CN114301172A - Process layer equipment and data processing method thereof - Google Patents
Process layer equipment and data processing method thereof Download PDFInfo
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- CN114301172A CN114301172A CN202111560327.0A CN202111560327A CN114301172A CN 114301172 A CN114301172 A CN 114301172A CN 202111560327 A CN202111560327 A CN 202111560327A CN 114301172 A CN114301172 A CN 114301172A
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Abstract
The invention discloses a process layer device and a data processing method thereof in the technical field of intelligent substations, wherein the process layer device comprises: the switching value input plug-in is used for acquiring the position information of the switch knife; the alternating current input plug-in is used for carrying out low value conversion based on the high value analog quantity after the high value analog quantity is obtained, so as to obtain the low value analog quantity; the interval acquisition plug-in is used for sending the low-value analog quantity and the switch disconnecting link position information to the interval protection equipment; the bus acquisition plug-in is used for sending the low-value analog quantity and the switch disconnecting link position information to the bus protection equipment; the interval acquisition plug-in is also used for receiving an interval protection action command issued by interval protection equipment; the bus acquisition plug-in is also used for receiving a bus protection action command issued by the bus protection equipment. According to the invention, by decoupling the signal acquisition function related to the interval protection and bus protection functions on the process layer equipment, the abnormal range of the interlayer equipment caused by the function error of the acquisition plug-in can be effectively controlled.
Description
Technical Field
The invention relates to process layer equipment and a data processing method thereof, and belongs to the technical field of intelligent substations.
Background
At present, the intelligent transformer substation is increasingly applied due to the advantages of low construction cost, convenient operation and maintenance and the like. The process layer equipment such as the merging unit, the intelligent terminal and the like converts analog quantity signals such as voltage and current, switch knife switch positions and the like into digital quantity signals and releases the digital quantity signals to a network, and the intelligent substation has the great characteristic of realizing data sharing.
Data sharing causes the current situation that bay level equipment with different functions such as bay protection, bus protection, measurement and control devices and the like depends on the same merging unit and intelligent terminal. In the development process of the intelligent substation, the problem that the function of equipment in different spacer layers is abnormal due to the faults of process layer equipment such as an over-merging unit and the like occurs. Therefore, the technical development route of the process layer equipment mainly aims to improve the reliability of the equipment, and the functional requirements are relatively stable.
In order to solve the problem of coupling of the functions of the bay level equipment of the intelligent substation in the process level, the industry has a technical route for achieving the function of decoupling the bay level equipment by changing the form of the process level equipment. For example, chinese patent publication No. CN106451773A, published as 2017, 22.02/2017, entitled "implementation method of process layer device of intelligent substation automation system with function decoupling", describes an implementation method for decoupling a relay protection function and a monitoring function by splitting an existing process layer device.
The function abnormity of the spacer layer equipment is divided into function loss and function error, and the problem that the relay protection function and the monitoring function are simultaneously lost due to the fault of the single process layer equipment is mainly solved by the patent. In the existing substation system architecture, a solution to prevent the loss of important functions is to configure two sets of function bearing equipment, such as two sets of relay protection equipment for important load configuration. Therefore, compared with the function loss, the problem that the function errors of equipment at different intervals caused by the abnormal process level equipment is more urgent to solve at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides process layer equipment and a data processing method thereof.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the present invention provides a process layer device comprising:
the switching value input plug-in is used for acquiring the position information of the switch knife;
the alternating current input plug-in is used for carrying out low value conversion based on the high value analog quantity after the high value analog quantity is obtained, so as to obtain the low value analog quantity;
the interval acquisition plug-in is used for sending the low-value analog quantity and the switch disconnecting link position information to the interval protection equipment;
the bus acquisition plug-in is used for sending the low-value analog quantity and the switch disconnecting link position information to the bus protection equipment;
the interval acquisition plug-in is also used for receiving an interval protection action command issued by interval protection equipment;
the bus acquisition plug-in is also used for receiving a bus protection action command issued by the bus protection equipment;
and the switching value output plug-in is used for driving the corresponding outlet relay to act based on the interval protection action command and the bus protection action command.
Further, after the interval acquisition plug-in converts the three-phase voltage and the three-phase current in the low-value analog quantity into interval protection digital quantity, the interval protection digital quantity is sent to the interval protection equipment through an Ethernet medium in an IEC61850-9-2 data format; the bus collection plug-in converts the three-phase current in the low-value analog quantity into a bus protection digital quantity, and then sends the bus protection digital quantity to the bus protection equipment through an Ethernet medium in an IEC61850-9-2 data format.
Furthermore, the interval acquisition plug-in and the bus acquisition plug-in both receive the position information of the switch knife switch through an internal CAN bus and respectively send the position information to the interval protection equipment and the bus protection equipment in a standard GOOSE data format.
Further, the interval acquisition plug-in and the bus acquisition plug-in respectively receive an interval protection GOOSE control command and a bus protection GOOSE control command issued by the interval protection device and the bus protection device.
In a second aspect, the present invention provides a process layer device data processing method, including:
acquiring high-value analog quantity and switch position information;
performing low-value conversion based on the high-value analog quantity to obtain a low-value analog quantity;
sending the low-value analog quantity and the switch disconnecting link position information to the interval protection equipment and the bus protection equipment;
respectively receiving an interval protection action command and a bus protection action command issued by interval protection equipment and bus protection equipment;
and driving the corresponding outlet relay to act based on the interval protection action command and the bus protection action command.
Further, send low value analog quantity and switch position information to interval protection equipment and generating line protection equipment, include: after three-phase voltage and three-phase current in the low-value analog quantity are converted into interval protection digital quantity, the interval protection digital quantity is sent to interval protection equipment through an Ethernet medium in an IEC61850-9-2 data format; and after the three-phase current in the low-value analog quantity is converted into bus protection digital quantity, the bus protection digital quantity is sent to bus protection equipment through an Ethernet medium in an IEC61850-9-2 data format.
Further, send low value analog quantity and switch position information to interval protection equipment and generating line protection equipment, still include: after receiving the position information of the switch knife switch through the internal CAN bus, the position information is respectively sent to the interval protection equipment and the bus protection equipment in a standard GOOSE data format.
Further, the receiving of the interval protection action command and the bus protection action command issued by the interval protection device and the bus protection device respectively includes: and respectively receiving an interval protection GOOSE control command and a bus protection GOOSE control command sent by the interval protection equipment and the bus protection equipment.
In a third aspect, the present invention provides a process layer device data processing apparatus, including a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any of the above.
In a fourth aspect, the invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any of the methods described above.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the special acquisition plug-in for bus protection is added on the original process layer equipment, multi-plug-in acquisition is realized on the process layer equipment, the original acquisition plug-in transmits data to equipment such as interval protection for use, and the signal acquisition function related to the interval protection and the bus protection function is decoupled on the process layer equipment, so that the simultaneous false actions of interval protection and bus protection caused by the failure of a single acquisition board card are avoided, and the abnormal range of the spacer layer equipment caused by the function error of the acquisition plug-in can be effectively controlled.
Drawings
Fig. 1 is a schematic structural diagram of a process layer device according to an embodiment of the present invention.
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.
The first embodiment is as follows:
as shown in fig. 1, a process layer device includes an ac input plug 1, a switching value input plug 2, a switching value output plug 3, an interval collection plug 4, and a bus collection plug 5, and an auxiliary plug for providing power and a connection loop to the plug is required to be configured in addition to the plug, and since the plug is not related to the collection loop, the embodiment is not discussed in detail, where:
alternating current input plug-in components 1 are connected with interval collection plug-in components 4 and bus collection plug-in components 5 through the mode that the backplate directly links to each other for high value analog quantity converts the low value analog quantity that is fit for gathering plug-in components sampling and use, realizes effectively keeping apart of electric power system and secondary equipment simultaneously, and alternating current input plug-in components 1 contains voltage transformer and current transformer.
The switching value input plug-in 2 is used for acquiring a primary equipment state signal including a switching knife switch position, namely switching knife switch position information, and then sending the primary equipment state signal to the acquisition plug-in through an internal CAN bus, wherein the acquisition plug-in comprises an interval acquisition plug-in 4 and a bus acquisition plug-in 5;
the switching value output plug-in 3 mainly provides a passive idle contact to be switched out, receives an action command sent by the acquisition board card through an internal CAN bus, and then drives a corresponding outlet relay to act;
as described above, the alternating current input plug-in 1, the switching value input plug-in 2 and the switching value output plug-in 3 have relatively simple functions and are not easy to make mistakes, so that the plug-in is used as a public link for collecting and executing the plug-in, and provides a data source for collecting the plug-in.
The interval acquisition plug-in 4 is used for converting low-value analog quantity input by the alternating current input plug-in 1 into interval protection digital quantity, including three-phase voltage and three-phase current, the low-value analog quantity is transmitted to interval protection equipment in an IEC61850-9-2 data format through an Ethernet medium after conversion processing, meanwhile, the switch disconnecting link position information of the switching value input plug-in 2 is received through an internal CAN bus, the switch disconnecting link position information is transmitted to the interval protection equipment in a standard GOOSE data format, an interval protection GOOSE control command sent by the interval protection equipment is received, the switching value output plug-in 3 is controlled through the internal CAN bus to carry out outlet control, and the tripping and closing control of a switch is mainly carried out.
The bus collecting plug-in 5 is similar to the interval collecting plug-in 4 and is used for converting low-value analog quantity input by the alternating current input plug-in 1 into bus protection digital quantity, mainly comprises three-phase current, is transmitted to bus protection equipment in an IEC61850-9-2 data format through an Ethernet medium after conversion processing, receives switch disconnecting link position information of the switching value input plug-in 2 through an internal CAN bus, is transmitted to the bus protection equipment in a standard GOOSE data format, receives a bus protection GOOSE control command sent by the bus protection equipment, controls the switching value output plug-in 3 to carry out outlet control and mainly controls tripping of a switch.
By adopting the scheme, the invention can realize multi-plug-in acquisition in process layer equipment, decouple the acquisition functions of important interlayer equipment such as interval protection, bus protection and the like, avoid simultaneous false actions of interval protection and bus protection caused by the fault of a single acquisition board card, and effectively control the fault influence range.
Example two:
based on the first embodiment, the embodiment provides a process layer equipment data processing method, which includes decoupling a signal acquisition and control function plug-in related to an interval protection and bus protection function at a process layer; the functions of alternating current electrical quantity acquisition, control output and the like required by the interval protection function are realized by an interval acquisition plug-in 4, the interval acquisition plug-in 4 transmits the acquired alternating current electrical quantity to interval protection equipment through a standard IEC61850-9-2 data format, receives a GOOSE control command issued by the interval protection equipment at the same time, controls the switching quantity output plug-in 3 through an internal CAN bus to perform outlet control, and performs tripping and closing control of a switch; the functions of alternating current electrical quantity acquisition, control output and the like required by the bus protection function are realized by a bus acquisition plug-in 5, the bus acquisition plug-in 5 sends the acquired alternating current electrical quantity to bus protection equipment through a standard IEC61850-9-2 data format, and simultaneously receives a GOOSE control command issued by the bus protection equipment, controls a switching value output plug-in 3 to carry out outlet control and mainly controls the switch to trip; the interval acquisition plug-in 4 and the bus acquisition plug-in 5 are integrated in the same process layer equipment, and plug-ins with low failure rate, such as the alternating current input plug-in 1, the switching value input plug-in 2, the switching value output plug-in 3 and the like, are shared.
According to the method for realizing multi-plug-in acquisition of the process layer equipment, the acquisition plug-in special for bus protection is added on the original process layer equipment, the original acquisition plug-in sends data to equipment such as interval protection for use, the signal acquisition function related to the interval protection and the bus protection function is decoupled on the process layer equipment, and the abnormal range of the spacer layer equipment caused by the function error of the acquisition plug-in can be effectively controlled.
Example three:
the embodiment of the invention also provides a data processing device of the process layer equipment, which can realize the data processing method of the process layer equipment in the second embodiment, and the data processing device comprises a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method of:
acquiring high-value analog quantity and switch position information;
performing low-value conversion based on the high-value analog quantity to obtain a low-value analog quantity;
sending the low-value analog quantity and the switch disconnecting link position information to the interval protection equipment and the bus protection equipment;
respectively receiving an interval protection action command and a bus protection action command issued by interval protection equipment and bus protection equipment;
and driving the corresponding outlet relay to act based on the interval protection action command and the bus protection action command.
Example four:
an embodiment of the present invention further provides a computer-readable storage medium, which can implement the data processing method of the process layer device in the second embodiment, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the following steps of the method:
acquiring high-value analog quantity and switch position information;
performing low-value conversion based on the high-value analog quantity to obtain a low-value analog quantity;
sending the low-value analog quantity and the switch disconnecting link position information to the interval protection equipment and the bus protection equipment;
respectively receiving an interval protection action command and a bus protection action command issued by interval protection equipment and bus protection equipment;
and driving the corresponding outlet relay to act based on the interval protection action command and the bus protection action command.
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.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A process layer device, comprising:
the switching value input plug-in is used for acquiring the position information of the switch knife;
the alternating current input plug-in is used for carrying out low value conversion based on the high value analog quantity after the high value analog quantity is obtained, so as to obtain the low value analog quantity;
the interval acquisition plug-in is used for sending the low-value analog quantity and the switch disconnecting link position information to the interval protection equipment;
the bus acquisition plug-in is used for sending the low-value analog quantity and the switch disconnecting link position information to the bus protection equipment;
the interval acquisition plug-in is also used for receiving an interval protection action command issued by interval protection equipment;
the bus acquisition plug-in is also used for receiving a bus protection action command issued by the bus protection equipment;
and the switching value output plug-in is used for driving the corresponding outlet relay to act based on the interval protection action command and the bus protection action command.
2. The process layer device of claim 1, wherein the gap collection plugin converts three-phase voltages and three-phase currents in the low-value analog quantity into gap protection digital quantities and sends the gap protection digital quantities to the gap protection device in an IEC61850-9-2 data format through an ethernet medium; the bus collection plug-in converts the three-phase current in the low-value analog quantity into a bus protection digital quantity, and then sends the bus protection digital quantity to the bus protection equipment through an Ethernet medium in an IEC61850-9-2 data format.
3. The process layer device of claim 1, wherein the bay collection plug-in and the bus collection plug-in both receive switch disconnector position information via an internal CAN bus and transmit the switch disconnector position information to the bay protection device and the bus protection device, respectively, in a standard GOOSE data format.
4. The process layer device of claim 1, wherein the bay collection plug-in and the bus collection plug-in receive a bay protection GOOSE control command and a bus protection GOOSE control command issued by the bay protection device and the bus protection device, respectively.
5. A process layer device data processing method is characterized by comprising the following steps:
acquiring high-value analog quantity and switch position information;
performing low-value conversion based on the high-value analog quantity to obtain a low-value analog quantity;
sending the low-value analog quantity and the switch disconnecting link position information to the interval protection equipment and the bus protection equipment;
respectively receiving an interval protection action command and a bus protection action command issued by interval protection equipment and bus protection equipment;
and driving the corresponding outlet relay to act based on the interval protection action command and the bus protection action command.
6. The process level device data processing method of claim 5, wherein sending low value analog quantities and switch knife position information to the bay protection device and the bus bar protection device comprises: after three-phase voltage and three-phase current in the low-value analog quantity are converted into interval protection digital quantity, the interval protection digital quantity is sent to interval protection equipment through an Ethernet medium in an IEC61850-9-2 data format; and after the three-phase current in the low-value analog quantity is converted into bus protection digital quantity, the bus protection digital quantity is sent to bus protection equipment through an Ethernet medium in an IEC61850-9-2 data format.
7. The process layer device multi-plug acquisition method of claim 5, wherein sending low value analog quantities and switch knife position information to the separation protection device and the bus protection device, further comprises: after receiving the position information of the switch knife switch through the internal CAN bus, the position information is respectively sent to the interval protection equipment and the bus protection equipment in a standard GOOSE data format.
8. The process layer device multi-plug acquisition method of claim 5, wherein receiving a bay protection action command and a bus protection action command issued by a bay protection device and a bus protection device, respectively, comprises: and respectively receiving an interval protection GOOSE control command and a bus protection GOOSE control command sent by the interval protection equipment and the bus protection equipment.
9. A process layer device data processing device is characterized by comprising a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any one of claims 5 to 8.
10. Computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111560327.0A CN114301172A (en) | 2021-12-20 | 2021-12-20 | Process layer equipment and data processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111560327.0A CN114301172A (en) | 2021-12-20 | 2021-12-20 | Process layer equipment and data processing method thereof |
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| Publication Number | Publication Date |
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| CN114301172A true CN114301172A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111560327.0A Pending CN114301172A (en) | 2021-12-20 | 2021-12-20 | Process layer equipment and data processing method thereof |
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| CN (1) | CN114301172A (en) |
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- 2021-12-20 CN CN202111560327.0A patent/CN114301172A/en active Pending
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