CN111864901A - Distributed FA and main station FA cooperative control method capable of adapting to communication time delay - Google Patents
Distributed FA and main station FA cooperative control method capable of adapting to communication time delay Download PDFInfo
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- CN111864901A CN111864901A CN202010612142.9A CN202010612142A CN111864901A CN 111864901 A CN111864901 A CN 111864901A CN 202010612142 A CN202010612142 A CN 202010612142A CN 111864901 A CN111864901 A CN 111864901A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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Abstract
The invention discloses a cooperative control method of a distributed FA and a main station FA with self-adaptive communication time delay, which comprises the following steps: establishing an intelligent distributed FA and main station FA interaction model considering communication delay; the distributed FA and the main station FA which take communication time delay into account are cooperatively controlled; when the communication time delay is unstable, the distributed FA and the main station FA cooperate to control the strategy to be self-adaptively adjusted; the distributed FA and the main station FA cooperatively control strategy to realize self-adaptive communication time delay, line fault processing is more reliable, the fault isolation range is more accurate, and power supply reliability is improved.
Description
Technical Field
The invention belongs to the technical field of power distribution automation, and particularly relates to a distributed FA and main station FA cooperative control method capable of adapting to communication time delay.
Background
The implementation of distribution automation is a demand for the development of power systems, and Feeder Automation (FA) technology is a core technology of distribution network automation. Feeder automation is mainly realized by adopting two modes of local distributed FA and centralized FA. The power distribution main loop mainly adopts a centralized FA control mode, realizes control by means of communication information through the coordination of a main station system; the branch line and radiation power supply mostly adopt a local distributed FA control mode, and the local range realizes rapid control. In recent years, with the improvement of the degree of automation, a control mode of coordination and coordination of centralized and local distributed master stations is also added, but the requirements of distributed FA and cooperative control of the distributed FA and the master stations on communication speed and reliability are high, optical fiber communication is generally required, the construction cost is high, the difficulty is high, the period is long, and the application and popularization of the distributed FA are not facilitated.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to implement flexible configuration of a system and solve the problem of incorrect adjacency relation of terminals caused by misoperation of configuration personnel in the configuration process, a cooperative control method of a distributed FA and a master FA with adaptive communication delay is provided.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a cooperative control method of distributed FA and main station FA with self-adaptive communication time delay comprises the following steps:
establishing an intelligent distributed FA and main station FA interaction model considering communication delay;
the distributed FA considering the communication time delay and the main station FA cooperatively control;
and when the communication time delay is unstable, the distributed FA and the main station FA cooperatively control strategy is adaptively adjusted.
Further, the establishing of the intelligent distributed FA and master FA interaction model considering communication delay specifically includes:
adding a communication delay description model at a logic node of data interaction between the distributed FA and the master station centralized FA, wherein the communication delay description model is used for describing timeliness of logic node data;
various different fault type models interacted between the intelligent distributed FA and the main station FA increase communication time delay models to express timeliness of various different fault types.
Furthermore, the communication time delay model is modeled based on the IEC 61850 standard.
Further, the distributed FA and the master FA cooperatively control, which needs to consider communication delay between the distributed FA terminals and the master, and perform fault analysis and fault processing, specifically:
when the fault analysis is simple fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the interaction data is effective, the distributed FA carries out fault location and isolation, and the main station FA is responsible for non-fault area switching operation;
when the fault analysis is a complex fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the interaction data is effective, the distributed FA carries out fault positioning and isolation, and the main station FA provides monitoring and standby error correction means.
Further, when the fault analysis is a simple fault, the data interaction is performed by considering the cooperative rule of the communication delay, specifically:
when a line has a fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the distributed FA terminals finish fault isolation and generate accident processing information, and then a consistency signal model including the communication delay information is sent to a power distribution main station;
The centralized FA of the main station receives accident processing information and communication time delay information sent by the distributed FA through the existing communication protocol besides traditional overcurrent signals and switch opening signals;
and the main station judges the correctness of the distributed FA processing according to the description of the accident processing information and the time delay information, and the centralized FA of the main station timely performs backup error correction processing.
Further, when the failure analysis is a complex failure, the data interaction is performed by considering the cooperative rule of the communication delay, specifically:
when a line has a fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the distributed FA terminals finish fault isolation and generate accident processing information, and then a consistency signal model including the communication delay information is sent to a power distribution main station;
the centralized FA of the main station receives accident processing information and communication time delay information sent by the distributed FA through the existing communication protocol besides traditional overcurrent signals and switch opening signals;
and the main station judges the correctness of the distributed FA processing according to the description of the accident processing information and the time delay information, analyzes the load of the non-fault area for transferring to an optimal recovery path aiming at the received accident processing information, and completes the fault recovery processing.
Further, when the communication delay is unstable, the distributed FA and the master FA cooperative control strategy is adaptively adjusted, specifically:
when communication among the distributed FA terminals is interrupted, the terminals lock the distributed FA functions, when a line fails, information acquired by the terminals is uploaded to a main station, and the centralized FA of the main station performs failure analysis and processing;
when the communication time delay between the distributed FA terminals exceeds 20ms but is not interrupted, a line is in fault and overcurrent information is monitored, the control switch carries out rapid fault isolation, comprehensive judgment is carried out after the information of adjacent terminals is received in time delay, error correction is carried out according to the judgment result, the processing information is uploaded to the main station, and the main station FA carries out monitoring processing;
when the communication between the distributed FA terminal and the main station is interrupted, the fault analysis and processing of the distributed FA are not influenced when a line fails, after the communication is recovered, the processing information is uploaded to the main station, and the main station FA carries out monitoring processing.
The invention achieves the following beneficial effects:
the invention has reasonable design, and the distributed FA has the characteristics of rapid action, accurate positioning and high requirements on communication speed and reliability. Therefore, by establishing a cooperative control strategy of the distributed FA and the main station centralized FA considering communication delay, when a fault occurs, the distributed FA considers the communication delay, completes fault analysis and isolation, uploads accident processing information and communication delay, and the distribution network main station centralized FA monitors the distributed FA processing information; when the fault is judged to be a simple fault, the distributed FA considers communication delay to carry out fault positioning and isolation and power restoration in a non-fault area, and the master station centralized FA serves as a backup; when the fault is judged to be a complex fault, the distributed FA considers communication delay to carry out fault positioning and isolation, and the non-fault area recovery is completed by the centralized FA of the power supply main station. The method disclosed by the invention is adaptive to communication time delay, more reliable in line fault processing, more accurate in fault isolation range and capable of improving power supply reliability.
Drawings
Fig. 1 is a schematic diagram of information interaction between a distributed FA and a master station centralized FA in consideration of communication delay.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Examples
A cooperative control method of distributed FA and main station FA with self-adaptive communication time delay comprises the following steps:
step one, establishing an intelligent distributed FA and main station FA interaction model considering communication time delay;
the first step comprises the following steps:
1.1, adding a communication delay description model at a logic node where distributed FA and main station centralized FA interact data, wherein the communication delay description model is used for describing timeliness of logic node data;
1.2 various fault type models interacted between the intelligent distributed FA and the main station FA increase communication time delay models to express timeliness of various fault types.
The communication time delay models added in the logic node model and the fault type model are modeled based on the IEC61850 standard.
An object-oriented modeling technology is adopted, a model of adding mutual communication delay in a unified modeling abstract communication Service interface ACSI (abstract communication Service interface) is defined, and communication delay data are transmitted in the data interaction process.
Step two, taking the communication delay into account, and cooperatively controlling the distributed FA and the main station FA;
the second step comprises the following steps:
the distributed FA and the main station FA cooperatively control, and the fault analysis and the fault processing are carried out by considering the communication delay between the distributed FA terminals and the main station, wherein the fault analysis and the fault processing comprise the following steps:
2.1 when the fault analysis is a simple fault, information is exchanged between the distributed FA terminals, when the communication delay is less than 20ms, the exchange data is effective, the distributed FA performs fault location and isolation, and the main FA is responsible for non-fault area switching operation.
2.2 when the failure analysis is complex failure, the information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the interaction data is effective, the distributed FA carries out failure positioning and isolation, and the main station FA provides monitoring and standby error correction means.
The data interaction of the simple fault according to the cooperation rule considering the communication delay described in 2.1 specifically includes:
3.1 when a line has a fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the distributed FA terminals finish fault isolation and generate accident processing information, and then the consistency signal model including the communication delay information is uploaded to a power distribution main station;
3.2 the centralized FA of the main station receives accident processing information and communication time delay information sent by the distributed FA through the existing communication protocol besides the traditional overcurrent signal and switch opening signal;
3.3 the main station judges the correctness of the distributed FA processing according to the description of the accident processing information and the time delay information, and the centralized FA of the main station carries out backup error correction processing in time.
For a complex fault, the data interaction according to the cooperation rule considering the communication delay described in 2.2 specifically includes:
3.4 when the line has a fault, the distributed FA terminals exchange information, when the communication delay is less than 20ms, the distributed FA terminals finish fault isolation and generate accident processing information, and then the consistency signal model including the communication delay information is uploaded to a power distribution main station;
3.5 the centralized FA of the main station receives accident processing information and communication time delay information sent by the distributed FA through the existing communication protocol besides the traditional overcurrent signal and switch opening signal;
3.6 the main station judges the correctness of the distributed FA processing according to the description of the accident processing information and the time delay information, analyzes the load of the non-fault area for transferring to an optimal recovery path aiming at the received accident processing information, and completes the fault recovery processing.
And step three, when the communication time delay is unstable, the distributed FA and the main station FA cooperate to control the strategy to be self-adaptively adjusted.
The third step comprises the following steps:
when the communication delay is unstable, the distributed FA and the main station FA cooperative control strategy is adaptively adjusted, and the method specifically comprises the following steps:
4.1 when the communication between the distributed FA terminals is interrupted, the terminals lock the distributed FA function, when the line fails, the distributed FA terminals do not process the line failure, the information acquired by the distributed FA terminals is uploaded to the main station, and the signals uploaded by the centralized FA integrated terminal of the main station are analyzed and processed;
4.2 when the communication time delay between the distributed FA terminals exceeds 20ms but is not interrupted, the line is in fault, when the distributed FA terminals monitor the over-current information, the control switch carries out rapid fault isolation, carries out comprehensive judgment after receiving the information of the adjacent terminals in a time delay way, carries out error correction according to the judgment result, if the fault is in the jurisdiction range of the distributed FA terminals, the action is correct, the processing information is uploaded to the main station, and the main station FA carries out monitoring processing; if the fault occurs outside the jurisdiction range of the fault, error correction processing is carried out, and the power supply of the section of area is recovered.
4.3 when the communication between the distributed FA terminal and the main station is interrupted, but the communication is less than 20ms, the fault analysis and processing of the distributed FA are not affected when the line fails, the processing information is uploaded to the main station after the communication is recovered, and the main station FA carries out monitoring processing.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (7)
1. A cooperative control method of a distributed FA and a main station FA with self-adaptive communication time delay is characterized by comprising the following steps:
establishing an intelligent distributed FA and main station FA interaction model considering communication delay;
the distributed FA considering the communication time delay and the main station FA cooperatively control;
and when the communication time delay is unstable, the distributed FA and the main station FA cooperatively control strategy is adaptively adjusted.
2. The cooperative control method for a distributed FA and a main station FA with adaptive communication delay according to claim 1, wherein the establishing of the intelligent distributed FA and main station FA interaction model considering communication delay specifically comprises:
adding a communication delay description model at a logic node of data interaction between the distributed FA and the master station centralized FA, wherein the communication delay description model is used for describing timeliness of logic node data;
various different fault type models interacted between the intelligent distributed FA and the main station FA increase communication time delay models to express timeliness of various different fault types.
3. The cooperative control method for the distributed FA and the main station FA with the adaptive communication delay as claimed in claim 2, wherein the communication delay models are modeled based on IEC 61850 standard.
4. The cooperative control method for the distributed FA and the master FA with the adaptive communication delay as recited in claim 1, wherein the distributed FA and the master FA perform cooperative control, and the fault analysis and the fault processing are performed by considering the communication delay between the distributed FA terminals and the master, specifically:
when the fault analysis is simple fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the interaction data is effective, the distributed FA carries out fault location and isolation, and the main station FA is responsible for non-fault area switching operation;
When the fault analysis is a complex fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the interaction data is effective, the distributed FA carries out fault positioning and isolation, and the main station FA provides monitoring and standby error correction means.
5. The cooperative control method for the distributed FA and the main station FA with the adaptive communication delay as claimed in claim 4, wherein when the failure analysis is a simple failure, the cooperative rule of the communication delay is considered for data interaction, specifically:
when a line has a fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the distributed FA terminals finish fault isolation and generate accident processing information, and then a consistency signal model including the communication delay information is sent to a power distribution main station;
the centralized FA of the main station receives accident processing information and communication time delay information sent by the distributed FA through the existing communication protocol besides traditional overcurrent signals and switch opening signals;
and the main station judges the correctness of the distributed FA processing according to the description of the accident processing information and the time delay information, and the centralized FA of the main station timely performs backup error correction processing.
6. The cooperative control method for a distributed FA and a master FA with adaptive communication delay as claimed in claim 4, wherein when the failure analysis is a complex failure, the cooperative rule of communication delay is considered for data interaction, specifically:
When a line has a fault, information is interacted between the distributed FA terminals, when the communication delay is less than 20ms, the distributed FA terminals finish fault isolation and generate accident processing information, and then a consistency signal model including the communication delay information is sent to a power distribution main station;
the centralized FA of the main station receives accident processing information and communication time delay information sent by the distributed FA through the existing communication protocol besides traditional overcurrent signals and switch opening signals;
and the main station judges the correctness of the distributed FA processing according to the description of the accident processing information and the time delay information, analyzes the load of the non-fault area for transferring to an optimal recovery path aiming at the received accident processing information, and completes the fault recovery processing.
7. The cooperative control method for a distributed FA and a master FA with adaptive communication delay as claimed in claim 6, wherein when the communication delay is unstable, the cooperative control strategy for the distributed FA and the master FA is adaptively adjusted, specifically:
when communication among the distributed FA terminals is interrupted, the terminals lock the distributed FA functions, when a line fails, information acquired by the terminals is uploaded to a main station, and the centralized FA of the main station performs failure analysis and processing;
When the communication time delay between the distributed FA terminals exceeds 20ms but is not interrupted, a line is in fault and overcurrent information is monitored, the control switch carries out rapid fault isolation, comprehensive judgment is carried out after the information of adjacent terminals is received in time delay, error correction is carried out according to the judgment result, the processing information is uploaded to the main station, and the main station FA carries out monitoring processing;
when the communication between the distributed FA terminal and the main station is interrupted, the fault analysis and processing of the distributed FA are not influenced when a line fails, after the communication is recovered, the processing information is uploaded to the main station, and the main station FA carries out monitoring processing.
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Cited By (1)
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Application publication date: 20201030 |