving the isolation success information, the multiple fault processing devices call the corresponding preset power supply recovery plan according to the isolated switch, so that the power consumption in the non-faulty area returns to normal.

In a schematic example, the specific structure of the processor 202 may refer to FIG. 3 , which is a schematic structural diagram of a processor disclosed in an embodiment of the present invention. Referring to FIG. 3 , the processor 202 may include:

Analyzing and processing the switch position information and fault information, judging the location of the fault point, and determining the feeder measurement and control terminal where the switch connected to the fault point is located as the fault location processor 301 of the feeder measurement and control terminal to be processed;

a command generation processor 302 that generates an isolation command;

A schematic specific structure of the command generation processor 302 can be referred to FIG. 4, which is a schematic structural diagram of a command generation processor disclosed in an embodiment of the present invention. include:

A judging module 401 that judges that the required isolating switch is a load switch or a circuit breaker;

Of course, the judging module is only used to complete the work of judging that the required isolating switch is a load switch or a circuit breaker, as long as it is a component that has just completed the above work, such as a judging processor;

In the case that the switch connected to the fault point is a load switch: generate a command to disconnect the main switch sent to the substation, and after receiving the successful message of disconnecting the main switch returned by the substation, generate and send it to the feeder measurement and control terminal to be processed The isolation command, and in the case that the switch connected to the fault point is a circuit breaker: directly generate the command generation module 402 sent to the feeder measurement and control terminal to be processed;

In the case where the isolating switch is a load switch, in order to ensure safety, it is first necessary to disconnect the power point, that is, the main switch of the substation. ; The command generation module can also be called a power supply command generation processor;

After receiving the isolation success information fed back by the feeder measurement and control terminal, the power supply restoration processor 303 that restores the power supply in the non-faulty area is activated by a preset restoration scheme.

In the embodiment of the present invention, each fault processing device can obtain all the information of the entire feeder automation system, and can more comprehensively complete the functions of fault processing and power supply restoration; since the fault processing device obtains the information of the entire feeder automation system, when When there is a problem with any fault processing device or when the communication is interrupted, there are still other normal fault processing devices that can complete the work of fault location, isolation and restoration of power supply, making the feeder automation system more reliable; at the same time, the embodiments of the present invention disclose The feeder automation system has no special performance requirements for the existing feeder monitoring and control terminals, and does not need to be modified. The system configuration is simple and easy.

It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. 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 invention. Therefore, the present invention 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 (7)

1. a feed line automatization system is characterized in that, comprising:

The feeder line detection and control terminal of a plurality of detection failure information;

The a plurality of fault treating apparatus that link to each other with said feeder line detection and control terminal respectively through communication network; Said a plurality of fault treating apparatus is collected position of the switch information and the fault message that said feeder line detection and control terminal sends respectively; According to said position of the switch information and fault message fault location point; And the feeder line detection and control terminal at the switch place of confirming to link to each other with said fault point is pending feeder line detection and control terminal, and said a plurality of fault treating apparatus are respectively to said pending feeder line detection and control terminal transmission isolation order;

When said pending feeder line detection and control terminal receives the isolation order of any transmission in said a plurality of fault treating apparatus, carry out said isolation order, and after isolating successfully, to said a plurality of fault treating apparatus feedback isolation successful information;

After said a plurality of fault treating apparatus receives said isolation successful information, recover the power supply of non-fault zone according to preset recovery scheme.

2. system according to claim 1 is characterized in that, said fault treating apparatus comprises:

Collect position of the switch information and fault message that said feeder line detection and control terminal reports; And after processor is judged position of failure point and is confirmed pending feeder line detection and control terminal; Send isolation order and give said pending feeder line detection and control terminal, and receive the information interface of the isolation successful information of said pending feeder line detection and control terminal feedback;

According to said position of the switch information and fault message fault location point and definite pending feeder line detection and control terminal; After the isolation successful information that receives said pending feeder line detection and control terminal feedback, start the processor that preset recovery scheme recovers the power supply of non-fault zone.

3. method according to claim 2 is characterized in that, said processor comprises:

Said position of the switch information and fault message are carried out analyzing and processing, judge the position at place, fault point, and the feeder line detection and control terminal at the switch that will link to each other with said fault point place is confirmed as the fault location processor of pending feeder line detection and control terminal;

The order that produces isolation order produces processor;

After receiving the isolation successful information of said pending feeder line detection and control terminal feedback, start the processor that restores electricity that preset recovery scheme recovers the power supply of non-fault zone.

4. method according to claim 3 is characterized in that, said order produces processor and comprises:

Judge that the said isolating switch that needs is the judge module of on-load switch or circuit breaker;

At the said switch that links to each other with the fault point is under the situation of on-load switch: produce the disconnection master switch order that sends to transformer station; And after receiving the disconnection master switch successful information that transformer station returns; Generation sends to the isolation order of pending feeder line detection and control terminal, and is under the situation of circuit breaker at the said switch that links to each other with the fault point: directly produce the order generation module that sends to pending feeder line detection and control terminal.

5. system according to claim 1 is characterized in that, said a plurality of fault treating apparatus are arranged in the transformer station or the node location of distribution line.

6. system according to claim 1 is characterized in that, said communication network is a fiber optic Ethernet.

7. system according to claim 1 is characterized in that, said feeder line detection and control terminal comprises:

The tracer that is used for detection failure information;

Message length according to preset sends position of the switch information and fault message, and receives the message interface of the order of fault treating apparatus transmission;

Carry out the command execution processor of the order of said fault treating apparatus transmission.

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